Hepatocellular HO-1 mediated iNOS-induced hepatoprotection against liver ischemia reperfusion injury.

Hepatocellular HO-1 mediated iNOS-induced hepatoprotection against liver ischemia reperfusion injury.
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肝细胞 HO-1 介导 iNOS 诱导的肝保护作用,对抗肝脏缺血再灌注损伤。

DOI:
10.1016/j.bbrc.2019.11.053
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发表时间:
2019-11
期刊:
Biochem Biophys Res Commun
影响因子:
--
通讯作者:
Sun Jie
Sun Jie
中科院分区:
其他
文献类型:
--
作者:
Qiao Yingli;Xiao Fei;Li Wenkai;Yu Mingyong;Du Peng;Fang Zheping;Sun Jie

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在我们之前的分析中,肝细胞来源的诱导型一氧化氮合酶(iNOS)被证明对肝脏缺血再灌注(I/R)损伤具有保护作用。然而,这种保护肝脏的机制仍然不完全清楚。在iNOS敲除的背景下,以肝细胞选择性方式表达iNOS生成骨髓嵌合小鼠。在体外和体内分别探讨血红素加氧酶1 (HO-1)在inos刺激下的肝保护作用及其分子机制。肝细胞来源的iNOS对I/R损伤和缺氧/再氧化刺激具有保护作用。在机制上,iNOS激活核因子红系2相关因子2 (Nrf-2),随后刺激HO-1的转录。我们的研究结果表明,HO-1是肝脏I/R后inos介导的另一种有效的保护介质。
Hepatocyte-derived inducible nitric oxide synthase (iNOS) was proved to impart protection against liver ischemia reperfusion (I/R) injury in our prior analysis. However, the mechanism for this hepatoprotection remains incompletely understood. Bone marrow chimeric mice were generated using expression of iNOS in a hepatocyte-selective manner against an iNOS-knockout background. The function of heme oxygenase 1 (HO-1) in iNOS-stimulated hepatoprotection and the molecular mechanisms were explored in vitro and in vivo, respectively. Hepatocyte-derived iNOS conferred protection from I/R injury and anoxia/reoxygenation stimulation. Mechanistically, iNOS activated nuclear factor erythroid 2-related factor 2 (Nrf-2) and subsequently, stimulated the transcription of HO-1. Results from our study led to the conclusion that HO-1 is another potent mediator of iNOS-mediated protection after liver I/R.
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