WO1997012973A1 - Cycline i humaine et gene la codant - Google Patents
Cycline i humaine et gene la codant Download PDFInfo
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- WO1997012973A1 WO1997012973A1 PCT/JP1996/002905 JP9602905W WO9712973A1 WO 1997012973 A1 WO1997012973 A1 WO 1997012973A1 JP 9602905 W JP9602905 W JP 9602905W WO 9712973 A1 WO9712973 A1 WO 9712973A1
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- cyclin
- amino acid
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- polypeptide
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- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4738—Cell cycle regulated proteins, e.g. cyclin, CDC, INK-CCR
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- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10S530/827—Proteins from mammals or birds
Definitions
- the present invention relates to a human cyclin I gene, and more particularly to an amino acid sequence of human cyclin I and a polynucleotide encoding the human cyclin I.
- Cyclin is a generic term for polypeptides that are regulatory subunits of cyclin-dependent protein kinase (Cdk), and eight types from A to H have been known so far. Cyclin is known to form a complex with Cdk and exert phosphorylation ability in cells.
- Cdk cyclin-dependent protein kinase
- a common feature of the structure of cyclins is that a part of the amino acid sequence has a region called a cyclin box consisting of about 100 amino acids. Eight types of cyclins known so far are known to have high homology to the amino acid sequence of this cyclin bottus. Therefore, this cycle box is considered to be a necessary step for binding to Cdk and controlling Cdk.
- cyclin's ability to phosphorylate Cdk plays a central role in controlling cell proliferation, and through this is closely related to phenomena such as cancer and immunity. It has also been suggested that some cyclins are widely involved not only in cell cycle control but also in intracellular signal transduction.
- a protein having a high homology with respect to the amino acid sequence of the region called the cyclin box is highly likely to be a cyclin, and in that case, the protein has the ability to bind to Cdk, Has the ability to control oxidases (Experimental Medicine, vol. 13, No. 6 (extra number), 1995). Disclosure of the invention
- Finding and identifying a novel protein having high homology to the amino acid sequence of the cyclin box characteristic of cytaline has been elucidated in order to elucidate the more detailed control mechanism of cyclin-mediated protein kinase (Cdk). Based on the knowledge, it can be used for cell growth control and the like. Furthermore, elucidation of the intracellular variation, localization, activation, etc. of such proteins is necessary for the development of effective therapeutic methods for cancer and immunity, therapeutic or diagnostic methods, diagnostic agents, etc. It is thought to provide effective knowledge.
- One of the objects of the present invention is to find and identify a protein having high homology to the amino acid sequence of the cyclin box, which is characteristic of cyclins. Further, the purpose is to determine the amino acid sequence of the protein and find a gene encoding the protein.
- Another object of the present invention is to provide an expression vector incorporating the above gene, a transformed cell into which the expression vector has been introduced, and a recombinant protein obtained by culturing the transformed cell.
- Another object of the present invention is to provide a novel neuron marker based on the protein.
- the present invention provides a method for discriminating cancer cells using the protein gene.
- FIG. 1 shows the nucleotide sequence of the human cyclin I gene and the corresponding amino acid sequence of the cyclin I protein.
- Figure 2 shows a comparison of the amino acid sequences of human 'cyclin I with other members of the cyclin family
- Figure 2A shows a comparison of the cyclin box (black box).
- 2B shows the comparison between human cyclin I and rat cyclin G (underlined cyclin box).
- FIG. 3 is a photograph showing the localization of human cyclin I mRNA to neurons by in situ hybridization of rat brain slices using an antisense cDNA probe.
- 3B uses cyclin I antisense cRNA as a probe.
- a black portion indicates a portion where neurons are concentrated. Hippocampus
- CA1, CA3, DG viramidal cells and granule cells (both neurons) are particularly strongly stained.
- DG dentate gyrus
- CA3 Ca jail's area 3
- CTX front al cortex
- CA1 CerajaiT s area 1
- CP choroid plexus
- FIG. 4 shows the detection of cyclin I protein by anti-cyclin I antibody (at 1, 3, 7, 9, 12, 15, 21, and 30 days after birth (each described as N 1 to N 30) and adult ( Three months later, described as Ad)) Shows the analysis by Western blotting.
- the band at the position of 43 kDa corresponds to the cyclin I protein having the amino acid sequence described in SEQ ID NO: 1 in the sequence listing.
- FIG. 5 shows the increase in cyclin I mRNA in colorectal cancer.
- C the painful part
- N the normal part
- the present inventors have conducted intensive studies to achieve the above-mentioned object, and as a result, have searched in detail for a gene encoding a protein in human brain cells and found that the gene has high similarity to a known cyclin box amino acid sequence.
- this gene was named human cyclin I gene, and the protein encoded by this gene was Hit'Sike Phosphorus I).
- the isolated human cyclin I gene is inserted into an expression vector, and the expression vector is introduced into Escherichia coli cells.
- Anti-human cyclin I serum was successfully prepared against antigens based on all or part of the I protein.
- the present invention relates to a polypeptide capable of forming a complex with a kinase and controlling the activity of the kinase, comprising at least the amino acid sequence of SEQ ID NO: 1 in the molecule. To provide a polypeptide containing all or a part of the above.
- the present invention provides a polypeptide comprising at least the amino acid sequence of SEQ ID NO: 1 in the molecule.
- the present invention also relates to a polypeptide capable of forming a complex with a kinase and controlling the kinase activity, wherein all or a part of the amino acid sequence described in SEQ ID NO: 1 in the sequence listing is mutated. Or a polypeptide comprising at least a mutated amino acid sequence in the molecule, or a polypeptide comprising at least the amino acid sequence of SEQ ID NO: 1 in the molecule.
- the present invention also provides a sense polynucleotide encoding at least a part of the polypeptide consisting of the amino acid sequence shown in SEQ ID NO: 1 in the sequence listing. Further, the present invention provides a sense polynucleotide encoding the following polypeptide which forms a complex with a kinase and can control the kinase activity.
- polypeptide comprising at least all or a part of the amino acid sequence described in SEQ ID NO: 1 in the molecule; (2) a polypeptide comprising at least the amino acid sequence described in SEQ ID NO: 1 in the molecule (3) described in SEQ ID NO: 1 in the sequence listing A polypeptide comprising, in a molecule, at least all or a part of the amino acid sequence described above mutated or mutated.
- the present invention also provides an antisense polynucleotide of a sense polynucleotide encoding at least a part of the polypeptide having the amino acid sequence shown in SEQ ID NO: 1 in the sequence listing.
- the present invention relates to an antisense polynucleotide of a sense polynucleotide encoding at least a part of the polypeptide having the amino acid sequence set forth in SEQ ID NO: 1 in the sequence listing, wherein the antisense polynucleotide forms a complex with a kinase. It is intended to provide a polynucleotide capable of controlling the biosynthesis of the following polypeptide capable of controlling the kinase activity.
- polypeptide comprising at least all or a part of the amino acid sequence of SEQ ID NO: 1 in the molecule; (2) an amino acid of at least SEQ ID NO: 1 in the molecule; A polypeptide comprising a sequence, (3) a polypeptide having at least all or part of the amino acid sequence shown in SEQ ID NO: 1 in the sequence listing mutated or mutated in the molecule.
- the present invention provides a sense polynucleotide encoding at least a part of the polypeptide having the amino acid sequence set forth in SEQ ID NO: 1 of the sequence listing, and a double-stranded polynucleotide comprising an antisense polynucleotide of the sense polynucleotide. Is provided.
- the present invention provides a method of labeling an mRNA present in a neuron, which comprises a region encoding a polypeptide consisting of an amino acid sequence represented by SEQ ID NO: 1 in the sequence listing, with the mRNA so as to be hybridizable therewith. It is intended to provide a method for detecting neurons by detecting using nucleotides.
- the present invention relates to the above (1), (2), and (3), which form a complex with the polypeptide of SEQ ID NO: 1 in the sequence listing and a phosphorylase and can control the phosphorylase activity. ), Which provides an antibody that uses all or a part of the polypeptide shown in SEQ ID NO: 1 in the sequence listing as an antigen. Further, the present invention provides a sense polynucleotide encoding the polypeptide of (1), (2), or (3), which forms a complex with a kinase and controls the kinase activity, and an antisense thereof. It is intended to provide a recombinant plasmid containing a double-stranded polynucleotide comprising a polynucleotide.
- the present invention also provides a recombinant microbial cell transformed with the plasmid.
- the present invention provides a method for discriminating cancer cells using the cyclin I gene according to the present invention.
- the cell type from which it is derived is not particularly limited, and may be skeletal muscle cells, cultured fibroblasts, etc. In particular, cells derived from human cerebrum are preferably used.
- cyclin I in order to identify human cyclin I, it is possible to utilize various chemical structural or biochemical properties generally known as cytaline and use them as a search force.
- the property that cyclin binds to a specific cdk can be used as a marker, for example, by an in vitro binding method (Shichigo Matsu, Cell Engineering, 13, 528-533, 1). 994).
- the property of complementing yeast mutants deficient in cyclin cell cycle progression can be used as a marker in a method of gene complementation screening by, for example, gene transfer ( Lew et al., Cel l, 6, 11
- cyclin has a chemical structure in common and is considered to play an important role also in biochemistry. It is preferable to use whether or not an amino acid sequence having high homology with the present amino acid sequence is included. Further, a method for determining whether the amino acid sequence has a cyclin box-like amino acid sequence Various methods (for example, determination of a significant difference by calculating homology with the amino acid sequence) based on a known technique for comparison with cyclin can be used, and there is no particular limitation in the present invention.
- the form of the sample for the above search is not particularly limited, and a polypeptide having the above properties can be directly or indirectly applied by utilizing the above properties. (Eg, by screening expression libraries using antibodies against known cyclin boxes)
- a method of searching for and identifying a gene encoding the amino acid from an appropriate cDNA library for example, a random sampling method
- cDNA libraries available from various commercial products and the like can be preferably used.
- the above human cerebral cDNA library can be particularly preferably used.
- a homogenized cDNA library can be suitably used. This is obtained, for example, by the method of Sasaki et al. (DNA Research 1, 91-96, 1994), in which the abundance of each cDNA is homogenized.
- the present invention there is no particular limitation as to how much of the homogenized human brain cDNA library obtained above is cloned. It is possible to select a part of the library by a suitable sampling method, for example, random sampling. In the present invention, for example once, it is preferable to screen the lxlO 3 ⁇ 5xl0 3 or so. Furthermore, there is no particular limitation on the method of obtaining a plasmid at the time of screening, and there are no particular restrictions on the usual known methods (eg, Cell Engineering Experiment Protocol, edited by Yamamoto et al., Shujunsha,
- a method in which the insert is excised by digestion with a restriction enzyme and then inserted into a plasmid vector by ligase, or an in vivo excision method using a helper phage can be used.
- it is particularly preferable to convert to a plasmid in accordance with an in vivo excision method using a helper phage (method described in Uni-ZAP XR Cloning Kit Instruction manual of Stratagene).
- the gene encoding the cyclin box-like amino acid sequence can be selected.However, whether or not to analyze a part or all of the insert is determined. There is no particular limitation in the present invention. In the present invention, it is also possible to determine a base sequence having an appropriate length and select a further appropriate plasmid based on the result. That is, in the present invention, several nucleotide sequences at the 5 'end of the insert are determined, the amino acid sequence encoded from the determined nucleotide sequence is predicted, and further plasmids are selected based on the results. Is preferred. In this case, the insert at the 5 'end is preferably analyzed for at least 200 bases or more. This is because using such a number of sequences makes it possible to sufficiently determine the homology with the cyclin box.
- the method for determining the base sequence at the 5 'end of the selected brassmid is not particularly limited in the present invention, and is a known method. Can be used. For example, a method based on the Taq cycle sequencing method (Biotechniques, 7, 494-499, 1989) can be particularly preferably used.
- the method of comparison with the known cyclin protein based on the obtained amino acid sequence based on the nucleotide sequence is not particularly limited, but may be determined by a usual method.
- Homology analysis is possible.
- homology analysis can be performed using a commercially available program (eg, GE ETY program (Ver. 27, Software Development Co)) and a protein database (eg, protein database (NBRF, Release 43)). .
- a protein database eg, protein database (NBRF, Release 43)
- a clone containing the entire region encoding the protein In order to analyze the plasmid selected by the above method in more detail, it is preferable to prepare a clone containing the entire region encoding the protein.
- the method of screening for that purpose, but in the present invention, it is particularly preferable to use the base sequence information of the 5 ′ end obtained above. For this reason, there is no particular limitation on whether to use all or a part of the nucleotide sequence, as long as it can be screened using this nucleotide sequence. For example, it is preferable to use a base sequence of about half of the base sequence obtained above, but it also depends on the screening method used.
- a hybridization method using a labeled oligonucleotide a RACE method using primers in 5, or 3 directions can be particularly preferably used.
- the labeling is not particularly limited for, for example, [ ⁇ - 3 2 P] d CPT, Jigokishige Nin and the like are suitably used.
- hybridization conditions and the like are not particularly limited in the present invention, and various conventionally known conditions can be suitably used (for example, Cell Engineering Experiment Protocol, edited by Yamamoto et al., Shujunsha, etc.). , 1991, 57-65 ⁇ .
- the method for determining the nucleotide sequence of the insert from the screened positive clone is not particularly limited in the present invention. It is possible by various methods. For example, it is possible to prepare a deletion mutant, determine the base sequence of each clone, and ligate the clones.
- a sequence primer is prepared sequentially from the portion where the amino acid sequence is determined. There are reading methods.
- the determined base sequence of the polynucleotide encoding the human cyclin I polypeptide is represented by SEQ ID NO: 2 in the sequence listing.
- the polynucleotide according to the present invention includes a polynucleotide consisting of a base sequence in which ATG is not bound to the 5 ′ end of the sequence represented by SEQ ID NO: 2 in the sequence listing.
- the polynucleotides of the present invention also include DNAs, including 5 'flanking polynucleotides.
- the structure of the polynucleotide and a part of the structure of the polypeptide to be played from it can be changed without altering the main activity (phosphorylation activity etc.) by natural mutation or artificial mutation. It is possible to mutate.
- the polynucleotide according to the present invention can also contain a nucleotide sequence encoding a polypeptide having a structure corresponding to the homologous isomer of all the above-mentioned polypeptides.
- the polynucleotide of the present invention can also contain a base sequence that has been converted by substitution based on the degeneracy of the transmitted message.
- the amino acid sequence to be deducted from the base sequence obtained by the above substitution matches the amino acid sequence described in SEQ ID NO: 1 in the sequence listing defined above.
- amino acid sequence of the human cyclin I polypeptide deduced from the polynucleotide encoding the human cyclin I polypeptide whose nucleotide sequence was determined by the method described above is the sequence shown in the sequence listing. Represented by the number 1.
- the amino acid sequence according to the present invention also includes a polypeptide in which methionine is not bound to the N-terminal of the above amino acid sequence.
- changes in the main activity of the polypeptide may be caused by natural mutation or by artificial mutation (eg, Molecular Cloning, A Laboratory manual, 2nd ed., Cold Spring Harbor Laboratory Press, 15.1-15. 113, 1989). Without giving, it is possible to change a part of the structure of the polynucleotide encoding the polypeptide, and the polypeptide of human 'cyclin I according to the present invention has the amino acid sequence described above. And a polypeptide having a structure corresponding to the homologous mutant.
- the amino acid sequence translated from the determined nucleotide sequence shows a significant homology with one of the members of the cyclin family known in cyclin bottus, as shown in FIG.
- rat cyclin G Tropura et al., Oncogene, 8, 2113-2118, 1993
- human cyclin E has a homology of 36%.
- the known cyclins are called A to H in the order in which they were identified, this new clone is called cyclin I.
- cyclin I identified in the present invention shows significant homology with other members of the cyclin family in the region of the cyclin 'box.
- the cyclin I protein identified in the present invention is capable of binding to a specific member of the kinase cdk by its cyclin box, It can be expected that there is a function to activate. Furthermore, it is possible to find a means for effectively inhibiting the synthesis of human cyclin I protein by a conventionally known technique such as antisense. Yes, it will be possible to provide a therapeutic means for diseases in which the above-mentioned kinase plays an important role.
- the primer to be used is not particularly limited, but in the present invention, the following primer having the nucleotide sequence of SEQ ID NO: 3 or 4 in the sequence listing, (ORF-s) CGTTCCCGGGTATGAAGTTTCCAGGGCCTTTGG
- Amplification can be performed under known conditions (for example, using a DNA thermal cycler manufactured by PerkinElmer (Citus)) to obtain a protein-encoding region.
- This PCR fragment can be inserted into an ECoRI site of an appropriate plasmid such as pCRII plasmid by a known method (for example, using a TA Cloning kit (Invitrogen) and following the attached instructions). It is.
- a PCR fragment consisting only of the region encoding the cyclin I protein described above It can be inserted into a vector (for example, inserted between the Smal site of pGEX-4T-l vector (Pharmacia) and the Xhol site), and E. coli containing the obtained plasmid can be inserted under normal conditions. And induced the expression of recombinant cyclin I protein (in this case, supplied as a composite protein with GST protein) (for example, using IPTG (Siraa)). It is possible to recover the I protein.
- This method can be performed according to a conventionally known method, for example, the method described in the instruction manual for PGEX-4T-1 vector-1 (Pharmacia). This makes it possible to prepare a large amount of the cyclin I protein.
- the present inventors have studied which brain cells contain a large amount of the cyclin I protein according to the present invention, and have found that they are mainly localized in neurons. Based on this finding, a method for specifically detecting neurons using the present cyclin I protein and cyclin I gene was discovered. One embodiment of the implementation will be described below.
- a brain section having an appropriate thickness as a sample is prepared using a cryostat (Hacker Instruments) and placed on a gelatin-coated slide glass.
- the section is subjected to an appropriate treatment (for example, postfix, acetylation, dehydration) according to the method of Himi et al. (Neuroscience, 60, 907-926, 1994), and Hybridization is performed with a probe labeled with a labeling reagent (eg, with digoxigenin).
- an appropriate treatment for example, postfix, acetylation, dehydration
- the cyclin I antisense probe is obtained by digesting the plasmid containing cyclin I cDNA with an appropriate restriction enzyme that cuts only the 5 'of the cDNA, opening the ring, and then presenting digoxige nin-labeled UTP (Boehringer). It is prepared below by performing in vitro transcription with T3 RNA polymerase (Biolabs). Furthermore, an antisense probe of SCG 10 is prepared in the same manner as a positive control for neuroma (eg, according to the method described in Hirai et al. (Neuroscience, 60, 907-926, 1994). ). (3) In situ hybridization, RN Ase treatment, and washing can be performed according to known methods, for example, the method of Himi et al. (Neuroscience, 60, 907-926, 1994). Thereafter, the sections were treated with a blocking reagent (manufactured by DIFC0), and then treated with anti-digingen in ⁇ alkaline phosphatase.
- NBT nitroblue tetrazoliura salt
- FIG. 3A shows the results obtained by using the SCG10 antisense probe.
- Figure 3B shows the use of the cyclin I gene using a rat brain slice adjacent to this. In Figure 3A and Figure 3B exactly the same location gives a clear signal, where the neurons are localized.
- nucleotide sequence complementary to the entire or partial sequence of the cyclin I gene is useful as a neuron marker, for example, to find the location of neurons in brain slices in research or clinical settings. it can.
- Antibodies were prepared using-part or all of the polypeptide consisting of the amino acid set forth in SEQ ID NO: 1 of the sequence listing, or purified cyclin I protein, using the Antibodies A Laboratory Manual J (Cold Spring Harbor Laboratory Press). , 1988) For example, it is possible to immunize a heron to obtain an anti-blood bacterium by known means, and as shown in the results of Example 6, It is well known that monoclonal antibodies are produced by hybridomas using the lymphocytes of the immunized animal if a polyclonal antibody having a sufficient antibody titer can be obtained by the production. Include monoclonal antibodies against the cyclin I protein.
- cyclin I protein can be identified and detected by Western blotting. That is, a sample containing cyclin I protein was By running the gel on a midgel and reacting with the above antibody, a band corresponding to the cyclin I protein can be detected at the position of 43 kDa (corresponding to the polypeptide of K column number 1 in the sequence listing).
- This method can be carried out according to a conventionally known method, for example, the method described in Chapter 12 of "Antibodies A Laboratory Manual J (Cold Spring Harbor Laboratory Press, 1988)".
- the present inventors have found that a probe derived from the cyclin I gene transfer gene can be used for the purpose of judging that cells in a quiescent state have shifted to a cultured state in colon tissue or the like.
- RNA was extracted from the normal portion adjacent, cyclin I Yadenko that label in a suitable manner (e.g., radiolabeled with 3 2 P)
- a suitable manner e.g., radiolabeled with 3 2 P
- Perform analysis by the Northern blot method using the nucleic acid sequence of the origin as a probe (Northern blot method can be performed, for example, according to the method described in Cell Engineering Laboratory Protocol, pp. 1491-1151 (Shujunsha)) .
- a nucleotide sequence complementary to the entire or partial nucleotide sequence of the cyclin I gene can be used for the purpose of judging that a cell in a quiescent state has shifted to a cultured state.
- it can be used as a cancer marker (eg, colorectal cancer) in research or clinical settings.
- Antisense nucleotides for use in the present invention for controlling or inhibiting cyclin I protein biosynthesis can be selected by known means.
- the desired structure can be obtained by a chemical synthesis method (for example, Takezaki et al., Experimental Medicine, 12, 1657-1663, 1994).
- an appropriate expression vector eg, DCMVI
- the antisense strand can be supplied by a method of expressing it in a cell (for example, according to the method described in Kobayashi, et. Al., Antisense Research and Development, 5, 141-148, 1995).
- the usable sequence may be an antisense strand of a polynucleotide having all or a part of the nucleotide sequence shown in SEQ ID NO: 2 in the sequence listing, and may be a polynucleotide that inhibits biosynthesis of the following polypeptides: I just need. That is, a polypeptide that forms a complex with a kinase and controls the kinase activity, and (1) has at least the amino acid sequence of SEQ ID NO: 1 in the molecule.
- administration or introduction into cells can be carried out in the case of oligonucleotides according to, for example, the method of Takeuchi et al. (Experimental Medicine, 12, 1657-1663, 1994), and in the case of using an expression vector. Is possible according to the method of Kobayashi et al. (Antisense Research and Development, 5, 141-148, 1995).
- cyclin I protein biosynthesis in cells By controlling and inhibiting cyclin I protein biosynthesis in cells by the above method, (i) it can be used as an effective reagent or method for analyzing the physiological effects of cyclin I on cells. And (ii) it can be used as an effective reagent or method for examining the effects of excess cyclin I on cells, tissues, and living organisms due to the presence of cyclin I in excess, thereby eliminating or mitigating adverse effects and the like. Application to therapeutic drugs is possible.
- a homogenized cDNA library was prepared using mRNA from human cerebrum. For homogenization, according to the method of Sasaki et al. (DNA Research 1, 91-96, 1994), (i) self-hybridization in a semi-solid system, (ii) mRNA treated with (i) And (iii) the steps of converting the insert cDNA to cDNA, in the order of (i)-(ii)-(iii)-(i)-(ii). A homogenized cDNA library was created.
- Escherichia coli XL-lBlue200 1 and homogenizing c DNA library one 1 00 / X 1, helper phage R408 1 ⁇ 1 (> 1 ⁇ 10 6 pfu / ml) were mixed in 5 Om 1 tube 37, In 15 minutes, ZAP and helper phage were infected.
- 2xYT medium (10 g NaCl, 10 g Bacto Yeast Extract, 16 g Bactotryptone / ll) was added, followed by shaking at 37 for 3 hours to allow phagemid to be secreted from E. coli.
- the cells were centrifuged at 4000 g for 5 minutes to kill the cells.
- the supernatant phagemid was transferred to another tube.
- the 1 0 Omm square plates were incubated approximately 50,000 plaques, plated on six plates, with approximately 3x10 s I number of plaques for screening.
- the NZY plate was cooled with for 2 hours, and a nylon filter (Amersham, High Bond N +) was placed on the blade and left for 2 minutes.
- 5xSSC NaCl 0.15M, sodium citrate (pH7.0) 0.015M
- 50% sodium lumamide ⁇ Serum albumin (Fraction V) 0.23 ⁇ 4, Polyvier pyrrolidone 0.2 0, Ficoll 400 0.2%) solution
- 0.1% SDS 100 ⁇ g / m 1 salmon spam DNA were used.
- the filter was incubated with a prehybridization solution for 4 2 ⁇ , 3 hours, followed by a hybridization solution containing a labeled probe (prehybridization solution containing 10% dextran sulfate). The solution was incubated for 42 and 16 hours.
- the appearing colony is an E. coli (XL-1 Blue) transformant having double-stranded pBluescriptS K (-) containing the insert DNA.
- Plasmids were prepared from three positive clones of E. coli using the QIAprepPlasmid kit (Qiagen), and the DNA sequence of the clone with the longest insert (about 1.7 kb insert) was determined as follows. Was.
- FIG. 1 shows 1328 bases among the results of the nucleotide sequence analysis of the obtained human cyclin I cDNA.
- the oven reading frame is 1134 bases and contains 377 amino acids. Analysis of the amino acid sequence encoded by the human cyclin I gene
- the amino acid sequence translated from the determined nucleotide sequence shows a significant homology with the members of the cyclin family known in cyclin bottus as shown in FIG.
- rat cyclin G (Taraura et al., Oncogene, 8, 2113-2118, 1993) shows a homology of 41%
- human cyclin E shows a homology of 36%. Since the known cyclins are called A to H in the order in which they were identified, this new clone is called cyclin I.
- cyclin I identified in the present invention shows significant homology with other cyclin family members in the cyclin 'box region.
- the primer concentration was 20 praolZ / iI
- the Taq DNA polymerase was 0.025 ⁇ l / ⁇ 1 for 3 cycles
- amplified using PerkinElmer (Cetus) DNA Thermal Cycler to define the protein-coding region. Obtained.
- This PCR fragment was inserted into the ECoRI site of pCRII plasmid using a TA Cloning kit (Invitrogen) according to the attached instructions.
- the transformed Escherichia coli containing the plasmid pCRII-cyclin I obtained by the above method was named pCRII-cyclinl, and on September 8, 1995, 1-3 1-3 Higashi, Tsukuba, Ibaraki, Japan Ministry of International Trade and Industry Deposited with the Research Institute of Biotechnology, Industrial Technology Institute (Accession number: FE RM P—15 16 6).
- a 13-micron-thick adult male rat (Sprague-Dawley; 3 months old) brain section was prepared using a cryostat (Hacker Instruments) and placed on a gelatin-coated slide glass.
- the cyclin I antisense probe cuts the above plasmid with Xhol and opens the ring. After that, it was obtained by performing in vitro transcription with T3 RNA polymerase (Biolabs) in the presence of digoxigenin-labeled UTP (Boehringer). An antisense probe for SCG10 was obtained in the same manner as a positive control for a neuronal marker (Neuroscience, 60, 907-926, 1994).
- FIG. 3A shows the results using the SCG10 antisense probe.
- Figure 3B shows the use of the cyclin I gene using a rat brain slice adjacent to this.
- Figure 3B and Figure 3A exactly the same location gives a clear signal, where two euros are localized. Therefore, a nucleotide sequence complementary to the entire or partial nucleotide sequence of the cyclin I gene is useful as a neuron marker, and can be used, for example, in research or clinical settings to determine the location of neurons in brain slices. .
- the antibody was prepared using the recombinant cyclin I protein prepared in Example 4 according to the method described in Chapter 5 of the Antibodies A Laboratory Manual (Old Spring Harbor LAboratory Press, 1988). This was used for immunization of rats to obtain antisera.
- Antibodies were prepared as follows according to the method described in Chapter 5 of Antibodies A Laboratory Manual J (Cold Spring Harbor LAboratory Press, 1988).
- a peptide consisting of an amino acid sequence was synthesized and conjugated to the carrier protein KLH (Keyhole Limpet Hemocyanin) by the MCS (Hetero-Tachibana Reagent) method, and then immunized twice with a heron at 2 week intervals.
- the antibody titer increased 10,000 times or more after 5 weeks and 6 weeks after the first immunization.At that time, a large amount of anti-blood was collected, and a part thereof was used in the experiment of Example 7.
- cyclin I protein by anti-cyclin I antibody
- the cell extract was run on an acrylamide gel, and analyzed by Western blotting using the anti-blood plasma prepared in Example 6, and the position of 43 kDa was set forth in SEQ ID NO: 1 in the sequence listing.
- a band corresponding to the cyclin I protein having the above amino acid sequence was detected (Fig. 4).
- Analysis by Western blotting was carried out according to the method described in Chapter 12 of the rAntibodies A Laboratory Manual (Cold Spring Harbor LAboratory Press, 1988).
- RNA was extracted from the cancerous part and the normal part adjacent to it, and the part corresponding to the 55th to 595th positions of SEQ ID NO: 2 in the sequence listing was used as a probe to determine the Northern blot method. Analysis confirmed that cyclin I mRNA was induced in the cancerous site (Fig. 5). The analysis by the Northern blot method was performed according to the method described in Cell Engineering Experiment Protocol, pp. 1491-1151 (Shujunsha).
- Asp Glu Val lie Gin Trp Leu Ala Lys Leu Lys Tyr Gin Phe Asn
- Ala lie Ser Cys Phe Phe Leu Ala Ala Lys Thr Val Glu Glu Asp
- Glu Arg lie Pro Val Leu Lys Val Leu Ala Arg Asp Ser Phe Cys
- Sequence type nucleic acid
- Sequence type nucleic acid
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69634044T DE69634044T2 (de) | 1995-10-05 | 1996-10-07 | Menschliches Cyclin I und das dafür codierende Gen |
EP96932828A EP0863204B1 (en) | 1995-10-05 | 1996-10-07 | Human cyclin i and gene encoding the same |
US09/054,492 US6218115B1 (en) | 1995-10-05 | 1998-04-03 | Human cyclin I and genes encoding same |
US09/736,250 US7001985B2 (en) | 1995-10-05 | 2000-12-15 | Human cyclin I and genes encoding same |
Applications Claiming Priority (2)
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JP7/284663 | 1995-10-05 | ||
JP28466395 | 1995-10-05 |
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US09/054,492 Continuation-In-Part US6218115B1 (en) | 1995-10-05 | 1998-04-03 | Human cyclin I and genes encoding same |
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WO1997012973A1 true WO1997012973A1 (fr) | 1997-04-10 |
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PCT/JP1996/002905 WO1997012973A1 (fr) | 1995-10-05 | 1996-10-07 | Cycline i humaine et gene la codant |
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US (2) | US6218115B1 (ja) |
EP (1) | EP0863204B1 (ja) |
DE (1) | DE69634044T2 (ja) |
WO (1) | WO1997012973A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1999025829A3 (en) * | 1997-11-13 | 1999-09-10 | Curagen Corp | Cdk2 protein and cdk2 protein complexes |
WO2002012300A1 (fr) * | 2000-06-14 | 2002-02-14 | Biowindow Gene Development Inc. Shanghai | Nouveau polypeptide, proteine humaine g29.13 du cycle cellulaire, et polynucleotide codant ce polypeptide |
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US20030125274A1 (en) * | 2001-11-08 | 2003-07-03 | Isis Pharmaceuticals Inc. | Antisense modulation of human collapsin response mediator protein 2 expression |
US20030144943A1 (en) * | 2002-01-28 | 2003-07-31 | George Zivan | Business method for defferring the payment of a broker's commission or fee |
CN113444158B (zh) * | 2020-03-27 | 2022-11-18 | 中国科学院微生物研究所 | B-型细胞周期蛋白Cbc1及其编码基因在新生隐球菌致病性中的重要作用 |
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US5798257A (en) * | 1990-07-09 | 1998-08-25 | Research Corporation Technologies, Inc. | Nucleic acid encoding human MTS-1 protein |
JPH05255393A (ja) * | 1990-09-21 | 1993-10-05 | Ishihara Sangyo Kaisha Ltd | ポリペプチド |
WO1994009135A1 (en) * | 1992-10-16 | 1994-04-28 | Cold Spring Harbor Laboratory | Cyclin complex rearrangement and uses related thereto |
AU3359195A (en) | 1994-07-15 | 1996-02-16 | Worldwide Notification Systems, Inc. | Satellite based aircraft traffic control system |
-
1996
- 1996-10-07 DE DE69634044T patent/DE69634044T2/de not_active Expired - Fee Related
- 1996-10-07 EP EP96932828A patent/EP0863204B1/en not_active Expired - Lifetime
- 1996-10-07 WO PCT/JP1996/002905 patent/WO1997012973A1/ja active IP Right Grant
-
1998
- 1998-04-03 US US09/054,492 patent/US6218115B1/en not_active Expired - Fee Related
-
2000
- 2000-12-15 US US09/736,250 patent/US7001985B2/en not_active Expired - Fee Related
Non-Patent Citations (4)
Title |
---|
CELL (1989), Vol. 58, P. JONATHON et al., "Isolation of a Human Cyclin CDNA: Evidence for Cyclin mRNA and Protein Regulation in the Cell Cycle and for Interaction with p34cdc2", pages 833-846. * |
CELL, (1994), Vol. 78, P.F. ROBERT et al., "A Novel Cyclin Associates with M015/CDK7 to Form the CDK-Activating Kinase", pages 713-724. * |
EXP. CELL. RES. (1995, Dec.) Vol. 221, No. 2, T. NAKAMURA et al., "Cyclin I: A New Cyclin Encoded by a Gene Isolated from Human Brain", pages 534-542. * |
See also references of EP0863204A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999025829A3 (en) * | 1997-11-13 | 1999-09-10 | Curagen Corp | Cdk2 protein and cdk2 protein complexes |
US5986055A (en) * | 1997-11-13 | 1999-11-16 | Curagen Corporation | CDK2 interactions |
US6521412B1 (en) | 1997-11-13 | 2003-02-18 | Curagen Corporation | HsReq*1 and hsReq*2proteins and use thereof to detect CDK2 |
WO2002012300A1 (fr) * | 2000-06-14 | 2002-02-14 | Biowindow Gene Development Inc. Shanghai | Nouveau polypeptide, proteine humaine g29.13 du cycle cellulaire, et polynucleotide codant ce polypeptide |
Also Published As
Publication number | Publication date |
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US6218115B1 (en) | 2001-04-17 |
EP0863204B1 (en) | 2004-12-15 |
EP0863204A4 (en) | 2000-01-19 |
DE69634044T2 (de) | 2005-12-08 |
US7001985B2 (en) | 2006-02-21 |
US20050014139A1 (en) | 2005-01-20 |
DE69634044D1 (de) | 2005-01-20 |
EP0863204A1 (en) | 1998-09-09 |
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