Tissue-Integratable and Biocompatible Photogelation by the Imine Crosslinking Reaction.

Yang, Yunlong; Zhang, Jieyuan; Liu, Zhenzhen; Lin, Qiuning; Liu, Xiaolin; Bao, Chunyan; Wang, Yang; Zhu, Linyong · Adv Mater · 2016

basic_science · Level V

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Abstract

A novel photogelling mechanism by the phototriggered-imine-crosslinking (PIC) reaction is demonstrated. Hyaluronic acid grafted with o-nitrobenzene, a photogenerated aldehyde group, can quickly photo-crosslink with amino-bearing polymers or proteins. Once the in situ photogelling on a wound occurs, the PIC gelling process can well integrate a hydrogel with surrounding tissue by covalent bonding, thus making it a powerful tool for tissue engineering and regenerative medicine.

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