肠道微生物组调节了黑色素瘤患者对抗PD-1 免疫疗法的反应
V Gopalakrishnan1,2, C N Spencer2,3, L Nezi3
1Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
概括
在黑色素瘤患者中,肠道微生物对抗编程细胞死亡1蛋白 (PD-1) 免疫疗法的反应产生影响. 受试者肠道微生物群多样性和细菌特异性较高,这表明与治疗疗效有联系.
科学领域:
- 癌症学
- 微生物组研究
- 免疫疗法
背景情况:
- 临床前模型表明肠道微生物在免疫治疗反应中的作用.
- 在接受治疗的人类癌症患者中存在有限的特征.
研究的目的:
- 在黑色素瘤患者中研究口腔和肠道微生物组合与抗PD-1免疫疗法的反应之间的关联.
- 确定与治疗结果相关的特定微生物或功能特征.
主要方法:
- 在接受抗PD-1治疗的112名黑色素瘤患者口腔和肠道微生物组的分析.
- 响应者与不响应者之间的微生物组多样性和组成的比较.
- 来自患者子组的便样本的基因组和免疫分析.
主要成果:
- 肠道微生物群的多样性和组成在响应者和不响应者之间有显著差异.
- 响应患者的阿尔法多样性和Ruminococcaceae家族的丰度较高.
- 肠道细菌的功能差异,包括代谢途径,以及响应者的免疫力.
结论:
- 肠道微生物组合与黑色素瘤抗PD-1免疫治疗的临床反应有关.
- 特定的微生物特征和功能可能预测或影响治疗的疗效.
- 这些发现支持微生物组调节的潜力,以提高癌症免疫疗法的结果.
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