Assessing the developmental trajectory of mouse models of neurodevelopmental disorders: Social and communication deficits in mice with Neurexin 1α deletion

Emily Constance Armstrong, Angela Angela Caruso, Michela Servadio, Laura Christiana Andreae, Viviana Trezza, Maria Luisa Scattoni, Catherine Fernandes

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)
286 Downloads (Pure)

Abstract

Neurexin 1α mutations are strongly associated with neurodevelopmental disorders such as autism spectrum disorders and schizophrenia in humans. Studies using the Neurexin 1α knock-out mouse have showed behavioral abnormalities of relevance to these disorders and baseline deficits in excitatory synaptic function have been described. However, little is known about the effect of Neurexin 1α deletion on behavior during development. This study examined the effects of Neurexin 1α deletion on behavior across a range of developmental time points to determine whether potential abnormalities follow a developmental trajectory. Pups lacking Neurexin 1α emitted a reduced number of ultrasonic vocalizations early in development combined with a restricted repertoire of calls indicative of a loss in complexity in vocal production and showed delays in reaching certain developmental milestones. Behavioral testing showed that juvenile and adult male Neurexin 1α knock-out mice exhibited social deficits and increased levels of aggression, confirming previous findings. No increases in repetitive behaviors or deficits in motor learning or olfaction were seen.In conclusion, this research showed that Neurexin 1α deletion does result in social and communication deficits that follow a developmental trajectory. These are the first experimental data that associate a deletion of Neurexin 1α with alterations in behaviors relevant to autism spectrum disorder across development and highlight the importance of assessing the developmental trajectory in mouse models of neurodevelopmental disorders.
Original languageEnglish
Article numbere12630
Pages (from-to)1-22
Number of pages22
JournalGenes, brain, and behavior
Volume19
Issue number4
Early online date11 Dec 2019
DOIs
Publication statusPublished - Apr 2020

Keywords

  • autism
  • communication
  • genetics
  • models
  • mouse
  • neurexin
  • neurodevelopment
  • schizophrenia
  • social behavior
  • vocalization

Fingerprint

Dive into the research topics of 'Assessing the developmental trajectory of mouse models of neurodevelopmental disorders: Social and communication deficits in mice with Neurexin 1α deletion'. Together they form a unique fingerprint.

Cite this