首页> 外文期刊>Cellular immunology >Importance of lipid rafts for lysophosphatidylcholine-induced caspase-1 activation and reactive oxygen species generation.
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Importance of lipid rafts for lysophosphatidylcholine-induced caspase-1 activation and reactive oxygen species generation.

机译:脂筏对溶血磷脂酰胆碱诱导的caspase-1活化和活性氧生成的重要性。

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摘要

Lipid rafts play an important role in regulating cellular processes and functions. Here, we demonstrate that in microglia stimulated with the pro-inflammatory lipid lysophosphatidylcholine (LPC), caspase-1 activation and NADPH oxidase activity depend on intact lipid rafts. Disruption of lipid rafts with methyl-beta-cyclodextrin, fumonisin B1 or nystatin prevented LPC-stimulated caspase-1 activation and reactive oxygen species (ROS) production, whereas LPC-induced Na(+) influx remained unaffected. Since ROS regulate caspase-1 activity in LPC-stimulated microglia, the effects of lipid raft-disrupting agents on caspase-1 activation can be related to their inhibition of NADPH oxidase-mediated ROS production.
机译:脂质筏在调节细胞过程和功能中起重要作用。在这里,我们证明在由促炎性脂质溶血磷脂酰胆碱(LPC)刺激的小胶质细胞中,caspase-1活化和NADPH氧化酶活性取决于完整的脂质筏。与甲基-β-环糊精,伏马菌素B1或制霉菌素的脂筏的破坏阻止了LPC刺激的caspase-1激活和活性氧(ROS)的产生,而LPC诱导的Na(+)流入仍不受影响。由于ROS调节LPC刺激的小胶质细胞中caspase-1的活性,因此脂筏破坏剂对caspase-1活化的影响可能与其抑制NADPH氧化酶介导的ROS产生有关。

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