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Autocrine and Paracrine Angiopoietin 1/Tie-2 Signaling Promotes Muscle Satellite Cell Self-Renewal

Open access
Abou-Khalil, Rana, Le Grand, Fabien, Pallafacchina, Giorgia, Valable, Samuel, Authier, François-Jérôme, Rudnicki, Michael A., Gherardi, Romain K., Germain, Stéphane, Chretien, Fabrice, Sotiropoulos, Athanassia, Lafuste, Peggy, Montarras, Didier, Chazaud, Bénédicte·2009·Cell Stem Cell

Abstract

SUMMARY Mechanisms governing muscle satellite cell withdrawal from cell cycle to enter into quiescence remain poorly understood. We studied the role of angiopoietin 1 (Ang1) and its receptor Tie-2 in the regulation of myogenic precursor cell (mpc) fate. In human and mouse, Tie-2 was preferentially expressed by quiescent satellite cells in vivo and reserve cells (RCs) in vitro. Ang1/Tie-2 signaling, through ERK1/2 pathway, decreased mpc proliferation and differentiation, increased the number of cells in G0, increased expression of RC-associated markers (p130, Pax7, Myf-5, M-cadherin), and downregulated expression of differentiation-associated markers. Silencing Tie-2 had opposite effects. Cells located in the satellite cell neighborhood (smooth muscle cells, fibroblasts) up-regulated RC-associated markers by secreting Ang1 in vitro. In vivo, Tie-2 blockade and Ang1 overexpression increased the number of cycling and quiescent satellite cells, respectively. We propose that Ang1/ Tie-2 signaling regulates mpc self-renewal by controlling the return to quiescence of a subset of satellite cells.

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Crossref · 10.1016/j.stem.2009.06.001

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Metadata

Authors
Abou-Khalil, R., Le Grand, F., Pallafacchina, G., Valable, S., Authier, F.-J., Rudnicki, M. A., Gherardi, R. K., Germain, S., Chretien, F., Sotiropoulos, A., Lafuste, P., Montarras, D., & Chazaud, B.
Venue
Cell Stem Cell
Publisher
Elsevier BV
Published
2009-09
Volume
5
Issue
3
Pages
298-309
ISSN
  • 1875-9777 (ISSN-L)
  • 1934-5909
OpenAlex
W2066123991
Cited by
235
References
8
FWCI
6.48
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Autocrine and Paracrine Angiopoietin 1/Tie-2 Signaling Promotes Muscle Satellite Cell Self-Renewal. https://app.cochat.ai/papers/10.1016/j.stem.2009.06.001
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Abou-Khalil, R., Le Grand, F., Pallafacchina, G., Valable, S., Authier, F.-J., Rudnicki, M. A., Gherardi, R. K., Germain, S., Chretien, F., Sotiropoulos, A., Lafuste, P., Montarras, D., & Chazaud, B. (2009). Autocrine and Paracrine Angiopoietin 1/Tie-2 Signaling Promotes Muscle Satellite Cell Self-Renewal. Cell Stem Cell. https://doi.org/10.1016/j.stem.2009.06.001

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.