Bonzheim, I. ; Irmler, M. ; Klier-Richter, M. ; Steinhilber, J.* ; Anastasov, N. ; Schafer, S.* ; Adam, P.* ; Beckers, J. ; Raffeld, M.* ; Fend, F.* ; Quintanilla-Martinez, L.
     
 
    
        
Identification of C/EBPβ target genes in ALK+ Anaplastic Large Cell Lymphoma (ALCL) by gene expression profiling and chromatin immunoprecipitation.
    
    
        
    
    
        
        PLoS ONE 8:e64544 (2013)
    
    
    
		
		
			
				C/EBPβ (CCAAT enhancer binding protein) is a transcription factor that plays a crucial role in survival and transformation of ALK+ anaplastic large cell lymphoma (ALCL). The aim of this study was to identify the downstream targets of C/EBPβ responsible for ALK-mediated oncogenesis. C/EBPβ was knocked down in ALK+ ALCL cell lines with a C/EBPβ-shRNA, followed by gene expression profiling (GEP). GEP analysis revealed a reproducible signature of genes that were significantly regulated by C/EBPβ. Classification into biological categories revealed overrepresentation of genes involved in the immune response, apoptosis and cell proliferation. Transcriptional regulation by C/EBPβ was found in 6 of 11 (BCL2A1, G0S2, TRIB1, S100A9, DDX21 and DDIT4) genes investigated by chromatin immunoprecipitation. We demonstrated that BCL2A1, G0S2 and DDX21 play a crucial role in survival and proliferation of ALK+ ALCL cells. DDX21, a gene involved in rRNA biogenesis, was found differentially overexpressed in primary ALK+ ALCL cases. All three candidate genes were validated in primary ALCL cases by either immunohistochemistry or RT-qPCR. In conclusion, we identified and validated several key C/EBPβ-regulated genes with major impact on survival and cell growth in ALK+ ALCL, supporting the central role of C/EBPβ in ALK-mediated oncogenesis.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Nf-kappa-b ; Binding-protein-beta ; Rna Helicase-ii/gu ; Signaling Pathway ; Cyclin D1 ; Ii Gu ; Transcription ; Kinase ; Survival ; Domains
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2013
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        2013
    
 
    
    
        ISSN (print) / ISBN
        1932-6203
    
 
    
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	    Band: 8,  
	    Heft: 5,  
	    Seiten: ,  
	    Artikelnummer: e64544 
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Public Library of Science (PLoS)
        
 
        
            Verlagsort
            Lawrence, Kan.
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
30201 - Metabolic Health
30202 - Environmental Health
    
 
    
        Forschungsfeld(er)
        Enabling and Novel Technologies
Genetics and Epidemiology
Radiation Sciences
    
 
    
        PSP-Element(e)
        G-500300-001
G-500600-004
G-500200-001
    
 
    
        Förderungen
        
    
 
    
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        Erfassungsdatum
        2013-06-24