中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (45): 7230-7236.doi: 10.3969/j.issn.2095-4344.2015.45.003

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

缺氧诱导骨髓间充质干细胞条件培养基体外修复辐射损伤小肠上皮细胞变化

郑 跃,陈 浩,沙卫红,王启仪,刘婉薇   

  1. 广东省人民医院消化内科,广东省医学科学院,广东省广州市 510080
  • 收稿日期:2015-09-23 出版日期:2015-11-05 发布日期:2015-11-05
  • 通讯作者: 刘婉薇,副主任医师,广东省人民医院消化内科,广东省医学科学院,广东省广州市 510080
  • 作者简介:郑跃,男,1981年生,汉族,广东省潮州市人,2009年南方医科大学毕业,主治医师,主要从事胃肠病的诊治及干细胞的基础及临床研究。 并列第一作者:陈浩,博士,广东省人民医院消化内科,广东省医学科学院,广东省广州市 510080
  • 基金资助:

    国家自然科学基金项目(81300279);中国博士后科学基金项目(2012M521579);广东省自然科学基金项目(S2013040013549);广东省医学科研基金项目(A2014020);广东省科技计划项目(2015A020212029)

Bone marrow mesenchymal stem cell conditioned medium with hypoxic activation enhances its effects on radiation-induced intestinal epithelial cell injury in vitro

Zheng Yuei, Chen Hao, Sha Wei-hong, Wang Qi-yi, Liu Wan-wei   

  1. Department of Gastroenterology, Guangdong General Hospital and Guangdong Academy of Medical Science, Guangzhou 510080, Guangdong Province, China
  • Received:2015-09-23 Online:2015-11-05 Published:2015-11-05
  • Contact: Liu Wan-wei, Associate chief physician, Department of Gastroenterology, Guangdong General Hospital and Guangdong Academy of Medical Science, Guangzhou 510080, Guangdong Province, China
  • About author:Zheng Yue, Attending physician, Department of Gastroenterology, Guangdong General Hospital and Guangdong Academy of Medical Science, Guangzhou 510080, Guangdong Province, China Chen Hao, M.D., Department of Gastroenterology, Guangdong General Hospital and Guangdong Academy of Medical Science, Guangzhou 510080, Guangdong Province, China Zheng Yue and Chen Hao contributed equally to this work.
  • Supported by:

    the National Natural Science Foundation of China, No. 81300279; China Postdoctoral Science Foundation, No. 2012M521579; the Natural Science Foundation of Guangdong Province, No. S2013040013549; the Medical Science Research Foundation of Guangdong Province, No. A2014020; the Scientific Plan Project of Guangdong Province, No. 2015A020212029

摘要:

背景:间充质干细胞条件培养基含有丰富的间充质干细胞旁分泌物质,被认为是干细胞移植理想的替代方案。然而,正常状态的间充质干细胞条件培养基可能由于旁分泌活性不足,常无法有效修复损伤组织。
目的:观察缺氧诱导的骨髓间充质干细胞条件培养基(MSC-CMHyp)对大鼠小肠隐窝上皮IEC-6细胞辐射损伤后增殖和凋亡的影响,并进一步探讨其修复小肠上皮细胞的旁分泌机制。
方法:IEC-6细胞接受10 Gy X射线照射后分别加入MSC-CMHyp、正常培养的骨髓间充质干细胞条件培养基(MSC-CMNor组)及DMEM-F12培养基(DMEM-F12组)培养。
结果与结论:锥虫蓝染色、流式细胞仪、Western blot检测结果显示,与DMEM-F12组相比,MSC-CMHyp组IEC-6细胞存活数和增殖率明显增加(P < 0.05),凋亡率和凋亡相关因子Caspases-3/8表达明显下降(P < 0.05),而MSC-CMNor组的各项指标与DMEM-F12组比较差异无显著性意义(P > 0.05)。EILSA检测结果显示,与MSC-CMNor相比,MSC-CMHyp中血管内皮生长因子、碱性成纤维细胞生长因子、胰岛素样生长因子1、和白细胞介素10的含量明显升高(P < 0.05)。结果表明,缺氧诱导的骨髓间充质干细胞条件培养基中细胞因子含量明显升高,显著促进辐射损伤IEC-6细胞的增殖,同时下调细胞凋亡信号,从而进一步促进损伤细胞的修复。
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

关键词: 干细胞, 骨髓干细胞, 条件培养基, 骨髓间充质干细胞, 旁分泌, 小肠损伤, 细胞治疗, 干细胞, 移植, 缺氧诱导, 小肠上皮细胞, 细胞因子, 国家自然科学基金

Abstract:

BACKGROUND: Conditioned medium from mesenchymal stem cells (MSC-CM) that contains abundant MSCs paracrine substances may represent a promising alternative to MSCs transplantation. However, normal MSC-CM with insufficient paracrine ability is not effective for tissue damage repair.
OBJECTIVE: To investigate the effects of MSC-CM with (MSC-CMHyp) and without hypoxic activation (MSC-CMNor) on the proliferation and apoptosis of radiation-induced injured intestinal epithelial cells (IEC-6) and to further discuss the paracrine mechanisms.
METHODS: IEC-6 cells were exposed to 10 Gy irradiation and cultured in MSC-CMHyp, MSC-CMNor, and DMEM-F12 medium, respectively.
RESULTS AND CONCLUSION: Findings from trypan blue staining, flow cytometry and western blot assay showed that, compared with the DMEM-F12 medium group, treatment with MSC-CMHyp significantly enhanced IEC-6 viability proliferation after radiation-induced injury, as well as significantly decreased cell apoptosis and expression of Caspases-3/8 (P < 0.05). However, there was no significant difference between the MSC-CMNor group and DMEM-F12 medium group (P > 0.05). On the other hand, the increased levels of vascular endothelial growth factor, basic fibroblast growth factor, insulin-like growth factor-1, and interleukin-10 were detected in the MSC-CMHyp group compared to the MSC-CMNor group (P < 0.05). These results suggest that the MSC-CMHyp improves the viability and proliferative capacity of IEC-6 cells after radiation-induced injury via up-regulating secretion of cytokines and down-regulating apoptotic signaling.
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

Key words: Mesenchymal Stem Cells, Culture Media, Conditioned, Intestine, Small, Tissue Engineering