The developmental pathway for CD103(+)CD8+ tissue-resident memory T cells of skin
Mackay, Laura K; Rahimpour, Azad; Ma, Joel Z; Collins, Nicholas; Stock, Angus T; Hafon, Ming-Li; Vega-Ramos, Javier; Lauzurica, Pilar; Mueller, Scott N; Stefanovic, Tijana; Tscharke, David C; Heath, William R; Inouye, Michael; Carbone, Francis R; Gebhardt, Thomas
Tissue-resident memory T cells (T(RM) cells) provide superior protection against infection in extralymphoid tissues. Here we found that CD103(+)CD8(+) T(RM) cells developed in the skin from epithelium-infiltrating precursor cells that lacked expression of the effector-cell marker KLRG1. A combination of entry into the epithelium plus local signaling by interleukin 15 (IL-15) and transforming growth factor-β (TGF-β) was required for the formation of these long-lived memory cells. Notably,...[Show more]
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