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The gene expression of the neuronal protein, SLC38A9, changes in mouse brain after in vivo starvation and high-fat diet
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Biosciences. (Molekylär neurofarmakologi)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Biosciences. (Molekylär neurofarmakologi)ORCID iD: 0000-0002-9681-5129
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Biosciences. (Molekylär neurofarmakologi)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Biosciences. (Molekylär neurofarmakologi)
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2017 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 12, no 2, article id e0172917Article in journal (Refereed) Published
Abstract [en]

SLC38A9 is characterized as a lysosomal component of the amino acid sensing RagulatorRAG GTPase complex, controlling the mechanistic target of rapamycin complex 1 (mTORC1). Here, immunohistochemistry was used to map SLC38A9 in mouse brain and staining was detected throughout the brain, in cortex, hypothalamus, thalamus, hippocampus, brainstem and cerebellum. More specifically, immunostaining was found in areas known to be involved in amino acid sensing and signaling pathways e.g. piriform cortex and hypothalamus. SLC38A9 immunoreactivity co-localized with both GABAergic and glutamatergic neurons, but not with astrocytes. SLC38A9 play a key role in the mTORC1 pathway, and therefore we performed in vivo starvation and high-fat diet studies, to measure gene expression alterations in specific brain tissues and in larger brain regions. Following starvation, Slc38a9 was upregulated in brainstem and cortex, and in anterior parts of the brain (Bregma 3.2 to -2.1mm). After high-fat diet, Slc38a9 was specifically upregulated in hypothalamus, while overall downregulation was noticed throughout the brain (Bregma 3.2 to -8.6mm).

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2017. Vol. 12, no 2, article id e0172917
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Medical and Health Sciences
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URN: urn:nbn:se:uu:diva-318954DOI: 10.1371/journal.pone.0172917ISI: 000394688200168OAI: oai:DiVA.org:uu-318954DiVA, id: diva2:1085802
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Swedish Research CouncilThe Swedish Brain FoundationNovo NordiskMagnus Bergvall FoundationAvailable from: 2017-03-30 Created: 2017-03-30 Last updated: 2017-11-29Bibliographically approved

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Hellsten, Sofie V.Eriksson, MikaelaLekholm, EmiliaPerland, EmelieFredriksson, Rorbert
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