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TRAIL介导的细胞凋亡与肝纤维化

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摘要 1996年,Pitti等从人胎盘cDNA文库中发现了一种与人细胞凋亡因子受体[FasL(Apo-1L)3很相似的肿瘤坏死因子(TNF)超家族成员,命名为Apo-2L,也称为TNF相关的凋亡诱导配体(TNF-related apoptosis-inducing ligand,TRAIL)。近年研究发现,在活化的肝星状细胞(hepatic stellate cell,HSC),表面TRAIL受体蛋白表达增加,且HSC对TRAIL介导的细胞凋亡敏感性也随之加强。正常HSC为静止型,其主要生理功能是摄取和储存维生索A;肝损伤后HSC激活为活化型,出现基因表达及细胞表型的改变,大量合成肝细胞外基质(extracelluar matrix,ECM)及分泌基质金属蛋白酶抑制剂(tissue inhibitor of metalloproteinase,TIMP),进而导致肝纤维化的发生发展。肝间质中的HSC是肝细胞外基质(extracellular matrix,ECM)的主要来源细胞,如何诱导和促进活化型HSC凋亡是目前治疗肝纤维化的热点。现就TRAIL、TRAIL受体与肝纤维化关系的研究进展概述如下。
出处 《福建医药杂志》 CAS 2006年第3期118-121,共4页 Fujian Medical Journal
基金 福建省科技计划项目(2001Z036) 福建省教育厅科研项目(JA03084)
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参考文献34

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