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Updated: Jan 28, 2026

Simultaneous Measurement of Mitochondrial Calcium and Mitochondrial Membrane Potential in Live Cells by Fluorescent Microscopy
Published on: January 24, 2017
Progress in understanding mitochondrial calcium uniporter complex-mediated calcium signalling: A potential target for
Chaochu Cui1,2,3, Jianbo Yang1, Liwu Fu3
1Henan Key Laboratory of Medical Tissue Regeneration, College of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China.
Abstract:
Due to its Ca2+ buffering capacity, the mitochondrion is one of the most important intracellular organelles in regulating Ca2+ dynamic oscillation. Mitochondrial calcium uniporter (MCU) is the primary mediator of Ca2+ influx into mitochondria, manipulating cell energy metabolism, ROS production, and programmed cell death, all of which are critical for carcinogenesis. The understanding of the uniporter complex was significantly boosted by recent groundbreaking discoveries that identified the uniporter pore-forming subunit MCU and its regulatory molecules, including MCU-dominant negative β subunit (MCUb), essential MCU regulator (EMRE), MCU regulator 1 (MCUR1), mitochondrial calcium uptake (MICU) 1, MICU2, and MICU3. These provide the means and molecular platform to investigate MCU complex (uniplex)-mediated impaired Ca2+ signalling in physiology and pathology. This review aims to summarize the progress of the understanding regulatory mechanisms of uniplex, roles of uniplex-mediated Ca2+ signalling in cancer, and potential pharmacological inhibitors of MCU.
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