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Publications
Identification of Chemical Inhibitors to Human Tissue Transglutaminase by Screening Existing Drug Libraries

Chemistry and Biology

Lai TS, Liu Y, Tucker T, Daniel KR, Sane DC, Toone E, Burke JR, Strittmatter WJ, Greenberg CS
Chemistry and Biology - vol. 15 969-978 (2008)

Human tissue transglutaminase (TGM2) is a calcium-dependent crosslinking enzyme involved in the posttranslational modification of intra- and extracellular proteins and implicated in several neurodegenerative diseases. To find specific inhibitors to TGM2, two structurally diverse chemical libraries (LOPAC and Prestwick) were screened. We found that ZM39923, a Janus kinase inhibitor, and its metabolite ZM449829 were the […]

Publications
High-throughput flow cytometry to detect selective inhibitors of ABCB1, ABCC1, and ABCG2 transporters.

Assay and drug development technologies

Ivnitski-Steele I, Larson RS, Lovato DM, Khawaja HM, Winter SS, Oprea TI, Sklar LA, Edwards BS
Assay and drug development technologies - vol. 6 263-276 (2008)

Up-regulation of pump (transporter) expression and selection of resistant cancer cells result in cancer multidrug resistance to diverse substrates of these transporters. While more than 48 members of the ATP binding cassette (ABC) transporter superfamily have been identified, up to now only three human ABC transporters-ABCB1, ABCC1, and ABCG2-have unambiguously been shown to contribute to […]

Publications
A high-content chemical screen identifies ellipticine as a modulator of p53 nuclear localization

Apoptosis

Xu GW, Mawji IA, Macrae CJ, Koch CA, Datti A, Wrana JL, Dennis JW, Schimmer AD
Apoptosis - vol. 13 413-422 (2008)

p53 regulates apoptosis and the cell cycle through actions in the nucleus and cytoplasm. Altering the subcellular localization of p53 can alter its biological function. Therefore, small molecules that change the localization of p53 would be useful chemical probes to understand the influence of subcellular localization on the function of p53. To identify such molecules, […]

Publications
Quantitative high-throughput screen identifies inhibitors of the Schistosoma mansoni redox cascade

PLoS Neglected Tropical Diseases

Simeonov A, Jadhav A, Sayed AA, Wang Y, Nelson ME, Thomas CJ, Inglese J, Williams DL, Austin CP
PLoS Neglected Tropical Diseases - vol. 2 (2008)

Schistosomiasis is a tropical disease associated with high morbidity and mortality, currently affecting over 200 million people worldwide. Praziquantel is the only drug used to treat the disease, and with its increased use the probability of developing drug resistance has grown significantly. The Schistosoma parasites can survive for up to decades in the human host […]

Publications
Dual-fluorophore quantitative high-throughput screen for inhibitors of BRCT-phosphoprotein interaction

Analytical Biochemistry

Simeonov A, Yasgar A, Jadhav A, Lokesh GL, Klumpp C, Michael S, Austin CP, Natarajan A, Inglese J
Analytical Biochemistry - vol. 375 60-70 (2008)

Finding specific small-molecule inhibitors of protein-protein interactions remains a significant challenge. Recently, attention has grown toward « hot spot » interactions where binding is dominated by a limited number of amino acid contacts, theoretically offering an increased opportunity for disruption by small molecules. Inhibitors of the interaction between BRCT (the C-terminal portion of BRCA1, a key tumor […]

Publications
Modulation of influenza virus replication by alteration of sodium ion transport and protein kinase C activity

Antiviral Research

Hoffmann HH, Palese P, Shaw ML
Antiviral Research - vol. 80 124-134 (2008)

In recent years, increasing levels of resistance to the four FDA-approved anti-influenza virus drugs have been described and vaccine manufacturers have experienced demands that exceed their capacity. This situation underlines the urgent need for novel antivirals as well as innovations in vaccine production in preparation for the next influenza epidemic. Here we report the development […]

Publications
A quantitative high-throughput screen identifies potential epigenetic modulators of gene expression

Analytical Biochemistry

Johnson RL, Huang W, Jadhav A, Austin CP, Inglese J, Martinez ED
Analytical Biochemistry - vol. 375 237-248 (2008)

Epigenetic regulation of gene expression is essential in embryonic development and contributes to cancer pathology. We used a cell-based imaging assay that measures derepression of a silenced green fluorescent protein (GFP) reporter to identify novel classes of compounds involved in epigenetic regulation. This locus derepression (LDR) assay was screened against a 69,137-member chemical library using […]

Publications
Genetic and chemical modifiers of a CUG toxicity model in Drosophila

PLoS ONE

Garcia-Lopez A, Monferrer L, Garcia-Alcover I, Vicente-Crespo M, Alvarez-Abril MC, Artero RD
PLoS ONE - vol. 3 (2008)

Non-coding CUG repeat expansions interfere with the activity of human Muscleblind-like (MBNL) proteins contributing to myotonic dystrophy 1 (DM1). To understand this toxic RNA gain-of-function mechanism we developed a Drosophila model expressing 60 pure and 480 interrupted CUG repeats in the context of a non-translatable RNA. These flies reproduced aspects of the DM1 pathology, most […]

Publications
High-Throughput Screening Assay for the Identification of Compounds Regulating Self-Renewal and Differentiation in Human Embryonic Stem Cells

Cell Stem Cell

Desbordes SC, Placantonakis DG, Ciro A, Socci ND, Lee G, Djaballah H, Studer L
Cell Stem Cell - vol. 2 602-612 (2008)

High-throughput screening (HTS) of chemical libraries has become a critical tool in basic biology and drug discovery. However, its implementation and the adaptation of high-content assays to human embryonic stem cells (hESCs) have been hampered by multiple technical challenges. Here we present a strategy to adapt hESCs to HTS conditions, resulting in an assay suitable […]

Publications
Tiratricol neutralizes bacterial endotoxins and reduces lipopolysaccharide-induced TNF-α production in the cell

Chemical Biology and Drug Design

Cascales L, Mas-Moruno C, Tamborero S, Aceña JL, Sanz-Cervera JF, Fustero S, Cruz LJ, Mora P, Albericio F, Pérez-Payá E
Chemical Biology and Drug Design - vol. 72 320-328 (2008)

The screening of a commercially available library of compounds has proved a successful strategy for the identification of a lead compound in a drug discovery programme. Here, we analysed 880 off-patent drugs, which initially comprised the Prestwick Chemical library, as sources of bacterial endotoxin neutralizers. We identified 3,3′,5-triiodo-thyroacetic acid (tiratricol) as a non-antibacterial compound that […]