Côme, C.* ; Cvrljevic, A.* ; Khan, M.M.* ; Treise, I. ; Adler, T. ; Aguilar-Pimentel, J.A. ; Au-Yeung, B.* ; Sittig, E.* ; Laajala, T.D.* ; Chen, Y.* ; Oeder, S. ; Calzada-Wack, J. ; Horsch, M. ; Aittokallio, T.* ; Busch, D.H.* ; Ollert, M. ; Neff, F. ; Beckers, J. ; Gailus-Durner, V. ; Fuchs, H. ; Hrabě de Angelis, M. ; Chen, Z.* ; Lahesmaa, R.* ; Westermarck, J.*
     
 
    
        
CIP2A promotes T-cell activation and immune response to Listeria monocytogenes infection.
    
    
        
    
    
        
        PLoS ONE 11:e0152996 (2016)
    
    
    
		
		
			
				The oncoprotein Cancerous Inhibitor of Protein Phosphatase 2A (CIP2A) is overexpressed in most malignancies and is an obvious candidate target protein for future cancer therapies. However, the physiological importance of CIP2A-mediated PP2A inhibition is largely unknown. As PP2A regulates immune responses, we investigated the role of CIP2A in normal immune system development and during immune response in vivo. We show that CIP2A-deficient mice (CIP2AHOZ) present a normal immune system development and function in unchallenged conditions. However when challenged with Listeria monocytogenes, CIP2AHOZ mice display an impaired adaptive immune response that is combined with decreased frequency of both CD4+ T-cells and CD8+ effector T-cells. Importantly, the cell autonomous effect of CIP2A deficiency for T-cell activation was confirmed. Induction of CIP2A expression during T-cell activation was dependent on Zap70 activity. Thus, we reveal CIP2A as a hitherto unrecognized mediator of T-cell activation during adaptive immune response. These results also reveal CIP2AHOZ as a possible novel mouse model for studying the role of PP2A activity in immune regulation. On the other hand, the results also indicate that CIP2A targeting cancer therapies would not cause serious immunological side-effects.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
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        Herausgeber
        
    
    
        Schlagwörter
        Protein Phosphatase 2a; Catalytic-activity; Cancer; Apoptosis; Pp2a; Oncoprotein; Expression; Inhibitor; Kinase; Zap70
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2016
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        2016
    
 
    
    
        ISSN (print) / ISBN
        1932-6203
    
 
    
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	    Band: 11,  
	    Heft: 4,  
	    Seiten: ,  
	    Artikelnummer: e0152996 
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Public Library of Science (PLoS)
        
 
        
            Verlagsort
            Lawrence, Kan.
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        30201 - Metabolic Health
30202 - Environmental Health
30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
    
 
    
        Forschungsfeld(er)
        Genetics and Epidemiology
Environmental Sciences
Enabling and Novel Technologies
    
 
    
        PSP-Element(e)
        G-500600-001
G-500692-001
G-504500-001
G-500300-001
G-500600-004
    
 
    
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        Erfassungsdatum
        2016-05-04