通过级联增强免疫反应,用于癌症治疗的压电触发铁灭
Huijuan Zheng1, Huimin Lin1, Yun Ke2
1State Key Laboratory of Eye Health, Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.
Advanced healthcare materials
|May 3, 2025
概括
这项研究介绍了BTO@Fe,这是一种新型材料,可触发铁亡并增强癌症免疫疗法. 超声波激活增强了它的有效性,通过刺激免疫反应,导致显著的抗瘤效应.
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
- 免疫学 免疫学 免疫学
背景情况:
- 铁亡是一种编程细胞死亡形式,由于其释放损伤相关分子模式 (DAMP) 和激活免疫反应的能力,在癌症治疗中显示出前景.
- 铁亡的免疫性和可控制地激活自我增强的抗瘤免疫力的方法需要进一步的研究.
研究的目的:
- 合成一个压电材料,BTO@Fe,用于ferroptosis诱导和癌症免疫治疗.
- 研究超声波 (US) 照射和BTO@Fe对铁亡和抗瘤免疫反应的联合作用.
主要方法:
- 一种基于BaTiO3的压电铁灭诱导剂 (BTO@Fe) 的合成.
- 通过铁和芬顿反应催化剂诱导铁,通过超声波诱导的焦催化剂增强.
- 评估活性氧物种 (ROS) 生成,谷氨 (GSH) 消耗和免疫细胞死亡 (ICD).
- 评估CD8+ T细胞激活,干扰素 (IFNγ) 释放以及体外/体内抗瘤功效.
主要成果:
- BTO@Fe有效诱导中度铁亡,通过超声波放大.
- 超声波激活的BTO@Fe增强ROS生成和GSH消耗,导致铁亡和ICD的加剧.
- 治疗刺激了CD8+ T细胞的反应和IFNγ的释放,使瘤细胞对ferroptosis敏感.
- 观察到显著的体外和体外抗瘤效应.
结论:
- 具有增强催化活性的工程压电材料可以恢复ferroptotic细胞中的免疫性.
- 与超声波相结合的BTO@Fe通过利用铁和免疫激活来为癌症免疫治疗提供了一个有希望的策略.
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