摘要
背景:多系分化应激耐受(multilineage-differentiating stress-enduring,Muse)细胞是一种具有自我更新和多向分化潜能、可向3个胚层分化的细胞,并且具有非致瘤性和低端粒酶活性,是组织工程、细胞移植及基因治疗领域的理想种子细胞,为临床上多种疾病的治疗提供了广阔的前景。目的:探讨脐带间充质干细胞与脂肪间充质干细胞分选获得的Muse细胞的生物学特性,为临床研究获得足量的Muse细胞提供实验数据。方法:胰酶长时间消化处理脐带间充质干细胞、脂肪间充质干细胞,锥虫蓝染色及流式细胞仪检测比较不同消化时间下两种细胞的存活率与SSEA-3表达阳性率;通过悬浮贴壁法获取Muse细胞,碱性磷酸酯酶染色检测获取Muse细胞的多能干性,Muse细胞在不同诱导分化液作用下进行多系分化,油红O、茜素红、Von Kossa染色检测比较成脂、成骨诱导分化能力,RT-PCR检测多能干细胞标志基因Oct-3/4,Nanog,SSEA-3的表达及Muse细胞诱导分化后双皮质素、神经元特异性烯醇化酶、脂蛋白脂肪酶、骨桥蛋白、甲胎蛋白的表达变化。结果与结论:①随着胰酶消化时间的延长,脐带间充质干细胞、脂肪间充质干细胞存活率下降,SSEA-3阳性率上升;②悬浮贴壁获得的Muse细胞碱性磷酸酯酶染色呈阳性反应,间充质干细胞碱性磷酸酯酶染色阴性;③Muse细胞SSEA-3、Nanog、Oct-3/4基因表达水平明显高于间充质干细胞,与脐带来源Muse细胞相比,脂肪来源Muse细胞Nanog、Oct-3/4基因表达增加;油红O、茜素红、Von Kossa染色结果显示Muse细胞成脂、成骨能力高于间充质干细胞;④间充质干细胞及Muse细胞在成脂、成骨诱导培养液、神经元细胞诱导液、肝细胞诱导液作用下分化效率不一样,但均高表达脂蛋白脂肪酶、骨桥蛋白、神经元特异性烯醇化酶、双皮质素及甲胎蛋白,Muse细胞相关基因表达高于间充质干细胞;⑤实验结果证
BACKGROUND:Multilineage-differentiating stress-enduring(Muse)cells possess self-renewal and multiple differentiation potential.Muse cells are able to differentiate into all three germ layers,and exhibit non-tumorigenicity and low telomerase activity.It is a seed cell in the fields of tissue engineering,cell transplantation and gene therapy,providing a broad prospect for the treatment of various clinical diseases.OBJECTIVE:To study the biological characteristics of Muse cells from umbilical cord derived and adipose derived mesenchymal stem cells in vitro,and provide experimental data for obtaining sufficient Muse cells for clinical research.METHODS:Umbilical cord derived and adipose derived mesenchymal stem cells were incubated with trypsin for different time.The cell survival rates and SSEA-3 expression were detected by Trypan Blue staining and Flow cytomertry.Muse cells were obtained by suspension adherence method.Alkaline phosphatase staining was used to obtain the pluripotency of Muse cells.Muse cells underwent multi-lineage differentiation under different induction conditions.Oil red O staining,Alizarin Red S staining,and Von Kossa staining were used to compare the adipogenic and osteogenic differentiation.RT-PCR was used to detect the changes in pluripotent stem cell marker genes Oct-3/4,Nanog,SSEA-3 and Muse cells induced differentiation related genes doublecortin,neuron-specific enolase,lipoprotein lipase,osteopontin,and alpha-fetoprotein expression.RESULTS AND CONCLUSION:(1)Under trypsin incubation extension,survival rates of umbilical cord derived mesenchymal stem cells and adipose derived mesenchymal stem cells were decreased,accompanied with SSEA-3 expression increased.(2)Alkaline phosphatase staining was positive in Muse cells and negative in mesenchymal stem cells.(3)SSEA-3,Nanog,and Oct-3/4 were highly expressed in Muse cells compared with mesenchymal stem cells.Nanog and Oct-3/4 were highly expressed in adipose-Muse cells compared with umbilical cord-Muse cells.Oil red O,Alizarin Red S,and Von Koss
作者
张坤
李芳
肖东杰
汪运山
黄国宝
刘华
Zhang Kun;Li Fang;Xiao Dongjie;Wang Yunshan;Huang Guobao;Liu hua(Cell Therapy Center,Jinan Central Hospital,Shandong University,Jinan 250013,Shandong Province,China;Shandong Research Center of Transplantation and Tissue,Jinan 250013,Shandong Province,China;Department of Burn and Plastic Surgery,Jinan Central Hospital,Jinan 250013,Shandong Province,China)
出处
《中国组织工程研究》
CAS
北大核心
2022年第24期3802-3807,共6页
Chinese Journal of Tissue Engineering Research
基金
济南市科技发展计划项目(201907053),项目负责人:刘华
山东省医学会脐带血科研专项基金项目(YXH2020ZX013),项目负责人:刘华
山东大学荣祥再生医学基金项目(2019SDRX-08),项目负责人:黄国宝。
关键词
间充质干细胞
脐带
脂肪
多系分化应激耐受细胞
SSEA-3
mesenchymal stem cells
umbilical cord
adipose
multilineage-differentiating stress-enduring cells
SSEA-3
