Expression of Bcl—2 inhibited Fas—mediated apoptosis in human hepatocellular carcinoma BEL—7404 cells

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摘要 Apoptosisplaysanimportantroleinembryonicdevelopment,tissueremodeling,immuneregulationandtumorregression.Twogroupsofmolecules(Bcl-2familyand“Deathfactor”family)areinvolvedinregulatingapoptosis.InordertoknowabouttheeffectofBcl-2onapoptosisinducedbyFas,atypicalmemberof“Deathfactor”family,thetransfectionexperimentswithexpressionvectorspcDNA3-flandpcDNA3-bcl-2wereperformedinBEL-7404cells,ahumanhepatocellularcarcinomacelllinewhichexpressesendogenousFas,butnotFasLandBcl-2.ThedatashowedthattheexpressionofFasLinpcDNA3-fltransfectedhepatomacellsobviouslyinducedtheapoptosisofthecells.However,theoverexpressionofBcl-2inpcDNA3-bcl-2transfected7404/b-16cellscounteractedpcDNA3-fltransienttransfectionmediatedapoptosis.FurtherstudybycotransfectionexperimentsindicatedthatBidbutnotBax(bothwerepro-apoptoticproteinsofBcl-2family)blockedtheinhibitoryeffectofBcl-2onFas-mediatedapoptosis.TheseresultssuggestedthatFas-mediatedapoptosisinhumanhepatomacellsispossiblyregulatedbyBcl-2familyproteinsviamitochondriapathway.
机构地区 不详
出处 《细胞研究:英文版》 2000年3期
出版日期 2000年03月13日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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