Related Experiment Videos
Simple, sensitive and accurate method for the quantification of prothrombin mRNA by using competitive PCR
P K Grover1, A M Stapleton, K Miyazawa
1Urology Unit, Flinders Medical Centre, Bedford Park 5042, South Australia, Australia. pk.grover@flinders.edu.au
The Biochemical Journal
|May 5, 2001
Summary
A novel competitive PCR method accurately quantifies prothrombin (PT) mRNA in rat liver. This technique, validated with recombinant cDNA, offers a simple, sensitive approach for transcript analysis in various tissues.
Area of Science:
- Molecular Biology
- Biochemistry
Background:
- Accurate quantification of specific mRNA species is crucial for understanding gene expression.
- Existing methods may lack sensitivity or require large sample amounts.
Purpose of the Study:
- To develop and validate a quantitative competitive PCR (competitive PCR) method for prothrombin (PT) mRNA in rat hepatic tissues.
- To establish a reliable technique for measuring transcript levels in biological samples.
Main Methods:
- Competitive PCR utilizing non-homologous competitor cDNA with distinct size from target mRNA.
- Densitometric analysis of ethidium bromide-stained agarose gel electrophoresis bands.
- Generation of standard curves using recombinant cDNA and constant competitor amounts.
Main Results:
- A linear relationship was observed between target/competitor band intensity ratios and initial RNA amounts.
- Recombinant cDNA demonstrated identical behavior to reverse-transcribed cDNA in PCR.
- The median ratio of PT mRNA to beta-actin mRNA in rat liver was determined to be 0.37.
Conclusions:
- The developed competitive PCR method is simple, quick, sensitive, and requires minimal substrate.
- This technique is applicable for quantifying mRNA in both hepatic and non-hepatic tissues.
- The method provides accurate transcript quantification for gene expression studies.