Journal
DRUG DISCOVERY TODAY
Volume 7, Issue 15, Pages 815-822Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S1359-6446(00)01910-2
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Microarray technology allows the simultaneous analysis of thousands of parameters within a single experiment. Microspots of capture molecules are immobilised in rows and columns onto a solid support and exposed to samples containing the corresponding binding molecules. Readout systems based on fluorescence, chemiluminescence, mass spectrometry, radioactivity or electrochemistry can be used to detect complex formation within each microspot. Such miniaturised and parallelised binding assays can be highly sensitive, and the extraordinary power of the method is exemplified by array-based gene expression analysis. In these systems, arrays containing immobilised DNA pro zies are exposed to complementary targets and the degree of hybridisation is measured. Recent developments in the field of protein microarrays show applications for enzyme-substrate, DNA-protein and different types of protein-protein interactions. This article discusses theoretical advantages and limitations of any miniaturised capture-molecule-ligand assay system and discusses how the use of protein microarrays will change diagnostic methods and genome and proteome research.
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