Inhibition of RUNX3 regulates the frequencies of Th17 and Th22 in CD4+ T cells from patients with psoriasis. The frequencies of Th17 and Th22 cells in CD4+ T cells from patients with psoriasis transfected with RUNX3 siRNA or an siRNA control was detected using flow cytometry. (A and B) Flow cytometric analysis of Th17 in CD4+ T cells from patients with psoriasis. The percentages of cells in the Q2 region represent the percentage of Th17 cells. (C and D) Flow cytometric analysis of Th22 in CD4+ T cells from patients with psoriasis. The percentages of cells in the Q2 region represent the percentage of Th22 cells. (E) Percentages of Th17 and Th22 cells in CD4+ T cells from patients with psoriasis transfected with RUNX3 siRNA or an siRNA control. Data are presented as the mean ± standard deviation of three experiments. *P<0.05, vs. control group. RUNX3, runt-related transcription factor 3; Th, T helper; IL, interleukin; siRNA, small interfering RNA.