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Research Article
Drp1-mediated mitochondrial fission regulates calcium and F-actin dynamics during wound healing
Susana Ponte, Lara Carvalho, Maria Gagliardi, Isabel Campos, Paulo J. Oliveira, António Jacinto
Biology Open 2020 9: bio048629 doi: 10.1242/bio.048629 Published 3 May 2020
Susana Ponte
1CEDOC, Chronic Diseases Research Center, NOVA Medical School/Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal
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  • ORCID record for Susana Ponte
Lara Carvalho
1CEDOC, Chronic Diseases Research Center, NOVA Medical School/Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal
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Maria Gagliardi
1CEDOC, Chronic Diseases Research Center, NOVA Medical School/Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal
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Isabel Campos
2Animal Platforms, Champalimaud Centre for the Unknown, 1400-038 Lisboa, Portugal
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Paulo J. Oliveira
3CNC, Center for Neuroscience and Cell Biology, University of Coimbra, UC Biotech Building, 3060-197 Cantanhede, Portugal
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António Jacinto
1CEDOC, Chronic Diseases Research Center, NOVA Medical School/Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal
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  • For correspondence: antonio.jacinto@nms.unl.pt
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ABSTRACT

Mitochondria adapt to cellular needs by changes in morphology through fusion and fission events, referred to as mitochondrial dynamics. Mitochondrial function and morphology are intimately connected and the dysregulation of mitochondrial dynamics is linked to several human diseases. In this work, we investigated the role of mitochondrial dynamics in wound healing in the Drosophila embryonic epidermis. Mutants for mitochondrial fusion and fission proteins fail to close their wounds, indicating that the regulation of mitochondrial dynamics is required for wound healing. By live-imaging, we found that loss of function of the mitochondrial fission protein Dynamin-related protein 1 (Drp1) compromises the increase of cytosolic and mitochondrial calcium upon wounding and leads to reduced reactive oxygen species (ROS) production and F-actin defects at the wound edge, culminating in wound healing impairment. Our results highlight a new role for mitochondrial dynamics in the regulation of calcium, ROS and F-actin during epithelial repair.

Footnotes

  • Competing interests

    The authors declare no competing or financial interests.

  • Author contributions

    Conceptualization: S.P., L.C., M.G., I.C., A.J.; Methodology: S.P., L.C.; Formal analysis: S.P., L.C.; Investigation: S.P., L.C., M.G., I.C.; Writing - original draft: S.P., L.C.; Writing - review & editing: S.P., L.C., M.G., P.J.O., A.J.; Visualization: S.P., L.C.; Supervision: P.J.O., A.J.; Project administration: L.C., A.J.; Funding acquisition: L.C., A.J.

  • Funding

    This work was supported by national funds through FCT - Fundação para a Ciência e a Tecnologia, I.P., in the context of a program contract to L.C. (4, 5 and 6 of article 23.° of D.L. no. 57/2016 of 29 August, as amended by Law no. 57/2017 of 19 July), PD/BD/106058/2015 to S.P. and PTDC/BIA-BID/29709/2017; the European Research Council [2007-StG-208631] and CONGENTO LISBOA-01-0145-FEDER-022170.

  • Supplementary information

    Supplementary information available online at http://bio.biologists.org/lookup/doi/10.1242/bio.048629.supplemental

  • Received October 7, 2019.
  • Accepted March 9, 2020.
  • © 2020. Published by The Company of Biologists Ltd
http://creativecommons.org/licenses/by/4.0

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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Keywords

  • Drp1
  • F-actin
  • Calcium
  • Mitochondria
  • Mitochondrial dynamics
  • Wound healing

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Research Article
Drp1-mediated mitochondrial fission regulates calcium and F-actin dynamics during wound healing
Susana Ponte, Lara Carvalho, Maria Gagliardi, Isabel Campos, Paulo J. Oliveira, António Jacinto
Biology Open 2020 9: bio048629 doi: 10.1242/bio.048629 Published 3 May 2020
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Research Article
Drp1-mediated mitochondrial fission regulates calcium and F-actin dynamics during wound healing
Susana Ponte, Lara Carvalho, Maria Gagliardi, Isabel Campos, Paulo J. Oliveira, António Jacinto
Biology Open 2020 9: bio048629 doi: 10.1242/bio.048629 Published 3 May 2020

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