DISTRIBUTION OF APOPTOSIS-MEDIATING FAS ANTIGEN IN HUMAN SKIN AND EFFECTS OF ANTI-FAS MONOCLONAL-ANTIBODY ON HUMAN EPIDERMAL KERATINOCYTE AND SQUAMOUS-CELL CARCINOMA CELL-LINES

被引:84
作者
OISHI, M [1 ]
MAEDA, K [1 ]
SUGIYAMA, S [1 ]
机构
[1] SAPPORO MED UNIV,SCH MED,DEPT DERMATOL,CHUO KU,SAPPORO,JAPAN
关键词
FAS ANTIGEN; IMMUNOHISTOCHEMICAL; SKIN DISEASE; KERATINOCYTES; ELECTRON MICROSCOPY;
D O I
10.1007/BF00371800
中图分类号
R75 [皮肤病学与性病学];
学科分类号
100206 ;
摘要
Fast antigen is a cell surface protein that mediates apoptosis. Using immunohistological, flow cytometry and electron microscopic analyses, we investigated the expression of Fas antigen on various skin tissues, and on cultured SV40-transformed human epidermal keratinocyte cell line KJD and human skin squamous cell carcinoma cell line HSC. The Fas antigen was widely distributed in skin components such as the keratinocytes in the lower portion of the epidermis, epidermal dendritic cells, endothelial cells, fibroblasts, apocrine glands, eccrine sweat glands, sebaceous glands, some normal melanocytes and infiltrating lymphoid cells. It was also strongly expressed on the keratinocytes of lichenoid eruptions seen in lupus erythematosus and lichen planus, and on the spongiotic or acanthotic epidermis seen in chronic eczema, adult T-cell leukaemia/lymphoma (ATLL) and atopic dermatitis. Its expression was closely correlated with lymphoid infiltrating cells and it was strongly expressed in lymphoid neoplastic cells, particularly, ATLL cells, and fibroblasts seen in dermatofibroma. However, the antigen was not detected on basal cell epithelioma cells, some malignant melanomas or any junctional naevi. The cell lines KJD and HSC strongly expressed the Fas antigen, and crosslinking of the Fas antigen by an anti-Fas monoclonal antibody induced apoptosis of these cell lines. These results indicate that the apoptosis-mediating Fas antigen may play an important role in normal skin turnover and cell differentiation, in immune regulation of skin tumours, and in the pathogenesis of various skin diseases.
引用
收藏
页码:396 / 407
页数:12
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