WO2005071092A1 - サイトメガロウイルスエンハンサーおよびニワトリβ-アクチンプロモーターを含むハイブリッドプロモーターを利用したマイナス鎖RNAウイルスベクターの製造方法 - Google Patents
サイトメガロウイルスエンハンサーおよびニワトリβ-アクチンプロモーターを含むハイブリッドプロモーターを利用したマイナス鎖RNAウイルスベクターの製造方法 Download PDFInfo
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Classifications
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
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- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
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- C12N2770/00011—Details
- C12N2770/36011—Togaviridae
- C12N2770/36111—Alphavirus, e.g. Sindbis virus, VEE, EEE, WEE, Semliki
- C12N2770/36141—Use of virus, viral particle or viral elements as a vector
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- C12N2830/00—Vector systems having a special element relevant for transcription
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- C12N2830/00—Vector systems having a special element relevant for transcription
- C12N2830/80—Vector systems having a special element relevant for transcription from vertebrates
- C12N2830/90—Vector systems having a special element relevant for transcription from vertebrates avian
Definitions
- the present invention relates to a method for producing a minus-strand RNA viral vector.
- minus-strand RNA viruses have been mainly recovered by recombinant vaccinia virus expressing v7 RNA polymerase (vTF7-3: Fuerst, TR et al., Proc. Natl. Acad. Sci. USA 83, 8122- 8126 (1986), MVA-T7: Sutter, G. et al., FEBS lett. 371: 9-12 (1995), NP, P, L genes and minus-strand RNA virus genome under T7 promoter control (Kolakofsky, et al., EMBO J. 14: 6087-6094 (1995); Kato, A. et al "Genes Cells 1: 569-579 (1996)).
- NP, P, L and antigenomic RNA are supplied by the action of T7 RNA polymerase expressed in the virus, and the cap structure is formed at the 5 'end of NP, P, L mRNA by the action of the vaccinia virus caving enzyme.
- the proteins are translated, and these proteins act on antigenomic RNA to form a functional RNP. Genome RNP from the non-RNP is replicated, further occur transcription of the virus-derived protein, the virus infection cycle begins Ru recovered.
- Non-Patent Document 1 Fuerst, TR et al., Proc. Natl. Acad. Sci. USA 83, 8122-8126 (1986)
- Non-Patent Document 2 Sutter G, et al, FEBS lett. 371: 9-12 (1995) )
- Non-Patent Document 3 Kolakofsky et al., EMBO J. 14: 6087-6094 (1995)
- Non-Patent Document 4 Kato, A. et al., Genes Cells 1: 569-579 (1996)
- the present invention provides a method for producing a negative-strand RNA virus vector without using a vaccinia virus, using a hybrid promoter containing a cytomegaloinole hanshan and a chicken 13-actin promoter.
- the second method is a recovery method reported by Rabies virus, in which NP, P, L, and genome are all driven by a cytomegalovirus promoter (K. Inoue, et al., J Virological Method. 107: 229-236 (2003)).
- a hammerhead ribozyme is added to the 5 'end of the antigenome in order to accurately cut the end of the genome, allowing virus recovery without using a T7 RNA polymerase expression strain. is there.
- the present inventors have improved the method for driving transcription of the virus genome in a virus-producing cell.
- transcription of the minus-strand RNA virus genomic RNA and all expression of the minus-strand RNA virus protein that forms ribonucleoprotein with the genomic RNA can be performed using the cytomegaloinole hanshan and the chicken / 3-actin promoter. It has been found that efficient virus production can be realized by direct or indirect drive by a hybrid promoter (referred to as CA promoter).
- genomic RNA transcription is performed by linking DNA encoding a minus-strand RNA virus genomic RNA under the control of a CA promoter, and directly inducing transcription of the genomic RNA by the CA promoter, or encoding genomic RNA.
- a signal sequence of RNA polymerase derived from butteriophage is linked upstream of the DNA, and the RNA polymerase is expressed from the CA promoter, thereby inducing transcription of genomic RNA.
- the present inventors have used F protein, M protein, which are one of the envelope constituent proteins, and non-propagating negative-strand RNA lacking F and M protein genes.
- the virus was successfully recovered for the first time without using vaccinia virus. Since the method of the present invention can prepare a high-titer minus-strand RNA virus without using any vaccinia virus, it is useful for the production of highly safe viruses such as gene therapy.
- the present invention relates to transcription of genomic RNA of a minus-strand RNA virus and the genome.
- the present invention relates to a method for producing a minus-strand RNA virus, characterized in that expression of a minus-strand RNA virus protein that forms RNA and ribonucleoprotein is induced by a CA promoter. Relates to the invention.
- the present invention claims One or more (or all) of the inventions described in each of the paragraphs as desired combinational inventions, in particular, the same independent claims (sections relating to inventions not included in the inventions described in other paragraphs)
- a method for producing a minus-strand RNA virus vector in a virus-producing cell (0 transcription of the minus-strand RNA virus genomic RNA or its complementary strand and (ii) formation of a ribonucleoprotein with the genomic RNA.
- a method comprising inducing expression of a minus-strand RNA virus protein by a promoter including a cytomegalovirus enhancer and a -bird avian j8-actin promoter,
- a DNA encoding a ribozyme and a minus-strand RNA virus genomic RNA or its complementary strand is linked under the control of a promoter including cytomegalovirus enhancer and chicken j8-actin promoter.
- the ribozyme has an activity of cleaving the transcript between the ribozyme and genomic RNA or a complementary strand thereof,
- the method further comprises the step of expressing one or more genes encoding the envelope-constituting protein and the DNA encoding the envelope-constituting protein in the cell.
- the method according to any one of 1) to 8),
- the ribozyme has an activity of cleaving a transcript between the ribozyme and a minus-strand RNA viral genomic RNA or its complementary strand
- [20] A mammalian cell carrying the DNA of any one of [10] to [15], [21] The mammalian cell according to [20], which is a minus-strand RNA virus-producing cell, [22] the genomic RNA or its complementary strand contains one or more genes encoding an envelope-constituting protein. Deficient mammalian cell according to [20] or [21], [23] the mammalian cell according to any one of [20] to [22], wherein the minus-strand RNA virus is Sendai virus,
- FIG. 1 is a diagram showing a construction procedure of pCAGGS (B type) and pCAGGS (BSX).
- FIG. 2 is a diagram showing the construction procedure of pCALNdLWE-zeo-NP (Z).
- FIG. 3 is a diagram showing a construction procedure of pCAGGS-P4C ( ⁇ ).
- FIG. 4 is a diagram showing the construction procedure of pCAGGS-L (TDK).
- FIG. 5 shows the procedure for constructing pCAGGS-F.
- FIG. 6 is a diagram showing a construction procedure of pCAGGS-F 5 R.
- FIG. 7 is a diagram showing the procedure for constructing pCAGGS-F 5 R (continued from FIG. 6).
- FIG. 8 is a diagram showing the construction procedure of pCAGGS-T7.
- FIG. 9 is a diagram showing the construction procedure of pCAGGS-SeV and pCAGGS-SeV / ⁇ F-GFP.
- FIG. 10 shows the procedure for constructing pCAGGS-SeV and pCAGGS-SeV / ⁇ F-GFP (continued from FIG. 9).
- FIG. 1l This is a diagram showing the construction procedure of pCAGGS-SeV (continued from Fig. 10).
- FIG. 12 A photograph showing the results of HA assembly of a propagation-type SeV vector recovered by the HamRbz method. It is.
- FIG. 13 is a diagram showing the results of examination of the recovery efficiency of SeV / ⁇ F-GFP when the amount of genomic DNA was changed by the HamRbz method using CIU assembly. Almost no change at 2 g or more.
- FIG. 14 is a graph showing the results of examining the recovery efficiency of pCAGGS-F and pCAGGS-F5R during the SeV / ⁇ F-GFP recovery by HamRbz method. The force recovery efficiency when using pCAGGS-F5R was much improved.
- FIG. 15 is a photograph showing the results of HA assembly of propagating SeV (SeV (TDK) 18 + GFP) recovered by the pCAGGS-T7 method. HA activity was detected only when eggs were inoculated without dilution with BHK-21, BHK / T7, and 293T.
- SeV SeV
- FIG. 16 is a diagram showing the results of examining the recovery efficiency of SeV / ⁇ F-GFP when the amount of genomic DNA was changed in the pCAGGS-T7 method by CIU Atsay. There was little change between 0.5 and 5.0 g, but the recovery efficiency was the best when 5 g was used.
- FIG. 17 is a diagram showing the results of examination of the collection efficiency of SeV18 + GFP / ⁇ F by CIU assembly when the introduced reagent was changed in the pCAGGS-T7 method.
- the recovery efficiency was equivalent to or better than when TransIT-LT-1 was used.
- FIG. 18 is a diagram showing the results of examining the recovery efficiency of SeV / ⁇ F-GFP when the cell type was changed in the pCAGGS-T7 method by CIU assembly. Virus was recovered from all cells tested. The recovery efficiency was in the order of BHK / T7 ⁇ BHK-21 ⁇ 293T ⁇ LLC-MK2. (However,
- FIG. 19 is a graph showing the results of a CIU assay comparing the efficiency of SeV / ⁇ F-GFP recovery by HamRbz and pCAGGS-T7 methods.
- the PCAGGS-T7 method has a better reconstruction efficiency than the HamRbz method.
- FIG. 20 is a diagram showing the reconstruction of SeV / ⁇ M-GFP by the pCAGGS-T7 method.
- FIG. 21 is a diagram showing the reconstruction of SeV / ⁇ F-GFP by the pCAGGS-T7 method.
- FIG. 22 shows the results of comparison of vector reconstitution with CA promoter and vector reconstitution with CMV promoter.
- the efficiency of CA promoter vector reconstruction is overwhelmingly high.
- the present invention relates to the transcription of minus-strand RNA virus genomic RNA in virus-producing cells and the expression of all of the minus-strand RNA virus proteins that form ribonucleoprotein (RNP) with the genomic RNA.
- a CA promoter the enhancer and- ⁇ tori j8-actin promoter
- transcription of minus-strand RNA viral genomic RNA is induced directly or indirectly by a CA promoter.
- RNA virus genomic RNA DNA encoding the minus-strand RNA virus genomic RNA (minus strand) or its complementary strand (plus strand) under the control of the CA promoter.
- Link refers to ligating DNA encoding the gene downstream of the promoter so that transcription of the target gene occurs according to the promoter activity.
- RNA polymerase-encoding DNA DNA linked to RNA polymerase-encoding DNA under the control of the CA promoter and the recognition sequence of the RNA polymerase.
- RNA virus genomic RNA or its complementary strand is ligated with DNA, and these are introduced into cells.
- the recognition sequence of RNA polymerase is a DNA sequence that serves as a signal for the polymerase to initiate transcription.
- genomic polymerase or antigenomic RNA
- the CA promoter induces RNA polymerase expression, which induces transcription of the minus-strand RNA virus genome.
- Virus production at higher potency is possible.
- the negative-strand RNA viral protein that constitutes the genomic RNA and RNP forms a complex with the genomic RNA of the negative-strand RNA virus, and is replicated and encoded in the genome.
- an expression vector in which the coding sequence of the protein is simply linked downstream of the CA promoter. Can be used. Thereby, the expression of the protein group is directly induced by the CA promoter.
- the protein is a protein that forms a core excluding the viral envelope, and is typically N (nucleocapsid), P (phospho), and L (large) proteins. Depending on the virus species, the notation may differ, but the corresponding protein is obvious to those skilled in the art (Anjeanette Robert et al., Virology 247: 1-6 (1998). For example, N is denoted as NP. Sometimes.
- the method for producing the minus-strand RNA viral vector of the present invention specifically includes:
- Negative strand RNA viral genomic RNA or its complementary strand (antigenomic RNA) forms an RNP together with the viral protein that constitutes the negative strand RNA virus RNP, and the viral protein encoded in the genome is expressed and expressed in the cell.
- the genomic RNA and antigenomic RNA are amplified, and envelope constituent proteins are taken in to produce virus particles. By collecting this, you can get Winores.
- the generated virus can be appropriately amplified.
- a spread virus having an envelope gene when a mammalian cell is infected, the virus propagates according to a normal virus propagation cycle.
- the infectious virus can be amplified by introducing it into a cell (helper cell) that expresses the envelope-constituting protein.
- a promoter (CA promoter) containing a cytomegalovirus enhancer and a- ⁇ 13-actin promoter is (an enhancer of IE (immediate early) gene of 0 cytomegaloinores (CMV)).
- CMV cytomegaloinores
- the sequence and the promoter containing the (ii) -bird avian j8-actin gene promoter sequence CMV IE The enhancer of the immediately early gene of the desired CMV strain can be used.
- DNA containing the nucleotide sequence of SEQ ID NO: 1 can be exemplified.
- a fragment having a promoter activity which is a DNA fragment containing the transcription start site of genomic DNA of the- ⁇ bird ⁇ -actin gene, can be used.
- the base sequence of the chicken avian j8-actin gene promoter has been reported, for example, by TAKost et al. (Nucl. Acids Res. 11, 8287-8286, 1983).
- -The avian avian j8-actin gene promoter contains TATA boxes (Ann. Rev. Biochem. 50, 349-383, 1981) and CCAAT boxes (Nucl. Acids Res), which have relatively high G (guanine) and C (cytosine) contents.
- the G-guanine force at the position of 909 upstream of the translation initiation codon (ATG) of the original ⁇ -actin structural gene and the region up to the G (guanine) at position -7 are It is considered an intron. Since this intron has an activity to promote transcription, it is preferable to use a genomic DNA fragment containing at least a part of this intron.
- a specific example of such an avian chicken j8-actin promoter is, for example, DNA containing the base sequence of SEQ ID NO: 2.
- the intron acceptor sequence it is preferable to use the intron acceptor sequence of another gene, for example, the splicing acceptor sequence of Usagi ⁇ -globin.
- the acceptor site of the second intron immediately before the start codon of Usagi j8-globin can be used.
- a DNA containing the base sequence set forth in SEQ ID NO: 3 can be exemplified.
- a CA promoter is a downstream of a CMV IE enhancer sequence, a ⁇ - ⁇ -actin promoter containing up to a part of an intron is linked, and a desired intron acceptor sequence is downstream thereof.
- the added DNA is preferred.
- An example is shown in SEQ ID NO: 4.
- the coding sequence of the target protein may be added using the last ATG of this sequence as a start codon.
- a DNA encoding the minus-strand RNA virus genome or its complementary strand (which may be a plus strand or a minus strand) is ligated downstream of the above intron receptor sequence.
- the intron acceptor sequence and the DNA encoding the minus-strand RNA virus genome. It is preferable to insert DNA encoding a self-cleaving ribozyme.
- the CMV enhancer sequence used for the hybrid promoter and the- ⁇ 13-actin gene promoter may vary in sequence depending on the isolate or individual. These sequences may be slightly modified to add or delete restriction enzyme recognition sites or to insert a linker sequence. That is, these sequences may be the same or more (e.g., 70% or more, preferably 80% or more, preferably 90% or more, or 100) even if they are not exactly the same as those exemplified in SEQ ID NO: 4. % Or more) can be used as appropriate. Methods for introducing mutations into nucleotide sequences are well known to those skilled in the art. "L (Molecular cloning: a laboratory manual., 3rd ed., Joseph Sambrook, David W.
- CMV enhancer sequence and the- ⁇ tri ⁇ 8-actin gene promoter sequence examples include Genbank accession AF334827, AY237157, AJ575208, and X00182, and the sequences described therein can be used in the present invention.
- Genbank accession AF334827, AY237157, AJ575208, and X00182 examples include Genbank accession AF334827, AY237157, AJ575208, and X00182, and the sequences described therein can be used in the present invention.
- To identify the sequence required for the construction of the CA promoter create an alignment with SEQ ID NOs: 1 and 2 and select the relevant region.
- pCAGGS Niwa , H. et al. (1991) Gene. 108: 193-199, Japanese Patent Laid-Open No. 3-168087) and
- Examples of the CMV IE enhancer sequence and the variant of the ⁇ tri 13-actin promoter described above are exemplified in the CMV IE henno sequence described in SEQ ID NO: 1, and the sequence number: 2-
- the CMV IE henno sequence described in SEQ ID NO: 1 the sequence number: 2-
- the chicken avian j8-actin promoter 30% or less, preferably 20% or less, more preferably 15% or less, more preferably 10% or less, more preferably 5% or less, more preferably 3% or less of the bases are replaced.
- Deleted and / or inserted nucleotide sequences, and sequences exhibiting equivalent promoter activity are replaced.
- Each of these sequences shows a high homology with the nucleotide sequence set forth in SEQ ID NO: 1 or the nucleotide sequence set forth in SEQ ID NO: 2.
- a high homology for example, 70% or more, more preferably 75% or more, more preferably 80% or more, more preferably 85% or more, more preferably 90% or more, more preferably 93% or more, more preferably A nucleotide sequence having 95% or more, more preferably 96% or more identity. salt
- the identity of the base sequence can be determined using, for example, the BLAST program (Altschul, SF et al., 1990, J. Mol. Biol. 215: 403-410).
- the blast2sequences program (Tatiana A et al. (1999) FEMS Microbiol Lett. 174: 247-250) that compares two sequences can be used to create two sequence alignments and determine sequence identity.
- the gap is handled in the same way as a mismatch.
- an identity value is calculated for the entire base sequence described in SEQ ID NO: 1 or the entire base sequence described in SEQ ID NO: 2. Specifically, the ratio of the number of matching bases in the total base number (including the gap) of SEQ ID NO: 1 or 2 in the alignment is calculated. The gap outside of SEQ ID NO: 1 or 2 in the alignment is excluded from the calculation.
- the CMV enhancer sequence and the chicken j8-actin promoter sequence can also be isolated by CMV genomic nucleic acid and chicken genomic DNA force by hybridization.
- the CMV enhancer and the chicken j8-actin promoter used in the present invention are noblyzed under stringent conditions with the nucleotide sequence set forth in SEQ ID NO: 1, or the nucleotide sequence set forth in SEQ ID NO: 2, or its complementary sequence, respectively. DNA having a promoter activity equivalent to these may be used.
- a nucleic acid force probe comprising the nucleotide sequence set forth in SEQ ID NO: 1, the nucleotide sequence set forth in SEQ ID NO: 2, or a complementary sequence thereof is prepared, or is targeted for hybridization.
- Stringent hybridization conditions include, for example, 5xSSC, 7% (W / V) SDS, 100 microg / ml denatured salmon sperm DNA, 5x Denhardt solution (lx Denhardt solution is 0.2% polyvinylpyrrolidone, 0.2% bovine serum In a solution containing albumin and 0.2% ficoll) at 60 ° C., preferably 65 ° C., more preferably 68 ° C., followed by hybridization.
- the conditions are the same temperature, 2xSSC, preferably lxSSC, more preferably 0.5xSSC, more preferably O.lxSSC, with washing for 2 hours while shaking.
- One embodiment of the method for producing a minus-strand RNA virus of the present invention is that a virus-producing cell encodes a ribozyme and a minus-strand RNA virus genomic RNA or its complementary strand under the control of a CA promoter.
- This is a method of transcription of DNA linked with DNA.
- the initial transcripts that are transcribed by DNA force include ribozymes and negative RNA RNA genomic RNA (plus or minus strand).
- the ribozyme is designed to have an activity of cleaving between this ribozyme and the genomic RNA of the minus-strand RNA virus.
- Ribozymes in the transcribed RNA act in cis or trans, cleaving between the ribozyme and the genomic RNA of the negative-strand RNA virus, producing the negative-strand RNA viral genomic RNA with the correct genomic end.
- o Ribozyme-based methods only transcribe DNA to produce RNA, and have negative ends with precise ends. Since RNA RNA genomic RNA is self-generated, the virus production method is simple, and it is excellent in that it does not require special cells.
- a ribozyme that cleaves a specific sequence can be designed based on a known technique.
- hammerhead ribozymes have been isolated from viroids in nature (JM Buzayan et al., Nature, 1986, 323: 349-353; GA Prody et al., Science, 1986, 231: 1577).
- -1580 originally having a gold-plated structure with three loops and three helices, it can act in cis, and can also act in trans by separating the catalytic RNA portion from the target RNA .
- Such ribozymes have, for example, a loop and a helix, and pseudo-loop with the target sequence (Turner, P., The Biochemistry or tne Hammerhead ibozyme. In: 3 ⁇ 4canlon, KJ., And Kashani- Sabet, M. ed. Ribozymes in the Gene Tarapy of Cancer (Medical).
- N A, G, C, or U
- H A, C, or U.
- ribozymes that specifically cleave sites containing the UC, UU or UA and ⁇ ⁇ sequences in the target RNA of interest.
- Hairpin ribozymes are also useful for the purposes of the present invention. Hairpin ribozymes are found, for example, in the negative strand of satellite RNA of tobacco ring spot virus (J. M. Buzayan, Nature 323: 349, 1986). It has been shown that this ribozyme can also be designed to cause target-specific RNA cleavage (Y. Kikuchi and N. Sasaki, Nucleic Acids Res. 19: 6751, 1992; Hiroshi Kikuchi, Chemistry and Biology 30: 112 , 1992).
- ribozymes can be appropriately modified.
- a method is known in which a natural ribozyme is modified using an in vitro evolution system to obtain a highly active modified ribozyme (
- Ribozymes that function as dimers can also be used.
- a ribozyme having RNA cleavage activity generally contains a sequence essential for catalytic activity and a target recognition sequence necessary for target RNA recognition.
- the sequence necessary for the hammerhead ribozyme catalyst is, for example, ⁇ ' ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ 23 ⁇ 24 ⁇ -3' (SEQ ID NO: : 5), but is not limited to this.
- ⁇ is G, A, U, or C
- the 4 bases of 12 N 13 N 14 N 15 N are preferably formed into a loop, which is not limited to 4 bases, but about 2-7 bases (ie N), for example, 3-5 bases (ie N) 23
- a 24 N is a target recognition sequence and
- N is a base complementary to N of the above NUH, which is the target site.
- An example is 5'-GUGA-3. More specific sequences are shown in the examples.
- a target recognition sequence is added to both ends.
- the target recognition sequence is set to a sequence complementary to the sequence between the ribozyme and the minus-strand RNA virus genome.
- a DNA encoding a bacteriophage RNA polymerase is linked under the control of a CA promoter.
- This is a method for expressing DNA.
- the virus producing cell contains a DNA encoding the genomic RNA of the minus-strand RNA virus or its complementary strand linked downstream of the recognition sequence of the RNA polymerase.
- the expressed RNA polymerase transcribes the DNA encoding the minus-strand RNA viral genomic RNA ligated downstream of the recognition sequence of RNA polymerase to produce viral genomic RNA.
- RNA polymerase As the RNA polymerase to be used, a desired pacteriophage-derived RNA polymerase that recognizes a specific sequence (a target sequence of RNA polymerase, generally also referred to as a promoter sequence) and initiates transcription is specifically shown. Examples include E. coli T3 and T7 phages and Salmonella SP6 phages (Krieg, PA and Melton, DA 1987. In vitro RNA synthesis with SP6 RNA polymerase. Methods Enzymol. 155: 397-15; Milligan, JF , Groebe, DR, Witherell, GW, and Uhlenbeck, OC 1987.
- Typical recognition sequences of T3, T7, and SP6 are shown below.
- “+1” represents the first base to be transcribed.
- T7 TAATACGACTCACTATAGGGAGA (SEQ ID NO: 6)
- T3 AATTAACCCTCACTAAAGGGAGA (SEQ ID NO: 7)
- the region from -17 to -1 is essential for transcription and must be double-stranded.
- the arrangement shown in the underlined portion is used.
- Negative strand RNA viral genomic cDNA (plus or minus strand) is bound directly under the recognition sequence of the RNA polymerase. For efficient virus production, the positive strand should be transcribed.
- the RNA polymerase expression vector may be a desired DNA vector or a vector such as a retrovirus that is converted into DNA after introduction into a cell, but typically a plasmid vector is used.
- the vector may be a vector that exists and is expressed as an episome after introduction into the cell, or may be a chromosome-embedded vector that is integrated into the cell chromosome and expressed. For example, when a plasmid is used, it may be transiently expressed by transfection or a stably introduced strain integrated in a chromosome may be selected.
- the vector may be constitutively expressed, or may be an inducible expression type vector that can induce expression when necessary.
- it can be expressed inducibly using a sequence-specific recombinase (recombinant enzyme) (Example 2).
- Recombinases that can be used for this purpose include Cre recombinase and FLP recombinase.
- Cre is a cyclization recombinase of about 38 kDa possessed by Batateriophage P1 and specifically recombines between ⁇ sites (Sauer B, Henderson N. 1988. Site-specific DNA recombination in mammalian ceils by the re recombinase of oactenophage PI. Proc Natl Acad Sci USA 85: 5166-70; Sternberg N, Hamilton D. 1981.
- loxP is a 13 bp asymmetric inverted repeat sequence with 8 bp spacer (ATAACTTCGTATAATGTATGC
- TATACGAAGTTAT Underlined portion is inverted repeat (SEQ ID NO: 9).
- FLP recombinase is an approximately 49 kDa flippase recombinase derived from the 2 micron plasmid of yeast Saccharomyces cerevisiae. 1999. Temporal, spatial, and cell type-specific control of Cre— mediated DNA recombination in transgenic mice. Nat Biotechnol 17: 1091—6; Broach, JR, Guarascio, VR & Jayaram, M. (1982) Cell 29, 227-34; Cox, MM ( 1983) Proc. Natl. Acad. Sci. USA 80,
- the FRT sequence consists of a 13 bp repeat sequence with an 8 bp spacer (GAAGTTCCTATTCTCTAGAAAGTATAGGAACTTC: SEQ ID NO: 10) (Andrews, BJ et al. (1985).
- Target-specific recombination can also be performed using the above-mentioned loxP site and FRT site mutation sequences (Baszczynski, Hristopher et al, Ub Patent Application
- a DNA sandwiched between a pair of recombinase target sequences is inserted between the CA promoter and the coding sequence of a ribozyme or phage RNA polymerase.
- the inserted DNA fragment prevents the CA promoter from expressing the minus-strand RNA virus genome (attached with a ribozyme) or phage RNA polymerase.
- the DNA sandwiched between the target sequences is excised, and the minus-strand RNA virus genome or phage RNA polymerase is expressed from the CA promoter.
- recombinase can induce the expression of CA promoter.
- the DNA sandwiched between the target sequences of the recombinase should contain a transcription termination signal and / or termination codon, and when the recombinase does not act, the genome of the negative strand RNA virus or phage RNA It is preferable to ensure that the expression of the polymerase gene can be blocked.
- a marker gene can be appropriately inserted into the DNA sandwiched between the recombinase target sequences.
- DNA and cells for virus production described in this specification may be combined as appropriate. It can be a kit for virus production.
- the present invention relates to the following kits.
- kit according to any one of (1-1) to (1-3) above, further comprising DNA encoding an envelope-constituting protein.
- Genomics encoding the genomic RNA or its complementary strand strength envelope protein The kit according to (2-1) or (2-2) above, wherein one or more of the children are missing.
- kits according to any one of (3-1) to (3-5) above which is selected from the group consisting of the bacteriophage SP6 phage, T3 phage, and T7 phage.
- (3-7) The kit according to any one of (3-1) to (3-6) above, wherein expression of the DNA of (i) and / or GO can be induced by recombinase.
- the expression inducible by recombinase means that the DNA sandwiched between the recombinase recognition sequence is inserted between the CA promoter and the downstream DNA, and the DNA sandwiched by the recombinase is removed. In other words, the expression of DNA downstream of the CA promoter is induced.
- a minus-strand RNA virus is a virus containing as a genome RNA of a minus strand (an antisense strand complementary to a strand that senses a viral protein). Negative strand RNA is also called negative strand RNA.
- the minus-strand RNA virus used in the present invention includes, in particular, a single-strand minus-strand RNA virus (also referred to as a non-segmented minus-strand RNA virus).
- a “single-stranded negative-strand RNA virus” refers to a virus that has a single-stranded negative strand [ie, minus strand] RNA in its genome.
- Such viruses include paramyxoviruses (including Paramyxoviridae; Paramyxovirus, Morbillivirus, Rubulavirus, and Pneumovirus J3 ⁇ 4), Fubutu Winores (including Rhabdovindae; Vesiculovirus, Lyssavirus, and Epnemerovirus genera, etc.), philoirinoles (Filovirida) Honorotomyxoviridae (including Inluluenza virus A, B, C, and Thogoto-like viruses), Buja virus (
- Bunyaviridae including Bunyavirus, Hantavirus, Nairo virus, and Phlebovirus genus? Viruses belonging to the family such as _? Li and arenavirus (Arenaviridae) are included.
- a minus-strand RNA viral vector is an infectious virus based on a minus-strand RNA virus and refers to a carrier for introducing a gene into a cell.
- infectious refers to the ability of the minus-strand RNA viral vector to retain the ability to adhere to cells and introduce the gene contained in the vector into the adhered cells.
- Gene refers to any genetic material possessed by the minus-strand RNA virus vector produced in the present invention, and is not limited to foreign genes. That is, the minus-strand RNA virus vector may or may not have a foreign gene.
- the method of the present invention comprises the production of a viral vector having a transmission ability, and a defective vector having no transmission ability. It can be applied to both of one manufacture. In particular, it has the advantage of enabling efficient production of defective vectors that do not have propagation ability.
- having transmission ability means that when a virus vector infects a host cell, the virus replicates in the cell and infectious virus particles are produced.
- a recombinant virus refers to a virus produced via a recombinant polynucleotide, or an amplification product of the virus.
- a recombinant polynucleotide refers to a polynucleotide in which both ends or one end are not joined in the same manner as in the natural state.
- the recombinant polynucleotide is a polynucleotide in which the binding of the polynucleotide strand is artificially altered (cut and / or bound).
- a recombinant polynucleotide can be produced by a known genetic recombination method by combining polynucleotide synthesis, nuclease treatment, ligase treatment, and the like.
- a recombinant virus can be produced by expressing a polynucleotide encoding a viral genome constructed by genetic engineering and reconstructing the virus. For example, a method of reconstructing a virus from cDNA encoding the viral genome is known (Y. Nagai, A. Kato, Microbiol. Immunol, 43, 613-624 (1999)).
- a gene refers to genetic material and refers to a nucleic acid encoding a transcription unit.
- the gene can be RNA or DNA! /.
- a nucleic acid encoding a protein is called a gene of the protein.
- a gene may not encode a protein.
- a gene may encode a functional RNA such as a ribozyme or an antisense RNA.
- a gene can be a naturally derived or artificially designed sequence.
- “DNA” includes single-stranded DNA and double-stranded DNA.
- encoding a protein means that an ORF encoding the amino acid sequence of the protein is included in the sense or antisense so that the polynucleotide can express the protein under appropriate conditions.
- minus-strand RNA viruses examples include the Paramyxoviridae virus Sendai virus, New Katsunore f ⁇ Winores (Newcastle disease) 7 into the virus; ⁇ ze 1 / Inoles (Mumps virus) ⁇ Meunoles (Measles virus) ⁇ RS Winores (Respiratory syncytial virus) ⁇ Beef Thrower (rinderpest virus) ⁇ distemper virus ⁇ sanoreno ⁇ Rheinofrenovirus (SV5) ⁇ Human parainfluenza virus type 1,2,3 ⁇ Orthomyxoviridae
- Influenza virus from Orthomyxoviridae examples include Influenza virus from Orthomyxoviridae, Vesicular stomatitis virus from Rahabinoviridae, Vabicular stomatitis virus, and Rabies virus.
- viruses that can be used in the present invention are: Sendai virus (SeV), human parainfluenza virus-1 (HPIV-1), human parainfluenza virus-3 (HPIV-3). , Phocine distemper virus (PDV), canine distemper virus (CDV), dolphin molbillivirus (DMV), peste—des—petits— ruminants virus (PDPR), measles virus (MV), rinderpest virus (RPV), Hendra virus (Hendra) , Nipah virus (Nipah), human parainfluenza virus-2 (HPIV-2), simian parainfluenza virus 5 (SV5), human parainfluenza virus-4a (HPIV-4a), human parainfluenza virus-4b (HPIV-4b), mumps virus (Mumps), and Newcastle disease virus (NDV).
- PDV Phocine distemper virus
- CDV canine distemper virus
- DMV dolphin molbillivirus
- PDPR measles virus
- Sendai virus SeV
- human parainfluenza virus-1 HPIV-1
- human parainfluenza virus-3 HPIV-3
- phocine distemper virus PDV
- canine distemper virus CDV
- dolphin molbillivirus DMV
- Peste des—petits— ruminants virus (PDPR), measles virus (MV), rinderpest virus (RPV), Hendra virus (Hendra) ⁇ and viruses selected from the group consisting of Nipah virus (Nipah). It is done.
- the minus-strand RNA virus produced by the present invention is more preferably a virus belonging to the subclass of Nora myxovirus (including the genera Respirovirus, Rubravirus, and Morbillivirus) or its More preferably, it is a virus belonging to the genus Respirovirus (also referred to as Paramyxovirus) or a derivative thereof.
- Derivatives include viruses in which viral genes have been modified and viruses that have been chemically modified so as not to impair the ability of the gene to be introduced by the virus.
- respirovirus viruses to which the present invention can be applied examples include human parinfluenza virus type 1 (HPIV-1), human parainfluenza virus type 3 (HPIV-3), and ushipaline fluenza virus type 3 (BPIV). -3), Sendai virus (also called mouse parinfluenza virus type 1), and monkey parainfluenza virus type 10 ( SPIV-10) etc. are included.
- the paramyxovirus is most preferably a Sendai virus. These viruses may be derived from natural strains, wild strains, mutant strains, laboratory passage strains, and artificially constructed strains.
- the minus-strand RNA viral vector encodes the gene carried on the viral genomic RNA in an antisense manner.
- Viral genomic RNA forms a ribonucleoprotein (RNP) together with the viral protein of the minus-strand RNA virus, and this protein expresses a gene in the genome, and this RNA is replicated to form a daughter RNP.
- RNP ribonucleoprotein
- RNA RNA.
- the genome of a negative-strand RNA virus has a structure in which the viral gene is arranged as an antisense sequence between the 3 'leader region and the 5' trailer region.
- RNA encoding the ORF of each gene there is a transcription termination sequence (E sequence)-an intervening sequence (I sequence)-a transcription initiation sequence (S sequence), which separates the RNA encoding the ORF of each gene. It is transcribed as a cistron.
- the genomic RNA contained in the virus of the present invention contains N (nucleocapsid) and P (phospho) which are viral proteins necessary for the expression of the genes encoded by the RNA and the autonomous replication of the RNA itself.
- And L (Large) are encoded as antisense.
- the RNA may encode an M (matrix) protein necessary for the formation of virus particles. Further, the RNA may encode an envelope protein necessary for virus particle infection.
- the envelope protein of the minus-strand RNA virus includes F (fusion) protein, which is a protein that causes cell membrane fusion, and HN (hemadalun-neuraminidase) protein necessary for adhesion to cells.
- F fusion protein
- HN hemadalun-neuraminidase
- each gene in each virus belonging to the Paramyxovirus subfamily is generally expressed as follows.
- the NP gene is also expressed as “N ⁇ .
- HN is also expressed as H when it has no neuraminidase activity.
- Mobilivirus NP P / C / VMFH-L the accession number of the nucleotide sequence database of each gene of Sendai virus is M29343, M30202, M30203, M30204, M51331,
- M55565, M69046, X17218, P gene is M30202, M30203, M30204, M55565, M69046, X00583, X17007, X17008, M gene is D11446, K02742, M30202, M30203, M30204, M69046, U31956, X00584, X53056, F gene For D00152, D11446, D17334, D17335, M30202, M30203, M30204, M69046, X00152, X02131, for HN gene D26475, M12397, M30202, M30203, M30204, M69046, X00586, X02808, X56131, for L gene
- viral genes encoded by other viruses include N gene !, CDV, AF014953; DMV, X75961; HPIV-1, D01070; HPIV-2, M55320; HPIV-3, D10025. ; Mapuera, X85128; Mumps, D86172; MV, K01711; NDV, AF064091;
- PDPR X74443; PDV, X75717; RPV, X68311; SeV, X00087; SV5, M81442; and Tupaia, AF079780, P genes, CDV, X51869; DMV, Z47758; HPIV-1, M74081; HPIV-3, X04721; HPIV— 4a, M55975; HPIV— 4b, M55976; Mumps,
- HN H or G genes, CDV, AF112189; DMV, AJ224705; HPIV-1, U709498; HPIV-2, D000865; HPIV-3, AB012132; HPIV-4A, M34033; HPIV-4B, AB006954; Mumps, X99040; MV, K01711; NDV, AF204872; PDPR, Z81358; PDV, Z36979; RPV, AF132934; SeV, U06433; and SV-5, S76876.
- a plurality of strains are known for each virus, and there are genes that have an array ability other than those exemplified above depending on the strain.
- the ORFs encoding these viral proteins and the ORFs of foreign genes are placed antisense in the genomic RNA via the E-I-S sequence described above.
- the closest 3 'ORF in genomic RNA requires only the S sequence between the 3' leader region and the ORF, and not the E and I sequences.
- the ORF closest to the 5 'in genomic RNA requires only the E sequence between the 5' trailer region and the ORF, and does not require the I and S sequences.
- Two ORFs can also be transcribed as the same cistron using, for example, a sequence such as IRES. In such cases, an E-to-S sequence is not required between these two ORFs.
- RNA genome follows the 3 'leader region, followed by six ORFs that encode N, P, M, F, HN, and L proteins in antisense order.
- the genomic RNA is not limited to the arrangement of the viral gene, but preferably, like the wild type virus, it follows the 3 ′ leader region, followed by N, P, M, F, HN, It is preferable that ORFs encoding L protein and L protein are arranged in order, followed by a 5 ′ trailer region.
- the viral genes are arranged in the same manner as in the wild type as described above even in such a case.
- a vector carrying the N, P, and L genes autonomously expresses the RNA genomic force gene in the cell, and the genomic RNA is replicated.
- infectious virus particles are formed and released out of the cells by the action of genes encoding envelope spike proteins such as the F and HN genes and the M gene. Therefore, such a vector becomes a viral vector having transmission ability.
- a foreign gene When a foreign gene is loaded on a vector, it may be inserted into a non-coding protein region in this genome as described later.
- the minus-strand RNA viral vector may lack one of the genes possessed by the wild-type virus.
- a virus lacking the gene of the viral envelope component protein is useful as a highly safe gene transfer vector.
- a virus from which the gene for the envelope constituent protein has been deleted It can be recovered at a high titer without using a vaccinia virus vector.
- Envelope constituent proteins refer to viral proteins that are components of the viral envelope, including spike proteins that are exposed on the surface of the envelope and function to adhere to or infect cells, and lining proteins that function to form the envelope. .
- the genes of the envelope constituent proteins include F, HN, and M.
- viruses that lack one or more of these envelope protein genes are highly safe because they cannot form infectious virus particles in infected cells.
- Such reconstitution of the virus can be performed, for example, by supplying an exogenous gene product exogenously.
- it may be a completely different envelope protein that complements the infectivity of the virus.
- An example of such an envelope protein is VSV-G. That is, the envelope protein gene used to construct a virus from which the envelope protein gene has been deleted is not limited to the deleted gene as long as the formation and infectivity of the virus are ensured.
- the virus produced in this way has the ability to adhere to host cells and cause cell fusion in the same way as the wild type virus.
- the viral genome introduced into the cell has a defect in the viral gene, the same infectivity as the first Daughter virus particles with are not formed. Therefore, it is useful as a safe viral vector having a one-time gene transfer ability (WO00 / 70055, WO00 / 70070, and WO03 / 025570; Li, H.—0. Et al, J. Virol. 74). (14) 6564-6569 (2000)).
- Examples of the gene to be deficient in genomic force include F gene, HN gene, M gene, or any combination thereof.
- a plasmid expressing a recombinant negative-strand RNA virus genome deficient in the F gene can be transfected into a host cell together with an F protein expression vector and NP, P, and L protein expression vectors to produce a recombinant virus.
- a virus can be produced using a host cell in which the F gene is integrated into the chromosome. In this case, it is preferable that expression of the F gene can be induced in a specific manner using the above-mentioned recombinant enzyme target sequence so that the F gene can be induced and expressed.
- viruses-producing cells have activity in introducing nucleic acids even if the amino acid sequence is not the virus-derived sequence as it is. If it is equal to or greater than that of the natural form, mutations may be introduced, or a homologous gene from another virus may be substituted.
- a recombinant virus containing a protein different from the envelope protein of the virus from which the virus genome is derived can also be produced.
- a recombinant virus having a desired envelope protein can be produced by expressing in the cell an envelope protein other than the envelope protein originally encoded by the base virus genome during virus reconstitution. .
- a desired protein that confers the ability to infect cells is used.
- the envelope protein of other viruses for example, the G protein (VSV-G) of vesicular stomatitis virus (VSV) can be mentioned.
- the VSV-G protein may be derived from any VSV strain.
- the ability to use a VSV-G protein derived from an Indiana serotype strain is not limited thereto.
- the vector of the present invention can contain any combination of envelope proteins derived from other viruses.
- an envelope protein derived from a virus that infects human cells is suitable as such a protein.
- Such a protein is not particularly limited, and examples thereof include a retroviral unphotopick envelope protein.
- an envelope protein derived from the murine leukemia virus (MuLV) 4070A strain can be used as the retrovirus unphoto-mouth pick envelope protein.
- An envelope protein derived from MuMLV 10A1 can also be used (for example, pCL-lOAl (Imgenex) (Naviaux, RK et al, J. Virol. 70: 5701-5705 (1996)).
- proteins include simple herpesvirus gB, gD, gH, and gp85 proteins, EB virus gp350 and gp220 proteins, etc.
- Hepadnaviridae proteins include hepatitis B virus S protein and the like. These proteins may be used as fusion proteins in which the extracellular domain is bound to the intracellular domain of the F protein or HN protein.
- proteins such as adhesion factors, ligands, receptors, etc., antibodies or fragments thereof, or these proteins capable of adhering to specific cells on the envelope surface have these proteins in the extracellular region.
- a virus containing a chimeric protein having a polypeptide derived from the envelope protein of a minus-strand RNA virus in the intracellular region can also be produced. This can control the specificity of the viral vector infection.
- These may be encoded in the viral genome or supplied by expression from a gene other than the viral genome (for example, another expression vector or a gene on the host chromosome) upon reconstitution of the virus. .
- any viral gene contained in a virus is modified by a wild-type gene. May have been.
- at least one of the N, P, and L genes that are replication factors may be modified to enhance the function of transcription or replication.
- HN protein which is one of the envelope proteins, has both hemagglutinin activity and neuraminidase activity, which are hemagglutinins. For example, if the former activity can be weakened, It may be possible to improve the stability of the virus in it, and it is also possible to regulate the infectivity by, for example, modifying the activity of the latter.
- membrane fusion ability can be regulated by modifying the F protein.
- F-protein and / or HN protein antigen-presenting epitopes that can be antigen molecules on the cell surface are analyzed, and this is used to produce a recombinant virus vector that weakens the antigen-presenting ability of these proteins. I can do it.
- the minus-strand RNA viral vector may be one lacking an accessory gene.
- knocking out the V gene, one of the SeV accessory genes significantly reduces the pathogenicity of SeV against a host such as a mouse that does not impair gene expression and replication in cultured cells (Kato, A. et al., 1997, J. Virol. 71: 7266-7272; Kato, A. et al "1997, EMBO J. 16: 578-587; Curran, J. et al” (WO01 / 04272, EP1067179) o
- Such an attenuated vector is particularly useful as a viral vector for gene transfer without toxicity in vivo or ex vivo.
- the minus-strand RNA virus is excellent as a gene transfer vector, and only transcribes and replicates in the cytoplasm of the host cell and has no DNA phase, so it does not integrate into the chromosome (integration).
- integration chromosome
- minus-strand RNA viruses greatly contributes to the safety of vectorization.
- SeV Sendai virus
- o Transgene size or packaging flexibility due to lack of force psid structure protein There are merit advantages such as (flexibility).
- minus-strand RNA viral vectors represent a new class of high-efficiency vectors for human gene therapy. SeV vectors with transmissibility can introduce foreign genes up to at least 5 kb, and two or more genes can be expressed simultaneously by adding a transcription unit.
- Sendai virus is pathogenic to rodents and is not pathogenic to powerful humans known to cause pneumonia. This is also supported by previous reports that nasal administration of wild-type Sendai virus does not show serious adverse effects in non-human primates (Hurwitz, JL et al., Vaccine 15 : 533-540, 1997; Bitzer, M. et al "J. Gene Med, .5: 543-553, 2003; Slobod, KS et al" Vaccine 22: 3182-3186, 2004) o These characteristics of Sendai virus This suggests that Sendai virus vector can be applied to human treatment.
- a viral vector can encode a desired foreign gene in genomic RNA.
- a thread-replaceable virus vector containing a foreign gene can be obtained by inserting a foreign gene into the genome of the virus vector.
- the insertion position of the foreign gene is, for example, the viral genome Desired regions of the non-coding region of the protein, for example, between the 3 ′ leader region of genomic RNA and the viral protein ORF closest to the 3 ′ end, between each viral protein ORF, and / or 5 It can be inserted between the viral protein ORF closest to the end and the 5 'trailer region.
- a nucleic acid encoding a foreign gene can be inserted into the deleted region.
- An E-to-S sequence is constructed between the inserted foreign gene and the viral ORF. Two or more foreign genes can be inserted in tandem via the E-to-S sequence.
- a cloning site for inserting foreign genes into cDNA encoding genomic RNA can be designed.
- the position may be, for example, a desired position in a protein non-coding region of the genome, specifically between the 3 ′ leader region and the viral protein ORF closest to 3 ′, between each viral protein ORF, and It can be inserted between the viral protein ORF closest to the 5 'and / or the 5' trailer region.
- a cloning site can be designed in the deleted region.
- the cloning site can be, for example, a recognition sequence for a restriction enzyme.
- the cloning site may be a so-called multicloning site having a plurality of restriction enzyme recognition sequences. Cloning sites should exist at multiple locations in the genome so that multiple foreign genes can be inserted at different locations in the genome.
- the expression level of a foreign gene mounted on a vector can be regulated by the type of transcription initiation sequence added upstream (3 ′ side of the negative strand (negative strand)) of the gene (WO01 / 18223) o Moreover, it can be controlled by the insertion position of the foreign gene on the genome, and the expression level becomes lower as it is inserted closer to 3 ′ of the minus strand, and the expression level becomes higher as it is inserted closer to 5 ′.
- the insertion position of a foreign gene can be adjusted as appropriate in order to obtain a desired expression level of the gene and so that the combination with the genes encoding the preceding and subsequent viral proteins is optimal.
- the foreign gene be linked to a transcription start sequence with high efficiency and inserted near the 3 ′ end of the minus-strand genome. Specifically, it is inserted between the 3 'leader region and the viral protein ORF closest to 3'. Alternatively, it may be inserted between the viral protein gene closest to 3 'and the ORF of the second viral protein gene, or between the second and third viral protein genes from 3'.
- the viral protein gene closest to 3 'in the genome is the N gene
- the second gene is the P gene
- the third gene is the M gene.
- the transgene for example, by setting the insertion position of the foreign gene as 5 'as possible in the minus-strand genome, or by making the transcription start sequence less efficient, It is also possible to obtain an appropriate effect by keeping the expression level of the vector force low.
- the S sequence to be added when the nucleic acid encoding the foreign gene is inserted into the genome is, for example, a force Sendai virus that can use the desired S sequence of a minus-strand RNA virus.
- sequences are represented by 5'-AGGGTCAAAG-3 '(SEQ ID NO: 15), 5'-AGGGTGAATG-3' (SEQ ID NO: 16), and 5'- AGGGTGAAAG-3 ′ (SEQ ID NO: 17).
- E sequence of the Sendai virus vector for example, 3′-AUUCUUUU-5 ′ (SEQ ID NO: 18) (5′-TAAGAAAAA-3 ′ (SEQ ID NO: 19) for DNA encoding a plus strand) is preferable.
- 3′-GAA-5 ′ (5′-CTT-3 for plus-strand DNA) may be used as the I sequence.
- RNA virus in mammalian cells, the viral proteins necessary for reconstitution of RNP containing the genomic RNA of the negative-strand RNA virus, ie, N, P, and L proteins Expression and transcription of the cDNA encoding the genomic RNA of the minus-strand RNA virus are induced by the CA promoter. Transcription can produce a negative-strand genome (ie, the same antisense strand as the viral genome) or a positive strand (a Inchigenome. Complementary strand of genomic RNA. ) Can also be used to reconstitute the virus RNP. In order to increase the efficiency of vector reconstitution, a plus strand is preferably generated.
- the RNA ends reflect the ends of the 3 ′ leader sequence and the 5 ′ trailer sequence as accurately as possible, as in the case of the natural viral genome.
- This can be achieved by adding a self-cleaving ribozyme to the 5 ′ end of the transcript as described above, and accurately cutting the end of the minus-strand RNA virus genome by the ribozyme.
- the RNA polymerase recognition sequence of a nocteriophage is used as a transcription initiation site, and the RNA polymerase is expressed in the cell.
- a self-cleaving ribozyme can be encoded at the 3' end of the transcript, and the 3 'end can be accurately cut out by this ribozyme.
- the ribosome can be a self-cleaving ribozyme derived from the antigenomic strand of hepatitis delta virus.
- a DNA sample containing the cDNA base sequence of the target foreign gene When integrating a foreign gene, first prepare a DNA sample containing the cDNA base sequence of the target foreign gene. It is preferable that the DNA sample can be confirmed as a single plasmid by electrophoresis at a concentration of 25 ng / micro-l or more.
- the target cDNA base sequence contains a Notl recognition site, use a site-directed mutagenesis method, etc. to modify the base sequence so that the encoded amino acid sequence is not changed, and remove the Notl site in advance. It is preferable to keep it.
- the gene fragment of interest is amplified from this sample by PCR and recovered.
- both ends of the amplified fragment become Notl sites.
- the E-to-S sequence should be included in the primer so that the E-to-S sequence is placed between the ORF of the native gene and the ORF of the viral genes on both sides.
- the length of the synthetic DNA is designed so that the length of the final insert fragment containing the added EIS sequence is a multiple of 6 (so-called “rule of six J; Kolakofski, D. et al., J. Virol. 72: 891-899, 1998; Calain, P. and Roux, L., J. Virol. 67: 4822-4830, 1993; Calain, P.
- the E-1-S sequence is, for example, the S-sequence, I-sequence, and E-sequence of the Sendai virus minus strand on the 3 ′ side of the oligo DNA of the insert fragment, for example, respectively.
- 5′-TTTTTCTTACTACGG-3 ′ (SEQ ID NO: 21) can be used.
- PCR For PCR, an ordinary method using Taq polymerase or other DNA polymerase can be used.
- the amplified target fragment is digested with Notl and then inserted into the Notl site of a plasmid vector such as pBluescript. Confirm the base sequence of the obtained PCR product with a sequencer and select a plasmid with the correct sequence.
- the insert is excised from this plasmid with Notl and cloned into the Notl site of the plasmid containing the genomic cDNA. It is also possible to obtain recombinant Sendai virus cDNA by inserting directly into the Notl site of genomic cDNA without using a plasmid vector.
- recombinant Sendai virus genomic cDNA can be constructed according to literature methods (Yu, D. et al., Genes Cells 2: 457-466, 1997; Hasan, MK et al , J. Gen. Virol. 78: 2813-2820, 1997) 0
- double-stranded DNA with an EIS sequence linked to the 3 'side of the sense strand of a foreign gene is synthesized. This is inserted immediately 3 'to the desired S sequence of the cDNA encoding the plus strand of the genome.
- a restriction enzyme site for example, Notl site
- the encoded DNA can be inserted using restriction enzyme sites (
- the DNA encoding the viral genomic RNA thus prepared is efficiently transcribed in cells in the presence of the viral proteins (L, P, and N) by the CA promoter.
- Viral vectors can be reconstituted.
- the method of the present invention can be used in various ways. Can be applied to recombinant virus reconstitution method (W097 / 16539;
- minus-strand RNA viruses including nora influenza, vesicular stomatitis virus, rabies virus, measles virus, Linda-pest virus, Sendai virus, etc. have high DNA power and efficiency. Can be reconfigured.
- infectious virus particles are not formed as they are, but they do not form host cells. Infectious virus particles can be formed by introducing these deleted genes and / or genes encoding envelope proteins of other viruses separately into cells and expressing them ( Hirata, T. et al "2002, J. Virol. Methods, 104: 125-133; Inoue, M. et al., 2003, J. Virol.
- envelope-constituting proteins are also preferably expressed by the CA promoter, in order to achieve this, DNA encoding the envelope-constituting protein downstream of the CA promoter.
- the expression of the envelope constituent protein can be directly expressed by the CA promoter.
- One specific method is, for example, a method of transient virus production.
- One of these methods is to construct a vector that transcribes a DNA encoding the genomic RNA of the ribozyme and the minus-strand RNA virus or its complementary strand under the control of the CA promoter, and constructs an RNP containing the genomic RNA of the minus-strand RNA virus.
- This is a method for transfecting mammalian cells with a vector that expresses the viral protein to be expressed together with a vector that is expressed under the control of the CA promoter.
- Minus strand from CA promoter in the presence of viral proteins that make up RNP RNA viral genomic RNA or antigenomic RNA is transcribed to form a functional RNP and reconstruct the virus.
- a minus-strand RNA viral vector can be obtained by recovering the minus-strand RNA virus or its propagation product produced in cells.
- a vector comprising a DNA encoding a butteriophage RNA polymerase under the control of a CA promoter, and a minus-strand RNA virus linked downstream of the recognition sequence of the RNA polymerase.
- a vector containing genomic RNA or DNA encoding its complementary strand is used together with a vector that expresses the viral proteins (N, L, and P) that make up the RNP containing the genomic RNA of the minus-strand RNA virus under the control of the CA promoter. Transfect mammalian cells.
- RNA polymerase is expressed from the CA promoter, which transcribes negative-strand RNA viral genomic RNA or antigenomic RNA, forming a functional RNP and reconstructing the virus. Is done.
- a minus-strand RNA virus vector can be obtained by recovering the minus-strand RNA virus produced by the cell or its propagation product.
- a plasmid As a vector used for transfection, for example, a plasmid is preferable. Each plasmid may express one type of protein, or a plurality of proteins may be expressed from one plasmid.
- one plasmid can have a plurality of promoters, or one promoter can be used to generate a plurality of proteins using IRES or the like.
- IRES non-promoter mechanism
- At least the viral proteins (L, P, and N) that constitute the RNP containing the genomic RNA of the minus-strand RNA virus are driven by different CA promoters.
- Transient virus production by transfection as described above is excellent in that virus can be rapidly produced without using special cells.
- nucleic acid transfection into cells examples include the calcium phosphate method (Graham, F. and Van Der Eb, J., 1973, Virology 52: 456; Wigler, M. and Silverstein, S., 1977). , Cell 11: 223), methods using various transfection reagents, electroporation, and the like can be used.
- calcium phosphate method for example Chen and
- electroporation is highly versatile in that it has no cell selectivity, pulse current duration, pulse shape, electric field (gap between electrodes, voltage) strength, buffer conductivity, Applied by optimizing DNA concentration and cell density.
- a method using a transfection reagent is suitable because it is easy to operate and a large number of cells can be used to examine a large number of specimens.
- Superfect Transfection Ragent QIAGEN, at No. 301305
- DOSPER Liposomal Transfection Reagent (Roche, Cat No.
- proteins and / or RNA necessary for virus production are expressed from the chromosomes of virus-producing cells.
- DNA that transcribes viral genomic RNA or its complementary strand from the CA promoter, or DNA that expresses the RNA promoter derived from the CA promoter power butteriophage is integrated into the chromosome of the mammalian cell.
- the method using the obtained cell line is mentioned.
- virus genomic RNA and RNA polymerase are usually not expressed from the CA promoter! However, it is also preferable to be able to induce expression in response to stimulation. Use the above ⁇ or FRT
- the gene can be expressed inductively by the CA promoter force. Cre recombinase and FLP recombinase are expressed during virus production to induce expression from the CA promoter.
- the viral genomic RNA or its complementary strand is transcribed in the presence of the viral proteins (N, L, and P) that constitute the RNP containing the genomic RNA of the negative-strand RNA virus.
- RNA virus can be reconstructed.
- RNP constituent proteins may be supplied by plasmid vector encoding them.
- each plasmid used for transfection in the method of excising the minus-strand RNA virus genome by ribozyme (for example, HamRbz method), 0.1 ⁇ g-2 ⁇ g (NP expression plasmid) More preferably 0.3 ⁇ g), P expression plasmid 0.1 g—2 ⁇ g (more preferably 0.5 ⁇ g), L expression plasmid 0.5 ⁇ g—4.5 ⁇ g (more preferably 2.0 ⁇ g), F Using 0.1 ⁇ g—5 ⁇ g (more preferably 0.5 ⁇ g) of the expression plasmid and 0.5 g—5 g (more preferably 5 g) of the plasmid encoding the viral genomic RNA (plus strand or negative strand). Good.
- the plasmids described in the examples may be used in transfection in the following amounts.
- each plasmid described in the Examples may be used in transfection in the following amounts.
- various transfection reagents can be used. Examples include DOTMA (Roche), Superfect (QIAGEN # 301305), DOTAP ⁇ DOPE, DOSPER (Roche # 1811169), TransIT-LTl (Mirus, Product No. MIR 2300), and the like.
- black mouth quince can also be added (Calos, MP, 1983, Proc. Natl. Acad. Sci. USA 80: 3015).
- viral gene expression from RNP and RNP replication progress, and the virus is amplified.
- the obtained virus solution (culture supernatant) can be appropriately diluted and repeated for re-amplification to remove contaminating complications.
- the method of the present invention uses a vaccinia virus that expresses T7 RNA polymerase, it is not necessary to repeat reamplification to remove the vaccinia virus!
- the resulting vector can be stored at -80 ° C.
- helper cells used to construct a minus-strand RNA viral vector that lacks the envelope constituent protein gene include, for example, the missing envelope constituent protein or another envelope protein (eg, VSV-G or unphotopic mouth pick).
- env etc. can be produced by transfection (see WO00 / 70055 and WO00 / 70070; Hasan, MK et al, 1997, J. General Virology 78: 2813-2820).
- a vector having a recombinant enzyme target sequence such as Cre / loxP inducible expression plasmid pCALNdlw (Arai, T. et al., J. Virology 72, 1998, pi 115-1121).
- pCALNdlw a vector having a recombinant enzyme target sequence
- pCALNdlw a recombinant enzyme target sequence
- pCALNdlw a vector having a recombinant enzyme target sequence
- pCALNdlw a recombinant enzyme target sequence
- LLC-MK2 cells are cultured at 37 ° C in MEM supplemented with 10% heat-treated non-immobilized rabbit serum (FBS), penicillin G sodium 50 units / ml, and streptomycin 50 micro-g / ml. Incubate with 5% CO. SeV-F gene product is a cell
- the plasmid pCALNdLw / F which is designed to induce the expression of the envelope protein gene by Cre DNA recombinase because of its toxicity, has been well-known from the calcium phosphate method (mammalian transfection kit (Stratagene)). Gene transfer into LLC-MK2 cells according to protocol. After clotting the cells by limiting dilution, the cells are expanded and selected for a cell line that highly expresses the transgene. For this purpose, for example, adenovirus AxCANCre is prepared by the method of Saito et al. (Saito et al., Nucl. Acids Res. 23:
- SeV / AMAF M and F gene deletion SeV
- SeV / ⁇ F maintains a high level of infectivity and gene expression in vitro and in vivo, which is similar to that of wild-type SeV vectors. is there.
- the titer of the recovered virus can be determined by, for example, CIU (Cell Infecting Unit) measurement or hemagglutination activity (HA) measurement (WOOO / 70070; Kato, A. et al., 199, Genes Cells 1: 569—579; Yonemitsu, Y. & Kaneda, Y., Hemaggulutinating virus of Japan—polar— mediated gene delivery to vascular cells. Ed. By Baker AH. Molecular Biology of Vascular Diseases. Method in Molecular Medicine: Humana Press: pp. 295-306, 1999).
- CIU Cell Infecting Unit
- HA hemagglutination activity
- the titer can be quantified by directly counting infected cells using the marker as an indicator (eg, as GFP-CIU).
- the titer measured in this way can be handled in the same way as CIU (WOOO / 70070).
- the host cells used for reconstitution are not particularly limited.
- culture of monkey kidney-derived LLC-MK2 cells and CV-1 cells eg, ATCC CCL-70
- hamster kidney-derived BHK cells eg, ATCC CCL-10
- Cells, human-derived cells and the like can be used.
- Virus vector using chicken eggs One manufacturing method has already been developed (Nakanishi et al., (1993), "Advanced Technology Protocol III of Neuroscience Research, Molecular Neuronal Physiology", Koseisha, Osaka, ⁇ .153- 172). Specifically, for example, fertilized eggs are placed in an incubator and cultured at 37-38 ° C for 9-12 days to grow embryos. The virus vector is inoculated into the allantoic cavity and the eggs are cultured for several days (eg, 3 days) to propagate the virus vector. Conditions such as the culture period may vary depending on the recombinant Sendai virus used. Thereafter, the urine containing the virus is collected.
- the virus vector of the present invention has, for example, 1 X 10 5 CIU / mL or more, preferably 1 X 10 6 CIU / mL or more, more preferably 5 X 10 6 CIU / mL or more, more preferably 1 X 10 7 CIU / mL or more, more preferably 5 X 10 7 CIU / mL or more.
- a titer of preferably 1 ⁇ 10 8 CIU / mL or more, more preferably 5 ⁇ 10 8 CIU / mL or more.
- Viral titers can be measured by methods described herein and elsewhere (Kiyotani, K. et al, Virology 177 (1), 65-74 (1990); WO00 / 70070).
- the recovered viral vector can be purified to be substantially pure.
- the purification method can be performed by a known purification / separation method including filtration (filtration), centrifugation, adsorption, column purification, or any combination thereof.
- “Substantially pure” means that the virus component occupies a major proportion in the solution containing the virus vector.
- a substantially pure viral vector composition has 10% (by weight) of the total protein contained in the solution (except for proteins added as carriers and stabilizers) as components of the viral vector. / Weight) or more, preferably 20% or more, more preferably 50% or more, preferably 70% or more, more preferably 80% or more, and further preferably 90% or more.
- a paramyxovirus vector as a specific purification method, a method using cellulose sulfate ester or crosslinked polysaccharide sulfate ester (Japanese Patent Publication No. 62-30752, Japanese Patent Publication No. 62-33879, and Japanese Patent Publication No. No. 62-30753), and a method of adsorbing to a sulfated-fucose-containing polysaccharide and / or a degradation product thereof (WO97 / 32010) and the like.
- the vector can be combined with a desired pharmacologically acceptable carrier or vehicle as necessary.
- a “pharmaceutically acceptable carrier or vehicle” is a material that can be administered with a vector and does not significantly inhibit gene transfer by the vector. Examples of such a carrier or medium include sterilized water, sodium chloride solution, dextrose solution, lactic acid-containing Ringer solution, culture solution, serum, and phosphate buffered saline (PBS). It is possible to formulate by combining one as appropriate.
- the composition of the present invention may contain a liposomal membrane stabilizer (eg, sterols such as cholesterol).
- composition of the present invention may be in the form of an aqueous solution, capsule, suspension, syrup and the like.
- the composition of the present invention may also be a composition in the form of a solution, a lyophilized product or an aerosol. In the case of a freeze-dried product, it may contain sorbitol, sucrose, amino acids, various proteins, and the like as stabilizers.
- an immunostimulant such as cyto force-in, cholera toxin, or salmonella toxin can be added to increase immunogenicity.
- vaccine compositions include miyonon, incomplete Freund's adjuvant, MF59 (oil emulsion), MTP-PE (including muramyl tnpeptide derived from mycobacterial cell wall, Q3 ⁇ 4-21 ⁇ soapbarK tree Quilaia It can also be combined with a zojuvant such as saponana.
- cytosines that enhance the adjuvant effect. Examples of such genes include: i) single-stranded IL-12 (Proc. Natl. Acad. Sci. USA 96 (15):
- the dose of the minus-strand RNA virus vector in vivo varies depending on the disease, patient weight, age, sex, symptoms, administration composition form, administration method, transgene, etc. It is possible to determine appropriately.
- Vector administered is preferably about 10 5 CLU / ml to about 10 u CIU / ml, more preferably about 10 7 CIU / ml to about 10 9 CIU / ml, most preferably rather about 1 X 10 8 CIU /
- an amount in the range of ml to about 5 ⁇ 10 8 CIU / ml is administered in a pharmaceutically acceptable carrier.
- the dose per dose is 2 X 10 5 CIU—2 X 10 11 CIU is preferred for a single dose or multiple doses within the range of clinically acceptable side effects.
- an amount converted from the above dose can be administered based on the body weight ratio between the target animal and human or the volume ratio (for example, average value) of the administration target site. If it is necessary to inhibit the growth of viral vectors after administration of a transmissible negative-strand RNA viral vector to an individual or cell, such as when treatment is complete, an RNA-dependent RNA polymerase inhibitor should be added. If administered, it is possible to specifically inhibit only the growth of the viral vector without damaging the host.
- the vector is contacted with the target cell outside the body (for example, in a test tube or petri dish).
- the MOI is preferably administered between 1 and 500, more preferably 2-300, more preferably 3-200, even more preferably 5-100, and even more preferably 7-70.
- the organisms to be administered with the minus-strand RNA viral vector of the present invention include desired mammals including humans and non-human mammals that are not particularly limited. Specifically, humans, mice, rats, Nu, Pig, Cat, Usi, Usagi, Hidge, Goat and Monkey.
- pCALNdLw (Arai, T. et al. J. Virology 72, 1998, pi 115-1121) was digested with Xho I, purified with the Qiaquick PCR Purification kit, and ligated. The product from which the Xho I fragment was removed was selected, and the resulting product was designated as pCAGGS (B type). pCAGGS (B type) was quenched with Sal I, blunted with Pfo DNA polymerase, purified with Qiaquick PCR Purification kit, and ligated. The Sal I site was crushed and selected as pCAGGS (BSX).
- pCALNdLw was digested with Spe I and EcoT22I and separated by agarose gel electrophoresis.
- the 2651 bp fragment and 3674 bp fragment were excised and purified with the Qiaquick gel Extraction kit.
- the 2651 bp fragment was further digested with Xho I, separated by agarose gel electrophoresis, and the 1761 bp band was purified.
- CTCAC-3 ' (SEQ ID NO: 22) and primers CAGTCCTGCTCCTCGGCCACGAAGTGCACGCAGTTG-3 ′ (SEQ ID NO: 23) was amplified by PCR, digested with Xhol and EcoT22I, separated by agarose gel electrophoresis, and a 438 bp band was excised and purified with the Qiaquick Gel Extraction kit. The band containing this Zeocin resistance gene and the above three fragments of 3674 bp and 1761 bp were ligated by ligation to obtain pCALNdLw-Zeo.
- This pCALNdLw-Zeo was digested with Swal and an Eco RI linker (STRATAGENE) was inserted to obtain pCALNdLWE-Zeo.
- Sendai virus cDNA with multicloning site introduced JP 2002-272465 (hereinafter referred to as pSeV (TDK)) is digested with Not I and Xho I, separated by agarose gel electrophoresis, and 1669 bp band was cut out and purified with Qiaquick Gel Extraction kit.
- a fragment containing this NP gene was inserted into NotI and XhoI digested pGEMllZ +) (Promega) to obtain pGEM-NP (Z) PCR14-3. Use this as a template for primer
- pCALNdLWE-Zeo-NP Z
- pCALNdLWE-Zeo-NP Z
- Xho I Xho I
- a plasmid from which the Xho I fragment was removed was constructed. This was designated as pCAGGS-NP.
- pCALNdLw-HygroM (Inoue, M. et al. J. Virology 77, 2003, p6419— 6429) was digested with Xhol, separated by agarose gel electrophoresis, and a 1679 bp band containing the Hygromycin resistance gene was excised. Qiaquick Gel Purified with Extraction kit.
- pCALNdLw was digested with Xho I, and after agarose gel electrophoresis, a 4864 bp band was excised and purified with the Qiaquick Gel Extraction kit. Ligation using both fragments
- pCALNdLw- Hygro was constructed. This pCALNdLw-Hygro was digested with Swal and the Nhe I linker (STRATAGENE) was inserted to obtain pCALNdLWN-Hygro. Using 4C (-) SeV cDNA (Kurotani, Kato, Nagai. Et al Genes to Cells 3, 1998, pill—124) as a template -3 '(SEQ ID NO: 26) and
- PCR was performed with KOD-PLUS DNA Polymerase (TOYOBO) using -3 ′ (SEQ ID NO: 27).
- the product was purified using a gene clean kit, the PCR product was digested with Nhe I, and purified using a gene clean kit. This was introduced into the Nhe I site of pCALNdLWN-hygro above,
- pCALNdLWN-hygro-P (Z) k4C (-) was obtained. This was digested with Xho I, purified with the Qiaquick PCR Purification kit, ligated, and selected from the Xho I fragment (Hygromycin resistance gene region) to obtain pCAGGS-P4C (-).
- pSeV pSeV
- pCALNdLw / F (Li, H.-O. et al. J. Virology 74, 2000, p6564-6569) was digested with Xho I, purified and ligated to remove the Xho I fragment (neomycin resistance gene region). PCAGGS-F was obtained.
- Use pCALNdLw-ZeoF Japanese Patent Application No.
- PCR was performed using Pfo Turbo with a combination of 5′-C ATTTTGGC AAAGAATTGATTAATTCGAG-3 ′ (SEQ ID NO: 28) and No. 31).
- PCR product 51 was subjected to agarose gel electrophoresis and stained with ethidium bromide. As a result, an expected 2.6 kb band was detected. Therefore, the remaining PCR products were purified using the Qiaquick PCR Extraction kit. After that, restriction enzyme treatment was continuously performed with Dra III and Mfe I, and after separation by agarose gel electrophoresis, a band of about 2.0 kb was cut out.
- pCALNdLw-Zeo-F was digested successively with Dra III and Mfe I, separated by agarose gel electrophoresis, a band of about 6 kp was excised and purified with GENECLEAN II KIT (BIO).
- PCALNdLw-Zeo-F forin was obtained by ligating the pCALNdLw-Zeo-F Drain-Mfe I fragment and the PCR Dralll-Mfe I fragment.
- PCR was performed with a primer combination of TGA-3 ′ (SEQ ID NO: 33) and 5′-AAATCCTGGAGTGTCTTTAGAGC-3 ′ (SEQ ID NO: 34). After separation by electrophoresis, a band of about 1.4 kbp under condition (I) and a band of about 200 bp under condition (II) were excised and purified with Qiaquick gel Extraction kit. Mix 50-fold diluted one by one, and further
- PCR was performed using Pfo Turbo with 5′-AAATCCTGGAGTGTCTTTAGAGC-3 ′ (SEQ ID NO: 34) primer combination.
- a 5 ⁇ l PCR product was separated by agarose gel electrophoresis and then stained to confirm a band of about 1.6 kbp. The remainder was purified with the Qiaquick PCR Purification kit, digested with Cla I and Fsel, separated by agarose gel electrophoresis, and the approximately 1 kbp band was excised and purified with the Qiaquick PCR Purification kit.
- This pMW219-T7-Eco RI was digested with Eco RI, the Eco RI fragment containing T7 RNA Polymerase was purified, and introduced into the Eco RI site of pCALNdLWE to obtain pCALNdLWE-T7.
- Annealing was carried out at 15 ° C for 15 minutes, 25 ° C for 15 minutes, and 4 ° C for 4 minutes.
- This mixture was ligated with the pSeV (TDK) Notl-Kpn I purified solution to obtain pSeV / Linker.
- pGEM-F5 5 '-CTTAACTATGCGGC ATC AGAGC-3' SEQ ID NO: 37
- pGEM-Rl 5 -GCCGATTCATTAATGCAGCTGG-3 '(SEQ ID NO: 38) were used.
- PCR reaction was performed using (TOYOBO) and purified using the Qiaquick PCR Purification kit. RibLFl using the purified solution as a template
- RibLF2 5 -CTATAGGAAAGGAATTCCTATAGTCACCAAACAAGAG-3 '(SEQ ID NO: 39) and pGEM-Rl 5 -GCCGATTCATTAATGCAGCTGG-3' (SEQ ID NO: 38) are used to perform a PCR reaction using KOD-PLUS (TOYOBO) and a Qiaquick PCR Purification kit Used to purify. Using this purified solution as a template, RibLF2
- RibLF3 5 -GATGAGTCCGTGAGGACGAAACTATAGGAAAGGAATTC-3 '(SEQ ID NO: 40) And pGEM—Rl 5′—GCCGATTCATTAATGCAGCTGG—3 ′ (SEQ ID NO: 38), PCR was performed using KOD-Plus (TOYOBO), and purification was performed using the Qiaquick PCR Purification kit. Furthermore, using this purified solution as a template, RibLF3
- pGEM-Rl 5′-GCCGATTCATTAATGCAGCTGG-3 ′ (SEQ ID NO: 38) were used to perform a PCR reaction using KOD-Plus (TOYOBO) and purified using the Qiaquick PCR Purification kit.
- This purified PCR product was introduced into the Swa I site of pCAGGS (BSX) to obtain pCAGGS-SeV (m).
- pSeV18 + b (+) / AF- EGFP Li, H.-O. et al. J. Virology 74, 2000, p6564-6569 was digested with Not I and Sal I and separated by agarose gel electrophoresis.
- the 1972 bp band was excised, purified with the Qiaquick Gel Extraction kit, digested with Not I and Sal I, and ligated with purified pCAGGS-SeV (m) to obtain pCAGGS-SeV (m) A.
- pSeV (+) 18 / ⁇ F was digested with Nhe I and Kpn I, separated by agarose gel electrophoresis, the 3325 bp band was excised, purified with Qiaquick Gel Extraction kit, Not I and Sal I were eliminated, and purified Ligation with pCAGGS-SeV (m) gave pCAGGS-SeV (m) AC.
- pSeV18 + b (+) (Li, H.-O. et al. J. Virology 74, 2000, p6564-6569) was digested with Sal I and Nhe I and purified with a Qiaquick PCR purification kit. And it was introduced into Sal I-Nhel site of LITMUS38 (NEW ENGLAND BioLabs) to obtain Litmus38 / SeV Sal I-Nhe I.
- This Litmus38 / SeV Sal I-Nhe I was digested with Sal I and Nhe I, separated by agarose gel electrophoresis, a 9886 bp band was excised, purified with the Qiaquick Gel Extraction kit, and pCAGGS-SeV (m) AC PCAGGS-SeV was obtained by introducing it into the Sal I-Nhe I site.
- pSeV / ⁇ F-EGFP (Li, H.-O. et al. J. Virology 74, 2000, p6564-6569) was digested with Sal I and Nhe I and purified with a Qiaquick PCR purification kit. Then, it was introduced into the Sal I-Nhel site of LITMUS38 (NEW ENGLAND BioLabs) to obtain Litmus38 / Sal I-Nhe I ⁇ F-GFP.
- This Litmus38 / Sal I-Nhe I ⁇ F-GFP was digested with Sal I and Nhe I, separated by agarose gel electrophoresis, an 8392 bp band was excised, purified with the Qiaquick Gel Extraction kit, and pCAGGS- SeV (m ) PCAGGS—SeV / AF—GFP was obtained by introducing it into the Sal I—Nhe I site of AC.
- Example 2 Establishment of T7 RNA Polymerase expression BHK-21 (hereinafter referred to as BHK / T7)
- the pCALNdLWE-T7 constructed above was applied to BHK-21 cells (ATCC CCL-10) using mammalian transfection kit (3 ⁇ 4tratagene) or buperFect (Qiagen) and 400 g / ml. Incubate with D-MEM containing G418 at 37 ° C, 5% CO for 2 weeks.
- a drug resistant clone was obtained which grew from a single cell.
- T7 RNA Polymerase was confirmed by Western blot analysis using Polymerase rabbit polyclonal antibody.
- pGEM-IRES-Luci was transcribed using SuperFect. After 24 hours, cells were collected, and luciferase activity was measured with MiniLumat LB9506 (EG & G BERTHOLD) using a dual luciferase reporter system (Promega) kit to confirm the activity of T7 RNA Polymerase.
- LLC-MK2 cells were seeded at 5 ⁇ 10 6 cells / dish in a 100 mm Petri dish, cultured for 24 hours, washed once with serum-free MEM, 3 g / ml psoralen and long-wavelength ultraviolet light (365 nm ) Recombinant vaccinia virus expressing T7 RNA polymerase treated for 5 minutes with
- LLC-MK2 / F7 / A was transflector Ekushi Yon (10 6 cells / well 24- weU- plate), serum and containing that does not contain MEM (40 ⁇ g / ml AraC , a 7.5 mu g / m trypsin) Cultured. On day 7 after the culture, the supernatant was collected and used as a Pl-d7 sample. Furthermore, after infecting the F-expressing LLC-MK2 / F7 cell line (LLC-MK2 / F7 / A) spread on a 12-weU-plate with a supernatant at 37 ° C for 1 hour, the supernatant was washed once with MEM medium and serum.
- LLC-MK2 / F7 cell line LLC-MK2 / F7 / A
- MEM containing 40 ⁇ g / ml AraC, 7.5 g / ml trypsin.
- the supernatant was collected and used as a P4-d7 sample.
- Sendai virus vector recovery method using Sendai virus genome with hammerhead ribozyme attached to pCAGGS (hereinafter referred to as HamRbz method)
- pCAGGS—P4C (—), pCAGGS—L (TDK), and pCAGGS—SeV were dissolved in 0.5 ⁇ g, 0.5 ⁇ , 2 ⁇ , and 2 / z g, respectively.
- the TransIT-LT1 solution and the DNA solution were mixed and allowed to stand at room temperature for 15 minutes.
- the cell culture medium was removed and fresh 10% FBS-containing D-MEM was gently added at 1 ml / well. 15 minutes later, Opti-MEM (GIBCO) 500 1
- LLC-MK2 After culturing under 4 days, discard the culture solution and suspend LLC-MK2 in MEM (tryp-medium) containing trypsin g / ml to 1 ⁇ 10 6 cells / ml / F7 / A cells were overlaid at lml / well and cultured at 37 ° C under 5% CO for 4 days. LLC- MK2 / F7 / A Multi-layer 4 days
- pCAGGS-P4C (-), pCAGGS-L (TDK), pCAGGS-F5R, and pCAGGS-SeV / ⁇ F-GFP were dissolved at 0.3 / z g, 0.5 / z g, 0.5 g, and 0.5-5 g, respectively.
- the Tran sIT-LTl solution and the DNA solution were mixed and allowed to stand at room temperature for 15 minutes. During this time, the cell culture medium was removed and fresh 10% FBS-containing D-MEM was gently added at lml / well.
- Opti-MEM (GIBCO) 500 1 was added to the DNA-TransIT-LTl mixture, and the entire amount was added to the cells and cultured. After culturing at 37 ° C, 5% CO for 72 hours, discard the culture and contain trypsin g / ml
- LLC-MK2 cells were seeded on 12 weU-plates 2-3 days before CIU Atsey. Two days ago, 1.5 ⁇ 10 5 cells / well and 10% FBS in MEM lml / well, 3 days before 8.0 ⁇ 10 4 cells / well and 10% FBS MEM lml / well. After washing once with MEM without serum on the day of CIU assembly, make a 1Z10 dilution series of culture medium collected at 24, 48, 72 hours after overlaying in MEM medium, and infect at 37 ° C for 1 hour After washing once with MEM medium, 1 ml of MEM medium was added.
- the reconstitution efficiency was compared between when the wild-type F gene was used and when F5R was introduced with a forin recognition sequence.
- the day before transfection of 293T cells the cells were seeded on a 6-well plate with D-MEM containing 1 ⁇ 10 6 cells / well / 2 ml 10% FBS. Transfusion was performed as follows. Opti-MEM 30 in 1
- TransIT-LTl (Mirus) was mixed with 151 and incubated at room temperature for 10-15 minutes. During this time, the DNA solution was prepared.
- Try-MEM was added in 1 ml and cultured at 37 ° C, 5% CO. After 48 hours, collect 1 ml of the culture solution.
- pCAGGS-F had the best reconstitution efficiency at 0.7 g, with 0 CIU / ml, 7.9 X 10 2 CIU / ml, 3.3 X 10 at 24 hours, 48 hours, and 72 hours, respectively. It contained 4 CIU / ml virus vectors.
- each cell was seeded on a 6-well plate (293T cells: 1 x 10 6 cells / well / 2 ml D—MEM, LLC—MK2 cells with 10% FBS: 5.0 x 10 5 cells / well / 2 ml D-MEM with 10% FBS, BHK-21 cells: 2.5 X 10 5 cells / well / 2 ml D—MEM with 10% FBS, BHK / T7 cells: 2.5 X 10 5 cells / well / 2 ml D-MEM with 10% FBS).
- Transfusion was performed as follows.
- TransIT-LT1 (Mirus) 15 ⁇ 1 was mixed with Opt-MEM 30 ⁇ 1, and incubated at room temperature for 10-15 minutes.
- the DNA solution was prepared.
- the TransIT-LTl solution and the DNA solution were mixed and allowed to stand at room temperature for 15 minutes. During this time, the cell culture medium was removed and fresh 10% FBS-containing D-MEM was gently added at 1 ml / well.
- Opti-MEM (GIBCO) 5001 was added to the DNA-TransIT-LT1 mixture, and the whole amount was added to the cells and cultured. The cells were cultured at 37 ° C and 5% CO for 3 days. At this time, GFP positive cells
- TransIT-LT1 (Mirus) was mixed with 30 ⁇ 1 of Opti-MEM and incubated at room temperature for 10-15 minutes. During this time, the DNA solution was prepared.
- pCAGGS-NP pCAGGS- P4C (-), pCAGGS- L (TDK), pCAGGS- F5R, pSeV / ⁇ F-GFP (WO00 / 70070) 0.5 ⁇ g, 0.5 ⁇ g, 0.5 ⁇ g, 2 ⁇ g, respectively , 0.5 ⁇ g, 0.5-5 ⁇ g.
- the TransIT-LTl solution and the DNA solution were mixed and allowed to stand at room temperature for 15 minutes. During this time, the cell culture medium was removed and fresh 10% FBS-containing D-MEM was added statically at lml / well. After 15 minutes, Opti-MEM (GIBCO) 500 1 was added to the DNA-TransIT-LT1 mixture, and the entire amount was added to the cells and cultured. After culturing at 37 ° C, 5% CO for 72 hours,
- LLC-MK2 / F7 / A cells suspended in Try-MEM at 1 ⁇ 10 6 cells / ml were overlaid at lml / well and cultured at 37 ° C., 5% CO 2. 24 hours later, 1 ml of culture broth
- the collected Try-MEM was added in 1 ml and cultured at 37 ° C under 5% CO. Culture after 48 hours
- LLC-MK2 cells were seeded on 12 weU-plates 2-3 days before CIU Atsey. Two days ago, 1.5 ⁇ 10 5 cells / well and 10% FBS in MEM lml / well, 3 days before 8.0 ⁇ 10 4 cells / well and 10% FBS MEM lml / well. After washing once with MEM without serum on the day of CIU assembly, make a 1Z10 dilution series of culture medium collected at 24, 48, 72 hours after overlaying in MEM medium, and infect at 37 ° C for 1 hour After washing once with MEM medium, 1 ml of MEM medium was added.
- LLC-MK2 LLC-MK2
- BHK-21 2.5 X 10 5 cells / well
- BHK / T7 2.5 X 10 5 cells / well
- 293T cells lO X 10 6 cells / well.
- Transfusion was performed as follows. 15 ⁇ 1 of TransIT-LTl (Mirus) was mixed with 30 ⁇ 1 of OpttoMEM and incubated at room temperature for 10-15 minutes.
- the DNA solution was prepared.
- Opti-MEM 20 1 with pCAGGS-T7, pCAGGS-NP, pCAGGS- P4C (-), pCAGGS- L (TDK), pCAGGS- F5R, pSeV / ⁇ F-GFP 0.5 ⁇ g, 0.5 ⁇ g, 0.5 g, respectively , 2 g, 0.5 g, 2 g (However, when using BHK / T7 cells, pCAGGS-T7 should be added! /, NA! /,). After 10-15 minutes, the TransIT-LTl solution and DNA solution were mixed and allowed to stand at room temperature for 15 minutes.
- the cell culture medium was removed and fresh 10% FBS-containing D-MEM was gently added at lml / well.
- Opti-MEM (GIBCO) 5001 was added to the DNA-TransIT-LT1 mixture, and the entire amount was added to the cells and cultured.
- Try-MEM was added in 1 ml and cultured at 37 ° C, 5% CO. After 72 hours, collect 1 ml of culture broth
- TransIT-LT1 (Mirus) was mixed with 30 ⁇ 1 of Opti-MEM and incubated at room temperature for 10-15 minutes. During this time, the DNA solution was prepared.
- pCAGGS-P4C (-), pCAGGS-L (TDK), pCAGGS-F5R, and pCAGGS-SeV / ⁇ F-GFP were dissolved in 0.3 ⁇ g, 0.5 g, 2 g, 0.5 g, and 5 g, respectively.
- the TransIT-LT1 solution and the DNA solution were mixed and allowed to stand at room temperature for 15 minutes.
- the cell culture medium was removed, and D-MEM containing 10% FBS was gently added at 1 ml / well. 15 minutes later, Opti-MEM
- the TransIT-LTl solution and DNA solution were mixed and allowed to stand at room temperature for 15 minutes. During this time, the cell culture medium was removed and fresh 10% FBS-containing D-MEM was gently added at lml / well.
- Opti-MEM (GIBCO) 500 1 was added to the DNA-TransIT-LT1 mixture, and the entire amount was added to the cells and cultured. After culturing at 37 ° C, 5% CO for 72 hours, discard the culture solution.
- TransIT-LT1 (Mirus) was mixed with 30 ⁇ 1 of Opti-MEM and incubated at room temperature for 10-15 minutes. During this time, the DNA solution was prepared.
- Opti-MEM 20 1, pCAGGS- NP,
- the TransIT-LTl solution and the DNA solution were mixed and allowed to stand at room temperature for 15 minutes.
- cell culture The ground was removed and fresh 10% FBS-containing D-MEM was gently added at 1 ml / well.
- Opti-MEM (GIBCO) 5001 was added to the DNA-TransIT-LT1 mixture, and the entire amount was added to the cells and cultured. After culturing at 37 ° C, 5% CO for 72 hours, discard the culture and trypsin 7.5
- LLC-MK2 cells that express both M and F genes of Sendai virus suspended in MEM containing g / ml (without serum) (hereinafter Try-MEM) at 1 X 10 6 cells / ml (Hereinafter referred to as LLC-M / F) was overlaid at 1 ml / well and cultured at 37 ° C under 5% CO. After layer 3
- the medium was replaced with fresh Try-MEM every day. After that, it was changed every 2-3 days.
- the culture solution was added to fresh LLC-MK2-M / F cells and cultured for 9 days at 32 ° C and 5% CO (medium was changed every 2-3 days). The supernatant is fresh
- TransIT-LT1 (Mirus) 15 1 was mixed with Opti-MEM 301 and incubated at room temperature for 10-15 minutes. During this time, the DNA solution was prepared.
- the medium was replaced with fresh Try-MEM every day for 3 days after overlaying. After that, every 2-3 days Exchanged.
- the culture solution was added to fresh LLC-M / F cells and cultured for 9 days at 32 ° C. and 5% CO (medium was changed every 2-3 days). The supernatant is fresh
- the cells were added to LLC-M / F cells and cultured in the same manner for 4 days. In addition, the supernatant is fresh.
- FIG. 21 shows the results of observation of the spread of vector-infected cells of cells cultured for one day (P3d3) with GFP fluorescence.
- NP, P, L, F5R, and T7 RNA polymerase under the control of CMV promoter were mounted on pC neo (Promega) (pCl-neo-NP, pCHieo— P4C ( ⁇ ), respectively) , pCHieo— L (TDK), pCHieo— F5R, and
- Opti-MEM 201 can be used with pCAGGS-NP, pCAGGS-P4C (-),
- pCAGGS-L TTK
- pCAGGS-F5R pCAGGS-T7
- pSeV / ⁇ F-GFP pCAGGS-L
- Opti-MEM 20 1 should be connected to pCHieo—NP, pCHieo—P4C (—),
- pCl-neo-L TDK
- pCHieo-F5R pCHieo-T7
- pSeV / ⁇ F-GFP pCl-neo-L
- pCHieo-F5R pCHieo-T7
- pSeV / ⁇ F-GFP pCl-neo-L
- pCHieo-F5R pCHieo-T7
- pSeV / ⁇ F-GFP were dissolved in 0.5 ⁇ g, 0.5 g, 5 g, 0.5 g, 1 g, and 5 g, respectively.
- the method of the present invention can produce a minus-strand RNA virus vector with high efficiency without using a vaccinia virus, and the production process and the safety of the produced preparation are high.
- minus-strand RNA viral vectors lacking envelope protein proteins such as F gene, HN gene, and / or M gene can be produced independently of cocoon virus.
- the method of the present invention is particularly useful as a method for producing a vector requiring high safety such as a vector for gene therapy.
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CN2005800091828A CN1934260B (zh) | 2004-01-22 | 2005-01-20 | 利用含有巨细胞病毒增强子和鸡β-肌动蛋白启动子的杂合启动子制造负链RNA病毒载体的方法 |
CA2553976A CA2553976C (en) | 2004-01-22 | 2005-01-20 | Method for producing minus-strand rna viral vectors using hybrid promoter comprising cytomegalovirus enhancer and chicken .beta.-actin promoter |
AU2005206410A AU2005206410A1 (en) | 2004-01-22 | 2005-01-20 | Method of producing minus strand RNA virus vector with the use of hybrid promoter containing cytomegalovirus enhancer and avian beta-actin promoter |
JP2005517263A JP4999330B2 (ja) | 2004-01-22 | 2005-01-20 | サイトメガロウイルスエンハンサーおよびニワトリβ−アクチンプロモーターを含むハイブリッドプロモーターを利用したマイナス鎖RNAウイルスベクターの製造方法 |
KR1020067016708A KR101279677B1 (ko) | 2004-01-22 | 2005-01-20 | 사이토메갈로바이러스 인핸서 및 닭 β액틴 프로모터를 포함하는 하이브리드 프로모터를 이용한 마이너스 가닥 RNA 바이러스 벡터의 제조방법 |
EP05703933A EP1717317A4 (en) | 2004-01-22 | 2005-01-20 | METHOD OF GENERATING VIRAL NEGATIVE STRAND RNA VECTORS USING A HYBRID PROMOTER COMPRISING THE CYTOMEGALOVIRUS ENHANCER AND THE BETA ACTIN PROMOTER FROM CHICKEN |
US10/586,142 US8741650B2 (en) | 2004-01-22 | 2005-01-20 | Methods for producing minus-strand RNA viral vectors using hybrid promoter comprising cytomegalovirus enhancer and chicken β-actin promoter |
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Also Published As
Publication number | Publication date |
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JP5438149B2 (ja) | 2014-03-12 |
EP2434020A3 (en) | 2012-07-25 |
CN1934260B (zh) | 2013-03-13 |
CA2553976A1 (en) | 2005-08-04 |
EP2434020A2 (en) | 2012-03-28 |
US8741650B2 (en) | 2014-06-03 |
KR20070004636A (ko) | 2007-01-09 |
CN1934260A (zh) | 2007-03-21 |
AU2005206410A1 (en) | 2005-08-04 |
CA2553976C (en) | 2013-09-24 |
EP2434020B1 (en) | 2014-11-05 |
JP4999330B2 (ja) | 2012-08-15 |
KR101279677B1 (ko) | 2013-06-27 |
EP1717317A1 (en) | 2006-11-02 |
US20070161110A1 (en) | 2007-07-12 |
JP2012130346A (ja) | 2012-07-12 |
JPWO2005071092A1 (ja) | 2007-09-06 |
EP1717317A4 (en) | 2009-02-11 |
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