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The Atypical Antipsychotic Agent, Clozapine, Protects Against Corticosterone-Induced Death of PC12 Cells by Regulating the Akt/FoxO3a Signaling Pathway
Zeng, Zhiwen1,2; Wang, Xue1,2; Bhardwaj, Sanjeev K.3; Zhou, Xuanhe1,2; Little, Peter J.4; Quirion, Remi3; Srivastava, Lalit K.3; Zheng, Wenhua1,2
2017-07
Source PublicationMOLECULAR NEUROBIOLOGY
ISSN0893-7648
Volume54Issue:5Pages:3395-3406
Abstract

Schizophrenia is one of the most severe psychiatric disorders. Increasing evidence implicates that neurodegeneration is a component of schizophrenia pathology and some atypical antipsychotics are neuroprotective and successful in slowing the progressive morphological brain changes. As an antipsychotic agent, clozapine has superior and unique effects, but the intracellular signaling pathways that mediate clozapine action remain to be elucidated. The phosphatidylinositol-3-kinase/protein kinase B/Forkhead box O3 (PI3K/Akt/FoxO3a) pathway is crucial for neuronal survival. However, little information is available regarding this pathway with clozapine. In the present study, we investigated the protective effect of clozapine on the PC12 cells against corticosterone toxicity. Our results showed that corticosterone decreases the phosphorylation of Akt and FoxO3a, leading to the nuclear localization of FoxO3a and the apoptosis of PC12 cells, while clozapine concentration dependently protected PC12 cells against corticosterone insult. Pathway inhibitors studies displayed that the protective effect of clozapine was reversed by LY294002 and wortmannin, two PI3K inhibitors, or Akt inhibitor VIII although several other inhibitors had no effect. The shRNA knockdown results displayed that downregulated Akt1 or FoxO3a attenuated the protective effect of clozapine. Western blot analyses revealed that clozapine induced the phosphorylation of Akt and FoxO3a by the PI3K/Akt pathway and reversed the reduction of the phosphorylated Akt and FoxO3a and the nuclear translocation of FoxO3a evoked by corticosterone. Together, our data indicates that clozapine protects PC12 cells against corticosterone-induced cell death by modulating activity of the PI3K/Akt/FoxO3a pathway.

KeywordSchizophrenia Clozapine Corticosterone Pi3k/akt/foxo3a Neuroprotection
DOI10.1007/s12035-016-9904-4
URLView the original
Indexed BySCI ; SSCI ; SSCI
Language英语
WOS Research AreaNeurosciences & Neurology
WOS SubjectNeurosciences
WOS IDWOS:000402100100026
PublisherHUMANA PRESS INC
The Source to ArticleWOS
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Cited Times [WOS]:11   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Health Sciences
Affiliation1.Faculty of Health Sciences, University of Macau, Taipa, Macau, China
2.The School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China
3.Douglas Hospital Research Center, McGill University, Montreal, Canada
4.School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, 20 Cornwall St, Woolloongabba, QLD 4102, Australia
First Author AffilicationFaculty of Health Sciences
Recommended Citation
GB/T 7714
Zeng, Zhiwen,Wang, Xue,Bhardwaj, Sanjeev K.,et al. The Atypical Antipsychotic Agent, Clozapine, Protects Against Corticosterone-Induced Death of PC12 Cells by Regulating the Akt/FoxO3a Signaling Pathway[J]. MOLECULAR NEUROBIOLOGY,2017,54(5):3395-3406.
APA Zeng, Zhiwen.,Wang, Xue.,Bhardwaj, Sanjeev K..,Zhou, Xuanhe.,Little, Peter J..,...&Zheng, Wenhua.(2017).The Atypical Antipsychotic Agent, Clozapine, Protects Against Corticosterone-Induced Death of PC12 Cells by Regulating the Akt/FoxO3a Signaling Pathway.MOLECULAR NEUROBIOLOGY,54(5),3395-3406.
MLA Zeng, Zhiwen,et al."The Atypical Antipsychotic Agent, Clozapine, Protects Against Corticosterone-Induced Death of PC12 Cells by Regulating the Akt/FoxO3a Signaling Pathway".MOLECULAR NEUROBIOLOGY 54.5(2017):3395-3406.
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