Cited by 1,066Mitochondrial Function and PathologyAutophagy in Disease and TherapyCell death mechanisms and regulation

Mitochondrial fission factor Drp1 is essential for embryonic development and synapse formation in mice

Ishihara, Naotada, Nomura, Masatoshi, Jofuku, Akihiro, Kato, Hiroki, Suzuki, Satoshi O., Masuda, Keiji, Otera, Hidenori, Nakanishi, Yae +8 more·2009·Nature Cell Biology

Abstract

Mitochondrial morphology is dynamically controlled by a balance between fusion and fission. The physiological importance of mitochondrial fission in vertebrates is less clearly defined than that of mitochondrial fusion. Here we show that mice lacking the mitochondrial fission GTPase Drp1 have developmental abnormalities, particularly in the forebrain, and die after embryonic day 12.5. Neural cell-specific (NS) Drp1(-/-) mice die shortly after birth as a result of brain hypoplasia with apoptosis. Primary culture of NS-Drp1(-/-) mouse forebrain showed a decreased number of neurites and defective synapse formation, thought to be due to aggregated mitochondria that failed to distribute properly within the cell processes. These defects were reflected by abnormal forebrain development and highlight the importance of Drp1-dependent mitochondrial fission within highly polarized cells such as neurons. Moreover, Drp1(-/-) murine embryonic fibroblasts and embryonic stem cells revealed that Drp1 is required for a normal rate of cytochrome c release and caspase activation during apoptosis, although mitochondrial outer membrane permeabilization, as examined by the release of Smac/Diablo and Tim8a, may occur independently of Drp1 activity.

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Crossref · 10.1038/ncb1907

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Authors
Ishihara, N., Nomura, M., Jofuku, A., Kato, H., Suzuki, S. O., Masuda, K., Otera, H., Nakanishi, Y., Nonaka, I., Goto, Y.-I., Taguchi, N., Morinaga, H., Maeda, M., Takayanagi, R., Yokota, S., & Mihara, K.
Affiliations
  • Tokyo Medical and Dental University (JP)
  • Kyushu University (JP)
  • National Institute of Neuroscience (JP)
  • Research Institute for Microbial Diseases, The University of Osaka (JP)
  • Nagasaki International University (JP)
Corresponding author
Mihara, Katsuyoshi
Venue
Nature Cell Biology
Published
2009-07-05
Volume
11
Issue
8
Pages
958-966
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W2094162211
Cited by
1,066
References
55
Citations by year
2026: 36 · 2025: 41 · 2024: 60 · 2023: 67 · 2022: 64 · 2021: 85 · 2020: 76 · 2019: 66 · 2018: 73 · 2017: 72 · 2016: 70 · 2015: 64 · 2014: 67 · 2013: 58 · 2012: 78
FWCI
22.17
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
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
Drp1, mitochondrial fission, mitochondrial GTPase, embryonic development, synaptogenesis, neuronal polarity, mitochondrial morphology, mitochondrial fusion, mitochondrial aggregation, apoptosis, cytochrome c release, caspase activation, mitochondrial outer membrane permeabilization, Smac/DIABLO, forebrain development, axonal mitochondria
MeSH terms
Animals, Animals, Newborn, Brain, Cell Line, Cells, Cultured, Embryo, Mammalian, Female, Fibroblasts, Immunohistochemistry, Luminescent Proteins, Male, Mice, Inbred C57BL, Microscopy, Electron, Microscopy, Fluorescence, Mitochondria, Neurons, Synapses, Time Factors, Blotting, Western, Mice, Knockout, GTP Phosphohydrolases, Mitochondrial Proteins, Cytochromes c, Embryonic Development, Mice

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