血管生成
微泡
间充质干细胞
伤口愈合
医学
川地31
化学
癌症研究
免疫学
病理
小RNA
生物化学
基因
作者
Yiyao Zhang,Peng Zhang,Xiuqiu Gao,Linna Chang,Zhenhua Chen,Xifan Mei
标识
DOI:10.1016/j.msec.2020.111671
摘要
Exosomes derived from human umbilical cord mesenchymal stem cells (HUCMSCs) were helpful for injury repair, but whether HUCMSCs-derived exosomes could be encapsulated in a novel nanohydrogel to regulate diabetic wound healing was unclear. Here, HUCMSCs-derived exosomes encapsulated in a bioactive scaffold composed of polyvinyl alcohol (PVA)/alginate (Alg) nanohydrogel ([email protected]) was applied to wound healing of diabetic rats. Results found that [email protected] could facilitate the proliferation, migration and angiogenesis of HUVECs and sped up the process of diabetic wound healing. We confirmed that [email protected] contributed to the expression of the molecules related to wound healing, including SMA, SR-B1 and CD31. Besides, we also found that [email protected] up-regulated VEGF level via regulating ERK1/2 pathway. These data demonstrated that [email protected] significantly accelerated healing of diabetic wounds in rats by promoting angiogenesis.
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