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3D Manufacture of Cold Nanocomposite Channels Facilitates Neural Differentiation and Regeneration

机译:纳米复合材料冷通道的3D制造有助于神经分化和再生

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摘要

Conductive nerve guidance channels are promising alternative therapies in peripheral nerve tissue engineering because they have excellent biocompatibility, biodegradation, and electrical conductivity. Gold, a kind of conductive material, is investigated widely concerning its potential roles in promoting peripheral nerve repair. In the present study, a polydopamine-coated gold/polycaprolactone nanoscaffold is fabricated via a multilayer molding method and its proliferative, adhesive, and neural differentiation potential for bone marrow mesenchymal stem cells (BMSCs) and Schwann cells (SCs) in vitro is evaluated. Functional, electrophysiological evaluation, and morphological assessment all exhibit satisfactory recovery of sciatic nerves with increased thickness and number of myelinated fibers in vivo. In addition, increased microvessels are confirmed in gold nanocomposite channels, indicating their potential benefits in angiogenesis. Functional regeneration is further enhanced by neurotrophic growth factors released from BMSC and SC loading. The gold nanocomposite channel will have great potential in peripheral nerve restoration.
机译:传导性神经引导通道具有良好的生物相容性,生物降解性和导电性,因此在周围神经组织工程中有望成为替代疗法。黄金是一种导电材料,被广泛地研究了其在促进周围神经修复中的潜在作用。在本研究中,通过多层成型方法制备了聚多巴胺涂层的金/聚己内酯纳米支架,并评估了其在体外对骨髓间充质干细胞(BMSCs)和雪旺细胞(SCs)的增殖,黏附和神经分化潜能。功能,电生理评估和形态学评估均显示出令人满意的坐骨神经恢复,并且体内的髓鞘纤维的厚度和数量增加。另外,在金纳米复合材料通道中证实了增加的微血管,表明它们在血管生成中的潜在益处。从BMSC和SC负荷释放的神经营养生长因子进一步增强了功能再生。金纳米复合材料通道将在周围神经修复中具有巨大潜力。

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