Cited by 119Neurobiology and Insect Physiology ResearchNeuroscience and Neuropharmacology ResearchNeuropeptides and Animal Physiology

Synaptic and peptidergic connectome of a neurosecretory center in the annelid brain

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Williams, Elizabeth A, Verasztó, Csaba, Jasek, Sanja, Conzelmann, Markus, Shahidi, Réza, Bauknecht, Philipp, Mirabeau, Olivier, Jékely, Gáspár·2017·eLife

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Abstract

Abstract Neurosecretory centres in animal brains use peptidergic signalling to influence physiology and behaviour. Understanding neurosecretory centre function requires mapping cell types, synapses, and peptidergic networks. Here we use electron microscopy and gene expression mapping to analyse the synaptic and peptidergic connectome of an entire neurosecretory centre. We mapped 78 neurosecretory neurons in the brain of larval Platynereis dumerilii , a marine annelid. These neurons form an anterior neurosecretory organ expressing many neuropeptides, including hypothalamic peptide orthologues and their receptors. Analysis of peptide-receptor pairs revealed sparsely connected networks linking specific neuronal subsets. We experimentally analysed one peptide-receptor pair and found that a neuropeptide can couple neurosecretory and synaptic brain signalling. Our study uncovered extensive non-synaptic signalling within a neurosecretory centre and its connection to the synaptic brain.

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Authors
Williams, E. A., Verasztó, C., Jasek, S., Conzelmann, M., Shahidi, R., Bauknecht, P., Mirabeau, O., & Jékely, G.
Affiliations
  • Max Planck Institute for Developmental Biology (DE)
  • University of Exeter (GB)
  • Inserm (FR)
Corresponding author
Jékely, Gáspár
Venue
eLife
Published
2017-12-04
Volume
6
ISSN
2050-084X (ISSN-L)
OpenAlex
W2611412176
Cited by
119
References
80
Citations by year
2026: 5 · 2025: 11 · 2024: 34 · 2023: 20 · 2022: 5 · 2021: 11 · 2020: 8 · 2019: 7 · 2018: 14 · 2017: 4
FWCI
4.41
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Open Research Exeter (University of Exeter) (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Max Planck Digital Library (submittedVersion)
  • Figshare (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
  • Max-Planck-Gesellschaft
  • Deutsche Forschungsgemeinschaft (JE 777/1-1)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
peptidergic signaling, synaptic connectivity, connectome, neuropeptides, neuropeptide receptors, hypothalamic neuropeptides, Platynereis dumerilii, larval brain, single-cell transcriptome, neurosecretory cells
MeSH terms
Animals, Brain, Neuropeptides, Neurosecretory Systems, Polychaeta, Gene Expression Profiling, Microscopy, Electron, Transmission, Connectome

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