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Role of beta 1-integrins in epidermotropism of malignant T cells

Sterry, Wolfram
Mielke, V.
Konter, U.
Kellner, I.
Published in The American Journal of Pathology. 1992, vol. 141, no. 4, p. 855-860
Abstract To better understand the molecular mechanisms of epidermotropism, we immunohistochemically analyzed the expression pattern of adhesion molecules belonging to the integrin and immunoglobulin superfamilies in cases of mycosis fungoides (MF) (n = 15), pleomorphic T cell lymphoma (n = 10), and high-grade T cell lymphoma (n = 7). The cutaneous T cell lymphomas (CTCLs) investigated were categorized into cases with or without epidermotropism. Focal neoexpression of ICAM-1 on keratinocytes was restricted to epidermotropic lymphomas. Both LFA-1 and LFA-3 were expressed on infiltrating cells in all cases investigated. In contrast, beta 1-integrins showed differential expression, most prominent in the case of VLA-1 and VLA-6: These molecules were present on infiltrating cells in most cases with epidermotropic MF and absent in most other CTCLs. We conclude that the phenomenon of epidermotropism might involve different sets of adhesion molecules in different entities of CTCL, with VLA-1 being the most influential beta 1-integrin in the case of MF.
Keywords Antibodies, MonoclonalAntigens, CD29Cell Adhesion Molecules/metabolismHumansImmunohistochemistryIntegrins/*physiologyIntercellular Adhesion Molecule-1Lymphoma, T-Cell/*metabolismMycosis Fungoides/*metabolismReceptors, Very Late Antigen/metabolismSkin/*metabolismSkin Neoplasms/*metabolism
PMID: 1384339
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STERRY, Wolfram et al. Role of beta 1-integrins in epidermotropism of malignant T cells. In: American Journal of Pathology, 1992, vol. 141, n° 4, p. 855-860.

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Deposited on : 2013-09-20

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