Role of MR1-driven signals and amphiregulin on the recruitment and repair function of MAIT cells during skin wound healing - Fondation pour la Recherche Médicale Accéder directement au contenu
Article Dans Une Revue (Article De Synthèse) Immunity Année : 2023

Role of MR1-driven signals and amphiregulin on the recruitment and repair function of MAIT cells during skin wound healing

Anastasia Du Halgouet
Yara El Morr
  • Fonction : Auteur
Selim Aractingi
  • Fonction : Auteur
Marion Salou
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Résumé

Tissue repair processes maintain proper organ function following mechanical or infection-related damage. In addition to antibacterial properties, mucosal associated invariant T (MAIT) cells express a tissue repair transcriptomic program and promote skin wound healing when expanded. Herein, we use a human-like mouse model of full-thickness skin excision to assess the underlying mechanisms of MAIT cell tissue repair function. Single-cell RNA sequencing analysis suggested that skin MAIT cells already express a repair program at steady state. Following skin excision, MAIT cells promoted keratinocyte proliferation, thereby accelerating healing. Using skin grafts, parabiosis, and adoptive transfer experiments, we show that MAIT cells migrated into the wound in a T cell receptor (TCR)-independent but CXCR6 chemokine receptor-dependent manner. Amphiregulin secreted by MAIT cells following excision promoted wound healing. Expression of the repair function was probably independent of sustained TCR stimulation. Overall, our study provides mechanistic insights into MAIT cell wound healing function in the skin.
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Origine : Publication financée par une institution
licence : CC BY NC ND - Paternité - Pas d'utilisation commerciale - Pas de modification

Dates et versions

pasteur-03956120 , version 1 (25-01-2023)

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Paternité - Pas d'utilisation commerciale - Pas de modification

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Anastasia Du Halgouet, Aurélie Darbois, Mansour Alkobtawi, Martin Mestdagh, Aurélia Alphonse, et al.. Role of MR1-driven signals and amphiregulin on the recruitment and repair function of MAIT cells during skin wound healing. Immunity, 2023, 56 (1), pp.78-92.e6. ⟨10.1016/j.immuni.2022.12.004⟩. ⟨pasteur-03956120⟩
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