Cited by 108Genetics and Neurodevelopmental DisordersNeuroscience and Neuropharmacology ResearchAutism Spectrum Disorder Research

The DOI matches its Crossref record; 89 of the 89 references it cites were found in a registry or an index.

Genetic manipulation of STEP reverses behavioral abnormalities in a fragile X syndrome mouse model

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Goebel‐Goody, S. M., Wilson‐Wallis, E. D., Royston, S., Tagliatela, S. M., Naegele, J. R., Lombroso, P. J.·2012·Genes, Brain and Behavior

Abstract

Fragile X syndrome (FXS), the most common inherited form of intellectual disability and prevailing known genetic basis of autism, is caused by an expansion in the Fmr1 gene that prevents transcription and translation of fragile X mental retardation protein (FMRP). FMRP binds to and controls translation of mRNAs downstream of metabotropic glutamate receptor (mGluR) activation. Recent work shows that FMRP interacts with the transcript encoding striatal‐enriched protein tyrosine phosphatase (STEP; Ptpn5). STEP opposes synaptic strengthening and promotes synaptic weakening by dephosphorylating its substrates, including ERK1/2, p38, Fyn and Pyk2, and subunits of N‐methyl‐d‐aspartate (NMDA) and AMPA receptors. Here, we show that basal levels of STEP are elevated and mGluR‐dependent STEP synthesis is absent in Fmr1KO mice. We hypothesized that the weakened synaptic strength and behavioral abnormalities reported in FXS may be linked to excess levels of STEP. To test this hypothesis, we reduced or eliminated STEP genetically in Fmr1KO mice and assessed mice in a battery of behavioral tests. In addition to attenuating audiogenic seizures and seizure‐induced c‐Fos activation in the periaqueductal gray, genetically reducing STEP in Fmr1KO mice reversed characteristic social abnormalities, including approach, investigation and anxiety. Loss of STEP also corrected select nonsocial anxiety‐related behaviors in Fmr1KO mice, such as light‐side exploration in the light/dark box. Our findings indicate that genetically reducing STEP significantly diminishes seizures and restores select social and nonsocial anxiety‐related behaviors in Fmr1KO mice, suggesting that strategies to inhibit STEP activity may be effective for treating patients with FXS.

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Crossref · 10.1111/j.1601-183x.2012.00781.x

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  • STEP is upregulated in fragile X syndrome, and genetic reduction of STEP diminished seizures and restored selected social and nonsocial anxiety-related behaviors in Fmr1 knockout mice.

    “Recently, the striatal enriched protein tyrosine phosphatase (STEP) has been shown to be upregulated in FXS, and genetic reduction of STEP diminished seizures and restored selected social and nonsocial anxiety-related behaviors in the Fmr1 KO mice (94).”
  • Because STEP acts on ERK1/2, NMDA, and AMPA, which are affected in fragile X syndrome, inhibiting STEP may be considered for treating patients with fragile X syndrome.

    “Because STEP acts on at least three molecules (ERK1/2, NMDA, and AMPA) affected in FXS, strategies to inhibit STEP activity may be considered for treating patients with FXS.”

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Metadata

Authors
Goebel‐Goody, S. M., Wilson‐Wallis, E. D., Royston, S., Tagliatela, S. M., Naegele, J. R., & Lombroso, P. J.
Affiliations
  • Yale University (US)
  • Wesleyan University (US)
Venue
Genes, Brain and Behavior
Publisher
Wiley
Published
2012-04-06
Volume
11
Issue
5
Pages
586-600
ISSN
  • 1601-183X (ISSN-L)
  • 1601-1848
OpenAlex
W2000309815
Cited by
108
References
89
Citations by year
2026: 4 · 2025: 1 · 2024: 4 · 2023: 6 · 2022: 1 · 2021: 5 · 2020: 4 · 2019: 8 · 2018: 8 · 2017: 11 · 2016: 12 · 2015: 13 · 2014: 11 · 2013: 16 · 2012: 4
FWCI
8.44
Type
journal article
Language
en
Open access
Locations
  • Genes Brain & Behavior (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (MH 52711, R01MH091037, MH091037, R01MH052711, T32MH018268)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
Keywords
fragile X syndrome, STEP, PTPN5, FMRP, Fmr1 knockout mice, metabotropic glutamate receptors, synaptic plasticity, audiogenic seizures, social behavior, anxiety-like behavior, intellectual disability, autism spectrum disorder, Fyn, Pyk2, ERK1/2, p38 MAPK, NMDA receptor, AMPA receptors, periaqueductal gray, c-fos
MeSH terms
Animals, Behavior, Animal, Choice Behavior, Disease Models, Animal, Hippocampus, Motor Activity, Neurons, Social Dominance, Synaptosomes, Proto-Oncogene Proteins c-fos, Receptors, Metabotropic Glutamate, Mice, Knockout, Mice, Fragile X Messenger Ribonucleoprotein 1, Protein Tyrosine Phosphatases, Non-Receptor

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