Genomic context sensitizes regulatory elements to genetic disruption

Raquel Ordoñez, Weimin Zhang, Gwen Ellis, Yinan Zhu, Hannah J. Ashe, André M. Ribeiro-dos-Santos, Ran Brosh, Emily Huang, Megan S. Hogan, Jef D. Boeke, Matthew T. Maurano

Research output: Contribution to journalArticlepeer-review


Genomic context critically modulates regulatory function but is difficult to manipulate systematically. The murine insulin-like growth factor 2 (Igf2)/H19 locus is a paradigmatic model of enhancer selectivity, whereby CTCF occupancy at an imprinting control region directs downstream enhancers to activate either H19 or Igf2. We used synthetic regulatory genomics to repeatedly replace the native locus with 157-kb payloads, and we systematically dissected its architecture. Enhancer deletion and ectopic delivery revealed previously uncharacterized long-range regulatory dependencies at the native locus. Exchanging the H19 enhancer cluster with the Sox2 locus control region (LCR) showed that the H19 enhancers relied on their native surroundings while the Sox2 LCR functioned autonomously. Analysis of regulatory DNA actuation across cell types revealed that these enhancer clusters typify broader classes of context sensitivity genome wide. These results show that unexpected dependencies influence even well-studied loci, and our approach permits large-scale manipulation of complete loci to investigate the relationship between regulatory architecture and function.

Original languageEnglish (US)
Pages (from-to)1842-1854.e7
JournalMolecular Cell
Issue number10
StatePublished - May 16 2024


  • enhancer selectivity
  • gene regulation
  • genetic engineering
  • genome writing
  • genomic regulatory architecture
  • synthetic regulatory genomics

ASJC Scopus subject areas

  • Molecular Biology
  • Cell Biology


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