Kamiya 干细胞因子，大鼠重组 Stem Cell Fa

趁年轻，动起来：Nature 报道运动促进骨髓产生免疫细胞，但这种能力随年龄增长而消失

niche）。而 HSPCs 又负责生产血细胞系，包括免疫细胞 [3]。 在小鼠中，一些间质祖细胞产生一种被称为干细胞因子（stem cell factor，SCF）的信号分子，对 HSPCs 维持起到关键作用 [4]。这些细胞同时表达一种细胞表面蛋白，瘦素受体蛋白（Leptin Receptor，LepR）。这群 LepR+ 细胞在包括两种类型的血管、小动脉和血窦等完全不同的位置都有存留。然而，LepR+ 细胞群是由多种基质祖细胞组成的混合细胞群，哪些细胞是真正在维持 HSPC 微环境中起作用

Single and Dual Birthdating Procedures for Assessing the Response of Adult Neural Stem Cells to the Infusion of a Soluble Factor Using Halogenated Thy

that regulate the switch from adult neural stem cell (aNSC) quiescence to active proliferation are poorly understood. Here we describe a method to study the in vivo effect of a soluble factor on cell cycle entry and proliferation of aNSCs located in the brain

Transplantation Models to Characterize the Mechanisms of Stem Cell–Induced Islet Regeneration

) activity, a conserved function in multiple stem cell lineages, a mixed population of hematopoietic, endothelial, and mesenchymal progenitor cells can be efficiently purified using flow cytometry. We describe in vitro approaches to characterize and expand