Zambusi, A. ; Novoselc, K.T. ; Hutten, S.* ; Kalpazidou, S.* ; Koupourtidou, C.* ; Schieweck, R.* ; Aschenbroich, S.* ; Silva, L.* ; Yazgili, A.S. ; van Bebber, F.* ; Schmid, B.* ; Möller, G.* ; Tritscher, C.* ; Stigloher, C.* ; Delbridge, C.* ; Sirko, S. ; Günes, Z.I.* ; Liebscher, S.* ; Schlegel, J.* ; Aliee, H. ; Theis, F.J. ; Meiners, S. ; Kiebler, M.* ; Dormann, D.* ; Ninkovic, J.
     
    
        
TDP-43 condensates and lipid droplets regulate the reactivity of microglia and regeneration after traumatic brain injury.
    
    
        
    
    
        
        Nat. Neurosci. 25, 1608-1625 (2022)
    
    
 	
    
	
	  DOI
 DOI
	  PMC
 PMC
		
		
			Open Access Green as soon as Postprint is submitted to ZB.
		
     
    
      
      
	
	    Decreasing the activation of pathology-activated microglia is crucial to prevent chronic inflammation and tissue scarring. In this study, we used a stab wound injury model in zebrafish and identified an injury-induced microglial state characterized by the accumulation of lipid droplets and TAR DNA-binding protein of 43 kDa (TDP-43)+ condensates. Granulin-mediated clearance of both lipid droplets and TDP-43+ condensates was necessary and sufficient to promote the return of microglia back to the basal state and achieve scarless regeneration. Moreover, in postmortem cortical brain tissues from patients with traumatic brain injury, the extent of microglial activation correlated with the accumulation of lipid droplets and TDP-43+ condensates. Together, our results reveal a mechanism required for restoring microglia to a nonactivated state after injury, which has potential for new therapeutic applications in humans.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
        Thesis type
        
    
 
    
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        Keywords
        Liquid Phase-separation; Adult Brain; Stem-cells; Zebrafish; Progranulin; Model; Roles; Fus; Degeneration; Transition
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2022
    
 
    
        Prepublished in Year
        0
    
 
    
        HGF-reported in Year
        2022
    
 
    
    
        ISSN (print) / ISBN
        1097-6256
    
 
    
        e-ISSN
        1546-1726
    
 
    
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	    Volume: 25,  
	    Issue: 12,  
	    Pages: 1608-1625 
	    Article Number: ,  
	    Supplement: ,  
	
    
 
    
        
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            Publisher
            Nature Publishing Group
        
 
        
            Publishing Place
            Heidelberger Platz 3, Berlin, 14197, Germany
        
 
	
        
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        Reviewing status
        Peer reviewed
    
 
     
    
        POF-Topic(s)
        30204 - Cell Programming and Repair
30202 - Environmental Health
30205 - Bioengineering and Digital Health
    
 
    
        Research field(s)
        Stem Cell and Neuroscience
Lung Research
Enabling and Novel Technologies
    
 
    
        PSP Element(s)
        G-500800-001
G-501600-004
G-503800-001
    
 
    
        Grants
        Ludwig-Maximilians-Universitat Munchen
Gutenberg Forschungskolleg
Fritz Thyssen Stiftung
Deutsche Forschungsgemeinschaft
Munich Cluster for Systems Neurology
JGU Mainz
Graduate School for Systemic Neurosciences GSN-LMU
Forschungsinitiative des Landes Rheinland-Pfalz
Ampro Helmholtz Alliance
    
 
    
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        Erfassungsdatum
        2022-12-08