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Adhesive barrier/directional controlled release for cartilage repair by endogenous progenitor cell recruitment

Cited 37 time in Web of Science Cited 40 time in Scopus
Authors

Lee, Jong Min; Ryu, Ji Hyun; Kim, Eun Ah; Jo, Seongyeon; Kim, Byung-Soo; Lee, Haeshin; Im, Gun-Il

Issue Date
2015-01
Publisher
Pergamon Press Ltd.
Citation
Biomaterials, Vol.39, pp.173-181
Abstract
A new design concept in controlled release chemistry is reported in this study. Unlike current depots that release drugs in all direction by an isotropic way, we demonstrate that directional release only to a clinically beneficial direction results in improved disease treatment. To achieve the directional drug release, catecholamine adhesion chemistry was used to establish robust interfacial adhesion. For this purpose, water-resistant catechol-conjugated chitosan (CHI-C) adhesive gel patch was used. We chose a cartilage repair model to test our hypothesis. The adhesive barrier exhibited directional release of platelet-derived growth factor-AA (PDGF-AA) only toward the marrow cavity defect areas. This directional PDGF-AA release greatly promoted effective recruitment of human mesenchymal stem cell (hMSCs). Moreover, the adhesive barrier prevented further migration and dispersion of the hMSCs that otherwise were not properly located to the disease site. In vivo imaging and macroscopic histological assessments demonstrated significant improvement of cartilage tissue, suggesting directional controlled release can be a general concept for improvement of tissue regeneration. This CHI-C barrier is expected to make a significant contribution in cartilage tissue engineering without cell transplantation as well as application for other tissue engineering. (C) 2014 Elsevier Ltd. All rights reserved.
ISSN
0142-9612
URI
https://hdl.handle.net/10371/204289
DOI
https://doi.org/10.1016/j.biomaterials.2014.11.006
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  • College of Engineering
  • School of Chemical and Biological Engineering
Research Area biomaterials, nanomedicine, regenerative medicine

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