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DNA Microarrays

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...

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Development of multiplexed microarray binding assays for high-throughput drug discovery.

Yulong Hong¹, Li Liu, Sadashiva Pai

¹Science and Technology Division, Corning, Inc., Corning, NY 14831, USA.

Assay and Drug Development Technologies

|July 17, 2009

Summary

This summary is machine-generated.

This study introduces a novel microarray assay for multiplexed analysis of G protein-coupled receptor systems. This high-throughput screening method streamlines drug discovery by combining hit identification with target profiling.

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Area of Science:

Biochemistry
Pharmacology
Drug Discovery

Background:

Drug discovery requires efficient methods for both primary hit identification and target profiling.
Current processes can be streamlined by integrating these two crucial assay types.

Purpose of the Study:

To develop a microarray-based ligand binding assay for multiplexed analysis of G protein-coupled receptor (GPCR) systems.
To create a high-throughput screening (HTS)-compatible platform for drug discovery.

Main Methods:

Developed a microarray assay by pin-printing seven different GPCRs onto a specially coated microplate.
Optimized membrane protein deposition and established generic assay conditions for simultaneous receptor analysis.
Assayed the system using a cocktail of fluorescent ligands and validated results with known ligands and displacing compounds.

Main Results:

The multiplexed assay successfully generated valid pharmacological data, including K(i) values for specific ligands.
The assay demonstrated comparable potency ranking to conventional simplexed assays.
A 40-compound mini-screen confirmed the assay's accuracy in identifying valid drug discovery hits.

Conclusions:

The developed microarray assay is suitable for routine GPCR profiling tasks.
This platform shows significant potential for high-throughput multiplexed drug discovery.
Integrating hit identification and target profiling assays can accelerate the drug discovery pipeline.