Inhibition of microRNA-543 expression increases the protein expression of p-JAK2, p-STAT3, c-Myc and Bcl-2 in liver cancer cells. (A) Western blot analysis of p-JAK2, p-STAT3, c-Myc and Bcl-2 proteins in (left) MHCC97 and (right) Hep3B cells. Quantification of p-JAK2 in (B) MHCC97 and (C) Hep3B cells, p-STAT3 in (D) MHCC97 and (E) Hep3B cells, c-Myc in (F) MHCC97 and (G) Hep3B cells, and Bcl-2 in (H) MHCC97 and (I) Hep3B cells. **P<0.01 vs. negative group. p-, phospho-; JAK2, Janus kinase 2; STAT3, signal transducer and activator of transcription 3; Bcl-2, B-cell lymphoma 2.