Perirhinal cortex abnormalities impair hippocampal plasticity and learning in Scn2a , Fmr1 , and Cdkl5 autism mouse models
Open accessAbstract
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).”
From Biological hierarchy from genotype to phenotype in syndromic and non-syndromic autism spectrum disorder (2026) · cites this paper as Keith et al., 2025
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“…LOF Scn2a mutations to reduce neural circuit activity, we used whole-brain light-sheet imaging to examine expression of cFos, a marker of neuronal activity ( 34 ), to identify brain regions with significant activity changes contributing to the spatial learning impairment in Scn2a + / − mice (Fig.”
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Qing, Z., Yin, Z., Chen, B., Rao, Z., Yin, D., Li, D., Lu, Y., Shi, M., Li, S., Xu, Y., et al. (2026) · Frontiers in Neuroscience · doi:10.3389/fnins.2026.1964684
“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).”
- 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.
- ORCID
- Venue
- Science Advances
- Published
- 2025-03-07
- Volume
- 11
- Issue
- 10
- Pages
- eadt0780-eadt0780
- ISSN
- 2375-2548 (ISSN-L)
- PMC
- PMC11887805
- OpenAlex
- W4408235679
- Cited by
- 8
- References
- 8
- Citations by year
- 2026: 5 · 2025: 3
- FWCI
- 4.70
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- 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
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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