Desmosomal defects in acantholytic squamous cell carcinomas.

Desmosomal defects in acantholytic squamous cell carcinomas.
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DOI:
10.1111/cup.12390
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发表时间:
2014-11
影响因子:
1.7
通讯作者:
Koch PJ
Koch PJ
中科院分区:
医学4区
文献类型:
--
作者:
O'Shea C;Fitzpatrick JE;Koch PJ

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棘层松解性鳞状细胞癌(Acantholytic SCC)是一种上皮性肿瘤,其特征是肿瘤角质形成细胞之间的粘附性丧失。这些肿瘤细胞间黏附丧失的机制尚不清楚。用一组桥粒和黏附连接蛋白抗体对棘层松解性鳞癌(n=17)和常规鳞癌(n=16,无棘层松解的对照)进行了回顾性分析。免疫荧光显微镜观察黏附蛋白表达缺失的肿瘤。绝大多数棘层松解性鳞癌(89%)表现为至少一种桥粒细胞黏附蛋白的灶性丢失。最有趣的是,65%的这些肿瘤失去了两个或更多桥粒蛋白的表达。棘层松解性鳞状细胞癌中细胞黏附的丧失很可能与桥粒蛋白表达的局灶性丢失有关,从而为了解这种恶性肿瘤的发病机制提供了潜在的机制洞察。
Acantholytic squamous cell carcinoma (Acantholytic SCC) are epithelial tumors characterized by a loss of cell adhesion between neoplastic keratinocytes. The mechanism underlying loss of cell-cell adhesion in these tumors is not understood. A retrospective analysis of acantholytic SCC (n=17) and conventional SCC (n=16, controls not showing acantholysis) was conducted using a set of desmosomal and adherens junction protein antibodies. Immunofluorescence microscopy was used to identify tumors with loss of adhesion protein expression. The vast majority of acantholytic SCC (89%) showed focal loss of at least one desmosomal cell adhesion protein. Most interestingly, 65% of these tumors lost expression of two or more desmosomal proteins. Loss of cell adhesion in acantholytic SCC is most likely linked to the focal loss of desmosomal protein expression, thus providing potential mechanistic insight into the patho-mechanism underlying this malignancy.
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