From owner-cellbiol@net.bio.net Tue Feb 18 22:00:00 1997 Path: biosci!MCHIP00.MED.NYU.EDU!alperd01 From: alperd01@MCHIP00.MED.NYU.EDU (Deborah Alpert) Newsgroups: bionet.cellbiol Subject: PARP cleavage and apoptosis Date: 18 Feb 1997 21:27:46 -0800 Organization: NYU School of Medicine Lines: 12 Sender: daemon@net.bio.net Distribution: world Message-ID: <330A3BBB.4E78@popmail.med.nyu.edu> Reply-To: alperd01@mchip00.med.nyu.edu NNTP-Posting-Host: net.bio.net PARP (poly ADP ribose polymerase) cleavage is downstream of ICE-like protease action in the induction of apoptosis. However, does PARP cleavage (as demonstrated by Western blot) necessarily imply apoptosis as the mechanism of cell death? Does a time course demonstration of the absence of PARP cleavage (spanning a period of time when cell death is morphologically observed) exclude apoptosis? Also, any tips on detecting PARP cleavage, especially using the new anti-PARP antibodies from Boehringer, would be greatly appreciated. Thanks in advance, Debbie Alpert NYU School of Medicine .