综述了纳米纤维组织工程支架的最新研究进展,评述了其制备技术、特点及其存在的纳米效应.指出天然细胞外基质为三维纳米纤维结构,其纤维连续,直径为纳米级,包含比例确定的纳米与微米空间,且与细胞存在纳米水平的相互作用;然而,目前的人工纤维支架,其纤维直径多为微米或数百纳米,或者缺乏纳米空间.采用生物纳米技术获得的细菌纤维素纳米纤维,其直径小于10 nm,自身呈三维网状结构,富含纳米空间,是构建新一代纳米组织工程支架的理想材料.
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