Cited by 65Genomics and Chromatin DynamicsChromosomal and Genetic VariationsGenomics and Phylogenetic Studies

Functional characterization of enhancer evolution in the primate lineage

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Klein, Jason C., Keith, Aidan, Agarwal, Vikram, Durham, Timothy, Shendure, Jay·2018·Genome Biology

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Abstract

BACKGROUND: Enhancers play an important role in morphological evolution and speciation by controlling the spatiotemporal expression of genes. Previous efforts to understand the evolution of enhancers in primates have typically studied many enhancers at low resolution, or single enhancers at high resolution. Although comparative genomic studies reveal large-scale turnover of enhancers, a specific understanding of the molecular steps by which mammalian or primate enhancers evolve remains elusive. RESULTS: We identified candidate hominoid-specific liver enhancers from H3K27ac ChIP-seq data. After locating orthologs in 11 primates spanning around 40 million years, we synthesized all orthologs as well as computational reconstructions of 9 ancestral sequences for 348 active tiles of 233 putative enhancers. We concurrently tested all sequences for regulatory activity with STARR-seq in HepG2 cells. We observe groups of enhancer tiles with coherent trajectories, most of which can be potentially explained by a single gain or loss-of-activity event per tile. We quantify the correlation between the number of mutations along a branch and the magnitude of change in functional activity. Finally, we identify 84 mutations that correlate with functional changes; these are enriched for cytosine deamination events within CpGs. CONCLUSIONS: We characterized the evolutionary-functional trajectories of hundreds of liver enhancers throughout the primate phylogeny. We observe subsets of regulatory sequences that appear to have gained or lost activity. We use these data to quantify the relationship between sequence and functional divergence, and to identify CpG deamination as a potentially important force in driving changes in enhancer activity during primate evolution.

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  • MPRAs have been applied to assess biochemically annotated candidate enhancers, candidate enhancers harbouring variants that potentially mediate eQTLs, and even scans of the entire human genome.

    “MPRAs have been applied to assess biochemically annotated candidate enhancers77,176-178, candidate enhancers harbouring variants that potentially mediate eQTLs179-182, and even scans of the entire human genome108,183.”

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  1. [28]Villar D, Berthelot C, Aldridge S, Rayner TF, Lukk M, Pignatelli M, Park TJ, Deaville R, Erichsen JT, Jasinska AJ, Turner JMA, Bertelsen MF, Murchison EP, Flicek P, Odom DT. Enhancer evolution across 20 mammalian species. ArrayExpress. 2015; https://www.ebi.ac.uk/arrayexpress/experiments/E-MTAB-2633/. PMC4313353 25635462
  2. [53]Klein JC, Keith A, Agarwal V, Durham TJ, Shendure J. Functional characterization of enhancer evolution in the primate lineage. GEO. 2018; https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE113978. PMC6060477 30045748

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Authors
Klein, J. C., Keith, A., Agarwal, V., Durham, T., & Shendure, J.
Affiliations
  • University of Washington (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
  • Klein, Jason C.
  • Shendure, Jay
Venue
Genome Biology
Published
2018-07-25
Volume
19
Issue
1
Pages
99-99
ISSN
  • 1465-6906 (ISSN-L)
  • 1474-760X
OpenAlex
W2950235380
Cited by
63
References
56
Citations by year
2026: 5 · 2025: 7 · 2024: 8 · 2023: 11 · 2022: 8 · 2021: 7 · 2020: 8 · 2019: 7 · 2018: 2
FWCI
2.13
Type
journal article
Language
en
Open access
Locations
  • Genome biology (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institutes of Health (UM1HG009408, R01CA197139, R01HG006768, 5T32HL007093-43, U24HG009446)
  • National Human Genome Research Institute (1F30HG009479)
  • Howard Hughes Medical Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
Keywords
enhancer evolution, primate evolution, H3K27ac, ancestral sequence reconstruction, STARR-seq, regulatory evolution, orthologs
MeSH terms
Animals, Callitrichinae, Cebidae, Cercopithecidae, Enhancer Elements, Genetic, Biological Evolution, Histones, Humans, Liver, Mutation, Phylogeny, Hominidae, Hylobatidae, CpG Islands, Atelidae, Hep G2 Cells

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