期刊
ONCOTARGET
卷 6, 期 12, 页码 10175-10194出版社
IMPACT JOURNALS LLC
DOI: 10.18632/oncotarget.3391
关键词
FAK; Yes; migration; metastasis; prostate cancer
资金
- National Institutes of Health (NIH) [P50 CA140388]
- National Cancer Institute (NCI) [K12 CA086913-13]
- Prostate Cancer Foundation Challenge Award [1RO1 CA164193]
- NIH [RO-1 CA174798]
- NIH (CCSG, MD Anderson Cancer Center core grant) [CA16672]
- MD Anderson Cancer Center Prostate Cancer Moonshots Program
To study the role of FAK signaling complexes in promoting metastatic properties of prostate cancer (PCa) cells, we selected stable, highly migratory variants, termed PC3 Mig-3 and DU145 Mig-3, from two well-characterized PCa cell lines, PC3 and DU145. These variants were not only increased migration and invasion in vitro, but were also more metastatic to lymph nodes following intraprostatic injection into nude mice. Both PC3 Mig-3 and DU145 Mig-3 were specifically increased in phosphorylation of FAK Y861. We therefore examined potential alterations in Src family kinases responsible for FAK phosphorylation and determined only Yes expression was increased. Overexpression of Yes in PC3 parental cells and src-/-fyn-/-yes-/- fibroblasts selectively increased FAK Y861 phosphorylation, and increased migration. Knockdown of Yes in PC3 Mig-3 cells decreased migration and decreased lymph node metastasis following orthotopic implantation of into nude mice. In human specimens, Yes expression was increased in lymph node metastases relative to paired primary tumors from the same patient, and increased pFAK Y861 expression in lymph node metastases correlated with poor prognosis. These results demonstrate a unique role for Yes in phosphorylation of FAK and in promoting PCa metastasis. Therefore, phosphorylated FAK Y861 and increased Yes expression may be predictive markers for PCa metastasis.
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