简介：1-methyl-4-phenylpyridiniumion(MPP+)inducesendoplasmicreticulumstressandactivatescaspase-12inPC12cells,leadingtoneuronalapoptosis.However,theunderlyingmolecularmechanismremainsunknown.Thepresentstudyinvestigatedtheregulatoryeffectsofnervegrowthfactor(Aktactivator)andlithiumchloride(glycogensynthasekinase-3βinhibitor)ontheendoplasmicreticulumstresssignalingpathway.TheresultsrevealedthatMPP+inducedexpressionofBipandC/EBPhomologousprotein.TheupregulationofBipandC/EBPhomologousprotein,aswellasthedecreasedpro-caspase-12levelinducedbyMPP+wereinhibitedbypretreatmentofthenervegrowthfactororlithiumchloride.Theseresultssuggestthatthephosphatidylinositol3kinase-Akt-glycogensynthasekinase-3βpathwayisinvolvedinMPP+-inducedendoplasmicreticulumstress.
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