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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 41, No. 1, 2020, pp. 20-31
Bioline Code: zr20003
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 41, No. 1, 2020, pp. 20-31

 en Dysbiosis of gut microbiome affecting small intestine morphology and immune balance: a rhesus macaque model
Li, Hong-Zhe; Li, Nan; Wang, Jing-Jing; Li, Heng; Huang, Xing; Guo, Lei; Zheng, Hui-Wen; He, Zhan-Long; Zhao, Yuan; Yang, Ze-Ning; Fan, Hai-Tao; Chu, Man-Man; Yang, Jin-Xi; Wu, Qiong-Wen & Liu, Long-Ding

Abstract

There is a growing appreciation for the specific health benefits conferred by commensal microbiota on their hosts. Clinical microbiota analysis and animal studies in germ-free or antibiotic-treated mice have been crucial for improving our understanding of the role of the microbiome on the host mucosal surface; however, studies on the mechanisms involved in microbiome-host interactions remain limited to small animal models. Here, we demonstrated that rhesus monkeys under short-term broad-spectrum antibiotic treatment could be used as a model to study the gut mucosal host-microbiome niche and immune balance with steady health status. Results showed that the diversity and community structure of the gut commensal bacteria in rhesus monkeys were both disrupted after antibiotic treatment. Furthermore, the 16S rDNA amplicon sequencing results indicated that Escherichia check for this species in other resources - Shigella check for this species in other resources were predominant in stool samples 9 d of treatment, and the abundances of bacterial functional genes and predicted KEGG pathways were significantly changed. In addition to inducing aberrant morphology of small intestinal villi, the depletion of gut commensal bacteria led to increased proportions of CD3+ T, CD4+ T, and CD16+ NK cells in peripheral blood mononuclear cells (PBMCs), but decreased numbers of Treg and CD20+ B cells. The transcriptome of PBMCs from antibiotic-treated monkeys showed that the immune balance was affected by modulation of the expression of many functional genes, including IL-13, VCAM1, and LGR4.

Keywords
Gut microbiome; Rhesus macaque; Antibiotic treatment; Immune response; Pathological changes

 
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