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首页> 外文期刊>Cell biology international. >Adhesiveness of beta5 integrin variant lacking FNK767-769 is similar to that of the prototype containing FNKFNK764-769.
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Adhesiveness of beta5 integrin variant lacking FNK767-769 is similar to that of the prototype containing FNKFNK764-769.

机译:缺少FNK767-769的beta5整联蛋白变体的粘附力类似于包含FNKFNK764-769的原型的粘附力。

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摘要

Little is known about the functions of two different beta5 integrins: repeated-FNK (FNKFNK764-769) and single-FNK (FNK764-766) amino acid sequences in the cytoplasmic domain. We examined whether they occurred as germ line mutations or somatic mutations associated with neoplastic transformation, and whether there were functional alterations. Out of six cultured cell lines, only KATO-III cells had the single-FNK beta5 sequence. The single-FNK beta5 was found in 9 out of 79 patients with colon carcinoma, but no somatic mutations were detected in cancerous tissues. CHO cells were transformed with expression vectors containing single-FNK or repeated-FNK beta5 cDNA, which were derived from KATO-III cells. CHO cells transfected with single-FNK and repeated-FNK showed similar adhesiveness to, and proliferative activity on, vitronectin substrates.
机译:对于两种不同的β5整联蛋白的功能,人们所知甚少:胞质结构域中的重复FNK(FNKFNK764-769)和单FNK(FNK764-766)氨基酸序列。我们检查了它们是否是与肿瘤转化相关的种系突变或体细胞突变,以及是否存在功能改变。在六个培养的细胞系中,只有KATO-III细胞具有单个FNK beta5序列。在79例结肠癌患者中有9例发现了单FNK beta5,但在癌组织中未检测到体细胞突变。使用含有单个FNK或重复FNK beta5 cDNA的表达载体转化CHO细胞,该表达载体来自KATO-III细胞。用单FNK和重复FNK转染的CHO细胞显示与玻连蛋白底物相似的粘附性和增殖活性。

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