Multiplex Preamplification of cDNA for Gene Expression Analysis
Author Information
Author(s): Lourdes Mengual, Moisès Burset, Mercedes Marín-Aguilera, María José Ribal, Antonio Alcaraz
Primary Institution: Institut Clínic de Nefrologia i Urologia (ICNU), Hospital Clínic de Barcelona
Hypothesis
Can cDNA preamplification improve gene expression analysis from low RNA quantity samples?
Conclusion
cDNA preamplification using the TPAMMK is a reliable method for measuring gene expression in samples with low RNA quantities.
Supporting Evidence
- The mean cycle threshold decrement in preamplified samples was 3.85.
- A high correlation (mean r = 0.970) was found between gene expression measurements of non-preamplified and preamplified samples.
- The methodology was validated in genes from degraded RNA samples.
Takeaway
This study shows that we can make more copies of tiny bits of RNA to check how many genes are working, even when we don't have much RNA to start with.
Methodology
The study used a novel cDNA preamplification system to amplify 47 genes in bladder fluid samples before analyzing them with TaqMan Arrays.
Potential Biases
Potential bias due to variations in RNA quality and preamplification efficiency across different genes.
Limitations
Some genes showed inconsistent preamplification, which may affect their reliability in analysis.
Participant Demographics
Patients with pathologically diagnosed bladder cancer and controls without a history of bladder cancer.
Statistical Information
P-Value
<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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