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Infection of CD4+ Primary Cell Lines and Induction of HIV

Chronically infected cell lines and clones are currently used as sources of virus to be used to infect other cell types as “factories” for large‐scale production of virus or viral components and as model systems for studies of the regulation of virus expression. In this unit, conditions for acute in vitro HIV infection are described. “Survivor” cells, resistant to the cytopathic effect of the virus, can be obtained from acute cultures. These survivor cells maintain an intact proliferative capacity and are considered to be chronically infected; their generation is described here. Finally, it is often desirable to study the effects of stimulants on HIV induction in these chronically infected cell lines; this procedure is detailed in a third protocol.