Cited by 520Mitochondrial Function and PathologyHereditary Neurological DisordersMetabolism and Genetic Disorders

OPA1 mutations induce mitochondrial DNA instability and optic atrophy 'plus' phenotypes

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Amati-Bonneau, P., Valentino, M. L., Reynier, P., Gallardo, M. E., Bornstein, B., Boissiere, A., Campos, Y., Rivera, H. +26 more·2008·Brain

Abstract

Mutations in OPA1, a dynamin-related GTPase involved in mitochondrial fusion, cristae organization and control of apoptosis, have been linked to non-syndromic optic neuropathy transmitted as an autosomal-dominant trait (DOA). We here report on eight patients from six independent families showing that mutations in the OPA1 gene can also be responsible for a syndromic form of DOA associated with sensorineural deafness, ataxia, axonal sensory-motor polyneuropathy, chronic progressive external ophthalmoplegia and mitochondrial myopathy with cytochrome c oxidase negative and Ragged Red Fibres. Most remarkably, we demonstrate that these patients all harboured multiple deletions of mitochondrial DNA (mtDNA) in their skeletal muscle, thus revealing an unrecognized role of the OPA1 protein in mtDNA stability. The five OPA1 mutations associated with these DOA 'plus' phenotypes were all mis-sense point mutations affecting highly conserved amino acid positions and the nuclear genes previously known to induce mtDNA multiple deletions such as POLG1, PEO1 (Twinkle) and SLC25A4 (ANT1) were ruled out. Our results show that certain OPA1 mutations exert a dominant negative effect responsible for multi-systemic disease, closely related to classical mitochondrial cytopathies, by a mechanism involving mtDNA instability.

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  1. Hoppins S, Lackner L, Nunnari J. The machine that divide and fuse mitochondria. Ann Rev Biochem 2007; 76: 33.1-.30.

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Authors
Amati-Bonneau, P., Valentino, M. L., Reynier, P., Gallardo, M. E., Bornstein, B., Boissiere, A., Campos, Y., Rivera, H., de la Aleja, J. G., Carroccia, R., Iommarini, L., Labauge, P., Figarella-Branger, D., Marcorelles, P., Furby, A., Beauvais, K., Letournel, F., Liguori, R., La Morgia, C., Montagna, P., Liguori, M., Zanna, C., Rugolo, M., Cossarizza, A., Wissinger, B., Verny, C., Schwarzenbacher, R., Martin, M. A., Arenas, J. N., Ayuso, C., Garesse, R., Lenaers, G., Bonneau, D., & Carelli, V.
Affiliations
Consejo Superior de Investigaciones Científicas (ES)
Venue
Brain
Published
2008-02-01
Volume
131
Issue
2
Pages
338-351
ISSN
  • 0006-8950 (ISSN-L)
  • 1460-2156
OpenAlex
W2109942343
Cited by
520
References
52
Citations by year
2026: 9 · 2025: 13 · 2024: 22 · 2023: 23 · 2022: 21 · 2021: 30 · 2020: 30 · 2019: 33 · 2018: 27 · 2017: 30 · 2016: 28 · 2015: 28 · 2014: 28 · 2013: 35 · 2012: 30
FWCI
13.66
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Brain (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Agritrop (Cirad) (publishedVersion, cc-by-nc)
  • HAL (submittedVersion, other-oa)
  • IRIS UNIMORE (University of Modena and Reggio Emilia) (submittedVersion, cc-by-nc)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, cc-by-nc)
Funders
  • Institut National de la Santé et de la Recherche Médicale
  • Università di Bologna
  • Universite Angers
  • Retina France
  • Instituto de Salud Carlos III (PI060547)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
Keywords
OPA1, mitochondrial DNA instability, mitochondrial DNA deletions, autosomal dominant optic atrophy, mitochondrial fusion, dynamin-related GTPase, sensorineural hearing loss, ataxia, axonal neuropathy, chronic progressive external ophthalmoplegia, mitochondrial myopathy, cytochrome c oxidase deficiency, ragged-red fibers, dominant negative effect, mitochondrial disease, missense mutations
MeSH terms
Adult, Aged, Base Sequence, Child, DNA Mutational Analysis, DNA, Mitochondrial, Female, Fibroblasts, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Models, Molecular, Pedigree, Syndrome, Tomography, X-Ray Computed, Mitochondrial Myopathies, Ophthalmoplegia, Chronic Progressive External, Point Mutation, Muscle, Skeletal, Mutation, Missense, GTP Phosphohydrolases, Optic Atrophy, Autosomal Dominant

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