title: Zoledronic acid inhibits growth of hepatocellular carcinoma cells in vitro and in vivo.
abstract: BACKGROUND
  Growing preclinical evidence shows that zoledronic acid (ZOL) exhibits direct antitumor activity in various cancer cell lines. However, the cytotoxic effects of ZOL on human hepatocellular carcinoma (HCC) cells have not been established. In the present study, we investigated the effect of ZOL on HCC both in vitro and in vivo.
  
  
  METHODS
  Cytotoxicity and cell cycles were assessed with Sulforhodamine B colorimetric assay and flow cytometry. Expression levels of cell cycle phase-linked proteins were examined. The effect of ZOL on HCC in vivo was explored based on H22-subcutaneous injection (s.c.) and H22-intraperitoneal injection (i.p.) mice model.
  
  
  RESULTS
  ZOL inhibited the growth of SK-HEP-1 and H22 cells and induced S-phase arrest through downregulating cdc2 protein and upregulating cyclin A. It inhibited the growth of s.c tumors, and increased the survival of both H22-s.c. and H22-i.p. mice in vivo.
  
  
  CONCLUSIONS
  ZOL inhibits growth of HCC cells in vitro and in vivo.
authors.affiliation: Oncology Institute, the Fourth Affiliated Hospital of Soochow University, Wuxi, Jiangsu 214062, China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Liu
authors.forename: Yong-hui
authors.initials: YH
authors.lastname: Tao
authors.forename: Rui-zhen
authors.initials: RZ
authors.lastname: Bai
authors.forename: Shu-jian
authors.initials: SJ
authors.lastname: Chang
authors.forename: Dong
authors.initials: D
authors.lastname: Hua
mesh_terms: D000818:Animals; D006528:Carcinoma, Hepatocellular / Q000188:drug therapy* / Q000473:pathology; D002453:Cell Cycle / Q000187:drug effects; D045744:Cell Line, Tumor; D004164:Diphosphonates / Q000494:pharmacology / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007093:Imidazoles / Q000494:pharmacology / Q000627:therapeutic use*; D008113:Liver Neoplasms / Q000188:drug therapy* / Q000473:pathology; D051379:Mice; D023041:Xenograft Model Antitumor Assays; D000077211:Zoledronic Acid
chemical_list: D004164:Diphosphonates; D007093:Imidazoles; D000077211:Zoledronic Acid