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In vitro study of smooth muscle cells on polycaprolactone and collagen nanofibrous matrices.

机译:聚己内酯和胶原纳米纤维基质上平滑肌细胞的体外研究。

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摘要

Biodegradable polycaprolactone and collagen nanofibers were produced by electrospinning, with fiber diameters of around 300-700nm and features similar to the extracellular matrix of natural tissue. Human coronary artery smooth muscle cells (SMCs) seeded on nanofibrous matrices tend to maintain normal phenotypic shape and growth tends to be guided by the nanofiber orientation. The SMC and nanofibrous matrix interaction was observed by SEM, MTS assay, trypan blue exclusion method and laser scanning confocal microscopy. The results showed that the proliferation and growth rate of SMCs were not different on polycaprolactone (PCL) nanofibrous matrices coated with collagen or tissue culture plates. PCL nanofibrous matrices coated with collagen showed that the SMCs migrated towards inside the nanofibrous matrices and formed smooth muscle tissue. This approach may be useful for engineering a variety of tissues in various structures and shapes, and also to demonstrate the importance of matching both the initialmechanical properties and degradation rate of nanofibrous matrices to the specific tissue engineering.
机译:可生物降解的聚己内酯和胶原纳米纤维是通过静电纺丝生产的,纤维直径约为300-700nm,其功能类似于天然组织的细胞外基质。接种在纳米纤维基质上的人冠状动脉平滑肌细胞(SMC)趋向于保持正常的表型形状,并且生长趋于受纳米纤维取向的引导。通过SEM,MTS法,锥虫蓝排除法和激光扫描共聚焦显微镜观察SMC与纳米纤维基质的相互作用。结果表明,在涂有胶原蛋白或组织培养板的聚己内酯(PCL)纳米纤维基质上,SMCs的增殖和生长速率没有差异。涂有胶原蛋白的PCL纳米纤维基质显示SMC向纳米纤维基质内部迁移并形成平滑肌组织。该方法对于工程化具有各种结构和形状的多种组织可能是有用的,并且还证明了使纳米纤维基质的初始机械性能和降解速率与特定组织工程相匹配的重要性。

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