Circulation:炎症通路可作为心律失常性心肌病的治疗靶点

2019-11-03 QQY MedSci原创

炎症是心律失常性心肌病(ACM)的一个显著特征,但目前尚不明确其是否与ACM的表型有关。为了探索炎症在ACM发病机制中的作用,Chelko等人在体内外的ACM模型和患者诱导多能干细胞来源的心肌细胞中研究核因子-κB信号特征。在ACM的一个体外模型(表达JUP215del2的新生大鼠心室肌细胞)和ACM的小鼠模型(desmoglein-2基因上纯合敲入突变[Dsg2mut/mut])中,核因子-κB

炎症是心律失常性心肌病(ACM)的一个显著特征,但目前尚不明确其是否与ACM的表型有关。

为了探索炎症在ACM发病机制中的作用,Chelko等人在体内外的ACM模型和患者诱导多能干细胞来源的心肌细胞中研究核因子-κB信号特征。

在ACM的一个体外模型(表达JUP215del2的新生大鼠心室肌细胞)和ACM的小鼠模型(desmoglein-2基因上纯合敲入突变[Dsg2mut/mut])中,核因子-κB信号被激活,可见磷酸化的RelA/p65表达增多并在核内积累。Bay 11-7082,核因子-κB信号的一种小分子抑制剂,可预防体外模型上的ACM疾病的特征发展(间盘蛋白异常再分布、肌细胞凋亡、炎性细胞因子释放)。Dsg2mut/mut小鼠心脏中的炎性细胞因子和趋化分子的表达显著升高,可被Bay 11-7082缓解。ACM患者来源的心肌细胞的核因子-κB信号也被激活。这些细胞在基础条件下产生和分泌大量的炎性细胞因子,而Bay 11-7082可大大减少炎性细胞因子的分泌。

在ACM中,炎症信号被激活,驱动疾病特征发展。以炎症通路为靶点可能是治疗ACM的一种新的有效机制。

原始出处:

Stephen P. Chelko, et al.Therapeutic Modulation of the Immune Response in Arrhythmogenic Cardiomyopathy.Circulation. 2019;140:1491–1505

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    2019-11-03 李时珍叫你去吃屎

    之前一直考虑炎症与动脉粥样硬化的关系,确实没考虑过炎症与心律失常的关系

    0

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    2019-11-03 yjs木玉

    好好好好好好

    0

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