Mussel-mimetic protein-based adhesive hydrogel

Bum Jin Kim, Dongyeop X. Oh, Sangsik Kim, Jeong Hyun Seo, Dong Soo Hwang, Admir Masic, Dong Keun Han, Hyung Joon Cha

Research output: Contribution to journalArticlepeer-review

267 Scopus citations

Abstract

Hydrogel systems based on cross-linked polymeric materials which could provide both adhesion and cohesion in wet environment have been considered as a promising formulation of tissue adhesives. Inspired by marine mussel adhesion, many researchers have tried to exploit the 3,4-dihydroxyphenylalanine (DOPA) molecule as a cross-linking mediator of synthetic polymer-based hydrogels which is known to be able to achieve cohesive hardening as well as adhesive bonding with diverse surfaces. Beside DOPA residue, composition of other amino acid residues and structure of mussel adhesive proteins (MAPs) have also been considered important elements for mussel adhesion. Herein, we represent a novel protein-based hydrogel system using DOPA-containing recombinant MAP. Gelation can be achieved using both oxdiation-induced DOPA quinone-mediated covalent and Fe3+-mediated coordinative noncovalent cross-linking. Fe 3+-mediated hydrogels show deformable and self-healing viscoelastic behavior in rheological analysis, which is also well-reflected in bulk adhesion strength measurement. Quinone-mediated hydrogel has higher cohesive strength and can provide sufficient gelation time for easier handling. Collectively, our newly developed MAP hydrogel can potentially be used as tissue adhesive and sealant for future applications.

Original languageEnglish
Pages (from-to)1579-1585
Number of pages7
JournalBiomacromolecules
Volume15
Issue number5
DOIs
StatePublished - 12 May 2014
Externally publishedYes

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