Cited by 69Autophagy in Disease and TherapyMuscle Physiology and DisordersDevelopmental Biology and Gene Regulation

Autophagy regulates cytoplasmic remodeling during cell reprogramming in a zebrafish model of muscle regeneration

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Saera-Vila, Alfonso, Kish, Phillip E., Louie, Ke'ale W., Grzegorski, Steven J., Klionsky, Daniel J., Kahana, Alon·2016·Autophagy

Abstract

Cell identity involves both selective gene activity and specialization of cytoplasmic architecture and protein machinery. Similarly, reprogramming differentiated cells requires both genetic program alterations and remodeling of the cellular architecture. While changes in genetic and epigenetic programs have been well documented in dedifferentiating cells, the pathways responsible for remodeling the cellular architecture and eliminating specialized protein complexes are not as well understood. Here, we utilize a zebrafish model of adult muscle regeneration to study cytoplasmic remodeling during cell dedifferentiation. We describe activation of autophagy early in the regenerative response to muscle injury, while blocking autophagy using chloroquine or Atg5 and Becn1 knockdown reduced the rate of regeneration with accumulation of sarcomeric and nuclear debris. We further identify Casp3/caspase 3 as a candidate mediator of cellular reprogramming and Fgf signaling as an important activator of autophagy in dedifferentiating myocytes. We conclude that autophagy plays a critical role in cell reprogramming by regulating cytoplasmic remodeling, facilitating the transition to a less differentiated cell identity.

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Authors
Saera-Vila, A., Kish, P. E., Louie, K. W., Grzegorski, S. J., Klionsky, D. J., & Kahana, A.
Affiliations
University of Michigan (US)
Corresponding author
Kahana, Alon
Venue
Autophagy
Published
2016-09-14
Volume
12
Issue
10
Pages
1864-1875
ISSN
  • 1554-8627 (ISSN-L)
  • 1554-8635
OpenAlex
W2502770985
Cited by
69
References
53
Citations by year
2026: 4 · 2025: 13 · 2024: 4 · 2023: 4 · 2022: 7 · 2021: 10 · 2020: 9 · 2019: 4 · 2018: 9 · 2017: 4 · 2016: 1
FWCI
5.63
Type
journal article
Language
en
Open access
Locations
  • Autophagy (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Figshare (submittedVersion, cc-by)
  • Figshare (cc-by)
Funders
  • National Eye Institute (R01EY022633, P30EY007003)
  • National Cancer Institute (P30CA046592)
  • National Institute of General Medical Sciences (R01GM053396)
  • National Institute of Dental and Craniofacial Research (T32DE007057)
  • National Center for Research Resources (P40RR012546)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
cellular reprogramming, muscle regeneration, dedifferentiation, caspase-3, FGF signaling, nuclear debris, ATG5, Beclin-1, chloroquine, zebrafish
MeSH terms
Animals, Autophagy, Cytoplasm, Energy Metabolism, Fibroblast Growth Factors, Models, Biological, Oculomotor Muscles, Regeneration, Zebrafish, Up-Regulation, Apoptosis, Cellular Reprogramming

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