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Related Experiment Videos

Quantitative RT-PCR for measuring gene expression

M C Riedy1, E A Timm, C C Stewart

  • 1Roswell Park Cancer Institute, Buffalo, NY.

Biotechniques
|January 1, 1995
PubMed
Summary
This summary is machine-generated.

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This study introduces a novel quantitative PCR method using an internal RNA competitive reference standard (RNA-CRS) for accurate gene expression measurement in single cells. This technique overcomes limitations of traditional methods, enabling precise analysis of mRNA in small cell populations.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Context:

  • Measuring mRNA expression is crucial for understanding cellular function.
  • Classical methods like Northern blotting are unsuitable for small cell populations.
  • Analyzing gene expression in rare or sorted cell subsets is often desired.

Purpose:

  • To develop a reliable method for quantitative gene expression analysis in single cells.
  • To eliminate subjectivity in reverse transcription PCR (RT-PCR) data.
  • To present a nonplasmid-based strategy for synthesizing an RNA competitive reference standard (RNA-CRS).

Summary:

  • A novel quantitative PCR strategy is presented using an RNA competitive reference standard (RNA-CRS).
  • The RNA-CRS is identical to the target mRNA sequence but lacks 80 bases, facilitating competitive PCR.

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  • The method involves a competitive reaction with a constant amount of wild-type mRNA and serially decreasing amounts of RNA-CRS, followed by analysis via gel electrophoresis and densitometry.

    • Impact:

    • Enables accurate gene expression measurement in single cells, overcoming limitations of traditional methods.
    • Provides a robust and objective approach for analyzing mRNA in heterogeneous cell populations.
    • Facilitates research requiring high-resolution gene expression profiling in limited cell samples.