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Published in: Cancer Chemotherapy and Pharmacology 6/2009

01-11-2009 | Original Article

In vitro assessment of novel transcription inhibitors and topoisomerase poisons in rhabdomyosarcoma cell lines

Authors: Steven J. Wolf, Laurence P. G. Wakelin, Zhicong He, Bernard W. Stewart, Daniel R. Catchpoole

Published in: Cancer Chemotherapy and Pharmacology | Issue 6/2009

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Abstract

Purpose

Rhabdomyosarcoma (RMS) is the most common soft tissue sarcoma in children. Current chemotherapy regimes include the topoisomerase II poison etoposide and the transcription inhibitor actinomycin D. Poor clinical response necessitate identification of new agents to improve patient outcomes.

Methods

We assessed the in vitro cytotoxicity (MTT assay) of DNA intercalating agents in five established human RMS cell lines. These include novel classes of transcription inhibitors and topoisomerase poisons, previously shown to have potential as anti-cancer agents.

Results

Amongst the former agents, bisintercalating bis(9-aminoacridine-4-carboxamides) linked through the 9-position, and bis(phenazine-1-carboxamides) linked via their side chains, are compared with established transcription inhibitors. Amongst the latter, monofunctional acridine-4-carboxamides related to N-[2-(dimethylamino)ethyl]acridine-4-carboxamide, DACA, are compared with established topoisomerase poisons.

Conclusions

Our findings specifically highlight the topoisomerase poison 9-amino-DACA, its 5-methylsulphone derivative, AS-DACA, and the bis(phenazine-1-carboxamide) transcription inhibitor MLN944/XR5944, currently in phase I trial, as candidates for further research into new agents for the treatment of RMS.
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Metadata
Title
In vitro assessment of novel transcription inhibitors and topoisomerase poisons in rhabdomyosarcoma cell lines
Authors
Steven J. Wolf
Laurence P. G. Wakelin
Zhicong He
Bernard W. Stewart
Daniel R. Catchpoole
Publication date
01-11-2009
Publisher
Springer-Verlag
Published in
Cancer Chemotherapy and Pharmacology / Issue 6/2009
Print ISSN: 0344-5704
Electronic ISSN: 1432-0843
DOI
https://doi.org/10.1007/s00280-009-0962-4

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