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Huang T, Gao Z, Zhang Y, Fan K, Wang F, Li Y, Zhong J, Fan HY, Cao Q, Zhou J, Xiao Y, Hu H, Jin J. CRL4 DCAF2 negatively regulates IL-23 production in dendritic cells and limits the development of psoriasis. J Exp Med 2018; 215:1999-2017. [PMID: 30018073 PMCID: PMC6080916 DOI: 10.1084/jem.20180210] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/18/2018] [Accepted: 06/14/2018] [Indexed: 02/05/2023] Open
Abstract
The E3 ligase CRL4DCAF2 is believed to be a pivotal regulator of the cell cycle and is required for mitotic and S phase progression. The NEDD8-targeting drug MLN4924, which inactivates cullin ring-finger ubiquitin ligases (CRLs), has been examined in clinical trials for various types of lymphoma and acute myeloid leukemia. However, the essential role of CRL4DCAF2 in primary myeloid cells remains poorly understood. MLN4924 treatment, which mimics DCAF2 depletion, also promotes the severity of mouse psoriasis models, consistent with the effects of reduced DCAF2 expression in various autoimmune diseases. Using transcriptomic and immunological approaches, we showed that CRL4DCAF2 in dendritic cells (DCs) regulates the proteolytic fate of NIK and negatively regulates IL-23 production. CRL4DCAF2 promoted the polyubiquitination and subsequent degradation of NIK independent of TRAF3 degradation. DCAF2 deficiency facilitated NIK accumulation and RelB nuclear translocation. DCAF2 DC-conditional knockout mice displayed increased sensitivity to autoimmune diseases. This study shows that CRL4DCAF2 is crucial for controlling NIK stability and highlights a unique mechanism that controls inflammatory diseases.
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Affiliation(s)
- Tao Huang
- Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Zhengjun Gao
- Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Yu Zhang
- Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, China
| | - Keqi Fan
- Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Fei Wang
- Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Yiyuan Li
- Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Jiangyan Zhong
- Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Heng Y Fan
- Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Qian Cao
- Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, China
| | - Jiyong Zhou
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, Hangzhou, China
| | - Yichuan Xiao
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hongbo Hu
- Department of Rheumatology and Immunology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, Chengdu, China
| | - Jin Jin
- Life Sciences Institute, Zhejiang University, Hangzhou, China
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, Hangzhou, China
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