自组装的Fe-酸网络与ferroptosis协同作用,以增强瘤纳米治疗
Yinyin Chen1, Xiujuan Yang1, Haoran Li1
1College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Small (Weinheim an der Bergstrasse, Germany)
|April 30, 2024
概括
这项研究引入了Fe-RA,一种新型纳米复合物,通过产生基激素和促进瘤微环境中的铁调节细胞死亡 (铁亡) 来对抗瘤耐药性.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 像罗斯马林酸 (RA) 这样的天然多显示出抗瘤潜力.
- 瘤微环境 (低pH,高谷氨) 降低了RA的疗效.
- 准非亡细胞死亡途径是一种有前途的癌症治疗策略.
研究的目的:
- 开发一种自组装的Fe-RA纳米复合材料,以克服瘤中的RA抗性.
- 为了利用瘤微环境增强抗瘤活性.
- 通过铁过载和氧化应激诱导铁.
主要方法:
- Fe-RA纳米复合材料的合成和表征.
- 对POD类酶活性和谷氨耗尽的评估.
- 评估Fe2+运输和细胞内铁的积累.
- 同步射线X射线吸收光谱 (XAS) 和高分辨率质谱 (HRMS) 用于复杂化确认.
- 密度函数理论 (DFT) 用于机械学研究.
主要成果:
- Fe-RA纳米复合物显示出POD类型的酶活性,耗尽GSH并产生基基 (·OH).
- Fe-RA促进了Fe2+运输到瘤细胞中,增加了细胞内铁并促进了铁亡.
- XAS,HRMS和DFT证实了成功的复合并阐明了催化机制.
结论:
- Fe-RA纳米复合物有效地准瘤微环境,以提高抗瘤功效.
- Fe-RA通过氧化应激和铁亡的组合诱导癌细胞死亡.
- 这一策略提供了一种有希望的方法来克服瘤对单剂疗法的耐药性.
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