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      Calcium and apoptosis: ER-mitochondria Ca2+ transfer in the control of apoptosis.

      Oncogene

      Animals, Apoptosis, physiology, Calcium, metabolism, Cytosol, Humans, Endoplasmic Reticulum

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          Abstract

          There is a growing consensus that the various forms of cell death (necrosis, apoptosis and autophagy) are not separated by strict boundaries, but rather share molecular effectors and signaling routes. Among the latter, a clear role is played by calcium (Ca(2+)), the ubiquitous second messenger involved in the control of a broad variety of physiological events. Fine tuning of intracellular Ca(2+) homeostasis by anti- and proapoptotic proteins shapes the Ca(2+) signal to which mitochondria and other cellular effectors are exposed, and hence the efficiency of various cell death inducers. Here, we will review: (i) the evidence linking calcium homeostasis to the regulation of apoptotic, and more recently autophagic cell death, (ii) the discussion of mitochondria as a critical, although not unique checkpoint and (iii) the molecular and functional elucidation of ER/mitochondria contacts, corresponding to the mitochondria-associated membrane (MAM) subfraction and proposed to be a specialized signaling microdomain.

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          Author and article information

          Journal
          18955969
          2844952
          10.1038/onc.2008.308

          Chemistry

          Animals, Apoptosis, physiology, Calcium, metabolism, Cytosol, Humans, Endoplasmic Reticulum

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