Cited by 144Mitochondrial Function and PathologyGenetic Associations and EpidemiologyForensic and Genetic Research

Nuclear genetic control of mitochondrial DNA segregation

Battersby, Brendan J., Loredo-Osti, J.C., Shoubridge, Eric A.·2003·Nature Genetics

Abstract

Mammalian mitochondrial DNA (mtDNA) is a high copy-number, maternally inherited genome that codes for a small number of essential proteins involved in oxidative phosphorylation. Mutations in mtDNA are responsible for a broad spectrum of clinical disorders. The segregation pattern of pathogenic mtDNA mutants is an important determinant of the nature and severity of mitochondrial disease, but it varies with the specific mutation, cell type and nuclear background and generally does not correlate well with mitochondrial dysfunction. To identify nuclear genes that modify the segregation behavior of mtDNA, we used a heteroplasmic mouse model derived from two inbred strains (BALB/c and NZB; ref. 12), in which we had previously demonstrated tissue-specific and age-dependent directional selection for different mtDNA genotypes in the same mouse. Here we show that this phenotype segregates in F2 mice from a genetic cross (BALB/c x CAST/Ei) and that it maps to at least three quantitative-trait loci (QTLs). Genome-wide scans showed linkage of the trait to loci on Chromosomes 2, 5 and 6, accounting for 16-35% of the variance in the trait, depending on the tissue and age of the mouse. This is the first genetic evidence for nuclear control of mammalian mtDNA segregation.

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Crossref · 10.1038/ng1073

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  • Directional selection for one mtDNA genotype in certain tissues, mediated by single tissue-specific factors, has been repeatedly observed.

    “However, the repeated observation of directional selection for one mtDNA genotype in certain tissues [170], mediated by single tissue-specific factors [171], suggests these mouse models will be particularly important in our quest to understanding the basis of tissue specificity and mtDNA somatic segregation.”

    From Mitochondrial DNA mutations and human disease (2010) · cites this paper as [170]

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Authors
Battersby, B. J., Loredo-Osti, J. C., & Shoubridge, E. A.
Affiliations
Montreal Neurological Institute and Hospital (CA)
Corresponding author
Shoubridge, Eric A.
Venue
Nature Genetics
Published
2003-01-21
Volume
33
Issue
2
Pages
183-186
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2054789602
Cited by
144
References
30
Citations by year
2026: 1 · 2025: 2 · 2024: 5 · 2023: 5 · 2022: 4 · 2021: 7 · 2020: 6 · 2019: 5 · 2018: 5 · 2017: 2 · 2016: 2 · 2015: 8 · 2014: 3 · 2013: 3 · 2012: 6
FWCI
3.91
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
Funders
McGill University
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Forensic and Genetic Research
Keywords
mitochondrial DNA segregation, heteroplasmy, mitochondrial disease, quantitative trait loci, linkage mapping, nuclear-mitochondrial interactions, F2 segregation, mouse model
MeSH terms
Animals, Cell Nucleus, Crosses, Genetic, DNA, Mitochondrial, Female, Genotype, Kidney, Genetic Linkage, Liver, Male, Mice, Inbred C57BL, Mice, Inbred NZB, Mice, Transgenic, Models, Genetic, Organ Specificity, Oxidative Phosphorylation, Selection, Genetic, Spleen, Stem Cells, Genetic Variation, Muscle, Skeletal, Founder Effect, Chromosome Segregation, Quantitative Trait Loci, Mice

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