Safeguarding mitochondrial genomes in higher eukaryotes
- PMID: 32764737
- DOI: 10.1038/s41594-020-0474-9
Safeguarding mitochondrial genomes in higher eukaryotes
Abstract
Mitochondria respond to DNA damage and preserve their own genetic material in a manner distinct from that of the nucleus but that requires organized mito-nuclear communication. Failure to resolve mtDNA breaks leads to mitochondrial dysfunction and affects host cells and tissues. Here, we review the pathways that safeguard mitochondrial genomes and examine the insights gained from studies of cellular and tissue-wide responses to mtDNA damage and mito-nuclear genome incompatibility.
References
-
- Sagan, L. On the origin of mitosing cells. J. Theor. Biol. 14, 255–574 (1967). - PubMed
-
- Kukat, C. et al. Cross-strand binding of TFAM to a single mtDNA molecule forms the mitochondrial nucleoid. Proc. Natl Acad. Sci. USA 112, 11288–11293 (2015). - PubMed
-
- Kukat, C. et al. Super-resolution microscopy reveals that mammalian mitochondrial nucleoids have a uniform size and frequently contain a single copy of mtDNA. Proc. Natl Acad. Sci. USA 108, 13534–13539 (2011). Super-resolution imaging reveals that nucleoids in mammalian mitochondria display uniform size, and each contains a single copy of mtDNA. In addition, replication occurs only in a subset of nucleoids. - PubMed
-
- Larsson, N.-G. et al. Mitochondrial transcription factor A is necessary for mtDNA maintenance and embryogenesis in mice. Nat. Genet. 18, 231–236 (1998). - PubMed
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