Cited by 551Mitochondrial Function and PathologyAutophagy in Disease and TherapyCell death mechanisms and regulation

Imbalanced OPA1 processing and mitochondrial fragmentation cause heart failure in mice

Wai, Timothy, García-Prieto, Jaime, Baker, Michael J., Merkwirth, Carsten, Benit, Paule, Rustin, Pierre, Rupérez, Francisco Javier, Barbas, Coral +2 more·2015·Science

Abstract

A change of heart (mitochondria): Mitochondria provide an essential source of energy to drive cellular processes and are particularly important in heart muscle cells (see the Perspective by Gottlieb and Bernstein). After birth, the availability of oxygen and nutrients to organs and tissues changes. This invokes changes in metabolism. Gong et al. studied the developmental transitions in mouse heart mitochondria soon after birth. Mitochondria were replaced wholesale via mitophagy in cardiomyocytes over the first 3 weeks after birth. Preventing this turnover by interfering with parkin-mediated mitophagy specifically in cardiomyocytes prevented the normal metabolic transition and caused heart failure. Thus, the heart has coopted a quality-control pathway to facilitate a major developmental transition after birth. Wai et al. examined the role of mitochondrial fission and fusion in mouse cardiomyocytes. Disruption of these processes led to “middle-aged” death from a form of dilated cardiomyopathy. Mice destined to develop cardiomyopathy were protected by feeding with a high-fat diet, which altered cardiac metabolism. Science , this issue p. 10.1126/science.aad2459 , p. 10.1126/science.aad0116 ; see also p. 1162

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Crossref · 10.1126/science.aad0116

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  • Germline deletion of OMA1 does not impair embryogenesis, indicating that OMA1-induced OPA1 processing is dispensable for embryonic and adult mouse development.

    “In contrast to Yme1L1, the germline deletion of OMA1 does not impair embryogenesis, which indicates that OMA1-induced OPA1 processing is dispensable for embryonic and adult mouse development [166, 167].”
  • In mice, total genetic ablation of Yme1L1 leads to embryonic death.

    “In mice, total genetic ablation of Yme1L1 leads to embryonic death, while the specific inhibition of the gene in the heart causes dilated cardiomyopathy that shortens lifespan (median life span:46 weeks).”
  • Cardiac function and lifespan of mice lacking YME1L in cardiomyocytes are normalized without restoring mitochondrial morphology when deletion of YME1L happens in both cardiomyocytes and skeletal muscle fibers, with median life span 125 weeks.

    “Interestingly, cardiac function and lifespan of mice lacking YME1L in cardiomyocytes are normalized without restoring mitochondrial morphology, when the deletion of YME1L happens in both cardiomyocytes and skeletal muscle fibers (median life span 125 weeks).”
  • Double deletion of Yme1L1 and OMA1 specifically in the heart restored mitochondrial morphology and rescued cardiac function.

    “In agreement, double deletion of Yme1L1 and OMA1, specifically in the heart, restored mitochondrial morphology and rescued cardiac function [166].”
  • The recovery of cardiac function and lifespan in mice lacking YME1L in both cardiomyocytes and skeletal muscle is because loss of YME1L in skeletal muscle and consequent mitochondrial dysfunction triggers systemic glucose intolerance and lowers insulin levels, preventing cardiac glucose overload and cardiomyopathy.

    “This recovery is because the loss of YME1L in skeletal muscle and the consequent mitochondrial dysfunction triggers systemic glucose intolerance and lowers insulin levels preventing cardiac glucose overload and cardiomyopathy [166].”

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Authors
Wai, T., García-Prieto, J., Baker, M. J., Merkwirth, C., Benit, P., Rustin, P., Rupérez, F. J., Barbas, C., Ibañez, B., & Langer, T.
Affiliations
  • University of Cologne (DE)
  • Myocardial Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain.
  • INSERM UMR 1141, Hôpital Robert Debré, Paris, France.
  • Inserm (FR)
  • Universidad San Pablo CEU (ES)
Corresponding author
  • Wai, Timothy
  • Langer, Thomas
Venue
Science
Published
2015-12-04
Volume
350
Issue
6265
Pages
aad0116-aad0116
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2190642228
Cited by
551
References
72
Citations by year
2026: 40 · 2025: 47 · 2024: 55 · 2023: 66 · 2022: 68 · 2021: 64 · 2020: 48 · 2019: 41 · 2018: 49 · 2017: 50 · 2016: 22 · 2015: 1
FWCI
17.67
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • Kölner Universitäts PublikationsServer (Universität zu Köln) (publishedVersion)
  • HAL (submittedVersion)
Funders
  • European Research Council
  • Deutsche Forschungsgemeinschaft
  • Spanish Ministry of Economy and Competitiveness (MINECO)
  • Human Frontiers Science Program
  • ERDF/FEDER
  • Networks for Cooperative Research in Health (RETIC) (RD12/0042/0054)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
Keywords
OPA1, mitochondrial fission, mitochondrial fusion, mitochondrial fragmentation, heart failure, cardiomyocytes, mitophagy, Parkin, postnatal heart development, myocardial metabolism, dilated cardiomyopathy, high-fat diet, mitochondrial quality control
MeSH terms
Animals, Cardiomyopathy, Dilated, Female, Heart, Heart Failure, Male, Metalloendopeptidases, Mitochondria, Heart, Myocardium, Gene Deletion, Mice, Knockout, Muscle, Skeletal, GTP Phosphohydrolases, Mitochondrial Proteins, Myocytes, Cardiac, Metalloproteases, Embryonic Development, Mice, Diet, High-Fat, Proteolysis, Mitochondrial Dynamics, Mitophagy

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