中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (10): 1591-1596.doi: 10.3969/j.issn.2095-4344.2014.10.018

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

胎盘间充质干细胞传代后的增殖能力

白金萍1,李秀英2,李  雪3,杨麒巍2,刘颖男2,王轶敏2,4   

  1. 1吉林大学基础医学院病理学教研室,吉林省长春市  130021;2吉林大学中日联谊医院中心实验室,吉林省长春市  130033;3延边大学药理教研室,吉林省延边市  133002;4吉林省中科生物工程有限公司,吉林省长春市  130012
  • 出版日期:2014-03-05 发布日期:2014-03-05
  • 通讯作者: 王轶敏,博士,唐敖庆特聘教授,博士生导师,吉林大学中日联谊医院中心实验室,吉林省长春市 130033;吉林省中科生物工程有限公司,吉林省长春市 130012
  • 作者简介:白金萍,女,1984年生,吉林省长春市人,汉族,吉林大学在读硕士,主要从事干细胞研究。

Proliferative abilities of placenta-derived mesenchymal stem cells at different passages

Bai Jin-ping1, Li Xiu-ying2, Li Xue3, Yang Qi-wei2, Liu Ying-nan2, Wang Yi-min 2, 4   

  1. 1 Department of Pathology, School of Basic Medical Sciences, Jilin University, Changchun 130021, Jilin Province, China; 2 Central Laboratory, China-Japan Union Hospital, Jilin University, Changchun 130033, Jilin Province, China; 3 Department of Pharmacology, Yanbian University, Yanbian 133002, Jilin Province, China; 4 Jilin Zhongke Bio-engineering Co., Ltd., Changchun 130012, Jilin Province, China
  • Online:2014-03-05 Published:2014-03-05
  • Contact: Wang Yi-min, M.D., Doctoral supervisor, Central Laboratory, China-Japan Union Hospital, Jilin University, Changchun 130033, Jilin Province, China; Jilin Zhongke Bio-engineering Co., Ltd., Changchun 130012, Jilin Province, China
  • About author:Bai Jin-ping, Studying for master’s degree, Department of Pathology, School of Basic Medical Sciences, Jilin University, Changchun 130021, Jilin Province, China

摘要:

背景:胎盘间充质干细胞的增殖能力比骨髓间充质干细胞增殖能力强,但是否每个代次胎盘间充质干细胞的增殖能力都相同尚无定论。
目的:分析不同代次胎盘间充质干细胞的增殖能力。
方法:采用酶消化法分离人胎盘间充质干细胞,并利用流式细胞仪检测干细胞表面标志物,并进行成脂成骨诱导分化。采用细胞计数和BrdU方法检测细胞的增殖能力,根据倍增时间公式计算倍增时间,并进行长期传代。
结果与结论:胎盘间充质干细胞阳性表达CD44、CD90和CD105,阴性表达CD14、CD34和CD45;成脂诱导21 d后油红O染色镜下可见红色脂肪滴,成骨诱导35 d茜素红染色镜下可见钙盐结节。细胞从第1代开始计数,直到第15代共获得3.5×1011个细胞。P5代比P10和P15代胎盘间充质干细胞的增殖能力强,倍增时间短。长期传代,胎盘间充质干细胞传代到第25代时,其中3例标本细胞形态完全发生改变,呈铺路石样;另外2例标本几乎无贴壁细胞。提示胎盘间充质干细胞可以长期传代到第25代,不同代次的胎盘间充质干细胞增殖能力不同,P5代增殖能力明显高于P10和P15代,临床应用应以P5代之前为宜。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

关键词: 干细胞, 间充质干细胞, 胎盘间充质干细胞, 胎盘, 增殖能力

Abstract:

BACKGROUND: The mesenchymal stem cells which are from the placenta have better proliferative potential than the bone marrow mesenchymal stem cells. It is inconclusive, however, whether placenta-derived mesenchymal stem cells at different passages have the same proliferative ability.
OBJECTIVE: To analyze the proliferative ability of placenta-derived mesenchymal stem cells.
METHODS: Placenta-derived human mesenchymal stem cells were isolated with enzyme digestion, and flow cytometry was used to detect the cell surface markers. After osteogenic and adipogenic induction, cell proliferation detection was carried out using cell counting and BrdU analysis. Cell doubling time was calculated based on formula. The maximum cell passage was determined by long term cell culture until the cell died or differentiated.
RESULTS AND CONCLUSION: CD44, CD90 and CD105 were highly expressed in placenta-derived mesenchymal stem cells, while CD14, CD34 and CD45 were negatively expressed. After 21 days of adipogenic induction, oil red O staining showed red fat droplets; after 35 days of osteogenic induction, alizarin red staining showed calcium nodules. Cell counting started from passage 1 to 25, and cell number reached to 3.5×1011 at passage 15. Cell proliferation at passage 5 was stronger with shorter doubling time than that at passages 10 and 15. When cells reached to passage 25, three specimens completely altered their cell morphology with cobblestone structure, and another two specimens lost adherent features. These findings indicate that 
placenta-derived mesenchymal stem cells can be long-term subcultured upon to passage 25. Different proliferation capacities are found in different passages of placenta-derived mesenchymal stem cells. The proliferation ability of passage 5 placenta-derived mesenchymal stem cells is stronger than that of passage 10 and 15 cells. Placenta-derived mesenchymal stem cells at passages 0-5 are the important source for stem cell therapy and tissue engineering.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

Key words: stem cells, mesenchymal stem cells, placenta, cell proliferation

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