FIGURE 5.
The effects of leptin on activated T cell function and metabolism are hematopoietic cell intrinsic. Irradiated Rag recipient mice were transplanted with bone marrow isolated from wildtype (db+/+; black bars) or leptin receptor-deficient (db−/−; white bars) donors. Following full immune reconstitution at 18 weeks, the following experiments were performed. (A) CD4+ T cells were isolated and activated with anti-CD3 and anti-CD28 for 48 hours, followed by measurement of IFN-γ production by ELISA. (B and C) Resting and activated CD4+ T cells were evaluated for glucose uptake; data are representative of five independent experiments (B) and glycolytic flux; data are representative of three independent experiments (C).