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

ABSTRACT: 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

SUBMITTER: du Halgouet A 

PROVIDER: S-EPMC9839364 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature