Cited by 157Neuroinflammation and Neurodegeneration MechanismsThermal Regulation in MedicineTryptophan and brain disorders

Endothelial-Specific Knockdown of Interleukin-1 (IL-1) Type 1 Receptor Differentially Alters CNS Responses to IL-1 Depending on Its Route of Administration

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Ching, San, Zhang, Hao, Belevych, Natalya, He, Lingli, Lai, Wenmin, Pu, Xin-an, Jaeger, Laura B., Chen, Qun +1 more·2007·The Journal of Neuroscience

Abstract

Interleukin-1 (IL-1) has been implicated as a critical mediator of neuroimmune communication. In the brain, the functional receptor for IL-1, type 1 IL-1 receptor (IL-1R1), is localized primarily to the endothelial cells. In this study, we created an endothelial-specific IL-1R1 knockdown model to test the role of endothelial IL-1R1 in mediating the effects of IL-1. Neuronal activation in the hypothalamus was measured by c-fos expression in the paraventricular nucleus and the ventromedial preoptic area. In addition, two specific sickness symptoms, febrile response and reduction of locomotor activity, were studied. Intracerebroventricular injection of IL-1 induced leukocyte infiltration into the CNS, activation of hypothalamic neurons, fever, and reduced locomotor activity in normal mice. Endothelial-specific knockdown of IL-1R1 abrogated all these responses. Intraperitoneal injection of IL-1 also induced neuronal activation in the hypothalamus, fever, and reduced locomotor activity, without inducing leukocyte infiltration into the brain. Endothelial-specific knockdown of IL-1R1 suppressed intraperitoneal IL-1-induced fever, but not the induction of c-fos in hypothalamus. When IL-1 was given intravenously, endothelial knockdown of IL-1R1 abolished intravenous IL-1-induced CNS activation and the two monitored sickness symptoms. In addition, endothelial-specific knockdown of IL-1R1 blocked the induction of cyclooxygenase-2 expression induced by all three routes of IL-1 administration. These results show that the effects of intravenous and intracerebroventricular IL-1 are mediated by endothelial IL-1R1, whereas the effects of intraperitoneal IL-1 are partially dependent on endothelial IL-1R1.

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Crossref · 10.1523/jneurosci.3357-07.2007

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  • The CNS is affected by cytokines through a variety of mechanisms, including direct transfer across the BBB, stimulation of CVOs, nerve stimulation, or release from infiltrating or resident immune cells.

    “The CNS is affected by cytokines (97), and this can occur through a variety of different mechanisms, including direct transfer across the BBB, stimulation of CVOs, nerve stimulation, or release from infiltrating or resident immune cells, among others (98).”

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Authors
Ching, S., Zhang, H., Belevych, N., He, L., Lai, W., Pu, X.-A., Jaeger, L. B., Chen, Q., & Quan, N.
Affiliations
  • The Ohio State University (US)
  • Saint Louis University (US)
Venue
The Journal of Neuroscience
Published
2007-09-26
Volume
27
Issue
39
Pages
10476-10486
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2047319988
Cited by
156
References
39
Citations by year
2026: 3 · 2025: 2 · 2024: 4 · 2023: 5 · 2022: 6 · 2021: 9 · 2020: 10 · 2019: 4 · 2018: 7 · 2017: 16 · 2016: 9 · 2015: 13 · 2014: 18 · 2013: 7 · 2012: 10
FWCI
5.51
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Allergy and Infectious Diseases (R01AI059089)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Critical Care and Intensive Care Medicine › Thermal Regulation in Medicine
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
interleukin-1, endothelial cells, neuroimmune interactions, hypothalamus, c-fos, paraventricular nucleus, fever, locomotor activity, leukocyte infiltration, cyclooxygenase-2, route of administration, intracerebroventricular administration, intraperitoneal injection, intravenous injection, sickness behavior
MeSH terms
Animals, Central Nervous System, Fever, Hypothalamus, Immunologic Factors, Interleukin-1, Mice, Transgenic, Motor Activity, Neuroimmunomodulation, Genes, fos, Endothelial Cells, Mice, Cyclooxygenase 2, Receptors, Interleukin-1 Type I

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