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Published on: July 18, 2025
Genome-wide analysis of functional and evolutionary features of tele-enhancers
1Computational Biology Branch, National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20892.
Abstract:
We investigated sequence features of enhancers separated from their target gene by at least one intermediate gene/exon (named tele-enhancers in this study) and enhancers residing inside their target gene locus. In this study, we used whole genome enhancer maps and gene expression profiles to establish a large panel of tele-enhancers. By contrasting tele-enhancers to proximal enhancers targeting heart genes, we observed that heart tele-enhancers use unique regulatory mechanisms based on the cardiac transcription factors SRF, TEAD, and NKX-2.5, whereas proximal heart enhancers rely on GATA4 instead. A functional analysis showed that tele-enhancers preferentially regulate house-keeping genes and genes with a metabolic role during heart development. In addition, tele-enhancers are significantly more conserved than their proximal counterparts. Similar trends have been observed for non-heart tissues and cell types, suggesting that our findings represent general characteristics of tele-enhancers.
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