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Related Experiment Videos

Simultaneous quantitative and allele-specific expression analysis with real competitive PCR.

Chunming Ding1, Esther Maier, Adelbert A Roscher

  • 1Bioinformatics Program and Center for Advanced Biotechnology, Boston University, Boston, MA 02215, USA. cmding@bu.edu

BMC Genetics
|May 7, 2004
PubMed
Summary

We developed a real competitive PCR method to precisely measure allele-specific gene expression. This technique quantifies expression levels for individual alleles, offering high precision and throughput for genetic studies.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Biotechnology

Background:

  • Allelic expression in diploid organisms can vary due to factors like X chromosome inactivation and gene imprinting.
  • Imbalanced allelic expression is common in humans and follows Mendelian inheritance patterns.
  • Accurate methods are needed to analyze allele-specific gene expression.

Purpose of the Study:

  • To present a novel method for allele-specific expression analysis using real competitive PCR.
  • To enable precise quantification of individual allele expression levels.

Main Methods:

  • Utilizes real competitive PCR with a transcribed mutation (e.g., single nucleotide polymorphism) as a marker.
  • Employs a synthetic mutation in a competitor molecule near a natural mutation site in cDNA.

Related Experiment Videos

  • Amplifies cDNA from both alleles and the competitor using PCR.
  • Performs base extension reactions to generate distinct oligonucleotides for each allele and the competitor.
  • Analyzes products using MALDI-TOF mass spectrometry to determine ratios based on peak areas.

    • Main Results:

    • Successfully developed and demonstrated a real competitive PCR method for allele-specific expression analysis.
    • The method uses transcribed mutations (SNPs) and a competitor molecule for precise amplification.
    • MALDI-TOF mass spectrometry allows for accurate quantification of allele expression ratios.

    Conclusions:

    • The presented technique offers high precision and throughput for quantifying absolute expression levels of individual gene alleles.
    • This method provides a valuable tool for various biological studies involving allele-specific gene expression analysis.