title: Interactional expression of netrin-1 and its dependence receptor UNC5B in prostate carcinoma.
abstract: Acting via its receptor UNC5B, netrin-1, one of the major neuronal guidance cues, plays an important role in angiogenesis, neurogenesis, tissue morphogenesis, embryonic development, cancer, inflammation, and various pathologies. However, its role has not been reported in prostate carcinoma. To investigate the association of netrin-1 and UNC5B expression with prostate carcinoma, several human prostate carcinoma cell lines were cultured and the expression levels of netrin-1 and UNC5B were determined by real-time PCR and Western blot. Calphostin C, (the inhibitor of PKC α) and phorbol-12-myristate 13-acetate-PMA (the agonist of PKC α) were used to treat the prostate carcinoma cells, and the cell proliferation and invasion abilities were measured by CCK-8 and wound-healing assays. Proliferation of DU145 cells was affected by the recruitment of PMA and calphostin C in a dose-dependent manner. By immunofluorescence, we identified the localization of netrin-1 and UNC5B in prostate carcinoma cell lines (DU145, 22RV1, PC3, PC3M, and RWEP) and found that netrin-1 was highly expressed in the nucleolus but there was no expression of UNC5B. The co-localization expression of PKC α and UNC5B was confirmed by the confocal immunofluorescence. Higher netrin-1 and lower UNC5B expression in all prostate carcinoma cell lines indicated that netrin-1 and UNC5B could be used to predict metastasis.
authors.affiliation: Department of Urology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China, 110001, kongchuize_cmu@yahoo.com.cn.
authors.forename: Chui-ze
authors.initials: CZ
authors.lastname: Kong
authors.forename: Jiao
authors.initials: J
authors.lastname: Liu
authors.forename: Lin
authors.initials: L
authors.lastname: Liu
authors.forename: Zhe
authors.initials: Z
authors.lastname: Zhang
authors.forename: Kun-feng
authors.initials: KF
authors.lastname: Guo
mesh_terms: D045744:Cell Line, Tumor; D002465:Cell Movement; D002466:Cell Nucleolus / Q000378:metabolism; D049109:Cell Proliferation; D003593:Cytoplasm / Q000378:metabolism; D015870:Gene Expression; D006801:Humans; D008297:Male; D009414:Nerve Growth Factors / Q000235:genetics / Q000378:metabolism*; D000075386:Netrin Receptors; D000075388:Netrin-1; D009685:Nuclear Envelope / Q000378:metabolism; D011471:Prostatic Neoplasms / Q000378:metabolism*; D051571:Protein Kinase C-alpha / Q000378:metabolism; D021381:Protein Transport; D011956:Receptors, Cell Surface / Q000235:genetics / Q000378:metabolism*; D025521:Tumor Suppressor Proteins / Q000235:genetics / Q000378:metabolism*
chemical_list: C000617351:NTN1 protein, human; D009414:Nerve Growth Factors; D000075386:Netrin Receptors; D011956:Receptors, Cell Surface; D025521:Tumor Suppressor Proteins; C532445:UNC5B protein, human; D000075388:Netrin-1; C496628:PRKCA protein, human; D051571:Protein Kinase C-alpha