Mitochondria, calcium homeostasis and calcium signaling

   


1. Yanka Kupala Grodno State University, Grodno, Belarus
Type:
DOI: 10.18097/PBMC20166203311      UDK: 577.352      PubMed Id: 27420625
Year: 2016 vol: 62  issue:3  pages: 311-317
Abstract: Са2+ is a very important and versatile intracellular signal which controls numerous biochemical and physiological (pathophysiological) processes in the cell. Good evidence exists that mitochondria are sensors, decoders and regulators of calcium signaling. Precise regulation of calcium signaling in the cell involves numerous molecular targets, which induce and decode changes of Са2+ concentrations in the cell (pumps, channels, Са2+-binding proteins, Са2+-dependent enzymes, localized in the cytoplasm and organelles). Mitochondrial Са2+ uniporter accumulates excess of Са2+ in mitochondria, while Na+/Са2+- and H+/Са2+-antiporters extrude Са2+ in the cytoplasm. Mitochondrial Са2+ overloading results in formation of mitochondria permeability transition pores which play an important role in cell death under many pathological conditions. Mitochondria regulate Са2+ homeostasis and control important cellular functions such as metabolism, proliferation, survival. Identification of cellular and mitochondrial Ca2+ transporters and understanding their functional mechanisms open up new prospects for their using as therapeutic targets
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Reference: Zavodnik I.B., Mitochondria, calcium homeostasis and calcium signaling, Biomeditsinskaya khimiya, 2016, vol: 62(3), 311-317.
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