期刊
MOLECULAR ONCOLOGY
卷 15, 期 5, 页码 1543-1565出版社
WILEY
DOI: 10.1002/1878-0261.12930
关键词
cancer metastasis; EGF receptor; EWI-2/PGRL; exosomes; miR-3934-5p; nuclear translocation
类别
资金
- National Natural Science Foundation of China [81572231]
- Project of Department of Science and Technology of Sichuan Province [2019YJ0119, 2020YFS0277]
- Postdoctoral Science Foundation of Sichuan University [2019SCU12028]
The study reveals that EWI-2 can regulate the distribution of miRNA between cells and exosomes, as well as nuclear translocation of signaling molecules and miRNA through its localization on the nuclear membrane, thus regulating PCa cell metastasis via the EGFR-MAPK-ERK pathway.
Early and accurate diagnosis of prostate cancer (PCa) is extremely important, as metastatic PCa remains hard to treat. EWI-2, a member of the Ig protein subfamily, is known to inhibit PCa cell migration. In this study, we found that EWI-2 localized on both the cell membrane and exosomes regulates the distribution of miR-3934-5p between cells and exosomes. Interestingly, we observed that EWI-2 is localized not only on the plasma membrane but also on the nuclear envelope (nuclear membrane), where it regulates the nuclear translocation of signaling molecules and miRNA. Collectively, these functions of EWI-2 found in lipid bilayers appear to regulate PCa cell metastasis through the epidermal growth factor receptor-mitogen-activated protein kinase-extracellular-signal-regulated kinase (EGFR-MAPK-ERK) pathway. Our research provides new insights into the molecular function of EWI-2 on PCa metastasis, and highlights EWI-2 as a potential PCa biomarker.
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