Bioinspired and Inflammation-Modulatory Glycopeptide Hydrogels for Radiation-Induced Chronic Skin Injury Repair.
Zujian FengYumin ZhangChunfang YangXiang LiuYini HuangfuChuangnian ZhangPingsheng HuangAnjie DongJinjian LiuJianfeng LiuDeling KongWeiwei WangPublished in: Advanced healthcare materials (2022)
Clinical wound management of radiation-induced skin injury (RSI) remains a great challenge due to acute injuries induced by excessive reactive oxygen species (ROS), and the concomitant repetitive inflammatory microenvironment caused by an imbalance in macrophage homeostasis. Herein, a cutaneous extracellular matrix (ECM)-inspired glycopeptide hydrogel (GK@TA gel ) is rationally designed for accelerating wound healing through modulating the chronic inflammation in RSI. The glycopeptide hydrogel not only replicates ECM-like glycoprotein components and nanofibrous architecture, but also displays effective ROS scavenging and radioprotective capability that can reduce the acute injuries after exposure to irradiation. Importantly, the mannose receptor (MR) in GK@TA gel exhibits high affinity and bioactivity to drive the M2 macrophage polarization, thereby overcoming the persistent inflammatory microenvironment in chronic RSI. The repair of RSI in mice demonstrates that GK@TA gel significantly reduces the hyperplasia of epithelial, promotes appendage regeneration and angiogenesis, and decreased the proinflammatory cytokine expression, which is superior to the treatment of commercial radioprotective drug amifostine. Collectively, the ECM-mimetic hydrogel dressing can protect the tissue from irradiation and heal the chronic wound in RSI, holding great potential in clinical wound management and tissue regeneration.
Keyphrases
- wound healing
- radiation induced
- extracellular matrix
- reactive oxygen species
- oxidative stress
- radiation therapy
- drug induced
- stem cells
- liver failure
- dna damage
- cell death
- respiratory failure
- type diabetes
- emergency department
- magnetic resonance
- signaling pathway
- binding protein
- aortic dissection
- computed tomography
- drug delivery
- hepatitis b virus
- electronic health record
- contrast enhanced
- insulin resistance
- physical activity