Cited by 425Muscle Physiology and DisordersDevelopmental Biology and Gene RegulationCongenital heart defects research

Cell heterogeneity upon myogenic differentiation: down-regulation of MyoD and Myf-5 generates ‘reserve cells

Yoshida, Naoko, Yoshida, Shosei, Koishi, Kyoko, Masuda, Kanjiro, Nabeshima, Yo-ichi·1998·Journal of Cell Science

Abstract

When a proliferating myoblast culture is induced to differentiate by deprivation of serum in the medium, a significant proportion of cells escape from terminal differentiation, while the rest of the cells differentiate. Using C2C12 mouse myoblast cells, this heterogeneity observed upon differentiation was investigated with an emphasis on the myogenic regulatory factors. The differentiating part of the cell population followed a series of well-described events, including expression of myogenin, p21(WAF1), and contractile proteins, permanent withdrawal from the cell cycle and cell fusion, whereas the rest of the cells did not initiate any of these events. Interestingly, the latter cells showed an undetectable or greatly reduced level of MyoD and Myf-5 expression, which had been originally expressed in the undifferentiated proliferating myoblasts. When these undifferentiated cells were isolated and returned to the growth conditions, they progressed through the cell cycle and regained MyoD expression. These cells demonstrated identical features with the original culture on the deprivation of serum. They produced both MyoD-positive differentiating and MyoD-negative undifferentiated populations once again. Thus the undifferentiated cells in the serum-deprived culture were designated 'reserve cells'. Upon serum deprivation, MyoD expression rapidly decreased as a result of down-regulation in approximately 50% of the cells. After this heterogenization, MyoD positive cells expressed myogenin, which is the earliest known event of terminal differentiation and marks irreversible commitment to this, while MyoD-negative cells did not differentiate and became the reserve cells. We also demonstrated that ectopic expression of MyoD converted the reserve cells to differentiating cells, indicating that down-regulation of MyoD is a causal event in the formation of reserve cells.

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Crossref · 10.1242/jcs.111.6.769

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  • The discovery of reserve cells generated during myogenic commitment more than 20 years ago first presented the idea that MuSCs might revert to earlier stages in the lineage progression under some conditions.

    “The discovery of reserve cells generated during myogenic commitment more than 20 years ago first presented the idea that MuSCs might revert to earlier stages in the lineage progression under some conditions (Yoshida et al., 1998).”

    From Aging induces aberrant state transition kinetics in murine muscle stem cells (2020) · cites this paper as Yoshida et al., 1998

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Authors
Yoshida, N., Yoshida, S., Koishi, K., Masuda, K., & Nabeshima, Y.-I.
Affiliations
  • The University of Tokyo (JP)
  • The University of Osaka (JP)
  • University of Otago (NZ)
  • National Center of Neurology and Psychiatry (JP)
Venue
Journal of Cell Science
Published
1998-03-15
Volume
111
Issue
6
Pages
769-779
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W2139352935
Cited by
425
References
52
Citations by year
2026: 13 · 2025: 3 · 2024: 11 · 2023: 13 · 2022: 18 · 2021: 21 · 2020: 15 · 2019: 10 · 2018: 15 · 2017: 20 · 2016: 10 · 2015: 23 · 2014: 14 · 2013: 20 · 2012: 21
FWCI
3.69
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cell Science (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Topics
  • 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
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Congenital heart defects research
Keywords
myogenesis, cellular heterogeneity, reserve cells, MyoD, Myf5, myoblasts, serum deprivation, myogenin, p21, cell cycle withdrawal, cell fusion, myogenic regulatory factors, C2C12 myoblasts, terminal differentiation
MeSH terms
Animals, Cell Differentiation, Cell Division, Cell Line, DNA-Binding Proteins, Muscle Proteins, Trans-Activators, Down-Regulation, Culture Media, Serum-Free, MyoD Protein, Myogenin, Muscle, Skeletal, Mice, Myogenic Regulatory Factor 5

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