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摘要: Rab蛋白是一类小分子GTP结合蛋白,属于Ras蛋白超家族。目前,已经发现的Rab蛋白家族成员有70多个,广泛分布在多种生物细胞内不同的膜结构上,作为囊泡运输、蛋白质运输、膜靶向和融合的调节器,参与调节细胞生长、程序性死亡或凋亡。异常调控的Rab蛋白可通过破坏细胞膜运输、关键细胞信号通路和特殊分泌通路的稳态,进而影响癌症的细胞生理学。Rab27家族属于Rab蛋白家族,包括Rab27A和Rab27B两种亚型,二者具有相似但不相同的功能。Rab27A及Rab27B不但是调节囊泡运输的重要分子,而且与多种肿瘤的生长和侵袭转移有着紧密的联系,在肿瘤的治疗中可以作为治疗靶点和预后标志物。Rab27在肿瘤的发生发展中发挥重要作用。本文就Rab27在消化系统肿瘤中的研究进展进行综述。Abstract: Rab proteins are small GTP-binding proteins belonging to the Ras protein superfamily. To date, more than 70 Rab family members have been identified that are distributed in a wide range of different membrane structures in various cell types. They act as regulators of vesicle transport, protein transport, and membrane targeting and fusion and participate in regulating cell growth and programmed death (apoptosis). A large number of studies have shown that abnormally-regulated Rab proteins affect cell physiology in cancer by disrupting homeostasis in cell membrane transport, key cell signaling pathways, and specialized secretion pathways. The Rab27 subfamily belongs to the Rab protein family and includes Rab27A and Rab27B,which have similar but not identical functions. Rab27A and Rab27B are not only important molecules in regulating vesicular transport but are also closely related to growth, invasion, and metastasis in a variety of tumors and can be used as therapeutic targets and prognostic markers in tumor therapy. Steadily increasing evidence shows that Rab27 plays an indispensable role in the occurrence and development of tumors. This article reviews research progress in investigations of Rab27 in digestive system tumors.
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Key words:
- Rab27 protein /
- digestive tract tumor /
- exosome
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