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Delta-Like 4 Activates Notch 3 to Regulate Self-Renewal in Skeletal Muscle Stem Cells

Low, S; Barnes, JL; Zammit, PS; Beauchamp, JR; (2018) Delta-Like 4 Activates Notch 3 to Regulate Self-Renewal in Skeletal Muscle Stem Cells. STEM CELLS , 36 (3) pp. 458-466. 10.1002/stem.2757. Green open access

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Abstract

Notch signaling is essential to maintain skeletal muscle stem cells in quiescence. However, the precise roles of different Notch receptors are incompletely defined. Here, we demonstrate a role for Notch3 (N3) in the self‐renewal of muscle stem cells. We found that N3 is active in quiescent C2C12 reserve cells (RCs), and N3 over‐expression and knockdown studies in C2C12 and primary satellite cells reveal a role in self‐renewal. The Notch ligand Delta‐like 4 (Dll4) is expressed by newly formed myotubes and interaction with this ligand is sufficient to maintain N3 activity in quiescent C2C12 RCs to prevent activation and progression into the cell cycle. Thus, our data suggest a model whereby during regeneration, expression of Dll4 by nascent muscle fibers triggers N3 signaling in associated muscle stem cells to recruit them to quiescence, thereby renewing the stem cell pool.

Type: Article
Title: Delta-Like 4 Activates Notch 3 to Regulate Self-Renewal in Skeletal Muscle Stem Cells
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/stem.2757
Publisher version: https://doi.org/10.1002/stem.2757
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Life Sciences & Biomedicine, Cell & Tissue Engineering, Biotechnology & Applied Microbiology, Oncology, Cell Biology, Hematology, Notch, Skeletal muscle, Stem cells, Delta-like proteins, Self-renewal, SATELLITE CELLS, DIFFERENTIATION, HETEROGENEITY, REGENERATION, MYOGENESIS, STATE, PAX7
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine > Respiratory Medicine
URI: http://discovery.ucl.ac.uk/id/eprint/10052083
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