Genome-wide mapping of promoter-anchored interactions with close to single-enhancer resolution

Genome Biol. 2015 Aug 3;16(1):156. doi: 10.1186/s13059-015-0727-9.

Abstract

Although the locations of promoters and enhancers have been identified in several cell types, we still have limited information on their connectivity. We developed HiCap, which combines a 4-cutter restriction enzyme Hi-C with sequence capture of promoter regions. Applying the method to mouse embryonic stem cells, we identified promoter-anchored interactions involving 15,905 promoters and 71,984 distal regions. The distal regions were enriched for enhancer marks and transcription, and had a mean fragment size of only 699 bp--close to single-enhancer resolution. High-resolution maps of promoter-anchored interactions with HiCap will be important for detailed characterizations of chromatin interaction landscapes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Chromatin / chemistry*
  • Chromosome Mapping
  • Enhancer Elements, Genetic*
  • Gene Expression
  • Gene Regulatory Networks
  • Genomics / methods*
  • Mice
  • Promoter Regions, Genetic*
  • Transcription Factors / metabolism

Substances

  • Chromatin
  • Transcription Factors

Associated data

  • GEO/GSE60495
  • SRA/SRP045579
  • SRA/SRP045580