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Genes Identified That Enhance Tumor Cell Sensitivity to CTI's Cancer Drug Brostallicin
Date:4/20/2009

rence screen was performed in selected ovarian cancer cell lines. RNA interference is a cellular process that results in the targeted knockdown of specific genes. The current screen assayed the effect of over 7,000 individual gene knockdowns, representing the "druggable" genome, on brostallicin response.

The identified genes, representing unique contexts of vulnerability to brostallicin, converged on cellular concepts relating to DNA repair and chromosome modification. These findings were further extended and confirmed in breast cancer cell lines, wherein the knockdown of specific genes involved in these concepts, mentioned above, resulted in an increased response to brostallicin.

To substantiate the brostallicin response observed in the RNAi studies, drugs that target selected genetic targets were tested for synergistic activity in combination with brostallicin. The outcome of this validation work has identified important contexts and rational drug combinations that will be critical for the clinical development of brostallicin.

To review the poster and see more detailed information about the study, please go to http://www.celltherapeutics.com/investor_updates.

About Brostallicin

Brostallicin, a novel synthetic second-generation DNA minor groove binder, has shown potent cancer killing activity and has demonstrated synergism in combination with standard cytotoxic agents as well as with newer targeted therapies in preclinical experimental tumor models. Brostallicin binds covalently to DNA within the DNA minor groove, interfering with DNA division and leading to tumor cell death. More than 200 patients have been treated with brostallicin in single-agent and combination studies. Brostallicin had predictable and predominantly
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SOURCE Cell Therapeutics, Inc.
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