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    • 6. 发明申请
    • Bio-acceptable conduits and method providing the same
    • 生物可接受的管道和提供它的方法
    • US20100047310A1
    • 2010-02-25
    • US12458526
    • 2009-07-15
    • Chien-Chung CHENJeng-Chang YANGSuhan LIEn-Sheng KEYung-Sheng LIN
    • Chien-Chung CHENJeng-Chang YANGSuhan LIEn-Sheng KEYung-Sheng LIN
    • A61F2/04C12N5/06A61F2/02B29C47/00
    • A61L27/58A61B17/1128A61L27/383A61L27/3878A61L27/48A61L2430/32D01D5/0069D01D5/24
    • Disclosed is a bio-electrospinning technique for preparing a cell-containing, oriented, continuous tubular scaffold, made of biodegradable polymer, designed for use as a nerve guide conduit (NGC) in nerve regeneration. With a coaxial spinneret, the PC-12 cell medium solution was co-electrospun into a core of tubular fibers, with PLA on the outer shell. The resulted fibers' morphology was characterized via SEM and optical microscopy, and following structural characteristics were found: 1. the larger, hollow fibers had diameters in tenth of microns and wall thicknesses around few microns, 2. an orientation in a preferred direction with the aid of a high-rotating collection device. The fluorescent PC12 cells embedded within the scaffold were cultured and nerve growth factor was added. We observed cells could not only survive the process, but also sustain their viability by undergoing differentiation process, extending neurite along the micro tubular scaffold in the desired direction. All these results demonstrate its potential application for advanced NGC.
    • 公开了一种生物电纺丝技术,用于制备由可生物降解的聚合物制成的含细胞定向的连续管状支架,设计用于神经再生中的神经导管(NGC)。 使用同轴喷丝头,将PC-12细胞培养基溶液共同电纺丝成管状纤维的核心,PLA在外壳上。 通过SEM和光学显微镜对所得纤维的形态进行了表征,并发现了以下结构特征:1.较大的中空纤维的直径为十分之一微米,壁厚约为几微米,2.优选方向的取向为 辅助高旋转收集装置。 培养嵌入支架内的荧光PC12细胞,加入神经生长因子。 我们观察到细胞不仅可以在该过程中存活,而且通过进行分化过程维持其活力,沿着所需方向沿着微管状支架延伸神经突。 所有这些结果表明其潜在应用于先进的NGC。