一株新型抗46 ku-细胞角蛋白的单特异性单克隆抗体(英文)

A Novel Monoclonal Antibody With aMono-specificity for a 46 ku-Cytokeratin

利用杂交瘤技术制备了一株单克隆抗体 T2-2,对其生化性质的研究及其与抗细胞角蛋白多克隆抗体完全重合的定位表明,该抗体特异性识别一种分子质量为 46 ku 的角蛋白. 对 68 例正常组织和 65 例肿瘤组织的免疫组化结果显示,单克隆抗体 T2-2 具有上皮细胞特异性. 与其他多数抗细胞角蛋白抗体常与一种以上细胞角蛋白多肽表现出交叉反应不同的是,该抗体只识别 46 ku 细胞角蛋白多肽上的某一单特异性表位. 另外,单克隆抗体 T2-2 适用于多种免疫实验技术,包括 ELISA、免疫组化、细胞免疫荧光及蛋白质印迹等,而且适用于多种固定剂. 以上结果表明,单克隆抗体 T2-2 将成为细胞角蛋白功能研究和肿瘤诊断的有力工具.

A mAb T2-2 was generated using hybridoma techniques, and its target was identified as a 46 ku-cytokeratin （CK）, based on biochemical study and a completely overlapped binding pattern of mAb T2-2 with anti-pan-CKs antibodies. An epithelia-specificity of the mAb T2-2 was determined by screening 68 human normal and 65 tumor tissues using immunohistochemistry. Unlike most of anti-CKs antibodies, the mAb T2-2 recognized a mono-specific epitope only expressed on the 46 ku CK, suggesting that mAb T2-2 is superior to most anti-CKs antibodies that cross-reacted with many different kinds of CKs. In addition, it was found that the mAb T2-2 was multipurpose with a broad applicability to ELISA, immunohistochemistry, immunofluorescence, Western blotting, and was also compatible with various fixation reagents. These results strongly indicate that the mAb T2-2 has potential applications for studying CKs function and for diagnosis of tumor and other disorders.