TsES-primed BMDCs upregulated Foxp3+ CD4+CD25+ T cells populations and Treg cytokines in naive T cells. T cells were isolated from naive BALB/c mice splenocytes and co-cultured with AES-, MES-, LPS-, BSA-, or PBS-treated BMDCs in the presence of anti-CD3/anti-CD28 for 48 h. (A) The cells were sorted with CD3, CD4, CD25, and Foxp3 by FACS. (B) Percentage of CD25+Foxp3+ cells in a CD4+ T cell population is shown. (C) Cytokines in co-cultured supernatants were detected by ELISA. Data are shown as the means ± SDs for three independent experiments. Results represent one of three independent experiments. * p < 0.05; ** p < 0.01; *** p < 0.001, compared to PBS or BSA control.