期刊
BIOMATERIALS
卷 83, 期 -, 页码 169-181出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2016.01.002
关键词
Electrospun scaffold; Poly (dopamine); Biofunctionalization; Drug-loading; Hypertrophic scar
资金
- National Natural Science Foundation of China [51373112, 81372073]
- Jiangsu Provincial Special Program of Medical Science [BL2012004]
- Jiangsu Provincial Clinical Orthopedic Center
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Incorporation of bioactive drugs and biofunctionalization of polyester fibrous scaffolds are essential means to improve their bio-functions and histocompatibility for regenerative medicine. However, it is still a challenge to biofunctionalize such drug carriers via traditional biochemical methods while maintaining their properties without changes in drug activity and loading ratio. Here, we demonstrated a facile approach for biofunctionalization of PLGA fibrous scaffolds with various molecules (i.e., PEG polymer, RGD peptide and bFGF growth factor for cell repellent, adhesion and proliferation, respectively) via mussel-Inspired poly(dopamine) (PDA) coating in aqueous solution. By virtue of the mild and efficient nature of this approach, the drug-loaded PLGA fibers could be easily biofunctionalized and showed negligible effects on the scaffold properties, especially drug activity and loading ratio. Further, in vivo study showed that, a ginsenoside-Rg3-loaded fibrous scaffold functionalized with bFGF growth factor could not only promote the early -stage wound healing in rabbit ear wounds (bio-signal from bFGF), but also inhibit later -stage hypertrophic scars formation (release of Rg3 drug). Therefore, the mussel -inspired method for bio-modification provides a facile and effective strategy to combine drug and bio-function in one system, thus facilitating a synergistic effect of drug -therapy and bio-signal when such biomaterial is used for regenerative medicine. (C) 2016 Elsevier Ltd. All rights reserved.
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