Schiller, H. B. ; Mayr, C.H. ; Leuschner, G. ; Strunz, M. ; Staab-Weijnitz, C.A. ; Preisendörfer, S. ; Eckes, B.* ; Moinzadeh, P.* ; Krieg, T.* ; Schwartz, D.A.* ; Hatz, R.A.* ; Behr, J.* ; Mann, M.* ; Eickelberg, O.
     
 
    
        
         Deep proteome profiling reveals common prevalence of MZB1-positive plasma B cells in human lung and skin fibrosis.
        Deep proteome profiling reveals common prevalence of MZB1-positive plasma B cells in human lung and skin fibrosis.
     
    
        
    
    
        
        Am. J. Respir. Crit. Care Med. 196, 1298-1310 (2017)
    
    
    
		
		
			
				RATIONALE: Analyzing the molecular heterogeneity of different forms of organ fibrosis may reveal common and specific factors and thus identify potential future therapeutic targets. OBJECTIVES: We sought to use proteome-wide profiling of human tissue fibrosis to (1) identify common and specific signatures across endstage interstitial lung disease (ILD) cases, (2) characterize ILD subgroups in an unbiased fashion, and (3) identify common and specific features of lung and skin fibrosis. METHODS: We collected samples of ILD tissue (n=45) and healthy donor controls (n=10), as well as fibrotic skin lesions from localized scleroderma and uninvolved skin (n=6). Samples were profiled by quantitative label-free mass spectrometry, Western blotting, or confocal imaging. MEASUREMENTS AND MAIN RESULTS: We determined the abundance of >7900 proteins and stratified these proteins according to their detergent solubility profiles. Common protein regulations across all ILD cases, as well as distinct ILD subsets, were observed. Proteome comparison of lung and skin fibrosis identified a common upregulation of MZB1, the expression of which identified MZB1+/CD38+/CD138+/CD27+/CD45-/CD20- plasma B cells in fibrotic lung and skin tissue. MZB1 levels correlated positively with tissue IgG, and negatively with diffusing capacity of the lung for carbon monoxide (DLCO). CONCLUSIONS: Despite the presumably high molecular and cellular heterogeneity of ILD, common protein regulations are observed, even across organ boundaries. The surprisingly high prevalence of MZB1+ plasma B cells in tissue fibrosis warrants future investigations regarding the causative role of antibody-mediated autoimmunity in idiopathic cases of organ fibrosis, such as idiopathic pulmonary fibrosis (IPF).
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Fibrosis, Proteomics, Ild, Localized Scleroderma (morphea), Mzb1, Autoimmunity; Idiopathic Pulmonary-fibrosis; Oligomeric Matrix Protein; Key Regulator; Tissue; Mice; Secretion; Repair; Differentiation; Identification; Regeneration
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2017
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        2017
    
 
    
    
        ISSN (print) / ISBN
        1073-449X
    
 
    
        e-ISSN
        1535-4970
    
 
    
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	    Band: 196,  
	    Heft: 10,  
	    Seiten: 1298-1310 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            American Thoracic Society
        
 
        
            Verlagsort
            New York
        
 
	
        
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        Peer reviewed
    
 
     
    
        POF Topic(s)
        80000 - German Center for Lung Research
30202 - Environmental Health
    
 
    
        Forschungsfeld(er)
        Lung Research
    
 
    
        PSP-Element(e)
        G-501800-810
G-501600-011
G-501600-002
G-501600-006
    
 
    
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        Erfassungsdatum
        2017-07-24