title: [The role of Smad ubiquitination regulatory factor 1 in hepatocellular carcinoma].
abstract: OBJECTIVE
  To determine the expression level of Smad ubiquitination regulatory factor 1 (SMURF1) gene in hepatocellular carcinoma, and to explore its role in liver cancer.
  
  
  METHODS
  With non-neoplastic adjacent normal tissues as controls, real-time PCR and Western blotting were used for measuring the expression of SMURF1 mRNA and protein in 89 samples of hepatocellular carcinoma. Correlations between SMURF1 expression and clinical features were explored. Following transfection of SMURF1--specific small interference RNA(siRNA), the apoptosis and proliferation of hepatic cancer cells Hep G2 were detected using flow cytometry and MTT assays .
  
  
  RESULTS
  The expression of SMURF1 mRNA and protein were significantly higher in hepatocellular cancer tissues compared with the paired normal tissues (P< 0.05). The expression of SMURF1 however did not correlate with any clinical features (P> 0.05). Transfection of SMURF1-specific siRNA can promote the apoptosis whilst inhibit the proliferation of Hep G2 cells.
  
  
  CONCLUSIONS
  The expression of SMURF1 is enhanced in hepatocellular carcinoma, which may have played a role in the disease through affecting apoptosis and proliferation of hepatic cancer cells.
authors.affiliation: Department of General Surgery, Chinese People's Armed Police Forces, Shenyang, Liaoning, People's Republic of China. janetlee1976@126.com
authors.forename: Xi
authors.initials: X
authors.lastname: Wang
authors.forename: Hong-jun
authors.initials: HJ
authors.lastname: Zhang
authors.forename: Yong-sheng
authors.initials: YS
authors.lastname: Hu
authors.forename: Zhen-jiu
authors.initials: ZJ
authors.lastname: Zong
authors.forename: Ying-hui
authors.initials: YH
authors.lastname: Li
authors.forename: Chun-yi
authors.initials: CY
authors.lastname: Li
mesh_terms: D005260:Female; D056945:Hep G2 Cells; D006801:Humans; D008113:Liver Neoplasms / Q000473:pathology*; D008297:Male; D012333:RNA, Messenger / Q000032:analysis; D016212:Transforming Growth Factor beta / Q000502:physiology; D044767:Ubiquitin-Protein Ligases / Q000235:genetics / Q000502:physiology*
chemical_list: D012333:RNA, Messenger; D016212:Transforming Growth Factor beta; C498342:SMURF1 protein, human; D044767:Ubiquitin-Protein Ligases