Cited by 150Mitochondrial Function and PathologyAdipose Tissue and MetabolismAutophagy in Disease and Therapy

Subcellular connectomic analyses of energy networks in striated muscle

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Bleck, Christopher K. E., Kim, Yuho, Willingham, T. Bradley, Glancy, Brian·2018·Nature Communications

Abstract

Mapping biological circuit connectivity has revolutionized our understanding of structure-function relationships. Although connectomic analyses have primarily focused on neural systems, electrical connectivity within muscle mitochondrial networks was recently demonstrated to provide a rapid mechanism for cellular energy distribution. However, tools to evaluate organelle connectivity with high spatial fidelity within single cells are currently lacking. Here, we developed a framework to quantitatively assess mitochondrial network connectivity and interactions with cellular sites of energy storage, utilization, and calcium cycling in cardiac, oxidative, and glycolytic muscle. We demonstrate that mitochondrial network configuration, individual mitochondrial size and shape, and the junctions connecting mitochondria within each network are consistent with the differing contraction demands of each muscle type. Moreover, mitochondria-lipid droplet interaction analyses suggest that individual mitochondria within networks may play specialized roles regarding energy distribution and calcium cycling within the cell and reveal the power of connectomic analyses of organelle interactions within single cells.

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Authors
Bleck, C. K. E., Kim, Y., Willingham, T. B., & Glancy, B.
Affiliations
National Institutes of Health (US)
Corresponding author
Glancy, Brian
Venue
Nature Communications
Published
2018-11-30
Volume
9
Issue
1
Pages
5111-5111
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2903334028
Cited by
150
References
52
Citations by year
2026: 14 · 2025: 19 · 2024: 19 · 2023: 22 · 2022: 20 · 2021: 21 · 2020: 23 · 2019: 12
FWCI
4.98
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases
  • National Institute of Biomedical Imaging and Bioengineering
  • NHLBI Division of Intramural Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
striated muscle, connectomics, lipid droplets, calcium handling, energy distribution, myocardium, oxidative muscle, glycolytic muscle
MeSH terms
Animals, Calcium, Energy Metabolism, Male, Mice, Inbred C57BL, Mitochondria, Muscle, Skeletal, Mice, Muscle, Striated, Connectome

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