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Publication Detail
Interplay between mitochondria and cellular calcium signalling
  • Publication Type:
    Journal article
  • Publication Sub Type:
  • Authors:
    Jacobson J, Duchen MR
  • Publication date:
  • Pagination:
    209, 218
  • Journal:
    Molecular and Cellular Biochemistry
  • Volume:
  • Issue:
  • Status:
  • Print ISSN:
Mitochondria are increasingly ascribed central roles in vital cell signalling cascades. These organelles are now recognised as initiators and transducers of a range of cell signals, including those central to activation and amplification of apoptotic cell death. Moreover, as the main source of cellular ATP, mitochondria must be responsive to fluctuating energy demands of the cell. As local and global fluctuations in calcium concentration are ubiquitous in eukaryotic cells and are the common factor in a dizzying array of intra- and inter-cellular signalling cascades, the relationships between mitochondrial function and calcium transients is currently a subject of intense scrutiny. It is clear that mitochondria not only act as local calcium buffers, thus shaping spatiotemporal aspects of cytosolic calcium signals, but that they also respond to calcium uptake by upregulating the tricarboxylic acid cycle, thus reacting metabolically to local signalling. In this chapter we review current knowledge of mechanisms of mitochondrial calcium uptake and release and discuss the consequences of mitochondrial calcium handling for cell function, particularly in conjunction with mitochondrial oxidative stress.
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