WO1996030527A1 - Proteines mutees, codees par un gene env mute de lentivirus, fragments peptidiques et vecteurs d'expression - Google Patents
Proteines mutees, codees par un gene env mute de lentivirus, fragments peptidiques et vecteurs d'expression Download PDFInfo
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- WO1996030527A1 WO1996030527A1 PCT/FR1996/000449 FR9600449W WO9630527A1 WO 1996030527 A1 WO1996030527 A1 WO 1996030527A1 FR 9600449 W FR9600449 W FR 9600449W WO 9630527 A1 WO9630527 A1 WO 9630527A1
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- seq
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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
- C07K14/005—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from viruses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/02—Immunomodulators
- A61P37/04—Immunostimulants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2740/00—Reverse transcribing RNA viruses
- C12N2740/00011—Details
- C12N2740/10011—Retroviridae
- C12N2740/15011—Lentivirus, not HIV, e.g. FIV, SIV
- C12N2740/15022—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2740/00—Reverse transcribing RNA viruses
- C12N2740/00011—Details
- C12N2740/10011—Retroviridae
- C12N2740/15011—Lentivirus, not HIV, e.g. FIV, SIV
- C12N2740/15041—Use of virus, viral particle or viral elements as a vector
- C12N2740/15043—Use of virus, viral particle or viral elements as a vector viral genome or elements thereof as genetic vector
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2740/00—Reverse transcribing RNA viruses
- C12N2740/00011—Details
- C12N2740/10011—Retroviridae
- C12N2740/16011—Human Immunodeficiency Virus, HIV
- C12N2740/16111—Human Immunodeficiency Virus, HIV concerning HIV env
- C12N2740/16122—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes
Definitions
- the present invention relates to mutated proteins, encoded by a mutated env gene of lentivirus, and in particular VTF, HIV or CAEV, to peptide fragments included in said mutated proteins, to expression vectors expressing said mutated proteins as well as their applications.
- Feline immunodeficiency is caused by a lentivirus, the feline immunodeficiency virus (FIV), which has a genetic structure similar to that of primate lentiviruses (HIV and VIS).
- FV feline immunodeficiency virus
- TM1 a fragment including a segment of 51 amino acids, which corresponds to positions 595-647 of the Env protein of VIF
- TM2 a fragment including a segment of 31 amino acids, called TM2, which corresponds to positions 681-711 of the Env protein of VIF, which fragment contains an epitope including the sequence: Cys 697 -Asn-Gln-Asn-Gln-Phe -Phe-Cys- Lys 705 (peptide called P237),
- TM3 a fragment including a segment of 45 amino acids, called TM3
- TM3 a fragment including a segment of 45 amino acids, called TM3
- TM3 a fragment including a segment of 29 amino acids
- TM4 which corresponds to positions 826-854 of the Env protein of VIF.
- a complete and mature envelope protein in its oligomeric form, is preferable for inducing the formation of antibodies directed against confon ⁇ national epitopes, among which neutralizing antibodies (CC BRODER et al., Proc. Natl. Acad. Sci. USA, 1994, 91, 11699-1 1703).
- HIV-1 the Principal Immunodominant Domain (PID) of the envelope of the human immunodeficiency virus type 1 (HIV-1) is very conserved among the various viral isolates of VJ ⁇ -1.
- the sequence between the two DIP cysteines is also conserved among the HIV-1 subtypes, except for the subtype 0 (Outsider), which could correspond to a new type of HTV-1.
- the HIV-1 DIP sequence is completely different from that of HIV-2, which is identical to that of the simian immunodeficiency virus (SIV), to which HTV-2 is phylogenetically related.
- the DP of lentiviruses can cause the formation of antibodies facilitating viral infection, the action of which has a deleterious effect and is contrary to - j that of the protective antibodies generated by vaccination with the Env protein, as specified above, for the VIF envelope protein.
- the Applicant has set itself the goal of providing Env proteins mutated at the level of said principal immunodominant domain (PID) of the transmembrane glycoprotein of lentiviruses and in particular of the feline immunodeficiency virus or of the human immunodeficiency virus.
- PID principal immunodominant domain
- the Applicant has set itself the goal of providing Env proteins mutated at the level of said principal immunodominant domain (PID) of the transmembrane glycoprotein of lentiviruses and in particular of the feline immunodeficiency virus or of the human immunodeficiency virus.
- PID principal immunodominant domain
- the present invention therefore relates to peptide fragments, characterized in that they constitute mutants of the wild primary immunodominant domain (PID) of a wild transmembrane protein (TM) of lentivirus and in particular of the immunodeficiency virus feline (VIF), human immunodeficiency virus (HIV-1 and HIV-2) and arthritis and caprine encephalitis virus (CAEV), which peptide fragments are capable of modifying the immunogenic properties of DIP , so that the lentivirus Env protein containing them does not cause the production of facilitating or deleterious antibodies against wild-type DIP, whereas it retains the capacity to produce neutralizing antibodies.
- PID wild primary immunodominant domain
- TM wild transmembrane protein
- CAEV caprine encephalitis virus
- DIP mutant is understood, within the meaning of the present invention, at least one sequence between the two cysteines of a wild DIP of a TM protein of a lentivirus, which sequence is modified (1) either by that at least one inoacid is mutated, (2) either in that it comprises the sequence of a DIP of a Env protein lentivirus different from that in which said DIP sequence is inserted.
- said peptide fragments can comprise downstream and / or upstream of said sequence between the two cysteines, at least one additional amino acid.
- Such peptide fragments therefore replace the main immuno ⁇ dominant domain (DIP) of a wild transmembrane protein (TM) of lentivirus and in particular of the feline immunodeficiency virus (VIF), of the human immunodeficiency virus (VTH-1 and HTV-2) and the arthritis virus and caprine encephalitis (CAEV) and constitute functional mutants of the Env protein DIP into which they are inserted.
- DIP main immuno ⁇ dominant domain
- TM wild transmembrane protein
- VIF feline immunodeficiency virus
- VTH-1 and HTV-2 human immunodeficiency virus
- CAEV arthritis virus and caprine encephalitis
- n92 the CRPAAFFCK fragment
- sequences ID No. 1 to JD No. 10 are functional mutants of the DIP of VIF; in particular, the sequence ED No. 10 contains the sequence of the DIP of HIV-1, in a sequence of the VIF (that is to say in the context of the VTF), while the SEQ ID Nos. 1 and 12 are functional mutants of the HIV-1 DIP: SEQ ID No. 11 contains the sequence of the VIF DIP in the context of HIV-1 (HIV-1 / VIF chimera) and SEQ ID No. 12 contains the VIS DIP sequence in the context of HIV-1 (chimera HTV-1 / SIV). The sequences SEQ ID No. 1 there 9 are mutated sequences of the DIP of the VIF.
- the present invention also relates to Env proteins, characterized in that they are mutated in the main immunodominant domain (DIP) of the transmembrane protein (TM) of lentiviruses and in particular of the feline immunodeficiency virus (VIF), human immunodeficiency virus (HIV-1 and HIV-2) and arthritis and caprine encephalitis virus (CAEV), and in that they comprise one of the fragments such as defined above, at the DIP level, which proteins do not cause the production of deleterious antibodies, in particular facilitating antibodies, against wild DIP, but retain an adequate conformation for the production of a protective immune response, including in particular the production of neutralizing antibodies for a protective vaccine application.
- DIP main immunodominant domain
- TM transmembrane protein
- VEF feline immunodeficiency virus
- HIV-1 and HIV-2 human immunodeficiency virus
- CAEV caprine encephalitis virus
- the present invention also relates to vectors for expressing lentivirus Env proteins, characterized in that they comprise at least one mutated nucleic acid fragment coding for a mutated Env protein as defined above.
- such vectors allow the expression of a functional viral envelope, but whose immunological reactivity is significantly modified, compared to that of the wild-type Env protein. Indeed, the mutated and expressed protein does not lead to the production of facilitating antibodies against
- said expression vector consists of an expression vector, comprising a sequence coding for a VIF Env protein, in which the sequence coding for DIP (sequence 2077-2115, with reference to the sequence of formula I of Application EP 0 577 458) is replaced by a sequence coding for any one of the peptide fragments SEQ Nos. 1 to 10, as defined above.
- Said vector can advantageously be constructed from a vector as described in G. PANCINO et al., Virology, 1995, 206, 796-806.
- said expression vector consists of an expression vector, comprising a sequence coding for a VTH-1 Env protein in which the sequence coding for wild-type DIP is replaced by a coding sequence for a mutant of the wild primary immuno-dominant domain (DIP) of a wild transmembrane protein (TM), derived from the human immunodeficiency virus (HIV-1 and VJ ⁇ -2) or another lentivirus and capable of modifying the immunogenic properties of DIP; preferably, said sequence codes for any one of the peptide fragments SEQ No. 11 or 12, as defined above.
- sequences coding for DP are selected from the following sequences (SEQ ID N ° 13 to 24):
- sequence ID No. 7 TGT TTG ACA GAT TCG TTT TTC TGC AAA (SEQ ID No. 19), for obtaining the vector pn67 ⁇ 20,
- nucleic acid sequences according to the invention include all the sequences coding for the same amino acids (amino acid coded by a codon different from that illustrated in sequences 13 to 24).
- the present invention also relates to infectious molecular clones of mutated lentiviruses, characterized in that they include a sequence coding for a mutated Env protein, as defined above.
- said mutated clones are obtained by introduction into an infectious molecular clone of VIF, preferably in the molecular clone infectious area p34TF10, of a fragment containing the above-mentioned mutations at the level of the sequences coding for DIP, in place of the corresponding wild-type sequences.
- clones According to the mutated sequence introduced, the following clones are obtained: pTf8, pTfd, pTfh, pTnl4, pTnl9, pTn67, pTn73, pTn92 and pTM5.
- Such clones are in particular obtained by incorporation into the genome of "VTF p34TF10, of Spel-BstBI 8287-8918 fragments of said genome of VIF p34TF10 containing the above-mentioned mutations, in place of the corresponding wild-type sequences.
- said mutated clones are obtained by introduction into a infectious molecular clone of HIV-1, of a fragment containing the above-mentioned mutations, at the level of the sequences coding for DP, in place of the corresponding wild-type sequences.
- a subject of the present invention is also vacinal compositions, characterized in that they comprise at least one mutated Env protein and / or at least one expression vector and / or at least one mutated clone, as defined above. above.
- the present invention further relates to a method for monitoring an anti-lentivirus vaccination and / or for differentiating between an anti-lentivirus vaccination and a lentivirus infection, characterized in that it comprises the implementation in contact with a peptide fragment according to the invention with a biological sample (blood, in particular) and the detection of the antigen (peptide fragment) - antibody complex (produced during vaccination or during infection) formed, by any appropriate means.
- the mutated DP advantageously serves as a marker sequence; indeed, the antibodies produced against DP will be different in the event of vaccination (mutated DP) and in the event of infection (wild-type DP).
- wild-type DP if a viral infection occurs during vaccination, we can effectively distinguish it, the two immunological responses being different, due to the presence of the mutated DP and the absence of wild-type DP, in the vaccine composition .
- detection systems such as those described in European Patent Applications No. 0 564 477 of November 20, 1991, No. 0 577 458 of June 16, 1993, and French No. 94 07062 of June 9, 1994; to detect the mutated DP, analogous detection systems can be used, using the peptides of the mutated DP as defined above, as reactants, instead of the wild-type DP (see Example 1).
- FIG. 1 represents the alignment of the sequences of the DPs of TM of different lentiviruses
- FIG. 2 represents the envelope expression vector pT ⁇ 20
- FIG. 3 shows the result of the fusion tests with the vector containing the sequence M5.
- Example 1 Construction of mutants in the VIF context (chimeras in which an HIV DIP replaces the wild VIF DIP, in an Env sequence of VIF).
- sequence coding for the Env protein of " VTF is modified, so that the sequences coding for the peptide fragments according to the invention as defined above (SEQ ID Nos. 1 to 10) are inserted, at the place of the sequence coding for the abovementioned P237 peptide (positions 2077-2115 of the sequence coding for the Env protein, as described in European Patent Application No. 0 577 458; said sequences coding for an Env protein, thus modified ( mutant env sequences), are inserted into a vector called pT ⁇ 20, which comprises a deletion from nucleotide 923 to nucleotide 5410 in the VIF gene (gag and pot genes).
- pT ⁇ 20 which comprises a deletion from nucleotide 923 to nucleotide 5410 in the VIF gene (gag and pot genes).
- the Env expression vector pT ⁇ 20 (FIG. 2) is derived from the infectious molecular clone of VIF p34TF10, by deletion of the gag andpol genes.
- a deletion of the gag and pol genes is carried out in the provirus p34TF10 (TALBOTT et al., Proc. Natl. Acad. Sci. USA, 1989, 86, 5743-5747) by Tthl 11-EcoRV digestion and religation after treatment with the Klenow enzyme.
- a clone, called pT ⁇ 20, which includes a larger deletion, from nucleotide 923 to nucleotide 5410 effectively expresses said Env protein, after transfection into CrFK cells (Virology, 1995, 206, 796-806).
- Example 2 Mutated peptides obtained in Example 1 and Env proteins containing them: functionality and reactivity. * Method:
- the aforementioned expression vectors (pf8 ⁇ 20, pfd ⁇ 20, pfh ⁇ 20, prm ⁇ 20, pnl4 ⁇ 20, pnl9 ⁇ 20, pn67 ⁇ 20, pn73aA20, pn92 ⁇ 20, pM5 ⁇ 20,) producing mutated Env proteins in the form of the invention are transfected into CrFK cells and analyzed for their ability to induce fusion of cell membranes (formation of syncytia).
- a cell line of feline fibroblasts CrFK-H06Tl / 2 (OSBORNE et al., J. Gen. Virol., 1994, 75, 3641-3645) is cultured in a modified Eagle Dulbecco medium supplemented with 10% calf serum.
- the plasmids are purified using the maxiprep Promega system, then extracted with phenol-chloroform.
- the transfection is carried out using the calcium phosphate precipitation method.
- the transfection conditions are optimized and standardized using plasmids expressing the reporter genes ⁇ -galactosidase or luciferase.
- an ELIS A with the peptides according to the invention is carried out.
- Microtiter plates containing 96 wells (Immunolon ® 2) are covered with said peptide in carbonate buffer 0, 1 M, pH 9.6 (5 ug ml) at 4 ° C overnight.
- feline sera diluted in PBS, 1% bovine serum albumin and 0.1% Tween 20 are added and incubated for 2 hours.
- the reactivity of the mutated domains can be tested with human sera infected with HIV-1.
- the protocol is the same, except for the use of 5% fetal calf serum, in place of bovine serum albumin.
- the mutated vector pM5 ⁇ 20 containing a mutated fragment of the HIV DP, was tested in another experiment and also showed the formation of syn ⁇ cytia.
- FIG. 3 illustrates the results obtained with the vector M5 (in comparison with the wild type W).
- the HIV VP M5 chimeras are capable of inducing the formation of syncytia (Figure 3), smaller in size (5-20 nuclei, 48 hours after transfection) than those induced by the wild type (W).
- the size and number of syncytia induced by M5 increases over time up to 72 hours.
- DP by the mutations which preserve the fusogenic capacity of the mutant envelopes are tested by “ELISA peptide”.
- the peptides corresponding to the mutated DP (Table I) are synthesized and used to cover ELISA microplates. 8 sera from cats, experimentally infected with 4 different isolates of VP and 11 sera from cats naturally infected are tested to evaluate the reactivity of these peptides.
- the optical density values obtained with the mutant DP peptides are compared with the values obtained with the wild-type DP peptide (TM2) comprising the peptide P237.
- Peptides p237 and SP89029 (Catalog ANRS, 1994) corresponding to the sequences of VP and VTH-1 (DP) respectively and 2 peptides chemically cyclized between the two cysteines (Y-15-Vc (YOELGCNONOFFCLV and L-15 -Tc fLLGIWGCSGKLICTT) respectively for VP and VTH-1), so as to mimic natural folding, were used to cover microtiter plates.
- VP of DP in the context of IPV-1 or other mutations that modify the antigenic properties of DP of IPV-1.
- a reciprocal approach is also possible in the case of vaccination against VP, using a DP VTH-1 or other mutated sequences of the VP envelope.
- the Env expression vector pT ⁇ 20 derived from the infectious molecular clone of VP p34TF10, by deletion of the gag andpol genes, is used to vaccinate cats.
- the vector pT ⁇ 20 is injected intramuscularly into 4 cats (4 injections of 200-400 ⁇ g of DNA).
- the antico ants response is analyzed using 4 different pepti ⁇ corresponding to the epitopes of linear B cells (SU2, SU3, TM2 and TM4) by ELISA and by immunoprecipitation of Env glycoproteins, from lysates of a FL4 cell line, infected with VP, after labeling 35 S.
- Example 4 Construction of mutants in the chimeric VTH-1 context in which a DIP of VIF or VIS replaces the wild DIP of VT ⁇ -1. in an Env sequence of VTH-1 1; functionality and reactivity of the products obtained.
- sequence coding for the Env protein of VTH-1 is modified, so that the sequences coding for the peptide fragments SEQ ID No. 1 1 or 12, as defined above, are inserted, in place of the sequence coding for the peptide fragment contained between the two cysteines of the DP of VTH-1. Sequences are thus obtained coding for modified Env proteins, in which the sequence contained between the two cysteines of the DP of VTH-1, in the envelope of HIV-1 LAI, has been replaced by the corresponding sequences of the virus of feline immunodeficiency (VP) or VIS.
- VP feline immunodeficiency
- the Smal-BamHI fragment of the envelope of VTH-1 LAI was subcloned into the plasmid pTZ18 and the mutations were introduced by site-directed mutagenesis (Kunkel), using oligonucleotides corresponding to the mutations, as specified above:
- P s t F I V 5'-ATTTGGGGTTGCAATCAAAATCAATTCTTCTGCACCACTGCAGTGCCTTGGAAT-3 '; P s t S I V:
- a PstI restriction site upstream of the DP has also been introduced into the envelope, so as not to modify the amino acid sequence.
- the mutated fragment was then cloned into the expression vector pMA243 (DRAGIC T. et al., J. Virol., 1992, 66, 4794-4802), to analyze the properties of the mutant envelopes.
- the capacity of the mutant envelopes to induce fusion between cellular membranes, property of the wild envelope, was analyzed using a fusion test carried out after transfection of the envelopes in COS cells and coculture with HeLa cells expressing the cellular receptor.
- HIV-1, CD4, and the gene for ⁇ -galactosidase placed under the control of HIV-1 LTR (DRAGIC T. et al supra. CHARNEAU P et al, J. Virol, 1992, 66, 2814-... 2820).
- the fusion of two cell types cells, mediated by the HIV-1 envelope activates the expression of ⁇ -galactosidase and the fused cells can be detected by a blue color, derived from an enzymatic reaction.
- the two mutant envelopes induced cell fusions and the formation of syn- cytia (Table II).
- the chimeric clone containing the sequence of VP in the context of the envelope of HIV-1 has shown good efficacy in inducing cell fusion.
- NAME PANCINO Gianfranco
- B STREET: 14 QUAI DE LA MARNE
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96909201A EP0817855A1 (fr) | 1995-03-27 | 1996-03-26 | Proteines mutees, codees par un gene env mute de lentivirus, fragments peptidiques et vecteurs d'expression |
US08/913,953 US5994516A (en) | 1995-03-27 | 1996-03-26 | Mutated proteins encoded by a lentivirus mutated env gene, peptide fragments and expression vectors |
JP8529002A JPH11503010A (ja) | 1995-03-27 | 1996-03-26 | レンチウイルス変異env遺伝子によりコードされる変異タンパク質、ペプチドフラグメント及び発現ベクター |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9503566A FR2732346B1 (fr) | 1995-03-27 | 1995-03-27 | Proteines mutees, codees par un gene env mute de lentivirus, fragments peptidiques inclus dans lesdites proteines, vecteurs d'expression exprimant lesdites proteines mutees et leurs applications |
FR95/03566 | 1995-03-27 |
Publications (1)
Publication Number | Publication Date |
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WO1996030527A1 true WO1996030527A1 (fr) | 1996-10-03 |
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ID=9477447
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Application Number | Title | Priority Date | Filing Date |
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PCT/FR1996/000449 WO1996030527A1 (fr) | 1995-03-27 | 1996-03-26 | Proteines mutees, codees par un gene env mute de lentivirus, fragments peptidiques et vecteurs d'expression |
Country Status (6)
Country | Link |
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US (1) | US5994516A (fr) |
EP (1) | EP0817855A1 (fr) |
JP (1) | JPH11503010A (fr) |
CA (1) | CA2216612A1 (fr) |
FR (1) | FR2732346B1 (fr) |
WO (1) | WO1996030527A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997033615A3 (fr) * | 1996-03-15 | 1998-03-05 | Univ Southern California | Virus de l'arthrite/encephalite caprine assurant une immunoprotection contre l'infection due au vih-1 |
EP0953574A1 (fr) * | 1998-04-30 | 1999-11-03 | Innogenetics N.V. | Agent immunodiagnostique pour la détection d'infections par le virus de Maedi-Visna et CAEV |
US6602505B2 (en) | 1998-04-30 | 2003-08-05 | University Of Southern California | Viral chimeras comprised of CAEV and HIV-1 genetic elements |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE602004021829D1 (de) * | 2003-09-11 | 2009-08-13 | Idexx Lab Inc | Verfahren zum nachweis des felinen immunschwächevirus |
AU2005267607B8 (en) * | 2003-09-11 | 2009-07-16 | Idexx Laboratories, Inc. | Method and device for detecting feline immunodeficiency virus |
EP1709447B1 (fr) * | 2003-12-18 | 2009-06-24 | Idexx Laboratories, Inc. | Procede pour detecter le virus d'immunideficience feline |
EP1723425B1 (fr) * | 2004-02-19 | 2011-04-06 | Idexx Laboratories, Inc. | Methode et dispositif de detection du virus de l'immunodeficience feline |
EP1761556A1 (fr) * | 2004-06-30 | 2007-03-14 | Idexx Laboratories, Inc. | Procédé et appareil servant à détecter le virus de l'immunodéficience féline (vif) comprenant l'utilisation de peptides dérivés de la région v3 de la protéine env du vif |
EP1761564A1 (fr) * | 2004-06-30 | 2007-03-14 | Idexx Laboratories, Inc. | Procédé et dispositif pour détecter un virus d'immunodéficience féline |
US7291338B2 (en) * | 2005-03-09 | 2007-11-06 | Idexx Laboratories, Inc. | Method and device for detecting feline immunodeficiency virus |
EP2553452B1 (fr) | 2010-04-02 | 2015-03-04 | IDEXX Laboratories, Inc. | Détection du virus de l'immunodéficience féline |
US20160251680A1 (en) | 2013-11-05 | 2016-09-01 | Clontech Laboratories, Inc. | Dry transfection compositions and methods for making and using the same |
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FR2721031B1 (fr) * | 1994-06-09 | 1996-07-26 | Centre Nat Rech Scient | Fragment peptidique spécifique du virus de l'immunodéficience féline (VIF) et son utilisation comme réactif de diagnostic. |
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1995
- 1995-03-27 FR FR9503566A patent/FR2732346B1/fr not_active Expired - Fee Related
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1996
- 1996-03-26 US US08/913,953 patent/US5994516A/en not_active Expired - Fee Related
- 1996-03-26 CA CA002216612A patent/CA2216612A1/fr not_active Abandoned
- 1996-03-26 WO PCT/FR1996/000449 patent/WO1996030527A1/fr not_active Application Discontinuation
- 1996-03-26 EP EP96909201A patent/EP0817855A1/fr not_active Withdrawn
- 1996-03-26 JP JP8529002A patent/JPH11503010A/ja active Pending
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997033615A3 (fr) * | 1996-03-15 | 1998-03-05 | Univ Southern California | Virus de l'arthrite/encephalite caprine assurant une immunoprotection contre l'infection due au vih-1 |
EP0953574A1 (fr) * | 1998-04-30 | 1999-11-03 | Innogenetics N.V. | Agent immunodiagnostique pour la détection d'infections par le virus de Maedi-Visna et CAEV |
WO1999057141A1 (fr) * | 1998-04-30 | 1999-11-11 | Innogenetics N.V. | Reactif d'immunodiagnostic pour la detection d'une infection par le virus maedi-visna et le virus arthrite-encephalite caprine |
US6602505B2 (en) | 1998-04-30 | 2003-08-05 | University Of Southern California | Viral chimeras comprised of CAEV and HIV-1 genetic elements |
Also Published As
Publication number | Publication date |
---|---|
JPH11503010A (ja) | 1999-03-23 |
US5994516A (en) | 1999-11-30 |
FR2732346B1 (fr) | 1997-05-30 |
CA2216612A1 (fr) | 1996-10-03 |
FR2732346A1 (fr) | 1996-10-04 |
EP0817855A1 (fr) | 1998-01-14 |
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