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• W3136341813 endingPage "1196" @default.
• W3136341813 startingPage "1189" @default.
• W3136341813 abstract "Sphingolipids and their metabolites are increasingly implicated in the pathogenesis of many metabolic and neurological diseases. It has been postulated that sphingolipids coalesce with cholesterol to form laterally segregated lipid domains that are involved in protein sorting and trafficking. In this work, we have explored the effect of metabolic depletion of sphingolipids on cell surface expression of the human serotonin1A receptor, a neurotransmitter G protein-coupled receptor. We used fumonisin B1 (FB1), a fungal mycotoxin, to inhibit sphingolipid biosynthesis in HEK-293 cells stably expressing the human serotonin1A receptor. Our results obtained using flow cytometric analysis and confocal microscopic imaging show that the cell surface population of the serotonin1A receptor is reduced under sphingolipid-depleted condition. Western blot analysis confirmed that there was no significant difference in total cellular level of the serotonin1A receptor upon depletion of sphingolipids. Interestingly, the effect of FB1 on serotonin1A receptor population was reversed upon replenishment with sphingolipids. These results indicate that sphingolipid depletion does not alter total cellular receptor levels, but impairs serotonin1A receptor trafficking to the cellular plasma membrane. These results could provide mechanistic insights into the role of sphingolipids in modulation of neurotransmitter receptor signaling and trafficking in health and disease." @default.
• W3136341813 created "2021-03-29" @default.
• W3136341813 creator A5063835467 @default.
• W3136341813 creator A5067157038 @default.
• W3136341813 creator A5083143380 @default.
• W3136341813 date "2021-03-24" @default.
• W3136341813 modified "2023-10-18" @default.
• W3136341813 title "Metabolic Depletion of Sphingolipids Reduces Cell Surface Population of the Human Serotonin_1A Receptor due to Impaired Trafficking" @default.
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• W3136341813 doi "https://doi.org/10.1021/acschemneuro.1c00017" @default.
• W3136341813 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33760584" @default.
• W3136341813 hasPublicationYear "2021" @default.
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