5419
Since promoter elements controlling collagenase transcription in monocytic cells have not been previously defined, we sought to delineate responsive cis-acting elements of the collagenase promoter in transiently transfected human (U937) and murine (J774) monocytic cell lines .
 ( DNA: collagenase promoter, None) , ( DNA: cis-acting elements, None) , ( protein: collagenase, None) , ( protein: collagenase, 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:
 ( DNA: collagenase promoter, None) , ( DNA: cis-acting elements, None) , ( protein: collagenase, None) , ( protein: collagenase, None) 