title: Smyd3-associated regulatory pathways in cancer.
abstract: SMYD3 is a member of the SET and MYND-domain family of methyl-transferases, the increased expression of which correlates with poor prognosis in various types of cancer. In liver and colon tumors, SMYD3 is localized in the nucleus, where it interacts with RNA Pol II and H3K4me3 and functions as a selective transcriptional amplifier of oncogenes and genes that control cell proliferation and metastatic spread. Smyd3 expression has a high discriminative power for the characterization of liver tumors and positively correlates with poor prognosis. In lung and pancreatic cancer, SMYD3 acts in the cytoplasm, potentiating oncogenic Ras/ERK signaling through the methylation of the MAP3K2 kinase and the subsequent release from its inhibitor. A clinico-pathological analysis of lung cancer patients uncovers prognostic significance of SMYD3 only for first progression survival. However, stratification of patients according to their smoking history significantly expands the prognostic value of SMYD3 to overall survival and other features, suggesting that smoking-related effects saturate the clinical analysis and mask the function of SMYD3 as an oncogenic potentiator.
authors.affiliation: Biomedical Sciences Research Center Alexander Fleming, 16672 Vari, Greece.
authors.forename: Antonis
authors.initials: A
authors.lastname: Giakountis
authors.affiliation: Biomedical Sciences Research Center Alexander Fleming, 16672 Vari, Greece.
authors.forename: Panagiotis
authors.initials: P
authors.lastname: Moulos
authors.affiliation: Biomedical Sciences Research Center Alexander Fleming, 16672 Vari, Greece.
authors.forename: Michalis E
authors.initials: ME
authors.lastname: Sarris
authors.affiliation: Biomedical Sciences Research Center Alexander Fleming, 16672 Vari, Greece.
authors.forename: Pantelis
authors.initials: P
authors.lastname: Hatzis
authors.affiliation: Biomedical Sciences Research Center Alexander Fleming, 16672 Vari, Greece. Electronic address: talianidis@fleming.gr.
authors.forename: Iannis
authors.initials: I
authors.lastname: Talianidis
mesh_terms: D063646:Carcinogenesis / Q000235:genetics; D049109:Cell Proliferation / Q000235:genetics; D015972:Gene Expression Regulation, Neoplastic; D011495:Histone-Lysine N-Methyltransferase / Q000096:biosynthesis / Q000235:genetics*; D006801:Humans; D009369:Neoplasms / Q000235:genetics* / Q000473:pathology; D011379:Prognosis; D012319:RNA Polymerase II / Q000235:genetics
chemical_list: D011495:Histone-Lysine N-Methyltransferase; C506278:SMYD3 protein, human; D012319:RNA Polymerase II
keywords: Cancer; Epigenetic mechanisms; Histone methylation; Smyd3