Roles of synaptic cell adhesion molecules in the neuromodulatory systems
Jennifer Li1, Yuka Imamura Kawasawa2, Motokazu Uchigashima3
1Department of Neurobiology, Brudnick Neuropsychiatric Research Institute, University of Massachusetts Medical School, 366 Plantation Street, Worcester, MA 01605, USA.
Molecules and Cells
|March 1, 2026
Summary
Synaptic cell-adhesion molecules (CAMs) are vital for synapse formation. This review explores their roles in dopaminergic and serotonergic systems, highlighting presynaptic CAM expression and function.
Area of Science:
- Neuroscience
- Molecular Biology
- Cell Biology
Background:
- Synaptic cell-adhesion molecules (CAMs) physically link pre- and postsynaptic structures, crucial for synapse development and maintenance.
- CAMs are well-established in glutamatergic and GABAergic synapses, but their function in modulatory systems is less understood.
- Dopaminergic (DA) and serotonergic (5-HT) circuits use both synaptic and volume transmission, complicating CAM role elucidation.
Purpose of the Study:
- To characterize presynaptic CAM expression in DA and 5-HT neurons using single-cell transcriptomic data.
- To review the known contributions of presynaptic CAMs to DA and 5-HT neuron function.
- To discuss how postsynaptic CAMs influence dopaminergic synaptic architecture.
Main Methods:
- Analysis of publicly available single-cell transcriptomic datasets for DA and 5-HT neurons.
- Literature review summarizing current knowledge on CAMs in modulatory systems.
- Synthesis of findings to discuss CAM roles in DA and 5-HT circuit function.
Main Results:
- Identified specific presynaptic CAMs expressed in DA and 5-HT neurons.
- Summarized evidence for presynaptic CAM involvement in DA and 5-HT signaling.
- Highlighted the influence of postsynaptic CAMs on dopaminergic synapse structure.
Conclusions:
- Presynaptic CAMs play a significant role in the development and function of DA and 5-HT systems.
- Understanding CAMs in these modulatory circuits is crucial for deciphering complex neural communication.
- Further research into CAMs will illuminate mechanisms underlying synaptic plasticity and function in these systems.
Keywords:
Autism spectrum disorderDopamineNeurodevelopmental disordersSerotoninTrans-synaptic adhesion moleculesMore Related Videos
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