alexa Identification of tumor and invasion suppressor gene modulators in bladder cancer by different classes of histone deacetylase inhibitors using reverse phase protein arrays.
Genetics & Molecular Biology

Genetics & Molecular Biology

Gene Technology

Author(s): Gould JJ, Kenney PA, RiegerChrist KM, Silva Neto B, Wszolek MF,

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Abstract PURPOSE: We assessed the ability of different classes of histone deacetylase inhibitors to target tumor and invasive suppressor genes in a panel of bladder carcinoma cell lines using reverse phase protein arrays. MATERIALS AND METHODS: Three poorly, moderately and highly invasive cell lines were exposed to histone deacetylase inhibitors, trichostatin A, apicidin, valproic acid (Sigma) and MS-275 (AXXORA) for 0 to 36 hours. Lysates were harvested and arrayed in a 10-fold dilution series in duplicate. Data points were collected and analyzed using a concentration interpolation methodology after normalization. RESULTS: Protein expression profiles revealed up-regulation of gamma-catenin in highly invasive lines, and alpha-catenin in moderately and highly invasive lines after exposure to all histone deacetylase inhibitors, apicidin and MS-275, respectively. Gelsolin was up-regulated in poorly and moderately invasive lines after exposure to all histone deacetylase inhibitors. Desmoglein was down-regulated in poorly and moderately invasive cell lines by all 4 histone deacetylase inhibitors, in addition to decreased FAK (Transduction Laboratories) expression in moderately and highly invasive lines exposed to valproic acid and MS-275. CONCLUSIONS: Different histone deacetylase inhibitor classes have the potential to modulate tumor and invasive suppressor gene expression, identifying histone deacetylase inhibitors as potential therapeutic agents for bladder cancer. Reverse phase protein arrays enable high throughput screening of multiple compounds to assess the expression profile of specific protein groups targeted for therapy. Copyright 2010 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved. This article was published in J Urol and referenced in Gene Technology

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