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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 375 - 387 (13page)
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Increasing bioactivity and mechanical properties of polymers to produce more suitable scaffold for tissue engineering is a recurrent goal in the development of new biomedical materials. In this study, collagen-functionalized poly (lactic acid), PLA, was obtained by means of a simple grafting route, and electrospun scaffolds were produced to grow cells in vitro; their bioactivity was compared with scaffolds made of physical blends of PLA and collagen. Grafting was verified via nuclear magnetic resonance, attenuated total reflection-Fourier transform infrared and X-ray photoelectron spectroscopy. The cell adhesion performance of the scaffolds was studied using macrophages. Elastic modulus (74.7 megapascals) and tensile strength (3.0 megapascals) of the scaffold made from PLA grafted with collagen were substantially higher than the scaffolds made from physical blends of collagen and PLA: 32 and 2.16 megapascals, respectively, implying a more resistant material because of the chemical bond of the polypeptide to PLA. Besides, the fibers had more uniform diameter without defects. Scaffolds made from PLA grafted with collagen presented four-fold increase in cell adhesion than those of PLA blended with collagen. Furthermore, cell spreading within the scaffolds occurred only when collagen-functionalized poly (lactic acid) was used. These results open a new option for the easy tailoring of nanofiber-based scaffolds in three dimensions for tissue engineering.
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참고문헌 (53)
참고문헌 신청
Laurie GW / 1989 / In situ hybridization reveals temporal and spatial changes in cellular expression of mRNA for a laminin receptor, laminin, and basement membrane (type IV) collagen in the developing kidney / J Cell Biol 109:1351~1362
Sanes JR / 1990 / Molecular heterogeneity of basal laminae: isoforms of laminin and collagen IV at the neuromuscular junction and elsewhere / J Cell Biol 111:1685~1699
Werb Z / 1998 / Extracellular matrix remodeling during morphogenesis / Ann N Y Acad Sci 857:110~118
Boudreau N / 1995 / From laminin to lamin: regulation of tissue-specific gene expression by the ECM / Trends Cell Biol 5:1~4
Ingber D / 1991 / Extracellular matrix and cell shape: potential control points for inhibition of angiogenesis / J Cell Biochem 47:236~241
Sanes JR / 1990 / Molecular heterogeneity of basal laminae: isoforms of laminin and collagen IV at the neuromuscular junction and elsewhere / J Cell Biol 111:1685~1699
Werb Z / 1998 / Extracellular matrix remodeling during morphogenesis / Ann N Y Acad Sci 857:110~118
Boudreau N / 1995 / From laminin to lamin: regulation of tissue-specific gene expression by the ECM / Trends Cell Biol 5:1~4
Ingber D / 1991 / Extracellular matrix and cell shape: potential control points for inhibition of angiogenesis / J Cell Biochem 47:236~241
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