鲁II光活性剂用于向ER压力和免疫细胞死亡
bioRxiv : the preprint server for biology
|August 2, 2024
概括
这项研究表明, (II) 复合物 (2) 能够有效触发癌细胞死亡,并刺激小鼠的抗瘤免疫力. 它通过诱导免疫记忆和巨细胞激活,作为一种现场瘤疫苗具有前景.
科学领域:
- 免疫学 免疫学 免疫学
- 光动力学疗法 光动力学疗法
- 材料科学 材料科学 材料科学
背景情况:
- 免疫疗法可以增强免疫系统的抗癌能力.
- 光动力疗法 (PDT) 显示出增强抗瘤免疫力的潜力,但机制尚不清楚.
- 绿光激活的PDT药物正在研究用于癌症治疗.
研究的目的:
- 调查两种绿光激活的PDT药物,以检测它们诱导抗瘤免疫的能力.
- 确定这些药物,特别是化合物2影响癌细胞和免疫系统的机制.
- 评估化合物2作为局部瘤疫苗的潜力.
主要方法:
- 利用2D癌细胞培养和3D共培养与巨细胞和乳腺癌细胞.
- 采用流细胞测量和蛋白质分析来评估内细胞网膜 (ER) 应激和免疫细胞死亡 (ICD) 标志物.
- 在BALB/c小鼠中使用小鼠乳腺癌模型 (4T1) 进行了体内研究.
主要成果:
- 与其连接物相比,化合物2在癌细胞中诱导了显著的ER压力和ICD指标.
- 在体内研究表明,化合物2产生了抗瘤免疫,在2/8小鼠中完全消除了瘤.
- 接受治疗的小鼠表现出对瘤复发的保护,并发展出抗原特异性T细胞召回,表明免疫记忆.
- 在用化合物2治疗的小鼠的瘤中观察到M1巨细胞两极化.
结论:
- (II) 复合对于ER向,触发ICD和抗瘤免疫是至关重要的.
- 化合物2显示出作为一种有效的局部瘤疫苗的潜力.
- 这些发现突显了Ru (II) 剂在癌症免疫疗法和免疫记忆诱导中的作用.
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