Cited by 92Muscle Physiology and DisordersMitochondrial Function and PathologyDevelopmental Biology and Gene Regulation

Myofibril and mitochondria morphogenesis are coordinated by a mechanical feedback mechanism in muscle

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Avellaneda, Jerome, Rodier, Clement, Daian, Fabrice, Brouilly, Nicolas, Rival, Thomas, Luis, Nuno Miguel, Schnorrer, Frank·2021·Nature Communications

Published version of a preprint

Abstract

Complex animals build specialised muscles to match specific biomechanical and energetic needs. Hence, composition and architecture of sarcomeres and mitochondria are muscle type specific. However, mechanisms coordinating mitochondria with sarcomere morphogenesis are elusive. Here we use Drosophila muscles to demonstrate that myofibril and mitochondria morphogenesis are intimately linked. In flight muscles, the muscle selector spalt instructs mitochondria to intercalate between myofibrils, which in turn mechanically constrain mitochondria into elongated shapes. Conversely in cross-striated leg muscles, mitochondria networks surround myofibril bundles, contacting myofibrils only with thin extensions. To investigate the mechanism causing these differences, we manipulated mitochondrial dynamics and found that increased mitochondrial fusion during myofibril assembly prevents mitochondrial intercalation in flight muscles. Strikingly, this causes the expression of cross-striated muscle specific sarcomeric proteins. Consequently, flight muscle myofibrils convert towards a partially cross-striated architecture. Together, these data suggest a biomechanical feedback mechanism downstream of spalt synchronizing mitochondria with myofibril morphogenesis.

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Authors
Avellaneda, J., Rodier, C., Daian, F., Brouilly, N., Rival, T., Luis, N. M., & Schnorrer, F.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
  • Luis, Nuno Miguel
  • Schnorrer, Frank
Venue
Nature Communications
Published
2021-04-07
Volume
12
Issue
1
Pages
2091-2091
ISSN
2041-1723 (ISSN-L)
OpenAlex
W3146153743
Cited by
92
References
65
Citations by year
2026: 10 · 2025: 14 · 2024: 23 · 2023: 19 · 2022: 16 · 2021: 10
FWCI
5.33
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • HAL (submittedVersion)
  • HAL (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Aix-Marseille Université (ANR 11-IDEX-0001-02)
  • European Commission (2007–2013, FP/2007-2013)/ERC, FP/2007/2013)
  • Agence Nationale de la Recherche (ANR-11-IDEX-0001, ANR11IDEX000102, ANR-18-CE45-0016, ANR-10-INBS-04-01, 10-INBS-04-01, ANR‐10_INBS‐04, ANR18, ANR-11-IDEX, FP/2007-2013, ANR-10, IDEX-0001-02, ANR-16-ACHN-0015)
  • Centre National de la Recherche Scientifique (ANR-11-IDEX-0001-02)
  • National Institutes of Health (FP/2007-2013, -0001, NIH P40OD018537, P40OD018537)
  • FP7 Ideas: European Research Council (310939)
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
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
mitochondrial morphogenesis, spalt, mitochondrial fusion, mitochondrial dynamics, striated muscle, flight muscle, lower limb muscles, biomechanical feedback, Drosophila muscle
MeSH terms
Animals, Biomechanical Phenomena, Drosophila, Drosophila melanogaster, Feedback, Flight, Animal, Male, Mitochondria, Morphogenesis, Myofibrils, Sarcomeres, Transcription Factors, Myogenic Regulatory Factors, Muscle, Skeletal, Muscle Development, Drosophila Proteins, Mechanical Phenomena

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