Cited by 97Neuropeptides and Animal PhysiologyNeuroscience and Neuropharmacology ResearchNeural dynamics and brain function

Cortical sources of CRF, NKB, and CCK and their effects on pyramidal cells in the neocortex

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Gallopin, Thierry, Geoffroy, Hélène, Rossier, Jean, Lambolez, Bertrand·2006·Cerebral Cortex

Abstract

In order to investigate how neuropeptide transmission can modulate the neocortical network, we mapped the expression of neurokinin (NK) B, cholecystokinin (CCK), and corticotropin-releasing factor (CRF) and their receptors to neuronal types using patch-clamp and single-cell reverse transcription-polymerase chain reaction in acute slices of rat neocortex. Classification of neurons by unsupervised clustering based on the analysis of multiple electrophysiological and molecular properties disclosed 3 GABAergic interneuron clusters and 1 pyramidal cell cluster. The 3 neuropeptides were expressed in a cluster of interneurons characteristically expressing vasoactive intestinal peptide. CRF was additionally found in a cluster containing almost exclusively somatostatin-expressing interneurons, whereas CCK was present in all clusters. The respective receptors of these peptides, NK-3, CCK-B, and CRF-1, were essentially expressed in pyramidal cells. At -60 mV, pyramidal cells were weakly depolarized by each of these peptides. When pyramidal neurons were maintained to about 5 mV below spike threshold, depolarization induced by each peptide resulted in a long-lasting action potential discharge. Neuropeptide effects were prevented by selective antagonists of NK-3, CCK-B, and CRF-1 receptors. These results suggest that pyramidal neurons are the primary target of NKB, CCK, and CRF in the neocortex. They further indicate that specific interneuron types coordinate the release of these peptides and can induce a long-lasting increase of the excitability of the neocortical network.

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  • Published physiological results on cortical neuropeptide signaling are surprisingly rare given the breadth of neuroscientific interest in cortex.

    “published physiological results are surprisingly rare given the breadth of neuroscientific interest in cortex.”

    From Single-cell transcriptomic evidence for dense intracortical neuropeptide networks (2019) · cites this paper as Gallopin et al., 2006

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Authors
Gallopin, T., Geoffroy, H., Rossier, J., & Lambolez, B.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
Gallopin, Thierry
Venue
Cerebral Cortex
Published
2005-12-07
Volume
16
Issue
10
Pages
1440-1452
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W2146748168
Cited by
97
References
109
Citations by year
2026: 3 · 2025: 3 · 2024: 2 · 2023: 7 · 2022: 6 · 2021: 6 · 2020: 5 · 2019: 3 · 2018: 5 · 2017: 3 · 2016: 3 · 2015: 6 · 2014: 10 · 2013: 5 · 2012: 5
FWCI
0.84
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Cerebral Cortex (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
corticotropin-releasing factor, neurokinin B, cholecystokinin, neuropeptide receptors, neocortical pyramidal cells, GABAergic interneurons, vasoactive intestinal peptide, somatostatin, NK3 receptor, CCK-B receptor, neuronal excitability, receptor antagonists
MeSH terms
Action Potentials, Animals, Cells, Cultured, Cholecystokinin, Corticotropin-Releasing Hormone, Synaptic Transmission, Tissue Distribution, Neurokinin B, Rats, Wistar, Pyramidal Cells, Neurotransmitter Agents, Neocortex, Rats

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