7809
We report here the cleavage of the transcription factor SP1 in the human Burkitt lymphoma cell line BL60 during anti-IgM -induced apoptosis .
 ( protein: transcription factor, None) , ( protein: anti-IgM, None) , ( cell line: human Burkitt lymphoma cell line BL60, None) , ( protein: SP1, 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: transcription factor, None) , ( protein: anti-IgM, None) , ( cell line: human Burkitt lymphoma cell line BL60, None) , ( protein: SP1, None) 