Journal
ADVANCED HEALTHCARE MATERIALS
Volume 11, Issue 6, Pages -Publisher
WILEY
DOI: 10.1002/adhm.202102027
Keywords
angiogenesis; anti-inflammation; milk extracellular vesicles; tissue remodeling; wound healing
Funding
- Mid-career Researcher Program [NRF-2019R1A2C2010408]
- Brain Pool Program [NRF-2020H1D3A1A02081401]
- Korea Institute of Science and Technology (KIST)
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Wound healing is a complex process involving various biological events, requiring a multifaceted approach for successful transitions between different phases. Bovine milk extracellular vesicles have shown promising results in promoting wound healing, especially in enhancing fibroblast proliferation, angiogenesis, and tissue remodeling. Colostrum-derived milk EVs are particularly effective in promoting re-epithelialization, angiogenesis, and maintaining stability and efficacy even after freeze-drying procedures, showing great potential as anti-inflammatory therapeutics for cutaneous wounds.
As wound healing is an extremely complicated process, consisting of a cascade of interlocking biological events, successful wound healing requires a multifaceted approach to support appropriate and rapid transitions from the inflammatory to proliferative and remodeling phases. In this regard, here the potential use of bovine milk extracellular vesicles (EVs) to enhance wound healing is investigated. The results show that milk EVs promote fibroblast proliferation, migration, and endothelial tube formation. In particular, milk EVs derived from colostrum (Colos EVs) contain various anti-inflammatory factors facilitating the transition from inflammation to proliferation phase, as well as factors for tissue remodeling and angiogenesis. In an excisional wound mouse model, Colos EVs promote re-epithelialization, activate angiogenesis, and enhance extracellular matrix maturation. Interestingly, Colos EVs are further found to be quite resistant to freeze-drying procedures, maintaining their original characteristics and efficacy for wound repair after lyophilization. These findings on the superior stability and excellent activity of milk Colos EVs indicate that they hold great promise to be developed as anti-inflammatory therapeutics, especially for the treatment of cutaneous wounds.
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