Fig. 3: NOR-promoted Treg differentiation is independent of miRs under hypoxic microenvironment.

a CD4+ T cells were cultured with anti-CD3/CD28 (2 µg/ml), NOR (1, 3, 10, 30 μM), and TCDD (5 nM) in hypoxia for 24 h. The mRNA expressions of miR-31, miR-219, and miR-490 were analyzed by Q-PCR. b CD4+ T cells were transfected with miR-31 or NC mimic and mRNA expression of miR-31 was analyzed by Q-PCR. c CD4+ T cells were transfected with miR-31 or NC mimic, followed with incubation of anti-CD3/CD28 (2 µg/ml), NOR (30 μM), and TCDD (5 nM) in hypoxia for 72 h, and frequencies of Treg cells were analyzed by flow cytometry. Data were expressed as means ± SEM of three independent experiments. **P < 0.01 vs. Normal group