Thermo- and glucose-sensitive microgels with improved salt tolerance for controlled insulin release in a physiological environment

Thermo- and glucose-sensitive microgels with improved salt tolerance for controlled insulin release in a physiological environment
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对热和葡萄糖敏感的微凝胶具有改善的耐盐性,可在生理环境中控制胰岛素释放

DOI:
10.1002/pi.5634
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发表时间:
2018-07
影响因子:
3.2
通讯作者:
Jing Yang
Jing Yang
中科院分区:
化学3区
文献类型:
--
作者:
Shiling Gu;Liu Yang;Shirui Li;Junjiao Yang;Bo Zhang;Jing Yang

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通过胶体化学方法合理设计多功能微凝胶,可以同时实现对温度和葡萄糖的响应、高耐盐性和自我调节的药物输送。这种智能微凝胶是由热响应性的ven -异丙基丙烯酰胺、葡萄糖敏感的(2 -苯硼酯- 1,3 -二氧环- 5 -乙基)丙烯酸甲酯(PBDEMA)和水溶性交联剂聚乙二醇二丙烯酸酯通过沉淀乳液法制备的。这些胶体纳米颗粒对温度和离子强度的变化表现出PBDEMA成分依赖的响应行为。其中,PBDEMA含量为20.7 mol%且粒径分布窄的微凝胶能够在临床相关范围内(0-2.0 mg mL−1)适应不同葡萄糖浓度的周围介质,控制预载胰岛素的释放,在正常生理条件下具有高度稳定性,适合用于糖尿病治疗。初步实验表明,这些高度稳定的微凝胶具有用于自我调节治疗和监测治疗反应的潜力。©2018化学工业协会
The response to temperature and glucose, high salt tolerance and self‐regulated drug delivery are simultaneously probable by applying a multifunctional microgel in a rational design by a colloid chemistry method. Such smart microgels were fabricated with thermoresponsiveN‐isopropylacrylamide, glucose‐sensitive (2‐phenylboronic esters‐1,3‐dioxane‐5‐ethyl)methyl acrylate (PBDEMA) and water‐soluble crosslinker poly(ethylene glycol) diacrylate through a precipitation emulsion method. These colloidal nanoparticles exhibited PBDEMA‐composition‐dependent responsive behavior with changing temperature and ionic strength. Amongst them, the microgel with 20.7 mol% PBDEMA with a narrow size distribution is suitable for diabetes treatment because it can adapt to the surrounding medium of different glucose concentrations over a clinically relevant range (0–2.0 mg mL−1), control the release of preloaded insulin and is highly stable under normal physiological conditions. Preliminary experiments suggest these highly stable microgels have the potential to be used for self‐regulated therapy and monitoring the response to treatment. © 2018 Society of Chemical Industry
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