Cited by 60Mitochondrial Function and PathologyGenetics, Aging, and Longevity in Model OrganismsTelomeres, Telomerase, and Senescence

Age-Dependent Decrease of Mitochondrial Complex II Activity in Human Skin Fibroblasts

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Bowman, Amy, Birch-Machin, Mark A.·2016·Journal of Investigative Dermatology

Abstract

The mitochondrial theory of aging remains one of the most widely accepted aging theories and implicates mitochondrial electron transport chain dysfunction with subsequent increasing free radical generation. Recently, complex II of the electron transport chain appears to be more important than previously thought in this process, suggested predominantly by nonhuman studies. We investigated the relationship between complex II and aging using human skin as a model tissue. The rate of complex II activity per unit of mitochondria was determined in fibroblasts and keratinocytes cultured from skin covering a wide age range. Complex II activity significantly decreased with age in fibroblasts (P = 0.015) but not in keratinocytes. This was associated with a significant decline in transcript expression (P = 0.008 and P = 0.001) and protein levels (P = 0.0006 and P = 0.005) of the succinate dehydrogenase complex subunit A and subunit B catalytic subunits of complex II, respectively. In addition, there was a significant decrease in complex II activity with age (P = 0.029) that was specific to senescent skin cells. There was no decrease in complex IV activity with increasing age, suggesting possible locality to complex II.

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Crossref · 10.1016/j.jid.2016.01.017

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  1. Durham SE, Betts J, Krishnan KJ, Birch-Machin MA. Histochemical and mutational analysis of mitochondrial function and DNA in tumours and matched normal human skin. Br J Dermatol 2002;146:733.

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Authors
Bowman, A., & Birch-Machin, M. A.
Affiliations
Newcastle University (GB)
Venue
Journal of Investigative Dermatology
Publisher
Elsevier BV
Published
2016-05
Volume
136
Issue
5
Pages
912-919
ISSN
0022-202X (ISSN-L)
OpenAlex
W2239153527
Cited by
60
References
46
Citations by year
2026: 2 · 2025: 7 · 2024: 6 · 2023: 6 · 2022: 8 · 2021: 5 · 2020: 3 · 2019: 7 · 2018: 5 · 2017: 7 · 2016: 4
FWCI
3.98
Type
journal article
Language
en
Open access
Locations
  • Journal of Investigative Dermatology (publishedVersion)
  • PubMed (publishedVersion)
  • Newcastle University ePrints (Newcastle Univesity) (cc-by-nc-nd)
Funders
  • National Institute for Health and Care Research
  • Newcastle University
  • Fakultet Medicinskih Nauka, Univerziteta U Kragujevcu
  • NIHR Newcastle Biomedical Research Centre
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
Keywords
succinate dehydrogenase, aging, dermal fibroblasts, keratinocytes, mitochondrial electron transport chain, mitochondrial theory of aging, senescence, cytochrome c oxidase, gene expression, free radicals
MeSH terms
Cells, Cultured, Female, Fibroblasts, Gene Expression Regulation, Humans, Male, Metabolism, Inborn Errors, Mitochondria, Sensitivity and Specificity, Spectrophotometry, Biomarkers, Skin Aging, Keratinocytes, Risk Assessment, Mitochondrial Diseases, Electron Transport Complex II

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