Abstract
A genetic overlap exists between autism spectrum disorders (ASD), currently thought to represent a continuum of the same disorder with varying degrees of severity, and other neurodevelopmental and neuropsychiatric endophenotypes. We show that the duplication of a single gene coding for a high-affinity kainate receptor subunit (i.e., grik4) in a limited area of the brain recapitulates behavioral endophenotypes seen in humans diagnosed with autism (anhedonia, depression, anxiety, and altered social interaction), including some humans with GRIK4 duplications. Therefore, it should be possible to use mice overexpressing grik4 to directly address circuit dysfunctions associated with ASDs and test specific treatments of autism-related behaviors.
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