Journal: Journal of Virology
Article Title: Single-base m 6 A epitranscriptomics reveals novel HIV-1 host interaction targets in primary CD4 + T cells
doi: 10.1128/jvi.01536-25
Figure Lengend Snippet: Knockdown of PLIN3 in primary CD4 + T cells decreases HIV-1 production but increases viral infectivity. ( A–D ) Primary CD4 + T cells were transduced with lentiviral vectors expressing non-targeting (Ctrl) or PLIN3 small guide (sg) RNA to achieve partial stable knockdown of PLIN3. Cells were then infected with HIV-1 NL4–3 at an MOI of 1 for 96 h. ( A ) Relative levels of PLIN3 expression and HIV-1 infection were measured by IB in cells from three independent donors. ( B ) Relative quantification of PLIN3 protein expression is shown in ( A ). ( C ) Relative levels of HIV-1 protein expression are shown in ( A ). ( D ) Cell supernatant p24 levels from HIV-1-infected cells were quantified by ELISA. ( E ) TZM-bl cells were infected with HIV-1 collected from sgCtrl or sgPLIN3 cell culture supernatants. Luciferase activity was measured at 48 hpi. ( F–H ) Primary activated CD4 + T cells from one additional donor were nucleofected with control crRNA or one of three different crRNAs specifically targeting PLIN3 . ( F ) Western blot analysis of PLIN3 knockdown efficiency. GAPDH was used as a loading control. Relative PLIN3 levels were normalized to GAPDH. ( G ) The cells used in ( F ) were subsequently infected with HIV-1 NL4-3 at an MOI of 1 for 96 h, and p24 levels in the supernatant were measured by ELISA. ( H ) TZM-bl cells were infected with HIV-1 collected from Ctrl or crPLIN3 cell culture supernatants. Luciferase activity was measured at 48 hpi and normalized to protein amounts. Data are shown as means ± SD from three individual donors or 2–4 technical replicates. A two-tailed unpaired t -test ( B ), multiple unpaired t -test ( C–E ), and one-way ANOVA ( G and H ) were used for statistical analysis ( P values are shown on figures). ns, not significant.
Article Snippet: Antibodies used for immunoblotting were as follows: HIV-1 p24 (clone #24-2, the AIDS Research and Reference Reagent Program, NIH), GAPDH (AHP1628, Bio-Rad), METTL3 (15073, Proteintech), METTL14 (CL4252, Abcam), PLIN3 (10694-1-AP, Proteintech), and HIV-Ig (3957, the AIDS Research and Reference Reagent Program, NIH).
Techniques: Knockdown, Infection, Transduction, Expressing, Quantitative Proteomics, Enzyme-linked Immunosorbent Assay, Cell Culture, Luciferase, Activity Assay, Control, Western Blot, Two Tailed Test