Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Calmodulin antagonists sensitize cells to pseudomonas toxin

Calmodulin antagonists sensitize cells to pseudomonas toxin 10.1002/jcp.1041190104.abs L cells and mouse 3T3 cells, which are very sensitive to Pseudomonas aeruginosa exotoxin A (PEA), were protected with weak bases and low concentrations of monensin. BHK cells and a number of other cell lines which are much less sensitive to PEA were much less protected under these conditions. Trifluoperazine, dansylcadaverine, and several other calmodulin antagonists strongly sensitized BHK cells to the toxin whereas they did not affect the sensitivity of the mouse 3T3 and L cells. The sensitization of the BHK cells was counteracted by treatment with weak bases or low concentrations of monensin. Calmodulin antagonists also sensitized cells to toxin which had become inaccessible to antitoxin, indicating that the effect of the calmodulin antagonists is exerted on a process taking place after the toxin is endocytosed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Cellular Physiology Wiley

Calmodulin antagonists sensitize cells to pseudomonas toxin

Loading next page...
 
/lp/wiley/calmodulin-antagonists-sensitize-cells-to-pseudomonas-toxin-tZTSLn8GfN

References (40)

Publisher
Wiley
Copyright
Copyright © 1984 Wiley‐Liss, Inc.
ISSN
0021-9541
eISSN
1097-4652
DOI
10.1002/jcp.1041190104
pmid
6707099
Publisher site
See Article on Publisher Site

Abstract

10.1002/jcp.1041190104.abs L cells and mouse 3T3 cells, which are very sensitive to Pseudomonas aeruginosa exotoxin A (PEA), were protected with weak bases and low concentrations of monensin. BHK cells and a number of other cell lines which are much less sensitive to PEA were much less protected under these conditions. Trifluoperazine, dansylcadaverine, and several other calmodulin antagonists strongly sensitized BHK cells to the toxin whereas they did not affect the sensitivity of the mouse 3T3 and L cells. The sensitization of the BHK cells was counteracted by treatment with weak bases or low concentrations of monensin. Calmodulin antagonists also sensitized cells to toxin which had become inaccessible to antitoxin, indicating that the effect of the calmodulin antagonists is exerted on a process taking place after the toxin is endocytosed.

Journal

Journal of Cellular PhysiologyWiley

Published: Apr 1, 1984

There are no references for this article.