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不同解离程序后肿瘤细胞表面蛋白的放射性碘化研究。

Radioiodination studies of tumour cell-surface proteins after different disaggregation procedures.

作者信息

Guy D, Latner A L, Turner G A

出版信息

Br J Cancer. 1977 Aug;36(2):166-72. doi: 10.1038/bjc.1977.173.

Abstract

The surface of single cells isolated from solid tumours by either a mechanical or an enzymatic method have been compared, using lactoperoxidase-catalyzed radioiodination of the tyrosine-containing proteins. Qualitatively, the patterns of surface labelling were similar, and duplicate experiments indicated that each method of isolation gave reproducible results. Analysis of incorporated label into 4 defined sections of the electrophoretic pattern illustrated quantitative differences. When the cells were isolated mechanically, the incorporation into low-mol.- wt. components was considerably reduced, whereas that into the high-mol.-wt. components was unaffected. Treatment of enzymatically isolated cells with trypsin also reduced incorporation into low-mol.-wt components.

摘要

通过机械或酶法从实体瘤中分离出的单细胞表面,已使用乳过氧化物酶催化的含酪氨酸蛋白放射性碘化进行了比较。定性地说,表面标记模式相似,重复实验表明每种分离方法都能给出可重复的结果。对电泳图谱4个定义部分中掺入的标记物进行分析,显示出定量差异。当细胞通过机械方法分离时,低分子量组分中的掺入量显著减少,而高分子量组分中的掺入量不受影响。用胰蛋白酶处理酶法分离的细胞也会减少低分子量组分中的掺入量。

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