Cited by 211Fibroblast Growth Factor ResearchMitochondrial Function and PathologyMuscle Physiology and Disorders

OPA1 deficiency promotes secretion of FGF21 from muscle that prevents obesity and insulin resistance

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Pereira, Renata Oliveira, Tadinada, Satya M, Zasadny, Frederick M, Oliveira, Karen Jesus, Pires, Karla Maria Pereira, Olvera, Angela, Jeffers, Jennifer, Souvenir, Rhonda +8 more·2017·The EMBO Journal

Abstract

Mitochondrial dynamics is a conserved process by which mitochondria undergo repeated cycles of fusion and fission, leading to exchange of mitochondrial genetic content, ions, metabolites, and proteins. Here, we examine the role of the mitochondrial fusion protein optic atrophy 1 (OPA1) in differentiated skeletal muscle by reducing OPA1 gene expression in an inducible manner. OPA1 deficiency in young mice results in non-lethal progressive mitochondrial dysfunction and loss of muscle mass. Mutant mice are resistant to age- and diet-induced weight gain and insulin resistance, by mechanisms that involve activation of ER stress and secretion of fibroblast growth factor 21 (FGF21) from skeletal muscle, resulting in increased metabolic rates and improved whole-body insulin sensitivity. OPA1-elicited mitochondrial dysfunction activates an integrated stress response that locally induces muscle atrophy, but via secretion of FGF21 acts distally to modulate whole-body metabolism.

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Crossref · 10.15252/embj.201696179

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  • Inhibition of OPA1 in muscle results in a similar but more severe phenotype than skeletal muscle MFN1 and MFN2 ablation.

    “Inhibition of the IMM profusion factor, OPA1, in muscle resulted in a similar but more severe phenotype than skeletal muscle MFN1 and MFN2 ablation [187, 192, 193].”
  • The metabolic changes in the mild OPA1 inhibition model are mediated by muscle secretion of FGF21, whose level was mildly increased compared to complete OPA1 deletion in adulthood.

    “Consistent with the other OPA1 knockout mice, also in this model, the metabolic changes are mediated by the muscle secretion of FGF21, whose level was mildly increased when compared to the ones present in mice in which OPA1 is completely deleted in adulthood.”
  • When OPA1 was deleted during fetal development, animals died a few days after birth.

    “When OPA1 was deleted during fetal development, animals died a few days after birth.”
  • Mild inhibition of OPA1 during neonatal growth, which does not alter mitochondrial complex and supercomplex formation, mitochondrial DNA content, or citrate synthase activity, results in beneficial metabolic changes in resistance to obesity when animals are challenged with a high-fat diet.

    “Interestingly, a mild inhibition of OPA1, which does not alter mitochondrial complex and supercomplex formation as well as mitochondrial DNA content and citrate synthase activity, in muscle during neonatal growth results in several beneficial metabolic changes in terms of resistance to obesity when the animals were challenged with a high-fat diet [193].”
  • Deletion of OPA1 in adult mice (3-5 months of age) results in a decrease of mtDNA, reduced respiratory complexes and supercomplexes content, and reduced complex activity, respiration, and mitochondrial membrane potential.

    “Deletion of OPA1 in adult mice (3–5 months of age) resulted in a decrease of mtDNA, reduced respiratory complexes and supercomplexes content, and complex activity, respiration, and mitochondrial membrane potential.”

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Authors
Pereira, R. O., Tadinada, S. M., Zasadny, F. M., Oliveira, K. J., Pires, K. M. P., Olvera, A., Jeffers, J., Souvenir, R., Mcglauflin, R., Seei, A., Funari, T., Sesaki, H., Potthoff, M. J., Adams, C. M., Anderson, E. J., & Abel, E. D.
Affiliations
  • University of Iowa (US)
  • University of Utah (US)
  • Johns Hopkins University (US)
Corresponding author
Abel, E Dale
Venue
The EMBO Journal
Published
2017-06-12
Volume
36
Issue
14
Pages
2126-2145
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W2625633983
Cited by
211
References
63
Citations by year
2026: 25 · 2025: 17 · 2024: 23 · 2023: 28 · 2022: 23 · 2021: 30 · 2020: 23 · 2019: 17 · 2018: 22 · 2017: 3
FWCI
7.26
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Heart Association (15SDG25710438)
  • HHS | National Institutes of Health (R01HL108379, R01DK092065)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fibroblast Growth Factor Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
OPA1, optic atrophy 1, mitochondrial fusion, mitochondrial dysfunction, skeletal muscle, endoplasmic reticulum stress, integrated stress response, muscle atrophy, obesity, insulin resistance, aging, metabolic rate, whole-body metabolism
MeSH terms
Animals, Fibroblast Growth Factors, Insulin Resistance, Muscles, Muscular Atrophy, Obesity, GTP Phosphohydrolases, Mice, Gene Knockdown Techniques

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