Publication: GLUT inhibitor WZB117 induces cytotoxicity with increased production of amyloid-beta peptide in SH-SY5Y cells preventable by beta-hydroxybutyrate: implications in Alzheimer�s disease
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Date
2023
Journal Title
Pharmacological Reports
Journal ISSN
Volume Title
Publisher
Springer Science and Business Media Deutschland GmbH
Abstract
Background: Inhibitors of glucose transporters are being explored as potential anti-cancer drugs. Decreased cerebral glucose utilization with reduced levels of several glucose transporters is also an important pathogenic signature of neurodegeneration of Alzheimer�s disease, but its exact role in the pathogenesis of this disease is not established. We explored in an experimental model if inhibitors of glucose transporters could lead to altered amyloid-beta homeostasis, mitochondrial dysfunction, and neuronal death, which are relevant in the pathogenesis of Alzheimer�s disease. Methods: SH-SY5Y cells (human neuroblastoma cell line) were exposed to an inhibitor (WZB117) of several types of glucose transporters. We examined the effects of glucose hypometabolism on SH-SY5Y cells in terms of mitochondrial functions, production of reactive oxygen species, amyloid-beta homeostasis, and neural cell death. The effect of ?-hydroxybutyrate in ameliorating the effects of WZB117 on SH-SY5Y cells was also examined. Results: We observed that exposure of SH-SY5Y cells to WZB117 caused mitochondrial dysfunction, increased production of reactive oxygen species, loss of cell viability, increased expression of BACE 1, and intracellular accumulation of amyloid ? peptide (A?42). All the effects of WZB117 could be markedly prevented by co-treatment with ?-hydroxybutyrate. Cyclosporine A, a blocker of mitochondrial permeability transition pore (mPTP) activation, could not prevent cell death caused by WZB117. Conclusion: Results in this neuroblastoma model have implications for the pathogenesis of Alzheimer�s disease and warrant further explorations of WZB117 in primary cultures of neurons and experimental animal models. � 2023, The Author(s) under exclusive licence to Maj Institute of Pharmacology Polish Academy of Sciences.
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Keywords
Amyloid beta peptide, Glucose transporter, Mitochondria, Neurodegeneration, Reactive oxygen species