Britta C Martel1,2,3, Beatrice Dyring-Andersen4, Lone Skov4, Kristian Thestrup-Pedersen4, Søren Skov5, Kresten Skak6, Lars K Poulsen4. 1. Department of Dermato-Allergology, Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark. bcmartel@NCSU.edu. 2. Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. bcmartel@NCSU.edu. 3. LEO Pharma A/S, Ballerup, Denmark. bcmartel@NCSU.edu. 4. Department of Dermato-Allergology, Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark. 5. Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. 6. LEO Pharma A/S, Ballerup, Denmark.
Abstract
OBJECTIVES: To investigate differences in expression of surface markers, cytokine profiles, and presence of CD4(+)CD8(+) T cells in skin-derived T cell cultures from patients with extrinsic atopic dermatitis (AD), intrinsic AD, and psoriasis expanded in the presence of IL-2 and IL-4. MATERIAL: Skin biopsies from patients with extrinsic AD (n = 6), intrinsic AD (n = 9) and psoriasis (n = 9). METHODS: Skin-derived T cell cultures were analyzed for expression of six surface markers, 11 intracellular cytokines, and three T cell subtype signature transcription factors by flow cytometry, and secreted cytokines by multiplex. RESULTS: A different IFN-γ profile emerged between the extrinsic AD and psoriatic T cell cultures; however, there was no difference in IL-17 profile. No differences with regard to cytokine expression were found between extrinsic AD and intrinsic AD cultures; however, cutaneous lymphocyte-associated antigen was expressed by a higher percentage of CD8(+) than CD4(+) T cells in the intrinsic AD cultures. Double-positive CD4(+)CD8(+) T cells were only detected in two out of 15 AD cultures. CONCLUSION: The data suggest that IL-2 and IL-4 affects the cytokine profile during culture. Earlier findings of substantial levels of double-positive CD4(+)CD8(+) T cells in skin derived T cell cultures from AD skin was not reproduced in this study.
OBJECTIVES: To investigate differences in expression of surface markers, cytokine profiles, and presence of CD4(+)CD8(+) T cells in skin-derived T cell cultures from patients with extrinsic atopic dermatitis (AD), intrinsic AD, and psoriasis expanded in the presence of IL-2 and IL-4. MATERIAL: Skin biopsies from patients with extrinsic AD (n = 6), intrinsic AD (n = 9) and psoriasis (n = 9). METHODS: Skin-derived T cell cultures were analyzed for expression of six surface markers, 11 intracellular cytokines, and three T cell subtype signature transcription factors by flow cytometry, and secreted cytokines by multiplex. RESULTS: A different IFN-γ profile emerged between the extrinsic AD and psoriatic T cell cultures; however, there was no difference in IL-17 profile. No differences with regard to cytokine expression were found between extrinsic AD and intrinsic AD cultures; however, cutaneous lymphocyte-associated antigen was expressed by a higher percentage of CD8(+) than CD4(+) T cells in the intrinsic AD cultures. Double-positive CD4(+)CD8(+) T cells were only detected in two out of 15 AD cultures. CONCLUSION: The data suggest that IL-2 and IL-4 affects the cytokine profile during culture. Earlier findings of substantial levels of double-positive CD4(+)CD8(+) T cells in skin derived T cell cultures from AD skin was not reproduced in this study.
Authors: A R Ellingsen; F B Sørensen; J O Larsen; M S Deleuran; K Thestrup-Pedersen Journal: Acta Derm Venereol Date: 2001 Aug-Sep Impact factor: 4.437
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