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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: Jul 8, 2026

Single-cell Profiling of Developing and Mature Retinal Neurons
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Single-cell Profiling of Developing and Mature Retinal Neurons

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Microarrays of cells expressing defined cDNAs.

J Ziauddin1, D M Sabatini

  • 1Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA.

Nature
|May 3, 2001
PubMed
Summary

This study introduces a novel microarray system for rapid gene function analysis and drug target identification. The system uses transfected mammalian cells to screen gene products, accelerating discovery in molecular biology.

Area of Science:

  • Molecular Biology
  • Genomics
  • Cell Biology

Background:

  • Genome projects are identifying numerous genes, necessitating efficient functional analysis.
  • Identifying gene products with specific properties is a key challenge in biological research.

Purpose of the Study:

  • To develop a microarray-driven gene expression system for parallel functional analysis of gene products.
  • To demonstrate the utility of this system for identifying drug targets and discovering novel gene functions.

Main Methods:

  • Mammalian cells were cultured on glass slides printed with complementary DNAs (cDNAs) in expression vectors.
  • Localized DNA uptake by cells created microarrays of transfected cells expressing defined cDNAs.
  • Screening of 192 different cDNA-expressing cell microarrays was performed.

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Last Updated: Jul 8, 2026

Single-cell Profiling of Developing and Mature Retinal Neurons
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Published on: April 19, 2012

Single-cell Gene Expression Profiling Using FACS and qPCR with Internal Standards
10:50

Single-cell Gene Expression Profiling Using FACS and qPCR with Internal Standards

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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations
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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations

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Main Results:

  • The system successfully identified proteins involved in tyrosine kinase signaling, apoptosis, and cell adhesion.
  • Distinct subcellular distributions of identified proteins were observed.
  • The approach served as an alternative to protein microarrays for drug target identification.

Conclusions:

  • The developed microarray system enables high-throughput functional genomics and expression cloning.
  • This technology accelerates the discovery of gene functions and potential therapeutic targets.
  • The system is versatile for identifying proteins with diverse cellular roles and properties.