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微生物群景观与对高级固体瘤免疫检查点抑制剂的反应的关联:一个SCRUM-Japan MONSTAR-SCREEN研究
Kentaro Sawada1, Riu Yamashita2, Shunsuke A Sakai3
1Kushiro Rosai Hospital, Japan.
Cancer research communications
|May 9, 2025
概括
肠道中高口腔细菌与免疫检查点抑制剂 (ICI) 疗效降低相关,特别是在使用质子抑制剂 (PPI) 的患者中. 肠道微生物组分析显示,口腔细菌的丰富程度会影响癌症治疗的结果.
科学领域:
- 在瘤学瘤学.
- 微生物组研究 微生物组研究
- 免疫治疗是一种免疫疗法.
背景情况:
- 人们越来越认识到肠道微生物组在癌症发展和免疫检查点抑制剂 (ICI) 疗效方面的作用.
- 然而,关于微生物群景观变异及其对不同癌症类型的ICI疗效的影响的综合数据仍然有限.
研究的目的:
- 研究肠道微生物组组成,临床特征和ICI疗效在患有高级固体瘤的大群患者之间的关联.
- 为了确定肠道微生物群的多样性或特定的细菌丰度是否预测ICI治疗结果.
主要方法:
- 分析了来自SCRUM-Japan MONSTAR-SCREEN项目的2180名患有晚期固体瘤的患者的肠道微生物组数据.
- 微生物组资料与临床特征和ICI疗效的相关性,包括无进展生存期 (PFS).
- 亚组分析侧重于使用质子抑制剂 (PPI) 的患者.
主要成果:
- 在使用PPI和患上上部胃肠道癌症的患者中观察到口腔细菌的高患病率.
- 整体肠道微生物群多样性并不能显著预测跨癌症类型的ICI疗效 (HR=0.94).
- 便中的口腔细菌增加与更短的PFS相关 (中位数为4.34个月与6.97个月) 并降低了ICI疗效,特别是在PPI使用者中 (中位数PFS为3.15个月与2.04个月).
结论:
- 肠道微生物组的组成,特别是口腔细菌的丰富性,显著影响ICI的疗效.
- 在肠道中存在口腔细菌可能会降低治疗的有效性,特别是在使用PPI的患者中.
- 这些发现强调了微生物组分析对优化癌症免疫治疗的临床相关性.
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