DCAF13 promotes triple-negative breast cancer metastasis by mediating DTX3 mRNA degradation
| Autor: | Jingfeng Lu, Hongchang Li, Gaofeng Pan, Anwei Mao, Weiyan Liu, Jiazhe Liu, Jingbo Qie |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
RNA Stability Ubiquitin-Protein Ligases Estrogen receptor Triple Negative Breast Neoplasms Biology Transfection Metastasis 03 medical and health sciences DDB1 0302 clinical medicine Cell Movement Cell Line Tumor Biomarkers Tumor medicine Humans PTEN Tensin Neoplasm Invasiveness Neoplasm Metastasis Receptor Notch4 3' Untranslated Regions Molecular Biology Triple-negative breast cancer RNA-Binding Proteins Cell Biology medicine.disease Up-Regulation Ubiquitin ligase Gene Expression Regulation Neoplastic 030104 developmental biology Gene Knockdown Techniques 030220 oncology & carcinogenesis biology.protein Cancer research Female Signal Transduction Research Paper Developmental Biology Deltex E3 ubiquitin ligase 3 |
| Zdroj: | Cell Cycle |
| ISSN: | 1551-4005 1538-4101 |
| DOI: | 10.1080/15384101.2020.1859196 |
| Popis: | DCAF13 is firstly identified as a substrate receptor of CUL4-DDB1 E3 ligase complex. This study disclosed that DCAF13 acted as a novel RNA binding protein (RBP) that contributed to triple-negative breast cancer (TNBC) metastasis. Clinical data obtained from TCGA and our collection showed that DCAF13 was closely correlated with poor clinicopathological characteristics and overall survival, which indicated DCAF13 may serve as a diagnostic marker for TNBC metastasis. Functionally, DCAF13 overexpression or suppression was sufficient to enhance or decrease breast cancer cell migration and invasion. Mechanistically, DCAF13 functioned as an RBP by binding with the AU-rich element (ARE) of DTX3 mRNA 3ʹUTR to accelerate its degradation. Moreover, we identified that DTX3 promoted the ubiquitination and degradation of NOTCH4. Finally, increased DCAF13 expression led to post-transcriptional decay of DTX3 mRNA and consequently activated of NOTCH4 signaling pathway in TNBC. In conclusion, these results identified that DCAF13 as a diagnostic marker and therapeutic target for TNBC treatment. Abbreviation: DCAF13: DDB1 and CUL4-associated factor 13; DDB1: DNA-binding protein 1; CUL4: Cullin 4; CRL4, Cullin-ring finger ligase 4; RBP: RNA binding protein; TNBC: triple-negative breast cancer; ARE: AU-rich element; DTX3: Deltex E3 ubiquitin ligase 3; HER2: human epidermal growth factor receptor 2; ER: estrogen receptor; PR: progesterone receptor; PTEN: phosphatase and tensin homolog deleted on chromosome 10; EMT: epithelial-mesenchymal transition. |
| Databáze: | OpenAIRE |
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