8052
We found that they reduced the initial interleukin-1beta mRNA transcription rate through prevention of degradation of inhibitor-kappaB alpha .
 ( RNA: interleukin-1beta mRNA, None) , ( protein: inhibitor-kappaB alpha, 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:
 ( RNA: interleukin-1beta mRNA, None) , ( protein: inhibitor-kappaB alpha, None) 