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Tspyl2 Loss-of-Function Causes Neurodevelopmental Brain and Behavior Abnormalities in Mice

Research output: Contribution to journalArticle

Qi Li, Siu Yuen Chan, Kwun K. Wong, Ran Wei, Yu On Leung, Abby Y. Ding, Tomy C K Hui, Charlton Cheung, Siew E. Chua, Pak C. Sham, Ed X. Wu, Grainne M McAlonan

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalBehavior Genetics
Early online date29 Jan 2016
DOIs
Publication statusE-pub ahead of print - 29 Jan 2016

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Abstract

Testis specific protein, Y-encoded-like 2 (TSPYL2) regulates the expression of genes encoding glutamate receptors. Glutamate pathology is implicated in neurodevelopmental conditions such as autism spectrum disorder, attention deficit hyperactivity disorder (ADHD) and schizophrenia. In line with this, a microduplication incorporating the TSPYL2 locus has been reported in people with ADHD. However, the role of Tspyl2 remains unclear. Therefore here we used a Tspyl2 loss-of-function mouse model to directly examine how this gene impacts upon behavior and brain anatomy. We hypothesized that Tspyl2 knockout (KO) would precipitate a phenotype relevant to neurodevelopmental conditions. In line with this prediction, we found that Tspyl2 KO mice were marginally more active, had significantly impaired prepulse inhibition, and were significantly more ‘sensitive’ to the dopamine agonist amphetamine. In addition, the lateral ventricles were significantly smaller in KO mice. These findings suggest that disrupting Tspyl2 gene expression leads to behavioral and brain morphological alterations that mirror a number of neurodevelopmental psychiatric traits.

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