Rab25 as a tumour suppressor in colon carcinogenesis.

Rab25 as a tumour suppressor in colon carcinogenesis.
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DOI:
10.1038/sj.bjc.6605983
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发表时间:
2011-01-04
影响因子:
8.8
通讯作者:
--
中科院分区:
医学1区
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--
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最近的研究越来越关注细胞内囊泡运输在上皮极性和转化调节中的作用。 Rab25 是小 GTP 酶 Rab 家族的上皮特异性成员,已与多种上皮癌相关。 Rab25 过度表达与卵巢癌侵袭行为相关,而 Rab25 表达在人类结肠癌中下降,与分期无关。最近对小鼠肠道和结肠肿瘤模型的研究表明,Rab25 缺陷显着促进肿瘤的发展。其中一些效应似乎与 β1-整合素运输至细胞表面的改变有关。这些发现都表明 Rab25 是结肠肿瘤的肿瘤抑制因子。
Recent investigations have increasingly focussed attention on the roles of intracellular vesicle trafficking in the regulation of epithelial polarity and transformation. Rab25, an epithelial-specific member of the Rab family of small GTPases, has been associated with several epithelial cancers. Whereas Rab25 overexpression is associated with ovarian cancer aggressive behaviour, Rab25 expression is decreased in human colon cancers independent of stage. Recent studies of mouse models of intestinal and colonic neoplasia have demonstrated that Rab25 deficiency markedly promotes the development of neoplasia. Some of these effects appear related to alterations in β1-integrin trafficking to the cell surface. These findings all suggest that Rab25 is a tumour suppressor for colonic neoplasia.
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