Cited by 1,129Mitochondrial Function and PathologyAutophagy in Disease and TherapyCell death mechanisms and regulation

Dephosphorylation by calcineurin regulates translocation of Drp1 to mitochondria

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Cereghetti, G. M., Stangherlin, A., de Brito, O. Martins, Chang, C. R., Blackstone, C., Bernardi, P., Scorrano, L.·2008·Proceedings of the National Academy of Sciences

Abstract

Changes in mitochondrial morphology that occur during cell cycle, differentiation, and death are tightly regulated by the balance between fusion and fission processes. Excessive fragmentation can be caused by inhibition of the fusion machinery and is a common consequence of dysfunction of the organelle. Here, we show a role for calcineurin-dependent translocation of the profission dynamin related protein 1 (Drp1) to mitochondria in dysfunction-induced fragmentation. When mitochondrial depolarization is associated with sustained cytosolic Ca 2+ rise, it activates the cytosolic phosphatase calcineurin that normally interacts with Drp1. Calcineurin-dependent dephosphorylation of Drp1, and in particular of its conserved serine 637, regulates its translocation to mitochondria as substantiated by site directed mutagenesis. Thus, fragmentation of depolarized mitochondria depends on a loop involving sustained Ca 2+ rise, activation of calcineurin, and dephosphorylation of Drp1 and its translocation to the organelle.

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Crossref · 10.1073/pnas.0808249105

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  • The downstream ROCK target calcineurin can dephosphorylate Drp1 and cause mitochondrial fission.

    “Interestingly, the downstream ROCK target calcineurin can dephosphorylate Drp1 and cause mitochondrial fission [135,136].”

    From RhoA Signaling in Neurodegenerative Diseases (2022) · cites this paper as [135]

    The Discussion and Results (page numbers unavailable in our copy) support that calcineurin dephosphorylates Drp1 and promotes Drp1-dependent mitochondrial fission. They do not establish the claim that calcineurin is a downstream ROCK target. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • The activation of cAMP/PKA upon nutrient starvation leads to phosphorylation of Drp1, preventing its stable docking on the mitochondrial surface and therefore mitochondrial fission.

    “The activation of cAMP/PKA upon nutrient starvation leads to phosphorylation of Drp1, preventing its stable docking on the mitochondrial surface and therefore mitochondrial fission (Cereghetti et al, 2008) (Fig 2A).”

    From Mitochondrial response to nutrient availability and its role in metabolic disease (2014) · cites this paper as Cereghetti et al, 2008

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Authors
Cereghetti, G. M., Stangherlin, A., de Brito, O. M., Chang, C. R., Blackstone, C., Bernardi, P., & Scorrano, L.
Affiliations
  • Veneto Institute of Molecular Medicine (IT)
  • *Dulbecco-Telethon Institute;
  • National Institutes of Health (US)
  • University of Padua (IT)
Venue
Proceedings of the National Academy of Sciences
Published
2008-10-14
Volume
105
Issue
41
Pages
15803-15808
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2023283007
Cited by
1,129
References
35
Citations by year
2026: 40 · 2025: 51 · 2024: 54 · 2023: 79 · 2022: 67 · 2021: 79 · 2020: 92 · 2019: 60 · 2018: 86 · 2017: 78 · 2016: 80 · 2015: 59 · 2014: 68 · 2013: 58 · 2012: 54
FWCI
16.44
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Archive ouverte UNIGE (University of Geneva) (acceptedVersion)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
  • Padua Research Archive (University of Padova) (submittedVersion, other-oa)
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
calcineurin, Drp1, mitochondrial fission, mitochondrial depolarization, mitochondrial fragmentation, intracellular calcium, mitochondrial morphology, mitochondrial fusion
MeSH terms
Calcium, HeLa Cells, Humans, Microtubule-Associated Proteins, Mitochondria, Phosphorylation, Serine, Mutagenesis, Site-Directed, Calcineurin, GTP Phosphohydrolases, Protein Transport, Mitochondrial Proteins, Dynamins, Membrane Potential, Mitochondrial

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