Expression of selectin ligands by cutaneous squamous cell carcinoma.

Expression of selectin ligands by cutaneous squamous cell carcinoma.
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皮肤鳞状细胞癌选择素配体的表达。

DOI:
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发表时间:
1993
影响因子:
6
通讯作者:
D. Macdonald
D. Macdonald
中科院分区:
医学2区
文献类型:
--
作者:
R. Groves;M. Allen;E. Ross;G. Ahsan;J. Barker;D. Macdonald

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最近的证据表明,内皮选择素和肿瘤表面选择素配体之间的相互作用可能在癌症转移中很重要。为了研究这种机制在皮肤肿瘤中的作用,我们对整个皮肤活检进行了免疫组织化学检查,以了解多种选择素配体,包括唾液酸-Lewis-X、唾液酸-Lewis-A (S-Le(a))、脑硫苷脂和CD15。在 12 个鳞状细胞癌 (SCC) 中的 12 个中,表达唾液酸-Lewis-X 和 CD15,但没有肿瘤表达 S-Le(a)。 12 个 SCC 中的 8 个偶尔有角质形成细胞表达硫苷脂。在基底细胞癌(BCC,n = 8)和正常皮肤(n = 8)的角质形成细胞上,除一个表达 S-Le(a) 的 BCC 外,所有选择素配体均不存在。 E-选择素不存在于正常皮肤中,但在鳞状细胞癌和基底细胞癌中的真皮内皮中强烈表达。通过流式细胞术对角质形成细胞系 A431、HaCaT 和 SVK14 进行了研究,结果表明这三种细胞均表达唾液酸-Lewis-X 和 S-Le(a),而正常人角质形成细胞不表达这些分子。这些发现表明选择素介导的事件在早期和晚期转移中具有潜在作用,并且BCC和SCC这些配体的差异表达可能解释了前者相对较低的转移潜力。
Recent evidence suggests that interactions between endothelial selectins and tumor surface selectin ligands may be of importance in cancer metastasis. To investigate the role of such mechanisms in cutaneous tumors, whole skin biopsies were examined immunohistochemically for a variety of selectin ligands including sialyl-Lewis-X, sialyl-Lewis-A (S-Le(a)), sulfatides, and CD15. In 12 of 12 squamous cell carcinomas (SCCs), there was expression of sialyl-Lewis-X and CD15, but no tumor expressed S-Le(a). Occasional keratinocytes in eight of 12 SCCs expressed sulfatides. All selectin ligands were absent on keratinocytes in basal cell carcinomas (BCCs, n = 8) and normal skin (n = 8), with the exception of one BCC that expressed S-Le(a). E-selectin was not present in normal skin, but was strongly expressed by dermal endothelium in both SCC and BCC. Keratinocyte cell lines A431, HaCaT, and SVK14 were investigated by flow cytometry, which demonstrated sialyl-Lewis-X and S-Le(a) expression by all three, whereas normal human keratinocytes did not express these molecules. These findings suggest a potential role for selectin-mediated events in early and late metastasis, and differential expression of these ligands by BCC and SCC may explain the relatively low metastatic potential of the former.
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发表时间: 1992-06
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影响因子: --
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发表时间: 1992
期刊: The Journal of investigative dermatology
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发表时间: 1990-11-23
期刊: SCIENCE
影响因子: 56.9
作者:
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唾液酸 Le(a) 和唾液酸 Le(X) 共有的碳水化合物结构域可被内皮细胞白细胞粘附分子 ELAM-1 识别。
DOI: --
发表时间: 1991
期刊: The Journal of biological chemistry
影响因子: --
作者:
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