A Bioinspired Injectable, Adhesive And Self-Healing Hydrogel with Dual Hybrid Network for Neural Regeneration After Spinal Cord Injury.

Hydrogel-based regenerated scaffold shows promise as a platform for neural regeneration following spinal cord injury (SCI). Nevertheless, the persistent problem of poor mechanical strength and limited integration with the host tissue still exists. In this study, we developed a bioinspired hydrogel with highly sophisticated features for neural regeneration after SCI. The hydrogel is composed of DOPA-grafted chitosan and a designer peptide, offering a unique set of qualities such as being injectable, having self-healing abilities, and adhering to tissues. Compared to the conventional hydrogel, our hydrogel insured as significant promotion of the immune response modulation and axon regrowth while featuring synapse formation of various neurotransmitters and myelin regeneration. Subsequently, functional recoveries were enhanced, including motor function, sensory function and particularly bladder defect repair. These positive findings demonstrate that the hydrogel has great potential as a strategy for repairing SCI. Moreover, the versatility of this strategy goes beyond neural regeneration and holds promise for tissue regeneration in other contexts. Overall, our proposed hydrogel represented an innovative and multifaceted tool for engineering structures in the biomedical field. This article is protected by copyright. All rights reserved.