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The influence of arrangement sequence on the glucose-responsive controlled release profiles of insulin-incorporated LbL films

机译:排列顺序对掺入胰岛素的LbL膜葡萄糖响应控释曲线的影响

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摘要

Insulin, glucose oxidase and positively charged star polymers were incorporated into multilayer films by the layer-by-layer (LbL) assembly method. It is interesting to find that the arrangement sequence of the three components could significantly affect the glucose-responsive controlled release behaviors. The insulin release in vitro could be tuned to linear release and obtain desired "on-off" sensitivity in response to stepwise glucose challenge, just by rearranging the assembly sequence of LbL building blocks. Further, the controlled release of insulin in vivo, as well as the hypoglycemic effect, could be obviously prolonged from 17 days to 36 days by this simple strategy without changing the dosage of all the LbL components. In addition to provide a potential glucose-responsive delivery system for insulin, the strategy described in this paper could be valuable for various drug-incorporated LbL systems with three or more components.
机译:通过逐层(LbL)组装方法将胰岛素,葡萄糖氧化酶和带正电的星形聚合物掺入多层膜中。有趣的是,这三个组件的排列顺序可能会显着影响葡萄糖响应控释行为。仅通过重新排列LbL构件的组装顺序,就可以将体外的胰岛素释放调整为线性释放,并响应逐步的葡萄糖激发而获得所需的“开-关”敏感性。此外,通过这种简单的策略,可以在不改变所有LbL成分剂量的情况下,将体内胰岛素的控制释放以及降血糖作用明显地从17天延长至36天。除了为胰岛素提供潜在的葡萄糖反应性递送系统外,本文描述的策略对于具有三个或更多组件的各种掺入药物的LbL系统也可能是有价值的。

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