中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (45): 7294-7298.doi: 10.3969/j.issn.2095-4344.2014.45.015

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

超声微泡增效移植间充质干细胞的归巢机制

钱 健1,陈 飞2,范国峰3,沙杜鹃3,王路娜3,李启明3,马 浩1,陈一冰1,张 均1   

  1. 1南京医科大学鼓楼临床医学院急诊科,江苏省南京市  2100082复旦大学附属第五人民医院心脏科,上海市  2002403南京鼓楼医院急诊中心,江苏省南京市  210008
  • 出版日期:2014-11-05 发布日期:2014-11-05
  • 通讯作者: 张均,教授,主任医师,南京医科大学鼓楼临床医学院急诊科,江苏省南京市 210008
  • 作者简介:钱健,男,1983年生,江苏省南京市人,汉族,南京医科大学在读硕士,医师,主要从事缺血性脑卒中与神经细胞修复研究。
  • 基金资助:

    江苏省卫生厅青年科研课题(Q201306);南京市医学科技发展项目基金(YKK12071);上海市闵行区科技局自然科学研究课题(2014MHZ037)

Mechanism of ultrasound-mediated microbubbles enhancing homing effect of transplanted mesenchymal stem cells

Qian Jian1, Chen Fei2, Fan Guo-feng3, Sha Du-juan3, Wang Lu-na3, Li Qi-ming3, Ma Hao1, Chen Yi-bing1, Zhang Jun1   

  1. 1Department of Emergency, Drum Tower Clinical Medical School of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China; 2Department of Cardiology, the Fifth People’s Hospital Affiliated to Fudan University, Shanghai 200240, China; 3Department of Emergency, Nanjing Drum Tower Hospital, Nanjing 210008, Jiangsu Province, China
  • Online:2014-11-05 Published:2014-11-05
  • Contact: Zhang Jun, Professor, Chief physician, Department of Emergency, Drum Tower Clinical Medical School of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
  • About author:Qian Jian, Studying for master’s degree, Physician, Department of Emergency, Drum Tower Clinical Medical School of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
  • Supported by:

    Youth Scientific Research Project of Jiangsu Provincial Health Department, No. Q201306; Nanjing Medical Technology Development Project Funds, No. YKK12071; Natural Science Research Project of the Science and Technology Bureau of Minhang District in Shanghai, No. 2014MHZ037

摘要:

背景:国内外动物实验已证实超声联合微泡能够显著增强干细胞移植治疗缺血性心血管疾病,但对其作用机制仍不明确

 

目的:通过超声微泡体外作用于细胞,探讨超声联合微泡能够显著增强干细胞移植治疗缺血性心血管疾病的机制。

 

方法:体外分别培养大鼠血管内皮细胞和骨髓间充质干细胞于培养板中,随机各分为对照组、超声组、超声微泡组。对照组不做干预,超声组以频率1 MHz,输出功率1 W/cm2,持续辐照90 s;超声微泡组加入5 μL含氟碳气体脂质体超声微泡(约2×1011 L-1),以同样超声条件作用90 s。

 

结果与结论:超声微泡组血管内皮细胞上清液的血管内皮生长因子和基质细胞衍生因子1表达水平均比对照组显著增高(P < 0.05)。超声组血管内皮生长因子表达水平为与对照组无差异;而基质细胞衍生因子1为较对照组明显降低(P < 0.01)。骨髓间充质干细胞干预后CXCR4基因表达,超声微泡组、超声组较对照组均明显增强(P < 0.01),但超声微泡组和超声组无统计学差异(P > 0.05)。说明超声(1 MHz,1 W/cm2)联合微泡作用90 s能够促进血管内皮细胞分泌细胞因子(血管内皮生长因子和基质细胞衍生因子1),同时促进骨髓间充质干细胞CXCR4基因表达,是其增强移植干细胞归巢效应的机制之一。

 

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


全文链接:

关键词: 干细胞, 移植, 超声, 超声微泡, 血管内皮细胞, 间充质干细胞, 基质细胞衍生因子1, 血管内皮生长因子, 干细胞归巢, 心肌梗死

Abstract:

BACKGROUND: Animal studies have indicated ultrasound-mediated microbubbles can significantly enhance the effect of stem cell transplantation to treat ischemic diseases. But its mechanism is still unknown.

OBJECTIVE: To explore the mechanism of ultrasound-mediated microbubbles to significantly enhance the effect of stem cell transplantation in the treatment of ischemic diseases.
METHODS: Bone marrow mesenchymal stem cells and vascular endothelial cells of rats were cultured in vitro, and then randomized to three groups: control group with no intervention, ultrasound group exposed to ultrasound at 1 MHz, 1 W/cm2 for 90 seconds, and ultrasound-mediated microbubble group treated with 5 μL liposomes ultrasound microbubbles containing fluorocarbon gases (about 2×1011/L) and ultrasound exposure at 1 MHz,
1 W/cm2 for 90 seconds.
RESULTS AND CONCLUSION: Compared to the control group, ultrasound-mediated microbubbles significantly increased expressions of vascular endothelial growth factor and stromal cell-derived factor 1 in the supernatant of vascular endothelial cells (P < 0.05); ultrasound had no effect on the expression of vascular endothelial growth factor, but decreased the level of stromal cell-derived factor 1 (P < 0.01). Ultrasound-mediated microbubbles and the ultrasound alone could significantly enhance the CXCR4 gene expression in bone marrow mesenchymal stem cells as compared with the control group (P < 0.01), but there was no difference between the ultrasound-mediated microbubble group and the ultrasound group (P > 0.05). These findings suggest that 1 W/cm2 ultrasound-mediated microbubbles can promote vascular endothelial growth factor and stromal cell-derived factor 1 secretion by vascular endothelia cells, and meanwhile promote CXCR4 gene expression in bone marrow mesenchymal stem cells. This may be the mechanism of the ultrasound-mediated microbubbles enhancing homing effect of transplanted stem cells.

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


全文链接:

Key words: sonication, endothelial cells, mesenchymal stem cells, liposomes

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