Märkl, F.* ; Schultheiß, C.* ; Ali, M.* ; Chen, S.S.* ; Zintchenko, M.* ; Egli, L.* ; Mietz, J.* ; Chijioke, O.* ; Paschold, L.* ; Spajic, S.* ; Holtermann, A.* ; Dörr, J.* ; Stock, S.* ; Zingg, A.* ; Läubli, H.* ; Piseddu, I.* ; Anz, D.* ; Minden, M.D.* ; Zhang, T.* ; Nerreter, T.* ; Hudecek, M.* ; Minguet, S.* ; Chiorazzi, N.* ; Kobold, S. ; Binder, M.*
     
 
    
        
Mutation-specific CAR T cells as precision therapy for IGLV3-21R110 expressing high-risk chronic lymphocytic leukemia.
    
    
        
    
    
        
        Nat. Commun. 15:993 (2024)
    
    
    
		
		
			
				The concept of precision cell therapy targeting tumor-specific mutations is appealing but requires surface-exposed neoepitopes, which is a rarity in cancer. B cell receptors (BCR) of mature lymphoid malignancies are exceptional in that they harbor tumor-specific-stereotyped sequences in the form of point mutations that drive self-engagement of the BCR and autologous signaling. Here, we use a BCR light chain neoepitope defined by a characteristic point mutation (IGLV3-21R110) for selective targeting of a poor-risk subset of chronic lymphocytic leukemia (CLL) with chimeric antigen receptor (CAR) T cells. We develop murine and humanized CAR constructs expressed in T cells from healthy donors and CLL patients that eradicate IGLV3-21R110 expressing cell lines and primary CLL cells, but neither cells expressing the non-pathogenic IGLV3-21G110 light chain nor polyclonal healthy B cells. In vivo experiments confirm epitope-selective cytolysis in xenograft models in female mice using engrafted IGLV3-21R110 expressing cell lines or primary CLL cells. We further demonstrate in two humanized mouse models lack of cytotoxicity towards human B cells. These data provide the basis for advanced approaches of resistance-preventive and biomarker-guided cellular targeting of functionally relevant lymphoma driver mutations sparing normal B cells.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Chimeric Antigen Receptors; Xenograft Models; Light-chains; Immunoglobulin; Cll; Immunotherapy; Remissions; Transgene; Vectors; Driven
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2024
    
 
    
        Prepublished im Jahr 
        0
    
 
    
        HGF-Berichtsjahr
        2024
    
 
    
    
        ISSN (print) / ISBN
        2041-1723
    
 
    
        e-ISSN
        2041-1723
    
 
    
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	    Band: 15,  
	    Heft: 1,  
	    Seiten: ,  
	    Artikelnummer: 993 
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Nature Publishing Group
        
 
        
            Verlagsort
            London
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
    
        Institut(e)
        Unit for Clinical Pharmacology (KKG-EKLiP)
    
 
    
        POF Topic(s)
        30203 - Molecular Targets and Therapies
    
 
    
        Forschungsfeld(er)
        Immune Response and Infection
    
 
    
        PSP-Element(e)
        G-522100-001
    
 
    
        Förderungen
        Fritz-Bender-Stiftung
SFB-TRR 338/1
Monika-Kutzner-Stiftung
Deutsche Jose Carreras Leukamie-Stiftung
Wilhelm-Sander-Stiftung
Else-Kroner-Fresenius-Stiftung (IOLIN)
German Cancer Aid (AvantCAR.de)
Marie-Sklodowska-Curie Program Training Network for Optimizing Adoptive T Cell Therapy of Cancer - H2020 Program of the European Union
Melanoma Research Alliance Grants
International Doctoral Program iTarget: Immunotargeting of Cancer - Elite Network of Bavaria
Intramural Roux program funding
DFG
LMU Munich's Institutional Strategy LMUexcellent
Bruno und Helene Joster Foundation
European Research Council
Bavarian Research Foundation (BAYCELLATOR)
Bundesministerium fur Bildung und Forschung Projects Oncoattract, CONTRACT and Beyondantibody
FOR2799
Deutsche Forschungsgemeinschaft (DFG)
    
 
    
        Copyright
        
    
 	
    
    
    
    
    
        Erfassungsdatum
        2024-02-06