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Related Concept Videos

DNA Microarrays02:34

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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Related Experiment Video

Updated: Jun 13, 2026

Global Gene Expression Analysis Using a Zebrafish Oligonucleotide Microarray Platform
13:14

Global Gene Expression Analysis Using a Zebrafish Oligonucleotide Microarray Platform

Published on: August 10, 2009

Gene expression analysis with an integrated CMOS microarray by time-resolved fluorescence detection.

Ta-chien D Huang1, Sunirmal Paul, Ping Gong

  • 1Bioelectronic Systems Laboratory, Department of Electrical Engineering, Columbia University, New York, NY 10027, USA.

Biosensors & Bioelectronics
|April 16, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces a novel active microarray using integrated circuit technology for gene expression analysis. This innovation enables sensitive detection of gene activity in irradiated blood, paving the way for reliable clinical diagnostics.

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Bioengineering

Background:

  • DNA microarrays are powerful tools for gene expression studies.
  • Clinical applications require reliable and cost-effective microarray technology.
  • Existing methods often need external measurement instrumentation.

Purpose of the Study:

  • To report the first practical application of an active microarray utilizing integrated circuit technology.
  • To demonstrate a novel approach for gene expression biodosimetry.
  • To develop a reliable and cost-effective microarray for potential clinical use.

Main Methods:

  • Utilized an active microarray based on complementary metal-oxide-semiconductor (CMOS) integrated circuit technology.
  • Employed quantum dots as fluorescence labels for filterless, time-gated fluorescence detection.
  • Developed techniques for covalent attachment of DNA capture strands to the CMOS active microarrays.

Main Results:

  • Achieved 100-pM sensitivity in gene expression biodosimetry of irradiated human blood leucocytes.
  • Demonstrated filterless, time-gated fluorescence detection obviating external instrumentation.
  • Showcased potential for sensitivities approaching the hardware limit of less than 10 pM with improved surface chemistry.

Conclusions:

  • The developed active microarray represents a practical advancement in microarray technology.
  • This platform offers a reliable and potentially cost-effective solution for gene expression analysis.
  • The technology holds promise for diverse clinical applications, including biodosimetry and disease detection.