HIV-1 indicator cell lines - PubMed (original) (raw)
HIV-1 indicator cell lines
A Akrigg et al. AIDS. 1991 Feb.
Abstract
A simple quantitative bioassay for infectious HIV-1 has been developed. The assay is based on adherent CD4+ HeLa cell lines stably transfected with episomal vectors carrying the Escherichia coli beta-galactosidase gene under the control of the HIV long terminal repeat (LTR) promoter. HIV infection of these cell lines transactivates the LTR promoter inducing beta-galactosidase production. Infected cells and virus foci can be stained dark blue by the addition of the chromogenic substrate X-Gal. Alternatively, a readily automatable quantitative enzyme assay can be performed on the infected cultures. Because of its simplicity the bioassay may be useful for routine quantification of HIV-infected cultures, plaque purification, virus neutralization studies and for the screening of antiviral agents.
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