Abstract:
:Distal enhancers play pivotal roles in development and disease yet remain one of the least understood regulatory elements. We used massively parallel reporter assays to perform functional comparisons of two leading enhancer models and find that gene-distal transcription start sites are robust predictors of active enhancers with higher resolution than histone modifications. We show that active enhancer units are precisely delineated by active transcription start sites, validate that these boundaries are sufficient for capturing enhancer function, and confirm that core promoter sequences are necessary for this activity. We assay adjacent enhancers and find that their joint activity is often driven by the stronger unit within the cluster. Finally, we validate these results through functional dissection of a distal enhancer cluster using CRISPR-Cas9 deletions. In summary, definition of high-resolution enhancer boundaries enables deconvolution of complex regulatory loci into modular units.
journal_name
Nat Genetjournal_title
Nature geneticsauthors
Tippens ND,Liang J,Leung AK,Wierbowski SD,Ozer A,Booth JG,Lis JT,Yu Hdoi
10.1038/s41588-020-0686-2subject
Has Abstractpub_date
2020-10-01 00:00:00pages
1067-1075issue
10eissn
1061-4036issn
1546-1718pii
10.1038/s41588-020-0686-2journal_volume
52pub_type
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