The evolution of organellar calcium mapping technologies.

The evolution of organellar calcium mapping technologies.
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DOI:
10.1016/j.ceca.2022.102658
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发表时间:
2022-12
期刊:
影响因子:
4
通讯作者:
Krishnan, Yamuna
Krishnan, Yamuna
中科院分区:
生物学2区
文献类型:
--
作者:
Zajac, Matthew;Modi, Souvik;Krishnan, Yamuna

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细胞内 Ca2+ 通量由多个细胞器储存的 Ca2+ 库的共同参与动态控制。内溶酶体正在成为细胞内 Ca2+ 的重要生理学来源和汇,但尚未得到充分研究。描述细胞器在 Ca2+ 信号传导中的作用依赖于化学荧光探针和电生理学策略。然而,酸性内溶酶体环境存在独特的问题,这妨碍了使用传统的化学报告策略来绘制腔内 Ca2+。在这里,我们简要讨论了我们目前对细胞器 Ca2+ 库的了解的要点。然后我们概述了传统探针的发展及其传感范例。然后,我们讨论新一代探针如何克服传统 Ca2+ 探针的局限性,以及它们如何提供对内溶酶体 Ca2+ 及其与其他细胞器的反馈的重要见解。
Intracellular Ca2+ fluxes are dynamically controlled by the co-involvement of multiple organellar pools of stored Ca2+. Endolysosomes are emerging as physiologically critical, yet underexplored, sources and sinks of intracellular Ca2+. Delineating the role of organelles in Ca2+ signalling has relied on chemical fluorescent probes and electrophysiological strategies. However, the acidic endolysosomal environment presents unique issues, which preclude the use of traditional chemical reporter strategies to map lumenal Ca2+. Here, we succinctly discuss the main points in our current state of knowledge about organellar Ca2+ pools. We then outline the development of traditional probes, and their sensing paradigms. We then discuss how a new generation of probes overcomes the limitations of traditional Ca2+ probes and how they can offer critical insights into endolysosomal Ca2+, and its feedback with other organelles.
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