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      Ovine IFN-τ
       
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      產(chǎn)品說明書
                  
      FAQ
                  
      COA
                  
      已發(fā)表文獻
                  
       
      IFN-τ is a new class of type I IFN that is secreted by the trophoblast and is the signal for maternal recognition of pregnancy in sheep. IFN-τ has potent immunosuppressive and antiviral activities similar to other type I IFN but is less cytotoxic than IFN-α/β. The current investigation concerns the effect of recombinant ovine IFN-tau (rOvIFN-τ) on the modulation of MHC class I and II expression on cloned mouse cerebrovascular endothelial (CVE) cells. IFN-tau induced tyrosine phosphorylation of Stat1 and up regulated the expression of MHC class I on CVE. One proposed action by which type I IFN reduce the relapse rate in MS is via interference with IFN-γ-induced MHC class II expression. IFN-τ was shown to down regulate IFN-γ-induced MHC class II expression on CVE and, hence, may be of potential therapeutic value in down regulating inflammation in the central nervous system (CNS). IFN-τ did not upregulate the expression of MHC class II on CVE. IFN-τ also inhibited the replication of Theiler's virus in CVE.
      


       
      


      Product Properties
      


      
	
		
      
			
			
      Synonyms
      
			      		
			
			
      Interferon tau-1；IFN-tau-1；Trophoblast antiluteolytic protein；Trophoblast protein 1
      
			      		
		
      
		
      
			
			
      Accession
      
			      		
			
			
      P56828
      
			      		
		
      
		
      
			
			
      GeneID
      
			      		
			
			
      100144750
      
			      		
		
      
		
      
			
			
      Source
      
			      		
			
			
      E.coli-derived ovine Interferon-tau protein, Cys24-Pro195 
      
			      		
		
      
		
      
			
			
      Molecular Weight
      
			      		
			
			
      Approximately 19.9 kDa.
      
			      		
		
      
		
      
			
			
      AA Sequence
      
			      		
			
			
      CYLSRKLMLD ARENLKLLDR MNRLSPHSCL QDRKDFGLPQ EMVEGDQLQK DQAFPVLYEM LQQSFNLFYT EHSSAAWDTT LLEQLCTGLQ QQLDHLDTCR GQVMGEEDSE LGNMDPIVTV KKYFQGIYDY LQEKGYSDCA WEIVRVEMMR ALTVSTTLQK RLTKMGGDLN SP
      
			      		
		
      
		
      
			
			
      Tag
      
			      		
			
			
      None
      
			      		
		
      
		
      
			
			
      Physical Appearance
      
			      		
			
			
      Sterile Filtered White lyophilized (freeze-dried) powder.
      
			      		
		
      
		
      
			
			
      Purity
      
			      		
			
			
      > 97 % by SDS-PAGE and HPLC analyses.
      
			      		
		
      
		
      
			
			
      Biological Activity
      
			      		
			
			
      Fully biologically active when compared to IFN-alpha. The specific activity determined by a viral resistance assay is no less than 1.0 × 107 IU/mg.
      
			      		
		
      
		
      
			
			
      Endotoxin
      
			      		
			
			
      < 0.1 EU per 1μg of the protein by the LAL method.
      
			      		
		
      
		
      
			
			
      Formulation
      
			      		
			
			
      Lyophilized from a 0.2 µm filtered concentrated solution in PBS, pH 7.4.
      
			      		
		
      
		
      
			
			
      Reconstitution
      
			      		
			
			
      We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20°C. Further dilutions should be made in appropriate buffered solutions.
      
			      		
		
      
	      

      


       
      


      Shipping and Storage
      


      The products are shipped with ice pack and can be stored at -20℃ to -80℃ for 1 year.
      


      Recommend to aliquot the protein into smaller quantities when first used and avoid repeated freeze-thaw cycles
      


       
      


      Cautions
      


      1. Avoid repeated freeze-thaw cycles.
      


      2. For your safety and health, please wear lab coats and disposable gloves for operation.
      


      3. For research use only.
      


       
      


       HB220511 
      

         
       
       
       
       
       
       
       
      400-6111-883