Dynamic modeling of miRNA-mediated feed-forward loops

F. Eduati, B. Di Camillo, M. Karbiener, M. Scheideler, D. Corà, M. Caselle, G.M. Toffolo

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)

Abstract

Given the important role of microRNAs (miRNAs) in genome-wide regulation of gene expression, increasing interest is devoted to mixed transcriptional and post-transcriptional regulatory networks analyzing the combinatorial effect of transcription factors (TFs) and miRNAs on target genes. In particular, miRNAs are known to be involved in feed-forward loops (FFLs), where a TF regulates a miRNA and they both regulate a target gene. Different algorithms have been proposed to identify miRNA targets, based on pairing between the 5' region of the miRNA and the 3'UTR of the target gene, and correlation between miRNA host genes and target mRNA expression data. Here we propose a quantitative approach integrating an existing method for mixed FFL identification based on sequence analysis with differential equation modeling approach that permits us to select active FFLs based on their dynamics. Different models are assessed based on their ability to properly reproduce miRNA and mRNA expression data in terms of identification criteria, namely: goodness of fit, precision of the estimates, and comparison with submodels. In comparison with standard approaches based on correlation, our method improves in specificity. As a case study, we applied our method to adipogenic differentiation gene expression data providing potential novel players in this regulatory network. Supplementary Material for this article is available at www.liebertonline.com/cmb.

Original languageEnglish
Pages (from-to)188-199
Number of pages12
JournalJournal of Computational Biology
Volume19
Issue number2
DOIs
Publication statusPublished - Feb 2012
Externally publishedYes

Keywords

  • Adipogenesis
  • Algorithms
  • Cells, Cultured
  • Computer Simulation
  • Feedback
  • Gene Expression Profiling
  • Gene Expression Regulation
  • Gene Regulatory Networks
  • Humans
  • MicroRNAs
  • Models, Genetic
  • Multipotent Stem Cells
  • RNA, Messenger
  • Transcription Factors
  • Journal Article
  • Research Support, Non-U.S. Gov't

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