MiR-15a exerted its function by targeting STAT3. A, Transfection efficacy of pcDNA-STAT3. B, C, Downregulated levels of TNF-a and IL-6 by transfection of miR-15a mimics were partially reversed by STAT3 overexpression. D, The inhibited apoptosis due to miR-15a overexpression was greatly accelerated after transfection of pcDNA-STAT3. *p<0.05, **p<0.01, ***p<0.001, &No significance.