Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

Cytochrome c release and caspase activation during menadione‐induced apoptosis in plants

Cytochrome c release and caspase activation during menadione‐induced apoptosis in plants We report here the detection of the release of cytochrome c from mitochondria into the cytosol during menadione‐induced apoptosis in tobacco protoplasts. Western blot analysis indicated that the caspase specific inhibitors AC‐DEVD‐CHO (Ac‐Asp‐Glu‐Val‐Asp‐aldehyde) and AC‐YVAD‐CHO (N‐acetyl‐Try‐Val‐Ala‐aspartinal) inhibited the degradation of a caspase 3 specific substrate PARP (poly(ADP‐ribose) polymerase), and they had no effect on the release of cytochrome c. Further study showed that menadione could not induce apoptosis of mouse liver nuclei in tobacco cytosol extract containing no mitochondria. However, when cytochrome c or mitochondria was added into the cytosol extract, apoptosis of mouse liver nuclei and the degradation of PARP could both be detected. The results provide strong evidence that menadione can induce apoptosis in tobacco protoplasts via the release of cytochrome c from mitochondria into the cytosol. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Febs Letters Wiley

Cytochrome c release and caspase activation during menadione‐induced apoptosis in plants

Febs Letters , Volume 462 (3) – Dec 3, 1999

Loading next page...
 
/lp/wiley/cytochrome-c-release-and-caspase-activation-during-menadione-induced-SvbI5iH9vD

References (24)

Publisher
Wiley
Copyright
© 2015 Federation of European Biochemical Societies
eISSN
1873-3468
DOI
10.1016/S0014-5793(99)01539-2
Publisher site
See Article on Publisher Site

Abstract

We report here the detection of the release of cytochrome c from mitochondria into the cytosol during menadione‐induced apoptosis in tobacco protoplasts. Western blot analysis indicated that the caspase specific inhibitors AC‐DEVD‐CHO (Ac‐Asp‐Glu‐Val‐Asp‐aldehyde) and AC‐YVAD‐CHO (N‐acetyl‐Try‐Val‐Ala‐aspartinal) inhibited the degradation of a caspase 3 specific substrate PARP (poly(ADP‐ribose) polymerase), and they had no effect on the release of cytochrome c. Further study showed that menadione could not induce apoptosis of mouse liver nuclei in tobacco cytosol extract containing no mitochondria. However, when cytochrome c or mitochondria was added into the cytosol extract, apoptosis of mouse liver nuclei and the degradation of PARP could both be detected. The results provide strong evidence that menadione can induce apoptosis in tobacco protoplasts via the release of cytochrome c from mitochondria into the cytosol.

Journal

Febs LettersWiley

Published: Dec 3, 1999

Keywords: ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;

There are no references for this article.