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Updated: Jun 3, 2026
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Single-cell Gene Expression Profiling Using FACS and qPCR with Internal Standards
Published on: February 25, 2017
Analysis of gene expression by PCR.
1Centre for Molecular Biology and Biotechnology, The University of Queensland, Australia.
Methods in Molecular Biology (Clifton, N.J.)
|March 11, 2011
Summary
Polymerase chain reaction (PCR) offers a sensitive solution for gene expression analysis when traditional methods fail due to limited tissue or low transcript levels. This technique enables detection in minute samples, like single cells or mouse blastocysts.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- Gene expression studies require sufficient tissue and detectable transcript levels.
- Traditional methods like Northern blotting are limited by sample size and sensitivity.
- Analyzing gene expression in small tissues or low-abundance transcripts presents significant challenges.
Purpose of the Study:
- To highlight the utility of polymerase chain reaction (PCR) for gene expression analysis.
- To address the limitations of conventional methods in detecting low-abundance transcripts.
- To demonstrate PCR's applicability in scenarios with minimal biological material.
Main Methods:
- Utilizing the high sensitivity of polymerase chain reaction (PCR).
- Applying PCR to analyze gene expression in small tissue samples.
- Detecting gene transcripts present at very low concentrations.
Main Results:
- Polymerase chain reaction (PCR) successfully detects transcripts at levels as low as 1 copy/1000 cells.
- PCR enables gene expression analysis in extremely small samples, including single cells and mouse blastocysts.
- The sensitivity of PCR overcomes limitations faced by Northern blotting, RNase protection assays, and in situ hybridization.
Conclusions:
- Polymerase chain reaction (PCR) is a powerful and sensitive tool for studying gene expression.
- PCR provides a viable solution for analyzing gene expression in challenging samples, such as those from early embryonic development.
- The application of PCR significantly expands the possibilities for gene expression research in limited or scarce biological specimens.
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