PRODUCTION OF IMMUNOGENIC HIV-1 VIRUS-LIKE PARTICLES IN STABLY ENGINEERED MONKEY CELL-LINES

被引:30
作者
HAYNES, JR
CAO, SX
ROVINSKI, B
SIA, C
JAMES, O
DEKABAN, GA
KLEIN, MH
机构
[1] JOHN P ROBARTS RES INST,LONDON,ONTARIO,CANADA
[2] MCMASTER UNIV,DEPT PATHOL,HAMILTON L8S 4L8,ONTARIO,CANADA
关键词
D O I
10.1089/aid.1991.7.17
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
A proviral fragment from human immunodeficiency virus type 1 (HIV-1) (LAV-1BRU) containing only protein-coding information, was expressed in COS cells using constitutive promoters in transient and stable transfection experiments. The presence of viruslike particles in cell supernatants was verified by Western blot analysis, density gradient centrifugation, and electron microscopy. Transfection of Vero cells with a similar construct employing the human metallothionein promoter led to the isolation of stable cell lines exhibiting inducible viruslike particle expression in response to cadmium chloride treatment. Induction ratios for viruslike particle expression were in excess of 1000-fold with production levels of p24 core antigen as high as 0.6 mg/L per 24 h. HIV-1 viruslike particles were immunogenic in mice, leading to strong envelope and core-specific humoral responses after two immunizations. The development of stable cell lines expressing significant quantities of HIV-1 viruslike particles offers an alternative to the use of live virus vectors for the production and evaluation of particle-based AIDS vaccines.
引用
收藏
页码:17 / 27
页数:11
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