Emergence of enhancers at late DNA replicating regions

Cornejo-Páramo, Paola and Petrova, Veronika and Zhang, Xuan and Young, Robert S. and Wong, Emily S. (2024) Emergence of enhancers at late DNA replicating regions. Nature Communications, 15 (1). ISSN 2041-1723

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Link to published document: http://doi.org/10.1038/s41467-024-47391-5

Abstract

Enhancers are fast-evolving genomic sequences that control spatiotemporal gene expression patterns. By examining enhancer turnover across mammalian species and in multiple tissue types, we uncover a relationship between the emergence of enhancers and genome organization as a function of germline DNA replication time. While enhancers are most abundant in euchromatic regions, enhancers emerge almost twice as often in late compared to early germline replicating regions, independent of transposable elements. Using a deep learning sequence model, we demonstrate that new enhancers are enriched for mutations that alter transcription factor (TF) binding. Recently evolved enhancers appear to be mostly neutrally evolving and enriched in eQTLs. They also show more tissue specificity than conserved enhancers, and the TFs that bind to these elements, as inferred by binding sequences, also show increased tissue-specific gene expression. We find a similar relationship with DNA replication time in cancer, suggesting that these observations may be time-invariant principles of genome evolution. Our work underscores that genome organization has a profound impact in shaping mammalian gene regulation.

Item Type: Article
Subjects: R Medicine > R Medicine (General)
Depositing User: Repository Administrator
Date Deposited: 18 Dec 2024 00:32
Last Modified: 18 Dec 2024 00:32
URI: https://eprints.victorchang.edu.au/id/eprint/1548

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