The oncoprotein HBXIP competitively binds KEAP1 to activate NRF2 and enhance breast cancer cell growth and metastasis
The oncoprotein HBXIP competitively binds KEAP1 to activate NRF2 and enhance breast cancer cell growth and metastasis
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癌蛋白 HBXIP 竞争性结合 KEAP1 以激活 NRF2 并增强乳腺癌细胞的生长和转移
DOI:
10.1038/s41388-019-0698-5
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发表时间:
2019-01
期刊:
影响因子:
8
通讯作者:
Zou Wei
中科院分区:
文献类型:
--
作者:
Zhou Xiao Lei;Zhu Chong Yue;Wu Zhi Gang;Guo Xin;Zou Wei
The nuclear factor E2-related factor 2 (NRF2)-Kelch-like ECH-associated protein 1 (KEAP1) signaling cascades is a key transcriptional pathway governing cellular oxidative stress and tumor development. Mammalian hepatitis B X-interacting protein (HBXIP) has critical roles in modulating cancer malignance and tumor progression. However, whether HBXIP interacts with KEAP1 and NRF2 is unclear. Here, we found that HBXIP can effectually compete with NRF2 for binding with KEAP1 protein via its highly conserved GLNLG motif. The HBXIP-mediated reduction in NRF2-KEAP1 complexes promotes NRF2 accumulation and nuclear entry, which facilities the activation of antioxidant response element (ARE)-dependent signaling cascades, thereby reducing the accumulation of endogenous cellular reactive oxygen species (ROS). We also found a strong positive correlation between HBXIP expression and NRF2 expression in breast cancer cells, tissue microarrays and clinical breast cancer tissues. Furthermore, this positive correlation was further confirmed via analysis of 1905 clinical cases of breast carcinoma provided by the cancer genomics database cBioPortal. Strikingly, disrupting the HBXIP-KEAP1 axis via mutating the GLNLG motif of HBXIP leads to potent inhibition of the malignancy of breast carcinoma both in vivo and in vitro. Our findings broaden our understanding of HBXIP as a modulation factor of cellular oxidative stress and address a novel regulatory mechanism governing redox homeostasis and the progression of breast carcinoma.
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影响因子:
7.3
作者:
Gao J;Aksoy BA;Dogrusoz U;Dresdner G;Gross B;Sumer SO;Sun Y;Jacobsen A;Sinha R;Larsson E;Cerami E;Sander C;Schultz N
通讯作者:
Schultz N
影响因子:
8
作者:
Torrente L;Sanchez C;Moreno R;Chowdhry S;Cabello P;Isono K;Koseki H;Honda T;Hayes JD;Dinkova-Kostova AT;de la Vega L
通讯作者:
de la Vega L
DOI:
10.1002/hed.20430
发表时间:
2006-09-01
影响因子:
2.9
作者:
Stacy, Donnie R.;Ely, Kim;Freeman, Michael L.
通讯作者:
Freeman, Michael L.
DOI:
10.1074/jbc.m111.316471
发表时间:
2012-02-24
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Camp ND;James RG;Dawson DW;Yan F;Davison JM;Houck SA;Tang X;Zheng N;Major MB;Moon RT
通讯作者:
Moon RT
DOI:
--
发表时间:
2014
期刊:
--
影响因子:
--
作者:
Bridgid E Hast;Erica W. Cloer;D. Goldfarb;Heng Li;P. F. Siesser;Feng Yan;Vonn Walter;N. Zheng;D. Hayes;Michael B. Major
通讯作者:
Bridgid E Hast;Erica W. Cloer;D. Goldfarb;Heng Li;P. F. Siesser;Feng Yan;Vonn Walter;N. Zheng;D. Hayes;Michael B. Major