ArticleACS chemical neuroscience2018
Newly Identified Aplysia SPTR-Gene Family-Derived Peptides: Localization and Function.
Article in ACS chemical neuroscience, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 17 citations in OpenAlex.
- Mechanisms that create a sequence of feeding-related behaviors in the molluskJournal of neurophysiology · 2026Article
- A brain-gut excitatory peptide/CCHamide homolog regulates satiation and motivational state transitions in the Aplysia feeding circuit.The Journal of biological chemistry · 2026Article
- Identification of a G Protein-Coupled Receptor for Buccalin-Type Peptides in the MolluskACS omega · 2025Article
- Synaptic and intrinsic plasticity mediated by CCK-type signaling coordinates behavioral changes during motivational state shifts.Cell reports · 2025Article
- Peptidomics.Nature reviews. Methods primers · 2023Article
- Characterization of anFrontiers in pharmacology · 2023Article
- Neural circuit regulation by identified modulatory projection neurons.Frontiers in neuroscience · 2023Review
- Profiling 26,000 Aplysia californica neurons by single cell mass spectrometry reveals neuronal populations with distinct neuropeptide profiles.The Journal of biological chemistry · 2022Article
- Mass Spectrometry Approaches Empowering Neuropeptide Discovery and Therapeutics.Pharmacological reviews · 2022Review
- Identification of an allatostatin C signaling system in mollusc Aplysia.Scientific reports · 2022Article
- The Complement of Projection Neurons Activated Determines the Type of Feeding Motor Program inFrontiers in neural circuits · 2021Article
- cAMP, CaACS chemical neuroscience · 2018Review
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Authors and funding
15 authors at 3 institutions in 2 countries.
Funding
Abstract
When individual neurons in a circuit contain multiple neuropeptides, these peptides can target different sets of follower neurons. This endows the circuit with a certain degree of flexibility. Here we identified a novel family of peptides, the Aplysia SPTR-Gene Family-Derived peptides (apSPTR-GF-DPs). We demonstrated apSPTR-GF-DPs, particularly apSPTR-GF-DP2, are expressed in the Aplysia CNS using immunohistochemistry and MALDI-TOF MS. Furthermore, apSPTR-GF-DP2 is present in single projection neurons, e.g., in the cerebral-buccal interneuron-12 (CBI-12). Previous studies have demonstrated that CBI-12 contains two other peptides, FCAP/CP2. In addition, CBI-12 and CP2 promote shortening of the protraction phase of motor programs. Here, we demonstrate that FCAP shortens protraction. Moreover, we show that apSPTR-GF-DP2 also shortens protraction. Surprisingly, apSPTR-GF-DP2 does not increase the excitability of retraction interneuron B64. B64 terminates protraction and is modulated by FCAP/CP2 and CBI-12. Instead, we show that apSPTR-GF-DP2 and CBI-12 increase B20 excitability and B20 activity can shorten protraction. Taken together, these data indicate that different CBI-12 peptides target different sets of pattern-generating interneurons to exert similar modulatory actions. These findings provide the first definitive evidence for SPTR-GF's role in modulation of feeding, and a form of molecular degeneracy by multiple peptide cotransmitters in single identified neurons.
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Registered trials
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