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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.4
- 수록면
- 155 - 156 (2page)
- DOI
- 10.1007/s13770-023-00537-w
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초록· 키워드
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Bone morphogenic protein-2 (BMP-2)-conjugated three-dimensional (3-D)-printed poly (L-lactic acid)(PLLA) scaffold is likely promising as an effective bone substitute for enhancing bone regeneration of massive bone defects caused by tumor resection, traumatic injury, or congenital diseases. The authors developed a new bone substitute using a novel strategy composed of 3-D-printed PLLA scaffolds through a sequential coating of catechol-conjugated alginate (C-AL), BMP-2, and collagen (CO). The 3-D-printed PLLA scaffold was successfully obtained with 5 mm of diameter, 1 mm of thickness, 400 μm of pore size, 187–230 μm of grid thickness, and 82% of porosity. Alkaline phosphatase (ALP) activity of the BMP-2-immobilized PLLA scaffold in MC3T3-E1 and W-20-17 cells was more increased than BMP-2 itself due to the controlled release of BMP-2 from the scaffold. Tenfold new bone formation for the BMP-2-immobilized PLLA scaffold was obtained by micro-CT analysis than PLLA scaffold without BMP-2 weeks after 4 weeks of transplantation model mouse. Further another big animal model study should be performed before clinical trials.
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