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Carbohydr Polym. 2019 Mar 1;207:628-639. doi: 10.1016/j.carbpol.2018.12.020. Epub 2018 Dec 11.

A terpolymeric hydrogel of hyaluronate-hydroxyethyl acrylate-gelatin methacryloyl with tunable properties as biomaterial.

Author information

1
Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea; Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.
2
Department of Otorhinolaryngology, College of Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
3
Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.
4
Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea; Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea. Electronic address: insup@seoultech.ac.kr.

Abstract

Here, we report synthesis of a terpolymeric covalently crosslinked hydrogel of hyaluronate (HA) as biomaterial with elasticity, mechanical properties and cell interactions via conventional free radical polymerization technique. To provide elasticity and mechanical properties, 2-hydroxyethyl acrylate (HEA) was grafted in HA, while to tune cellular interactions, gelatin methacryloyl (GM) was used as crosslinker. The composition and probable structure of the terpolymer (HA-g-pHEA-x-GM) were analysed by FTIR, 1H HR-MAS-NMR, and TGA analyses. The SEM and texture analyses of hydrogel showed interconnected micro-porous network and high mechanical properties, respectively. In vitro biocompatibility was studied against human chondrocytes, whereas, in vivo biocompatibility and tissue regeneration were confirmed using mouse model. The hydrogel releases model protein-bovine serum albumin, and corticosteroid drug-dexamethasone in a sustain way at pH 7.4 and 37 °C. Overall, the tunable mechanical properties, micro-porous network, and cytocompatibility of the HA-g-pHEA-x-GM hydrogel highlights its potential applicability in cartilage tissue engineering and drug delivery.

KEYWORDS:

Bovine serum albumin; Dexamethasone; Drug delivery; Human chondrocytes; Hyaluronate; Hydrogel

PMID:
30600048
DOI:
10.1016/j.carbpol.2018.12.020
[Indexed for MEDLINE]

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