摘要
目的建立多能干细胞系,并鉴定其是否具有正常干细胞的特性。方法将原代皮肤标本用胶原酶消化处理,利用成纤维细胞培养基进行培养,然后感染病毒。对挑选的人成体细胞来源的iPS克隆进行扩大培养,并对克隆进行免疫荧光检测和RT-PCR检测,确定表达的分子标志,采用体外三胚层分化来鉴定其生物学特性。结果所获得的iPS细胞经鉴定具有碱性磷酸酶活性,并表达Nanog、SSEA-4、Sox2、TRA-1-60等干细胞特异标记物,可形成拟胚体并在体内外可以分化为三胚层的细胞类型。结论成功建立了iPS细胞系,为今后的研究提供了良好的细胞模型。
Primary skin samples were sheared and digested with collagenase. The cells were then cultured with fibroblast culture medium, and infected with virus. The typical colonies were identified by immunofluorescence and RT PCR was used to determine the gene expression. The colonies were differentiated to three germ layer cells in vitro. Results The established iPS cells were found to express alkaline phosphatase, Nanog,SSEA-4, Sox2,TRA-1-60 and other stem cell specific markers. The cellswere also able to generate differentiated cells and form three germ layers in vitro. Conclusion An iPS cell line was successfully established and it could be used for the future study of pluripotency stem cells.
出处
《热带医学杂志》
CAS
2013年第12期1445-1447,F0004,共4页
Journal of Tropical Medicine
基金
广州市卫生局西医类一般引导项目(201102A213241)
关键词
多能干细胞
诱导性
细胞模型
建系
pluripotent stem cells
induced
cell model
establish cell lines