Journal: iScience
Article Title: Translation factor eIF4G2 directs CD8 + T cell lineage commitment by selectively enabling the IL-7 receptor response
doi: 10.1016/j.isci.2026.115313
Figure Lengend Snippet: eIF4G2 post-transcriptionally sustains γc expression via its mRNA UTRs (A–C) Analysis in primary CD4 + CD8 lo transitional thymocytes. (A) Western blot analysis of γc and IL-7Rα protein levels. (B and C) Quantitative RT-PCR analysis of Il2rg (B) and Il7r (C) mRNA levels ( n = 3, ns p > 0.05, ∗ p < 0.05). (D–H) Mechanistic dissection in 293T cells. (D) Western blot of γc protein in control and EIF4G2 knockdown 293T cells transfected with an IL2RG coding sequence construct containing its native 5′ and 3′ UTRs. (E) Corresponding IL2RG mRNA levels measured by RT-qPCR ( n = 3, ns p > 0.05) . (F and G) Assessment of γc protein stability ( n = 3, ns p > 0.05). (F) Representative western blots and (G) quantification of γc protein levels over time following cycloheximide (CHX) treatment in si-control and si- EIF4G2 293T cells ( n = 3, ns p > 0.05). (H) Western blot of γc protein in si-control and si- EIF4G2 293T cells transfected with an IL2RG CDS construct lacking UTRs. Data are representative of at least two independent experiments. Bar graphs show mean ± SEM and unpaired Students’ t test was used to perform the statistical analysis.
Article Snippet: Cells were transfected either with a non-targeting control siRNA (si-Control) or human EIF4G2 targeting siRNA (si- EIF4G2 ) (Sangon Biotech) using Lipofectamine RNAiMAX transfection reagent (Invitrogen).
Techniques: Expressing, Western Blot, Quantitative RT-PCR, Dissection, Control, Knockdown, Transfection, Sequencing, Construct