ArticleBlood2007
Serotonin provides an accessory signal to enhance T-cell activation by signaling through the 5-HT7 receptor.
Article in Blood, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01650311 (Investigating Serotonin Signalling in IBD Patients), which is not on this map. Cited by 169 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Investigating Serotonin Signalling in IBD Patients
Who cites it
169 citing papers in PubMed, 345 citations in OpenAlex.
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- SLC22A3 regulates ferroptosis in the mesenchymal subtype of triple-negative breast cancer by modulating histone H3K4 serotonylation.Cell death & disease · 2026Article
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- Insights into small-molecule neurotransmitter levels and distribution during tissue regeneration in an ear pinna model in mice.Scientific reports · 2026Article
- The neuroimmune axis in breast cancer: from mechanistic insights to clinical applications.BMC medicine · 2026Review
- The role of peripheral serotonin in SARS-CoV-2 infectivity, COVID-19 treatment and long COVID.Immunology and cell biology · 2026Review
- Serotonin transporter SERT: a novel immune checkpoint for CD8Journal for immunotherapy of cancer · 2026Article
- Role of the neurotransmitter-receptor pathway in T-cell tumor immunology and cancer immunotherapy.Acta biochimica et biophysica Sinica · 2026Review
- Metabolic Checkpoints in CD8International journal of biological sciences · 2026Review
- Neurotransmitters and Immunity: Molecular Mechanisms, Biological Functions, Diseases, and Potential Therapeutic Targets.MedComm · 2025Review
- Integrative neuroimmunology reveals leukocyte-expressing PAX6 as a critical predictor of major depressive disorder.Translational psychiatry · 2025Article
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- Beyond the gut: decoding the gut-immune-brain axis in health and disease.Cellular & molecular immunology · 2025Review
- The neuro-immune axis in cancer: from mechanisms to therapeutic opportunities.Journal of hematology & oncology · 2025Review
- HAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Enteroendocrine cell differentiation: Implications for human disease.Molecular and cellular endocrinology · 2025Review
- Review
109 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 3 institutions in 2 countries.
Funding
Abstract
Although typically considered a neurotransmitter, there is substantial evidence that serotonin (5-HT) plays an important role in the pathogenesis of inflammatory disorders. Despite these findings, the precise role of 5-HT in modulating immune function, particularly T-cell function, remains elusive. We report that naive T cells predominantly express the type 7 5-HT receptor (5-HTR), and expression of this protein is substantially enhanced on T-cell activation. In addition, T-cell activation leads to expression of the 5-HT(1B) and 5-HT(2A) receptors. Significantly, exogenous 5-HT induces rapid phosphorylation of extracellular signal-regulated kinase-1 and -2 (ERK1/2) and IkappaBalpha in naive T cells. 5-HT-induced activation of ERK1/2 and NFkappaB is inhibited by preincubation with a specific 5-HT(7) receptor antagonist. Thus, 5-HT signaling via the 5-HT(7) receptor may contribute to early T-cell activation. In turn, 5-HT synthesized by T cells may act as an autocrine factor. Consistent with this hypothesis, we found that inhibition of 5-HT synthesis with parachlorophenylalanine (PCPA) impairs T-cell activation and proliferation. Combined, these data demonstrate a fundamental role for 5-HT as an intrinsic cofactor in T-cell activation and function and suggest an alternative mechanism through which immune function may be regulated by indoleamine 2,3-dioxygenase-mediated catabolism of tryptophan.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.