Cited by 79Estrogen and related hormone effectsGenomics and Chromatin DynamicsT-cell and B-cell Immunology

Expression of the glucocorticoid receptor from the 1A promoter correlates with T lymphocyte sensitivity to glucocorticoid-induced cell death

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Purton, Jared F, Monk, Julie A, Liddicoat, Douglas R, Kyparissoudis, Konstantinos, Sakkal, Samy, Richardson, Samantha J, Godfrey, Dale I, Cole, Timothy J·2004·The Journal of Immunology

Abstract

Glucocorticoid (GC) hormones cause pronounced T cell apoptosis, particularly in immature thymic T cells. This is possibly due to tissue-specific regulation of the glucocorticoid receptor (GR) gene. In mice the GR gene is transcribed from five separate promoters designated: 1A, 1B, 1C, 1D, and 1E. Nearly all cells express GR from promoters 1B–1E, but the activity of the 1A promoter has only been reported in the whole thymus or lymphocyte cell lines. To directly assess the role of GR promoter use in sensitivity to glucocorticoid-induced cell death, we have compared the activity of the GR 1A promoter with GC sensitivity in different mouse lymphocyte populations. We report that GR 1A promoter activity is restricted to thymocyte and peripheral lymphocyte populations and the cortex of the brain. The relative level of expression of the 1A promoter to the 1B–1E promoters within a lymphocyte population was found to directly correlate with susceptibility to GC-induced cell death, with the extremely GC-sensitive CD4+CD8+ thymocytes having the highest levels of GR 1A promoter activity, and the relatively GC-resistant αβTCR+CD24int/low thymocytes and peripheral T cells having the lowest levels. DNA sequencing of the mouse GR 1A promoter revealed a putative glucocorticoid-response element. Furthermore, GR 1A promoter use and GR protein levels were increased by GC treatment in thymocytes, but not in splenocytes. These data suggest that tissue-specific differences in GR promoter use determine T cell sensitivity to glucocorticoid-induced cell death.

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Crossref · 10.4049/jimmunol.173.6.3816

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  • Glucocorticoids reduce circulating T cells by enhancing their migration to bone marrow and secondary lymphoid organs and trigger T cell apoptosis through up-regulation of BIM.

    “In contrast to neutrophils, GCs reduce the levels of circulating T cells by enhancing their migration back to the bone-marrow and secondary lymphoid organs (47, 48). GCs also trigger T cells apoptosis, notably through the up-regulation of BIM (49, 50).”

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Authors
Purton, J. F., Monk, J. A., Liddicoat, D. R., Kyparissoudis, K., Sakkal, S., Richardson, S. J., Godfrey, D. I., & Cole, T. J.
Affiliations
  • The University of Melbourne (AU)
  • Monash University (AU)
Venue
The Journal of Immunology
Published
2004-09
Volume
173
Issue
6
Pages
3816-3824
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2168469696
Cited by
79
References
41
Citations by year
2025: 1 · 2024: 2 · 2023: 1 · 2022: 2 · 2021: 5 · 2020: 6 · 2019: 6 · 2018: 5 · 2017: 4 · 2016: 5 · 2015: 4 · 2014: 3 · 2013: 3 · 2012: 7
FWCI
2.49
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • RMIT Research Repository (RMIT University Library) (submittedVersion)
  • Figshare (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
glucocorticoid receptor, glucocorticoid-induced cell death, T cell apoptosis, thymocytes, CD4+CD8+ thymocytes, glucocorticoid response element, tissue-specific gene expression, splenocytes, thymus cortex, glucocorticoid sensitivity
MeSH terms
Animals, Base Sequence, Cell Differentiation, Cell Survival, Cells, Cultured, Cerebral Cortex, Dexamethasone, Dose-Response Relationship, Immunologic, Glucocorticoids, Molecular Sequence Data, Organ Specificity, Promoter Regions, Genetic, Receptors, Glucocorticoid, RNA, Messenger, Spleen, T-Lymphocytes, Up-Regulation, Cell Death, Sequence Analysis, DNA, Response Elements, Mice

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