含空位丰富的木基纳米片用于通过CO中毒,Ca2+dyshomeostasis和氧化损伤来破坏线粒体
Yinmin Zhao1, Xiaoqin Wang1, Mengting He1
1School of Materials and Energy, Southwest University, Chongqing, 400715, China.
Small (Weinheim an der Bergstrasse, Germany)
|December 6, 2023
概括
一种基于石的新型纳米剂 (BCP) 有效向癌细胞线粒体. 这种药物诱导细胞死亡并触发抗瘤免疫力,为癌症治疗提供了一个有前途的新策略.
科学领域:
- 纳米技术纳米技术
- 生物医学工程 生物医学工程
- 在瘤学瘤学.
背景情况:
- 线粒体在癌细胞生存中起着至关重要的作用,是关键的治疗点.
- 现有的线粒体向药物需要进一步开发以提高有效性和多功能性.
研究的目的:
- 开发一种新的多功能纳米剂,全面攻击癌细胞中的线粒体功能.
- 为了研究氧空位丰富的氧氧化物纳米薄膜涂层碳酸 (BiO2-x@CaCO3/PEG,BCP) 对恶性瘤的治疗潜力.
主要方法:
- 生物O2-x@CaCO3/PEG (BCP) 纳米剂的合成和表征.
- 研究BCP的细胞内行为,包括CaCO3外分解,Ca2+和CO2释放以及近红外辐射下的CO生成.
- 在瘤微环境中评估BCP的催化活性 (催化酶,过氧化酶,类似氧化酶).
- 评估BCP诱导的线粒体功能障碍,细胞死亡 (细胞亡,免疫细胞死亡) 和抗瘤免疫反应.
主要成果:
- 瘤细胞成功合成了BCP纳米剂,并证明了瘤细胞的有效内细胞分裂.
- CaCO3外分解释放出Ca2+和CO2,近红外辐射通过光催化促进了CO生成.
- BiO2-x纳米片表现出多种类似酶的活动,导致ROS积累和缺氧缓解.
- Ca2+过载,CO中毒,ROS压力和过氧的综合作用导致严重的线粒体损伤和I型细胞死亡.
- BCP触发了细胞亡和免疫细胞死亡,激活了抗瘤免疫力并抑制了转移.
结论:
- 开发的BCP纳米剂提供了一个多功能平台,通过各种机制攻击癌细胞线粒体.
- BCP诱导了显著的瘤细胞死亡,同时激活了抗瘤免疫力,证明了有效的癌症治疗的潜力.
- 这种基于石的纳米剂平台显示出在恶性瘤治疗中扩大医疗应用的前景.
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