Fig. 6.

Cyclosporin A inhibits replication of mutant HIV-1 lacking CyPA. CEM cells were inoculated with aliquots of viruses containing 30,000 cpm reverse transcriptase activity. After overnight culturing, the cells were pelleted to remove input virus, and cultured in 2 ml media in the presence (dashed lines) and absence (solid lines) of 2.5 µM CsA. Virus production was monitored periodically by assaying for reverse transcriptase activity in the supernatants. Panel A: wild-type HIV-1; C: HIV-1 containing a mutation of Pro222 to Ala in capsid; E: HIV-1 containing a mutation of Gly221 to Ala in capsid. Replication of the nef-defective variants of R7, R7.222, and R7.221 are shown in panels B, D, and F, respectively.