Array of Informatics: Applications in Modern Research

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Abstract
The advent of microarray technology in the past decade has greatly enhanced gene expression studies and allowed for the acquisition of a vast amount of information simultaneously. Microarrays have been used in numerous scientific fields to identify new genes, to determine the transcriptional activity of cells, and to discover downstream targets of different loci. Recently, DNA microarrays have also been utilized in disease studies to determine outcomes at many levels including diagnosis, prognosis, and drug therapy. The promise of protein microarrays is to allow us to study the molecular interactions of protein, lipids, small molecules, and carbohydrates. They can be exploited to analyze a single protein pair interaction, to address changes in multiple protein levels as a response to treatment (i.e., drug or radiation), or in a pathological condition. Tissue microarrays allow the analysis of numerous tumor samples simultaneously. Finally, live cell-based microarrays provide an opportunity to study the function of the entire proteome en masse within living cells. However, these exciting new areas still have to overcome many inherent problems. In this review, we discuss novel microarray-based approaches that are in development and that have potential in applications for medicine, biotechnology, and basic research.