An Injectable and Antifouling Supramolecular Polymer Hydrogel with Microenvironment‐Regulatory Function to Prevent Peritendinous Adhesion and Promote Tendon Repair

Author:

Wang Kuan1,Chen Danyang1,Wang Zhuoya1,Yang Jianhai1ORCID,Liu Wenguang1

Affiliation:

1. School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional Materials Tianjin University Tianjin 300350 China

Abstract

AbstractThe imbalance of extrinsic and intrinsic healing of tendon is thought to be the main cause of peritendinous adhesions. In this work, an injectable supramolecular poly(N‐(2‐hydroxypropyl) acrylamide) (PHPAm) hydrogel is prepared merely via side chain hydrogen‐bonding crosslinks. This PHPAm exhibits good antifouling and self‐healing properties. The supramolecular hydrogel simultaneously loaded with Prussian blue (PB) nanoparticles and platelet lysate (PL) is explored as a functional physical barrier, which can significantly resist the adhesion of fibrin and fibroblasts, attenuate the local inflammatory response, and enhance the tenocytes activity, thus balancing extrinsic and intrinsic healing. The PHPAm hydrogel is shown to prevent peritendinous adhesions considerably by inhibiting NF‐κB inflammatory pathway and TGF‐β1/Smad3‐mediated fibrosis pathway, thereby significantly improving tendon repair by releasing bioactive factors to regulate the tenocytes behavior. This work provides a new strategy for developing physical barriers to prevent peritendinous adhesions and promote tissue repair effectively.

Funder

State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources

National Natural Science Foundation of China

Publisher

Wiley

Subject

Materials Chemistry,Polymers and Plastics,Biomaterials,Bioengineering,Biotechnology

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