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首页> 外文期刊>Materials science & engineering >Acid and reduction stimulated logic 'and'-type combinational release mode achieved in DOX-loaded superparamagnetic nanogel
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Acid and reduction stimulated logic 'and'-type combinational release mode achieved in DOX-loaded superparamagnetic nanogel

机译:在载有DOX的超顺磁性纳米凝胶中实现了酸和还原刺激的逻辑“和”型组合释放模式

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摘要

A superparamagnetic nanogel featured with a logic "and"-rype pH/reduction combinational stimulated release mode was fabricated as a drug delivery system by virtue of parallel crosslinking. The disulflde bond and electrostatic interaction between thiolated alginate (SA-SH) and thiolated/aminated iron oxide nanopartides (SH-MION-NH_2) were employed to achieve the mechanism. The obtained DOX-loaded magnetic nanogel is 122.7 ± 20.3 nm in size with superparamagnetism. The combinational conditions of pH 5.0/10 mM glutathione (GSH) stimulated a significantly high accumulative release. However, either pH 7.4/10 mM (GSH) or pH 5.0 alone induced much low release. This verified the typical logic "and"-type combinarjonally stimulated release mode. In vitro cytotoxicity tests clearly illustrated the effective selectivity of killing the human cervical cancer cells (HeLa) with IC50 of 1.01 μg/mL and the human hepatoma cells (HepG2) with IC_(50) of 1.57 μg/mL but significantly low cytotoxicity to the cercopithecus aethiops kidney cells (Vero). CLSM presented the internationalization of the nanogel into cytoplasm and nuclei with time. In vivo investigation revealed that the selective intratumoral accumulation and antitumor efficacy were considerably advantageous over free DOX whereas low systemic toxicity exhibited up-regulated security as compared to free DOX. Overall, the DOX-loaded magnetic nanogel with enhanced antitumor efficacy and down-regulated adverse effect was a promising nanoplatform for the clinical chemotherapy of malignancy.
机译:通过平行交联将具有逻辑“和” -ryph pH /还原组合刺激释放模式的超顺磁性纳米凝胶制成药物递送系统。硫醇化藻酸盐(SA-SH)与硫醇化/胺化氧化铁纳米粒子(SH-MION-NH_2)之间的二硫键和静电相互作用被用于实现这一机理。所获得的负载有DOX的磁性纳米凝胶的尺寸为122.7±20.3 nm,具有超顺磁性。 pH 5.0 / 10 mM谷胱甘肽(GSH)的组合条件刺激了非常高的累积释放。但是,单独的pH 7.4 / 10 mM(GSH)或pH 5.0都会引起很低的释放。这验证了典型的逻辑“和”型组合刺激释放模式。体外细胞毒性测试清楚地说明了杀死IC50为1.01μg/ mL的人宫颈癌细胞(HeLa)和杀死IC_(50)为1.57μg/ mL的人肝癌细胞(HepG2)的有效选择性,但对癌细胞的细胞毒性明显较低cercopithecus aethiops肾细胞(Vero)。 CLSM提出了随着时间的推移,纳米凝胶国际化进入细胞质和细胞核的过程。体内研究表明,与游离DOX相比,选择性肿瘤内蓄积和抗肿瘤功效明显优于游离DOX,而低全身毒性表现出上调的安全性。总体而言,DOX负载的磁性纳米凝胶具有增强的抗肿瘤功效和下调的不良反应,是用于临床恶性肿瘤化疗的有前途的纳米平台。

著录项

  • 来源
    《Materials science & engineering》 |2016年第8期|354-363|共10页
  • 作者单位

    Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China;

    Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China;

    Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China;

    Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China;

    Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China;

    College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China;

    Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China;

    Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China;

    College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China;

    Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China,Wuhan Institute of Technology, Xiongchu Ave, Wuhan 430073, Hubei, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Controlled release; pH/reduction responsiveness; Combinational stimulation; Superparamagnetism; Nanogel;

    机译:控释;pH /还原反应性;组合刺激;超顺磁性纳米凝胶;

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