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  2. Stress triggers irritable bowel syndrome with diarrhea through a spermidine-mediated decline in type I interferon

Stress triggers irritable bowel syndrome with diarrhea through a spermidine-mediated decline in type I interferon

  • Cell Metab. 2024 Sep 28:S1550-4131(24)00366-8. doi: 10.1016/j.cmet.2024.09.002.
Li Zhang 1 Hao-Li Wang 2 Ya-Fang Zhang 2 Xin-Tao Mao 3 Ting-Ting Wu 4 Zhi-Hui Huang 4 Wan-Jun Jiang 5 Ke-Qi Fan 2 Dan-Dan Liu 2 Bing Yang 2 Mei-Hui Zhuang 6 Guang-Ming Huang 6 Yinming Liang 7 Shu Jeffrey Zhu 8 Jiang-Yan Zhong 2 Guang-Yin Xu 9 Xiao-Ming Li 10 Qian Cao 4 Yi-Yuan Li 11 Jin Jin 12
Affiliations

Affiliations

  • 1 Center for Neuroimmunology and Health Longevity, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China; Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou 310016, China.
  • 2 The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang 310058, China.
  • 3 Center for Neuroimmunology and Health Longevity, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.
  • 4 Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou 310016, China.
  • 5 College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
  • 6 Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
  • 7 School of Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003, China.
  • 8 Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China.
  • 9 Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou 215123, China.
  • 10 NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Center of Brain Science and Brain-machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China.
  • 11 Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing 210096, China. Electronic address: 103200067@seu.edu.cn.
  • 12 Center for Neuroimmunology and Health Longevity, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China; Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou 310016, China; The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang 310058, China. Electronic address: jjin4@zju.edu.cn.
Abstract

Irritable bowel syndrome with diarrhea (IBS-D) is a common and chronic gastrointestinal disorder that is characterized by abdominal discomfort and occasional diarrhea. The pathogenesis of IBS-D is thought to be related to a combination of factors, including psychological stress, abnormal muscle contractions, and inflammation and disorder of the gut microbiome. However, there is still a lack of comprehensive analysis of the logical regulatory correlation among these factors. In this study, we found that stress induced hyperproduction of xanthine and altered the abundance and metabolic characteristics of Lactobacillus murinus in the gut. Lactobacillus murinus-derived spermidine suppressed the basal expression of type I interferon (IFN)-α in plasmacytoid dendritic cells by inhibiting the K63-linked polyubiquitination of TRAF3. The reduction in IFN-α unrestricted the contractile function of colonic smooth muscle cells, resulting in an increase in bowel movement. Our findings provided a theoretical basis for the pathological mechanism of, and new drug targets for, stress-exposed IBS-D.

Keywords

AdorA2B; Lactobacillus murinus; irritable bowel syndrome with diarrhea; spermidine; stress; type I interferon; xanthine.

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