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Using high-throughput multi-omics data to investigate structural balance in elementary gene regulatory network motifs
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- Zenere, Alberto (author)
- Linköpings universitet,Reglerteknik,Tekniska fakulteten
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- Rundquist, Olof (author)
- Linköpings universitet,Bioinformatik,Tekniska fakulteten
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- Gustafsson, Mika (author)
- Linköpings universitet,Bioinformatik,Tekniska fakulteten
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- 2021-08-12
- 2022
- English.
- In: Bioinformatics. - : Oxford University Press. - 1367-4803 .- 1367-4811. ; 38:1, s. 173-178
- Journal article (peer-reviewed)
Abstract
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- Motivation: The simultaneous availability of ATAC-seq and RNA-seq experiments allows to obtain a more in-depth knowledge on the regulatory mechanisms occurring in gene regulatory networks. In this article, we highlight and analyze two novel aspects that leverage on the possibility of pairing RNA-seq and ATAC-seq data. Namely we investigate the causality of the relationships between transcription factors, chromatin and target genes and the internal consistency between the two omics, here measured in terms of structural balance in the sample correlations along elementary length-3 cycles. Results: We propose a framework that uses the a priori knowledge on the data to infer elementary causal regulatory motifs (namely chains and forks) in the network. It is based on the notions of conditional independence and partial correlation, and can be applied to both longitudinal and non-longitudinal data. Our analysis highlights a strong connection between the causal regulatory motifs that are selected by the data and the structural balance of the underlying sample correlation graphs: strikingly, >97% of the selected regulatory motifs belong to a balanced subgraph. This result shows that internal consistency, as measured by structural balance, is close to a necessary condition for 3-node regulatory motifs to satisfy causality rules.
Subject headings
- NATURVETENSKAP -- Biologi -- Bioinformatik och systembiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Bioinformatics and Systems Biology (hsv//eng)
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