PMID- 29299155 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20191120 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 8 IP - 66 DP - 2017 Dec 15 TI - Neuroprotection by aripiprazole against beta-amyloid-induced toxicity by P-CK2alpha activation via inhibition of GSK-3beta. PG - 110380-110391 LID - 10.18632/oncotarget.22777 [doi] AB - Psychosis is reported over 30% of patients with Alzheimer's disease (AD) in clinics. Aripiprazole is an atypical antipsychotic drug with partial agonist activity at the D(2) dopamine and 5-HT(1A) receptors with low side-effect profile. We identified aripiprazole is able to overcome the amyloid-beta (Abeta)-evoked neurotoxicity and then increase the cell viability. This study elucidated the mechanism(s) by which aripiprazole ameliorates Abeta1-42-induced decreased neurite outgrowth and viability in neuronal cells. Pretreatment with aripiprazole increased Brain-derived neurotrophic factor (BDNF) mRNA and protein expressions in N2a cells. Additionally, phosphorylated casein kinase 2alpha at Y 255 (P-CK2alpha) was increased in time- and concentration-dependent manners. Furthermore, Abeta1-42-induced decreased BDNF and P-CK2alpha expression were increased over control level by aripiprazole. Subsequently, Abeta1-42-induced decreased levels of phosphorylated glycogen synthase-3beta at Ser9 (P-GSK-3beta) and nuclear P-beta-catenin (Ser675) were elevated by aripiprazole, which were inhibited by K252A (inhibitor of BDNF receptor) and tetrabromocinnamic acid (TBCA, CK2 inhibitor), indicating that BDNF and P-CK2alpha activation are implicated in the aripiprazole effects. Expressions of cyclin D1 and insulin-like growth factor 2 (IGF2) mRNA were increased by aripiprazole; even in the presence of Abeta1-42, which was blocked by K252A and TBCA. In CK2alpha gene-silenced N2a cells, aripiprazole failed to increase P-GSK-3beta and P-beta-catenin expressions. Consequently, aripiprazole ameliorated Abeta1-42-induced attenuation of neurite elongation in HT22 cells, and this effect was blocked by both TBCA and imatinib. Decreased viability induced by Abeta1-42 was recovered by aripiprazole. These findings provide evidence supporting that aripiprazole can provide an effective therapeutic strategy against Abeta-induced neurotoxicity in AD-associated psychosis. FAU - Park, So Youn AU - Park SY AD - Department of Pharmacology, School of Medicine, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea. AD - Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea. FAU - Shin, Hwa Kyoung AU - Shin HK AD - Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea. FAU - Lee, Won Suk AU - Lee WS AD - Department of Pharmacology, School of Medicine, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea. FAU - Bae, Sun Sik AU - Bae SS AD - Department of Pharmacology, School of Medicine, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea. AD - Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea. FAU - Kim, Koanhoi AU - Kim K AD - Department of Pharmacology, School of Medicine, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea. FAU - Hong, Ki Whan AU - Hong KW AD - Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea. FAU - Kim, Chi Dae AU - Kim CD AD - Department of Pharmacology, School of Medicine, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea. AD - Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea. LA - eng PT - Journal Article DEP - 20171130 PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 PMC - PMC5746390 OTO - NOTNLM OT - CK2alpha OT - GSK-3beta OT - Wnt/beta-catenin pathway OT - alzheimer's disease OT - aripiprazole COIS- CONFLICTS OF INTEREST The authors declare no potential conflicts of interest. EDAT- 2018/01/05 06:00 MHDA- 2018/01/05 06:01 PMCR- 2017/12/15 CRDT- 2018/01/05 06:00 PHST- 2017/05/13 00:00 [received] PHST- 2017/11/19 00:00 [accepted] PHST- 2018/01/05 06:00 [entrez] PHST- 2018/01/05 06:00 [pubmed] PHST- 2018/01/05 06:01 [medline] PHST- 2017/12/15 00:00 [pmc-release] AID - 22777 [pii] AID - 10.18632/oncotarget.22777 [doi] PST - epublish SO - Oncotarget. 2017 Nov 30;8(66):110380-110391. doi: 10.18632/oncotarget.22777. eCollection 2017 Dec 15.