College of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030001, Shanxi Province, PR China.
College of Pharmacy, Shanxi Medical University, Taiyuan 030001, Shanxi Province, PR China.
Bioorg Chem. 2024 Sep;150:107593. doi: 10.1016/j.bioorg.2024.107593. Epub 2024 Jun 28.
Nitric oxide (NO) and reactive oxygen species (ROS) embody excellent potential in cancer therapy. However, as a small molecule, their targeted delivery and precise, controllable release are urgently needed to achieve accurate cancer therapy. In this paper, a novel US-responsive bifunctional molecule (SD) and hyaluronic acid-modified MnO nanocarrier was developed, and a US-responsive NO and ROS controlled released nanoplatform was constructed. US can trigger SD to release ROS and NO simultaneously at the tumor site. Thus, SD served as acoustic sensitizer for sonodynamic therapy and NO donor for gas therapy. In the tumor microenvironment, the MnO nanocarrier can effectively deplete the highly expressed GSH, and the released Mn can make HO to produce OH by Fenton-like reaction, which exhibited a strong chemodynamic effect. The high concentration of ROS and NO in cancer cell can induce cancer cell apoptosis ultimately. In addition, toxic ONOO, which was generated by the reaction of NO and ROS, can effectively cause mitochondrial dysfunction, which induced the apoptosis of tumor cells. The I was labeled on the nanoplatform, which exhibited internal radiation therapy for tumor therapy. In -vitro and -vivo experiments showed that the nanoplatform has enhanced biocompatibility, and efficient anti-tumor potential, and it achieves synergistic sonodynamic/NO/chemodynamic/radionuclide therapy for cancer.
一氧化氮(NO)和活性氧物种(ROS)在癌症治疗中具有巨大的潜力。然而,作为一种小分子,它们需要被靶向递送到肿瘤部位,并实现精确、可控的释放,才能达到准确的癌症治疗效果。在本文中,我们开发了一种新型的超声响应双功能分子(SD)和透明质酸修饰的 MnO 纳米载体,并构建了一种超声响应的 NO 和 ROS 可控释放的纳米平台。超声可以触发 SD 分子在肿瘤部位同时释放 ROS 和 NO。因此,SD 分子既可以作为声动力学治疗的声敏剂,也可以作为气体治疗的一氧化氮供体。在肿瘤微环境中,MnO 纳米载体可以有效地消耗高表达的 GSH,释放的 Mn 可以通过芬顿样反应使 HO 产生 OH,从而表现出强烈的化学动力学效应。癌细胞中高浓度的 ROS 和 NO 可以诱导癌细胞凋亡。此外,由 NO 和 ROS 反应生成的毒性过氧亚硝酸盐(ONOO-)可以有效地引起线粒体功能障碍,诱导肿瘤细胞凋亡。该纳米平台还被 I 放射性核素标记,可实现肿瘤的内部放射治疗。体外和体内实验表明,该纳米平台具有增强的生物相容性和高效的抗肿瘤潜力,实现了协同的声动力学/NO/化学动力学/放射性核素治疗癌症的效果。