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J Hepatology: 半胱天冬酶8的失活可以预防阻塞性胆汁淤积

2018-11-25 MedSci MedSci原创

Caspase 8(CASP8)是死亡受体介导的细胞凋亡中的顶端启动子半胱天冬酶。最近有文献指出死亡受体信号传导途径与胆汁淤积之间存在联系。在本文中,研究人员研究了CASP8在治疗实验性胆汁淤积中的作用。

背景与目的
Caspase 8(CASP8)是死亡受体介导的细胞凋亡中的顶端启动子半胱天冬酶。最近有文献指出死亡受体信号传导途径与胆汁淤积之间存在联系。在本文中,研究人员研究了CASP8在治疗实验性胆汁淤积中的作用。

方法
研究人员招募了28名患有IV期原发性胆汁性胆管炎的患者进行组织活检并进行血清学检查,并制作了CASP8缺失模型小鼠,对小鼠进行胆总管的手术结扎(BDL )2至28天。此外,使用泛半胱天冬酶抑制剂IDN-7314,并且在原代分离的肝细胞中研究细胞死亡机制。

结果
过表达活化的caspase 8(CASP8)和RIPK3是原发性胆汁性胆管炎患者肝脏的特征。BDL后二十八天,CASP8小鼠表现出与减少代偿增生和胆小管反应而减少坏死灶,血清转氨酶水平和细胞凋亡。这些结果与炎症特征的减少和改善的肝纤维化相关。

结论
这些研究结果表明,肝实质细胞 - 特别是胆管细胞 - 对CASP8的干预可能是治疗阻塞性胆汁淤积的有益选择,而广泛的泛半胱天冬酶抑制可能引发副作用。

原始出处:

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    2019-03-01 tomyang96
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    2018-11-27 gwc384
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