Volume 30, Issue 12 pp. 3533-3541
Article
Free Access

Expression of cutaneous lymphocyte-associated antigen on human CD4+ and CD8+ Th2 cells

Mübeccel Akdis

Mübeccel Akdis

Swiss Institute of Allergy and Asthma Research (SIAF), Davos, Switzerland

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Sven Klunker

Sven Klunker

Swiss Institute of Allergy and Asthma Research (SIAF), Davos, Switzerland

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Michael Schliz

Michael Schliz

High Altitude Clinic, Wolfgang, Wolfgang-Davos, Switzerland

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Kurt Blaser

Kurt Blaser

Swiss Institute of Allergy and Asthma Research (SIAF), Davos, Switzerland

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Cezmi A. Akdis

Corresponding Author

Cezmi A. Akdis

Swiss Institute of Allergy and Asthma Research (SIAF), Davos, Switzerland

Swiss Institute of Allergy and Asthma Research (SIAF), Obere Strasse 22, CH-7270 Davos, Switzerland Fax: +41-81-4100840Search for more papers by this author

Abstract

The cutaneous lymphocyte-associated antigen (CLA) represents the homing receptor involved in selective migration of memory/effector T cells to the skin. Numerous reports demonstrated distinct CLA expression on Th1 cells. However, T cells isolated from skin lesions and CLA+ T cells circulating in peripheral blood of atopic dermatitis patients expressed high IL-5 and IL-13. Accordingly, we investigated the regulation of CLA on human type 1 and type 2 T cells. CLA was induced on freshly generated Th1 and Tc1 cells only, but not on those of type 2. Anti-CD3 stimulation was sufficient to induce CLA on Th2 cells in the absence of serum in the culture medium. In serum containing medium, IL-4 inhibited CLA and related α-fucosyltransferase mRNA expression. IL-12 and/or staphylococcal enterotoxin B (SEB) stimulation up-regulated CLA expression on either Th2 and Tc2 cells. On stimulation with IL-12, CLA was expressed on the surface of bee venom phospholipase A2-specific Th1, Th2, Th0 and T regulatory 1 clones, representing non-skin-related antigen-specific T cells. In addition, CLA could be re-induced on T cells that had lost CLA expression upon resting. These results suggest that skin-selective homing is not restricted to functional and phenotypic T cell subsets.

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