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Novel MPDZ/MUPP1 transgenic and knockdown models confirm Mpdz's role in ethanol withdrawal and support its role in voluntary ethanol consumption

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Original languageEnglish
Pages (from-to)143-147
Number of pages5
JournalAddiction Biology
Issue number1
Early online date10 Oct 2013
Publication statusPublished - Jan 2015


Association studies implicate multiple PDZ domain protein (MPDZ/MUPP1) sequence and/or expression in risk for alcoholism in humans and ethanol withdrawal (EW) in mice, but confirmation has been hindered by the dearth of targeted genetic models. We report the creation of transgenic (MPDZ-TG) and knockout heterozygote (Mpdz(+/-)) mice, with increased (2.9-fold) and decreased (53%) target expression, respectively. Both models differ in EW compared with wild-type littermates (P0.03), providing compelling evidence for an inverse relationship between Mpdz expression and EW severity. Additionally, ethanol consumption is reduced up to 18% (P=0.006) in Mpdz(+/-), providing the first evidence implicating Mpdz in ethanol self-administration.

    Research areas

  • Consumption, ethanol, MPDZ, MUPP1, withdrawal, RECEPTOR, GENE

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