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A Rapid High-throughput Method for Mapping Ribonucleoproteins (RNPs) on Human pre-mRNA
Published on: December 2, 2009
The estimation of mRNA content by poly(u) hybridization
1Division of Biological and Environmental Sciences, The Hatfield Polytechnic, Hatfield, Hertfordshire, England.
Methods in Molecular Biology (Clifton, N.J.)
|March 5, 2011
Summary
This study introduces a sensitive method to measure messenger RNA (mRNA) using its poly(adenylic) acid tail. The technique involves hybridizing poly(A) with radiolabeled poly(U) for accurate quantification.
Area of Science:
- Molecular Biology
- Biochemistry
- Genetics
Background:
- The 3' end of most eukaryotic messenger RNA (mRNA) molecules contains a poly(adenylic) acid [poly(A)] sequence.
- Poly(A) plays crucial roles in mRNA stability, export, and translation.
- Accurate estimation of mRNA content is vital for understanding gene expression.
Purpose of the Study:
- To develop a sensitive and quantitative method for estimating mRNA content in nucleic acid samples.
- To utilize the poly(A) tail of mRNA for detection and quantification.
Main Methods:
- Employing RNA-RNA hybridization between poly(A) sequences in RNA samples and poly(U).
- Using tritium-labeled poly(U) ((3)H-poly(U)) for detection.
- Removing excess (3)H-poly(U) via ribonuclease treatment.
- Collecting and quantifying the RNA-RNA hybrids using trichloroacetic acid (TCA) precipitation and scintillation counting.
Main Results:
- The developed technique can accurately quantify poly(A) content by comparing experimental results with known poly(A) standards.
- The method demonstrates high sensitivity, capable of detecting less than 10(-10)g of poly(A).
Conclusions:
- A sensitive and reliable method for estimating mRNA content based on its poly(A) tail has been established.
- This technique offers a valuable tool for molecular biology research, enabling precise measurement of mRNA levels.
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