Transplantation of Cardiac Mesenchymal Stem Cell-Derived Exosomes for Angiogenesis.

Transplantation of Cardiac Mesenchymal Stem Cell-Derived Exosomes for Angiogenesis.
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DOI:
10.1007/s12265-018-9824-y
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发表时间:
2018-10
影响因子:
3.4
通讯作者:
Tang Y
Tang Y
中科院分区:
医学3区
文献类型:
--
作者:
Ju C;Li Y;Shen Y;Liu Y;Cai J;Liu N;Ma G;Tang Y

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我们证明了由心脏间充质干细胞(C-MSC-Exo)分泌的外泌体在保护急性缺血心肌免受再灌注损伤中的作用。目的探讨来源于C-MSC的exosomes对血管生成的影响。将C-MSC-Exo或PBS肌肉注射到缺血后肢。采用激光多普勒成像技术评价肢体血流灌注情况。我们观察到,在诱导肢体缺血后2周和1个月,与用PBS治疗的缺血肢体相比,用C-MSC-Exo治疗的缺血肢体表现出改善的血液灌注。为了探索C-MSC-Exo血管生成作用的潜在机制,我们进行了microRNA阵列分析,并鉴定mmu-miR-7116- 5 p为C-MSC-Exo中检测到的最丰富的富集miRNA。生物信息学分析表明,miR-7116- 5 p负调控蛋白质的多聚泛素化。总之,我们的研究表明,肢体缺血后肌内递送C-MSC-Exo改善了血液灌注,并且我们鉴定了优先富集在C-MSC-Exo中的最丰富的miRNA。
We demonstrated the effects of exosomes secreted by cardiac mesenchymal stem cells (C-MSC-Exo) in protecting acute ischemic myocardium from reperfusion injury. To investigate the effect of exosomes from C-MSC on angiogenesis. We injected C-MSC-Exo or PBS intramuscularly into ischemic hind limb. Blood perfusion of limb was evaluated by laser Doppler Imaging. We observed that ischemic limb treated with C-MSC-Exo exhibit improved blood perfusion compared to ischemic limb treated with PBS at 2 weeks and 1 month after induction of limb ischemia. To explore the potential mechanisms underlying C-MSC-Exo’s angiogenetic effect, we performed microRNA array analysis, and identify mmu-miR-7116-5p as the most abundant enriched miRNA detected in C-MSC-Exo. Bioinformatics’ analysis shows that miR-7116-5p negatively regulates of protein polyubiquitination. In conclusion, our study demonstrated that intramuscular delivery of C-MSC-Exo after limb ischemia improves blood perfusion, and we identified most abundant miRNAs that are preferentially enriched in C-MSC-Exo.
使用差分超速离心和三种商业试剂对血清外泌体分离的比较研究。
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