Cited by 67Neuroscience and Neuropharmacology ResearchGenetics and Neurodevelopmental DisordersGenomics and Rare Diseases

Synapse diversity and synaptome architecture in human genetic disorders

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Grant, Seth G N·2019·Human Molecular Genetics

Abstract

Over 130 brain diseases are caused by mutations that disrupt genes encoding the proteome of excitatory synapses. These include neurological and psychiatric disorders with early and late onset such as autism, schizophrenia and depression and many other rarer conditions. The proteome of synapses is highly complex with over 1000 conserved proteins which are differentially expressed generating a vast, potentially unlimited, number of synapse types. The diversity of synapses and their location in the brain are described by the synaptome. A recent study has mapped the synaptome across the mouse brain, revealing that synapse diversity is distributed into an anatomical architecture observed at scales from individual dendrites to the whole systems level. The synaptome architecture is built from the hierarchical expression and assembly of proteins into complexes and supercomplexes which are distributed into different synapses. Mutations in synapse proteins change the synaptome architecture leading to behavioral phenotypes. Mutations in the mechanisms regulating the hierarchical assembly of the synaptome, including transcription and proteostasis, may also change synapse diversity and synaptome architecture. The logic of synaptome hierarchical assembly provides a mechanistic framework that explains how diverse genetic disorders can converge on synapses in different brain circuits to produce behavioral phenotypes.

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  • The identification of large multiprotein complexes associated with NMDA receptors and MAGUK proteins expanded the known synaptic proteome by tenfold.

    “The identification of large multiprotein complexes, such as those associated with N-methyl-D-aspartate (NMDA) receptors and membrane-associated guanylate kinase (MAGUK) proteins, expanded the known synaptic proteome by tenfold, opening new avenues for research into synaptic organization and disease [10].”

    From Molecular Physiology of the Neuronal Synapse (2026) · cites this paper as [10]

  • Disruptions in the hierarchical assembly of proteins within the "synaptome architecture" can lead to widespread behavioral phenotypes.

    “Disruptions in the hierarchical assembly of proteins within the “synaptome architecture” can lead to widespread behavioral phenotypes, highlighting the PSD as a critical target for understanding and treating complex neurological and psychiatric conditions [10].”

    From Molecular Physiology of the Neuronal Synapse (2026) · cites this paper as [10]

  • The synaptome is built from the hierarchical expression and assembly of proteins into complexes and supercomplexes.

    “The “synaptome,” which describes the diversity of synapses and their anatomical distribution, is built from the hierarchical expression and assembly of proteins into complexes and supercomplexes [4,10].”

    From Molecular Physiology of the Neuronal Synapse (2026) · cites this paper as [10]

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Authors
Grant, S. G. N.
Affiliations
University of Edinburgh (GB)
Corresponding author
Grant, Seth G N
Venue
Human Molecular Genetics
Published
2019-07-26
Volume
28
Issue
R2
Pages
R219-R225
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2965893335
Cited by
67
References
39
Citations by year
2026: 5 · 2025: 9 · 2024: 11 · 2023: 10 · 2022: 12 · 2021: 13 · 2020: 7
FWCI
1.06
Type
journal article
Language
en
Open access
Locations
  • Human Molecular Genetics (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
Funders
  • Wellcome (202932)
  • European Research Council Advanced Grant SYNNOVATE (695568)
  • Simons Initiative for the Developing Brain
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
Keywords
excitatory synapses, synapse proteome, neurological disorders, mental illness, autism spectrum disorder, schizophrenia, depression, synapse assembly, proteostasis, transcription, behavioral phenotypes, mouse brain
MeSH terms
Disks Large Homolog 4 Protein, Aging, Animals, Autistic Disorder, Depression, Humans, Membrane Proteins, Schizophrenia, Synapses, Proteome, Mice, Guanylate Kinases

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