Functionalized alginate/chitosan biocomposites consisted of cylindrical struts and biologically designed for chitosan release
- Authors
- 이경호[이경호]; 안성현[안성현]; 최창현[최창현]; 이대원[이대원]; 김근형[김근형]; 정원교[정원교]
- Issue Date
- 2014
- Publisher
- 한국물리학회
- Keywords
- Alginate; Chitosan; Biocomposite; Scaffold; Drug-release system
- Citation
- Current Applied Physics, v.14, no.8, pp.1105 - 1115
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Current Applied Physics
- Volume
- 14
- Number
- 8
- Start Page
- 1105
- End Page
- 1115
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/55201
- ISSN
- 1567-1739
- Abstract
- A novel alginate/chitosan composite scaffold was developed. The composite scaffolds were fabricated at low temperature using a three-axis robot system connected to a micro-dispenser and a core/shell nozzle.
The structure of the composite scaffolds included hollow struts; deposited chitosan on the inner walls (core region) of the struts reacted electrostatically with the alginate layer (shell region). The fabricated, highly porous composite scaffolds exhibited excellent mechanical properties and controllable chitosan release, which was closely dependent on the weight fraction of the alginate in the shell region. The tensile strength in the dry state was ~1.8-fold greater than that of pure alginate scaffold due to the ionic interaction between alginate and chitosan. To determine the feasibility of using the developed scaffold in tissue regeneration applications, in vitro cellular responses were evaluated using osteoblast-like-cells (MG63). The cell proliferation on the composite scaffold was ~3.4-fold greater than that on the pure alginate scaffold. Alkaline phosphate activity and calcium deposition of the composite scaffold after 14 and 21 days of cell culture were significantly enhanced (1.6- and 1.8-fold greater, respectively) compared with those of the pure alginate scaffold. These results suggested that the alginate/chitosan composite scaffolds with a controlled chitosan release have great potential for use in regenerating various tissues.
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- Appears in
Collections - Biotechnology and Bioengineering > Department of Bio-mechatronic Engineering > 1. Journal Articles
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