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Related Experiment Videos

Global single-cell cDNA amplification to provide a template for representative high-density oligonucleotide

Kazuki Kurimoto1, Yukihiro Yabuta, Yasuhide Ohinata

  • 1Laboratory for Mammalian Germ Cell Biology, Center for Developmental Biology, RIKEN Kobe Institute, 2-2-3 Minatojima-Minamimachi, Chuo-ku, Kobe 650-0047, Japan.

Nature Protocols
|April 5, 2007
PubMed
Summary
This summary is machine-generated.

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This study introduces a novel protocol for amplifying messenger RNA (mRNA) from single mammalian cells. This method enhances gene expression analysis using microarray technology, improving accuracy and reproducibility.

Area of Science:

  • Molecular Biology
  • Genomics
  • Biotechnology

Background:

  • Accurate gene expression profiling from single cells is crucial for understanding cellular heterogeneity.
  • Existing methods often suffer from poor representation and reproducibility, especially for low-abundance transcripts.

Purpose of the Study:

  • To develop a robust protocol for representative amplification of global messenger RNAs (mRNAs) from single mammalian cells.
  • To enable high-density oligonucleotide microarray analysis with improved accuracy and reproducibility.

Main Methods:

  • Single-cell lysis followed by cDNA synthesis using poly(dT)-tailed primers.
  • Exonuclease treatment to remove unreacted primer, followed by second-strand synthesis.
  • Independent, directional PCR amplification in four tubes, followed by recombination.

Related Experiment Videos

  • T7 promoter-tailed PCR amplification, gel purification, and final amplification.
  • Isothermal linear amplification using T7 RNA polymerase to synthesize cRNAs for microarray hybridization.

    • Main Results:

    • The protocol yields approximately 100 ng of cDNA products from a single cell.
    • Demonstrates superior representation and reproducibility of gene expression compared to conventional PCR protocols.
    • Effective for quantitative PCR and expressed sequence tag (EST) analyses.
    • Generates sufficient cDNA templates for over 80 microarray hybridizations.

    Conclusions:

    • The developed protocol provides a reliable method for single-cell mRNA amplification for microarray analysis.
    • Offers enhanced accuracy and reproducibility, particularly for genes with low expression levels.
    • Facilitates comprehensive gene expression profiling from individual mammalian cells.