摘 要: | TransforminggrowthFactor-BetaI(TGF-0,)isanimportantnegativemediatoroflivercellproliferationandreplication.[1]ThreecellsurfaceproteinshavebeenidentifiedaccordingtotheirabilitytobindwithhighaffinitytoTGF-β1:typeI(55kd),type11(80kd),typeill(280kd)receptors.TypeII,possiblyinconjunctionwithtypeI,isthoughttobethereceptormediatingthesignaltransductionofgrowthinhibition.[2]BecausesometumorcelllinesandcertainhumancarcinomashavefewornoTGF-6,receptors,[3-6]weexploredandcomparedTGF-β1typeIIrecep…
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