Abstract:
:Diabetic wounds are a worldwide health problem causing extremely heavy public health burden and require effective treatment. Optimal strategies for treating nonhealing diabetic wounds include stem-cell-based therapy and delivery of novel drug substances, such as functional microRNAs (miRNAs); however, miRNA easily degrades in the wound microenvironment. Herein, we developed a human adipose stem-cell-derived exosome (hASC-exos)-based miRNA delivery strategy to enhance its therapeutic efficacy. The miR-21-5p mimics, as novel therapeutic candidates for diabetic wounds, were loaded into hASC-exos by electroporation, taking advantage of natural availability and biocompatibility of exosomes as extracellular miRNA transporting particles. The engineered exosomes (E-exos) exhibited excellent effects on promoting proliferation and migration of keratinocytes via Wnt/β-catenin signaling in vitro and accelerating diabetic wound healing by increasing re-epithelialization, collagen remodeling, angiogenesis, and vessel maturation in vivo. Results from this study would set the fundamentals of applying hASC-exos to deliver future drug substances and to develop cell-free therapy for wound-healing treatments.
journal_name
Mol Pharmjournal_title
Molecular pharmaceuticsauthors
Lv Q,Deng J,Chen Y,Wang Y,Liu B,Liu Jdoi
10.1021/acs.molpharmaceut.0c00177subject
Has Abstractpub_date
2020-05-04 00:00:00pages
1723-1733issue
5eissn
1543-8384issn
1543-8392journal_volume
17pub_type
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