Cited by 99Tryptophan and brain disordersStress Responses and CortisolGut microbiota and health

Dectin-1 signaling on colonic γδ T cells promotes psychosocial stress responses

Open access
Zhu, Xiaolei, Sakamoto, Shinji, Ishii, Chiharu, Smith, Matthew D., Ito, Koki, Obayashi, Mizuho, Unger, Lisa, Hasegawa, Yuto +11 more·2023·Nature Immunology

Abstract

The intestinal immune system interacts with commensal microbiota to maintain gut homeostasis. Furthermore, stress alters the microbiome composition, leading to impaired brain function; yet how the intestinal immune system mediates these effects remains elusive. Here we report that colonic γδ T cells modulate behavioral vulnerability to chronic social stress via dectin-1 signaling. We show that reduction in specific Lactobacillus species, which are involved in T cell differentiation to protect the host immune system, contributes to stress-induced social-avoidance behavior, consistent with our observations in patients with depression. Stress-susceptible behaviors derive from increased differentiation in colonic interleukin (IL)-17-producing γδ T cells (γδ17 T cells) and their meningeal accumulation. These stress-susceptible cellular and behavioral phenotypes are causally mediated by dectin-1, an innate immune receptor expressed in γδ T cells. Our results highlight the previously unrecognized role of intestinal γδ17 T cells in the modulation of psychological stress responses and the importance of dectin-1 as a potential therapeutic target for the treatment of stress-induced behaviors.

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  • Chronic stress impairs healthy gastrointestinal function, manifesting as dysregulated intestinal motility, microbiota dysbiosis, and low-grade inflammation.

    “Growing evidence suggests that chronic stress impairs healthy gastrointestinal function, presenting as dysregulated intestinal motility, dysbiosis of the microbiota and initiation of low-grade inflammation94,95.”

    From Central regulation of stress-evoked peripheral immune responses (2023) · cites this paper as [95]

    The Results sections on altered microbial communities and colonic T cells report gut-microbiota changes and increased colonic γδ17 T cells in stress-susceptible mice. Our copy does not establish dysregulated intestinal motility or the initiation of low-grade gastrointestinal inflammation, so it supports only part of the cited sentence. (LLM, conf=0.87)

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  • CSDS in mice promotes differentiation of IL17-expressing γδ T cells in the colon via dectin-1 signaling, and neutralizing these cells or knocking out dectin-1 protects against CSDS-induced social avoidance.

    “One recent study showed that CSDS in mice promotes differentiation of IL17-expressing γδ T cells in the colon, in a process that is dependent on dectin-1 signaling95. When these cells were neutralized or dectin-1 was genetically knocked out, mice were protected against CSDS-induced social avoidance95.”

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Authors
Zhu, X., Sakamoto, S., Ishii, C., Smith, M. D., Ito, K., Obayashi, M., Unger, L., Hasegawa, Y., Kurokawa, S., Kishimoto, T., Li, H., Hatano, S., Wang, T.-H., Yoshikai, Y., Kano, S.-I., Fukuda, S., Sanada, K., Calabresi, P. A., & Kamiya, A.
Affiliations
  • Johns Hopkins University (US)
  • Institute for Advanced Biosciences, Keio University (JP)
  • Keio University (JP)
  • Southern Illinois University Carbondale (US)
  • Medical Institute of Bioregulation, Kyushu University (JP)
  • University of Alabama at Birmingham (US)
  • University of Tsukuba (JP)
  • SHOWA Medical University (JP)
Corresponding author
Kamiya, Atsushi
Venue
Nature Immunology
Published
2023-03-20
Volume
24
Issue
4
Pages
625-636
ISSN
  • 1529-2908 (ISSN-L)
  • 1529-2916
OpenAlex
W4328049092
Cited by
99
References
71
Citations by year
2026: 28 · 2025: 28 · 2024: 24 · 2023: 19
FWCI
9.17
Type
journal article
Language
en
Open access
Locations
  • Nature Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Johns Hopkins University
  • Japan Agency for Medical Research and Development (CREST, JP22gm1010009)
  • Japan Dairy Association
  • Nestec
  • Japan Society for the Promotion of Science (23K24798, CREST, 22H03541)
  • National Institute on Aging (R01AG065168)
  • National Institute of Mental Health (R21MH128765, R01MH113645, P50MH094268)
  • National Institute on Drug Abuse (R01DA041208)
  • National Institute of Neurological Disorders and Stroke (R37NS041435, R01NS041435)
  • National Center for Complementary and Integrative Health (K01AT010984, R21AT008547)
  • Core Research for Evolutional Science and Technology
  • Exploratory Research for Advanced Technology (JPMJER1902)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
Keywords
Dectin-1, γδ T cells, psychosocial stress, chronic social stress, depression, Lactobacillus, gut microbiota, IL-17, innate immune receptors, stress-induced behavior
MeSH terms
Dectin-1, Colon, Intestines, Signal Transduction, Receptors, Antigen, T-Cell, gamma-delta, Lectins, C-Type

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