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Related Experiment Videos

Microarray image scanning.

Latha Ramdas1, Wei Zhang

  • 1Cancer Genomics Core Laboratory, University of Texas, M.D. Anderson Cancer Center, Houston, USA.

Methods in Molecular Biology (Clifton, N.J.)
|May 25, 2006
PubMed
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This chapter details microarray technology for gene expression measurement. It covers imaging processes and protocols for analyzing thousands of genes simultaneously using fluorescent-labeled targets and laser-based scanners.

Area of Science:

  • Molecular Biology
  • Genomics
  • Biotechnology

Background:

  • Microarrays are a common high-throughput technique for measuring gene expression.
  • This method allows simultaneous measurement of thousands of genes.

Purpose of the Study:

  • To discuss the imaging process in microarray technology.
  • To present protocols for gene expression analysis using microarrays.

Main Methods:

  • Utilizes complementary DNA (cDNA) targets immobilized on solid surfaces (membranes or glass).
  • Hybridization with fluorescent-labeled target samples on glass arrays.
  • Detection of fluorescence intensities using laser or white-light sources and imaging devices (photomultiplier tubes or CCD cameras).

Main Results:

Related Experiment Videos

  • Fluorescence intensities directly correlate with gene expression levels.
  • Laser-based scanners are employed for image acquisition in laboratories.

Conclusions:

  • Microarray technology, particularly with cDNA targets, is a well-developed method for high-throughput gene expression analysis.
  • The chapter focuses on the critical imaging step and ongoing protocol development for enhanced accuracy and efficiency.