来自未培养的肠道细菌类TANB77的保存皮林增强了癌症免疫疗法
Chan Yeong Kim1,2,3, Dong Jin Park2,4, Beung Chul Ahn5,6
1Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea.
Nature communications
|December 27, 2024
概括
研究人员确定了TANB77,一种新型细菌类,作为预测免疫检查点阻塞 (ICB) 治疗反应的一致生物标志物. 在临床前模型中,TANB77及其蛋白质增强了抗PD-1治疗的疗效.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
背景情况:
- 免疫检查点封锁 (ICB) 是一种至关重要的癌症治疗方法,但有限的反应率凸显了对预测生物标志物的需求.
- 肠道微生物组在ICB疗效中的作用是显著的,但一致的微生物组生物标志物仍然难以捉摸.
- 现有的分类学方法忽略了像TANB77.7这样的特定细菌类.
研究的目的:
- 为了确定一致的肠道微生物组生物标志物来预测ICB治疗反应.
- 调查已识别的细菌类 (TANB77) 在调节ICB疗效中的功能作用.
- 探索TANB77衍生成分在增强抗癌免疫疗法的潜力.
主要方法:
- 对ICB治疗癌症患者的十个独立队列进行元分析,以确定响应丰富的种群.
- 使用小鼠模型进行体内研究,以评估TANB77丰度对抗PD-1治疗反应的影响.
- 在接受抗PD-1治疗的小鼠中使用TANB77-衍生的像pilin的蛋白质进行实验验证.
主要成果:
- TANB77是一种以前未经表征的细菌类,在多个ICB队列的响应者中被持续丰富.
- 在小鼠模型中,增加TANB77的肠道丰度与改善对抗PD-1治疗的反应相关.
- 服用TANB77衍生的像pilin的蛋白质增强了体内抗PD-1疗法的疗效.
结论:
- TANB77代表了一种用于ICB治疗的新且一致的肠道微生物组生物标志物.
- TANB77及其类似皮林蛋白具有改善抗PD-1治疗结果的潜力.
- 向TANB77或其成分可能提供一种提高癌症免疫治疗疗效的策略.
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