共 26 条
RNF4 negatively regulates NF-κB signaling by down-regulating TAB2
被引:26
作者:
Tan, Bo
[1
]
Mu, Rui
[1
]
Chang, Yan
[1
]
Wang, Yu-Bo
[1
]
Wu, Min
[1
]
Tu, Hai-Qing
[1
]
Zhang, Yu-Cheng
[1
]
Guo, Sai-Sai
[1
]
Qin, Xuan-He
[1
]
Li, Tao
[1
]
Li, Wei-Hua
[1
]
Zhang, Xue-Min
[1
]
Li, Ai-Ling
[1
]
Li, Hui-Yan
[1
]
机构:
[1] Natl Ctr Biomed Anal, Inst Basic Med Sci, Beijing 100850, Peoples R China
基金:
中国国家自然科学基金;
关键词:
NF-kappa B;
TNF alpha;
IL-1;
beta;
RNF4;
TAB2;
UBIQUITIN E3 LIGASE;
ACTIVATION;
ALPHA;
PML;
D O I:
10.1016/j.febslet.2015.07.051
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
Most of NF-kappa B (nuclear factor kappa B) signaling molecules have various types of post-translational modifications. In this study, we focused on ubiquitination and designed a siRNA library including most ubiquitin-binding domains. With this library, we identified several candidate regulators of canonical NF-kappa B pathway, including RNF4. Overexpression of RNF4 impaired NF-kappa B activation in a dose-dependent manner, whereas RNF4 knockdown potentiated NF-kappa B activation. We showed that RNF4 interacts with the TAK1-TAB2-TAB3 complex, but not TAB1. Further, we found that RNF4 specifically down-regulated TAB2 through a lysosomal pathway, and knockdown of RNF4 impaired endogenous TAB2 degradation. Therefore, our findings will provide new insights into the negative regulation of NF-kappa B signaling. (C) 2015 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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页码:2850 / 2858
页数:9
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