A Composite Hydrogel Containing Mesoporous Silica Nanoparticles Loaded With Artemisia argyi Extract for Improving Chronic Wound Healing.

Abstract

Chronic wounds are a major health problem with increasing global prevalence, which endangers the physical and mental health of those affected and is a heavy burden to healthcare providers. Artemisia argyi extract (AE) has excellent antibacterial and anti-inflammatory properties. In this research, we developed AE loaded composite hydrogel scaffold based on methacrylate gelatin (GelMA)/methacrylate hyaluronic acid (HAMA) and mesoporous silica nanoparticle (MSN) as sustained-release drug carrier vehicles for the treatment of chronic wounds. The presented GelMA/1%HAMA hydrogel possessed stable rheological properties, suitable mechanical properties, appropriate biodegradability, swelling, sustained-release AE capacity. In vitro antibacterial and cell experiments showed that the GelMA/HAMA/MSN@AE hydrogel had excellent antibacterial activity and biocompatibility and induced macrophages to differentiate into M2 phenotype. In vivo wound healing of rat full-thickness cutaneous wounds further demonstrated that the prepared GelMA/HAMA/MSN@AE hydrogel could significantly promote chronic wound healing by upregulating the expression of IL-4, TGF-β1, CD31, and α-SMA but downregulating the expression of TNF-α and IFN-γ and promoting M1-M2 macrophages polarization. Altogether, we believe that the GelMA/HAMA/MSN@AE hydrogel will have wide application prospects in healing chronic wounds.

• Authors: Leyi Xue, Tewei Deng, Rui Guo, Lu Peng, Junjun Guo, Fang Tang, Jingxia Lin, Sufang Jiang, Huijuan Lu, Xusheng Liu, Lili Deng
• Journal: Frontiers in bioengineering and biotechnology (Front Bioeng Biotechnol) Vol. 10 Pg. 825339 ( 2022) ISSN: 2296-4185 [Print] Switzerland
• PMID: 35402406 (Publication Type: Journal Article)
• Copyright: Copyright © 2022 Xue, Deng, Guo, Peng, Guo, Tang, Lin, Jiang, Lu, Liu and Deng.