K+和Ca2+通透性离子通道调控血管干细胞作用的研究进展

Research advances in K+ and Ca2+ permeable ion channels in regulation of vascular resident stem cells

  • 摘要: 干细胞具有自我更新和多向分化潜能,参与维持机体稳态、组织修复和再生过程。近年来研究发现血管上存在多种不同类型的血管干细胞,被特定条件激活可分化为内皮细胞和平滑肌细胞,参与血管损伤后修复和结构功能重塑。离子通道是生物电信号产生的基础,是细胞与周围环境进行物质交换和信息交流的门户,在维持细胞正常形态和功能调控中发挥重要作用。但目前对血管干细胞离子通道的研究相对较少。K+和Ca2+是细胞内的重要信号分子,通透K+和Ca2+的离子通道协调调控生理和病理状态下血管的舒缩活性和功能重构。最新研究表明,这些离子通道参与调控干细胞的增殖、迁移和分化,预示其在血管干细胞的生物学活性调控中具有潜在作用。本文将对血管上主要分布的可通透K+和Ca2+的离子通道在干细胞中作用的研究进展进行综述,揭示这些离子通道对干细胞生物学活性调控的作用机制,进一步探讨在血管干细胞的增殖、迁移和分化过程中这些离子通道的结构重塑和电重塑机制,为心血管疾病的防治和靶向性药物的研发提供参考。

     

    Abstract: Stem cells have the potential of self-renewal and multidirectional differentiation and are involved in homeostasis and tissue repair. Recently, numerous studies have consistently demonstrated that a variety of stem/progenitor cells are resident in vascular wall, which can differentiate into endothelial cells and smooth muscle cells once being activated, and participate in structural and functional remodeling after vascular injury. Ion channels are the basis for the generation of bioelectrical signals and contribute to the substance information exchange between cells and the surrounding environment, and they play important roles in the proliferation, migration, and differentiation of various cells. However, there are relatively few studies on ion channels of vascular resident stem cells. It is well known that K + and Ca2 + are important signaling molecules, and the K + and Ca2 + permeable ion channels synergically contribute to maintaining normal cell function. Recent studies suggest that these ion channels participate in the regulation of proliferation, migration, and differentiation of stem cells, indicating their potential function in vascular resident stem cells. This review summarizes the recent progress in the mainly distributed K + and Ca2 + permeable ion channels in blood vessels, and the potential role of these ion channels in the regulation of the biological activities of vascular stem cells, to pave the way for further exploring the structural and electrophysiological remodeling mechanism, as well as the prevention and treatment of cardiovascular diseases and the development of ion channel-targeted drugs.

     

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