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Gut microbiota changes and its potential relations with thyroid carcinoma

生物 肠道菌群 逻辑回归 队列 蛋白质细菌 动物 遗传学 内科学 16S核糖体RNA 免疫学 基因 医学
作者
Xiaqing Yu,Wen Jiang,Russell Oliver Kosik,Yingchun Song,Qiong Luo,Tingting Qiao,Junyu Tong,Simin Liu,Chengwen Deng,Shanshan Qin,Zhongwei Lv,Dan Li
出处
期刊:Journal of Advanced Research [Elsevier BV]
卷期号:35: 61-70 被引量:58
标识
DOI:10.1016/j.jare.2021.04.001
摘要

Emerging evidence suggests that the essence of life is the ecological balance of the neural, endocrine, metabolic, microbial, and immune systems. Gut microbiota have been implicated as an important factor affecting thyroid homeostasis.This study aims to explore the relationship between gut microbiota and the development of thyroid carcinoma.Stool samples were collected from 90 thyroid carcinoma patients (TCs) and 90 healthy controls (HCs). Microbiota were analyzed using 16S ribosomal RNA gene sequencing. A cross-sectional study of an exploratory cohort of 60 TCs and 60 HCs was conducted. The gut microbiota signature of TCs was established by LEfSe, stepwise logistic regression, lasso regression, and random forest model analysis. An independent cohort of 30 TCs and 30 HCs was used to validate the findings. Functional prediction was achieved using Tax4Fun and PICRUSt2. TC patients were subsequently divided into subgroups to analyze the relationship between microbiota and metastatic lymphadenopathy.In the exploratory cohorts, TCs had reduced richness and diversity of gut microbiota compared to HCs. No significant difference was found between TCs and HCs on the phylum level, though 70% of TCs had increased levels of Proteobacteria-types based on dominant microbiota typing. A prediction model of 10 genera generated with LEfSe analysis and lasso regression distinguished TCs from HCs with areas under the curves of 0.809 and 0.746 in the exploration and validation cohorts respectively. Functional prediction suggested that the microbial changes observed in TCs resulted in a decline in aminoacyl-tRNA biosynthesis, homologous recombination, mismatch repair, DNA replication, and nucleotide excision repair. A four-genus microbial signature was able to distinguish TC patients with metastatic lymphadenopathy from those without metastatic lymphadenopathy.Our study shows that thyroid carcinoma patients demonstrate significant changes in gut microbiota, which will help delineate the relationship between gut microbiota and TC pathogenesis.
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