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Updated: Jul 18, 2025

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硫二氧化物产药纳米颗粒用于有效的瘤抑制

Yu Zhang¹, Xinming Liu¹, Pan He²

¹Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.

Biomacromolecules

|August 23, 2023

概括

这项研究引入了一种新的二氧化硫 (SO2) 聚合原药. SO2纳米颗粒有效地向癌细胞,释放治疗气体以诱导亡并根除瘤.

科学领域:

生物医学工程生物医学工程
材料科学材料科学材料科学
在瘤学瘤学.

背景情况:

二氧化硫 (SO2) 是一种安全有效的抗癌疗法.
精确控制SO2释放对于优化治疗结果至关重要.

研究的目的:

设计和合成一种新型的醇响应性多SO2原药.
研究自组装的SO2纳米粒子 (SO2-NP) 的抗癌潜力.

主要方法:

通过SO2-NCA的环开聚合合成一种醇响应性多SO2原药 (PEG-b-PLys-DNs).
描述了自组装的SO2-NP,并评估了它们在4T1细胞中的细胞吸收和SO2释放.
在4T1瘤携带的小鼠体内评估的抗癌疗效.

主要成果:

SO2-NPs成功合成并自组装成纳米粒子 (88.4 nm).
在瘤细胞中的高谷氨水平的反应中,SO2-NP释放了SO2,耗尽了谷氨并增加了氧化应激.
在体内观察到显著的瘤根除,证明了SO2-NP的治疗潜力.

结论:

开发的SO2聚合原药为癌症治疗提供了对SO2释放的精确控制.
SO2-NPs通过谷氨枯竭和氧化应激有效诱导癌细胞亡.
这种新的基于SO2的纳米粒子系统显示出有效根除瘤的巨大潜力.

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Preparation and Reactions of Thiols

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Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.

Preparation and Reactions of Sulfides

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.