Cited by 84Treatment of Major DepressionReceptor Mechanisms and SignalingNeuroscience and Neuropharmacology Research

Postmortem Brain Tissue of Depressed Suicides Reveals Increased Gsα Localization in Lipid Raft Domains Where It Is Less Likely to Activate Adenylyl Cyclase

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Donati, Robert J., Dwivedi, Yogesh, Roberts, Rosalinda C., Conley, Robert R., Pandey, Ghanshyam N., Rasenick, Mark M.·2008·The Journal of Neuroscience

Abstract

Recent in vivo and in vitro studies have demonstrated that Gsα migrates from a Triton X-100 (TX-100)-insoluble membrane domain (lipid raft) to a TX-100-soluble nonraft membrane domain in response to chronic, but not acute, treatment with tricyclic or selective serotonin reuptake inhibitor antidepressants. This migration resulted in a more facile association with adenylyl cyclase. Our hypothesis is that Gsα may be ensconced, to a greater extent, in lipid rafts during depression, and that one action of chronic antidepressant treatment is to reverse this. In this postmortem study, we examined Gsα membrane localization in the cerebellum and prefrontal cortex of brains from nonpsychiatric control subjects and suicide cases with confirmed unipolar depression. Sequential TX-100 and TX-114 detergent extractions were performed on the brain tissue. In the cerebellum, the ratio of TX-100/TX-114-soluble Gsα is ∼2:1 for control versus depressed suicides. Results with prefrontal cortex samples from each group demonstrate a similar trend. These data suggest that depression localizes Gsα to a membrane domain (lipid rafts) where it is less likely to couple to adenylyl cyclase and that antidepressants may upregulate Gsα signaling via disruption of membrane microenvironments. Raft localization of Gsα in human peripheral tissue may thus serve as a biomarker for depression and as a harbinger of antidepressant responsiveness.

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Crossref · 10.1523/jneurosci.5713-07.2008

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Authors
Donati, R. J., Dwivedi, Y., Roberts, R. C., Conley, R. R., Pandey, G. N., & Rasenick, M. M.
Affiliations
  • University of Illinois Chicago (US)
  • University of Alabama (US)
  • Eli Lilly (United States) (US)
Venue
The Journal of Neuroscience
Published
2008-03-19
Volume
28
Issue
12
Pages
3042-3050
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2058245744
Cited by
84
References
64
Citations by year
2026: 1 · 2025: 6 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 5 · 2020: 3 · 2019: 2 · 2018: 5 · 2017: 6 · 2016: 2 · 2015: 8 · 2014: 8 · 2013: 4 · 2012: 4
FWCI
5.39
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
  • American Foundation for Suicide Prevention
  • U.S. Public Health Service (MH 39595)
  • National Institute of Mental Health (R01 MH60744, R01-MH48153, MH 39595, R01MH068777, R01MH048153, K01MH001836, R01MH060744, MH 01836, MH60744, MH 068777, R01MH039595)
  • National Institute on Drug Abuse (DA020568, R21DA020568)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
Gs protein, lipid rafts, major depressive disorder, suicide, adenylate cyclase, membrane localization, antidepressants, cerebellum, prefrontal cortex, Triton X-100 extraction, depression biomarkers
MeSH terms
Adult, Aged, Aged, 80 and over, Analysis of Variance, Brain, Depression, Female, Gene Expression Regulation, Humans, Male, Middle Aged, Postmortem Changes, Suicide, Case-Control Studies, GTP-Binding Protein alpha Subunits, Gs, Membrane Microdomains

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