发明名称 |
Immunoassay diagnostic kit containing antigens derived from self-assembled, non-infectious, non-replicating, immunogenic retrovirus-like particles comprising modified HIV genomes and chimeric envelope glycoproteins |
摘要 |
This invention is directed toward diagnostic kits and antigens useful for the detection of viral antigens in a test sample. The kit contains antigens obtained from self-assembled, non-infectious, non-replicating, immunogenic retrovirus-like particles comprising modified HIV-1 genomes devoid of long terminal repeats and containing nucleotide sequences encoding chimeric envelope glycoproteins. One preferred embodiment discloses the engineering of a series of expression vectors in which a synthetic oligomer encoding gp120 residues 306 to 328 (amino acids YNKRKRIHIGP GRAFYTTKNIIG) from the V3 loop of the MN viral isolate was inserted at various positions within the endogenous HIV-1LAI env gene. Expression studies revealed that insertion of the heterologous V3(MN) loop segment resulted in the secretion of fully assembled HIV-like particles containing chimeric LAI/MN envelope glycoproteins. Both V3 loop epitopes were recognized by loop-specific neutralizing antibodies. Immunization with HIV-like particles containing chimeric envelope proteins induced specific antibody responses against both the autologous and heterologous V3 loop epitopes, including cross-neutralizing antibodies against the HIV-1LAI and HIV-1MN isolates.
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申请公布号 |
US5849475(A) |
申请公布日期 |
1998.12.15 |
申请号 |
US19950452503 |
申请日期 |
1995.05.30 |
申请人 |
ROVINSKI ET AL, BENJAMIN |
发明人 |
ROVINSKI, BENJAMIN;HAYNES, JOEL;CAO, SHI XIAN;KLEIN, MICHEL HENRI |
分类号 |
C07K16/10;G01N33/569;(IPC1-7):C12Q1/70;A61K39/21;A61K39/12;A61K39/295 |
主分类号 |
C07K16/10 |
代理机构 |
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代理人 |
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地址 |
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