13858
Stimulation of PPARgamma with troglitazone or 15-deoxy-delta12,14-prostaglandin J2 in human monocyte-derived macrophages inhibited MMP-9 gelatinolytic activity in a concentration-dependent fashion as revealed by zymography .
 ( protein: PPARgamma, None) , ( cell type: monocyte-derived macrophages, None) , ( protein: MMP-9, 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: PPARgamma, None) , ( cell type: monocyte-derived macrophages, None) , ( protein: MMP-9, None) 