Cited by 178Genetics and Neurodevelopmental DisordersAutism Spectrum Disorder ResearchWilliams Syndrome Research

Genetic-background modulation of core and variable autistic-like symptoms in Fmr1 knock-out mice

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Pietropaolo, Susanna, Guilleminot, Aurélie, Martin, Benoît, D'Amato, Francesca R., Crusio, Wim E.·2011·PLoS ONE

Abstract

BACKGROUND: No animal models of autism spectrum disorders (ASD) with good construct validity are currently available; using genetic models of pathologies characterized by ASD-like deficits, but with known causes, may be therefore a promising strategy. The Fmr1-KO mouse is an example of this approach, modeling Fragile X syndrome, a well-known genetic disorder presenting ASD symptoms. The Fmr1-KO is available on different genetic backgrounds (FVB versus C57BL/6), which may explain some of the conflicting results that have been obtained with these mutants up till now. METHODS: Fmr1 KO and their wild-type littermates on both the FVB and C57BL/6 genetic backgrounds were examined on a battery of tests modeling the clinical symptoms of ASD, including the triad of core symptoms (alterations in social interaction and communication, presence of repetitive behaviors), as well as the secondary symptoms (disturbances in sensori-motor reactivity and in circadian patterns of activity, epileptic events). RESULTS: Fmr1-KO mice displayed autistic-like core symptoms of altered social interaction and occurrence of repetitive behaviors with additional hyperactivity. The genetic background modulated the effects of the Fmr1 deletion and it appears that the C57BL/6 background may be more suitable for further research on core autistic-like symptoms. CONCLUSIONS: The Fmr1-mouse line does not recapitulate all of the main core and secondary ASD symptoms, but still can be useful to elucidate the neurobiological mechanisms underlying specific ASD-like endophenotypes.

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Crossref · 10.1371/journal.pone.0017073

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  • Fmr1 KO mice, compared to wild-type, have lower than normal levels of initial social interactions, fail to show a preference for social novelty, and display inappropriate social responses.

    “Fmr1 KO, in comparison to the wild-type (WT) strain, are described as having lower than normal levels of initial social interactions (Mineur et al., 2006), fail to show a preference for social novelty, and display inappropriate social responses (Pietropaolo et al., 2011).”

    From Oxytocin and vasopressin systems in genetic syndromes and neurodevelopmental disorders (2014) · cites this paper as Pietropaolo et al., 2011

  • In research by Pietropaolo et al. (2011), the Fmr1 KO on the B6 background was found to be a good model for Fragile X syndrome and a suitable model for ASD.

    “They found the Fmr1 KO on the B6 background to be a good model for FXS and a suitable model for ASD (Pietropaolo et al., 2011; Yan et al., 2004).”

    From Oxytocin and vasopressin systems in genetic syndromes and neurodevelopmental disorders (2014) · cites this paper as Pietropaolo et al., 2011

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  1. [67]Yee BK Chang T Pietropaolo S Feldon J 2005 The expression of prepulse inhibition of the acoustic startle reflex as a function of three pulse stimulus intensities, three prepulse stimulus intensities, and three levels of startle responsiveness in C57BL6/J mice. Behav Brain Res 163 265 276 16039728

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Authors
Pietropaolo, S., Guilleminot, A., Martin, B., D'Amato, F. R., & Crusio, W. E.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Inserm (FR)
  • National Research Council (IT)
Corresponding author
Crusio, Wim E.
Venue
PLoS ONE
Published
2011-02-22
Volume
6
Issue
2
Pages
e17073
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2002465714
Cited by
178
References
82
Citations by year
2026: 7 · 2025: 7 · 2024: 15 · 2023: 11 · 2022: 13 · 2021: 12 · 2020: 10 · 2019: 12 · 2018: 10 · 2017: 10 · 2016: 15 · 2015: 15 · 2014: 15 · 2013: 9 · 2012: 11
FWCI
8.18
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • March of Dimes Foundation (12-FY05-1198)
  • Institut National de la Santé et de la Recherche Médicale
  • Centre National de la Recherche Scientifique (12-FY05-1198)
  • Université de Bordeaux (12-FY05-1198)
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 › Developmental Neuroscience › Williams Syndrome Research
Keywords
autism spectrum disorder, Fmr1 knockout mice, fragile X syndrome, genetic background, FVB mice, C57BL/6 mice, social interaction deficits, repetitive behavior, hyperactivity, circadian activity, animal models of autism, endophenotypes
MeSH terms
Animals, Autistic Disorder, Behavior, Animal, Disease Models, Animal, Learning, Male, Mice, Inbred C57BL, Motor Activity, Phenotype, Mice, Knockout, Genetic Heterogeneity, Genetic Predisposition to Disease, Mice, Fragile X Messenger Ribonucleoprotein 1, Endophenotypes

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