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Published in: Investigational New Drugs 4/2011

01-08-2011 | PRECLINICAL STUDIES

Effects of the microtubule stabilizing agent peloruside A on the proteome of HL-60 cells

Authors: Anja Wilmes, Pisana Rawson, Lifeng Peng, Danyl McLauchlan, Peter T. Northcote, T. William Jordan, John H. Miller

Published in: Investigational New Drugs | Issue 4/2011

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Summary

Peloruside A, isolated from the marine sponge Mycale hentscheli, has a similar mechanism of action to paclitaxel (Taxol®), a drug used clinically to treat tumors of the breast, ovary and lung. Paclitaxel and peloruside stabilize the polymerized form of tubulin and arrest cells in G2/M of the cell cycle. We have therefore used two-dimensional electrophoresis of proteins to examine the effect of peloruside A on the human HL-60 promyeloid leukemic cell line. Our goals included investigation whether affected proteins could be mapped onto pathways that predicted the cellular effects of this compound. In response to 100 nM peloruside A treatment for 24 h, seventeen identified proteins showed significant change in abundance with fourteen increases and three decreases. Use of Ingenuity Pathways Analysis confirmed that peloruside A affected pathways consistent with the known effects on microtubules and apoptosis. Our results also indicate a potential role of c-Myc in the cellular actions of peloruside consistent with an induction of aneuploidy seen at low concentrations of peloruside.
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Metadata
Title
Effects of the microtubule stabilizing agent peloruside A on the proteome of HL-60 cells
Authors
Anja Wilmes
Pisana Rawson
Lifeng Peng
Danyl McLauchlan
Peter T. Northcote
T. William Jordan
John H. Miller
Publication date
01-08-2011
Publisher
Springer US
Published in
Investigational New Drugs / Issue 4/2011
Print ISSN: 0167-6997
Electronic ISSN: 1573-0646
DOI
https://doi.org/10.1007/s10637-010-9387-5

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