通过向CA9以向CA9以消除癌症干细胞并克服免疫抑制来调节瘤酸度
Qingyuan Deng1, Ao Hua1, Qingfu Zhao1
1Department of Nanomedicine and Biopharmaceuticals, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China.
这项研究引入了新的纳米粒子,通过抑制碳酸酶IX (CA9) 来向癌症干细胞 (CSC). 这种方法结合化疗和化学动力学疗法来降低瘤酸度并激活抗瘤免疫力.
科学领域:
- 在瘤学瘤学.
- 纳米技术纳米技术
- 免疫学 免疫学 免疫学
背景情况:
- 固体瘤表现出酸性微环境,由华堡效应驱动,促进瘤进展和治疗耐药性.
- 癌症干细胞 (CSCs) 通过过度表达碳酸酶IX (CA9),这是一种关键的pH调节剂,与免疫抑制和干性有关,从而导致瘤酸度.
研究的目的:
- 设计和评估新的纳米粒子 (CHHD-Cu NP) 以准和消除CA9表达的CSC.
- 在这些纳米颗粒中,将多克索鲁比 (DOX) 介导的化疗与铜离子 (Cu2+) 介导的化学动力学疗法结合起来.
- 通过直接细胞毒性和免疫系统激活来研究CSC消除的双重机制.
主要方法:
- 开发基于基乙醇粉的纳米颗粒与CA9抑制剂 (CAi) 结合并装载DOX和Cu2+.
- 在体外和体内评估纳米粒子与CA9结合,pH调节和CSC消除.
- 评估增强药物释放,减少瘤酸度和改善抗瘤免疫反应.
主要成果:
- CHHD-CuNP有效地与CA9结合,破坏pH调节并改变细胞内和细胞外pH水平.
- 度调节促进了DOX和Cu2+的增强细胞内释放,导致对CSCs的强有力的细胞毒性.
- 减少细胞外酸性促进了T细胞透和活动,增强了抗瘤免疫力.
结论:
- 合理设计的CHHD-CuNP提供了通过直接细胞毒性和免疫激活来消除CSC的双重治疗策略.
- 这种方法通过向酸性瘤微环境和CSCs,为治疗免疫抑制固体瘤提供了一个有希望的新方法.
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