在免疫治疗相关的结肠炎中,基线结肠病原性和肠道微生物群的急性干扰
Joan Shang1,2, Diane Marie Del Valle3,4,5, Graham J Britton1,2
1Precision Immunology Institute, Icahn School of Medicine at Mount Sinai , New York, NY, USA.
免疫检查点抑制剂治疗可以引起大肠炎,受肠道细菌的影响. 患者的早期结肠炎显示出明显的微生物组变化,为监测和缓解策略提供了潜力.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 微生物组研究 微生物组研究
背景情况:
- 免疫检查点抑制剂 (ICI) 是癌症治疗中的关键药物.
- 与免疫相关的不良事件,如与免疫治疗相关的结肠炎 (irC),是常见的.
- 人们越来越认识到肠道微生物群在IRC发育中的作用.
研究的目的:
- 在接受ICI治疗的癌症患者中纵向分析肠道微生物组.
- 为了比较患有IRC和没有IRC的患者之间的肠道微生物组成.
- 使用临床前模型研究irC相关微生物群的结肠病原性.
主要方法:
- 在38名ICI治疗癌症患者的长度微生物组分析.
- 在irC (n=13) 和无irC (n=25) 队列之间的微生物组的比较.
- 将便微生物群移植到临床前小鼠模型中.
主要成果:
- 来自IRC受试者的疾病前期便在小鼠中显示出增加的结肠病原性.
- 早期的irC微生物群 (前10天) 呈现出减少的多样性,增加的蛋白质菌和菌,以及减少的菌.
- 在irC缓解之前微生物群的概况正常化,类似于活性irC期间的炎症性肠病微生物群.
- 在irC中的肠道微生物群在功能上是不同的,但在遗传学上与非irC和健康的微生物群相似,有过渡的早期破坏.
结论:
- 肠道微生物群在免疫治疗相关的大肠炎的发展和过程中发挥着重要作用.
- 在IRC早期的特定微生物转移是可以识别的和短暂的.
- 纵向微生物组分析对于在接受ICI治疗的患者中检测,监测和潜在地减轻irC至关重要.
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