新型多功能智能水凝胶成功研发

Core Viewpoint - The research team at Kunming University of Science and Technology has developed a novel dynamic sliding ring hydrogel that integrates multiple functions such as wound monitoring, precise fitting, and drug release, providing a new solution for regenerative medicine and precision healthcare [1][4]. Group 1: Hydrogel Composition and Mechanism - The hydrogel is constructed using a supramolecular host-guest interaction mechanism, consisting of two self-developed material components: a four-armed polyethylene glycol di-tyrosine as the guest component and a hyperbranched poly-glycerol modified α-cyclodextrin functionalized with arginine-glycine-aspartic acid peptide as the host component [1][4]. - These components form a dynamic network structure through special interactions, endowing the hydrogel with unique properties such as shear-thinning and rapid self-healing [1][4]. Group 2: Clinical Applications and Benefits - The hydrogel can be extruded for 3D printing at room temperature, allowing precise adaptation to complex wound shapes, addressing the challenge of traditional medical materials that struggle to conform to irregular wounds [4]. - The di-tyrosine core provides pH-responsive fluorescence sensing capabilities, enabling real-time feedback on pH fluctuations in the wound microenvironment, which aids healthcare professionals in assessing infection and inflammation levels visually [4]. - The application of hyperbranched poly-glycerol modification significantly enhances the hydrogel's drug loading capacity and sustained release effects for antibiotics like tobramycin, maintaining localized antibacterial activity [4][5]. Group 3: Performance and Innovation - In tests using a full-thickness infected wound model in rats, the hydrogel demonstrated excellent antibacterial properties and tissue regeneration promotion, effectively regulating inflammatory factor expression and enhancing collagen deposition and angiogenesis, thereby accelerating wound healing [4]. - This multifunctional smart hydrogel, which integrates pH-responsive fluorescence sensing, 3D printing adaptability, efficient drug loading, and biological activity, overcomes the limitations of traditional single-function medical materials, providing an integrated solution for wound healing monitoring, infection prevention, and tissue regeneration [5]. - The design concept offers significant reference for the innovative application of smart biomaterials in regenerative medicine and precision healthcare, indicating a broad clinical translation prospect [5].