Cited by 478IL-33, ST2, and ILC PathwaysParasites and Host InteractionsGastrointestinal motility and disorders

A Metabolite-Triggered Tuft Cell-ILC2 Circuit Drives Small Intestinal Remodeling

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Schneider, Christoph, O’Leary, Claire E., von Moltke, Jakob, Liang, Hong-Erh, Ang, Qi Yan, Turnbaugh, Peter J., Radhakrishnan, Sridhar, Pellizzon, Michael +2 more·2018·Cell

Abstract

The small intestinal tuft cell-ILC2 circuit mediates epithelial responses to intestinal helminths and protists by tuft cell chemosensory-like sensing and IL-25-mediated activation of lamina propria ILC2s. Small intestine ILC2s constitutively express the IL-25 receptor, which is negatively regulated by A20 (Tnfaip3). A20 deficiency in ILC2s spontaneously triggers the circuit and, unexpectedly, promotes adaptive small-intestinal lengthening and remodeling. Circuit activation occurs upon weaning and is enabled by dietary polysaccharides that render mice permissive for Tritrichomonas colonization, resulting in luminal accumulation of acetate and succinate, metabolites of the protist hydrogenosome. Tuft cells express GPR91, the succinate receptor, and dietary succinate, but not acetate, activates ILC2s via a tuft-, TRPM5-, and IL-25-dependent pathway. Also induced by parasitic helminths, circuit activation and small intestinal remodeling impairs infestation by new helminths, consistent with the phenomenon of concomitant immunity. We describe a metabolic sensing circuit that may have evolved to facilitate mutualistic responses to luminal pathosymbionts.

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Crossref · 10.1016/j.cell.2018.05.014

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  • Tissue and circulating succinate is elevated in chronic inflammatory settings such as models of diet-induced obesity.

    “Tissue and circulating succinate is also elevated in other chronic inflammatory settings such as models of diet-induced obesity8.”

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Authors
Schneider, C., O’Leary, C. E., von Moltke, J., Liang, H.-E., Ang, Q. Y., Turnbaugh, P. J., Radhakrishnan, S., Pellizzon, M., Ma, A., & Locksley, R. M.
Affiliations
  • University of California, San Francisco (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Locksley, Richard M.
Venue
Cell
Publisher
Elsevier BV
Published
2018-07
Volume
174
Issue
2
Pages
271-284.e14
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2807333794
Cited by
478
References
54
Citations by year
2026: 56 · 2025: 69 · 2024: 60 · 2023: 57 · 2022: 58 · 2021: 60 · 2020: 47 · 2019: 49 · 2018: 20
FWCI
18.90
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • NIH (AI26918, AI30663, HL128903, HL122593)
  • Howard Hughes Medical Institute
  • Sandler Asthma Basic Research Center at the UCSF
  • Swiss National Science Foundation (P2EZP3_162266, P300PA_171591)
  • Nadia’s Gift Foundation Innovator
  • Damon Runyon Cancer Research Foundation (DRR-42-16)
  • UCSF Program for Breakthrough Biomedical Research
  • Sandler Foundation
  • Searle Scholars Program (SSP-2016-1352)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › IL-33, ST2, and ILC Pathways
  • Life Sciences › Immunology and Microbiology › Parasitology › Parasites and Host Interactions
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
tuft cells, ILC2, IL-25, A20, succinic acid, acetate, GPR91, TRPM5, Tritrichomonas, intestinal helminths, concomitant immunity, dietary polysaccharides, weaning
MeSH terms
Tumor Necrosis Factor alpha-Induced Protein 3, Acetates, Animals, Dietary Fiber, Energy Metabolism, Epithelial Cells, Interleukins, Intestinal Mucosa, Intestine, Small, Mice, Inbred C57BL, Mice, Transgenic, Plasmids, Tritrichomonas, Receptors, Interleukin, Succinic Acid, Receptors, G-Protein-Coupled, TRPM Cation Channels, Mice, Receptors, Interleukin-17, Microbiota

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