Cited by 37Neuroscience and Neuropharmacology ResearchGenetics and Neurodevelopmental DisordersNeurogenesis and neuroplasticity mechanisms

Gene expression-based modeling of human cortical synaptic density

Open access
Goyal, Manu S., Raichle, Marcus E.·2013·Proceedings of the National Academy of Sciences

Abstract

Postnatal cortical synaptic development is characterized by stages of exuberant growth, pruning, and stabilization during adulthood. How gene expression orchestrates these stages of synaptic development is poorly understood. Here we report that synaptic growth-related gene expression alone does not determine cortical synaptic density changes across the human lifespan, but instead, the dynamics of cortical synaptic density can be accurately simulated by a first-order kinetic model of synaptic growth and elimination that incorporates two separate gene expression patterns. Surprisingly, modeling of cortical synaptic density is optimized when genes related to oligodendrocytes are used to determine synaptic elimination rates. Expression of synaptic growth and oligodendrocyte genes varies regionally, resulting in different predictions of synaptic density among cortical regions that concur with previous regional data in humans. Our analysis suggests that modest rates of synaptic growth persist in adulthood, but that this is counterbalanced by increasing rates of synaptic elimination, resulting in stable synaptic number and ongoing synaptic turnover in the human adult cortex. Our approach provides a promising avenue for exploring how complex interactions among genes may contribute to neurobiological phenomena across the human lifespan.

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Crossref · 10.1073/pnas.1303453110

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  • Aerobic glycolysis supports synaptic and neurite formation, as well as turnover, which likely persists throughout the lifespan.

    “More specifically, we hypothesize that AG supports synaptic and neurite formation, as well as turnover, which likely persists throughout the lifespan”

    From Aerobic glycolysis in the human brain is associated with development and neotenous gene expression (2014) · cites this paper as Goyal and Raichle, 2013

    The Discussion speculates that aerobic glycolysis may coincide with high synaptic growth rates in early childhood, and the Abstract reports model-based evidence of ongoing synaptic turnover in the adult human cortex. The paper does not establish that aerobic glycolysis supports synaptic or neurite formation and turnover throughout the lifespan. (LLM, conf=0.86)

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Authors
Goyal, M. S., & Raichle, M. E.
Affiliations
Washington University in St. Louis (US)
Venue
Proceedings of the National Academy of Sciences
Published
2013-04
Volume
110
Issue
16
Pages
6571-6576
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2002701407
Cited by
37
References
34
Citations by year
2026: 2 · 2025: 2 · 2024: 3 · 2023: 2 · 2022: 1 · 2021: 4 · 2020: 3 · 2019: 3 · 2018: 2 · 2017: 3 · 2016: 2 · 2015: 4 · 2014: 5 · 2013: 1
FWCI
1.96
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
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 › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
synaptic development, synaptic pruning, synaptic growth, gene expression, kinetic modeling, synaptic turnover, regional variation, lifespan development
MeSH terms
Cerebral Cortex, Exons, Humans, Models, Neurological, Oligodendroglia, Synapses, Gene Expression Regulation, Developmental, Computational Biology, Gene Expression Profiling, Principal Component Analysis, Microarray Analysis

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