Cited by 89Barrier Structure and Function StudiesToxic Organic Pollutants ImpactInflammatory Bowel Disease

Endothelial sensing of AHR ligands regulates intestinal homeostasis

Open access
Wiggins, Benjamin G., Wang, Yi-Fang, Burke, Alice, Grunberg, Nil, Vlachaki Walker, Julia M., Dore, Marian, Chahrour, Catherine, Pennycook, Betheney R. +7 more·2023·Nature

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Abstract

Endothelial cells line the blood and lymphatic vasculature, and act as an essential physical barrier, control nutrient transport, facilitate tissue immunosurveillance and coordinate angiogenesis and lymphangiogenesis 1,2 . In the intestine, dietary and microbial cues are particularly important in the regulation of organ homeostasis. However, whether enteric endothelial cells actively sense and integrate such signals is currently unknown. Here we show that the aryl hydrocarbon receptor (AHR) acts as a critical node for endothelial cell sensing of dietary metabolites in adult mice and human primary endothelial cells. We first established a comprehensive single-cell endothelial atlas of the mouse small intestine, uncovering the cellular complexity and functional heterogeneity of blood and lymphatic endothelial cells. Analyses of AHR-mediated responses at single-cell resolution identified tissue-protective transcriptional signatures and regulatory networks promoting cellular quiescence and vascular normalcy at steady state. Endothelial AHR deficiency in adult mice resulted in dysregulated inflammatory responses and the initiation of proliferative pathways. Furthermore, endothelial sensing of dietary AHR ligands was required for optimal protection against enteric infection. In human endothelial cells, AHR signalling promoted quiescence and restrained activation by inflammatory mediators. Together, our data provide a comprehensive dissection of the effect of environmental sensing across the spectrum of enteric endothelia, demonstrating that endothelial AHR signalling integrates dietary cues to maintain tissue homeostasis by promoting endothelial cell quiescence and vascular normalcy.

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  • Dietary supplementation with indole-3-carbinol also triggers the activation of endothelial AHR in LPS-treated mice, leading to reduced inflammatory activation in endothelial cells and improved gut vascular barrier integrity.

    “dietary supplementation with indole-3-carbinol also triggers the activation of endothelial AHR in LPS-treated mice. This leads to reduced inflammatory activation in endothelial cells, resulting in improved gut vascular barrier integrity.”

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Authors
Wiggins, B. G., Wang, Y.-F., Burke, A., Grunberg, N., Vlachaki Walker, J. M., Dore, M., Chahrour, C., Pennycook, B. R., Sanchez-Garrido, J., Vernia, S., Barr, A. R., Frankel, G., Birdsey, G. M., Randi, A. M., & Schiering, C.
Affiliations
  • MRC London Institute of Medical Sciences (GB)
  • Imperial College London (GB)
Corresponding author
  • Wiggins, Benjamin G.
  • Schiering, Chris
Venue
Nature
Published
2023-08-16
Volume
621
Issue
7980
Pages
821-829
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W4385879248
Cited by
89
References
99
Citations by year
2026: 27 · 2025: 30 · 2024: 25 · 2023: 7
FWCI
9.17
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion, cc-by)
  • Research Square (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Spiral (Imperial College London) (submittedVersion, cc-by)
Funders
  • University of Pennsylvania
  • Harvard University
  • Wellcome Trust (224282/Z/21/Z, 211080/Z/18/Z)
  • Cancer Research UK (25729)
  • National Institute for Health and Care Research
  • British Heart Foundation (FS/PhD/22/29242, PG/20/16/35047, RG/17/4/32662)
  • Imperial College London
  • Medical Research Council
  • NIHR Imperial Biomedical Research Centre
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
Keywords
aryl hydrocarbon receptor, endothelial cells, intestinal homeostasis, dietary metabolites, AhR ligands, single-cell atlas, lymphatic endothelium, endothelial quiescence, vascular homeostasis, intestinal inflammation, gastrointestinal infections, human endothelial cells, environmental sensing
MeSH terms
Animals, Homeostasis, Humans, Intestines, Ligands, Signal Transduction, Receptors, Aryl Hydrocarbon, Endothelial Cells, Mice

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