The dynamic regulation of NAD metabolism in mitochondria.

The dynamic regulation of NAD metabolism in mitochondria.
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DOI:
10.1016/j.tem.2012.06.005
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发表时间:
2012-09
影响因子:
10.9
通讯作者:
Imai, Shin-ichiro
Imai, Shin-ichiro
中科院分区:
医学1区
文献类型:
--
作者:
Stein, Liana Roberts;Imai, Shin-ichiro

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线粒体是产生ATP并为细胞能量代谢的多种功能的细胞内强力。尽管维持最佳的NAD/NADH比对于线粒体功能至关重要,但最近显然,线粒体NAD池的维护也至关重要。 NAD及其关键中间体的生物合成,运输和分解代谢在调节NAD消耗的介体(例如Sirtuins,Poly-ADP-ribose聚合酶)以及CD38/157的异位酶,在细胞内和细胞外裂缝中起着重要作用。线粒体NAD生物合成还针对营养和环境刺激进行了调节。在本文中,我们讨论了线粒体中NAD代谢的这种动态调节,以阐明NAD和线粒体功能之间的紧密联系。
Mitochondria are intracellular powerhouses that produce ATP and carry out diverse functions for cellular energy metabolism. While the maintenance of an optimal NAD/NADH ratio is essential for mitochondrial function, it has recently become apparent that the maintenance of the mitochondrial NAD pool also has critical importance. The biosynthesis, transport, and catabolism of NAD and its key intermediates play an important role in the regulation of NAD-consuming mediators, such as sirtuins, poly-ADP-ribose polymerases, and CD38/157 ectoenzymes, in intra- and extracellular compartments. Mitochondrial NAD biosynthesis is also modulated in response to nutritional and environmental stimuli. In this article, we discuss this dynamic regulation of NAD metabolism in mitochondria to shed light on the intimate connection between NAD and mitochondrial function.
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