IL‐33 Facilitates Fibro‐Adipogenic Progenitors to Establish the Pro‐Regenerative Niche after Muscle Injury
Abstract: During the process of muscle regeneration post‐injury in adults, muscle stem cells (MuSCs) function is facilitated by neighboring cells within the pro‐regenerative niche. However, the precise mechanism triggering the initiation of signaling in the pro‐regenerative niche remains unknown. Using single‐cell RNA sequencing, 14 different muscle cells are comprehensively mapped during the initial stage following injury. Among these, macrophages and fibro‐adipogenic progenitor cells (FAPs) exhibit the most pronounced intercellular communication with other cells. In the FAP subclusters, the study identifies an activated FAP phenotype that secretes chemokines, such as CXCL1, CXCL5, CCL2, and CCL7, to recruit macrophages after injury. Il1rl1, encoding the protein of the interleukin‐33 (IL‐33) receptor, is identified as a highly expressed signature surface marker of the FAP phenotype. Following muscle injury, autocrine IL‐33, an alarmin, has been observed to activate quiescent FAPs toward this inflammatory phenotype through the IL1RL1‐MAPK/NF‐κB signaling pathway. Il1rl1 deficiency results in decreased chemokine expression and recruitment of macrophages, accompanied by impaired muscle regeneration. These findings elucidate a novel mechanism involving the IL‐33/IL1RL1 signaling pathway in promoting the activation of FAPs and facilitating muscle regeneration, which can aid the development of therapeutic strategies for muscle‐related disorders and injuries.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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IL‐33 Facilitates Fibro‐Adipogenic Progenitors to Establish the Pro‐Regenerative Niche after Muscle Injury ; day:22 ; month:07 ; year:2024 ; extent:15
Advanced science ; (22.07.2024) (gesamt 15)
- Urheber
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Zhang, Congcong
Li, Guoqi
Zhang, Fan
Zhang, Yanhong
Hong, Shiyao
Gao, Shijuan
Liu, Yan
Du, Jie
Li, Yulin
- DOI
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10.1002/advs.202405299
- URN
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urn:nbn:de:101:1-2407231423592.182131040642
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 11:00 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Zhang, Congcong
- Li, Guoqi
- Zhang, Fan
- Zhang, Yanhong
- Hong, Shiyao
- Gao, Shijuan
- Liu, Yan
- Du, Jie
- Li, Yulin
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