Cellular magnesium homeostasis.

Cellular magnesium homeostasis.
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DOI:
10.1016/j.abb.2011.05.010
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发表时间:
2011-08-01
影响因子:
3.9
通讯作者:
Romani, Andrea M. P.
Romani, Andrea M. P.
中科院分区:
生物学3区
文献类型:
--
作者:
Romani, Andrea M. P.

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镁是仅次于钾的第二丰富的细胞阳离子,对于调节许多细胞功能和酶是必不可少的,包括离子通道,代谢周期和信号传导途径,如文献中1000多个条目所证明的。尽管最近取得了重大进展,但是,我们对细胞如何调节Mg 2+稳态和运输的理解仍然不完整。例如,在代谢或激素刺激后,哺乳动物细胞质膜上发生的Mg2+主要通量已被广泛记录。然而,最终负责镁挤出穿过细胞膜的机制尚未被克隆。对细胞器中的调节知之甚少。本综述旨在为读者提供一个全面的和最新的了解真核细胞制定的机制,以调节细胞Mg 2+稳态,以及这些机制是如何在特定的病理条件下改变。
Magnesium, the second most abundant cellular cation after potassium, is essential to regulate numerous cellular functions and enzymes, including ion channels, metabolic cycles, and signaling pathways, as attested by more than 1000 entries in the literature. Despite significant recent progress, however, our understanding of how cells regulate Mg2+ homeostasis and transport still remains incomplete. For example, the occurrence of major fluxes of Mg2+ in either direction across the plasma membrane of mammalian cells following metabolic or hormonal stimuli has been extensively documented. Yet, the mechanisms ultimately responsible for magnesium extrusion across the cell membrane have not been cloned. Even less is known about the regulation in cellular organelles. The present review is aimed at providing the reader with a comprehensive and up-to-date understanding of the mechanisms enacted by eukaryotic cells to regulate cellular Mg2+ homeostasis and how these mechanisms are altered under specific pathological conditions.
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