肠道干细胞异质性和恒常性的高级进展
Minqiong Sun1, Zhenya Tan1, Keqiong Lin1
1Department of Pathophysiology, Anhui Medical University, Hefei, Anhui, China.
Stem cell reviews and reports
|June 23, 2023
概括
富含白的重复含有G蛋白结合受体5 (LGR5) 阳性肠干细胞 (ISC) 的异质性是了解结肠癌的关键. 新的研究澄清了ISC在恒温和瘤发生中的作用,提供了治疗途径.
科学领域:
- 胃肠病学和肝病学
- 干细胞生物学 干细胞生物学
- 癌症研究 癌症研究
背景情况:
- 富含白的重复含有G蛋白结合受体5 (LGR5) 是肠干细胞 (ISC) 的一个成熟的标记物.
- 然而,在肠道疾病中,ISC异质性和恒温的含义仍然不太清楚.
- 之前的研究表明,ISC池异质性,疾病发病和癌症治疗反应之间存在联系.
研究的目的:
- 为了澄清ISC在肠道平衡和瘤发生中的复杂作用.
- 确定新的ISC种群和调节ISC命运的关键因素.
- 探索与ISC相关的技术挑战和治疗机会.
主要方法:
- 使用有机体模型和单细胞RNA测序 (scRNA-seq) 来模拟腺体发育和分析细胞异质性.
- 根据标记表达 (例如,LGR5,p27,Mex3a,CLU) 确定了不同的ISC种群.
- 描绘了参与ISC平衡的关键因素,包括与代谢,炎症和Wnt信号相关的途径.
主要成果:
- 确定了新的ISC亚型:LGR5+p27+静止的ISC,LGR5+Mex3a+缓慢增殖的干细胞和CLU+逆干细胞.
- 突出显示ISC平衡的关键调节者:新陈代谢 (LKB1,TGR5,HMGCS2),炎症 (IFN-b,IFN2,TNF) 和Wnt信号传递 (CREPT,Mex3a,MTG16).
- 强调ISCs在肠道瘤发生,化学抵抗和结肠癌复发中的复杂作用.
结论:
- ISC的异质性显著影响肠道疾病和癌症的进展.
- 有机体和scRNA-seq技术的进步使ISC种群和利基互动的详细表征成为可能.
- 对ISC生物学和利基动态的进一步研究有望为开发结肠癌的新型治疗策略提供希望.
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