Negative elongation factor regulates muscle progenitor expansion for efficient myofiber repair and stem cell pool repopulation
Copyright © 2021 Elsevier Inc. All rights reserved..
Negative elongation factor (NELF) is a critical transcriptional regulator that stabilizes paused RNA polymerase to permit rapid gene expression changes in response to environmental cues. Although NELF is essential for embryonic development, its role in adult stem cells remains unclear. In this study, through a muscle-stem-cell-specific deletion, we showed that NELF is required for efficient muscle regeneration and stem cell pool replenishment. In mechanistic studies using PRO-seq, single-cell trajectory analyses and myofiber cultures revealed that NELF works at a specific stage of regeneration whereby it modulates p53 signaling to permit massive expansion of muscle progenitors. Strikingly, transplantation experiments indicated that these progenitors are also necessary for stem cell pool repopulation, implying that they are able to return to quiescence. Thus, we identified a critical role for NELF in the expansion of muscle progenitors in response to injury and revealed that progenitors returning to quiescence are major contributors to the stem cell pool repopulation.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:56 |
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| Enthalten in: |
Developmental cell - 56(2021), 7 vom: 05. Apr., Seite 1014-1029.e7 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Robinson, Daniel C L [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 23.08.2021 Date Revised 06.10.2021 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.devcel.2021.02.025 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Copyright © 2021 Elsevier Inc. All rights reserved. | ||
| 520 | |a Negative elongation factor (NELF) is a critical transcriptional regulator that stabilizes paused RNA polymerase to permit rapid gene expression changes in response to environmental cues. Although NELF is essential for embryonic development, its role in adult stem cells remains unclear. In this study, through a muscle-stem-cell-specific deletion, we showed that NELF is required for efficient muscle regeneration and stem cell pool replenishment. In mechanistic studies using PRO-seq, single-cell trajectory analyses and myofiber cultures revealed that NELF works at a specific stage of regeneration whereby it modulates p53 signaling to permit massive expansion of muscle progenitors. Strikingly, transplantation experiments indicated that these progenitors are also necessary for stem cell pool repopulation, implying that they are able to return to quiescence. Thus, we identified a critical role for NELF in the expansion of muscle progenitors in response to injury and revealed that progenitors returning to quiescence are major contributors to the stem cell pool repopulation | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a PEDF signaling | |
| 650 | 4 | |a muscle regeneration | |
| 650 | 4 | |a muscle stem cells | |
| 650 | 4 | |a nascent transcript stability | |
| 650 | 4 | |a p53 signaling | |
| 650 | 4 | |a promoter proximal pausing | |
| 650 | 4 | |a stem cell niche | |
| 650 | 4 | |a stem cell self-renewal | |
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| 700 | 1 | |a Ritso, Morten |e verfasserin |4 aut | |
| 700 | 1 | |a Nelson, Geoffrey M |e verfasserin |4 aut | |
| 700 | 1 | |a Mokhtari, Zeinab |e verfasserin |4 aut | |
| 700 | 1 | |a Nakka, Kiran |e verfasserin |4 aut | |
| 700 | 1 | |a Bandukwala, Hina |e verfasserin |4 aut | |
| 700 | 1 | |a Goldman, Seth R |e verfasserin |4 aut | |
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| 700 | 1 | |a Rudnicki, Michael A |e verfasserin |4 aut | |
| 700 | 1 | |a Adelman, Karen |e verfasserin |4 aut | |
| 700 | 1 | |a Dilworth, F Jeffrey |e verfasserin |4 aut | |
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