PMID- 27787520 OWN - NLM STAT- MEDLINE DCOM- 20170828 LR - 20181113 IS - 2041-4889 (Electronic) VI - 7 IP - 10 DP - 2016 Oct 27 TI - Increased expression of EHF via gene amplification contributes to the activation of HER family signaling and associates with poor survival in gastric cancer. PG - e2442 LID - 10.1038/cddis.2016.346 [doi] AB - The biological function of E26 transformation-specific (ETS) transcription factor EHF/ESE-3 in human cancers remains largely unknown, particularly gastric cancer. The aim of this study was to explore the role of EHF in tumorigenesis and its potential as a therapeutic target in gastric cancer. By using quantitative RT-PCR (qRT-PCR), immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) assays, we investigated the expression and copy number of EHF in a cohort of gastric cancers and control subjects. Specific EHF siRNAs was used to determine the biologic impacts and mechanisms of altered EHF expression in vitro and in vivo. Dual-luciferase reporter, chromatin immunoprecipitation (ChIP) and electrophoretic mobility shift assay (EMSA) assays were performed to identify its downstream targets. Our results demonstrated that EHF was significantly upregulated and frequently amplified in gastric cancer tissues as compared with control subjects. Moreover, EHF amplification was positively correlated with its overexpression and significantly associated with poor clinical outcomes of gastric cancer patients. We also found that EHF knockdown notably inhibited gastric cancer cell proliferation, colony formation, migration, invasion and tumorigenic potential in nude mice and induced cell cycle arrest and apoptosis. Importantly, we identified EHF as a new HER2 transcription factor and the modulator of HER3 and HER4 in gastric cancer. Collectively, our findings suggest that EHF is a novel functional oncogene in gastric cancer by regulating the human epidermal growth factor receptor (HER) family of receptor tyrosine kinases and may represent a potential prognostic marker and therapeutic target for this cancer. FAU - Shi, Jing AU - Shi J AD - Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. FAU - Qu, Yiping AU - Qu Y AD - Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. FAU - Li, Xinru AU - Li X AD - Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. FAU - Sui, Fang AU - Sui F AD - Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. FAU - Yao, Demao AU - Yao D AD - Department of Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. FAU - Yang, Qi AU - Yang Q AD - Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. FAU - Shi, Bingyin AU - Shi B AD - Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. AD - Key Laboratory for Tumor Precision Medicine of Shaanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. FAU - Ji, Meiju AU - Ji M AD - Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. FAU - Hou, Peng AU - Hou P AD - Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. AD - Key Laboratory for Tumor Precision Medicine of Shaanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20161027 PL - England TA - Cell Death Dis JT - Cell death & disease JID - 101524092 RN - 0 (EHF protein, human) RN - 0 (Transcription Factors) RN - EC 2.7.10.1 (Protein-Tyrosine Kinases) SB - IM MH - Animals MH - Apoptosis/genetics MH - Cell Cycle Checkpoints/genetics MH - Cell Line, Tumor MH - Cell Movement/genetics MH - Cell Proliferation MH - Epithelial-Mesenchymal Transition/genetics MH - *Gene Amplification MH - Gene Expression Regulation, Neoplastic MH - Gene Knockdown Techniques MH - Humans MH - Male MH - Mice, Nude MH - Neoplasm Invasiveness MH - Protein-Tyrosine Kinases/*metabolism MH - Signal Transduction/*genetics MH - Stomach Neoplasms/*genetics/*pathology MH - Survival Analysis MH - Transcription Factors/*genetics/metabolism MH - Treatment Outcome MH - Xenograft Model Antitumor Assays PMC - PMC5134001 EDAT- 2016/10/28 06:00 MHDA- 2017/08/29 06:00 PMCR- 2016/10/01 CRDT- 2016/10/28 06:00 PHST- 2016/03/31 00:00 [received] PHST- 2016/09/04 00:00 [revised] PHST- 2016/09/26 00:00 [accepted] PHST- 2016/10/28 06:00 [pubmed] PHST- 2017/08/29 06:00 [medline] PHST- 2016/10/28 06:00 [entrez] PHST- 2016/10/01 00:00 [pmc-release] AID - cddis2016346 [pii] AID - 10.1038/cddis.2016.346 [doi] PST - epublish SO - Cell Death Dis. 2016 Oct 27;7(10):e2442. doi: 10.1038/cddis.2016.346.