Exosomes derived from human adipose mensenchymal stem cells accelerates cutaneous wound healing via optimizing the characteristics of fibroblasts.

Exosomes derived from human adipose mensenchymal stem cells accelerates cutaneous wound healing via optimizing the characteristics of fibroblasts.
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源自人类脂肪间充质干细胞的外泌体通过优化成纤维细胞的特性加速皮肤伤口愈合。

DOI:
10.1038/srep32993
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发表时间:
2016-09-12
期刊:
影响因子:
4.6
通讯作者:
Chen L
Chen L
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Hu L;Wang J;Zhou X;Xiong Z;Zhao J;Yu R;Huang F;Zhang H;Chen L

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软组织创伤治疗中的两个主要挑战是愈合时间延长和瘢痕形成。脂肪间充质干细胞(Adipose mesenchymal stem cells,ASCs)在组织再生中起着重要作用,最近的研究表明,干细胞分泌的外泌体可能有助于旁分泌信号传导。在这项研究中,我们研究了ASCs衍生的外泌体(ASCs-Exos)在皮肤伤口愈合中的作用。我们发现ASCs-Exos可以被成纤维细胞摄取和内化,以剂量依赖的方式刺激细胞迁移、增殖和胶原合成,并增加N-cadherin、cyclin-1、PCNA和胶原I、III的基因表达。体内示踪实验表明,ASCs-Exos可以在小鼠皮肤切口模型中被募集到软组织伤口区域,并显著加速皮肤伤口愈合。组织学分析显示,在伤口愈合的早期阶段通过全身施用外泌体增加胶原蛋白I和III的产生,而在晚期阶段,外泌体可能抑制胶原蛋白表达以减少瘢痕形成。总的来说,我们的研究结果表明,ASCs-Exos可以通过优化成纤维细胞的特性来促进皮肤伤口愈合。我们的研究结果为ASCs-Exos在软组织修复中的应用提供了新的视角和治疗策略。
Prolonged healing and scar formation are two major challenges in the treatment of soft tissue trauma. Adipose mesenchymal stem cells (ASCs) play an important role in tissue regeneration, and recent studies have suggested that exosomes secreted by stem cells may contribute to paracrine signaling. In this study, we investigated the roles of ASCs-derived exosomes (ASCs-Exos) in cutaneous wound healing. We found that ASCs-Exos could be taken up and internalized by fibroblasts to stimulate cell migration, proliferation and collagen synthesis in a dose-dependent manner, with increased genes expression of N-cadherin, cyclin-1, PCNA and collagen I, III. In vivo tracing experiments demonstrated that ASCs-Exos can be recruited to soft tissue wound area in a mouse skin incision model and significantly accelerated cutaneous wound healing. Histological analysis showed increased collagen I and III production by systemic administration of exosomes in the early stage of wound healing, while in the late stage, exosomes might inhibit collagen expression to reduce scar formation. Collectively, our findings indicate that ASCs-Exos can facilitate cutaneous wound healing via optimizing the characteristics of fibroblasts. Our results provide a new perspective and therapeutic strategy for the use of ASCs-Exos in soft tissue repair.
追赶性生长期间脂肪组织从头脂肪生成在葡萄糖稳态中的作用:有利于脂肪储存的兰德尔循环。
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