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Neurotoxicity Research

Neurotoxicity Research

IF: 2.9
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Corticosterone Induced the Increase of proBDNF in Primary Hippocampal Neurons Via Endoplasmic Reticulum Stress

Published:1 August 2020 DOI: 10.1007/s12640-020-00201-4 PMID: 32378057
Yu Liu, Guang-Jing Zou, Bo-Xuan Tu, Zhao-Lan Hu, Cong Luo, Yan-Hui Cui, Yang Xu, Fang Li, Ru-Ping Dai, Fang-Fang Bi, Chang-Qi Li

Abstract

Major depression disorder is one of the most common psychiatric disorders that greatly threaten the mental health of a large population worldwide. Previous studies have shown that endoplasmic reticulum (ER) stress plays an important role in the pathophysiology of depression, and current research suggests that brain-derived neurotrophic factor precursor (proBDNF) is involved in the development of depression. However, the relationship between ER and proBDNF in the pathophysiology of depression is not well elucidated. Here, we treated primary hippocampal neurons of mice with corticosterone (CORT) and evaluated the relationship between proBDNF and ERS. Our results showed that CORT induced ERS and upregulated the expression of proBDNF and its receptor, Follistatin-like protein 4 (FSTL4), which contributed to significantly decreased neuronal viability and expression of synaptic-related proteins including NR2A, PSD95, and SYN. Anti-proBDNF neutralization and ISRIB (an inhibitor of the ERS) treatment, respective ly, protected neuronal viabilities and increased the expression of synaptic-related proteins in corticosterone-exposed neurons. ISRIB treatment reduced the expression of proBDNF and FSTL4, whereas anti-proBDNF treatment did not affect ERS markers (Grp78, p-PERK, ATF4) expression. Our study presented evidence that CORT-induced ERS negatively regulated the neuronal viability and the level of synaptic-related protein of primary neurons via the proBDNF/FSTL4 pathway.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
ISRIB 548470-11-7 C22H24Cl2N2O4 133 suppliers $54.00-$2395.30
ISRIB 548470-11-7 C22H24Cl2N2O4 133 suppliers $54.00-$2395.30
ISRIB 548470-11-7 C22H24Cl2N2O4 133 suppliers $54.00-$2395.30
ISRIB 548470-11-7 C22H24Cl2N2O4 133 suppliers $54.00-$2395.30

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