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@ARTICLE{Trossbach:280994,
author = {Trossbach, S. V. and Bader, V. and Hecher, L. and Pum, M.
E. and Masoud, S. T. and Prikulis, I. and Schäble, S. and
de Souza Silva, M. A. and Su, P. and Boulat, B. and
Chwiesko, C. and Poschmann, G. and Stühler, K. and Lohr, K.
M. and Stout, K. A. and Oskamp, A. and Godsave, S. F. and
Müller-Schiffmann, A. and Bilzer, T. and Steiner, H. and
Peters, P. J. and Bauer, Andreas and Sauvage, M. and Ramsey,
A. J. and Miller, G. W. and Liu, F. and Seeman, P. and
Brandon, N. J. and Huston, J. P. and Korth, C.},
title = {{M}isassembly of full-length {D}isrupted-in-{S}chizophrenia
1 protein is linked to altered dopamine homeostasis and
behavioral deficits},
journal = {Molecular psychiatry},
volume = {21},
issn = {1476-5578},
address = {London},
publisher = {Macmillan},
reportid = {FZJ-2016-00705},
pages = {1561–1572},
year = {2016},
abstract = {Disrupted-in-schizophrenia 1 (DISC1) is a mental illness
gene first identified in a Scottish pedigree. So far,
DISC1-dependent phenotypes in animal models have been
confined to expressing mutant DISC1. Here we investigated
how pathology of full-length DISC1 protein could be a major
mechanism in sporadic mental illness. We demonstrate that a
novel transgenic rat model, modestly overexpressing the
full-length DISC1 transgene, showed phenotypes consistent
with a significant role of DISC1 misassembly in mental
illness. The tgDISC1 rat displayed mainly perinuclear DISC1
aggregates in neurons. Furthermore, the tgDISC1 rat showed a
robust signature of behavioral phenotypes that includes
amphetamine supersensitivity, hyperexploratory behavior and
rotarod deficits, all pointing to changes in dopamine (DA)
neurotransmission. To understand the etiology of the
behavioral deficits, we undertook a series of molecular
studies in the dorsal striatum of tgDISC1 rats. We observed
an $80\%$ increase in high-affinity DA D2 receptors, an
increased translocation of the dopamine transporter to the
plasma membrane and a corresponding increase in DA inflow as
observed by cyclic voltammetry. A reciprocal relationship
between DISC1 protein assembly and DA homeostasis was
corroborated by in vitro studies. Elevated cytosolic
dopamine caused an increase in DISC1 multimerization,
insolubility and complexing with the dopamine transporter,
suggesting a physiological mechanism linking DISC1 assembly
and dopamine homeostasis. DISC1 protein pathology and its
interaction with dopamine homeostasis is a novel cellular
mechanism that is relevant for behavioral control and may
have a role in mental illness.},
cin = {INM-2},
ddc = {610},
cid = {I:(DE-Juel1)INM-2-20090406},
pnm = {571 - Connectivity and Activity (POF3-571)},
pid = {G:(DE-HGF)POF3-571},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000388719600011},
pubmed = {pmid:26754951},
doi = {10.1038/mp.2015.194},
url = {https://juser.fz-juelich.de/record/280994},
}