Schmdit, T. ; Wiesbeck, M. ; Egert, L. ; Truong, T.-T. ; Danese, A.* ; Voshagen, L.* ; Imhof, S.* ; Iraci Borgia, M.* ; Deeksha ; Neuner, A.M. ; Köferle, A. ; Geerlof, A. ; Mourao, A. ; Stricker, S.H.
     
 
    
        
Efficient DNA- and virus-free engineering of cellular transcriptomic states using dCas9 ribonucleoprotein (dRNP) complexes.
    
    
        
    
    
        
        Nucleic Acids Res. 53:gkaf235 (2025)
    
    
    
		
		
			
				For genome editing, the use of CRISPR ribonucleoprotein (RNP) complexes is well established and often the superior choice over plasmid-based or viral strategies. RNPs containing dCas9 fusion proteins, which enable the targeted manipulation of transcriptomes and epigenomes, remain significantly less accessible. Here, we describe the production, delivery, and optimization of second generation CRISPRa RNPs (dRNPs). We characterize the transcriptional and cellular consequences of dRNP treatments in a variety of human target cells and show that the uptake is very efficient. The targeted activation of genes demonstrates remarkable potency, even for genes that are strongly silenced, such as developmental master transcription factors. In contrast to DNA-based CRISPRa strategies, gene activation is immediate and characterized by a sharp temporal precision. We also show that dRNPs allow very high-target multiplexing, enabling undiminished gene activation of multiple genes simultaneously. Applying these insights, we find that intensive target multiplexing at single promoters synergistically elevates gene transcription. Finally, we demonstrate in human stem and differentiated cells that the preferable features of dRNPs allow to instruct and convert cell fates efficiently without the need for DNA delivery or viral vectors.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Gene-expression; In-vivo; Rna; Crispr; Activation; Delivery; System; Cas9; Platform; Protein
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2025
    
 
    
        Prepublished im Jahr 
        0
    
 
    
        HGF-Berichtsjahr
        2025
    
 
    
    
        ISSN (print) / ISBN
        0305-1048
    
 
    
        e-ISSN
        1362-4962
    
 
    
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	    Band: 53,  
	    Heft: 6,  
	    Seiten: ,  
	    Artikelnummer: gkaf235 
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Oxford University Press
        
 
        
            Verlagsort
            Great Clarendon St, Oxford Ox2 6dp, England
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        30204 - Cell Programming and Repair
30203 - Molecular Targets and Therapies
    
 
    
        Forschungsfeld(er)
        Stem Cell and Neuroscience
Enabling and Novel Technologies
    
 
    
        PSP-Element(e)
        G-500800-001
G-500892-001
G-503000-001
    
 
    
        Förderungen
        Humanities Research Council of Canada
natural sciences and engineering research council of canada
CIHR
REGENERAR
Helmholtz Zentrum Munchen
International Helmholtz-Edinburgh Research School for Epigenetics
EpiCrossBorders
    
 
    
        Copyright
        
    
 	
    
    
    
    
    
        Erfassungsdatum
        2025-05-05