Cited by 460Mitochondrial Function and PathologyCell death mechanisms and regulationAutophagy in Disease and Therapy

The Opa1-Dependent Mitochondrial Cristae Remodeling Pathway Controls Atrophic, Apoptotic, and Ischemic Tissue Damage

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Varanita, Tatiana, Soriano, Maria Eugenia, Romanello, Vanina, Zaglia, Tania, Quintana-Cabrera, Rubén, Semenzato, Martina, Menabò, Roberta, Costa, Veronica +8 more·2015·Cell Metabolism

Abstract

Mitochondrial morphological and ultrastructural changes occur during apoptosis and autophagy, but whether they are relevant in vivo for tissue response to damage is unclear. Here we investigate the role of the optic atrophy 1 (OPA1)-dependent cristae remodeling pathway in vivo and provide evidence that it regulates the response of multiple tissues to apoptotic, necrotic, and atrophic stimuli. Genetic inhibition of the cristae remodeling pathway in vivo does not affect development, but protects mice from denervation-induced muscular atrophy, ischemic heart and brain damage, as well as hepatocellular apoptosis. Mechanistically, OPA1-dependent mitochondrial cristae stabilization increases mitochondrial respiratory efficiency and blunts mitochondrial dysfunction, cytochrome c release, and reactive oxygen species production. Our results indicate that the OPA1-dependent cristae remodeling pathway is a fundamental, targetable determinant of tissue damage in vivo.

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Crossref · 10.1016/j.cmet.2015.05.007

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  • The release of CYCS and SMAC to the cytosol is favored by mitochondrial cristae remodeling, which relies on the oligomerization and activation of OPA1, possibly preceded by BAX-dependent and BAK-dependent activation of OMA1 and/or DRP1.

    “The release of CYCS and SMAC to the cytosol is favored by mitochondrial cristae remodeling [164], which relies on the oligomerization and activation of OPA1, mitochondrial dynamin like GTPase (OPA1) [165], possibly preceded by the BAX-dependent and BAK-dependent activation of OMA1 zinc metallopeptidase (OMA1) [166, 167], and/or dynamin 1 like (DNM1L; best known as DRP1) [168].”
  • OPA1 transgenic mice are protected from acute muscle loss induced by denervation and from chronic muscle loss in a model of myopathy caused by muscle-specific deletion of COX15.

    “OPA1 transgenic mice are protected from acute muscle loss induced by denervation [194] as well as from chronic muscle loss in a model of myopathy caused by muscle-specific deletion of the mitochondrial subunit COX15 [195].”
  • Rebalancing of mitochondrial dynamics rescues the phenotype of certain diseases associated with alterations of mitochondrial fusion or fission.

    “Several reports have shown that rebalancing of mitochondrial dynamics rescues the phenotype of certain diseases associated with alterations of mitochondrial fusion or fission [119, 194, 195, 214]”
  • Overexpression of Opa1 protects from denervation-induced muscle loss and ameliorates muscle function in a mouse model of mitochondrial myopathy.

    “Conversely, overexpression of Opa1 protects from denervation-induced muscle loss and ameliorates muscle function in a mouse model of mitochondrial myopathy [9,10].”
  • OPA1 overexpression protects mice from acute and chronic muscle atrophy by ameliorating mitochondrial cristae remodeling and mitochondrial dysfunction.

    “Conversely, OPA1 overexpression protects mice from acute and chronic muscle atrophy by ameliorating mitochondrial cristae remodeling and mitochondrial dysfunction (87, 88).”

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Authors
Varanita, T., Soriano, M. E., Romanello, V., Zaglia, T., Quintana-Cabrera, R., Semenzato, M., Menabò, R., Costa, V., Civiletto, G., Pesce, P., Viscomi, C., Zeviani, M., Di Lisa, F., Mongillo, M., Sandri, M., & Scorrano, L.
Affiliations
  • University of Padua (IT)
  • National Research Council (IT)
  • Veneto Institute of Molecular Medicine (IT)
  • Fondazione IRCCS Istituto Neurologico Carlo Besta (IT)
Corresponding author
Scorrano, Luca
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2015-06
Volume
21
Issue
6
Pages
834-844
ISSN
1550-4131 (ISSN-L)
OpenAlex
W1570973990
Cited by
460
References
60
Citations by year
2026: 32 · 2025: 36 · 2024: 38 · 2023: 42 · 2022: 44 · 2021: 51 · 2020: 41 · 2019: 34 · 2018: 48 · 2017: 42 · 2016: 40 · 2015: 11
FWCI
20.40
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (acceptedVersion, other-oa)
  • Padua Research Archive (University of Padova) (submittedVersion, cc-by)
Funders
  • European Commission (618697)
  • Fondation Leducq
  • Università degli Studi di Padova
  • Associazione Italiana per la Ricerca sul Cancro
  • FP7 Ideas: European Research Council (282280, 282310)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
OPA1, mitochondrial cristae remodeling, mitochondrial ultrastructure, tissue atrophy, apoptosis, ischemic injury, denervation-induced muscle atrophy, ischemic brain injury, hepatocyte apoptosis, cytochrome c release, reactive oxygen species, mitochondrial dysfunction
MeSH terms
Animals, Mice, Transgenic, Mitochondria, Muscular Atrophy, Oxygen Consumption, Reactive Oxygen Species, GTP Phosphohydrolases, Cytochromes c, Mice

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