Cited by 317T-cell and B-cell ImmunologyPsoriasis: Treatment and PathogenesisCytokine Signaling Pathways and Interactions

The locus ceruleus norepinephrine system: Functional organization and potential clinical significance

Benarroch, Eduardo E.·2009·Neurology

Abstract

IL-9–producing Th cells, termed Th9 cells, contribute to immunity against parasites and cancers but have detrimental roles in allergic disease and colitis. Th9 cells differentiate in response to IL-4 and TGF-β, but these signals are insufficient to drive Th9 differentiation in the absence of IL-2. IL-2–induced STAT5 activation is required for chromatin accessibility within Il9 enhancer and promoter regions and directly transactivates the Il9 locus. STAT5 also suppresses gene expression during Th9 cell development, but these roles are less well defined. In this study, we demonstrate that human allergy-associated Th9 cells exhibited a signature of STAT5-mediated gene repression that is associated with the silencing of a Th17-like transcriptional signature. In murine Th9 cell differentiation, blockade of IL-2/STAT5 signaling induced the expression of IL-17 and the Th17-associated transcription factor Rorγt. However, IL-2–deprived Th9 cells did not exhibit a significant Th17- or STAT3-associated transcriptional signature. Consistent with these observations, differentiation of IL-17–producing cells under these conditions was STAT3-independent but did require Rorγt and BATF. Furthermore, ectopic expression of Rorγt and BATF partially rescued IL-17 production in STAT3-deficient Th17 cells, highlighting the importance of these factors in this process. Although STAT3 was not required for the differentiation of IL-17–producing cells under IL-2–deprived Th9 conditions, their prolonged survival was STAT3-dependent, potentially explaining why STAT3-independent IL-17 production is not commonly observed in vivo. Together, our data suggest that IL-2/STAT5 signaling plays an important role in controlling the balance of a Th9 versus a Th17-like differentiation program in vitro and in allergic disease.

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Crossref · 10.1212/wnl.0b013e3181c2937c

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Authors
Benarroch, E. E.
Affiliations
Mayo Clinic (US)
Corresponding author
Benarroch, Eduardo E.
Venue
Neurology
Published
2009-11-17
Volume
73
Issue
20
Pages
1699-1704
ISSN
  • 0028-3878 (ISSN-L)
  • 1526-632X
OpenAlex
W1969610953
Cited by
317
References
29
Citations by year
2026: 14 · 2025: 17 · 2024: 17 · 2023: 32 · 2022: 23 · 2021: 24 · 2020: 32 · 2019: 22 · 2018: 32 · 2017: 17 · 2016: 16 · 2015: 13 · 2014: 19 · 2013: 9 · 2012: 13
FWCI
4.31
Type
journal article
Language
en
Open access
closed
Locations
  • Neurology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
Keywords
locus coeruleus, norepinephrine, noradrenergic neurons, noradrenergic neurotransmission
MeSH terms
Alzheimer Disease, Animals, Arousal, Attention, Brain, Humans, Locus Coeruleus, Memory, Neural Pathways, Neurons, Norepinephrine, Parkinson Disease, Stress, Psychological, Prosencephalon

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