Cited by 77Mitochondrial Function and PathologyAutophagy in Disease and TherapyGenetics, Aging, and Longevity in Model Organisms

Mitochondrial function and mitochondrial DNA maintenance with advancing age

Gaziev, Azhub I., Abdullaev, Serzh, Podlutsky, Andrej·2014·Biogerontology

Abstract

We review the impact of mitochondrial DNA (mtDNA) maintenance and mitochondrial function on the aging process. Mitochondrial function and mtDNA integrity are closely related. In order to create a protective barrier against reactive oxygen and nitrogen species (RONS) attacks and ensure mtDNA integrity, multiple cellular mtDNA copies are packaged together with various proteins in nucleoids. Regulation of antioxidant and RONS balance, DNA base excision repair, and selective degradation of damaged mtDNA copies preserves normal mtDNA quantities. Oxidative damage to mtDNA molecules does not substantially contribute to increased mtDNA mutation frequency; rather, mtDNA replication errors of DNA PolG are the main source of mtDNA mutations. Mitochondrial turnover is the major contributor to maintenance of mtDNA and functionally active mitochondria. Mitochondrial turnover involves mitochondrial biogenesis, mitochondrial dynamics, and selective autophagic removal of dysfunctional mitochondria (i.e., mitophagy). All of these processes exhibit decreased activity during aging and fall under greater nuclear genome control, possibly coincident with the emergence of nuclear genome instability. We suggest that the age-dependent accumulation of mutated mtDNA copies and dysfunctional mitochondria is associated primarily with decreased cellular autophagic and mitophagic activity.

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Crossref · 10.1007/s10522-014-9515-2

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258 of 258 references verified0 citation errors · 0 not checkable

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  • Insufficient mitophagy and autophagy contribute to the accumulation of mutant mtDNA and are a factor in aging and age-related diseases.

    “As with the fission and fusion processes, insufficient mitophagy and autophagy contribute to the accumulation of mutant mtDNA and are a factor in aging and age-related diseases (Gaziev et al., 2014; Green et al., 2011; Hubbard et al., 2012; Rubinsztein et al., 2011).”

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Authors
Gaziev, A. I., Abdullaev, S., & Podlutsky, A.
Affiliations
  • Russian Academy of Sciences (RU)
  • University of Alaska Fairbanks (US)
Corresponding author
Podlutsky, Andrej
Venue
Biogerontology
Published
2014-07-12
Volume
15
Issue
5
Pages
417-438
ISSN
  • 1389-5729 (ISSN-L)
  • 1573-6768
OpenAlex
W1990353436
Cited by
77
References
258
Citations by year
2026: 2 · 2025: 5 · 2024: 5 · 2023: 5 · 2022: 7 · 2021: 10 · 2020: 7 · 2019: 4 · 2018: 9 · 2017: 7 · 2016: 7 · 2015: 7 · 2014: 2
FWCI
0.72
Type
journal article
Language
en
Open access
closed
Locations
  • Biogerontology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Baoji University of Arts And Sciences
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
mitochondrial DNA maintenance, mitochondrial function, aging, mitochondrial DNA mutations, DNA polymerase gamma, oxidative damage, reactive oxygen and nitrogen species, DNA base excision repair, mitochondrial nucleoids, mitochondrial turnover, mitochondrial biogenesis, mitochondrial dynamics, mitophagy, autophagy
MeSH terms
Aging, Animals, Antioxidants, Autophagy, DNA Damage, DNA Repair, DNA, Mitochondrial, Humans, Mitochondria, Mutagenesis, Reactive Oxygen Species, Reactive Nitrogen Species, DNA Packaging, Mitophagy

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