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Adhesion molecule expression in basal cell carcinoma

M Verhaegh1, R Beljaards, J Veraart

  • 1Department of Dermatology, University Hospital Maastricht, P Debyelaan 25, 6202 AZ Maastricht, The Netherlands.

European Journal of Dermatology : EJD
|July 3, 1998
PubMed
Summary
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The study found that basal cell carcinomas (BCCs) lack specific adhesion molecules on tumor and endothelial cells. This suggests that cell-mediated immunity does not play a significant role in controlling BCC tumor growth.

Area of Science:

  • Dermatology
  • Immunology
  • Oncology

Background:

  • Basal cell carcinomas (BCCs) often feature a peritumoral mononuclear infiltrate, but its role in tumor control remains unclear.
  • Understanding leukocyte adhesion mechanisms is crucial for deciphering local immune responses in cancer.

Purpose of the Study:

  • To investigate the expression and distribution of key adhesion molecules (ICAM-1, VCAM-1, E-selectin) and their receptors (LFA-1, VLA-4, CLA) in BCCs.
  • To determine the role of these molecules in the interaction between endothelial cells, tumor cells, and infiltrating leukocytes.

Main Methods:

  • Analysis of 33 BCCs across different histological subtypes.
  • Immunohistochemical assessment of adhesion molecule and receptor expression on microvascular endothelial cells, tumor cells, and infiltrating lymphocytes.

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Main Results:

  • Endothelial ICAM-1 expression was slightly increased in BCCs compared to normal skin.
  • Endothelial VCAM-1 and E-selectin expression was minimal or absent in BCCs.
  • Peritumoral infiltrates primarily consisted of LFA-1-expressing lymphocytes; VLA-4 and CLA expression was minimal.
  • BCC tumor cells did not exhibit significant adhesion molecule expression.

Conclusions:

  • The limited expression of adhesion molecules on BCC tumor cells and peritumoral vasculature does not support a significant role for specific cell-mediated immunity in limiting BCC progression.
  • Further research may be needed to explore alternative mechanisms influencing BCC tumor growth and immune surveillance.