共 35 条
EXPRESSION OF HIV-1 ENVELOPE GLYCOPROTEINS BY SEMLIKI FOREST VIRUS VECTORS
被引:34
作者:

PAUL, NL
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机构: NOVUM,KAROLINSKA INST,DEPT MOLEC BIOL,S-14157 HUDDINGE,SWEDEN

MARSH, M
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机构: NOVUM,KAROLINSKA INST,DEPT MOLEC BIOL,S-14157 HUDDINGE,SWEDEN

MCKEATING, JA
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机构: NOVUM,KAROLINSKA INST,DEPT MOLEC BIOL,S-14157 HUDDINGE,SWEDEN

SCHULZ, TF
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机构: NOVUM,KAROLINSKA INST,DEPT MOLEC BIOL,S-14157 HUDDINGE,SWEDEN

LILJESTROM, P
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机构: NOVUM,KAROLINSKA INST,DEPT MOLEC BIOL,S-14157 HUDDINGE,SWEDEN

GAROFF, H
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机构: NOVUM,KAROLINSKA INST,DEPT MOLEC BIOL,S-14157 HUDDINGE,SWEDEN

WEISS, RA
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机构: NOVUM,KAROLINSKA INST,DEPT MOLEC BIOL,S-14157 HUDDINGE,SWEDEN
机构:
[1] NOVUM,KAROLINSKA INST,DEPT MOLEC BIOL,S-14157 HUDDINGE,SWEDEN
[2] UNIV LONDON UNIV COLL,MRC,MOLEC CELL BIOL LAB,LONDON WC1E 6BT,ENGLAND
[3] UNIV LONDON UNIV COLL,DEPT BIOL,LONDON WC1E 6BT,ENGLAND
关键词:
D O I:
10.1089/aid.1993.9.963
中图分类号:
R392 [医学免疫学];
Q939.91 [免疫学];
学科分类号:
100102 ;
摘要:
We have used Semliki Forest virus (SFV) vectors to express both the human immunodeficiency virus type 1 (HIV-1) envelope precursor gp160 and the cleaved external portion gp120. Expression of the foreign gene in this system is by transfection of recombinant SFV RNA, or by infection with a recombinant SFV virus that has a wide host range. pSFV1-gp120 or pSFV1-gp160 were expressed in baby hamster kidney (BHK) cells and two human cell lines: HeLa cervical carcinoma and MOLT-4 CD4+ T cells. After SFV1-gp120 infection of HeLa cells, 3.3 mug of gp120 was secreted into the media by 1 million cells in a 24-hr period. The secreted envelope glycoprotein was recognized by anti-gp120 monoclonal antibodies directed against both linear and conformation-dependent epitopes in different regions of the molecule. The recombinant gp120 also bound to a soluble form of the CD4 receptor. Syncytium formation was observed when MOLT-4 cells were infected with SFV1-gp160. The gp160 expressed by BHK cells induced syncytia during cocultivation with C8166 CD4+ T cells. These data indicate that SFV vectors can be used to produce the HIV-1 envelope glycoproteins to high levels, and that these proteins are correctly processed, folded, and transported to the cell surface. Furthermore, they exhibit functional activity as indicated by their ability to bind to soluble receptor and induce cell-to-cell fusion.
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页码:963 / 970
页数:8
相关论文
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