Microbial-host-isozyme analyses reveal microbial DPP4 as a potential antidiabetic target

Author:

Wang Kai12ORCID,Zhang Zhiwei12ORCID,Hang Jing134ORCID,Liu Jia5ORCID,Guo Fusheng67ORCID,Ding Yong12ORCID,Li Meng12ORCID,Nie Qixing12ORCID,Lin Jun12,Zhuo Yingying12,Sun Lulu8,Luo Xi12,Zhong Qihang134,Ye Chuan12,Yun Chuyu12,Zhang Yi12ORCID,Wang Jue6ORCID,Bao Rui9ORCID,Pang Yanli134ORCID,Wang Guang5ORCID,Gonzalez Frank J.8ORCID,Lei Xiaoguang67ORCID,Qiao Jie13410ORCID,Jiang Changtao1211ORCID

Affiliation:

1. Department of Physiology and Pathophysiology, School of Basic Medical Sciences, State Key Laboratory of Female Fertility Promotion, Center for Reproductive Medicine, Peking University, Beijing, China.

2. Center for Obesity and Metabolic Disease Research, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China.

3. Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.

4. National Clinical Research Center for Obstetrics and Gynecology (Peking University Third Hospital), Beijing, China.

5. Department of Endocrinology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China.

6. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Department of Chemical Biology, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center, Peking University, Beijing, China.

7. Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.

8. Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.

9. Center of Infectious Diseases, Division of Infectious Diseases in State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.

10. Beijing Advanced Innovation Center for Genomics, Beijing, China.

11. Center of Basic Medical Research, Institute of Medical Innovation and Research, Third Hospital, Peking University, Beijing, China.

Abstract

A mechanistic understanding of how microbial proteins affect the host could yield deeper insights into gut microbiota–host cross-talk. We developed an enzyme activity–screening platform to investigate how gut microbiota–derived enzymes might influence host physiology. We discovered that dipeptidyl peptidase 4 (DPP4) is expressed by specific bacterial taxa of the microbiota. Microbial DPP4 was able to decrease the active glucagon like peptide-1 (GLP-1) and disrupt glucose metabolism in mice with a leaky gut. Furthermore, the current drugs targeting human DPP4, including sitagliptin, had little effect on microbial DPP4. Using high-throughput screening, we identified daurisoline-d4 (Dau-d4) as a selective microbial DPP4 inhibitor that improves glucose tolerance in diabetic mice.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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