目的 在体外诱导胚胎干细胞(ESCs)向肾脏细胞分化,并自发形成包含肾小球、近端小管、远端小管以及血管网络的肾脏样结构.方法 在体外将 ESCs 培养至40%~50%汇合度.然后在成纤维细胞生长因子9 (FGF9)与肝糖原合成激酶3β受体的选择性抑制剂CHIR99021的作用下,诱导ESCs分化形成肾脏样结构,对该肾脏样结构分别进行免疫荧光染色检查与电镜检查,以观察其内部结构并且成像记录.结果 通过细胞因子FGF9与CHIR99021的作用,成功诱导ESCs分化形成了肾脏样结构,结构鉴定证实其中有肾小球、近端小管、远端小管以及血管网络的存在.结论 利用ESCs分化可以形成包含完整肾单位及血管网络的肾脏样结构,其结构类似于正常肾脏.%Objective To induce embryonic stem cells (ESCs) to differentiate into the renal cells in vitro and to spontaneously form the kidney-like structures including glomerular, proximal tubules, distal tubules and vascular network. Methods ESCs were cultured to 40%-50% of confluence. Under the action of cytokine FGF9 and CHIR99021,the differentiation of ESCs was induced to form a kidney-like structure, which was examined by im-munofluorescence staining and electron microscopy to observe its internal structures and take photo-images. Results Through the action of cytokine FGF9 and CHIR99021, ESCs can be induced to differentiate into renal like struc-tures containing glomerular, proximal tubules, distal tubules and vascular network, which were confirmed by the structural identification. Conclusions The kidney-like structure generated by the differentiation of ESCs contains complete renal units and vascular network,which is similar to the normal kidney.
展开▼
