Document Detail


Coordinate involvement of cysteine protease and nuclease in the executive phase of plant apoptosis.
MedLine Citation:
PMID:  15589846     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We have developed an oat cell-free apoptosis system to investigate the execution mechanisms of plant apoptosis. Cell extracts derived from oat tissues undergoing toxin (victorin)-induced apoptosis caused nuclear collapse and internucleosomal DNA fragmentation in isolated nuclei. Pharmacological studies revealed that cysteine protease, which is E-64-sensitive but insensitive to caspase-specific inhibitors, is a crucial component in the morphological change of isolated nuclei, and that nuclease and the cysteine protease act cooperatively to induce the apoptotic DNA laddering. Interestingly, this finding is contrasted with those in well-studied animal cell-free systems in which an apoptotic endonuclease is solely responsible for the DNA fragmentation.
Authors:
Koh Kusaka; Yasuomi Tada; Teppei Shigemi; Masaru Sakamoto; Hitoshi Nakayashiki; Yukio Tosa; Shigeyuki Mayama
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  FEBS letters     Volume:  578     ISSN:  0014-5793     ISO Abbreviation:  FEBS Lett.     Publication Date:  2004 Dec 
Date Detail:
Created Date:  2004-12-13     Completed Date:  2005-01-28     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0155157     Medline TA:  FEBS Lett     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  363-7     Citation Subset:  IM    
Affiliation:
Graduate School of Science and Technology, Kobe University, Kobe 657-8501, Japan.
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MeSH Terms
Descriptor/Qualifier:
Apoptosis / drug effects,  physiology*
Aurintricarboxylic Acid / pharmacology
Avena sativa / cytology,  enzymology*,  metabolism
Cell Extracts
Cell Nucleus / drug effects
Cell-Free System
Cysteine Endopeptidases / drug effects,  metabolism*,  pharmacology
Cysteine Proteinase Inhibitors / pharmacology
DNA, Plant / drug effects
Drug Interactions
Endonucleases / metabolism*,  pharmacology
Leucine / analogs & derivatives*,  pharmacology
Protein Biosynthesis / drug effects
Toxins, Biological / pharmacology
Chemical
Reg. No./Substance:
0/Cell Extracts; 0/Cysteine Proteinase Inhibitors; 0/DNA, Plant; 0/Toxins, Biological; 4431-00-9/Aurintricarboxylic Acid; 61-90-5/Leucine; 66701-25-5/E 64; EC 3.1.-/Endonucleases; EC 3.4.22.-/Cysteine Endopeptidases

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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