High-throughput 16S rRNA gene sequencing reveals alterations of mouse intestinal microbiota after radiotherapy

胃肠道 生物 普雷沃菌属 小肠 大肠 肠道菌群 微生物学 棒状杆菌 细菌 遗传学 免疫学 内分泌学 生物化学
作者
Young Suk Kim,Jinu Kim,Soo-Je Park
出处
期刊:Anaerobe [Elsevier BV]
卷期号:33: 1-7 被引量:119
标识
DOI:10.1016/j.anaerobe.2015.01.004
摘要

The mammalian gastrointestinal tract harbors a highly complex microbial community that comprises hundreds of different types of bacterial cells. The gastrointestinal microbiota plays an important role in the function of the host intestine. Most cancer patients undergoing pelvic irradiation experience side effects such as diarrhea; however, little is currently known about the effects of irradiation on the microorganisms colonizing the mucosal surfaces of the gastrointestinal tract. The aim of this study was to investigate the effects of gamma irradiation on the compositions of the large and small intestinal microbiotas. The gut microbiotas in control mice and mice receiving irradiation treatment were characterized by high-throughput sequencing of the bacterial 16S rRNA gene. Irradiation treatment induced significant alterations in the bacterial compositions of the large and small intestines at the genus level. Unexpectedly, irradiation treatment increased the number of operational taxonomic units in the small intestine but not the large intestine. In particular, irradiation treatment increased the level of the genera Alistipes in the large intestine and increased the level of the genus Corynebacterium in the small intestine. By contrast, compared with that in the corresponding control group, the level of the genera Prevotella was lower in the irradiated large intestine, and the level of the genera Alistipes was lower in the irradiated small intestine. Overall, the data presented here reveal the potential microbiological effects of pelvic irradiation on the gastrointestinal tracts of cancer patients.
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