Abstract

Loss of WW domain-containing oxidoreductase (Wwox) expression has been observed in breast cancer (BC). However, its regulatory effects are largely unknown, especially in triple-negative breast cancer (TNBC). Herein, gene expression profiling revealed that JAK/STAT3 pathway was one of the most differentially modulated pathways in basal-like BC cells. The lower expression of Wwox was significantly correlated with high activation of STAT3 in basal-like cells and TNBC tissues. Overexpression of Wwox markedly inhibited proliferation and metastasis of BC cells by suppressing STAT3 activation, which is to interact with JAK2 to inhibit JAK2 and STAT3 phosphorylation. Furthermore, Wwox limited STAT3 binding to the interleukin-6 promoter, repressing expression of the IL-6 cytokine. Altogether, our data established that Wwox suppresses BC cell metastasis and proliferation by JAK2/STAT3 pathway. Targeting of Wwox with STAT3 could offer a promising therapeutic strategy for TNBC.

Details

Title
Loss of Wwox drives metastasis in triple-negative breast cancer by JAK2/STAT3 axis
Author
Chang, Renxu 1 ; Lele Song 1 ; Xu, Yi 1 ; Wu, Yanjun 1 ; Cheng, Dai 1 ; Wang, Xinyu 1 ; Sun, Xia 1 ; Hou, Yingyong 2 ; Li, Wei 3 ; Zhan, Xianbao 4 ; Zhan, Lixing 5 

 Key Laboratory of Nutrition, Metabolism, and Food Safety, Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of the Chinese Academy of Sciences, Shanghai, China 
 Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China 
 Department of General Surgery, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Zhejiang, China 
 Department of Oncology, Changhai Hospital, Second Military Medical University, Shanghai, China 
 Key Laboratory of Nutrition, Metabolism, and Food Safety, Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of the Chinese Academy of Sciences, Shanghai, China; Department of Cellular and Genetic Medicine, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, School of Basic Medical Sciences, Fudan University, Shanghai, China 
Pages
1-12
Publication year
2018
Publication date
Aug 2018
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2094557976
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.