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Related Experiment Video

Updated: May 15, 2026

Strategies for Assessing Autistic-Like Behaviors in Mice

Strategies for Assessing Autistic-Like Behaviors in Mice

Published on: September 20, 2024

Monogenic mouse models of social dysfunction: implications for autism.

D Oddi¹, W E Crusio, F R D'Amato

¹CNR, Cell Biology and Neurobiology Institute, Rome, Italy; IRCCS, Santa Lucia Foundation, Rome, Italy.

Behavioural Brain Research

|January 19, 2013

Summary

Monogenic mouse models offer insights into autism spectrum disorder (ASD) by examining specific genes. This review evaluates the utility of mu-opioid receptor knock-out (KO) and Fmr1-KO mice for understanding ASD-related social dysfunction.

Keywords:

Fmr1 Fragile X syndrome Mouse models Mu receptor Opioid system Social behaviors Ultrasonic communication

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Area of Science:

Neuroscience
Genetics
Animal Models

Background:

Autism spectrum disorder (ASD) is a complex neurodevelopmental condition primarily marked by social deficits.
Its etiology is highly genetic, involving numerous genes with incompletely understood contributions.
A reductionist approach using monogenic animal models is proposed to study ASD's genetic underpinnings.

Purpose of the Study:

To review and evaluate monogenic mouse models for studying autism spectrum disorder.
To compare two strategies: targeting a candidate gene (mu-opioid receptor KO) and modeling a single-gene disorder (Fmr1-KO for Fragile X syndrome).
To assess the advantages and limitations of these models, considering factors like sex differences and age.

Main Methods:

Review of existing literature on mu-opioid receptor knock-out (KO) and Fmr1-KO mouse models.
Presentation of previous and novel experimental evidence on autistic-relevant behavioral phenotypes.
Analysis of factors influencing model validity, including sex and age.

Main Results:

Mu-opioid receptor KO mice and Fmr1-KO mice exhibit distinct autistic-relevant behavioral phenotypes.
Novel experimental data supplement existing findings on these models.
Sex and age significantly impact the behavioral outcomes and validity of these mouse models.

Conclusions:

Monogenic mouse models, such as mu-opioid receptor KO and Fmr1-KO, provide valuable tools for dissecting the genetic basis of social dysfunction in autism.
These models have limitations, and their validity is influenced by experimental conditions like sex and age.
Further research is needed to refine and validate these models for comprehensive autism research.