血红蛋白纳米催化剂具有可调节的自氧化活性,用于瘤亡-费洛亡联合疗法
Acta pharmaceutica Sinica. B
|January 1, 2026
概括
这项研究介绍了一种基于血红蛋白的新型纳米催化剂 (Hb@PtPP) 用于瘤催化疗法. 它通过反应性氧物种和铁亡,有效地触发瘤细胞死亡,由光热效应增强.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 催化剂是一种催化剂.
背景情况:
- 催化疗法的临床转化受到免疫学风险和金属催化剂代谢不良的限制.
- 非金属活性中心为开发更安全,更有效的催化剂提供了一个有希望的替代方案.
- 血红蛋白 (Hb) 作为先进的催化应用中的天然成分具有潜力.
研究的目的:
- 开发一种使用血红蛋白进行增强瘤催化疗法的新型非金属纳米催化剂.
- 研究基于Hb的纳米催化剂 (Hb@PtPP) 在向瘤细胞中的有效性.
- 探索Hb@PtPP诱导的瘤细胞死亡的潜在机制,包括铁亡.
主要方法:
- 合成Hb@PtPP纳米催化剂通过与血红蛋白的醇聚合.
- 在瘤细胞和正常细胞中对Hb@PtPP和BSA@PtPP进行比较分析.
- 评估反应性氧物种 (ROS) 生产,/铁离子释放和脂质过氧化.
- 用RNA测序来确认瘤细胞中的铁灭诱导.
- 在体外和体内评估通过光热增强抑制瘤生长.
主要成果:
- 由于过氧化水平升高,Hb@PtPP在瘤细胞中表现出选择性自氧化.
- 在瘤细胞中,Hb@PtPP启动了一连串导致亡和铁亡的反应.
- RNA测序证实了铁亡作为瘤细胞死亡的关键机制.
- 联合催化和光热效应导致显著的体外和体内瘤抑制.
- 与BSA@PtPP.相比,Hb@PtPP显示出更高的疗效.
结论:
- 血红蛋白是开发瘤治疗中先进纳米催化剂的关键组成部分.
- Hb@PtPP为癌症治疗提供了一个有前途的非金属催化方法.
- 涉及ROS生成和ferroptosis诱导的双作用机制提供了有效的瘤杀伤.
- 光热增强进一步提高了Hb@PtPP的治疗疗效.
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