Zinc, insulin, and the liver: a ménage à trois.

Zinc, insulin, and the liver: a ménage à trois.
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锌、胰岛素和肝脏:三位一体。

DOI:
10.1172/jci72325
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发表时间:
2013
期刊:
The Journal of clinical investigation
影响因子:
--
通讯作者:
A. Attie
A. Attie
中科院分区:
--
文献类型:
--
作者:
T. O’Halloran;M. Kebede;Steven J. Philips;A. Attie

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胰岛素和Zn2+具有多价关系。Zn2+与胰腺β细胞中的胰岛素结合,在致密核心囊泡(DCVs)中形成结晶聚集体,并在血糖升高等生理信号的响应中释放出来。这种过渡金属是胰岛素降解酶和β细胞发育和胰岛素基因表达所需的几个关键Zn2+手指转录因子的重要辅助因子。越来越多的研究表明,Zn2+浓度的波动可以介导信号事件,包括超越静态结构或催化辅助因子的动态作用。在这一期的JCI中,Tamaki等人提出了Zn2+与胰岛素相关的另一个功能:调节胰岛素从血液中的清除。
Insulin and Zn2+ enjoy a multivalent relationship. Zn2+ binds insulin in pancreatic β cells to form crystalline aggregates in dense core vesicles (DCVs), which are released in response to physiological signals such as increased blood glucose. This transition metal is an essential cofactor in insulin-degrading enzyme and several key Zn2+ finger transcription factors that are required for β cell development and insulin gene expression. Studies are increasingly revealing that fluctuations in Zn2+ concentration can mediate signaling events, including dynamic roles that extend beyond that of a static structural or catalytic cofactor. In this issue of the JCI, Tamaki et al. propose an additional function for Zn2+ in relation to insulin: regulation of insulin clearance from the bloodstream.
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发表时间: 2009-07-15
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影响因子: --
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