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一种轻度高温空心碳纳米酶作为激素灭绝诱导剂,增强抗瘤免疫力

Na Tao¹, Lei Jiao², Huihuang Li³

¹Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China.

|November 9, 2023

概括

这项研究引入了一种新型的空心碳纳米酶,可以增强 pyroptosis (编程细胞死亡),以促进抗癌免疫疗法. 这种方法有效地将不响应的瘤转化为易受治疗的瘤.

科学领域:

生物医学工程生物医学工程
癌症研究癌症研究
免疫治疗是一种免疫疗法.

背景情况:

免疫检查点阻塞 (ICB) 免疫疗法显示出希望,但受到瘤微环境和低免疫性限制.
作为一种被编程的细胞死亡,热可以释放瘤抗原并提高免疫疗法的疗效,但高效的诱导仍然是一个挑战.
开发克服瘤免疫抑制的策略对于改善癌症治疗结果至关重要.

研究的目的:

开发一种基于纳米酶的新策略,以增强 pyroptosis 以改善抗癌免疫疗法.
研究由空心碳纳米酶 (HCS-FeCu) 介导的轻度高温增强型热的机制.
评估激素灭亡诱导和ICB (抗PD-1) 治疗在将"冷"瘤转化为"热"瘤中的协同效应.

主要方法:

用铁和铜原子 (HCS-FeCu) 修改的工程空心碳球具有酶模仿活动.
利用光激活通过激进氧物种 (ROS) -Tom20-Bax-Caspase 3-gasdermin E (GSDME) 途径诱导热.
研究了轻度光热刺激对ROS产生和纳米酶-瘤微环境相互作用的影响.
在体外和体内均评估了抗瘤效应,并将HCS-FeCu治疗与抗PD-1免疫疗法结合起来.

主要成果:

在光激活下,HCS-FeCu纳米酶通过ROS生成和特定的信号通路有效诱导热.
轻度的光热刺激增强了ROS的产生和纳米酶的活性,放大了灭酶介导的抗癌反应.
HCS-FeCu诱导的热和抗PD-1免疫疗法的组合显示出优异的抗瘤疗效.
证明了将免疫学上"冷"的瘤转化为"热"的瘤的能力,增强免疫疗法反应.

结论:

通过HCS-FeCu纳米酶调解的轻度高温增强型热是一个有前途的癌症治疗策略.
这种方法有效地克服了瘤免疫抑制,并提高了免疫检查点阻塞疗法的疗效.
该研究提出了一种可行的方法,用于将不响应的瘤转化为免疫活性瘤,这对免疫疗法有重大临床影响.

关键词:

抗瘤免疫力免疫力有空洞结构的结构.轻微的高温症或过热症纳米酶是一种纳米酶.热致灭症是什么?

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