title: Effect of the venom of the spider Macrothele raveni on the expression of p21 gene in HepG2 cells.
abstract: This paper focuses on the effect of the venom of the spider Macrothele raveni on the proliferation of human hepatocelluar carcinoma cell line HepG2 and the related molecular mechanism. XTT test showed that the proliferation of HepG2 cells in vitro was inhibited by the spider venom (P<0.05) in a concentration-dependent manner. By using flow cytometry, it was found that the spider venom caused selective G(2)/M cell cycle arrest in HepG2 cells. RT-PCR and Western blot indicated the expressions of p21 mRNA and protein in HepG2 cells were obviously up-regulated by the spider venom. The venom of the spider Macrothele raveni inhibited the proliferation of HepG2 cells. These results suggest that the possible mechanism of the spider venom is to activate the expressions of p21 gene and protein and to cause selective cell cycle arrest at G(2)/M phase, leading to HepG2 cell apoptosis.
authors.affiliation: College of Life Science, Hebei Normal University, Shijiazhuang 050016, China. ligao0823@163.com
authors.forename: Li
authors.initials: L
authors.lastname: Gao
authors.forename: Jin-Bao
authors.initials: JB
authors.lastname: Shen
authors.forename: Jie
authors.initials: J
authors.lastname: Sun
authors.forename: Bao-En
authors.initials: BE
authors.lastname: Shan
mesh_terms: D002453:Cell Cycle / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects*; D050759:Cyclin-Dependent Kinase Inhibitor p21 / Q000235:genetics / Q000378:metabolism*; D056945:Hep G2 Cells; D006801:Humans; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D013111:Spider Venoms / Q000494:pharmacology*
chemical_list: C493956:CDKN1A protein, human; D050759:Cyclin-Dependent Kinase Inhibitor p21; D012333:RNA, Messenger; D013111:Spider Venoms