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A comparative study of microbial community and functions of type 2 diabetes mellitus patients with obesity and healthy people

  • Genomics, transcriptomics, proteomics
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Abstract

The gut microbiota is crucial in the pathogenesis of type 2 diabetes mellitus (T2DM). However, the metabolism of T2DM patients is not well-understood. We aimed to identify the differences on composition and function of gut microbiota between T2DM patients with obesity and healthy people. In this study, 6 T2DM patients with obesity and 6 healthy volunteers were recruited, and metagenomic approach and bioinformatics analysis methods were used to understand the composition of the gut microbiota and the metabolic network. We found a decrease in the abundance of Firmicutes, Oribacterium, and Paenibacillus; this may be attributed to a possible mechanism and biological basis of T2DM; moreover, we identified three critical bacterial taxa, Bacteroides plebeius, Phascolarctobacterium sp. CAG207, and the order Acidaminococcales that can potentially be used for T2DM treatment. We also revealed the composition of the microbiota through functional annotation based on multiple databases and found that carbohydrate metabolism contributed greatly to the pathogenesis of T2DM. This study helps in elucidating the different metabolic roles of microbes in T2DM patients with obesity.

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Acknowledgments

We would like to thank Beijing Hepingli Hospital in helping recruit subjects.

Funding

This research was funded by the National Natural Science Foundation of China, grant number NSFC 81774171, Tangshan Science and Technology Innovation Team Training Program grant number 18130219A, and collaborative innovation project of Chaoyang District in Beijing grant number CYXC1719.

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Correspondence to Si-Hua Gao or Guang-Jian Jiang.

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The authors declare that they have no conflict of interest.

Ethical statement

This article contains studies with human participants, and this study was carried out according to the guidelines of the Declaration of Helsinki, and the study protocol was approved by the Ethical Committee of Beijing Hepingli Hospital with both written and verbal consent from the subjects of the study.

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Wang, TY., Zhang, XQ., Chen, AL. et al. A comparative study of microbial community and functions of type 2 diabetes mellitus patients with obesity and healthy people. Appl Microbiol Biotechnol 104, 7143–7153 (2020). https://doi.org/10.1007/s00253-020-10689-7

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  • DOI: https://doi.org/10.1007/s00253-020-10689-7

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