Neural Stem Cell Death Mechanisms Induced by Amyloid Beta.
10.12779/dnd.2017.16.4.121
- Author:
Jongmin LEE
1
;
Hyun Hee PARK
;
Seong Ho KOH
;
Hojin CHOI
Author Information
1. Department of Neurology, Hanyang University Guri Hospital, Guri, Korea. chj@hanyang.ac.kr
- Publication Type:Original Article
- Keywords:
amyloid beta;
neural stem cells;
proteomics
- MeSH:
Alzheimer Disease;
Amyloid*;
Animals;
Blotting, Western;
Brain;
Bromodeoxyuridine;
Cell Proliferation;
Central Nervous System;
Fructose-Bisphosphate Aldolase;
Glycogen Synthase;
Humans;
L-Lactate Dehydrogenase;
Neural Stem Cells*;
Plaque, Amyloid;
Proteomics;
Trypan Blue
- From:Dementia and Neurocognitive Disorders
2017;16(4):121-127
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND AND PURPOSE: Amyloid beta (Aβ) is the main component of amyloid plaques, which are deposited in the brains of patients with Alzheimer's disease (AD). Biochemical and animal studies support the central role of Aβ in AD pathogenesis. Despite several investigations focused on the pathogenic mechanisms of Aβ, it is still unclear how Aβ accumulates in the central nervous system and subsequently initiates the disease at the cellular level. In this study, we investigated the pathogenic mechanisms of Aβ using proteomics and antibody microarrays. METHODS: To evaluate the effect of Aβ on neural stem cells (NSCs), we treated primary cultured cortical NSCs with several doses of Aβ for 48 h. A 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay, trypan blue staining, and bromodeoxyuridine cell proliferation assay were performed. We detected several intracellular proteins that may be associated with Aβ by proteomics and Western blotting analysis. RESULTS: Various viability tests showed that Aβ decreased NSCs viability and cell proliferation in a concentration-dependent manner. Aβ treatment significantly decreased lactate dehydrogenase B, high-mobility group box 1, aldolase C, Ezrin, and survival signals including phosphorylated phosphoinositide 3-kinase, Akt, and glycogen synthase kinase-3β. CONCLUSIONS: These results suggest that several factors determined by proteomics and Western blot hold the clue to Aβ pathogenesis. Further studies are required to investigate the role of these factors.
