Disc1 regulates granule cell migration in the developing hippocampus.

Abstract:

:Schizophrenia is a severely debilitating psychiatric disease that is hypothesized to have its roots in neurodevelopment. Although the precise neuropathology underlying schizophrenia has remained elusive, there are consistent reports of abnormalities in several brain areas. Chief among these is the hippocampus, an area which has displayed both structural and functional abnormalities in many schizophrenic patients. In order to better understand how disruption of hippocampal development may contribute to the etiology of psychiatric disease, we investigated the function of a highly promising schizophrenia susceptibility gene, DISC1 (Disrupted-In-Schizophrenia 1), in the development of the hippocampus. DISC1 is strongly expressed in the hippocampus from its early development through adulthood and has been implicated in hippocampal structure and function in human studies. However, its precise role in the development of the hippocampus is not yet known. Here, we show that in utero electroporation of Disc1 shRNA into the developing mouse hippocampus hinders the migration of dentate gyrus granule cells. Intriguingly, Disc1 knockdown does not affect the migration of CA1 pyramidal neurons, suggesting that Disc1's role in regulating neuronal migration is spatially restricted within the hippocampus. These findings support the idea that DISC1 abnormalities that contribute to the onset of schizophrenia may do so through their influences on hippocampal development.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Meyer KD,Morris JA

doi

10.1093/hmg/ddp266

subject

Has Abstract

pub_date

2009-09-01 00:00:00

pages

3286-97

issue

17

eissn

0964-6906

issn

1460-2083

pii

ddp266

journal_volume

18

pub_type

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