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金属有机框架介导的siRNA传递和声动疗法用于精确触发铁和增强骨髓瘤中ICD
Ningxiang Sun1, Qingjian Lei1, Meng Wu2
1Department of Spine Surgery and Musculoskeletal Tumor, Zhongnan Hospital of Wuhan University, 168 Donghu Street, Wuchang District, Wuhan, Hubei, 430071, China.
Materials today. Bio
|April 24, 2024
概括
这项研究引入了一种用于骨髓瘤治疗的新型纳米系统,它结合了RNA干扰和声动疗法来诱导铁亡. 这种方法增强了抗瘤效果,克服了化疗耐药性.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 在瘤学瘤学.
背景情况:
- 骨髓瘤 (OS) 由于复杂的基因组学,免疫抑制性瘤微环境 (TME) 和耐药性而存在挑战.
- 作为受调节的细胞死亡途径,铁亡与瘤进展有关,主要由谷氨过氧化酶4 (GPX4) 控制.
- 为基因沉默提供小干扰RNA (siRNA) 的有效输送仍然是癌症治疗中的一个重大障碍.
研究的目的:
- 开发一种基于TME的金属有机框架 (MOF) 的仿生纳米系统 (mFeP@si),用于针对性地诱导OS中的铁亡.
- 将siRNA传递 (siGPX4) 与声动疗 (SDT) 整合起来,以获得协同抗瘤效应.
- 研究这种纳米系统在克服化疗耐药性和调节瘤微环境方面的潜力.
主要方法:
- 为siGPX4提供一个对TME敏感的基于MOF的仿生纳米系统 (mFeP@si) 的制造.
- 使用超声波 (US) 辐射触发溶酶体逃逸和反应性氧物种 (ROS) 生成.
- 使用siGPX4来沉默GPX4的表达,导致铁死诱导.
- 评估协同治疗效应,TME调制和化疗敏感性在体外和体内.
主要成果:
- 该mFeP@si系统有效地输送了siGPX4,并在US辐射后诱导了溶酶体逃逸并放大了ROS生成.
- 通过siGPX4沉默GPX4,导致脂氧化的积累,并触发铁亡.
- 协同疗法显示出显著的抗瘤疗效,增强免疫细胞死亡 (ICD),并改善了对抗性OS细胞中西斯的敏感性.
- 该纳米系统在体外和体内都显示出强烈的抗瘤作用.
结论:
- 这种新型纳米系统通过整合RNA干扰和骨髓瘤治疗的声动疗法有效地向铁.
- 这种方法提供了一个有前途的策略,以克服骨髓瘤的治疗局限性,包括耐药性和免疫抑制TME.
- 开发的仿生纳米系统为开发先进的癌症疗法提供了新的见解.
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