Int J Biol Macromol:组织工程又一有前景的支架材料

2017-12-04 MedSci MedSci原创

羟丙基壳聚糖(HPCH)是壳聚糖的水溶性衍生物,由于其生物相容性和生物可降解性广泛用于组织工程和伤口愈合中。氧化石墨烯(GO)是一种碳基纳米材料,能够赋予支架所需的性能。因此,将GO整合到HPCH中可以生产基于HPCH的支架,具有更好的膨胀特性、机械强度和稳定性。本研究采用HPCH和GO作为组织工程支架材料,制备了GO含量不同(0.5,1,3和4wt。%)的羟丙基壳聚糖接枝石墨烯(HPCH-g-G

羟丙基壳聚糖(HPCH)是壳聚糖的水溶性衍生物,由于其生物相容性和生物可降解性广泛用于组织工程和伤口愈合中。氧化石墨烯(GO)是一种碳基纳米材料,能够赋予支架所需的性能。因此,将GO整合到HPCH中可以生产基于HPCH的支架,具有更好的膨胀特性、机械强度和稳定性。

本研究采用HPCH和GO作为组织工程支架材料,制备了GO含量不同(0.5,1,3和4wt。%)的羟丙基壳聚糖接枝石墨烯(HPCH-g-GO)。通过FTIR和XRD分析证实了HPCH-g-GO的形成。以HPCH-g-GO为基质材料,以戊二醛为交联剂,采用冷冻干燥法制备三维多孔支架。SEM分析显示,HPCH-g-GO支架表现出均匀的孔隙率。随着GO含量的增加,支架孔径和孔隙率降低。此外,支架具有良好的膨胀能力、保水能力、机械强度和体外降解性能。与对照相比,HPCH-g-GO支架无论其GO含量如何细胞均表现出良好的存活力。

总之,这些结果表明,HPCH-g-GO支架可以用作组织工程的一种较好的支架材料。

原始出处:

Sivashankari PR, Moorthi A, et al., Preparation and characterization of three-dimensional scaffolds based on hydroxypropyl chitosan-graft-graphene oxide. Int J Biol Macromol. 2017 Nov 14. pii: S0141-8130(17)33003-9. doi: 10.1016/j.ijbiomac.2017.11.033.

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    2018-09-22 仁者大医
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    2018-11-08 yb6560
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    0

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