Fig. 8

Impact of UNG2 and RPA32 for dissemination of cell-free virus particles between MDMs and Jurkat T cells. a Schematic representation of the experimental system. MDMs were infected with replication-competent HIV-1 (NL4.3 strain) co-expressing the VSV-G envelope, and the cell culture supernatant was then collected 8 days later. After p24 normalization, cell-free viruses produced by MDMs were used for infection of shLuc-, shUNG2- or shRPA32-transduced Jurkat cells, and virus production was monitored after infection. b and c Replication in Jurkat cells of MDMs-produced viruses. Replication-competent viruses were produced in MDMs and then used for infection of shLuc- (black lines and bars), shUNG2- (red lines and bars) or shRPA32- (green lines and bars) transduced Jurkat cells. Aliquots of cell culture supernatants were collected 2, 4 and 8 days after infection for p24 quantification. In b, the individual kinetics of replication in shRNA-tranduced Jurkat cells of viruses produced in MDMs from five different donors are shown. In c, results are expressed as the percentage of p24 production at each time point relative to that of shLuc-transduced Jurkat cells. Values are the means of two independent experiments performed with virus produced in MDMs from five different donors. Error bars represent the SEM. Statistical significance was determined using Students t test (ns, p > 0.05; *p < 0.05; **p < 0.01; ***p < 0.001)