Neuroanatomical and behavioral deficits in mice haploinsufficient for Pericentriolar material 1 (Pcm1).

Journal Article

The pericentriolar material (PCM) is composed of proteins responsible for microtubule nucleation/anchoring at the centrosome, some of which have been associated with genetic susceptibility to schizophrenia. Here, we show that mice haploinsufficient for Pericentriolar material 1 (Pcm1(+/-)), which encodes a component of the PCM found to bear rare loss of function mutations in patients with psychiatric illness, manifest neuroanatomical phenotypes and behavioral abnormalities. Using ex vivo magnetic resonance imaging of the Pcm1(+/-) brain, we detect reduced whole brain volume. Pcm1 mutant mice show impairment in social interaction, specifically in the social novelty phase, but not in the sociability phase of the three-chamber social interaction test. In contrast, Pcm1(+/-) mice show normal preference for a novel object, suggesting specific impairment in response to novel social stimulus. In addition, Pcm1(+/-) mice display significantly reduced rearing activity in the open field. Pcm1(+/-) mice behave normally in the elevated plus maze, rotarod, prepulse inhibition, and progressive ratio tests. Together, our results suggest that haploinsufficiency at the Pcm1 locus can induce a range of neuroanatomical and behavioral phenotypes that support the candidacy of this locus in neuropsychiatric disorders.

Full Text

Duke Authors

Cited Authors

  • Zoubovsky, S; Oh, EC; Cash-Padgett, T; Johnson, AW; Hou, Z; Mori, S; Gallagher, M; Katsanis, N; Sawa, A; Jaaro-Peled, H

Published Date

  • September 2015

Published In

Volume / Issue

  • 98 /

Start / End Page

  • 45 - 49

PubMed ID

  • 25697395

Electronic International Standard Serial Number (EISSN)

  • 1872-8111

International Standard Serial Number (ISSN)

  • 0168-0102

Digital Object Identifier (DOI)

  • 10.1016/j.neures.2015.02.002

Language

  • eng