title: Fibroblast growth factor receptor 1 oncogene partner as a novel prognostic biomarker and therapeutic target for lung cancer.
abstract: To screen candidate molecules that might be useful as diagnostic biomarkers or for development of novel molecular-targeting therapies, we previously carried out gene-expression profile analysis of 101 lung carcinomas and detected an elevated expression of FGFR1OP (fibroblast growth factor receptor 1 oncogene partner) in the majority of lung cancers. Immunohistochemical staining using tumor tissue microarrays consisting of 372 archived non-small cell lung cancer (NSCLC) specimens revealed positive staining of FGFR1OP in 334 (89.8%) of 372 NSCLCs. We also found that the high level of FGFR1OP expression was significantly associated with shorter tumor-specific survival times (P < 0.0001 by log-rank test). Moreover, multivariate analysis determined that FGFR1OP was an independent prognostic factor for surgically treated NSCLC patients (P < 0.0001). Treatment of lung cancer cells, in which endogenous FGFR1OP was overexpressed, using FGFR1OP siRNA, suppressed its expression and resulted in inhibition of the cell growth. Furthermore, induction of FGFR1OP increased the cellular motility and growth-promoting activity of mammalian cells. To investigate its function, we searched for FGFR1OP-interacting proteins in lung cancer cells and identified ABL1 (Abelson murine leukemia viral oncogene homolog 1) and WRNIP1 (Werner helicase interacting protein 1), which was known to be involved in cell cycle progression. FGFR1OP significantly reduced ABL1-dependent phosphorylation of WRNIP1 and resulted in the promotion of cell cycle progression. Because our data imply that FGFR1OP is likely to play a significant role in lung cancer growth and progression, FGFR1OP should be useful as a prognostic biomarker and probably as a therapeutic target for lung cancer.
authors: Laboratory of Molecular Medicine, Human Genome Center, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan.
authors: Yuria
authors: Y
authors: Mano
authors: Koji
authors: K
authors: Takahashi
authors: Nobuhisa
authors: N
authors: Ishikawa
authors: Atsushi
authors: A
authors: Takano
authors: Wataru
authors: W
authors: Yasui
authors: Kouki
authors: K
authors: Inai
authors: Hitoshi
authors: H
authors: Nishimura
authors: Eiju
authors: E
authors: Tsuchiya
authors: Yusuke
authors: Y
authors: Nakamura
authors: Yataro
authors: Y
authors: Daigo
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis; D015153:Blotting, Western; D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy / Q000473:pathology*; D045744:Cell Line, Tumor; D017931:DNA Primers; D005434:Flow Cytometry; D006801:Humans; D007150:Immunohistochemistry; D008175:Lung Neoplasms / Q000188:drug therapy* / Q000473:pathology*; D009928:Organ Specificity; D011379:Prognosis; D011518:Proto-Oncogene Proteins / Q000032:analysis* / Q000235:genetics; D034741:RNA, Small Interfering / Q000627:therapeutic use
chemical_list: D014408:Biomarkers, Tumor; C117597:CEP43 protein, human; D017931:DNA Primers; D011518:Proto-Oncogene Proteins; D034741:RNA, Small Interfering