beta-Amyloid peptide increases levels of iron content and oxidative stress in human cell and Caenorhabditis elegans models of Alzheimer disease

	beta-Amyloid peptide increases levels of iron content and oxidative stress in human cell and Caenorhabditis elegans models of Alzheimer disease
	Wan, L; Nie, GJ; Zhang, J; Luo, YF; Zhang, P; Zhang, ZY; Zhao, BL; 张鹏(多); Zhang ZY(张智勇)
刊名	FREE RADICAL BIOLOGY AND MEDICINE
	2011
卷号	50 期号:1 页码:#REF!
关键词	Alzheimer disease Neuronal iron metabolism beta-Amyloid peptide Oxidative stress Free radicals
通讯作者	Zhao, BL (reprint author), Chinese Acad Sci, Inst Biophys, State Key Lab Brain & Cognit Sci, Beijing 100101, Peoples R China.
英文摘要	Recent studies indicate that the deposition of beta-amyloid peptide (A beta) is related to the pathogenesis of Alzheimer disease (AD); however, the underlying mechanism is still not clear. The abnormal interactions of A beta with metal ions such as iron are implicated in the process of A beta deposition and oxidative stress in AD brains. In this study, we observed that A beta increased the levels of iron content and oxidative stress in SH-SY5Y cells overexpressing the Swedish mutant form of human beta-amyloid precursor protein (APPsw) and in Caenorhabditis elegans A beta-expressing strain CL2006. Intracellular iron and calcium levels and reactive oxygen species and nitric oxide generation significantly increased in APPsw cells compared to control cells. The activity of superoxide dismutase and the antioxidant levels of APPsw cells were significantly lower than those of control cells. Moreover, iron treatment decreased cell viability and mitochondrial membrane potential and aggravated oxidative stress damage as well as the release of A beta 1-40 from the APPsw cells. The iron homeostasis disruption in APPsw cells is very probably associated with elevated expression of the iron transporter divalent metal transporter 1, but not transferrin receptor. Furthermore, the C. elegans with A beta-expression had increased iron accumulation. In aggregate, these results demonstrate that A beta accumulation in neuronal cells correlated with neuronal iron homeostasis disruption and probably contributed to the pathogenesis of AD. (C) 2010 Elsevier Inc. All rights reserved.
学科主题	Biochemistry & Molecular Biology; Endocrinology & Metabolism
类目[WOS]	Biochemistry & Molecular Biology ; Endocrinology & Metabolism
收录类别	SCI
WOS记录号	WOS:000286407700013
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/226308]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Wan, L,Nie, GJ,Zhang, J,et al. beta-Amyloid peptide increases levels of iron content and oxidative stress in human cell and Caenorhabditis elegans models of Alzheimer disease[J]. FREE RADICAL BIOLOGY AND MEDICINE,2011,50(1):#REF!.
APA	Wan, L.,Nie, GJ.,Zhang, J.,Luo, YF.,Zhang, P.,...&张智勇.(2011).beta-Amyloid peptide increases levels of iron content and oxidative stress in human cell and Caenorhabditis elegans models of Alzheimer disease.FREE RADICAL BIOLOGY AND MEDICINE,50(1),#REF!.
MLA	Wan, L,et al."beta-Amyloid peptide increases levels of iron content and oxidative stress in human cell and Caenorhabditis elegans models of Alzheimer disease".FREE RADICAL BIOLOGY AND MEDICINE 50.1(2011):#REF!.