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Early postnatal behavioral, cellular, and molecular changes in models of Huntington disease are reversible by HDAC inhibition.


ABSTRACT: Huntington disease (HD) is an autosomal dominant neurodegenerative disorder caused by expanded CAG repeats in the huntingtin gene (HTT). Although mutant HTT is expressed during embryonic development and throughout life, clinical HD usually manifests later in adulthood. A number of studies document neurodevelopmental changes associated with mutant HTT, but whether these are reversible under therapy remains unclear. Here, we identify very early behavioral, molecular, and cellular changes in preweaning transgenic HD rats and mice. Reduced ultrasonic vocalization, loss of prepulse inhibition, and increased risk taking are accompanied by disturbances of dopaminergic regulation in vivo, reduced neuronal differentiation capacity in subventricular zone stem/progenitor cells, and impaired neuronal and oligodendrocyte differentiation of mouse embryo-derived neural stem cells in vitro. Interventional treatment of this early phenotype with the histone deacetylase inhibitor (HDACi) LBH589 led to significant improvement in behavioral changes and markers of dopaminergic neurotransmission and complete reversal of aberrant neuronal differentiation in vitro and in vivo. Our data support the notion that neurodevelopmental changes contribute to the prodromal phase of HD and that early, presymptomatic intervention using HDACi may represent a promising novel treatment approach for HD.

SUBMITTER: Siebzehnrubl FA 

PROVIDER: S-EPMC6140493 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Early postnatal behavioral, cellular, and molecular changes in models of Huntington disease are reversible by HDAC inhibition.

Siebzehnrübl Florian A FA   Raber Kerstin A KA   Urbach Yvonne K YK   Schulze-Krebs Anja A   Canneva Fabio F   Moceri Sandra S   Habermeyer Johanna J   Achoui Dalila D   Gupta Bhavana B   Steindler Dennis A DA   Stephan Michael M   Nguyen Huu Phuc HP   Bonin Michael M   Riess Olaf O   Bauer Andreas A   Aigner Ludwig L   Couillard-Despres Sebastien S   Paucar Martin Arce MA   Svenningsson Per P   Osmand Alexander A   Andreew Alexander A   Zabel Claus C   Weiss Andreas A   Kuhn Rainer R   Moussaoui Saliha S   Blockx Ines I   Van der Linden Annemie A   Cheong Rachel Y RY   Roybon Laurent L   Petersén Åsa Å   von Hörsten Stephan S  

Proceedings of the National Academy of Sciences of the United States of America 20180827 37


Huntington disease (HD) is an autosomal dominant neurodegenerative disorder caused by expanded CAG repeats in the <i>huntingtin</i> gene (<i>HTT</i>). Although mutant HTT is expressed during embryonic development and throughout life, clinical HD usually manifests later in adulthood. A number of studies document neurodevelopmental changes associated with mutant <i>HTT</i>, but whether these are reversible under therapy remains unclear. Here, we identify very early behavioral, molecular, and cellu  ...[more]

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