Evaluation of sense-strand mRNA amplification by comparative quantitative PCR
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- 作者：Loyal A Goff (1)
Jessica Bowers (2)
Jaime Schwalm (2)
Kevin Howerton (2)
Robert C Getts (2)
Ronald P Hart (1) - 刊名：BMC Genomics
- 出版年：2004
- 出版时间：December 2004
- 年：2004
- 卷：5
- 期：1
- 全文大小：302KB
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Jessica Bowers (2)
Jaime Schwalm (2)
Kevin Howerton (2)
Robert C Getts (2)
Ronald P Hart (1)
1. W.M. Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, NJ, 08854, USA
2. Genisphere, Inc., Hatfield, PA, 19440, USA
文摘
Background RNA amplification is required for incorporating laser-capture microdissection techniques into microarray assays. However, standard oligonucleotide microarrays contain sense-strand probes, so traditional T7 amplification schemes producing anti-sense RNA are not appropriate for hybridization when combined with conventional reverse transcription labeling methods. We wished to assess the accuracy of a new sense-strand RNA amplification method by comparing ratios between two samples using quantitative real-time PCR (qPCR), mimicking a two-color microarray assay. Results We performed our validation using qPCR. Three samples of rat brain RNA and three samples of rat liver RNA were amplified using several kits (Ambion messageAmp, NuGen Ovation, and several versions of Genisphere SenseAmp). Results were assessed by comparing the liver/brain ratio for 192 mRNAs before and after amplification. In general, all kits produced strong correlations with unamplified RNAs. The SenseAmp kit produced the highest correlation, and was also able to amplify a partially degraded sample accurately. Conclusion We have validated an optimized sense-strand RNA amplification method for use in comparative studies such as two-color microarrays.