1. Advanced Multifunctional Hydrogels for Enhanced Wound Healing through Ultra-Fast Selenol-S N Ar Chemistry.
- Author
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Wu Y, Bei Y, Li W, Lu W, Zhu J, Zhang Z, Zhang T, Liu S, Chen K, Jin H, Li L, Li M, Gao J, and Pan X
- Subjects
- Animals, Mice, Biocompatible Materials chemistry, Biocompatible Materials pharmacology, Disease Models, Animal, Wound Healing drug effects, Hydrogels chemistry, Anti-Bacterial Agents pharmacology, Anti-Bacterial Agents chemistry
- Abstract
Fabrication of versatile hydrogels in a facile and effective manner represents a pivotal challenge in the field of biomaterials. Herein, a novel strategy is presented for preparing on-demand degradable hydrogels with multilevel responsiveness. By employing selenol-dichlorotetrazine nucleophilic aromatic substitution (S
N Ar) to synthesize hydrogels under mild conditions in a buffer solution, the necessity of additives or posttreatments can be obviated. The nucleophilic and redox reactions between selenol and tetrazine culminate in the formation of three degradable chemical bonds-diselenide, aryl selenide, and dearomatized selenide-in a single, expeditious step. The resultant hydrogel manifests exceptional adaptability to intricate environments in conjunction with self-healing and on-demand degradation properties. Furthermore, the resulting material demonstrated light-triggered antibacterial activity. Animal studies further underscore the potential of integrating metformin into Se-Tz hydrogels under green light irradiation, as it effectively stimulates angiogenesis and collagen deposition, thereby fostering efficient wound healing. In comparison to previously documented hydrogels, Se-Tz hydrogels exhibit controlled degradation and drug release, outstanding antibacterial activity, mechanical robustness, and bioactivity, all without the need for costly and intricate preparation procedures. These findings underscore Se-Tz hydrogels as a safe and effective therapeutic option for diabetic wound dressings., (© 2024 The Authors. Advanced Science published by Wiley‐VCH GmbH.)- Published
- 2024
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