主要瘤微生物组预测结直肠癌的远程转移
Bishal Parajuli1, Vishal Midya2, Ryan Kiddle1,3
1Holden Comprehensive Cancer Center and the Department of Pathology, University of Iowa, Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA, USA.
NPJ precision oncology
|November 25, 2025
概括
主要瘤微生物组组成可以预测结直肠癌 (CRC) 转移风险. 像B. fragilis和E. coli这样的特定细菌与CRC患者短暂的无转移生存 (MFS) 有关.
科学领域:
- 在瘤学瘤学.
- 微生物组研究 微生物组研究
- 基因组学就是基因组学.
背景情况:
- 转移是结直肠癌 (CRC) 中的主要死亡原因.
- 瘤微生物组可能具有CRC的预后价值.
- 预测远程转移对于患者的治疗结果至关重要.
研究的目的:
- 调查原发性瘤微生物组是否可以预测结直肠癌中远程转移.
- 识别与转移风险和存活相关的特定微生物特征.
主要方法:
- 使用RNA测序对900种结直肠癌 (CRC) 瘤微生物组进行了回顾性分析.
- 在一个独立的队列中使用16S rDNA测序和病原生物特异性qPCR进行验证.
- 微生物群多样性分析 (α和β) 和微生物共发生分析.
主要成果:
- 微生物组α多样性在初级瘤中较高,与转移风险相关.
- 贝塔多样性区分了原发性瘤与转移,并预测了5年无转移生存期 (MFS).
- 在初级瘤中,高B. fragilis和低F. nucleatum与较短的MFS有关;肠杆菌 (例如大肠杆菌) 在转移中得到丰富. 一个3个物种的微生物群预测了转移 (OR 1.9).
结论:
- 主要瘤微生物组作为结直肠癌转移风险的精确标记.
- 特定的病原生物,包括肠毒性B. fragilis和pks+大肠杆菌,与转移有关.
- 微生物组分析为预测CRC转移和指导治疗提供了一种新的方法.
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