Pathology-Responsive Self-Assembling Hydrogel Enabling Spatiotemporally Controlled Exosome Release and Redox Regulation for Intervertebral Disc Regeneration.
A pathology-adaptive self-assembling hydrogel that exploits dynamically varying catabolic enzyme activity to trigger on-demand delivery of antioxidant molecules and bioactive extracellular vesicles leads to significant structural and functional recovery of the damaged disc, as strongly evidenced in vivo animal studies.