Dataset Information

Contact sensitizers trigger human CD1-autoreactive T-cell responses.

ABSTRACT: Allergic contact dermatitis is a primarily T-cell-mediated inflammatory skin disease induced by exposure to small molecular-weight haptens, which covalently bind to proteins. The abundance of cutaneous T cells that recognize CD1a antigen-presenting molecules raises the possibility that MHC-independent antigen presentation may be relevant in some hapten-driven immune responses. Here we examine the ability of contact sensitizers to influence CD1-restricted immunity. Exposure of human antigen-presenting cells such as monocyte-derived dendritic cells and THP-1 cells to the prototypical contact sensitizer dinitrochlorobenzene potentiated the response of CD1a- and CD1d-autoreactive T cells, which released a vast array of cytokines in a CD1- and TCR-dependent manner. The potentiating effects of dinitrochlorobenzene depended upon newly synthesized CD1 molecules and the presence of endogenous stimulatory lipids. Further examination of a broad panel of contact sensitizers revealed 1,4-benzoquinone, resorcinol, isoeugenol, and cinnamaldehyde to activate the same type of CD1-restricted responses. These findings provide a basis for the antigen-specific activation of skin-associated CD1-restricted T cells by small molecules and may have implications for contact sensitizer-induced inflammatory skin diseases.

SUBMITTER: Betts RJ

PROVIDER: S-EPMC5570453 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Contact sensitizers trigger human CD1-autoreactive T-cell responses.

Betts Richard J RJ Perkovic Adrijana A Mahapatra Subhashree S Del Bufalo Aurélia A Camara Kaddy K Howell Amy R AR Martinozzi Teissier Silvia S De Libero Gennaro G Mori Lucia L

European journal of immunology 20170523 7

Allergic contact dermatitis is a primarily T-cell-mediated inflammatory skin disease induced by exposure to small molecular-weight haptens, which covalently bind to proteins. The abundance of cutaneous T cells that recognize CD1a antigen-presenting molecules raises the possibility that MHC-independent antigen presentation may be relevant in some hapten-driven immune responses. Here we examine the ability of contact sensitizers to influence CD1-restricted immunity. Exposure of human antigen-prese ...[more]

PMID: 28440548

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Dataset Information

Contact sensitizers trigger human CD1-autoreactive T-cell responses.

Publications

Contact sensitizers trigger human CD1-autoreactive T-cell responses.

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