The circRNA interactome-innovative hallmarks of the intra- and extracellular radiation response.
    
    
        
    
    
        
        Oncotarget 8, 78397-78409 (2017)
    
    
    
      
      
	
	    Generated by Quaking (QKI), circular RNAs (circRNAs) are newly recognised non-coding RNA (ncRNA) members characterised by tissue specificity, increased stability and enrichment within exosomes. Studies have shown that ionizing radiation (IR) can influence ncRNA transcription. However, it is unknown whether circRNAs or indeed QKI are regulated by IR. Microarray circRNA profiling and next generation sequencing revealed that circRNA expression was altered by low and medium dose exposure sourced predominantly from genes influencing the p53 pathway. CircRNAs KIRKOS-71 and KIRKOS-73 transcribed from the WWOX (WW Domain Containing Oxidoreductase) tumor suppressor (a p53 regulator) responded within hours to IR. KIRKOS-71 and KIRKOS-73 were present in exosomes yet exhibited differential transcript clearance between irradiated cell lines. Dual-quasar labelled probes and in-situ hybridization demonstrated the intercellular distribution of KIRKOS-71 and KIRKOS-73 predominantly within the perinucleus. QKI knockdown removed nuclear expression of these circRNAs with no significant effect on cytosolic KIRKOS-71 and KIRKOS-73. Distinct QKI transcription between cell lines and its augmented interaction with KIRKOS-71 and KIRKOS-73 was noted post IR. This foremost study provides evidence that QKI and circRNAs partake in the cellular irradiation response. KIRKOS-71 and KIRKOS-73 as stable secreted circRNAs may afford vital characteristics worth syphoning as promising diagnostic radiotherapy biomarkers.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
        Thesis type
        
    
 
    
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        Keywords
        Kirkos ; Quaking ; Wwox ; Circrna ; Exosomes; Circular Rnas; P53; Expression; Microrna; Cancer; Identification; Biogenesis; Proteins; Insights; Cells
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2017
    
 
    
        Prepublished in Year
        
    
 
    
        HGF-reported in Year
        2017
    
 
    
    
        ISSN (print) / ISBN
        1949-2553
    
 
    
        e-ISSN
        1949-2553
    
 
    
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	    Volume: 8,  
	    Issue: 45,  
	    Pages: 78397-78409 
	    Article Number: ,  
	    Supplement: ,  
	
    
 
    
        
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            Publisher
            Impact Journals LLC
        
 
        
            Publishing Place
            Orchard Park
        
 
	
        
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        Reviewing status
        Peer reviewed
    
 
     
    
        POF-Topic(s)
        30202 - Environmental Health
30205 - Bioengineering and Digital Health
    
 
    
        Research field(s)
        Radiation Sciences
Enabling and Novel Technologies
    
 
    
        PSP Element(s)
        G-500200-001
G-505500-001
    
 
    
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        Erfassungsdatum
        2017-08-02