A metagenome-wide association study of the gut microbiota in recurrent aphthous ulcer and regulation by thalidomide

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  • 作者:Xiang Wang, Kexu Xiong, Fan Huang, Jinqun Huang, Qin Liu, Ning Duan, Huanhuan Ruan, Hongliu Jiang, Yanan Zhu, Lin Lin, Yuefeng Song, Maomao Zhao, Lichun Zheng, Pei Ye, Yajie Qian, Qingang Hu, Fuhua Yan, Wenmei Wang
  • 期刊:Front Immunol. 2022 Oct 19;13:1018567.
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Recurrent aphthous ulcer (RAU), one of the most common diseases in humans, has an unknown etiology and is difficult to treat. Thalidomide is an important immunomodulatory and antitumor drug and its effects on the gut microbiota still remain unclear. We conducted a metagenomic sequencing study of fecal samples from a cohort of individuals with RAU, performed biochemical assays of cytokines, immunoglobulins and antimicrobial peptides in serum and saliva, and investigated the regulation effects of thalidomide administration and withdrawal. Meanwhile we constructed the corresponding prediction models. Our metagenome-wide association results indicated that gut dysbacteriosis, microbial dysfunction and immune imbalance occurred in RAU patients. Thalidomide regulated gut dysbacteriosis in a species-specific manner and had different sustainable effects on various probiotics and pathogens. A previously unknown association between gut microbiota alterations and RAU was found, and the specific roles of thalidomide in modulating the gut microbiota and immunity were determined, suggesting that RAU may be affected by targeting gut dysbacteriosis and modifying immune imbalance. In-depth insights into sophisticated networks consisting of the gut microbiota and host cells may lead to the development of emerging treatments, including prebiotics, probiotics, synbiotics, and postbiotics.

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