对胃癌中的与BMI相关的内微生物群的Multiomics见解
Kang Liu1, Zhengchen Jiang2,3, Yubo Ma1
1The Second Clinical Medical College of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
Frontiers in cellular and infection microbiology
|March 5, 2025
概括
低体重指数 (BMI) 是胃癌预后不佳的危险因素,可能阻碍化疗. 内细菌,特别是Abiotrophia,在低BMI患者中存在差异,影响免疫细胞和纯素代谢.
科学领域:
- 在瘤学瘤学.
- 微生物组研究 微生物组研究
- 代谢学 代谢学 代谢学
背景情况:
- 体重指数 (BMI) 是已知的癌症预后因素,但其对胃癌 (GC) 的具体影响和内微生物群的作用仍然不清楚.
- 以前的研究还没有完全探索BMI,内微生物组成和GC预后之间的关系.
研究的目的:
- 调查胃癌患者的变化BMI水平和内微生物群之间的关联.
- 确定与低BMI (LBMI) 胃癌患者预后相关的特定微生物特征.
- 探索这些微生物差异对免疫细胞透和代谢途径的功能影响.
主要方法:
- 对5567名GC患者的临床病理特征和预后进行了回顾性分析.
- 从189名GC患者的瘤组织的16SrRNA测序来分析瘤内微生物群.
- 在选定的样本上进行转录组和非向代谢组分析,以评估基因表达和代谢物概况.
主要成果:
- 低BMI (LBMI) 与较差的临床特征有关,并作为不利的GC预后的独立风险因素,可能会损害化疗疗效.
- 虽然整体微生物多样性没有显著差异,但在LBMI和非低BMI (NLBMI) 组之间发现了32种差异性内细菌.
- 在LBMI患者中,Abiotrophia属被丰富,与乙酸细胞和某些基因相反相关,并与LGR6正相关. 此外,LBMI与增加的纯素代谢物,如关氨酸和酸二氨酸相相关.
结论:
- 在GC中,LBMI是独立的负预后因素,可能会抑制术后辅助化疗.
- 具有不同的BMI的GC患者中独特的内微生物组成与不同的免疫细胞透和代谢概况有关.
- 亚比奥特罗菲亚属可能通过乙氨基基细胞调节和纯素代谢驱动GC进展,为精确GC治疗提供潜在的点.
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