Download A Practical Guide to Assay Development and High-Throughput by Taosheng Chen PDF

By Taosheng Chen

The advance of appropriate assays, the mixing of acceptable know-how, and the potent administration of the basic infrastructure are all serious to the good fortune of any high-throughput screening (HTS) pastime. even though, few scientists have the multidisciplinary adventure had to keep watch over all points of an HTS drug discovery undertaking. a realistic advisor to Assay improvement and High-Throughput Screening in Drug Discovery integrates the adventure of numerous specialists who supply basic and sensible counsel throughout quite a few occasions. The booklet first discusses assay advancements for very important goal sessions corresponding to protein kinases and phosphatases, proteases, nuclear receptors, G protein-coupled receptors, ion channels, and warmth surprise proteins. It subsequent examines assay advancements for mobilephone viability, apoptosis, and infectious ailments. The members discover the applying of rising applied sciences and platforms, together with image-based excessive content material screening, RNA interference, and first cells. eventually, they speak about the basic elements of the built-in HTS strategy, reminiscent of screening automation, compound library administration, the screening of ordinary items from botanical resources, and screening informatics. Designed to encourage researchers to carry additional advances to the sector, this quantity offers useful suggestions on easy methods to start up, validate, optimize, and deal with a bioassay meant to reveal huge collections of compounds. Drawing at the wisdom from specialists actively desirous about assay improvement and HTS, this can be a source that's either complete and targeted.

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Extra resources for A Practical Guide to Assay Development and High-Throughput Screening in Drug Discovery (Critical Reviews in Combinatorial Chemistry)

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Rasilez treats hypertension; ritonavir and saquinavir treat AIDS. Prominent examples of exopeptidases as drug targets are the dipeptidylpeptidase IV (DPPIV) serine protease for the treatment of type 2 diabetes and the serine proteases of the blood coagulation cascade, especially thrombin and factor Xa for the treatment of thrombosis (Turk, 2006). Several drugs inhibiting these serine proteases are on the market already (DPPIV inhibitors Januvia and Galvus; fXa inhibitor Xarelto) or in clinical development.

These protocols provide an excellent starting point for developing new assays. A general strategy for assay development might include the following steps: 1. Choose an appropriate readout technology. 2. Generate cell lines and enzymes, substrates. 3. Design a starting protocol based on prior literature or experimental information on substrate specificity; test the protocol for enzyme-based or ligand-stimulated activity and use reference inhibitors when possible. 4. Gain knowledge of kinetic and mechanistic parameters as guidelines for assay optimization.

In cell-based assays where the inhibitor is present for a long incubation time, such as with the BaF3 assay (discussed above), a slow allosteric inhibitor can be identified. However, with other faster readout cell-based assays, it may be necessary to include a long pre-incubation step to allow the compound to diffuse into the cell and bind to the target. Assay Development for Protein Kinases and Phosphatases 17 When working with purified enzymes, it can be useful to perform a close examination of their phosphorylation states and molecular masses.

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