Cited by 450Neurotransmitter Receptor Influence on BehaviorTreatment of Major DepressionNeuroscience and Neuropharmacology Research

5-HT1A autoreceptor levels determine vulnerability to stress and response to antidepressants

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Richardson-Jones, Jesse W., Craige, Caryne P., Guiard, Bruno P., Stephen, Alisson, Metzger, Kayla L., Kung, Hank F., Gardier, Alain M., Dranovsky, Alex +4 more·2010·Neuron

Abstract

Most depressed patients don't respond to their first drug treatment, and the reasons for this treatment resistance remain enigmatic. Human studies implicate a polymorphism in the promoter of the serotonin-1A (5-HT(1A)) receptor gene in increased susceptibility to depression and decreased treatment response. Here we develop a new strategy to manipulate 5-HT(1A) autoreceptors in raphe nuclei without affecting 5-HT(1A) heteroreceptors, generating mice with higher (1A-High) or lower (1A-Low) autoreceptor levels. We show that this robustly affects raphe firing rates, but has no effect on either basal forebrain serotonin levels or conflict-anxiety measures. However, compared to 1A-Low mice, 1A-High mice show a blunted physiological response to acute stress, increased behavioral despair, and no behavioral response to antidepressant, modeling patients with the 5-HT(1A) risk allele. Furthermore, reducing 5-HT(1A) autoreceptor levels prior to antidepressant treatment is sufficient to convert nonresponders into responders. These results establish a causal relationship between 5-HT(1A) autoreceptor levels, resilience under stress, and response to antidepressants.

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Crossref · 10.1016/j.neuron.2009.12.003

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  • Reduced raphe volume may alter serotonin signaling across the brain, contributing to stress reactivity and depressive-like behavior.

    “Reduced raphe volume may affect serotonin signaling throughout the brain, contributing to stress reactivity and to the development of depressive-like behavior (58).”

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Authors
Richardson-Jones, J. W., Craige, C. P., Guiard, B. P., Stephen, A., Metzger, K. L., Kung, H. F., Gardier, A. M., Dranovsky, A., David, D. J., Beck, S. G., Hen, R., & Leonardo, E. D.
Affiliations
  • Columbia University (US)
  • Children's Hospital of Philadelphia (US)
  • Université Paris-Sud (FR)
  • University of Pennsylvania (US)
Corresponding author
Hen, René
Venue
Neuron
Publisher
Elsevier BV
Published
2010-01
Volume
65
Issue
1
Pages
40-52
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2158770881
Cited by
450
References
70
Citations by year
2026: 14 · 2025: 18 · 2024: 20 · 2023: 20 · 2022: 22 · 2021: 32 · 2020: 21 · 2019: 27 · 2018: 23 · 2017: 29 · 2016: 26 · 2015: 26 · 2014: 35 · 2013: 32 · 2012: 32
FWCI
17.54
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • AstraZeneca (CU08-8439)
  • National Institutes of Health (K08 MH076083, R01 MH068542, R01 MH075047)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
5-HT1A autoreceptors, antidepressant treatment resistance, depression, stress resilience, behavioral despair, raphe nuclei, anxiety, antidepressant response, 5-HT1A receptor
MeSH terms
Animals, Antidepressive Agents, Behavior, Animal, Depressive Disorder, Fluoxetine, Humans, Mice, Transgenic, Neurons, Polymorphism, Genetic, Raphe Nuclei, Serotonin, Stress, Psychological, Autoreceptors, Patch-Clamp Techniques, Receptor, Serotonin, 5-HT1A, Mice

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