Cited by 451Neuroscience and Neuropharmacology ResearchNeurotransmitter Receptor Influence on BehaviorMemory and Neural Mechanisms

A whole-brain atlas of inputs to serotonergic neurons of the dorsal and median raphe nuclei

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Pollak Dorocic, Iskra, Fürth, Daniel, Xuan, Yang, Johansson, Yvonne, Pozzi, Laura, Silberberg, Gilad, Carlén, Marie, Meletis, Konstantinos·2014·Neuron

Abstract

The serotonin system is proposed to regulate physiology and behavior and to underlie mood disorders; nevertheless, the circuitry controlling serotonergic neurons remains uncharacterized. We therefore generated a comprehensive whole-brain atlas defining the monosynaptic inputs onto forebrain-projecting serotonergic neurons of dorsal versus median raphe based on a genetically restricted transsynaptic retrograde tracing strategy. We identified discrete inputs onto serotonergic neurons from forebrain and brainstem neurons, with specific inputs from hypothalamus, cortex, basal ganglia, and midbrain, displaying a greater than anticipated complexity and diversity in cell-type-specific connectivity. We identified and functionally confirmed monosynaptic glutamatergic inputs from prefrontal cortex and lateral habenula onto serotonergic neurons as well as a direct GABAergic input from striatal projection neurons. In summary, our findings emphasize the role of hyperdirect inputs to serotonergic neurons. Cell-type-specific classification of connectivity patterns will allow for further functional analysis of the diverse but specific inputs that control serotonergic neurons during behavior.

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Crossref · 10.1016/j.neuron.2014.07.002

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  • Serotonergic and dopaminergic markers are jointly present in their developmental origins, guidepost areas, as well as within the subdomains of the PFC, which is important for their intricate interaction later in life to establish higher cognitive functions.

    “Serotonergic and dopaminergic markers are jointly present in their developmental origins, guidepost areas, as well as within the subdomains of the PFC, which is important for their intricate interaction later in life to establish higher cognitive functions [209, 232–234].”

    From Development of prefrontal cortex (2022) · cites this paper as [209]

  • DRN serotonergic neurons are controlled by glutamatergic projections from the PFC.

    “In addition, DRN serotonergic neurons are controlled by glutamatergic projections from the PFC [152, 207–209].”

    From Development of prefrontal cortex (2022) · cites this paper as [209]

  • The raphe nuclei play a critical role in regulating serotoninergic tone.

    “which are critically involved in regulating serotoninergic tone (40,41)”
  • DR serotonin neurons as a whole receive monosynaptic inputs from diverse brain regions.

    “DR serotonin neurons as a whole receive monosynaptic inputs from diverse brain regions (Ogawa et al., 2014; Pollak Dorocic et al., 2014; Weissbourd et al., 2014).”

    From Anatomically defined and functionally distinct dorsal raphe serotonin sub-systems (2018) · cites this paper as Pollak Dorocic et al., 2014

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Authors
Pollak Dorocic, I., Fürth, D., Xuan, Y., Johansson, Y., Pozzi, L., Silberberg, G., Carlén, M., & Meletis, K.
Affiliations
Karolinska Institutet (SE)
Corresponding author
Meletis, Konstantinos
Venue
Neuron
Publisher
Elsevier BV
Published
2014-08
Volume
83
Issue
3
Pages
663-678
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2010915373
Cited by
451
References
84
Citations by year
2026: 22 · 2025: 29 · 2024: 44 · 2023: 40 · 2022: 20 · 2021: 44 · 2020: 40 · 2019: 43 · 2018: 42 · 2017: 41 · 2016: 38 · 2015: 44 · 2014: 4
FWCI
19.34
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Stiftelsen för Strategisk Forskning
  • Karolinska Institutet
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
serotonergic neurons, dorsal raphe nucleus, median raphe nucleus, serotonergic system, monosynaptic input, glutamatergic input, GABAergic input, prefrontal cortex, lateral habenula, striatal projection neurons, hypothalamus, basal ganglia, midbrain, hyperdirect pathway
MeSH terms
Animals, Brain Mapping, Nerve Tissue, Neural Pathways, Serotonin, Chromosome Pairing, Mice, Serotonergic Neurons, Dorsal Raphe Nucleus

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