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| 1 | Current understanding concerning intestinal stem cells显示文摘In mammals, the intestinal epithelium is a tissue that contains two distinct pools of stem cells: active intestinal stem cells and reserve intestinal stem cells. The former are located in the crypt basement membrane and are responsible for maintaining epithelial homeostasis under intact conditions, whereas the latter exhibit the capacity to facilitate epithelial regeneration after injury. These two pools of cells can convert into each other, maintaining their quantitative balance. In terms of the active intestinal stem cells, their development into functional epithelium is precisely controlled by the following signaling pathways: Wnt/β-catenin, Ras/Raf/Mek/Erk/MAPK, Notch and BMP/Smad. However, mutations in some of the key regulator genes associated with these signaling pathways, such as APC, Kras and Smad4, are also highly associated with gut malformations. At this point, clarifying the biological characteristics of intestinal stem cells will increase the feasibility of preventing or treating some intestinal diseases, such as colorectal cancer. Moreover, as preclinical data demonstrate the therapeutic effects of colon stem cells on murine models of experimental colitis, the prospects of stem cell-based regenerative treatments for ulcerous lesions in the gastrointestinal tract will be improved all the same. | Shuang Cui Peng-Yu Chang | 2016 | World Journal of Gastroenterology2016，22，31： | 6 |
| 2 | 大肠癌干细胞标记物及其相关信号通路的研究进展显示文摘存在于大肠癌组织中的大肠癌干细胞,虽只占极少部分,但其对大肠癌的发生、发展起关键作用。目前,关于大肠癌干细胞的研究主要集中于大肠癌干细胞的筛选和鉴定方面及大肠癌干细胞的产生机制等,关于大肠癌干细胞的标记物有CD44、CD133、CD24、CD26、富含亮氨酸G蛋白偶联受体5与乙醛脱氢酶1,大肠癌干细胞的相关信号通路包括Wnt、Hedgehog和Notch通路。这些信号通路在维持大肠癌干细胞生长及增殖中具有重要作用。 | 梅命珠 隋华 张怡 程悦蕾 柴妮 朱惠蓉 | 2015 | 山东医药2015，55，45： | 1 |
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