Sugary interfaces mitigate contact damage where stiff meets soft

Hee Young Yoo, Mihaela Iordachescu, Jun Huang, Elise Hennebert, Sangsik Kim, Sangchul Rho, Mathias Foo, Patrick Flammang, Hongbo Zeng, Daehee Hwang, J. Herbert Waite, Dong Soo Hwang

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Abstract

The byssal threads of the fan shell Atrina pectinata are non-living functional materials intimately associated with living tissue, which provide an intriguing paradigm of bionic interface for robust load-bearing device. An interfacial load-bearing protein (A. pectinata foot protein-1, apfp-1) with L-3,4-dihydroxyphenylalanine (DOPA)-containing and mannose-binding domains has been characterized from Atrina's foot. apfp-1 was localized at the interface between stiff byssus and the soft tissue by immunochemical staining and confocal Raman imaging, implying that apfp-1 is an interfacial linker between the byssus and soft tissue, that is, the DOPA-containing domain interacts with itself and other byssal proteins via Fe3 + -DOPA complexes, and the mannose-binding domain interacts with the soft tissue and cell membranes. Both DOPA- and sugar-mediated bindings are reversible and robust under wet conditions. This work shows the combination of DOPA and sugar chemistry at asymmetric interfaces is unprecedented and highly relevant to bionic interface design for tissue engineering and bionic devices.

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Original languageEnglish
Article number11923
Number of pages8
JournalNature Communications
Volume7
DOIs
Publication statusPublished - 16 Jun 2016

Bibliographical note

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material.
To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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    Yoo, H. Y., Iordachescu, M., Huang, J., Hennebert, E., Kim, S., Rho, S., ... Hwang, D. S. (2016). Sugary interfaces mitigate contact damage where stiff meets soft. Nature Communications, 7, [11923 ]. https://doi.org/10.1038/ncomms11923