中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (32): 5840-5846.doi: 10.3969/j.issn.2095-4344.2013.32.015

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

骨髓单个核细胞移植后心肌梗死区的血管生成及细胞因子分泌

唐  洁1,2,陈  涛2,米  杰2,徐爱国2,王勇德2,张  健2,齐向前2   

  1. 1武警后勤学院附属医院武警病房,天津市  300162
    2天津医科大学心血管病临床学院泰达国际心血管病医院内二科,天津市  300457
  • 收稿日期:2013-04-08 修回日期:2013-06-05 出版日期:2013-08-06 发布日期:2013-08-06
  • 通讯作者: 齐向前,博士,教授,主任医师,天津医科大学心血管病临床学院泰达国际心血管病医院内二科,天津市 300457 Qixq@tedaich.com
  • 作者简介:唐洁☆,女,1979年生,湖南省永州市人,汉族,2008年天津医科大学毕业,博士,主要从事干细胞移植方面的研究。 amtangtang@163.com
  • 基金资助:

    天津市卫生局课题(04KY63)基金资助。

Effect of bone marrow mononuclear cell transplantation on angiogenesis and expression of cytokines following myocardial infarction

Tang Jie1, 2, Chen Tao2, Mi Jie2, Xu Ai-guo2, Wang Yong-de2, Zhang Jian2, Qi Xiang-qian2   

  1. 1Armed Police Forces Ward, the Affiliated Hospital of Logistics University of Chinese People’s Armed Police Forces, Tianjin  300162, China
    2Second Department of Cardiovascular Diseases, TEDA International Cardiovascular Hospital, Tianjin Medical University, Tianjin  300457, China
  • Received:2013-04-08 Revised:2013-06-05 Online:2013-08-06 Published:2013-08-06
  • Contact: Qi Xiang-qian, M.D., Professor, Chief physician, Second Department of Cardiovascular Diseases, TEDA International Cardiovascular Hospital, Tianjin Medical University, Tianjin 300457, China Qixq@tedaich.com
  • About author:Tang Jie☆, M.D., Armed Police Forces Ward, the Affiliated Hospital of Logistics University of Chinese People’s Armed Police Forces, Tianjin 300162, China; Second Department of Cardiovascular Diseases, TEDA International Cardiovascular Hospital, Tianjin Medical University, Tianjin 300457, China amtangtang@163.com
  • Supported by:

    the Project of Tianjin Health Bureau, No. 04KY63*

摘要:

背景:干细胞移植为治疗心肌梗死带来新的希望,但研究结果不一致,存在争议。细胞移植能否长期持久地改善心脏功能、改善缺血心功能的机制这些问题均不明确。
目的:观察经冠状动脉自体骨髓单个核细胞移植对急性心肌梗死犬心功能、血管生成和细胞因子分泌的影响。
方法:杂种犬分为骨髓单个核细胞组(n=10)和生理盐水组(n=6),前上嵴或髂后上棘穿刺分离得到骨髓单个核细胞,结扎冠状动脉前降支建立急性心肌梗死模型,于心肌梗死后2 h分别经冠状动脉内移植骨髓单个核细胞和生理盐水,心肌梗死后2 h及6周时分别测定超声心动图指标,骨髓单个核细胞移植后6周vWF免疫组化染色检测心肌组织的毛细血管密度,RT-PCR检测血管内皮生长因子(血管内皮生长因子188、血管内皮生长因子164)、碱性成纤维细胞生长因子、基质金属蛋白酶9 mRNA的表达。
结果与结论:经冠状动脉自体骨髓单个核细胞移植后6周,超声心动图显示,骨髓单个核细胞组射血分数和每搏输出量比生理盐水组显著升高;梗死边缘区新生血管数量明显高于生理盐水组。骨髓单个核细胞组梗死区血管内皮生长因子188、血管内皮生长因子164和碱性成纤维细胞生长因子mRNA表达水平显著高于生理盐水组。骨髓单个核细胞组梗死区基质金属蛋白酶9 mRNA 表达水平显著低于生理盐水组。结果说明自体骨髓单个核细胞经冠状动脉内注射移植,改善急性心肌梗死后心功能,促进梗死边缘区血管生成,提高促血管生长因子血管内皮生长因子188、血管内皮生长因子164和碱性成纤维细胞生长因子的mRNA表达水平,减少基质金属蛋白酶9 mRNA表达水平。

关键词: 干细胞, 干细胞移植, 骨髓单个核细胞, 经冠状动脉注射, 心功能, 毛细血管密度, 基质金质层白酶, 细胞因子, 省级基金, 干细胞图片文章

Abstract:

BACKGROUND: Cell transplantation offers a new promise of rebuilding the damaged myocardium. But the results of them are not consistent. It is not clear if the transplanted cells can permanently improve heart function and the mechanism underlying this therapeutic effect.
OBJECTIVE: To study the effect of intracoronary autologous bone marrow mononuclear cell transplantation on cardiac function, and angiogenesis and cytokine production in canines with acute myocardial infarction.
METHODS: Left anterior descending coronary artery ligation was used to produce acute myocardial infarction models in hybrid canines. Bone marrow mononuclear cells were harvested by using puncture of anterior crest and posterior superior iliac spine to prepare cell suspension. Sixteen hybrid canines were randomly divided into transplantation group (n=10) and control group (n=6). Bone marrow mononuclear cells (transplantation group, n=10) or normal saline (control group, n=6) were intracoronarily infused into infarction-related arteries 2 hours after acute myocardial infarction. To evaluate the heart function, we used echocardiography at 2 hours and 6 weeks after acute myocardial infarction. Capillary density was assessed 6 weeks after transplantation by using von Willebrand factor test. The mRNA levels of vascular endothelial growth factor 188, vascular endothelial growth factor 164, basic fibroblast growth factor and matrix metalloproteinase-9 in the infarct area were determined by reverse transcription-PCR at 6 weeks after transplantation.
RESULTS AND CONCLUSION: In contrast to the control group, ejection fraction and stroke volume at 6 weeks after transplantation increased significantly in the transplantation group. The transplantation group had a greater amount of new vessels in the peri-infarct area than the control group. Compared with the control group, the mRNA levels of vascular endothelial growth factor 188, vascular endothelial growth factor 164, and basic fibroblast growth factor significantly increased in the transplantation group, but the mRNA level of matrix metalloproteinase-9 significantly decreased in the transplantation group. These findings suggest that intracoronary transplantation of autologous bone marrow mononuclear cells may improve the cardiac function, and increase capillary density, especially in the border zone of infarcted myocardium. Otherwise, bone marrow mononuclear cell transplantation can increase the mRNA levels of vascular endothelial growth factor 188, vascular endothelial growth factor 164, and basic fibroblast growth factor, but decrease the mRNA level of matrix metalloproteinase-9.

Key words: stem cells, stem cell transplantation, bone marrow mononuclear cell, intracoronary infusion, cardiac function, capillary density, matrix metalloproteinase-9, cytokine, provincial grants-supported paper, stem cell photographs-containing paper

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