ASB3 expression aggravates inflammatory bowel disease by targeting TRAF6 protein stability and affecting the intestinal microbiota
Ubiquitination is a key process that controls protein stability. We determined the ubiquitination of TRAF6 by ASB3 in intestinal epithelial cells during colonic inflammation. Inflammatory bowel disease patients exhibit upregulated ASB3 expression at focal sites, supporting the involvement of degradation of TRAF6, which promotes TLR-Myd88/TRIF-independent NF-κB aberrant activation and intestinal microbiota imbalance. Sustained inflammatory signaling in intestinal epithelial cells and dysregulated protective probiotic immune responses mediated by ASB3 collectively contribute to the exacerbation of inflammatory bowel disease. These findings provide insights into the pathogenesis of inflammatory bowel disease and suggest a novel mechanism by which ASB3 increases the risk of colitis. Our results suggest that future inhibition of ASB3 in intestinal epithelial cells may be a novel clinical strategy.
Authors
- Yiyuan Lu
- Yanlong Jiang (ORCID: https://orcid.org/0000-0001-5843-4301)
- Tianxu Pan
- Dongqin Yang (ORCID: https://orcid.org/0000-0003-0126-5898)
- Xin Cao (ORCID: https://orcid.org/0000-0003-3459-7207)
- Mingyang Cheng (ORCID: https://orcid.org/0000-0003-4436-8977)
- Haibin Huang (ORCID: https://orcid.org/0000-0002-8357-432X)
- Yan Zeng (ORCID: https://orcid.org/0000-0002-7894-7523)
- Yu Sun (ORCID: https://orcid.org/0000-0002-6608-1347)
- Guilian Yang (ORCID: https://orcid.org/0000-0001-5224-1592)
- Chunwei Shi (ORCID: https://orcid.org/0000-0001-7774-0400)
- Wentao Yang (ORCID: https://orcid.org/0000-0002-1686-6883)
- Nan Wang
- Jianzhong Wang (ORCID: https://orcid.org/0000-0002-6975-130X)
- Chunfeng Wang (ORCID: https://orcid.org/0000-0002-1195-0920)
- Junhong Wang (ORCID: https://orcid.org/0000-0001-7714-5257)
- Xiaoxu Li (ORCID: https://orcid.org/0000-0002-3778-3964)
- Wenhui Zhao (ORCID: https://orcid.org/0000-0002-0497-0085)
- Bin Xu (ORCID: https://orcid.org/0000-0003-3884-6573)
- Xiaomei Song
Institutions
- Tongji University (CN)
- Fudan University (CN)
- Jilin Agricultural University (CN)
- Huashan Hospital (CN)
- First People's Hospital of Chongqing (CN)
Publication Details
- Journal
- mBio
- Published
- 2024-08-20
- DOI
- https://doi.org/10.1128/mbio.02043-24
- Citations
- 5
- Primary Topic
- NF-κB Signaling Pathways
- Type
- article
- Field-Weighted Citation Impact
- 1.43
Funders
- National Natural Science Foundation of China
- Fudan University
- Tongji University
- Chinese Academy of Agricultural Sciences
- Huashan Hospital
- Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences