Cited by 64Stress Responses and CortisolAdrenal Hormones and DisordersEstrogen and related hormone effects

Glucocorticoid receptor dimerization is required for proper recovery of LPS-induced inflammation, sickness behavior and metabolism in mice

Silverman, M N, Mukhopadhyay, P, Belyavskaya, E, Tonelli, L H, Revenis, B D, Doran, J H, Ballard, B E, Tam, J +2 more·2013·Molecular Psychiatry

Abstract

Endogenous glucocorticoids are essential for mobilizing energy resources, restraining inflammatory responses and coordinating behavior to an immune challenge. Impaired glucocorticoid receptor (GR) function has been associated with impaired metabolic processes, enhanced inflammation and exaggerated sickness and depressive-like behaviors. To discern the molecular mechanisms underlying GR regulation of physiologic and behavioral responses to a systemic immune challenge, GR(dim) mice, in which absent GR dimerization leads to impaired GR-DNA-binding-dependent mechanisms but intact GR protein-protein interactions, were administered low-dose lipopolysaccharide (LPS). GR(dim)-LPS mice exhibited elevated and prolonged levels of plasma corticosterone (CORT), interleukin (IL)-6 and IL-10 (but not plasma tumor necrosis factor-α (TNFα)), enhanced early expression of brain TNFα, IL-1β and IL-6 mRNA levels, and impaired later central TNFα mRNA expression. Exaggerated sickness behavior (lethargy, piloerection, ptosis) in the GR(dim)-LPS mice was associated with increased early brain proinflammatory cytokine expression and late plasma CORT levels, but decreased late brain TNFα expression. GR(dim)-LPS mice also exhibited sustained locomotor impairment in the open field, body weight loss and metabolic alterations measured by indirect calorimetry, as well as impaired thermoregulation. Taken together, these data indicate that GR dimerization-dependent DNA-binding mechanisms differentially regulate systemic and central cytokine expression in a cytokine- and time-specific manner, and are essential for the proper regulation and recovery of multiple physiologic responses to low-dose endotoxin. Moreover, these results support the concept that GR protein-protein interactions are not sufficient for glucocorticoids to exert their full anti-inflammatory effects and suggest that glucocorticoid responses limited to GR monomer-mediated transcriptional effects could predispose individuals to prolonged behavioral and metabolic sequelae of an enhanced inflammatory state.

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Crossref · 10.1038/mp.2012.131

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Authors
Silverman, M. N., Mukhopadhyay, P., Belyavskaya, E., Tonelli, L. H., Revenis, B. D., Doran, J. H., Ballard, B. E., Tam, J., Pacher, P., & Sternberg, E. M.
Affiliations
  • National Institutes of Health (US)
  • University of Maryland, Baltimore (US)
Corresponding author
Sternberg, E M
Venue
Molecular Psychiatry
Published
2012-10-23
Volume
18
Issue
9
Pages
1006-1017
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W2003936181
Cited by
64
References
107
Citations by year
2026: 2 · 2024: 5 · 2023: 1 · 2022: 5 · 2021: 4 · 2020: 11 · 2019: 4 · 2018: 6 · 2017: 3 · 2016: 7 · 2015: 9 · 2014: 5 · 2013: 2
FWCI
2.10
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Henry M. Jackson Foundation
  • National Institutes of Health
  • Uniformed Services University of the Health Sciences
  • Center for Neuroscience and Regenerative Medicine
  • National Institute on Alcohol Abuse and Alcoholism
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
Keywords
glucocorticoid receptor, receptor dimerization, lipopolysaccharide, endotoxemia, sickness behavior, inflammation, corticosterone, cytokine expression, brain cytokines, thermoregulation, metabolic changes, locomotor impairment, weight loss, anti-inflammatory activity
MeSH terms
Animals, Body Temperature, Body Weight, Brain, Carbon Dioxide, Corticosterone, Gene Expression Regulation, Inflammation, Lipopolysaccharides, Male, Motor Activity, Oxygen Consumption, Receptors, Glucocorticoid, RNA, Messenger, Telemetry, Time Factors, Cytokines, Dimerization, Mice, Illness Behavior

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