Importance of Primer Design in siRNA Studies
Author Information
Author(s): Herbert Mike, Coppieters Natacha, Lasham Annette, Cao Helen, Reid Glen
Primary Institution: Genesis Research & Development Corporation, Ltd
Hypothesis
Does the design of RT-qPCR primers affect the detection of siRNA-mediated mRNA silencing in vivo?
Conclusion
Using primers that flank the siRNA cleavage site can lead to false positive results in RT-qPCR measurements of mRNA knockdown.
Supporting Evidence
- Detection of siRNA-mediated knockdown was dependent on the primers used for RT-qPCR.
- False positives were observed when primers flanked the siRNA cleavage site.
- High concentrations of siRNA can interfere with downstream analysis.
- Using primers outside the siRNA target site did not show significant knockdown.
- Co-purified siRNA can affect the accuracy of RT-qPCR results.
Takeaway
When scientists use special RNA to silence genes, the way they design their tests can sometimes give wrong results, especially if they don't choose the right parts of the RNA to measure.
Methodology
The study involved administering siRNAs to A549 xenografts and measuring mRNA levels using RT-qPCR with different primer pairs.
Potential Biases
Potential bias due to the specific conditions under which the experiments were conducted, including the use of only one type of cancer cell line.
Limitations
The study primarily focused on a specific cell line and may not generalize to all types of cells or conditions.
Participant Demographics
The study used CD1 nude mice for in vivo experiments.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website