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Sci Rep ; 7(1): 11501, 2017 09 13.
Article in English | MEDLINE | ID: mdl-28904399

ABSTRACT

Prostate cancer (PCa) is among the most commonly-occurring cancers worldwide and a leader in cancer-related deaths. Local non-invasive PCa is highly treatable but limited treatment options exist for those with locally-advanced and metastatic forms of the disease underscoring the need to identify mechanisms mediating PCa progression. The semaphorins are a large grouping of membrane-associated or secreted signalling proteins whose normal roles reside in embryogenesis and neuronal development. In this context, semaphorins help establish chemotactic gradients and direct cell movement. Various semaphorin family members have been found to be up- and down-regulated in a number of cancers. One family member, Semaphorin 3 C (SEMA3C), has been implicated in prostate, breast, ovarian, gastric, lung, and pancreatic cancer as well as glioblastoma. Given SEMA3C's roles in development and its augmented expression in PCa, we hypothesized that SEMA3C promotes epithelial-to-mesenchymal transition (EMT) and stem-like phenotypes in prostate cells. In the present study we show that ectopic expression of SEMA3C in RWPE-1 promotes the upregulation of EMT and stem markers, heightened sphere-formation, and cell plasticity. In addition, we show that SEMA3C promotes migration and invasion in vitro and cell dissemination in vivo.


Subject(s)
Epithelial-Mesenchymal Transition/genetics , Neoplastic Stem Cells/metabolism , Prostatic Neoplasms/genetics , Prostatic Neoplasms/metabolism , Semaphorins/genetics , Animals , Biomarkers , Cell Line, Tumor , Cell Movement , Cell Proliferation , Disease Models, Animal , Gene Expression , Heterografts , Humans , Immunophenotyping , Male , Mice , Neoplasm Invasiveness , Prostatic Neoplasms/pathology
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