6189
TNFalpha is a rapid activator of IL-8 gene expression by U937 , producing a 50-fold induction of mRNA within 1 hour of treatment.
 ( cell line: U937, None) , ( DNA: IL-8 gene, None) , ( RNA: mRNA, None) , ( protein: TNFalpha, None) , ( protein: IL-8, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( cell line: U937, None) , ( DNA: IL-8 gene, None) , ( RNA: mRNA, None) , ( protein: TNFalpha, None) , ( protein: IL-8, None) 