7923
The cyclin-dependent kinase ( cdk ) inhibitor p21(WAF1/CIP1) has a vitamin D3-responsive element ( VDRE ) in its promoter , and 1,25(OH)2D3 enhances the expression of p21(WAF1/CIP1) and induces differentiation of selected myeloid leukemic cell lines .
 ( protein: cyclin-dependent kinase ( cdk ) inhibitor, None) , ( protein: p21(WAF1/CIP1), None) , ( protein: p21(WAF1/CIP1), None) , ( protein: cyclin-dependent kinase, None) , ( DNA: VDRE, None) , ( cell line: myeloid leukemic cell lines, None) , ( DNA: promoter, None) , ( DNA: vitamin D3-responsive element, None) , ( protein: cdk, 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: cyclin-dependent kinase ( cdk ) inhibitor, None) , ( protein: p21(WAF1/CIP1), None) , ( protein: p21(WAF1/CIP1), None) , ( protein: cyclin-dependent kinase, None) , ( DNA: VDRE, None) , ( cell line: myeloid leukemic cell lines, None) , ( DNA: promoter, None) , ( DNA: vitamin D3-responsive element, None) , ( protein: cdk, None) 