期刊
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fcell.2021.609908
关键词
Alzheimer's disease; neurodegeneration; synaptic vesicle protein 2A; Tau; A beta; PI3K signaling pathway
资金
- National Natural Science Foundation of China [81701732, 82071962, 82001143]
- Shanghai Municipal Science and Technology Major Project [2018SHZDZX01]
- Shanghai Municipal Key Clinical Specialty [shslczdzk03402]
- Clinical Research Plan of SHDC [SHDC2020CR2056B]
- Original research personalized support project [IDF151039/020]
- Science and Technology Commission of Shanghai Municipality [18411952100]
- ZJLab
SV2A expression down-regulation in AD may be related to APP, Aβ, and Tau proteins; SV2A deficiency may lead to an increase in Aβ and Tau hyperphosphorylation, while overexpression may be associated with down-regulation of APP cleaving enzyme and apolipoprotein E genes; evidence suggests the phosphatidylinositol 3-kinase signaling pathway may mediate SV2A regulation influencing AD incidence and development.
Alzheimer's disease (AD), a serious neurodegenerative disease, is pathologically characterized by synaptic loss and dysfunction. Synaptic vesicle protein 2A (SV2A) is an indispensable vesicular protein specifically expressed in synapses and can be used as a biomarker for synaptic density. We found that the expression of SV2A was down-regulated in the hippocampus of AD patients, yet the relation of SV2A to other hallmarks of AD pathology such as amyloid precursor protein (APP), beta-amyloid (A beta), and Tau protein is not thoroughly clear. In addition, SV2A colocalized with APP and was down-regulated at A beta deposition. Moreover, we found that SV2A deficiency leads to a simultaneous increase in A beta and Tau hyperphosphorylation, while SV2A overexpression was associated with downregulation of beta-site APP cleaving enzyme 1 and apolipoprotein E genes. In addition, evidence gained in the study points to the phosphatidylinositol 3-kinase signaling pathway as a possible mediator in SV2A regulation influencing the incidence and development of AD. With limited effective diagnostic methods for AD, a close interplay between SV2A and AD-related proteins demonstrated in our study may provide novel and innovative diagnostic and therapeutic opportunities.
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