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Assessment of Social Interaction Behaviors
Published on: February 25, 2011
Complex, multimodal behavioral profile of the Homer1 knockout mouse.
P J Jaubert1, M S Golub, Y Y Lo
1Children's Center for Environmental Health & Department of Neurological Surgery, University of California Davis, CA 95616, USA.
Genes, Brain, and Behavior
|June 1, 2006
Summary
Homer1 gene knockout mice exhibit significant behavioral changes, including motor deficits and learning impairments. Heterozygous mice display increased aggression, highlighting Homer1
Area of Science:
- Neuroscience
- Behavioral Genetics
- Molecular Biology
Background:
- The Homer1 immediate early gene family is implicated in synaptogenesis and synaptic plasticity.
- Dysfunction of Homer1 is hypothesized to have broad behavioral consequences.
Purpose of the Study:
- To comprehensively assess the behavioral impact of Homer1 gene loss.
- To compare the behavior of Homer1 knockout (KO), heterozygous, and wild-type (WT) mice.
Main Methods:
- Utilized a battery of 10 distinct behavioral tests.
- Probed sensory, motor, social, emotional, and learning/memory functions.
- Examined male mice across KO, heterozygous, and WT genotypes.
Main Results:
- Homer1 KO mice displayed somatic growth retardation, poor motor coordination, heightened sensory reactivity, and learning deficits.
- Heterozygous mice exhibited increased aggression during social interactions.
- No alterations in mGluR5 and NMDA receptor distribution were observed in the hippocampus of KO mice.
Conclusions:
- Homer1 gene disruption leads to a wide spectrum of behavioral abnormalities.
- These findings contribute to understanding Homer1's role in brain development and behavior.
