Detection of activated Caspase-3 by a cleavage site-directed antiserum during naturally occurring DRG neurons apoptosis.

Abstract:

:We prepared a cleavage site-directed antiserum against Caspase-3 (anti-p20/17), which reacts with the p20/17 fragment (p20/17) activated by cleavage but not proCaspase-3 (p32), and examined the relationship between the activation of Caspase-3 and apoptosis. We identified p20/17-positive cells where cell death occurs naturally: interdigits of the forelimbs, small intestine epithelium, thymus, trigeminal ganglia, and dorsal root ganglia of mouse embryos. Withdrawal of nerve growth factor induced the appearance of p20/17-positive cells with DNA fragmentation in the culture of dorsal root ganglia neurons, while DNA fragmentation was detected in both p20/17-positive and -negative neurons in dorsal root ganglia of mouse embryos. These results suggest that not only activation of Caspase-3 but also other molecular mechanism play a role in the naturally occurring dorsal root ganglia apoptosis. Cleavage site-directed antisera against Caspases will be useful for the analysis of the molecular mechanism of naturally occurring apoptosis during development.

authors

Kouroku Y,Urase K,Fujita E,Isahara K,Ohsawa Y,Uchiyama Y,Momoi MY,Momoi T

doi

10.1006/bbrc.1998.8815

subject

Has Abstract

pub_date

1998-06-29 00:00:00

pages

780-4

issue

3

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(98)98815-5

journal_volume

247

pub_type

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