title: [Effect of livin gene suppression by genistein on apoptosis, cell cycle and proliferation of malignant melanoma LiBr cells].
abstract: OBJECTIVE
  To observe the effect of livin gene suppression by genistein on apoptosis, cell cycle and proliferation of malignant melanoma LiBr cells.
  
  
  METHODS
  RT-PCR was used to detect the expression of livin mRNA in LiBr cells 48 h after treatment with 40 µmol/L genistein. Flow cytometry with annexin V-FITC/PI double staining was employed to detect cell apoptosis, and the caspase-3 protein expression in the cells following genistein treatment was assayed using Western blotting. The changes in the cell cycle and proliferation of the cells after genistein treatment were examined with flow cytometry with PI staining and MTT colorimetric assay, respectively.
  
  
  RESULTS
  Genistein can suppress the expression of Livin Gene (87.94% with 40 µmol/L genistein) and induce the apoptosis of LiBr effectively, both in the early and late phases (27.87∓5.38% and 11.87∓3.86% respectively). LiBr cells in phase G(0)/G(1) increases notably(G(0)/G(1)=72.11∓5.89%,S=14.53∓3.47%,G(2)/M=12.36∓2.64%). Genistein significantly reduced caspase-3 protein expression and inhibit cell proliferation.
  
  
  CONCLUSIONS
  Genistein can suppress Livin Gene expression, induce LiBr cell apoptosis, hinder cell generation cycle, restrain cell proliferation.
authors.affiliation: Graduate School of Ningxia Medical University, Yinchuan, China. yyfwjw@126.com
authors.forename: Yifei
authors.initials: Y
authors.lastname: Yang
authors.forename: Hao
authors.initials: H
authors.lastname: Wang
authors.forename: Jingxia
authors.initials: J
authors.lastname: Wang
authors.forename: Xianghua
authors.initials: X
authors.lastname: Li
authors.forename: Mei
authors.initials: M
authors.lastname: Ma
authors.forename: Wenbin
authors.initials: W
authors.lastname: Yang
mesh_terms: D048868:Adaptor Proteins, Signal Transducing / Q000235:genetics*; D017209:Apoptosis / Q000187:drug effects*; D002453:Cell Cycle / Q000187:drug effects*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D019833:Genistein / Q000494:pharmacology*; D006801:Humans; D051034:Inhibitor of Apoptosis Proteins / Q000235:genetics*; D008545:Melanoma / Q000473:pathology*; D009363:Neoplasm Proteins / Q000235:genetics*
chemical_list: D048868:Adaptor Proteins, Signal Transducing; C419866:BIRC7 protein, human; D051034:Inhibitor of Apoptosis Proteins; D009363:Neoplasm Proteins; D019833:Genistein