中国组织工程研究

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

多发性骨髓瘤患者骨髓间充质干细胞冻存前后的生物学特性

王振玲,王金焕,郭  青,赵智刚   

  1. 天津医科大学肿瘤医院血液肿瘤科,国家肿瘤临床医学研究中心,天津市“肿瘤防治”重点实验室,天津市  300060
  • 修回日期:2013-08-12 出版日期:2013-11-05 发布日期:2013-11-05
  • 通讯作者: 赵智刚,博士,副主任医师,天津医科大学肿瘤医院血液肿瘤科,国家肿瘤临床医学研究中心,天津市“肿瘤防治”重点实验室,天津市 300060 zhao58@jupui.edu
  • 作者简介:王振玲★,女,1988年生,山东省临沂市人,汉族,天津医科大学在读硕士,主要从事干细胞生物学研究。 wzl0539tc@163.com
  • 基金资助:

    国家自然科学基金项目(30801051,81172833)**

Biological characteristics of bone marrow mesenchymal stem cells from multiple myeloma patients before and after cryopreservation

Wang Zhen-ling, Wang Jin-huan, Guo Qing, Zhao Zhi-gang   

  1. Department of Hematology and Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin  300060, China
  • Revised:2013-08-12 Online:2013-11-05 Published:2013-11-05
  • Contact: Zhao Zhi-gang, M.D., Associate chief physician, Department of Hematology and Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China zhao58@jupui.edu
  • About author:Wang Zhen-ling★, Studying for master’s degree, Department of Hematology and Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China wzl0539tc@163.com
  • Supported by:

    the National Natural Science Foundation of China, No. 30801051*, 81172833*

摘要:

背景:多发性骨髓瘤患者的骨髓间充质干细胞具有多向分化、免疫调节和支持造血作用,但是这些功能是否受冻存的影响目前尚不清楚。
目的:探讨冻存对多发性骨髓瘤患者骨髓间充质干细胞生物学特性的影响。
方法:采用细胞贴壁法获取多发性骨髓瘤患者骨髓间充质干细胞,将传代后的细胞用IMDM细胞冻存液(含10%的二甲基亚砜和体积分数40%的胎牛血清)保存在-196 ℃液氮中。检测短期(1个月)和长期(12个月)冻存复苏后间充质干细胞的活性和增殖能力;将冻存后多发性骨髓瘤患者骨髓间充质干细胞作为滋养层,应用甲基纤维素半固体培养,检测其支持造血的能力;混合淋巴细胞反应检测冻存后多发性骨髓瘤患者骨髓间充质干细胞调控免疫能力。
结果与结论:经过短、长期冻存后多发性骨髓瘤患者骨髓间充质干细胞的细胞活性分别为(92.9±7.5)%和(86.7±9.2)%;短、长期冻存后细胞的增殖能力与冻存前间充质干细胞相似;冻存后多发性骨髓瘤患者骨髓间充质干细胞仍具有支持造血祖细胞生长的作用和抑制T淋巴细胞增殖的能力,与冻存前相比,没有明显差别。说明冻存可以降低多发性骨髓瘤患者骨髓间充质干细胞的细胞活性,但是并不影响间充质干细胞的增殖、支持造血和免疫调节的能力。

关键词: 干细胞, 骨髓干细胞, 多发性骨髓瘤, 间充质干细胞, 冻存, 生物学特性, 支持造血, 粒细胞-巨噬细胞集落形成单位, 红系集落形成单位, 混合集落形成单位, 国家自然科学基金

Abstract:

BACKGROUND: Bone marrow mesenchymal stem cells derived from multiple myeloma patients are characterized by pluripotential differentiation, immunoregulation and supporting hematopoiesis, but whether these features are affected after cryopreservation is unclear.
OBJECTIVE: To study the biological characteristics of cryopreserved bone marrow mesenthymal stem cell derived from multiple myeloma patients.
METHODS: Bone marrow mesenchymal stem cells derived from multiple myeloma patients were cryopreserved in -196 ℃ liquid nitrogen for 1 month (short term) and 12 months (long term) with Iscove’s modified Dulbecco’s medium containing 10% dimethyl sulfoxide and 40% fetal bovine serum as cryoprotectant. The viability and proliferation ability of thawed bone marrow mesenchymal stem cells were investigated. Hematopoiesis support of thawed bone marrow mesenchymal stem cells in vitro was detected by long-term bone marrow culture and the methylcellulose progenitor assay. The immunoregulatory ability of thawed mesenchymal stem cells was detected by mixed lymphocyte culture assay.
RESULTS AND CONCLUSION: The cell viability was (92.9±7.5)% and (86.7±9.2)% for mesenchymal stem cells cryopreserved as long as 1 month or 12 months, respectively. Furthermore, thawed bone marrow mesenchymal stem cells possessed the ability of supporting colony forming and could significantly suppress proliferation of T lymphocytes. At last, there were no changes detected as compared with pre-cryopreserved mesenchymal stem cells in the abilities of proliferation, hematopoiesis support and immunoregulation. Cryopreservation can decrease the cell viability of bone marrow mesenchymal stem cells derived from the patients with multiple myeloma, but cannot affect the abilities of proliferation, hematopoiesis support and immunoregulation.

Key words: stem cells, multiple myeloma, mesenchymal stem cells, cryopreservation, freezing

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