Redox Biol:动脉粥样硬化与Asm基因和神经酰胺MR聚集相关

2017-07-04 Emma MedSci原创

NLRP3炎症小体的激活和调节在动脉粥样硬化中有着重要的作用,研究报道,动脉粥样化因子能够激活NLRP3炎症小体,引起内皮损伤,触发动脉壁动脉粥样硬化病变。发表于Redox Biol的一篇文章中,研究人员利用小鼠作为研究模型,探究ASM(acid sphingomyelinase,酸性鞘磷脂酶)以及神经酰胺相关MR(膜筏)信号转导平台是否与高胆固醇血症中NLRP3炎症小体的激活和动脉粥样硬化有关。

NLRP3炎症小体的激活和调节在动脉粥样硬化中有着重要的作用,研究报道,动脉粥样化因子能够激活NLRP3炎症小体,引起内皮损伤,触发动脉壁动脉粥样硬化病变。发表于Redox Biol的一篇文章中,研究人员利用小鼠作为研究模型,探究ASM(acid sphingomyelinase,酸性鞘磷脂酶)以及神经酰胺相关MR(膜筏)信号转导平台是否与高胆固醇血症中NLRP3炎症小体的激活和动脉粥样硬化有关。结果显示,7-Keto(7-酮胆固醇)或ChC(胆固醇晶体)显著增加了CAEC(小鼠颈动脉内皮细胞)中NLRP3炎症细胞的形成和活化。NLRP3和ASC及caspase-1的共定位显示, Asm siRNA、ASM抑制剂amitriptyline和Asm基因的缺失能显著减弱caspase-1活性的增强和IL-1β水平的提高。在有NLRP3炎症小体形成的CAEC中,CTXB(MR标记物)和gp91phox聚集显示NADPH氧化酶亚基的MR(膜筏)聚集显著增加,表明MR氧化还原信号转导平台形成。而这种MR聚集能被MCD(MR干扰物)、Tempol(ROS清除剂)和verapamil(TXNIP抑制

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    2017-10-31 sunylz
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    2017-07-06 xugc
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    2017-07-05 往日如昨

    学习了谢谢分享

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