4299
cAMP signaling inhibited Stat1 at several different levels, including suppression of DNA binding and down-regulation of Stat1 protein and mRNA levels .
 ( protein: Stat1, 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:
 ( protein: Stat1, None) 