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ROS-induced biodegradable polythioketal nanoparticles for intracellular delivery of anti-cancer therapeutics

机译:ROS诱导的可生物降解的聚硫缩酮纳米颗粒用于细胞内抗癌治疗

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摘要

This study introduces biodegradable poly(1,4-phenyleneacetone dimethylene thioketal) (PPADT) nanoparticles as an intracellular delivery carrier for anti-cancer therapeutic applications. PPADT is synthesized through condensation polymerization of 2,2-dimethoxypropane and 1,4-benzenedimethanethiol. The synthesized PPADT is used to prepare polymeric nanoparticles encapsulated with Nile red or paclitaxel. The presence of reactive oxygen species (ROS) facilitates the polymer degradation via breakage of the thioketal bonds, resulting in disruption of the nanoparticle structure and release of the encapsulated molecules. Therapeutic effects of the paclitaxel-loaded PPADT nanoparticles are demonstrated using PC-3 prostate cancer cells, while no significant cytotoxic effects of placebo PPADT nanoparticles are observed. Our study suggests that ROS-sensitive biodegradable PPADT nanoparticles can be a new promising material for intracellular drug delivery of insoluble drugs. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译:这项研究介绍了可生物降解的聚(1,4-亚苯基丙酮二亚甲基硫缩酮)(PPADT)纳米颗粒作为细胞内递送载体,用于抗癌治疗应用。 PPADT是通过2,2-二甲氧基丙烷和1,4-苯二甲硫醇的缩聚反应合成的。合成的PPADT用于制备用尼罗红或紫杉醇包封的聚合物纳米颗粒。活性氧(ROS)的存在通过硫代缩酮键的断裂促进了聚合物的降解,从而导致纳米颗粒结构的破坏和封装分子的释放。使用PC-3前列腺癌细胞证明了装载紫杉醇的PPADT纳米颗粒的治疗效果,而未观察到安慰剂PPADT纳米颗粒的明显细胞毒性作用。我们的研究表明,ROS敏感的可生物降解的PPADT纳米颗粒可以成为不溶性药物在细胞内给药的一种新的有希望的材料。 (C)2014韩国工业和工程化学学会。由Elsevier B.V.发布。保留所有权利。

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