Regulation of skeletal muscle mitochondrial function: genes to proteins
Open accessAbstract
The impact of ageing on mitochondrial function and the deterministic role of mitochondria on senescence continue to be topics of vigorous debate. Many studies report that skeletal muscle mitochondrial content and function are reduced with ageing and metabolic diseases associated with insulin resistance. However, an accumulating body of literature suggests that physical inactivity typical of ageing may be a more important determinant of mitochondrial function than chronological age,per se. Reports of age‐related declines in mitochondrial function have spawned a vast body of literature devoted to understanding the underlying mechanisms. These mechanisms include decreased abundance of mtDNA, reduced mRNA levels, as well as decreased synthesis and expression of mitochondrial proteins, ultimately resulting in decreased function of the whole organelle. Effective therapies to prevent, reverse or delay the onset of the aforementioned mitochondrial changes, regardless of their inevitability or precise underlying causes, require an intimate understanding of the processes that regulate mitochondrial biogenesis, which necessitates the coordinated regulation of nuclear and mitochondrial genomes. Herein we review the current thinking on regulation of mitochondrial biogenesis by transcription factors and transcriptional co‐activators and the role of hormones and exercise in initiating this process. We review how exercise may help preserve mitochondrial content and functionality across the lifespan, and how physical inactivity is emerging as a major determinant of many age‐associated changes at the level of the mitochondrion. We also review evidence that some mitochondrial changes with ageing are independent of exercise or physical activity and appear to be inevitable consequences of old age.
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The relationship between BMI and reduced mitochondrial capacity may be due to the interplay between adiposity and the development of insulin resistance and mitochondrial dysfunction.
“The relationship between BMI and reduced mitochondrial capacity may be due to the interplay between adiposity and the development of insulin resistance and mitochondrial dysfunction (32) or simply to the lack of physical activity and/or other lifestyle factors.”
From Chronological Age Does not Influence<i>Ex-vivo</i>Mitochondrial Respiration and Quality Control in Skeletal Muscle (2016) · cites this paper as [32]
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- Authors
- Lanza, I. R., & Sreekumaran Nair, K.
- Affiliations
- Mayo Clinic (US)
- ORCID
- Lanza, I. R.
- Venue
- Acta Physiologica
- Publisher
- Wiley
- Published
- 2010-07
- Volume
- 199
- Issue
- 4
- Pages
- 529-547
- ISSN
- 1748-1708 (ISSN-L)
- 1748-1716
- PMC
- PMC3070482
- OpenAlex
- W1850019235
- Cited by
- 83
- References
- 155
- Citations by year
- 2026: 3 · 2025: 6 · 2024: 1 · 2022: 1 · 2021: 3 · 2020: 4 · 2019: 4 · 2018: 4 · 2017: 4 · 2016: 9 · 2015: 8 · 2014: 9 · 2013: 5 · 2012: 14
- FWCI
- 0.74
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Acta Physiologica (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institute on Aging (R01AG009531)
- National Institute of Diabetes and Digestive and Kidney Diseases (R01DK041973, T32DK007198)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
- Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
- Keywords
- skeletal muscle, mitochondrial function, mitochondrial biogenesis, aging, physical inactivity, physical activity, insulin resistance, mitochondrial DNA, transcription factors, transcriptional coactivator, hormones, mitochondrial content, cellular senescence
- MeSH terms
- Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha, Adenosine Triphosphate, Aging, Animals, DNA, Mitochondrial, Heat-Shock Proteins, Hormones, Humans, Mitochondria, Muscle, Muscle Proteins, Physical Endurance, Transcription Factors, Signal Transduction, Exercise, Cellular Senescence, Muscle, Skeletal, Mitochondrial Proteins
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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