Volume 43, Issue 7 pp. 775-782
Concise Report

Bioinspired Coordination for Fabricating Self-healing and Injectable Hydrogels with Antibacterial and Immunoregulatory Activities

Youlu Diao

Youlu Diao

Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, 301 Xuefu Rd, Zhenjiang, Jiangsu, 212013 China

The authors contributed equally to this work.

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Jia Gao

Jia Gao

Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, 301 Xuefu Rd, Zhenjiang, Jiangsu, 212013 China

The authors contributed equally to this work.

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Xinrui Li

Xinrui Li

Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, 301 Xuefu Rd, Zhenjiang, Jiangsu, 212013 China

Dedicated to the Special Issue of Biomimetic Materials.

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Miao Wang

Corresponding Author

Miao Wang

Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, 301 Xuefu Rd, Zhenjiang, Jiangsu, 212013 China

E-mail: [email protected]; [email protected]Search for more papers by this author
Guoqing Pan

Corresponding Author

Guoqing Pan

Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, 301 Xuefu Rd, Zhenjiang, Jiangsu, 212013 China

E-mail: [email protected]; [email protected]Search for more papers by this author
First published: 31 December 2024
Citations: 3

Comprehensive Summary

Inspired by the molecular mechanism of mussel adhesion, here, we developed a class of injectable and self-healing hydrogels based on natural polysaccharide hyaluronic acid (HA). The dynamic property of hydrogels is derived from histidine-metal coordination, which widely exists in the mussel adhesive plaque. To mimic components of mussel byssal threads, we first grafted histidine-containing peptides onto the HA chains. Followed by the addition of Zn2+ ions, the modified HA could then transform into a pH-sensitive hydrogel network (HA-His-Zn) with tunable sol-gel transitions. The dynamic metal-ligand coordination could significantly enhance the mechanical properties of HA hydrogels and also endow them with self-healing and injectable abilities. In addition, the HA-His-Zn hydrogels could also exhibit antibacterial and immunoregulatory activities due to the bioactive Zn2+ ions. These results, together with the dynamic properties and good biocompatibility, indicated that the HA-His-Zn hydrogels could be applied as a class of easy-to-handle scaffold materials for regeneration medicine, particularly for tissue traumas with chronic inflammations and infections.

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