基于光敏剂的NIR-II纳米粒子使线粒体失灵,通过促进热冲击蛋白40来克服瘤的自卫能力
Panpan Li1, Jiaxin Zhang1, Tao Shao1
1State Key Laboratory of Flexible Electronics (LoFE) & Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.
ACS nano
|April 17, 2025
概括
这项研究揭示了热冲击蛋白40 (HSP40) 如何克服瘤防御. 通过平衡热量和基,研究人员提高了光热疗法的疗效,提供了一种新的癌症治疗策略.
科学领域:
- 在瘤学瘤学.
- 生物化学 生物化学
- 纳米技术 纳米技术
背景情况:
- 恶性瘤具有与生俱来的自我防御机制,涉及热冲击蛋白 (HSP),降低光热疗法的有效性.
- 热冲击蛋白40 (HSP40) 通过抑制糖解和破坏线粒体功能来表现出抑制瘤的特性.
- 第一种类型的光动力学疗法产生反应性氧物种 (ROS),包括基,抑制腺三酸盐 (ATP) 生产,并在热应激下诱导HSP40过度表达.
研究的目的:
- 阐明在热应激期间将热和基与HSP40表达联系起来的调节机制.
- 探索针对HSP40作为治疗瘤发展的治疗策略的潜力.
- 通过克服瘤自卫机制,增强光热疗法的疗效.
主要方法:
- 战略性修改aza-BODIPY结构以控制激发状态能量分布.
- 基于光敏感剂的近红外II (NIR-II) 纳米粒子的开发.
- 研究热和基比例与HSP40表达之间的相关性.
- 评估瘤糖解,ATP生产和亡诱导.
主要成果:
- 发现HSP40特异性表达与热与基的比率相关,而不是它们的个体水平.
- NIR-II光敏化纳米粒子有效降低了瘤糖解,并破坏了ATP的产生.
- 开发的纳米粒子诱导了癌细胞的亡,显著放大了光热疗法的疗效.
- 在热和ROS应激组合下沉默和补偿HSP在克服瘤自卫方面被证明是有效的.
结论:
- 热与基的比率是诱导HSP40表达的关键因素.
- 通过编排的NIR-II光敏化纳米粒子准HSP40,为增强光热疗法提供了一个有前途的策略.
- 通过操纵HSP来克服瘤自卫机制,为有效的癌症治疗提供了一种可行的方法.
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