Cited by 415Mitochondrial Function and PathologyAutophagy in Disease and TherapyCell death mechanisms and regulation

Preventing Mitochondrial Fission Impairs Mitochondrial Function and Leads to Loss of Mitochondrial DNA

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Parone, Philippe A., Da Cruz, Sandrine, Tondera, Daniel, Mattenberger, Yves, James, Dominic I., Maechler, Pierre, Barja, François, Martinou, Jean-Claude·2008·PLoS ONE

Abstract

Mitochondria form a highly dynamic tubular network, the morphology of which is regulated by frequent fission and fusion events. However, the role of mitochondrial fission in homeostasis of the organelle is still unknown. Here we report that preventing mitochondrial fission, by down-regulating expression of Drp1 in mammalian cells leads to a loss of mitochondrial DNA and a decrease of mitochondrial respiration coupled to an increase in the levels of cellular reactive oxygen species (ROS). At the cellular level, mitochondrial dysfunction resulting from the lack of fission leads to a drop in the levels of cellular ATP, an inhibition of cell proliferation and an increase in autophagy. In conclusion, we propose that mitochondrial fission is required for preservation of mitochondrial function and thereby for maintenance of cellular homeostasis.

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Crossref · 10.1371/journal.pone.0003257

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  • Lack of fission by downregulation of Drp1 expression leads to loss of mitochondrial DNA and a decrease in mitochondrial respiration in HeLa cells.

    “Lack of fission by downregulation of Drp1 expression leads to loss of mitochondrial DNA (mtDNA) and a decrease in mitochondrial respiration in HeLa cells (33).”
  • Depletion of Drp1 in HeLa cells results in mitochondrial dysfunction owing to a loss of mtDNA, suggesting that Drp1 is important for mitochondrial inheritance during cell division and for mitochondrial function.

    “Interestingly, depletion of Drp1 in HeLa cells also results in mitochondrial dysfunction owing to a loss of mtDNA, suggesting that Drp1 is also important for mitochondrial inheritance during cell division, as well as for mitochondrial function (Parone et al., 2008).”

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Authors
Parone, P. A., Da Cruz, S., Tondera, D., Mattenberger, Y., James, D. I., Maechler, P., Barja, F., & Martinou, J.-C.
Affiliations
University of Geneva (CH)
Corresponding author
Martinou, Jean-Claude
Venue
PLoS ONE
Published
2008-09-22
Volume
3
Issue
9
Pages
e3257
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2018019380
Cited by
415
References
46
Citations by year
2026: 5 · 2025: 12 · 2024: 16 · 2023: 13 · 2022: 15 · 2021: 27 · 2020: 25 · 2019: 19 · 2018: 31 · 2017: 25 · 2016: 19 · 2015: 27 · 2014: 31 · 2013: 42 · 2012: 40
FWCI
9.31
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Archive ouverte UNIGE (University of Geneva) (publishedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
Funders
  • National Science Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (109419, 3100A0-109419/1, 3100A0)
  • Oncosuisse
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
mitochondrial fission, Drp1, mitochondrial DNA loss, mitochondrial respiration, reactive oxygen species, mitochondrial dysfunction, ATP depletion, cell proliferation, autophagy, mitochondrial dynamics, cellular homeostasis
MeSH terms
Adenosine Triphosphate, Autophagy, DNA, Mitochondrial, Gene Expression Regulation, HeLa Cells, Homeostasis, Humans, Microtubule-Associated Proteins, Mitochondria, Models, Biological, Oxygen Consumption, Reactive Oxygen Species, GTP Phosphohydrolases, Mitochondrial Proteins, Dynamins, RNA Interference, Cell Proliferation, Membrane Potential, Mitochondrial

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