强大的 (II) 基免疫细胞死亡诱导因子,由ROS介导的ERS和线粒体Ca2+过载触发
Lan-Shan Liao1,2, Yin Chen1, Cheng Hou1
1State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
Journal of medicinal chemistry
|July 27, 2023
概括
两种基于的复合物,Zn1和Zn2,通过触发内质网膜应激和线粒体功能障碍,有效诱导免疫细胞死亡 (ICD). 这些复合物抑制瘤生长,改善小鼠的生存率,为癌症治疗提供了一种新的策略.
科学领域:
- 生物化学 生化学
- 免疫学 免疫学 免疫学
- 材料科学 材料科学 材料科学
背景情况:
- 基于的复合物正在探索用于癌症治疗.
- 免疫性细胞死亡 (ICD) 是增强抗瘤免疫力的有希望的策略.
- 细胞内膜网膜应激 (ERS) 和线粒体功能障碍是诱导细胞死亡的关键途径.
研究的目的:
- 研究Zn1和Zn2作为基于的免疫细胞死亡 (ICD) 诱导剂的潜力.
- 阐明Zn1和Zn2激活ICD的潜在机制,重点关注Ca2+介导的ERS和线粒体功能障碍.
- 在小鼠模型中评估Zn1和Zn2的体内抗瘤疗效和生存益处.
主要方法:
- 用Zn1和Zn2处理T-24细胞.
- 评估反应性氧化物种 (ROS) 生产,ERS,以及线粒体Ca2+过载.
- 对损伤相关分子模式 (DAMPs) 释放 (CRT,HMGB1,ATP) 的分析.
- 在体内疫苗接种试验评估瘤抑制和存活率.
- 免疫细胞群 (CD8+ T细胞,Foxp3+细胞) 的流细胞计分析.
主要成果:
- 与Zn1相比,Zn2诱导了较早的ROS过度生产和随后的ERS,而Zn1则诱导了较早的ROS过度生产和随后的ERS.
- Zn1和Zn2都促进了Ca2+从ER释放到细胞质和线粒体,导致线粒体功能障碍.
- 在用 Zn1 和 Zn2.2 处理的细胞中观察到 DAMP (CRT,HMGB1,ATP) 的释放.
- 与1和2接种疫苗抑制了远程瘤生长,并改善了与氧沙相比,小鼠的生存率.
- 在接种疫苗的小鼠中观察到CD8+细胞毒性T细胞的增加和Foxp3+细胞的减少.
结论:
- Zn1和Zn2是有效的基于的ICD诱导剂.
- 该机制涉及ROS诱导的ERS,Ca2+过载和线粒体功能障碍.
- 在体内,Zn1和Zn2表现出显著的抗瘤疗效和免疫调节作用.
- 这些发现表明基于的ICD诱导剂用于癌症治疗的新设计策略.
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