Inhibition of miR-21 or miR-125b in early-passage iMSCs affects the immunomodulatory function of their EVs. (A-B) After treatment with EVs (0.75 to 3 X109 particles/ml) from P5 iMSCs transfected with control or miR-21/miR-125b inhibitors, levels of IFN-γ, IL-6, IL-17, and TGF-β1 in conditioned medium of LPS-stimulated splenocytes were determined with ELISA. (C) Relative mRNA levels of IFN-γ, IL-6, IL-17 and IL-21 in cocultured human SGECs and PBMCs treated with these EVs (3 X109 particles/ml) were determined with qRT-PCR. All data are presented as means ± SD (n=4). *: p < 0.05, **: p < 0.01, ***: p < 0.001, ****: p < 0.0001 by one-way ANOVA with Dunnett’s test.