中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (32): 5765-5771.doi: 10.3969/j.issn.2095-4344.2013.32.004

• 脐带脐血干细胞 umbilical cord blood stem cells • 上一篇    下一篇

冷冻前后脐带间充质干细胞造血支持能力的比较

常相萍1,马  艳2,毕晓娟2,宋丽娟1,段显琳1,江  明1,2   

  1. 1新疆医科大学第一附属医院血液二科、新疆血液病研究所,新疆维吾尔自治区乌鲁木齐市  830011
    2新疆医科大学临床医学研究院干细胞研究中心,新疆维吾尔自治区乌鲁木齐市  830054
  • 收稿日期:2013-04-05 修回日期:2013-06-01 出版日期:2013-08-06 发布日期:2013-08-06
  • 通讯作者: 江明,硕士,主任医师,教授,博士生导师,新疆医科大学第一附属医院血液二科、新疆血液病研究所,新疆维吾尔自治区乌鲁木齐市 830011;新疆医科大学临床医学研究院干细胞研究中心,新疆维吾尔自治区乌鲁木齐市 830054 jiangmingyy@126.com
  • 作者简介:常相萍★,女,1982年生,山东省菏泽市人,汉族,2008年安徽理工大学医学院毕业,在读硕士,主要从事造血干细胞移植、血液病的研究。
  • 基金资助:

    新疆医科大学第一附属医院干细胞专项基金(2009-GXB-07)。

Human umbilical cord mesenchymal stem cells: Comparison of hematopoiesis supporting capacity before and after cryopreservation

Chang Xiang-ping1, Ma Yan2, Bi Xiao-juan2, Song Li-juan1, Duan Xian-lin1, Jiang Ming1, 2   

  1. 1Second Department of Hematology, the First Affiliated Hospital of Xinjiang Medical University, Institute of Hematology of Xinjiang Uygur Autonomous Region, Urumqi  830054, Xinjiang Uygur Autonomous Region, China
    2Stem Cell Laboratory, Clinical Medicine Research Institute of Xinjiang Medical University, Urumqi  830054, Xinjiang Uygur Autonomous Region, China
  • Received:2013-04-05 Revised:2013-06-01 Online:2013-08-06 Published:2013-08-06
  • Contact: Jiang Ming, Master, Chief physician, Professor, Doctoral supervisor, Second Department of Hematology, the First Affiliated Hospital of Xinjiang Medical University, Institute of Hematology of Xinjiang Uygur Autonomous Region, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; Stem Cell Laboratory, Clinical Medicine Research Institute of the Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China jiangmingyy@126.com
  • About author:Chang Xiang-ping★, Studying for master’s degree, Second Department of Hematology, the First Affiliated Hospital of Xinjiang Medical University, Institute of Hematology of Xinjiang Uygur Autonomous Region, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Supported by:

    Special Fund for Stem Cells in the First Affiliated Hospital of Xinjiang Medical University, No. 2009-GXB-07*

摘要:

背景:低温冻存脐带间充质干细胞已成为研究热点,但关于冻存后其造血支持能力变化的报道甚少。
目的:比较冷冻前后脐带间充质干细胞体外支持成人骨髓单个核细胞造血集落生成的能力。
方法:分别将冷冻前后的人脐带间充质干细胞和人骨髓来源的间充质干细胞培养至第3代,经2.5 g/L丝裂霉素C处理制备为细胞滋养层,与成人异体骨髓单个核细胞共培养。体外培养至35 d 应用甲基纤维素法检测造血干/祖细胞集落的增殖状态。
结果与结论:冷冻人脐带间充质干细胞组集落形态、大小上与骨髓间充质干细胞组和未冷冻人脐带间充质干细胞组相似,3者均比空白组集落数量多,差异有显著性意义(P < 0.05)。与未冷冻人脐带间充质干细胞组相比,冷冻人脐带间充质干细胞组集落数更少,差异有显著性意义(P < 0.05)。实验结果说明冷冻前后人脐带间充质干细胞与骨髓间充质干细胞对骨髓单个核细胞均有造血刺激作用,但人脐带间充质干细胞冷冻后的造血支持作用有所减弱。

关键词: 干细胞, 脐带脐血干细胞, 脐带间充质干细胞, 冷冻, 共培养, 造血, 长期培养起始细胞, 造血干/祖细胞, 造血集落, 扩增, 其他基金, 干细胞图片文章

Abstract:

BACKGROUND: Cryopreservation of human umbilical cord mesenchymal stem cells has been a hot research issue currently, but the studies concerning their effects on expansion of hematopoietic stem/progenitor cells after cryopreservation are seldom.
OBJECTIVE: To investigate the effects of human umbilical cord mesenchymal stem cells before and after cryopreservation as feeder layer on expansion of human bone marrow mononuclear cells in vitro.
METHODS: 2.5g/L mitomycin C processed human umbilical cord mesenchymal stem cells and bone marrow mesenchymal stem cells at passage 3 were used as the feeder layer to expand adult allogeneic bone marrow mononuclear cells in culture. Up to day 35, methylcellulose assay was used to detect hematopoietic stem/progenitor cell colony proliferation.
RESULTS AND CONCLUSION: There were no differences in the morphology and size of colonies in the cryopreserved human umbilical cord mesenchymal stem cell group, bone marrow mesenchymal stem cell group and non-cryopreserved human umbilical cord mesenchymal stem cell group. However, these parameter described above were significantly higher in these three groups than the blank control group (P < 0.05). There were fewer colonies in the cryopreserved human umbilical cord mesenchymal stem cell group than the non-cryopreserved human umbilical cord mesenchymal stem cell group (P < 0.05). These findings indicate that human umbilical cord mesenchymal stem cells before and after cryopreservation have the ability as feeder layer on expansion of bone marrow mononuclear cells in vitro similar to bone marrow mesenchymal stem cells. But this ability of human umbilical cord mesenchymal stem cells may decrease after cryopreservation.

Key words: stem cells, umbilical cord/umbilical blood stem cells, human umbilical cord mesenchymal stem cells, cryopreservation, co-culture, hematopoiesis, long-term culture of initiating cells, hematopoietic stem/progenitor cells, hematopoietic colony, amplification, other grants-supported paper, stem cell photographs-containing paper

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