Braun, F.* ; Hentschel, A.* ; Sickmann, A.* ; Marteau, T.* ; Hertel, S.* ; Förster, F.* ; Prokisch, H. ; Wagner, M. ; Wortmann, S.* ; Della Marina, A.* ; Kölbel, H.* ; Roos, A.* ; Schara‐Schmidt, U.*
     
    
        
Muscular and molecular pathology associated with SPATA5 deficiency in a child with EHLMRS.
    
    
        
    
    
        
        Int. J. Mol. Sci. 22:7835 (2021)
    
    
    
      
      
	
	    Mutations in the SPATA5 gene are associated with epilepsy, hearing loss and mental retardation syndrome (EHLMRS). While SPATA5 is ubiquitously expressed and is attributed a role within mitochondrial morphogenesis during spermatogenesis, there is only limited knowledge about the associated muscular and molecular pathology. This study reports on a comprehensive workup of muscular pathology, including proteomic profiling and microscopic studies, performed on an 8‐year‐old girl with typical clinical presentation of EHLMRS, where exome analysis revealed two clinically relevant, compound‐heterozygous variants in SPATA5. Proteomic profiling of a quadriceps biopsy showed the dysregulation of 82 proteins, out of which 15 were localized in the mitochondrion, while 19 were associated with diseases presenting with phenotypical overlap to EHLMRS. Histological staining of our patient’s muscle biopsy hints towards mitochondrial pathology, while the identification of dysregulated proteins attested to the vulnerability of the cell beyond the mitochondria. Through our study we provide insights into the molecular etiology of EHLMRS and provide further evidence for a muscle pathology associated with SPATA5 deficiency, including a pathological histochemical pattern accompanied by dysregulated protein expression.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
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        Keywords
        Ehlmrs ; Mitochondrial Disorder ; Muscle Proteomics ; Myopathology ; Spata5; Trifunctional Protein-deficiency; Mutations; Disorder
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2021
    
 
    
        Prepublished in Year
        
    
 
    
        HGF-reported in Year
        2021
    
 
    
    
        ISSN (print) / ISBN
        1661-6596
    
 
    
        e-ISSN
        1422-0067
    
 
    
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	    Volume: 22,  
	    Issue: 15,  
	    Pages: ,  
	    Article Number: 7835 
	    Supplement: ,  
	
    
 
    
        
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            MDPI
        
 
        
            Publishing Place
            Basel
        
 
	
        
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        Reviewing status
        Peer reviewed
    
 
     
    
        POF-Topic(s)
        30205 - Bioengineering and Digital Health
    
 
    
        Research field(s)
        Genetics and Epidemiology
    
 
    
        PSP Element(s)
        G-503292-001
G-503200-001
    
 
    
        Grants
        European Regional Development Fund (ERDF)
French Muscular Dystrophy Association (AFM-Telethon)
Bundesministerium furBildung und Forschung
European Regional Development Fund
Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen
Bundesministerium für Bildung und Forschung
    
 
    
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        Erfassungsdatum
        2021-08-02