Cited by 7Genomics and Chromatin DynamicsChromosomal and Genetic VariationsBioinformatics and Genomic Networks

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An integrative approach for fine-mapping chromatin interactions

Open access
Jaroszewicz, Artur, Ernst, Jason·2020·Bioinformatics

Published version of a preprint

Abstract

Motivation: Chromatin interactions play an important role in genome architecture and gene regulation. The Hi-C assay generates such interactions maps genome-wide, but at relatively low resolutions (e.g. 5-25 kb), which is substantially coarser than the resolution of transcription factor binding sites or open chromatin sites that are potential sources of such interactions. Results: To predict the sources of Hi-C-identified interactions at a high resolution (e.g. 100 bp), we developed a computational method that integrates data from DNase-seq and ChIP-seq of TFs and histone marks. Our method, χ-CNN, uses this data to first train a convolutional neural network (CNN) to discriminate between called Hi-C interactions and non-interactions. χ-CNN then predicts the high-resolution source of each Hi-C interaction using a feature attribution method. We show these predictions recover original Hi-C peaks after extending them to be coarser. We also show χ-CNN predictions enrich for evolutionarily conserved bases, eQTLs and CTCF motifs, supporting their biological significance. χ-CNN provides an approach for analyzing important aspects of genome architecture and gene regulation at a higher resolution than previously possible. Availability and implementation: χ-CNN software is available on GitHub (https://github.com/ernstlab/X-CNN). Supplementary information: Supplementary data are available at Bioinformatics online.

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Crossref · 10.1093/bioinformatics/btz843

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  • Early AE fusion can be used to initialize the first layer of another neural network, as demonstrated by Jaroszewicz et al. on fine-mapping of chromatin peaks.

    “Early AE fusion can also be used to initialize the first layer of another neural network as demonstrated by Jaroszewicz et al. [32] on fine-mapping of chromatin peaks.”
  • Initialization with a useful joint latent representation of the data can enhance the training procedure significantly.

    “Initialization with a useful joint latent representation of the data can enhance the training procedure significantly.”

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Metadata

Authors
Jaroszewicz, A., & Ernst, J.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Ernst, Jason
Venue
Bioinformatics
Published
2019-11-19
Volume
36
Issue
6
Pages
1704-1711
ISSN
  • 1367-4803 (ISSN-L)
  • 1367-4811
OpenAlex
W2990636390
Cited by
7
References
1
Citations by year
2026: 1 · 2024: 1 · 2022: 1 · 2021: 3 · 2020: 1
FWCI
0.41
Type
journal article
Language
en
Open access
Locations
  • Bioinformatics (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institute of Health (T32HG002536, R01ES024995, U01HG007912, DP1DA044371)
  • National Science Foundation
  • NIH
  • NSF (1254200)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Chromosomal and Genetic Variations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
Keywords
chromatin interactions, Hi-C, fine mapping, convolutional neural networks, DNase-seq, ChIP-seq, transcription factor binding sites, histone modifications, feature attribution, genome organization, gene expression regulation, expression quantitative trait loci
MeSH terms
Chromatin, Software, Neural Networks, Computer, Genome, Histone Code

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