Cited by 41Muscle Physiology and DisordersMitochondrial Function and PathologyAdipose Tissue and Metabolism

Loss of Myostatin Alters Mitochondrial Oxidative Phosphorylation, TCA Cycle Activity, and ATP Production in Skeletal Muscle

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Wang, Xueqiao, Wei, Zhuying, Gu, Mingjuan, Zhu, Lin, Hai, Chao, Di, Anqi, Wu, Di, Bai, Chunling +4 more·2022·International Journal of Molecular Sciences

Abstract

Myostatin (MSTN) is an important negative regulator of skeletal muscle growth in animals. A lack of MSTN promotes lipolysis and glucose metabolism but inhibits oxidative phosphorylation (OXPHOS). Here, we aimed to investigate the possible mechanism of MSTN regulating the mitochondrial energy homeostasis of skeletal muscle. To this end, MSTN knockout mice were generated by the CRISPR/Cas9 technique. Expectedly, the MSTN null (Mstn−/−) mouse has a hypermuscular phenotype. The muscle metabolism of the Mstn−/− mice was detected by an enzyme-linked immunosorbent assay, indirect calorimetry, ChIP-qPCR, and RT-qPCR. The resting metabolic rate and body temperature of the Mstn−/− mice were significantly reduced. The loss of MSTN not only significantly inhibited the production of ATP by OXPHOS and decreased the activity of respiratory chain complexes, but also inhibited key rate-limiting enzymes related to the TCA cycle and significantly reduced the ratio of NADH/NAD+ in the Mstn−/− mice, which then greatly reduced the total amount of ATP. Further ChIP-qPCR results confirmed that the lack of MSTN inhibited both the TCA cycle and OXPHOS, resulting in decreased ATP production. The reason may be that Smad2/3 is not sufficiently bound to the promoter region of the rate-limiting enzymes Idh2 and Idh3a of the TCA cycle, thus affecting their transcription.

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Authors
Wang, X., Wei, Z., Gu, M., Zhu, L., Hai, C., Di, A., Wu, D., Bai, C., Su, G., Liu, X., Yang, L., & Li, G.
Affiliations
  • Inner Mongolia University (CN)
  • Inner Mongolia Agricultural University (CN)
Corresponding author
  • Yang, Lei
  • Li, Guangpeng
Venue
International Journal of Molecular Sciences
Publisher
MDPI AG
Published
2022-12-11
Volume
23
Issue
24
Pages
15707
ISSN
1422-0067 (ISSN-L)
OpenAlex
W4311135120
Cited by
29
References
74
Citations by year
2026: 6 · 2025: 12 · 2024: 7 · 2023: 4
FWCI
2.86
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Inner Mongolia Autonomous Region Open Competition Projects (2022JBGS0025, 2021ZD0009, 2021ZD0008, 2022ZD0008, 2022LJRC0006, 2022-nong-4, JYBGCSYS2022)
  • Inner Mongolia Autonomous Region Science and Technology Major Project (2022JBGS0025, 2021ZD0009, 2021ZD0008, 2022ZD0008, 2022LJRC0006, 2022-nong-4, JYBGCSYS2022)
  • Inner Mongolia Autonomous Region Science and Technology Leading Talent Team (2022JBGS0025, 2021ZD0009, 2021ZD0008, 2022ZD0008, 2022LJRC0006, 2022-nong-4, JYBGCSYS2022)
  • Inner Mongolia Hohhot City Science and Technology Project (2022JBGS0025, 2021ZD0009, 2021ZD0008, 2022ZD0008, 2022LJRC0006, 2022-nong-4, JYBGCSYS2022)
  • Engineering Research Center of the Ministry of Education on Excellent Livestock Scale Breeding Technology (2022JBGS0025, 2021ZD0009, 2021ZD0008, 2022ZD0008, 2022LJRC0006, 2022-nong-4, JYBGCSYS2022)
  • Inner Mongolia University Chief Scientist Program (2022JBGS0025, 2021ZD0009, 2021ZD0008, 2022ZD0008, 2022LJRC0006, 2022-nong-4, JYBGCSYS2022)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
myostatin, Mstn knockout mice, skeletal muscle, mitochondrial oxidative phosphorylation, TCA cycle, ATP production, resting metabolic rate, NAD+/NADH ratio, respiratory chain complexes, Smad2/3, IDH2, transcriptional regulation, muscle metabolism
MeSH terms
Adenosine Triphosphate, Animals, Mitochondria, Oxidative Phosphorylation, Mice, Knockout, Muscle, Skeletal, Mice, Myostatin

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