Activated skin γδ T-cells regulate T-cell infiltration of the wound site after burn

Meenakshi Rani, Qiong Zhang, Michael R. Scherer, Andrew P. Cap, Martin G. Schwacha

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Burn induces an immunopathological response involving multiple immune cell types that includes γδ T-cells. Nonetheless, the role of γδ T-cells at the wound site after burn is not clearly defined. Wild type and γδ T-cell receptor deficient (δ TCR-/-) mice were subjected to a major burn or sham procedure. At 1-7 d thereafter, skin samples were collected and T-cell populations analyzed. The majority of T-cells in the skin of sham mice were γδ T-cells. After burn, however, an increase in the total T-cells was observed at the wound site and these cells were predominantly αβ T-cells. Their influx was γδ T-cell dependent, as it was markedly reduced in injured δ TCR-/- mice. Burn wound γδ T-cells were activated with increased expression of TLRs and CD69. In contrast, the infiltrating αβ T-cells TLR and CD69 expressions were attenuated after burn. Thus, burn is associated with of γδ T-cell activation at the injury site, which initiates a massive infiltration of the wound with αβ T-cells that likely facilitate the transition from the inflammatory to the proliferative phase of healing.

Original languageEnglish (US)
Pages (from-to)140-150
Number of pages11
JournalInnate Immunity
Volume21
Issue number2
DOIs
StatePublished - Feb 8 2015

Keywords

  • CD69
  • Injury
  • Toll-like receptors
  • inflammation
  • trauma

ASJC Scopus subject areas

  • Microbiology
  • Immunology
  • Molecular Biology
  • Cell Biology
  • Infectious Diseases

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