径向排列的静电纺纳米纤维作为硬脑膜替代品,用于伤口闭合和组织再生应用。

Radially aligned, electrospun nanofibers as dural substitutes for wound closure and tissue regeneration applications.

机构信息

Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA.

出版信息

ACS Nano. 2010 Sep 28;4(9):5027-36. doi: 10.1021/nn101554u.

Abstract

This paper reports the fabrication of scaffolds consisting of radially aligned poly(ε-caprolactone) nanofibers by utilizing a collector composed of a central point electrode and a peripheral ring electrode. This novel class of scaffolds was able to present nanoscale topographic cues to cultured cells, directing and enhancing their migration from the periphery to the center. We also established that such scaffolds could induce faster cellular migration and population than nonwoven mats consisting of random nanofibers. Dural fibroblast cells cultured on these two types of scaffolds were found to express type I collagen, the main extracellular matrix component in dural mater. The type I collagen exhibited a high degree of organization on the scaffolds of radially aligned fibers and a haphazard distribution on the scaffolds of random fibers. Taken together, the scaffolds based on radially aligned, electrospun nanofibers show great potential as artificial dural substitutes and may be particularly useful as biomedical patches or grafts to induce wound closure and/or tissue regeneration.

摘要

本文报告了通过利用由中心点电极和外围环电极组成的收集器来制造由放射状排列的聚己内酯纳米纤维组成的支架。这种新型支架能够向培养的细胞呈现纳米级的形貌线索,引导并增强它们从外围向中心的迁移。我们还发现,与由随机纳米纤维组成的无纺垫相比,这种支架能够诱导更快的细胞迁移和增殖。在这两种支架上培养的硬脑膜成纤维细胞被发现表达 I 型胶原蛋白,这是硬脑膜中主要的细胞外基质成分。I 型胶原蛋白在放射状排列的纤维支架上表现出高度的组织化,而在随机纤维支架上则呈随意分布。总的来说,基于放射状排列的电纺纳米纤维的支架具有作为人工硬脑膜替代品的巨大潜力,并且可能特别有用作为生物医学贴片或移植物,以诱导伤口闭合和/或组织再生。

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