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首页> 外文期刊>Acta Biochimica Polonica >Metal responsive transcription factor 1 (MTF-1) regulates zinc dependent cellular processes at the molecular level
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Metal responsive transcription factor 1 (MTF-1) regulates zinc dependent cellular processes at the molecular level

机译:金属响应转录因子1(MTF-1)在分子水平上调节锌依赖性细胞过程

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摘要

Metal responsive transcription factor 1 (MTF-1) is a zinc dependent transcription factor which is involved in the regulation of intracellular signaling pathways. MTF-1 regulates the expression of two streams of genes functioning in metal homeostasis and anti-oxidative response. MTF-1 acts in the process of binding of toxic metal ions in the cell, due to the activation of the expression of metallothioneins (MTs). Additionally, MTF-1 regulates transcription of genes involved in the sequestration of zinc and its intracellular transport. Disruption of zinc and MT homeostasis has an indispensable influence on the development of several pathological states. Moreover, by increasing MT activity, MTF-1 can effectively protect cells from oxidative and hypoxic stresses. The mechanism of MTF-1 action in cells includes the regulation of the proper immune response through activation/repression of anti-and pro-inflammatory cytokines. MTF-1 function in immune response is related to nuclear factor-kappa B (NF-kappa B) activity. Synthesis of insulin is also related to the activity of this transcription factor and zinc balance. Insulin transport also depends on zinc. In pancreatic A-cells, several types of the zinc transporters are found. Zinc transporters coordinated action is crucial for the synthesis and secretion of insulin. Disturbances in the regulation of signaling pathways connected with MTF-1 function can entail further alterations in zinc intracellular status and this growing imbalance can promote the pathophysiology of degenerative disorders.
机译:金属响应转录因子1(MTF-1)是锌依赖性转录因子,参与细胞内信号传导途径的调控。 MTF-1调节在金属稳态和抗氧化反应中起作用的两个基因流的表达。由于金属硫蛋白(MTs)表达的激活,MTF-1在细胞中有毒金属离子的结合过程中起作用。另外,MTF-1调节与锌螯合及其细胞内转运有关的基因的转录。锌和MT稳态的破坏对几种病理状态的发展有着不可或缺的影响。此外,通过增加MT活性,MTF-1可以有效保护细胞免受氧化和低氧应激。细胞中MTF-1的作用机制包括通过激活/抑制抗炎和促炎性细胞因子来调节适当的免疫反应。 MTF-1在免疫应答中的功能与核因子-κB(NF-κB)活性有关。胰岛素的合成也与该转录因子的活性和锌平衡有关。胰岛素的运输也依赖锌。在胰腺A细胞中,发现了几种类型的锌转运蛋白。锌转运蛋白的协调作用对于胰岛素的合成和分泌至关重要。与MTF-1功能相关的信号通路调控中的干扰可能会导致锌细胞内状态的进一步改变,这种不断增长的失衡会促进退行性疾病的病理生理。

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