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Contact Hypersensitivity as a Murine Model of Allergic Contact Dermatitis
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CD1d and CD1d-restricted iNKT-cells play a pivotal role in contact hypersensitivity

Edward E S Nieuwenhuis1, Silke Gillessen, Rik J Scheper

  • 1Gastrointestinal Division, Brigham and Women's Hospital, Boston, MA, USA.

Experimental Dermatology
|April 7, 2005
PubMed

CD1d-restricted T-cells are activated by glycolipids presented by the major histocompatibility complex class-Ib molecule CD1d, found on the surface of antigen-presenting cells (APC). This interaction between APC, most notably dendritic cells (DC), and CD1d-restricted T-cells is an important regulatory step in the initiation of adaptive immune responses. It is well known that DC play a crucial role in the induction of contact hypersensitivity (CHS), a frequently studied form of in vivo T-cell-mediated immunity. In this study, we show that CD1d-restricted T-cells are also necessary for CHS, because both wild-type mice treated systemically or topically with CD1d glycolipid antagonists and CD1d-restricted T-cell-null mice have markedly diminished CHS responses. Thus, pharmacologic antagonists of CD1d can be used as effective inhibitors of CHS, a prototype for a variety of delayed-type tissue hypersensitivity responses.

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