Journal
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
Volume 506, Issue 3, Pages 563-570Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2018.10.109
Keywords
FAT10; Breast cancer; EMT; ZEB2; Ubiquitination; Migration
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FAT10, an ubiquitin-like protein, functions as a potential tumor promoter in several caners. However, the function and clinical significance of FAT10 in breast cancer (BC) remains unclear. Here, we found that high FAT10 expression was detected frequently in primary BC tissues, and was closely associated with malignant phenotype and shorter survival among the BC patients. Multivariate analyses also revealed that FAT10 overexpression was independent prognostic factors for poor outcome of patients with BC. Function assay demonstrated that FAT10 knockdown significantly inhibited the metastasis abilities and the epithelial-mesenchymal transition (EMT) of breast cancer cell. Further investigation revealed that FAT10 directly bound ZEB2 and decreased its ubiquitination to enhance the protein stability of ZEB2 in BC cells. Moreover, our data shown that the pro-metastasis effect of FAT10 in BC is partially dependent on ZEB2 enhancement. Collectively, our data suggest that FAT10 plays a crucial oncogenic role in BC metastasis, and we provide a novel evidence that FAT10 may be serve as a prognostic and therapeutic target for BC patients. (C) 2018 Published by Elsevier Inc.
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