Cited by 120Inflammasome and immune disordersInflammatory Bowel DiseaseImmune Response and Inflammation

Trimethylamine N-oxide prime NLRP3 inflammasome via inhibiting ATG16L1-induced autophagy in colonic epithelial cells

Yue, Chaochi, Yang, Xiangdong, Li, Jun, Chen, Xiaochao, Zhao, Xiangdong, Chen, Ye, Wen, Yong·2017·Biochemical and Biophysical Research Communications

Abstract

Recently, the intricate relationship between Trimethylamine N-oxide (TMAO) and inflammatory bowel disease (IBD) is of growing interest. The NLRP3 inflammasome plays crucial roles in gut homeostasis and determining the severity of inflammation in IBD, however, the precise roles of the NLRP3 inflammasome in IBD are still debated. ATG16L1 mediates the cellular degradative process of autophagy and is considered a critical regulator of inflammation based on its genetic association with IBD. Whether TMAO prime NLRP3 inflammasome via ATG16L1-induced autophagy remains unclear. This study observed the expression of ATG16L1, LC3-II and p62 and activation of NLRP3 inflammasome stimulated by TMAO in fetal human colon cells (FHCs), aiming to elucidate the mechanism by which the TMAO may contribute to colonic epithelial inflammation. Our results demonstrated that TMAO significantly inhibited ATG16L1, LC3-II and p62 expression, and triggered the activated NLRP3 inflammasome and production of ROS in a dose- and time-dependent manner. Furthermore, TMAO-mediated effects were observably reversed by over-expression ATG16L1 and siRNA-mediated knockdown NLRP3.The present results support the hypothesis that TMAO may be involved in the pathogenesis of IBD by impacting ATG16L1-induced autophagy and activating NLRP3 inflammasome, suggesting a potential therapeutic targets for the treatment of IBD and TMAO-associated complications.

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Crossref · 10.1016/j.bbrc.2017.06.075

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Authors
Yue, C., Yang, X., Li, J., Chen, X., Zhao, X., Chen, Y., & Wen, Y.
Affiliations
Southwest Medical University (CN)
Corresponding author
Yang, Xiangdong
Venue
Biochemical and Biophysical Research Communications
Publisher
Elsevier BV
Published
2017-08
Volume
490
Issue
2
Pages
541-551
ISSN
0006-291X (ISSN-L)
OpenAlex
W2626783532
Cited by
120
References
30
Citations by year
2026: 16 · 2025: 19 · 2024: 18 · 2023: 15 · 2022: 16 · 2021: 11 · 2020: 10 · 2019: 9 · 2018: 6
FWCI
2.79
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemical and Biophysical Research Communications (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
trimethylamine N-oxide, NLRP3 inflammasome, ATG16L1, autophagy, inflammatory bowel disease, colonic epithelial cells, reactive oxygen species, LC3-II, p62, gut microbiota metabolites, inflammation
MeSH terms
Autophagy-Related Proteins, NLR Family, Pyrin Domain-Containing 3 Protein, Autophagy, Cell Line, Colon, Humans, Intestinal Mucosa, Methylamines, Inflammatory Bowel Diseases, Down-Regulation, Reactive Oxygen Species, RNA Interference, RNA, Small Interfering

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