Cited by 696Genomics and Chromatin DynamicsEpigenetics and DNA MethylationChromatin Remodeling and Cancer

Remodeling of the enhancer landscape during macrophage activation is coupled to enhancer transcription

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Kaikkonen, Minna U., Spann, Nathanael J., Heinz, Sven, Romanoski, Casey E., Allison, Karmel A., Stender, Joshua D., Chun, Hyun B., Tough, David F. +3 more·2013·Molecular Cell

Abstract

Recent studies suggest a hierarchical model in which lineage-determining factors act in a collaborative manner to select and prime cell-specific enhancers, thereby enabling signal-dependent transcription factors to bind and function in a cell-type-specific manner. Consistent with this model, TLR4 signaling primarily regulates macrophage gene expression through a pre-existing enhancer landscape. However, TLR4 signaling also induces priming of ∼3,000 enhancer-like regions de novo, enabling visualization of intermediates in enhancer selection and activation. Unexpectedly, we find that enhancer transcription precedes local mono- and dimethylation of histone H3 lysine 4 (H3K4me1/2). H3K4 methylation at de novo enhancers is primarily dependent on the histone methyltransferases Mll1, Mll2/4, and Mll3 and is significantly reduced by inhibition of RNA polymerase II elongation. Collectively, these findings suggest an essential role of enhancer transcription in H3K4me1/2 deposition at de novo enhancers that is independent of potential functions of the resulting eRNA transcripts.

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Crossref · 10.1016/j.molcel.2013.07.010

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  • The level of eRNA transcription correlates with enhancer activity.

    “Several studies have shown that the level of eRNA transcription correlates with enhancer activity [60,61].”

    From Enhancer Function in the 3D Genome (2023) · cites this paper as [60]

  • In untreated macrophages, H3K27ac was enriched both at the promoter region of Tet2 and a region lying 40kb upstream, constituting a putative distal enhancer element.

    “In untreated macrophages, H3K27ac was enriched both at the promoter region of Tet2 and a region lying 40kb upstream, thus constituting a putative distal enhancer element (Figure 2A).”

    From TET2 Regulates the Neuroinflammatory Response in Microglia (2019) · cites this paper as Kaikkonen et al., 2013

    The Introduction and Results discuss enhancer marks and transcription in macrophages, but the passages found do not describe H3K27ac at the Tet2 promoter or a site 40 kb upstream in untreated macrophages. Searches for Tet2 and the 40-kb upstream region found no passage addressing that locus-specific claim; page numbers were not available in our copy. (LLM, conf=0.75)

    Experimental — accuracy not yet measured
  • Immune memory in microglia and macrophages is shaped by epigenetically mediated alterations in the enhancer repertoire of targeted genes.

    “Immune memory in microglia and macrophages are shaped by epigenetically mediated alterations in the enhancer repertoire of targeted genes [11, 32].”
  • Within cell-specific enhancers, DNA sequences provide information about the identities of key lineage-determining transcription factors and the activity states of signaling pathways that control the functions of signal-dependent transcription factors.

    “Within cell-specific enhancers, DNA sequences provide information about the identities of key LDTFs and the activity states of signaling pathways that control the functions of SDTFs (31, 33–35).”

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Authors
Kaikkonen, M. U., Spann, N. J., Heinz, S., Romanoski, C. E., Allison, K. A., Stender, J. D., Chun, H. B., Tough, D. F., Prinjha, R. K., Benner, C., & Glass, C. K.
Affiliations
  • University of Eastern Finland (FI)
  • University of California San Diego (US)
  • GlaxoSmithKline (United Kingdom) (GB)
  • Salk Institute for Biological Studies (US)
Corresponding author
Glass, Christopher K.
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2013-08
Volume
51
Issue
3
Pages
310-325
ISSN
1097-2765 (ISSN-L)
OpenAlex
W1998871958
Cited by
672
References
63
Citations by year
2026: 26 · 2025: 36 · 2024: 43 · 2023: 35 · 2022: 52 · 2021: 56 · 2020: 50 · 2019: 46 · 2018: 69 · 2017: 73 · 2016: 61 · 2015: 66 · 2014: 48 · 2013: 11
FWCI
27.79
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Fondation Leducq
  • Academy of Finland
  • Suomen Kulttuurirahasto
  • Sydäntutkimussäätiö
  • National Institutes of Health
  • National Cancer Institute (R01CA173903, CA17390)
  • National Institute of General Medical Sciences (T32GM008806)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK063491, DK091183, P01DK074868, P30DK063491, R01DK091183)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
Keywords
enhancer remodeling, macrophage activation, enhancer transcription, TLR4 signaling, H3K4 methylation, MLL1, MLL3, RNA polymerase II elongation, enhancer RNA, histone methyltransferase
MeSH terms
Proto-Oncogene Protein Spi-1, Animals, Base Sequence, Cells, Cultured, DNA-Binding Proteins, Enhancer Elements, Genetic, Gene Expression Regulation, Histones, Macrophage Activation, Macrophages, Male, Mice, Inbred C57BL, Histone-Lysine N-Methyltransferase, Proto-Oncogene Proteins, RNA Polymerase II, Transcription, Genetic, Signal Transduction, Trans-Activators, Gene Expression, NF-kappa B, Sequence Analysis, DNA, DNA Methylation, CCAAT-Enhancer-Binding Proteins, Toll-Like Receptor 4, Mice, Myeloid-Lymphoid Leukemia Protein, Transcription Factor RelA

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