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http://purl.uniprot.org/citations/22723427http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/22723427http://www.w3.org/2000/01/rdf-schema#comment"Eph/ephrin signaling has been implicated in various types of key cancer-enhancing processes, like migration, proliferation, and angiogenesis. In medulloblastoma, invading tumor cells characteristically lead to early recurrence and a decreased prognosis. Based on kinase-activity profiling data published recently, we hypothesized a key role for the Eph/ephrin signaling system in medulloblastoma invasion. In primary medulloblastoma samples, a significantly higher expression of EphB2 and the ligand ephrin-B1 was observed compared with normal cerebellum. Furthermore, medulloblastoma cell lines showed high expression of EphA2, EphB2, and EphB4. Stimulation of medulloblastoma cells with ephrin-B1 resulted in a marked decrease in in vitro cell adhesion and an increase in the invasion capacity of cells expressing high levels of EphB2. The cell lines that showed an ephrin-B1-induced phenotype possessed increased levels of phosphorylated EphB2 and, to a lesser extent, EphB4 after stimulation. Knockdown of EphB2 expression by short hairpin RNA completely abolished ephrin ligand-induced effects on adhesion and migration. Analysis of signal transduction identified p38, Erk, and mTOR as downstream signaling mediators potentially inducing the ephrin-B1 phenotype. In conclusion, the observed deregulation of Eph/ephrin expression in medulloblastoma enhances the invasive phenotype, suggesting a potential role in local tumor cell invasion and the formation of metastases."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.org/dc/terms/identifier"doi:10.1093/neuonc/nos130"xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"Yang H."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"Peppelenbosch M.P."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"Hulleman E."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"van Vuurden D.G."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"den Dunnen W.F."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"Garcia-Manero G."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"Diks S.H."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"Kamps W.A."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"de Bont E.S."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"Hoving E.W."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"Scherpen F.J."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"Kampen K.R."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/author"Sikkema A.H."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/date"2012"xsd:gYear
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/name"Neuro Oncol"xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/pages"1125-1135"xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/title"EphB2 activity plays a pivotal role in pediatric medulloblastoma cell adhesion and invasion."xsd:string
http://purl.uniprot.org/citations/22723427http://purl.uniprot.org/core/volume"14"xsd:string
http://purl.uniprot.org/citations/22723427http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/22723427
http://purl.uniprot.org/citations/22723427http://xmlns.com/foaf/0.1/primaryTopicOfhttps://pubmed.ncbi.nlm.nih.gov/22723427
http://purl.uniprot.org/uniprot/#_E2I6F7-mappedCitation-22723427http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/22723427
http://purl.uniprot.org/uniprot/#_B4DQP7-mappedCitation-22723427http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/22723427