11040
Transcriptional induction of collagenase-1 in differentiated monocyte-like (U937) cells is regulated by AP-1 and an upstream C/EBP-beta site .
 ( protein: AP-1, None) , ( cell line: differentiated monocyte-like (U937) cells, None) , ( protein: collagenase-1, None) , ( DNA: upstream C/EBP-beta site, 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: AP-1, None) , ( cell line: differentiated monocyte-like (U937) cells, None) , ( protein: collagenase-1, None) , ( DNA: upstream C/EBP-beta site, None) 