机构：[1]Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia 30322, USA.[2]Department of Neurology, Renmin Hospital of Wuhan University, Wuhan 430060, China.[3]Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA.[4]Department of Neurology, Center for Neurodegenerative Diseases, Emory University School of Medicine, Atlanta, Georgia 30322, USA.[5]Department of Biochemistry, Center for Neurodegenerative Diseases, Emory University School of Medicine, Atlanta, Georgia 30322, USA.[6]Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.[7]Translational Center for Stem Cell Research, Tongji Hospital, Department of Regenerative Medicine, Tongji University School of Medicine, Shanghai 200065, China.[8]Department of Psychiatry and Biobehavioral Sciences, UCLA School of Medicine, Los Angeles, California 90095, USA.[9]Department of Neurology, Xuan Wu Hospital of Capital Medical University, 45 Changchun Street, Beijing 100053, China.神经内科首都医科大学宣武医院
The age-dependent deposition of amyloid-beta peptides, derived from amyloid precursor protein (APP), is a neuropathological hallmark of Alzheimer's disease (AD). Despite age being the greatest risk factor for AD, the molecular mechanisms linking ageing to APP processing are unknown. Here we show that asparagine endopeptidase (AEP), a pH-controlled cysteine proteinase, is activated during ageing and mediates APP proteolytic processing. AEP cleaves APP at N373 and N585 residues, selectively influencing the amyloidogenic fragmentation of APP. AEP is activated in normal mice in an age-dependent manner, and is strongly activated in 5XFAD transgenic mouse model and human AD brains. Deletion of AEP from 5XFAD or APP/PS1 mice decreases senile plaque formation, ameliorates synapse loss, elevates long-term potentiation and protects memory. Blockade of APP cleavage by AEP in mice alleviates pathological and behavioural deficits. Thus, AEP acts as a delta-secretase, contributing to the age-dependent pathogenic mechanisms in AD.
基金：
NIH (grants RO1 (NS045627 and 060680)
the NIH/NIAP50 (AG025688) ADRC Center
grants from National Natural Science Foundation of China (No. 81100958, 81571249)
National Key Basic Research Program of China Grant (2010CB945202)
National Science Foundation of China Grant (81330030)
第一作者机构：[1]Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia 30322, USA.[2]Department of Neurology, Renmin Hospital of Wuhan University, Wuhan 430060, China.
通讯作者：
通讯机构：[1]Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia 30322, USA.[7]Translational Center for Stem Cell Research, Tongji Hospital, Department of Regenerative Medicine, Tongji University School of Medicine, Shanghai 200065, China.[8]Department of Psychiatry and Biobehavioral Sciences, UCLA School of Medicine, Los Angeles, California 90095, USA.[9]Department of Neurology, Xuan Wu Hospital of Capital Medical University, 45 Changchun Street, Beijing 100053, China.
推荐引用方式(GB/T 7714)：
Zhentao Zhang,Mingke Song,Xia Liu,et al.Delta-secretase cleaves amyloid precursor protein and regulates the pathogenesis in Alzheimer's disease[J].NATURE COMMUNICATIONS.2015,6:doi:10.1038/ncomms9762.
APA：
Zhentao Zhang,Mingke Song,Xia Liu,Seong Su Kang,Duc M. Duong...&Keqiang Ye.(2015).Delta-secretase cleaves amyloid precursor protein and regulates the pathogenesis in Alzheimer's disease.NATURE COMMUNICATIONS,6,
MLA：
Zhentao Zhang,et al."Delta-secretase cleaves amyloid precursor protein and regulates the pathogenesis in Alzheimer's disease".NATURE COMMUNICATIONS 6.(2015)
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