Depletion of mtDNA: syndromes and genes

Mitochondrion. 2007 Feb-Apr;7(1-2):6-12. doi: 10.1016/j.mito.2006.11.010. Epub 2006 Dec 5.


Maintenance of mitochondrial DNA (mtDNA) requires the concerted activity of several nuclear-encoded factors that participate in its replication, being part of the mitochondrial replisome or ensuring the balanced supply of dNTPs to mitochondria. In the past decade, a growing number of syndromes associated with dysfunction due to tissue-specific depletion of mtDNA (MDS) have been reported. This article reviews the current knowledge of the genes responsible for these disorders, the impact of different mutations in the epidemiology of MDS and their role in the pathogenic mechanisms underlying the different clinical presentations.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • DNA Polymerase gamma
  • DNA, Mitochondrial / genetics
  • DNA, Mitochondrial / metabolism*
  • DNA-Directed DNA Polymerase / deficiency
  • DNA-Directed DNA Polymerase / genetics
  • Humans
  • Membrane Proteins / deficiency
  • Membrane Proteins / genetics
  • Mitochondria / metabolism*
  • Mitochondrial Diseases / genetics*
  • Mitochondrial Encephalomyopathies / genetics
  • Mitochondrial Myopathies / genetics
  • Phosphotransferases (Alcohol Group Acceptor) / genetics
  • Succinate-CoA Ligases / deficiency
  • Thymidine Kinase / genetics


  • DNA, Mitochondrial
  • MPV17L protein, human
  • Membrane Proteins
  • Phosphotransferases (Alcohol Group Acceptor)
  • deoxyguanosine kinase
  • Thymidine Kinase
  • DNA Polymerase gamma
  • DNA-Directed DNA Polymerase
  • Succinate-CoA Ligases
  • SUCLA2 protein, human