PMID- 31545891 OWN - NLM STAT- MEDLINE DCOM- 20200904 LR - 20200904 IS - 1948-7193 (Electronic) IS - 1948-7193 (Linking) VI - 10 IP - 10 DP - 2019 Oct 16 TI - Activation of G-Protein-Coupled Receptor 30 Protects Neurons against Excitotoxicity through Inhibiting Excessive Autophagy Induced by Glutamate. PG - 4227-4236 LID - 10.1021/acschemneuro.9b00287 [doi] AB - Autophagy is a protecting intracellular pathway to transmit unnecessary or dysfunctional components to the lysosome for degeneration. Autophagic imbalance is connected with neurodegeneration. Neurodegenerative diseases including Parkinson's disease, Alzheimer's disease, and Huntington's disease are closely related to excitotoxicity and neuronal loss. Activation of G-protein-coupled receptor 30 (GPR30), an estrogen membrane receptor, protects neurons from excitotoxicity-induced cell death. However, whether autophagy is involved in the neuroprotective effect of GPR30 activation is not well-known. In this study, methyl thiazolyl tetrazolium (MTT), Western blot, monodansylcadaverine (MDC) staining, and immunofluorescent staining were employed to detect the role of autophagy in cultured primary cortical neurons after glutamate exposure and G1 treatment. Pretreatment of G1 (GPR30 specific agonist) reduced neuronal loss through inhibiting excessive autophagy induced by glutamate exposure, which was blocked by GPR30 antagonist G15, phosphatidylinositol-3-kinase (PI3K), and the mammalian target of rapamycin (mTOR) inhibitors. These data suggest that GPR30 protects neurons from cell loss primarily by modulating PI3K-AKT-mTOR signaling pathway. In addition, G1 alone did not affect the basal autophagy and cell viability. We conclude that GPR30 activation reduces glutamate-induced excessive autophagy in neurons and protects neurons against excitotoxicity. FAU - Yue, Jiao AU - Yue J AD - Department of Pharmacology, School of Pharmacy , Fourth Military Medical University , Xi'an 710032 , China. AD - State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Pharmacy, School of Stomatology , Fourth Military Medical University , Xi'an 710032 , China. FAU - Wang, Xin-Shang AU - Wang XS AD - Department of Pharmacology, School of Pharmacy , Fourth Military Medical University , Xi'an 710032 , China. FAU - Feng, Bin AU - Feng B AD - State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Pharmacy, School of Stomatology , Fourth Military Medical University , Xi'an 710032 , China. FAU - Hu, Li-Ning AU - Hu LN AD - Department of Pharmacology, School of Pharmacy , Fourth Military Medical University , Xi'an 710032 , China. FAU - Yang, Liu-Kun AU - Yang LK AD - Department of Pharmacology, School of Pharmacy , Fourth Military Medical University , Xi'an 710032 , China. FAU - Lu, Liang AU - Lu L AD - Department of Pharmacology, School of Pharmacy , Fourth Military Medical University , Xi'an 710032 , China. FAU - Zhang, Kun AU - Zhang K AD - Department of Pharmacology, School of Pharmacy , Fourth Military Medical University , Xi'an 710032 , China. FAU - Wang, Ya-Tao AU - Wang YT AD - Department of Pharmacology, School of Pharmacy , Fourth Military Medical University , Xi'an 710032 , China. FAU - Liu, Shui-Bing AU - Liu SB AUID- ORCID: 0000-0002-9325-3474 AD - Department of Pharmacology, School of Pharmacy , Fourth Military Medical University , Xi'an 710032 , China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191004 PL - United States TA - ACS Chem Neurosci JT - ACS chemical neuroscience JID - 101525337 RN - 0 (1-(4-(6-bromobenzo(1,3)dioxol-5-yl)-3a,4,5,9b-tetrahydro-3H-cyclopenta(c)quinolin-8-yl)ethanone) RN - 0 (4-(6-bromo-1,3-benzodioxol-5-yl)-3a,4,5,9b-3H-cyclopenta(c)quinoline) RN - 0 (Benzodioxoles) RN - 0 (Cyclopentanes) RN - 0 (GPER1 protein, mouse) RN - 0 (Neuroprotective Agents) RN - 0 (Quinolines) RN - 0 (Receptors, Estrogen) RN - 0 (Receptors, G-Protein-Coupled) RN - 3KX376GY7L (Glutamic Acid) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) SB - IM MH - Animals MH - Autophagy/*drug effects MH - Benzodioxoles/pharmacology MH - Cell Survival/drug effects MH - Cerebral Cortex/drug effects/metabolism MH - Cyclopentanes/pharmacology MH - Glutamic Acid/*pharmacology MH - Mice MH - Neurons/*drug effects/metabolism MH - Neuroprotective Agents/*pharmacology MH - Phosphatidylinositol 3-Kinases/metabolism MH - Phosphorylation/drug effects MH - Proto-Oncogene Proteins c-akt/metabolism MH - Quinolines/pharmacology MH - Receptors, Estrogen/antagonists & inhibitors/metabolism MH - Receptors, G-Protein-Coupled/*agonists/antagonists & inhibitors/metabolism MH - Signal Transduction/drug effects OTO - NOTNLM OT - GPR30 OT - autophagy OT - excitotoxicity OT - glutamate OT - mTOR OT - neuron EDAT- 2019/09/24 06:00 MHDA- 2020/09/05 06:00 CRDT- 2019/09/24 06:00 PHST- 2019/09/24 06:00 [pubmed] PHST- 2020/09/05 06:00 [medline] PHST- 2019/09/24 06:00 [entrez] AID - 10.1021/acschemneuro.9b00287 [doi] PST - ppublish SO - ACS Chem Neurosci. 2019 Oct 16;10(10):4227-4236. doi: 10.1021/acschemneuro.9b00287. Epub 2019 Oct 4.