中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (25): 4007-4012.doi: 10.3969/j.issn.2095-4344.2017.25.012

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

超声联合微泡增效骨髓间充质干细胞归巢治疗缺血性脑卒中

钱 健,范国峰,徐 鹏,李启明,沙杜鹃,王 军,张 均   

  1. 南京大学医学院附属鼓楼医院急诊科,江苏省南京市 210008
  • 修回日期:2017-03-10 出版日期:2017-09-08 发布日期:2017-10-09
  • 通讯作者: 范国峰,硕士,主治医师,南京大学医学院附属鼓楼医院急诊科,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,2015年南京医科大学毕业,主治医师,主要从事缺血性脑卒中与神经细胞修复研究。
  • 基金资助:

    南京市医学科技发展项目基金(YKK16100);江苏省卫生厅青年科研课题(Q201306)

Ultrasound-mediated microbubble promotes bone marrow mesenchymal stem cell homing in the treatment of ischemic stroke

Qian Jian, Fan Guo-feng, Xu Peng, Li Qi-ming, Sha Du-juan, Wang Jun, Zhang Jun   

  1. Department of Emergency, Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
  • Revised:2017-03-10 Online:2017-09-08 Published:2017-10-09
  • Contact: Fan Guo-feng, Master, Attending physician, Department of Emergency, Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
  • About author:Qian Jian, Attending physician, Department of Emergency, Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
  • Supported by:

    the Medical Development Foundation of Nanjing City, No. YKK16100; the Youth Scientific Research Project of Jiangsu Provincial Health Department, No. Q201306

摘要:

文章快速阅读:

文题释义:
超声微泡:
是一种超声对比剂,结构包括核心及外壳2个部分,核心由二氧化碳、氧气、空气或大分子惰性气体等构成,外壳可由磷脂类化合物、白蛋白、糖类、非离子表面活性剂或可生物降解的高分子多聚物等不同材料组成。在疾病诊断上,它用于提高超声图像质量;在治疗上,它作为一种载体,与超声波相互作用产生生物学效应,实现所携带药物及基因等向靶向组织的传递释放,或利用声学空化效应增效干细胞或药物靶向进入组织。
干细胞归巢:是指自体或外源性干细胞在多种因素如免疫炎症反应过程中的多种趋化因子、生长因子及黏附分子的作用下,定向趋向性迁移穿过血管内皮细胞至靶向组织并定植存活的过程。

 

摘要
背景:
国内外动物实验结果表明,超声微泡能够促进移植干细胞归巢到缺血区,增强血管新生和小动脉生成,改善缺血心肌局部血流量,恢复心肌收缩功能。
目的:探讨超声联合微泡对静脉移植骨髓间充质干细胞归巢的影响及治疗缺血性脑卒中的有效性。  
方法:插线法建立大脑中动脉栓塞大鼠模型,建模72h后,随机分为4组:PBS组(n=15),骨髓间充质干细胞组(n=18),超声+骨髓间充质干细胞组(n=18),超声+微泡+骨髓间充质干细胞组(n=18)。PBS组经尾静脉注射2mL PBS;骨髓间充质干细胞组将骨髓间充质干细胞(约3×106)用2mL PBS稀释后经尾静脉缓慢注射;超声+骨髓间充质干细胞组经颅骨超声(频率1MHz,功率2W/cm2)辐照120s,给予骨髓间充质干细胞;超声+微泡+骨髓间充质干细胞组在超声辐照前静注微泡对比剂0.1mL/kg,再给予骨髓间充质干细胞。
结果与结论:①移植后48h,超声+微泡+骨髓间充质干细胞组细胞的脑内归巢率高于骨髓间充质干细胞组和超声+骨髓间充质干细胞组,差异均有显著性意义(P<0.05);②造模后28d,超声+微泡+骨髓间充质干细胞组的神经损害程度较其余组轻,差异均有显著性意义(P<0.05);③移植后7d,超声+微泡+骨髓间充质干细胞组的脑组织含水率较其余组低,差异均有显著性意义(P<0.05);④移植后7d,超声+微泡+骨髓间充质干细胞组脑梗死体积较其余组小,差异有显著性意义(P<0.05);⑤结果表明,超声联合微泡可促进骨髓间充质干细胞的脑内靶向归巢,能够减少脑水肿和脑梗死体积,改善神经功能评分,增效骨髓间充质干细胞移植治疗缺血性脑卒中的效果。

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: 0000-0002-2635-6019(范国峰)

关键词: 干细胞, 移植, 超声微泡, 骨髓间充质干细胞, 缺血性脑卒中, 归巢

Abstract:

BACKGROUND: In animal experiments, ultrasound-mediated microbubbles can promote the homing of transplanted stem cells to the ischemic area, enhance angiogenesis and small arterial formation, improve local blood flow in the ischemic myocardium and restore myocardial contractility.
OBJECTIVE: To investigate the effect of ultrasound-mediated microbubbles on intravenously transplanted bone marrow mesenchymal stem cell (BMSC) homing and the therapeutic efficiency on ischemic stroke. 
METHODS: A middle cerebral artery occlusion (MCAO) model was induced by plug wire preparation. At 72 hours after MCAO, model rats were randomized into four groups: PBS group (n=15), BMSCs group (n=18), ultrasound+BMSCs group (n=18), ultrasound+microbubble+BMSCs group (n=18). Corresponding treatment was done in each group: 2 mL of PBS was injected via tail vein in the PBS group; about 3×106 BMSCs diluted by 2 mL of PBS were injected via tail vein slowly in the BMSCs group; after skull ultrasound radiation (1 MHz, 2 W/cm2) for 120 seconds, BMSCs were injected via tail vein slowly in the ultrasound+BMSCs group; the same process as the ultrasound+BMSCs group was done following intravenous injection of 0.1 mL/kg microbubbles in the ultrasound+microbubble+BMSCs group.
RESULTS AND CONCLUSION: (1) Forty-eight hours after BMSCs transplantation, the BMSCs homing rate in the brain was significantly higher in the ultrasound+microbubble+BMSCs group than the other two groups (P < 0.05). (2) Twenty-eight days after MCAO, nerve damage was significantly milder in the ultrasound+microbubble+BMSCs group than the other two groups (P < 0.05). (3) Seven days after transplantation, the water content in the brain tissue was significantly lower in the ultrasound+microbubble+BMSCs group than the other two groups (P < 0.05). (4) Seven days after transplantation, the cerebral infarction volume was significantly reduced in the ultrasound+microbubble+BMSCs group compared with the other two groups (P < 0.05). To conclude, ultrasound-mediated microbubbles can enhance the homing effect of intravenously transplanted BMSCs, reduce cerebral edema and cerebral infarction volume, improve the neurological function, and increase the therapeutic effect of BMSCs transplantation on ischemic stroke.

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: Brain Ischemia, Bone Marrow, Mesenchymal Stem Cell Transplantation, Microbubbles, Sonication, Tissue Engineering

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