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Mitochondria play the central role in supplying cells with ATP and are also the major source of reactive oxygen species (ROS) - molecules of both regulatory and destructive nature. Dysfunction of mitochondrial metabolism and/or morphology have been frequently reported in human cancers. This dysfunction can be associated with mitochondrial DNA (mtDNA) damage, which may be changed into mutations in...
Many models of tumour formation have been put forth so far. In general they involve mutations in at least three elements within the cell: oncogenes, tumour suppressors and regulators of telomere replication. Recently numerous mutations in mitochondria have been found in many tumours, whereas they were absent in normal tissues from the same individual. The presence of mutations, of course, does not...
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