Identifying co-regulating microRNA groups

An, Jiyuan, Choi, Kwok Pui, Wells, Christine A. and Chen, Yi-Ping Phoebe (2010) Identifying co-regulating microRNA groups. Journal of Bioinformatics and Computational Biology, 8 1: 99-115. doi:10.1142/S0219720010004574


Author An, Jiyuan
Choi, Kwok Pui
Wells, Christine A.
Chen, Yi-Ping Phoebe
Title Identifying co-regulating microRNA groups
Journal name Journal of Bioinformatics and Computational Biology   Check publisher's open access policy
ISSN 0219-7200
1757-6334
Publication date 2010-02
Sub-type Article (original research)
DOI 10.1142/S0219720010004574
Volume 8
Issue 1
Start page 99
End page 115
Total pages 17
Place of publication London, United Kingdom
Publisher Imperial College Press
Language eng
Formatted abstract
Background: Current miRNA target prediction tools have the common problem that their false positive rate is high. This renders identification of co-regulating groups of miRNAs and target genes unreliable. In this study, we describe a procedure to identify highly probable co-regulating miRNAs and the corresponding co-regulated gene groups. Our procedure involves a sequence of statistical tests: (1) identify genes that are highly probable miRNA targets; (2) determine for each such gene, the minimum number of miRNAs that co-regulate it with high probability; (3) find, for each such gene, the combination of the determined minimum size of miRNAs that co-regulate it with the lowest p-value; and (4) discover for each such combination of miRNAs, the group of genes that are co-regulated by these miRNAs with the lowest p-value computed based on GO term annotations of the genes. Results: Our method identifies 4, 3 and 2-term miRNA groups that co-regulate gene groups of size at least 3 in human. Our result suggests some interesting hypothesis on the functional role of several miRNAs through a "guilt by association" reasoning. For example, miR-130, miR-19 and miR-101 are known neurodegenerative diseases associated miRNAs. Our 3-term miRNA table shows that miR-130/19/101 form a co-regulating group of rank 22 (p-value =1.16 × 10-2). Since miR-144 is co-regulating with miR-130, miR-19 and miR-101 of rank 4 (p-value = 1.16 × 10-2) in our 4-term miRNA table, this suggests hsa-miR-144 may be neurodegenerative diseases related miRNA. Conclusions: This work identifies highly probable co-regulating miRNAs, which are refined from the prediction by computational tools using (1) signal-to-noise ratio to get high accurate regulating miRNAs for every gene, and (2) Gene Ontology to obtain functional related co-regulating miRNA groups. Our result has partly been supported by biological experiments. Based on prediction by TargetScanS, we found highly probable target gene groups in the Supplementary Information. This result might help biologists to find small set of miRNAs for genes of interest rather than huge amount of miRNA set. Supplementary Information: http://www.deakin.edu.au/~phoebe/JBCBAnChen/JBCB.htm.
Keyword microRNA
Co-regulating
Target gene
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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Created: Mon, 23 Apr 2012, 10:58:57 EST by Miss Susan Theiss on behalf of School of Biological Sciences