The Effect of Nitrogen Monoxide on Intracellular Iron Metabolism
The Effect of Nitrogen Monoxide on Intracellular Iron Metabolism
批准号:
DP0773777
负责人:
Prof Des Richardson
金额:
$26.15万
依托单位:
依托单位国家:
澳大利亚
项目类别:
Discovery Projects
财政年份:
2007
资助国家:
澳大利亚
项目状态:
已结题
起止时间:
2007-08-01 至 2010-12-31
中文摘要
我们第一次发现,一氧化氮(NO)是通过一种已知也运输谷胱甘肽(GSH)的蛋白质从细胞中主动运输的。这很重要,因为一氧化氮被认为是被动地从细胞中扩散。主动运输克服了扩散的低效和无针对性的问题。此外,一氧化氮作为铁和谷胱甘肽的络合物释放,显著增加其半衰期。这些发现对于理解一氧化氮在许多具有重要健康意义的过程中的活性具有广泛的意义,包括巨噬细胞杀死肿瘤细胞,血压等。
英文摘要
For the first time, we discovered that nitric oxide (NO) is actively transported from cells by a protein that is known to also transport glutathione (GSH). This is important, as NO was thought to passively diffuse from cells. Active transport overcomes the problems of diffusion which is inefficient and non-targeted. Moreover, NO is released as a complex with iron and GSH which markedly increases its half-life. These findings have broad implications for understanding the activity of NO in many processes which have major health implications, including tumour cell killing by macrophages, blood pressure etc.
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