Cited by 122Genomics and Chromatin DynamicsCytokine Signaling Pathways and InteractionsEpigenetics and DNA Methylation

Dynamic and Transient Remodeling of the Macrophage IL-10 Promoter during Transcription

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Zhang, Xia, Edwards, Justin P, Mosser, David M·2006·The Journal of Immunology

Abstract

To gain insight into the molecular mechanism(s) whereby macrophages produce large amounts of IL-10, we analyzed IL-10 gene expression and temporally correlated it with modifications to chromatin associated with the IL-10 promoter. In resting cells, which make essentially no cytokines, the IL-10 promoter is associated with histones containing little or no detectable modifications. Macrophages stimulated in the presence of immune complexes begin to produce high levels of IL-10 pre-mRNA transcripts within minutes of stimulation. Coincident with this transcription was a rapid and dynamic phosphorylation of histone H3 at specific sites in the IL-10 promoter. Histone phosphorylation was closely followed by the binding of transcription factors to the IL-10 promoter. Blocking the activation of ERK prevented histone phosphorylation and transcription factor binding to the IL-10 promoter. In contrast to histone phosphorylation, the peak of histone acetylation at this promoter did not occur until after transcription had peaked. Inhibition of histone deactylase did not alter IL-10 gene expression, suggesting that phosphorylation but not acetylation was the proximal event responsible for IL-10 transcription. Our findings reveal a rapid and well-orchestrated series of events in which ERK activation causes a rapid and transient phosphorylation of histone H3 at specific regions of the IL-10 promoter, resulting in a transient exposure of the IL-10 promoter to the transcription factors that bind there. This exposure is essential for the efficient induction of IL-10 gene expression in macrophages. To our knowledge, this represents a unique way in which the expression of a cytokine gene is regulated in macrophages.

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Crossref · 10.4049/jimmunol.177.2.1282

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Authors
Zhang, X., Edwards, J. P., & Mosser, D. M.
Affiliations
University of Maryland, College Park (US)
Venue
The Journal of Immunology
Published
2006-07
Volume
177
Issue
2
Pages
1282-1288
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2103235243
Cited by
122
References
32
Citations by year
2026: 2 · 2025: 3 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 2 · 2020: 2 · 2019: 6 · 2018: 5 · 2017: 6 · 2016: 8 · 2015: 2 · 2014: 12 · 2013: 7 · 2012: 4
FWCI
5.04
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Allergy and Infectious Diseases (AI49383, R01AI049383)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
IL-10, macrophages, histone H3 phosphorylation, histone acetylation, histone deacetylase, ERK activation, transcription factor binding, cytokine gene regulation, chromatin modification, transcriptional regulation
MeSH terms
Acetylation, Animals, Bone Marrow Cells, Cells, Cultured, Chromatin, Gene Expression Regulation, Histones, Kinetics, Lysine, Macrophages, Mice, Inbred BALB C, Phosphorylation, Promoter Regions, Genetic, Serine, Time Factors, Sp1 Transcription Factor, Interleukin-10, Protein Transport, Extracellular Signal-Regulated MAP Kinases, Mice

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