Analysis of differences in intestinal flora associated with different BMI status in colorectal cancer patients

作者：Yongqi Huang, Xiaoliang Huang, Zhen Wang, Fuhai He, Zigui Huang, Chuanbin Chen, Binzhe Tang, Mingjian Qin, Yongzhi Wu, Chenyan Long, Weizhong Tang, Xianwei Mo, Jungang Liu · 发表于：Journal of Translational Medicine · 年份：2024 · DOI：10.1186/s12967-024-04903-7 · 被引用次数：13 · 研究领域：Gut microbiota and health、Cancer Research and Treatments、Probiotics and Fermented Foods

BACKGROUND: Overweight is known to be an important risk factor for colorectal cancer (CRC), and the differences in intestinal flora among CRC patients with different BMI status have not been clearly defined. The purpose of this study was to elucidate the differences in the abundance, composition and biological function of intestinal flora in CRC patients with different BMI status. METHOD: was defined as normal weight group. Preoperative stool collection of patients in both groups was used for 16S rRNA sequencing. Total RNA was extracted from 17 CRC tumor tissue samples for transcriptome sequencing, and then CIBERSORT algorithm was used to convert the transcriptome data into the relative content matrix of 22 kinds of immune cells, and the correlation between different intestinal flora and immune cells and immune-related genes under different BMI states was analyzed. Finally, we identified BMI-related differential functional pathways and analyzed the correlation between these pathways and differential intestinal flora. RESULT: There was no significant difference in α diversity and β diversity analysis between overweight group and normal weight group. Partial least square discriminant analysis (PLS-DA) could divide the flora into two different clusters according to BMI stratification. A total of 33 BMI-related differential flora were identified by linear discriminant effect size analysis (LEfSe), among which Actinomyces, Desulfovibrio and Bacteroides were significantly enriched ...