RT Journal Article SR Electronic T1 Defensive and offensive behaviors in social interaction settings in a Kleefstra syndrome mouse model JF bioRxiv FD Cold Spring Harbor Laboratory SP 2022.02.03.478985 DO 10.1101/2022.02.03.478985 A1 Alonso, Alejandra A1 Samanta, Anumita A1 van der Meij, Jacqueline A1 van den Brand, Liz A1 Negwer, Moritz A1 Lobato, Irene Navarro A1 Genzel, Lisa YR 2022 UL http://biorxiv.org/content/early/2022/02/06/2022.02.03.478985.abstract AB Kleefstra syndrome in humans is characterized by general delay in development, intellectual disability and autistic features. The mouse model of this disease (Ehmt1+/-) expresses anxiety, autistic-like traits, and aberrant social interactions with non-cagemates. To investigate how Ehmt1+/- mice behave with unfamiliar conspecifics, we allowed adult, male animals to freely interact for 10 minutes in a neutral, novel environment within a host-visitor setting. In 17 out of 74 trials there were defensive and offensive behaviors. Our key finding was that Ehmt1+/- mice displayed defensive postures, attacking and biting; in contrast, wild-type (WT) interacting with other WT did not enact such behaviors. Further, if there was a fight between an Ehmt1+/- and a WT mouse, it was always the Ehmt1+/- who initiated these behaviors.Competing Interest StatementThe authors have declared no competing interest.