Real-time quantitative PCR analysis of human induced T regulatory cells (Tregs) for metabolic enzymes

Human naïve CD4 T cells were purified from healthy volunteers' blood and were differentiated into induced Tregs in vitro by culturing for 5 days in the presence of anti-CD3 and CD28 antibodies (2 µg/ml each), IL-2 (100 units/ml) and TGF-β1 (5 ng/ml) for 5 days, then in presence of anti-CD3 and CD28 antibodies for 2 days. Human iTregs were harvested on day 7 post differentiation, then treated with either vehicle or IL-21 (100 ng/ml) in serum-free RPMI media for 18 hours. qPCR gene expression profiling. Tregs from three donors were used and treated separately as indicated in the summary. Equal amount total RNA from each donor was used for gene expression analysis.