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铜基金属有机框架纳米平台用于miRNA输送:协同抗瘤疗法

Maopu Tu¹, Xiaoyu Deng², Bin Lai¹

¹Department of Gastrointestinal Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China.

International journal of nanomedicine

|July 8, 2025

概括

这项研究引入了一种新型纳米系统 (miR-4521@MOF-199) 通过克服瘤抗氧化防御来增强化学动力学治疗 (CDT). 该系统有效地提供治疗剂,从而产生强大的抗瘤效果,具有低毒性.

科学领域:

生物医学工程生物医学工程
纳米技术纳米技术
癌症治疗癌症治疗

背景情况:

化学动力学疗法 (CDT) 产生反应性氧物种 (ROS) 来诱导抗瘤效应的氧化应激.
瘤细胞具有抗氧化机制,可显著降低CDT的疗效.
需要新的策略来提高CDT对抗癌症的有效性.

研究的目的:

开发一种对瘤微环境有反应性的纳米系统,用于增强癌症治疗.
研究化学动力学疗法,基因疗法和cuproptosis的协同效应.
评估新型纳米系统的抗瘤疗效和生物安全性.

主要方法:

用miR-4521 (miR-4521@MOF-199) 装载的MOF-199纳米粒子 (NP) 的制造.
使用聚烯胺凝电泳的NP负载能力和保护功能的评估.
在体外和体内实验,以评估抗瘤作用,生物安全性和潜在机制.

主要成果:

miR-4521@MOF-199 NPs有效地保护并将miR-4521传递给瘤细胞.
在高谷氨瘤微环境中的NP降解释放Cu2+和miR-4521,通过ROS介导的CDT和cuproptosis诱导亡.
miR-4521抑制了FOXM1的表达,破坏了瘤细胞的氧化应激防御,并提高了CDT的疗效.

结论:

多功能miR-4521@MOF-199纳米系统显示出强大的抗瘤功效和高生物相容性.
这种方法为基于CDT的多式组合性癌症治疗提供了一个有希望的方向.
该纳米系统协同结合了CDT,基因疗法和cuproptosis,用于增强癌症治疗.

关键词:

化学动力学疗法是一种化学动力学疗法.这就是cuproptosis.基因治疗的基因疗法金属有机框架的框架.这是一个微型RNA.纳米颗粒是一种纳米粒子.

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相关概念视频

MicroRNAs

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...