The Role of pH(i) in Intestinal Epithelial Proliferation-Transport Mechanisms, Regulatory Pathways, and Consequences.

The Role of pH(i) in Intestinal Epithelial Proliferation-Transport Mechanisms, Regulatory Pathways, and Consequences.
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pH(i)在肠上皮增殖传输机制,调节途径和后果中的作用。

DOI:
10.3389/fcell.2021.618135
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发表时间:
2021
影响因子:
5.5
通讯作者:
Nikolovska K
Nikolovska K
中科院分区:
生物学2区
文献类型:
--
作者:
Amiri M;Seidler UE;Nikolovska K

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在肠上皮细胞沿隐窝/表面轴的成熟过程中,大量酸/碱转运蛋白在其顶端和底外侧膜上差异表达,从而实现电解质、大分子、营养物质、酸/碱和液体的分泌和吸收过程。细胞内pH (pHi)梯度沿着上皮隐窝/表面轴产生,这可能是离子运输活动总和的结果,也可能是一个明显受调节的实体。虽然pHi在癌细胞中的增殖、迁移和肿瘤发生中的作用已经被探索了一段时间,但新的证据表明,在生理条件下,pHi在肠干细胞(ISCs)的增殖率中起着重要作用。本文综述了目前关于pHi对肠道增殖和分化的潜在调节作用的研究现状。
During the maturation of intestinal epithelial cells along the crypt/surface axis, a multitude of acid/base transporters are differentially expressed in their apical and basolateral membranes, enabling processes of electrolyte, macromolecule, nutrient, acid/base and fluid secretion, and absorption. An intracellular pH (pHi)-gradient is generated along the epithelial crypt/surface axis, either as a consequence of the sum of the ion transport activities or as a distinctly regulated entity. While the role of pHi on proliferation, migration, and tumorigenesis has been explored in cancer cells for some time, emerging evidence suggests an important role of the pHi in the intestinal stem cells (ISCs) proliferative rate under physiological conditions. The present review highlights the current state of knowledge about the potential regulatory role of pHi on intestinal proliferation and differentiation.
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