Biodegradable mesostructured polymer membranes.

Biodegradable mesostructured polymer membranes.
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DOI:
10.1021/nl402251x
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发表时间:
2013-09-11
期刊:
影响因子:
10.8
通讯作者:
Kohane DS
Kohane DS
中科院分区:
材料科学1区
文献类型:
--
作者:
Tian B;Shankarappa SA;Chang HH;Tong R;Kohane DS

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细胞外基质(ECM)具有准有序网状介观结构,特征尺寸在十分之一到几百纳米之间。为具有模拟ECM的关键介观结构的工程组织制备可生物降解的合成支架的方法很少。在这里,我们提出了一种简单而通用的溶剂蒸发诱导自组装(EISA)方法来制备同心网状介结构多元醇-聚酯膜。介观结构是通过一种新的自组装过程形成的,没有共价或静电相互作用,产生的特征尺寸与ECM相匹配。介观结构材料是非离子型的、亲水的、透水的,并且可以被塑造成任意的几何形状,如形状一致的管状囊和微图案网格。重要的是,介结构聚合物是可生物降解的,可以用作工程维管组织构建的超薄临时底物。
The extracellular matrix (ECM) has a quasi-ordered reticular mesostructure with feature sizes on the order of tenths of to a few hundred nanometers. Approaches to preparing biodegradable synthetic scaffolds for engineered tissues that have the critical mesostructure to mimic ECM are few. Here we present a simple and general solvent evaporation-induced self-assembly (EISA) approach to preparing concentrically reticular mesostructured polyol-polyester membranes. The mesostructures were formed by a novel self-assembly process without covalent or electrostatic interactions, which yielded feature sizes matching those of ECM. The mesostructured materials were nonionic, hydrophilic, and water-permeable, and could be shaped into arbitrary geometries such as conformally-molded tubular sacs and micropatterned meshes. Importantly, the mesostructured polymers were biodegradable, and were used as ultrathin temporary substrates for engineering vascular tissue constructs.
可降解聚酯支架具有受控表面化学,结合最小的蛋白质吸附和特定的生物活性
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