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DJ-1 deficiency impairs glutamate uptake into astrocytes via the regulation of flotillin-1 and caveolin-1 expression

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dc.contributor.authorKim, JM-
dc.contributor.authorCha, SH-
dc.contributor.authorChoi, YR-
dc.contributor.authorJou, I-
dc.contributor.authorJoe, EH-
dc.contributor.authorPark, SM-
dc.description.abstractParkinson's disease (PD) is a common chronic and progressive neurodegenerative disorder. Although the cause of PD is still poorly understood, mutations in many genes including SNCA, parkin, PINK1, LRRK2, and DJ-1 have been identified in the familial forms of PD. It was recently proposed that alterations in lipid rafts may cause the neurodegeneration shown in PD. Here, we observe that DJ-1 deficiency decreased the expression of flotillin-1 (flot-1) and caveolin-1 (cav-1), the main protein components of lipid rafts, in primary astrocytes and MEF cells. As a mechanism, DJ-1 regulated flot-1 stability by direct interaction, however, decreased cav-1 expression may not be a direct effect of DJ-1, but rather as a result of decreased flot-1 expression. Dysregulation of flot-1 and cav-1 by DJ-1 deficiency caused an alteration in the cellular cholesterol level, membrane fluidity, and alteration in lipid rafts-dependent endocytosis. Moreover, DJ-1 deficiency impaired glutamate uptake into astrocytes, a major function of astrocytes in the maintenance of CNS homeostasis, by altering EAAT2 expression. This study will be helpful to understand the role of DJ-1 in the pathogenesis of PD, and the modulation of lipid rafts through the regulation of flot-1 or cav-1 may be a novel therapeutic target for PD.-
dc.titleDJ-1 deficiency impairs glutamate uptake into astrocytes via the regulation of flotillin-1 and caveolin-1 expression-
dc.contributor.affiliatedAuthor차, 선희-
dc.contributor.affiliatedAuthor주, 일로-
dc.contributor.affiliatedAuthor조, 은혜-
dc.contributor.affiliatedAuthor박, 상면-
dc.type.localJournal Papers-
dc.citation.titleScientific reports-
dc.identifier.bibliographicCitationScientific reports, 6. : 28823-28823, 2016-
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Journal Papers > School of Medicine / Graduate School of Medicine > Pharmacology
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