Cited by 179Mitochondrial Function and PathologyAutophagy in Disease and TherapyCell death mechanisms and regulation

Constriction of the mitochondrial inner compartment is a priming event for mitochondrial division

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Cho, Bongki, Cho, Hyo Min, Jo, Youhwa, Kim, Hee Dae, Song, Myungjae, Moon, Cheil, Kim, Hyongbum, Kim, Kyungjin +4 more·2017·Nature Communications

Abstract

Mitochondrial division is critical for the maintenance and regulation of mitochondrial function, quality and distribution. This process is controlled by cytosolic actin-based constriction machinery and dynamin-related protein 1 (Drp1) on mitochondrial outer membrane (OMM). Although mitochondrial physiology, including oxidative phosphorylation, is also important for efficient mitochondrial division, morphological alterations of the mitochondrial inner-membrane (IMM) have not been clearly elucidated. Here we report spontaneous and repetitive constriction of mitochondrial inner compartment (CoMIC) associated with subsequent division in neurons. Although CoMIC is potentiated by inhibition of Drp1 and occurs at the potential division spots contacting the endoplasmic reticulum, it appears on IMM independently of OMM. Intra-mitochondrial influx of Ca 2+ induces and potentiates CoMIC, and leads to K + -mediated mitochondrial bulging and depolarization. Synergistically, optic atrophy 1 (Opa1) also regulates CoMIC via controlling Mic60-mediated OMM–IMM tethering. Therefore, we propose that CoMIC is a priming event for efficient mitochondrial division.

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Authors
Cho, B., Cho, H. M., Jo, Y., Kim, H. D., Song, M., Moon, C., Kim, H., Kim, K., Sesaki, H., Rhyu, I. J., Kim, H., & Sun, W.
Affiliations
  • Daegu Gyeongbuk Institute of Science and Technology (KR)
  • Korea University (KR)
  • Seoul National University (KR)
  • Yonsei University (KR)
  • Johns Hopkins University (US)
Corresponding author
Sun, Woong
Venue
Nature Communications
Published
2017-06-09
Volume
8
Issue
1
Pages
15754-15754
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2621744935
Cited by
179
References
71
Citations by year
2026: 13 · 2025: 20 · 2024: 12 · 2023: 23 · 2022: 21 · 2021: 29 · 2020: 20 · 2019: 17 · 2018: 20 · 2017: 4
FWCI
6.81
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • YUHSpace (Yonsei University Medical Library) (submittedVersion, cc-by-nc-nd)
Funders
  • National Research Foundation (2015M3C7A1028790, NRF-2015M3C7A1028790)
  • Ulsan National Institute of Science and Technology
  • Ewha Womans University
  • Daegu Gyeongbuk Institute of Science and Technology
  • National Institutes of Health
  • National Institute of General Medical Sciences (R01GM089853)
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 division, Drp1, mitochondrial outer membrane, endoplasmic reticulum, calcium influx, mitochondrial depolarization, OPA1, Mic60, mitochondrial fusion, neurons
MeSH terms
Animals, Calcium, Humans, Microtubule-Associated Proteins, Mitochondria, Neurons, Rats, Sprague-Dawley, GTP Phosphohydrolases, Mitochondrial Proteins, Dynamins, Mitochondrial Membranes, Rats, Mitochondrial Dynamics

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