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J Theor Biol. 2009 Aug 21;259(4):793-8. Epub 2009 May 20.

Increasing MicroRNA target prediction confidence by the relative R(2) method.

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Institute of Statistics, National Chiao Tung University, Hsinchu, Taiwan.

Abstract

MicroRNAs (miRNAs) are short noncoding RNAs involved in post-transcriptional gene regulation via binding to mRNAs. Studies show that in a multicellular organism microRNAs (miRNAs) downregulate a large number of target mRNAs. However, predicting the target genes of a miRNA is challenging. Microarray expression profiling has been proposed as a complementary method to increase the confidence of miRNA target prediction, but it can become computationally costly or even intractable when many miRNAs and their effects across multiple tissues are to be considered. Here, we propose a statistical method, the relative R(2) method, to find high-confidence targets among the set of potential targets predicted by a computational method such as TargetScanS or by microarray analysis, when expression data of both miRNAs and mRNAs are available for multiple tissues. Applying this method to existing data, we obtain many high-confidence targets in mouse.

PMID:: 19463832; [PubMed - indexed for MEDLINE]
PMCID:: PMC2744435

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