MiR-195 regulates cell apoptosis of human hepatocellular carcinoma cells by targeting LATS2

Pharmazie. 2012 Jul;67(7):645-51.

Abstract

Recently, we have reported tissue- and stage-specific expression of miR-195 in human hepatocellular carcinoma cells and so far, not many reports discuss the function of this microRNA (miRNA). Expression profiling of miRNAs revealed a limited set of miRNAs with altered expression in drug resistant hepatocellular carcinoma cell line BEL-7402/5-FU compared to its parental BEL-7402 cell line. Real-time PCR confirmed down-regulation of miR-195 in BEL-7402/5-FU cells. Western blots were performed to determine protein levels of LATS2, P53 and CDK2. MTT analysed the cell proliferation activity. Flow cytometry were performed to determine apoptosis rate. Up-regulation of miR-195 increased expression of LATS2 and increased apoptosis of HCC cells, while Anti-miR-195 treatment inhibited expression of LATS2. miR-195 over-expression inhibited the luciferase activity of a LATS2 3' untranslated region-based reporter construct in BEL-7402/5-FU cells. These results indicate that miR-195 could increase cell apoptosis by targeting LATS2 in hepatocellular carcinoma cells.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 3' Untranslated Regions / drug effects
  • 3' Untranslated Regions / genetics
  • Antimetabolites / pharmacology
  • Apoptosis / drug effects*
  • Apoptosis / genetics*
  • Blotting, Western
  • Carcinoma, Hepatocellular / genetics
  • Carcinoma, Hepatocellular / pathology
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Down-Regulation / physiology
  • Drug Resistance, Neoplasm / genetics
  • Fluorouracil / pharmacology
  • Humans
  • MicroRNAs / pharmacology*
  • Microarray Analysis
  • Nucleic Acid Hybridization
  • Plasmids / genetics
  • Protein Serine-Threonine Kinases / drug effects*
  • Protein Serine-Threonine Kinases / genetics
  • Real-Time Polymerase Chain Reaction
  • Transfection
  • Tumor Suppressor Protein p53 / biosynthesis
  • Tumor Suppressor Proteins / drug effects*
  • Tumor Suppressor Proteins / genetics

Substances

  • 3' Untranslated Regions
  • Antimetabolites
  • MIRN195 microRNA, human
  • MicroRNAs
  • Tumor Suppressor Protein p53
  • Tumor Suppressor Proteins
  • LATS2 protein, human
  • Protein Serine-Threonine Kinases
  • Fluorouracil