激光可激活的氧气自给纳米平台,通过增强铁和减轻缺氧微环境,有效克服结直肠癌耐药性
Hao Jiang1, Hailong Tian2, Zhihan Wang2
1The First Hospital of Ningbo University, Ningbo, 315020, China.
Biomaterials research
|September 23, 2023
概括
这项研究引入了一种新型纳米平台,可以增强铁和氧气供应,以对抗抗化疗耐药结直肠癌 (CRC). 这种方法有效地针对低氧瘤微环境,提供了针对CRC化疗耐药性的有希望的策略.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症研究 癌症研究
背景情况:
- 结肠直肠癌 (CRC) 是全球癌症死亡的主要原因.
- 化学耐药性在CRC治疗中是一个重大挑战.
- 氧化还原稳定,铁和瘤缺氧是克服化疗耐药性的关键因素.
研究的目的:
- 设计一个可光激活,提供氧气的纳米平台,用于增强铁灭.
- 在结直肠癌中克服化疗耐药性.
- 为了调节低氧瘤微环境.
主要方法:
- 联合组装的西斯 (CDDP) 和酸 (LA) 量身定制的IR820成为一个纳米平台.
- 利用激光触发的光热效应释放氧气和减轻缺氧.
- 通过外源性不和脂肪酸和氧化应激诱导的铁亡.
主要成果:
- 该纳米平台在耐化疗CRC细胞系中显示出显著的抗瘤疗效.
- 在裸体小鼠异种移植模型中观察到有效抑制瘤生长.
- 证实了增强的铁亡和缓解瘤缺氧.
结论:
- 开发的纳米平台提供了一种针对结直肠癌化疗耐药性的新策略.
- 增强的铁和瘤微环境的调制对于治疗成功至关重要.
- 这种方法为治疗抗化疗CRC提供了一个有前途的范式.
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