Expression of adhesion and activation molecules in human buccal epithelial cell lines and normal human buccal epithelium in situ
2001
: An in vitro culture system may be used to analyse interactions between T cells and epithelium. We have analysed two human buccal squamous epithelial cell lines: SqCC/Y1, derived from a buccal carcinoma, and SVpgC2a, an SV-transformed healthy buccal squamous epithelium. Under serum-free culture conditions, the cell lines resemble normal buccal squamous epithelium in situ in their expression of MHC class I, CD29 (β1 integrin), CD40, CD44, CD54 (ICAM-1), CD58 (LFA-3), CD95 (Fas), and E-cadherin. Furthermore, when the SVpgC2a cell line was treated with T-cell derived cytokines, upregulation of CD40 expression was observed when the cells were treated with IL-4, whereas IFN-γ caused upregulation in expression of CD40, CD54 and MHC class II. These buccal squamous epithelial cell lines, therefore, provide a good tool for analysing interactions between epithelium and T cells in vitro.
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