The rapidly self-renewing epithelium in the mammalian intestine is maintained by multipotent intestinal stem cells(ISCs) located at the bottom of the intestinal crypt that are interspersed with Paneth cells in the sma...The rapidly self-renewing epithelium in the mammalian intestine is maintained by multipotent intestinal stem cells(ISCs) located at the bottom of the intestinal crypt that are interspersed with Paneth cells in the small intestine andPaneth-like cells in the colon. The ISC compartment is also closely associated with a sub-epithelial compartmentthat contains multiple types of mesenchymal stromal cells. With the advances in single cell and gene editingtechnologies, rapid progress has been made for the identification and characterization of the cellular componentsof the niche microenvironment that is essential for self-renewal and differentiation of ISCs. It has becomeincreasingly clear that a heterogeneous population of mesenchymal cells as well as the Paneth cells collectivelyprovide multiple secreted niche signals to promote ISC self-renewal. Here we review and summarize recentadvances in the regulation of ISCs with a main focus on the definition of niche cells that sustain ISCs.展开更多
基金The research in the Xi’s lab is in part supported by the National Key Research and Development Program of China(2017YFA0103602)GZ is supported by grants from National Natural Science Foundation for Young Scientists of China(31801229)+1 种基金China Postdoctoral Science Foundation(2017 M610779)Beijing Postdoctoral Research Foundation(2016-ZZ-110).
文摘The rapidly self-renewing epithelium in the mammalian intestine is maintained by multipotent intestinal stem cells(ISCs) located at the bottom of the intestinal crypt that are interspersed with Paneth cells in the small intestine andPaneth-like cells in the colon. The ISC compartment is also closely associated with a sub-epithelial compartmentthat contains multiple types of mesenchymal stromal cells. With the advances in single cell and gene editingtechnologies, rapid progress has been made for the identification and characterization of the cellular componentsof the niche microenvironment that is essential for self-renewal and differentiation of ISCs. It has becomeincreasingly clear that a heterogeneous population of mesenchymal cells as well as the Paneth cells collectivelyprovide multiple secreted niche signals to promote ISC self-renewal. Here we review and summarize recentadvances in the regulation of ISCs with a main focus on the definition of niche cells that sustain ISCs.
