Abstract
A rapidly growing body of information has suggested that NAD (including NAD and NADH) and NADP (including NADP and NADPH) could be new fundamental factors in cell death: Many studies have indicated key roles of poly (ADP-ribose) polymerases and sirtuins --- two families of NAD-dependent enzymes --- in cell death; and NAD may also affect cell survival by influencing mitochondrial permeability transition, apoptosis-inducing factor and GAPDH. NAD may further influence cell survival by its effects on calcium homeostasis, gene expression and immunological functions. Due to the crucial roles of oxidative stress in cell death, NADPH may mediate cell death by its major effects on oxidative stress: NADPH is a key factor in cellular antioxidation systems; and NADPH oxidase is also a major generator of oxidative stress. With growing information about the novel biological properties of NAD and NADP, it is likely that new roles of NAD and NADP in cell death and various diseases will be elucidated. The elucidation may not only improve our understanding about the fundamental mechanisms of cell death, but also suggest new therapeutic targets for a variety of diseases.
Keywords: NAD, NADP, cell death, oxidative stress, mitochondria
Current Pharmaceutical Design
Title: Roles of NAD / NADH and NADP+ / NADPH in Cell Death
Volume: 15 Issue: 1
Author(s): Weiliang Xia, Zheng Wang, Qing Wang, Jin Han, Cuiping Zhao, Yunyi Hong, Lili Zeng, Le Tang and Weihai Ying
Affiliation:
Keywords: NAD, NADP, cell death, oxidative stress, mitochondria
Abstract: A rapidly growing body of information has suggested that NAD (including NAD and NADH) and NADP (including NADP and NADPH) could be new fundamental factors in cell death: Many studies have indicated key roles of poly (ADP-ribose) polymerases and sirtuins --- two families of NAD-dependent enzymes --- in cell death; and NAD may also affect cell survival by influencing mitochondrial permeability transition, apoptosis-inducing factor and GAPDH. NAD may further influence cell survival by its effects on calcium homeostasis, gene expression and immunological functions. Due to the crucial roles of oxidative stress in cell death, NADPH may mediate cell death by its major effects on oxidative stress: NADPH is a key factor in cellular antioxidation systems; and NADPH oxidase is also a major generator of oxidative stress. With growing information about the novel biological properties of NAD and NADP, it is likely that new roles of NAD and NADP in cell death and various diseases will be elucidated. The elucidation may not only improve our understanding about the fundamental mechanisms of cell death, but also suggest new therapeutic targets for a variety of diseases.
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Cite this article as:
Xia Weiliang, Wang Zheng, Wang Qing, Han Jin, Zhao Cuiping, Hong Yunyi, Zeng Lili, Tang Le and Ying Weihai, Roles of NAD / NADH and NADP+ / NADPH in Cell Death, Current Pharmaceutical Design 2009; 15 (1) . https://dx.doi.org/10.2174/138161209787185832
DOI https://dx.doi.org/10.2174/138161209787185832 |
Print ISSN 1381-6128 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4286 |
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