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Zn(II)-Coordination-driven self-assembled nanoagents for multimodal imaging-guided photothermal/gene synergistic therapy
Chemical Science ( IF 7.6 ) Pub Date : 2022-06-02 , DOI: 10.1039/d2sc01769e
Hui Hu 1 , Nan Yang 2 , Jiahui Sun 1 , Fu Zhou 1 , Rui Gu 2 , Yuan Liu 1 , Li Wang 1 , Xuejiao Song 2 , Ruirui Yun 1 , Xiaochen Dong 2 , Guangfeng Wang 1
Affiliation  

Synergistic photothermal therapy (PTT) with gene therapy (GT) has drawn emerging interest in the improvement of cancer therapeutic efficiency, while the co-delivery of photothermal agents (PTAs) and therapeutic genes by an integrated nanoplatform, with controllability and biodegradability, is still challenging and urgently desired. Herein, a multi-functional metal–organic framework (MOF) based PTT–GT platform (siRNA@PT-ZIF-8) was developed, which was constructed with siRNA, a near-infrared (NIR) responsive organic dye IR780 derivative (IR780-1), and 2-methylimidazole (2-MIM) by a facile one-pot self-assembly method. This “all-in-one” system of siRNA@PT-ZIF-8 enabled not only photothermal/photoacoustic/fluorescence multimodal imaging but also tumor microenvironment responsiveness for specific and on-demand release of therapeutic cargos, overcoming the inherent limitations of free gene or organic PTA molecules (e.g., short blood circulation half-life and weak stability) in conventional PTT and GT. This nanoplatform provides an efficient and safe strategy for cancer theranostics, and the one-step assembly strategy favors personalized formulation design for diverse demands in cancer management.

中文翻译:


Zn(II)-配位驱动的自组装纳米药物用于多模态成像引导的光热/基因协同治疗



协同光热疗法(PTT)与基因疗法(GT)引起了人们对提高癌症治疗效率的兴趣,而通过具有可控性和生物降解性的集成纳米平台共同递送光热剂(PTA)和治疗基因仍然是一个研究领域。具有挑战性且迫切需要。在此,开发了一种基于多功能金属有机框架(MOF)的PTT-GT平台(siRNA@PT-ZIF-8),该平台由近红外(NIR)响应有机染料IR780衍生物(IR780 -1) 和 2-甲基咪唑 (2-MIM),通过简单的一锅自组装方法制备。这种“一体化”的 siRNA@PT-ZIF-8 系统不仅能够实现光热/光声/荧光多模态成像,还能够实现肿瘤微环境对治疗物质的特定和按需释放的响应,克服了游离基因的固有局限性或常规PTT和GT中的有机PTA分子(例如,血液循环半衰期短、稳定性弱)。该纳米平台为癌症治疗诊断提供了一种高效、安全的策略,一步组装策略有利于个性化配方设计,满足癌症管理的不同需求。
更新日期:2022-06-02
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