Staphylococcal delta toxin is a protein capable of rapidly disrupting cell membranes. Synchronized populations of 3T3 mouse fibroblasts in mitosis and early G1 phases of the cell cycle exhibit resistance to delta toxin at concentrations cytolytic to interphase cells. Similar results were obtained with HeLa cells grown attached or in suspension culture. Increased resistance appears to result from structural or biochemical features other than cell rounding or detachment. Delta toxin stimulated significantly less cellular phospholipase A2 (a potentially lytic enzyme activity) in mitotic 3T3 cells than in interphase cells.
|Original language||English (US)|
|Number of pages||8|
|Journal||Biochemical and Biophysical Research Communications|
|State||Published - Jun 16 1980|
Bibliographical noteFunding Information:
ACKNOWLEDGMENTS: Dr. A.W. Bernheimer; and the technical by National Cancer National Research We gratefully acknowledge a gift of delta toxin from a gift of mithramycin from Mr. N. Belcher, Pfizer Inc.; assistance of Mr. J. T. Trotter. This work was supported Institute, USPHS, the Cystic Fibrosis Foundation and the Council Canada.
Copyright 2014 Elsevier B.V., All rights reserved.