Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
		
    Stable isotope-assisted lipidomics combined with nontargeted isotopomer filtering, a tool to unravel the complex dynamics of lipid metabolism.
        
        Anal. Chem. 85, 4651-4657 (2013)
    
    
    
				Investigations of complex metabolic mechanisms and networks have become a focus of research in the postgenomic area, thereby creating an increasing demand for sophisticated analytical approaches. One such tool is lipidomics analysis that provides, a detailed picture of the lipid composition of a system at a given time Introducing stable isotopes into the studied system can additionally provide information on the synthesis, transformation and degradation of individual lipid species. However, capturing the entire dynamics of lipid networks is still a challenge. We developed and evaluated a novel strategy for the in-depth analysis of the dynamics of lipid metabolism with the capacity for high molecular specificity and network coverage. The general workflow consists of stable isotope-labeling experiments, ultrahigh-performance liquid chromatography (UHPLC)/high-resolution Orbitrap-mass spectrometry (MS) lipid profiling and data processing by a software tool for global isotopomer filtering and matching. As a proof of concept, this approach was applied to the network-wide mapping of dynamic lipid metabolism in primary human skeletal muscle cells cultured for 4, 12, and 24 h with [U-C-13]-palmitate. In the myocellular lipid extracts, 692 isotopomers were detected that could be assigned to 203 labeled lipid species spanning 12 lipid (sub)classes. Interestingly, some lipid classes showed high turnover rates but stable total amounts while the amount of others increased in the course of palmitate treatment. The novel strategy presented here has the potential to open new detailed insights into the dynamics of lipid metabolism that may lead to a better understanding of physiological mechanisms and metabolic perturbations.
			
			
		Impact Factor
					Scopus SNIP
					Web of Science
Times Cited
					Times Cited
Scopus
Cited By
					
					Cited By
Altmetric
					
				5.695
					1.686
					37
					37
					
					
				Anmerkungen
				
					
						 
						
					
				
			
				
			
				Besondere Publikation
				
					
						 
					
				
			
			
			
				Auf Hompepage verbergern
				
					
						 
					
				
			
			
        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
     
    
    
        Schlagwörter
        Chromatography/tandem Mass-spectrometry ; In-vivo ; Insulin-resistance ; Human Myotubes ; Fatty-acids ; Muscle ; Metabolomics ; Ceramides ; Database ; Lipotoxicity
    
 
     
    
    
        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2013
    
 
     
    
        HGF-Berichtsjahr
        2013
    
 
    
    
        ISSN (print) / ISBN
        0003-2700
    
 
    
        e-ISSN
        1520-6882
    
 
     
     
     
	     
	 
	 
    
        Zeitschrift
        Analytical Chemistry
    
 
		
    
        Quellenangaben
        
	    Band: 85,  
	    Heft: 9,  
	    Seiten: 4651-4657 
	    
	    
	
    
 
  
         
        
            Verlag
            American Chemical Society (ACS)
        
 
         
	
         
         
         
         
         
	
         
         
         
    
         
         
         
         
         
         
         
    
        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        90000 - German Center for Diabetes Research
    
 
    
        Forschungsfeld(er)
        Helmholtz Diabetes Center
    
 
    
        PSP-Element(e)
        G-502400-001
    
 
     
     	
    
        PubMed ID
        23537127
    
    
    
        WOS ID
        WOS:000318756100063
    
    
        Erfassungsdatum
        2013-06-29