在肝细胞癌治疗中,低氧敏感磁体的有希望的平台
Kun Deng1, Jiaojiao Wang1, Xia Zhou2
1State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, China Agricultural University, Beijing, 100193, China.
Scientific reports
|July 11, 2025
概括
工程化低氧反应的纳米粒子 (NI-HA-BMs-DOX) 显示了多克索鲁比辛 (DOX) 向肝癌细胞的向输送. 这种新的药物递送系统有效地抑制瘤生长并增强亡,提供了一个有前途的癌症治疗策略.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 在瘤学瘤学.
背景情况:
- 缺氧是固体瘤的标志,有助于治疗耐药性.
- 有针对性的药物输送系统对于提高癌症治疗效率和减少副作用至关重要.
- 细菌磁体组为生物医学应用提供独特的特性,包括药物输送.
研究的目的:
- 为了设计低氧反应的纳米粒子 (NI-HA-BMs-DOX) 针对肝细胞癌 (HCC) 的向性多克索鲁比 (DOX) 输送.
- 评估NI-HA-BMs-DOX在低氧瘤微环境中的体外和体内疗效.
- 研究细菌磁体体在增强癌症药物输送策略方面的潜力.
主要方法:
- 纳米颗粒的制造 (NI-HA-BMs-DOX) 包含2-胺醇,氨酸,细菌磁体和多克索鲁比.
- 在低氧条件下使用HepG2 (HCC) 和HL-7702 (正常肝细胞) 细胞进行体外细胞分析.
- 评估DOX释放动力学,细胞吸收,细胞毒性和与亡相关的蛋白质表达 (caspase-3,caspase-8,Tp53).
- 在瘤载体模型中的体内研究,以评估与自由DOX和非响应纳米粒子相比的瘤抑制率和治疗疗效.
主要成果:
- NI-HA-BMs-DOX证明了低氧触发的DOX的受控释放.
- 选择性DOX输送和增强的细胞毒性在低氧状态下的HepG2细胞中观察到,对正常肝细胞的影响最小.
- 卡斯巴酶-3,卡斯巴酶-8和TP53的上调证实了瘤亡和细胞毒性的增强.
- 在体内研究显示,NI-HA-BMs-DOX的显著瘤抑制率为55.38%,优于自由DOX (34.90%) 和HA-BMs-DOX (43.88%).
结论:
- NI-HA-BMs-DOX代表了一个有前途的低氧向治疗平台,用于HCC.
- 工程纳米颗粒有效地将DOX传递给瘤细胞,提高治疗结果.
- 细菌磁体组显示出改善癌症治疗中药物输送策略的潜力.
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