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| Status |
Public on Jan 31, 2024 |
| Title |
Gut bacteria-derived serotonin promotes immune tolerance in early life through regulation of neonatal gut T cells I |
| Organism |
Mus musculus |
| Experiment type |
Other
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| Summary |
The gut microbiota promotes immune system development in early life, but the interactions between the gut metabolome and immune cells in the neonatal gut remains largely undefined. Here, we demonstrate that the neonatal gut is uniquely enriched with neurotransmitters, including serotonin; specific gut bacteria produce serotonin directly while downregulating monoamine oxidase A to limit serotonin breakdown. Serotonin directly signals to T cells to increase intracellular indole-3-acetaldehdye to inhibit mTOR activation and thereby promotes the differentiation of regulatory T cells, both ex vivo and in vivo in the neonatal intestine. Oral gavage of serotonin into neonatal mice leads to long-term T cell-mediated antigen-specific immune tolerance towards both dietary antigens and commensal bacteria. Together, our study has uncovered an important role for unique gut bacteria to increase serotonin availability in the neonatal gut and a novel function of gut serotonin to shape T cell response to dietary antigens and commensal bacteria to promote immune tolerance in early life.
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| Overall design |
Small intestine luminal contents were harvested from adult (8 weeks) and neonatal (14 days) mice. DNA was extracted from luminal contents and the V4-V5 region of the 16S rRNA gene was amplified using universal primers and sequenced on an Illumina MiSeq sequencer.
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| Contributor(s) |
Sanidad KZ, Rager SL, Carrow HC, Ananthanarayanan A, Callaghan R, Hart LR, Li T, Ravisankar P, Brown JA, Amir M, Jin JC, Savage AR, Luo R, Rowdo FM, Martin ML, Silver RB, Guo C, Krumsiek J, Inohara N, Zeng MY |
| Citation missing |
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| Submission date |
Nov 27, 2023 |
| Last update date |
Jan 31, 2024 |
| Contact name |
Katherine Sanidad |
| E-mail(s) |
kzs4001@med.cornell.edu
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| Organization name |
Weill Cornell Medicine
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| Street address |
413 E69th St
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| City |
New York |
| ZIP/Postal code |
11365 |
| Country |
USA |
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| Platforms (1) |
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| Samples (8)
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| This SubSeries is part of SuperSeries: |
| GSE248694 |
Gut bacteria-derived serotonin promotes immune tolerance in early life through regulation of neonatal gut T cells |
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| Relations |
| BioProject |
PRJNA1045602 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE248690_16S_processed_F1.xlsx |
789.6 Kb |
(ftp)(http) |
XLSX |
SRA Run Selector |
| Raw data are available in SRA |
| Processed data are available on Series record |
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