Sirtuin-4 modulates sensitivity to induction of the mitochondrial permeability transition pore.

Sirtuin-4 modulates sensitivity to induction of the mitochondrial permeability transition pore.
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SIRTUIN-4调节对线粒体通透性过渡孔的敏感性。

DOI:
10.1016/j.bbabio.2012.09.016
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发表时间:
2013-01
影响因子:
4.3
通讯作者:
Pastorino, John G.
Pastorino, John G.
中科院分区:
生物学2区
文献类型:
--
作者:
Verma, Manish;Shulga, Nataly;Pastorino, John G.

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线粒体通透性过渡孔(PTP)的持续开放是不可逆细胞损伤发生的决定性事件。PTP受多种外源性和内源性效应物调节,包括线粒体膜电位、离子和代谢物。线粒体sirtuins最近被认为是线粒体代谢的关键介质。在本研究中,我们证明sirt-4调节对钙和氧化交联试剂苯larsin氧化物诱导的PTP发病的敏感性,以及TNF或阿霉素引起的PTP依赖性细胞毒性。此外,sirt-4调节PTP发病的能力依赖于谷氨酸脱氢酶-1的表达。
The sustained opening of the mitochondrial permeability transition pore (PTP) is a decisive event in the onset of irreversible cell injury. The PTP is modulated by numerous exogenous and endogenous effectors, including mitochondrial membrane potential, ions and metabolites. Mitochondrial sirtuins have recently emerged as pivotal mediators of mitochondrial metabolism. In the present study, we demonstrate that sirt-4 modulates sensitivity to PTP onset induced by calcium and the oxidative cross linking reagent phenylarsine oxide, and PTP dependent cytotoxicity brought about by TNF or doxorubicin. Moreover, the ability of sirt-4 to modulate onset of the PTP is dependent on the expression of glutamate dehydrogenase-1.
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发表时间: 2008-11-15
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