This application provides a biomimetic mineralized hydrogel, relating to the field of medical
polymer materials. The biomimetic mineralized hydrogel provided in this application uses a
biodegradable polymer containing
carboxylate groups as a mineralization template, and
phosphate-containing small molecules as strong ligands and
phosphate donors, inducing Fe... 3+ In-situ mineralization forms stable iron-bearing mineralized crystals, achieving Fe³⁺ + Long-term, low-
dose sustained release, thereby delivering Fe 3+ The concentration is maintained within a safe window to allow it to exert its positive bioregulatory effects while avoiding the risks of iron overload-induced
oxidative damage and
ferroptosis. Simultaneously, it slows the release of Fe³⁺. + It can regulate cellular iron
metabolism and activate
antioxidant stress-related pathways, inhibit
ferroptosis, and create a favorable repair microenvironment for osteochondral regeneration. Experimental results show that this hydrogel not only has excellent flexibility,
biocompatibility, antibacterial properties, and
angiogenesis-promoting properties, but also promotes osteogenic and chondrogenic differentiation of cells, thereby achieving an integrated osteochondral repair effect.