Cited by 8Genetics and Neurodevelopmental DisordersAutism Spectrum Disorder ResearchMemory and Neural Mechanisms

Perirhinal cortex abnormalities impair hippocampal plasticity and learning in Scn2a , Fmr1 , and Cdkl5 autism mouse models

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Keith, Rachel E., Shen, Yiming, Janzen-Meza, Jordan A., Abramovitz, Joseph, Antonello, Priscila C., Hameed, Aysha, Mohana Krishnan, Baskar, Antoine, Michelle W.·2025·Science Advances

Abstract

Learning and memory deficits, including spatial navigation difficulties, are common in autism spectrum disorder (ASD). Several ASD mouse models ( Scn2a +/− , Fmr1 −/− , Cdkl5 −/− ) exhibit impaired spatial learning, with these deficits often attributed to hippocampal dysfunction. However, we identify the perirhinal cortex (PRC) as a critical driver of these deficits. Cortical-wide Scn2a reduction in excitatory neurons replicated the spatial learning and long-term potentiation (LTP) impairments—a cellular correlate of learning—seen in Scn2a +/− mice, while hippocampal-wide reduction did not. PRC-specific viral-mediated Scn2a reduction in excitatory neurons decreased release probability, which consequently disrupted synaptic transmission and LTP in the hippocampus, as well as spatial learning. As PRC activity was reduced, chemogenetic activation of the PRC reversed these deficits in Scn2a +/− mice and rescued spatial learning and LTP impairments in Fmr1 and Cdkl5 knockout mice. Thus, in several genetic models of ASD, PRC abnormalities may disrupt hippocampal function to impair learning and memory.

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  • Recent studies of ASD mouse models point to a shared disturbance at the level of hippocampal circuits, which may provide a mechanistic convergence for diverse genetic risks.

    “Recent studies of ASD mouse models point to a shared disturbance at the level of hippocampal circuits, which may provide a mechanistic convergence for diverse genetic risks (Keith et al., 2025).”

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Cited by

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Authors
Keith, R. E., Shen, Y., Janzen-Meza, J. A., Abramovitz, J., Antonello, P. C., Hameed, A., Mohana Krishnan, B., & Antoine, M. W.
Affiliations
  • National Institutes of Health (US)
  • Washington University in St. Louis (US)
  • George Mason University (US)
  • Section on Neural Circuits, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA.
Corresponding author
  • Keith, Rachel E.
  • Shen, Yiming
  • Antoine, Michelle W.
Venue
Science Advances
Published
2025-03-07
Volume
11
Issue
10
Pages
eadt0780-eadt0780
ISSN
2375-2548 (ISSN-L)
OpenAlex
W4408235679
Cited by
8
References
8
Citations by year
2026: 5 · 2025: 3
FWCI
4.70
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Science Advances (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Institute of Neurological Disorders and Stroke (T32NS121881)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
autism spectrum disorder, perirhinal cortex, hippocampal plasticity, spatial learning, long-term potentiation, SCN2A, FMR1 gene, CDKL5, excitatory neurons, synaptic transmission, release probability, chemogenetic activation, viral gene silencing, mouse models of autism, memory impairment
MeSH terms
Autism Spectrum Disorder, Perirhinal Cortex, Animals, Autistic Disorder, Disease Models, Animal, Hippocampus, Learning, Male, Neuronal Plasticity, Protein Serine-Threonine Kinases, Long-Term Potentiation, Mice, Knockout, Mice, Fragile X Mental Retardation Protein, Fragile X Messenger Ribonucleoprotein 1, NAV1.2 Voltage-Gated Sodium Channel, Spatial Learning

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