Rapid allergen-induced interleukin-17 and interferon-γ secretion by skin-resident memory CD8(+) T cells

TY - JOUR

T1 - Rapid allergen-induced interleukin-17 and interferon-γ secretion by skin-resident memory CD8(+) T cells

AU - Schmidt, Jonas D

AU - Ahlström, Malin G

AU - Johansen, Jeanne D

AU - Dyring-Andersen, Beatrice

AU - Agerbeck, Christina

AU - Nielsen, Morten M

AU - Poulsen, Steen S

AU - Woetmann, Anders

AU - Ødum, Niels

AU - Thomsen, Allan R

AU - Geisler, Carsten

AU - Bonefeld, Charlotte M

N1 - © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

PY - 2017/4/1

Y1 - 2017/4/1

N2 - BACKGROUND: Skin-resident memory T (TRM ) cells are associated with immunological memory in the skin. Whether immunological memory responses to allergens in the skin are solely localized to previously allergen-exposed sites or are present globally in the skin is not clear. Furthermore, the mechanisms whereby TRM cells induce rapid recall responses need further investigation.OBJECTIVES: To study whether contact allergens induce local and/or global memory, and to determine the mechanisms involved in memory responses in the skin.METHODS: To address these questions, we analysed responses to contact allergens in mice and humans sensitized to 2,4-dinitrofluorobenzene and nickel, respectively.RESULTS: Challenge responses in both mice and humans were dramatically increased at sites previously exposed to allergens as compared with previously unexposed sites. Importantly, the magnitude of the challenge response correlated with the epidermal accumulation of interleukin (IL)-17A-producing and interferon (IFN)-γ-producing TRM cells. Moreover, IL-17A and IFN-γ enhanced allergen-induced IL-1β production in keratinocytes.CONCLUSIONS: We show that sensitization with contact allergens induces a strong, long-lasting local memory and a weaker, temporary global immunological memory response to the allergen that is mediated by IL-17A-producing and IFN-γ-producing CD8(+) TRM cells.

AB - BACKGROUND: Skin-resident memory T (TRM ) cells are associated with immunological memory in the skin. Whether immunological memory responses to allergens in the skin are solely localized to previously allergen-exposed sites or are present globally in the skin is not clear. Furthermore, the mechanisms whereby TRM cells induce rapid recall responses need further investigation.OBJECTIVES: To study whether contact allergens induce local and/or global memory, and to determine the mechanisms involved in memory responses in the skin.METHODS: To address these questions, we analysed responses to contact allergens in mice and humans sensitized to 2,4-dinitrofluorobenzene and nickel, respectively.RESULTS: Challenge responses in both mice and humans were dramatically increased at sites previously exposed to allergens as compared with previously unexposed sites. Importantly, the magnitude of the challenge response correlated with the epidermal accumulation of interleukin (IL)-17A-producing and interferon (IFN)-γ-producing TRM cells. Moreover, IL-17A and IFN-γ enhanced allergen-induced IL-1β production in keratinocytes.CONCLUSIONS: We show that sensitization with contact allergens induces a strong, long-lasting local memory and a weaker, temporary global immunological memory response to the allergen that is mediated by IL-17A-producing and IFN-γ-producing CD8(+) TRM cells.

U2 - 10.1111/cod.12715

DO - 10.1111/cod.12715

M3 - Journal article

C2 - 27873334

SN - 0105-1873

VL - 76

SP - 218

EP - 227

JO - Contact Dermatitis

JF - Contact Dermatitis

IS - 4

ER -