中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (29): 4617-4622.doi: 10.3969/j.issn.2095-4344.2017.29.005

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

人血红素加氧酶1过表达大鼠骨髓间充质干细胞对缺血缺氧环境损伤的耐受能力

邓宁波1,韩腾龙2,曾元清3,蒋知新2   

  1. 1广东省中医院珠海医院,广东省珠海市 519015;2解放军第305医院,北京市 100017;3郴州市第一人民医院,湖南省郴州市 423000
  • 修回日期:2017-06-06 出版日期:2017-10-18 发布日期:2017-11-08
  • 通讯作者: 蒋知新,硕士,主任技师,解放军第305医院,北京市 100017
  • 作者简介:邓宁波,1990年生,湖南省郴州市人,汉族,2017年南方医科大学毕业,硕士,主要从事冠心病及急性心肌梗死方面的研究。
  • 基金资助:

    国家自然科学基金(30971235);军队“十二五”医学科研基金(2013XL010)

Tolerance of rat bone marrow mesenchymal stem cells overexpressing human heme oxygenase 1 to ischemia/hypoxia injury

Deng Ning-bo1, Han Teng-long2, Zeng Yuan-qing3, Jiang Zhi-xin2   

  1. 1Zhuhai Hospital of Guangdong Provincial TCM Hospital, Zhuhai 519015, Guangdong Province, China; 2the 305 Hospital of PLA, Beijing 100017, China; 3the First People’s Hospital of Chenzhou, Chenzhou 423000, Hunan Province, China
  • Revised:2017-06-06 Online:2017-10-18 Published:2017-11-08
  • Contact: Jiang Zhi-xin, Master, Chief technician, the 305 Hospital of PLA, Beijing 100017, China
  • About author:Deng Ning-bo, Master, Zhuhai Hospital of Guangdong Provincial TCM Hospital, Zhuhai 519015, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 30971235; the Medical Research Fund of PLA during the Twelfth Five-Year Plan Period, No. 2013XL010

摘要:

文章快速阅读:

文题释义:
人血红素加氧酶1:
是一类内源性细胞保护因子,是血红素分解代谢中的限速酶,可借助多种保护性信号通路的激活、旁分泌细胞保护因子及调节线粒体功能,减轻由炎症因子、内毒素等介导的氧化应激损伤,具有良好的抗氧化、抗凋亡作用。
人血红素加氧酶1酶促反应及产物的功能意义:可催化对细胞有毒性的氧自由基、导致DNA损伤及脂质过氧化的蛋白质发生变性,可催化血红素代谢生成胆绿素、一氧化碳和游离铁。胆绿素和胆红素在体内具有良好的抗氧化剂作用,内源一氧化碳具有抑制炎性细胞因子表达,扩张血管和减少血小板聚集等作用,保持微循环的稳定性。

 

摘要
背景:
骨髓间充质干细胞移植后在宿主恶劣的缺血缺氧微环境中生存率过低,限制了其治疗急性心肌梗死的疗效。
目的:探讨人血红素加氧酶1基因修饰的大鼠骨髓间充质干细胞对缺血缺氧环境损伤的耐受能力。
方法:人血红素加氧酶1重组腺病毒转染大鼠骨髓间充质干细胞,Western blot法确定人血红素加氧酶1蛋白表达的最佳时间;以缺氧无血清条件模拟体内缺血缺氧微环境培养人血红素加氧酶1基因修饰的大鼠骨髓间充质干细胞,采用CCK-8试剂盒和锥虫蓝染色法检测缺血缺氧培养12,24,48,72 h的细胞存活率,流式细胞术检测缺血缺氧培养24 h的细胞凋亡情况。
结果与结论:①在转染后第4天人血红素加氧酶1蛋白表达量最多;②锥虫蓝染色法和CCK-8法检测人血红素加氧酶1组缺血缺氧培养12,24,48,72 h的细胞生存率均高于对照组(P < 0.05);③流式细胞术检测人血红素加氧酶1组缺血缺氧培养24 h的生存率高于对照组(P < 0.05);④结果表明,人血红素加氧酶1修饰的大鼠骨髓间充质干细胞对缺血缺氧环境损伤的耐受能力明显增强。

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
ORCID:
0000-0002-1164-7403(邓宁波)

关键词: 干细胞, 骨髓干细胞, 血红素加氧酶1, 骨髓间充质干细胞, 腺病毒, CCK-8, 锥虫蓝, ;流式细胞术, 缺血缺氧, 凋亡, 国家自然科学基金

Abstract:

BACKGROUND: Under ischemia/hypoxia microenvironment, very low survival rate of transplanted bone marrow mesenchymal stem cells (BMSCs) in the host limits its efficacy in the treatment of acute myocardial infarction.
OBJECTIVE: To explore the tolerance of human heme oxygenase 1 (hHO-1) gene modified rat BMSCs to ischemia/hypoxia injury.  
METHODS: The rat BMSCs were transfected with hHO-1 recombinant adenovirus. Western blot assay was used to determinate the optimal time of hHO-1 protein expression. hHO-1 modified rat BMSCs were cultured in hypoxia and serum-free conditions that simulated ischemia/hypoxia microenvironment in vivo. Cell counting kit-8 and trypan blue staining were performed to detect the survival rate of BMSCs at 12, 24, 48, 72 hours after culture under the ischemia/hypoxia microenvironment. Flow cytometry was used to detect apoptosis in BMSCs at 24 hours after culture under the ischemia/hypoxia microenvironment. 
RESULTS AND CONCLUSION: The expression of hHO-1 protein was highest at 4 days after transfection. Under the ischemia/hypoxia microenvironment for 12, 24, 48, 72 hours, the survival rates of transfected BMSCs were significantly higher as compared with the untransfected cells (P < 0.05), shown by the cell counting kit-8 and trypan blue staining. In addition, the results from flow cytometry showed that there was a higher survival rate of transfected BMSCs than untransfected cells at 24 hours of culture under the ischemia/hypoxia microenvironment (P < 0.05). To conclude, hHO-1 modified rat BMSCs have stronger tolerance to the ischemia/hypoxia microenvironment.

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: Bone Marrow, Mesenchymal Stem Cells, Heme Oxygenase-1, Adenoviridae Infections, Tissue Engineering

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