Cited by 45Genetic Associations and EpidemiologyGenetic diversity and population structureStress Responses and Cortisol

Adaptive variation regulates the expression of the human SGK1 gene in response to stress

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Luca, Francesca, Kashyap, Sonal, Southard, Catherine, Zou, Min, Witonsky, David, Di Rienzo, Anna, Conzen, Suzanne D.·2009·PLoS Genetics

Abstract

The Serum and Glucocorticoid-regulated Kinase1 (SGK1) gene is a target of the glucocorticoid receptor (GR) and is central to the stress response in many human tissues. Because environmental stress varies across habitats, we hypothesized that natural selection shaped the geographic distribution of genetic variants regulating the level of SGK1 expression following GR activation. By combining population genetics and molecular biology methods, we identified a variant (rs9493857) with marked allele frequency differences between populations of African and European ancestry and with a strong correlation between allele frequency and latitude in worldwide population samples. This SNP is located in a GR-binding region upstream of SGK1 that was identified using a GR ChIP-chip. SNP rs9493857 also lies within a predicted binding site for Oct1, a transcription factor known to cooperate with the GR in the transactivation of target genes. Using ChIP assays, we show that both GR and Oct1 bind to this region and that the ancestral allele at rs9493857 binds the GR-Oct1 complex more efficiently than the derived allele. Finally, using a reporter gene assay, we demonstrate that the ancestral allele is associated with increased glucocorticoid-dependent gene expression when compared to the derived allele. Our results suggest a novel paradigm in which hormonal responsiveness is modulated by sequence variation in the regulatory regions of nuclear receptor target genes. Identifying such functional variants may shed light on the mechanisms underlying inter-individual variation in response to environmental stressors and to hormonal therapy, as well as in the susceptibility to hormone-dependent diseases.

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  • A key gene involved in mediating these effects shows evidence of recent adaptive variation across human populations.

    “Interestingly, a key gene involved in mediating these effects shows evidence of recent adaptive variation across human populations [52].”

    From Human Social Genomics (2014) · cites this paper as [52]

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Authors
Luca, F., Kashyap, S., Southard, C., Zou, M., Witonsky, D., Di Rienzo, A., & Conzen, S. D.
Affiliations
University of Chicago (US)
Corresponding author
Conzen, Suzanne D.
Venue
PLoS Genetics
Published
2009-05-22
Volume
5
Issue
5
Pages
e1000489
ISSN
  • 1553-7390 (ISSN-L)
  • 1553-7404
OpenAlex
W2058917347
Cited by
45
References
92
Citations by year
2026: 2 · 2025: 1 · 2024: 1 · 2022: 2 · 2021: 1 · 2020: 1 · 2019: 5 · 2018: 4 · 2017: 1 · 2016: 2 · 2015: 2 · 2014: 4 · 2013: 6 · 2012: 3
FWCI
2.53
Type
journal article
Language
en
Open access
Locations
  • PLoS Genetics (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Knowledge@UChicago (University of Chicago) (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • University of Chicago (cc-by)
Funders
  • American Heart Association
  • University of Chicago (P30 CA014599)
  • Wellcome Trust (068545/Z/02), G0000934, 068545)
  • National Institutes of Health (G0000934)
  • Medical Research Council (G0000934)
  • National Cancer Institute (R01CA089208, P50CA125183, P30CA014599)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK056670)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
SGK1, glucocorticoid receptor, OCT1, single nucleotide polymorphisms, glucocorticoid response element, transcriptional regulation, natural selection, allele frequency variation, latitude, stress response
MeSH terms
Serum-Glucocorticoid Regulated Kinases, Alleles, Base Sequence, Binding Sites, Cell Line, DNA, Enhancer Elements, Genetic, Female, Gene Frequency, Humans, Neurosecretory Systems, Receptors, Glucocorticoid, Stress, Physiological, Genetic Variation, Signal Transduction, Gene Expression, Protein Serine-Threonine Kinases, Immediate-Early Proteins, Genetic Predisposition to Disease, Oligonucleotide Array Sequence Analysis, Polymorphism, Single Nucleotide, Black People, White People, Octamer Transcription Factor-1

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