Abstract
Alzheimer’s disease (AD), the most prevalent representation of dementia, is a neurodegenerative disease resulting from the degenerative disturbance of the central nervous system. Previous studies have indicated that miR-107 is reduced in the brain neocortex of patients with AD; however, its underlying mechanism is not clear. Therefore, the objective of this study was to explore the question of whether miR-107 participates in AD development. The study confirmed that the miR-107 expression levels were dramatically decreased in patients with AD and in beta-amyloid (Aβ) (Aβ)-treated SH-SY5Y cells compared with control groups. Upregulation of miR-107 reversed the inhibitory role of Aβ on cell proliferation and viability. In addition, miR-107 upregulation also ameliorated the Aβ-induced inflammation and apoptosis of SH-SY5Y cells. Furthermore, using bioinformatic prediction, dual-luciferase reporter assay (DLRA), quantitative polymerase chain reaction (qPCR), and Western blot (WB), miR-107 was confirmed to reduce the expression level of FGF7, and it subsequently deactivated the FGFR2/PI3K/Akt pathway. Moreover, FGF7 overexpression counteracted the role of miR-107 in the viability, proliferation, inflammation, and apoptosis of Aβ-induced SH-SY5Y cells.
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Funding
This work was supported by the Project of National Natural Science Foundation of China (No. 81760847); the Key Research and Development Program of Science and Technology Plan Project of Guangxi (No. Guike AB16380324); the Key Project of National Natural Science Foundation of China (No. 2018GXNSFDA050018); the Project of Guangxi Key Laboratory of Chinese Medicine Foundation Research (No. 16-380-58-04); the Youth Innovation Research Team of Guangxi University of Traditional Chinese Medicine (No. 2016QT004); and the High-level Talent Team Cultivation Project of Qihuang Project of Guangxi University of Traditional Chinese Medicine (No. 2018003).
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Chen, W., Wu, L., Hu, Y. et al. MicroRNA-107 Ameliorates Damage in a Cell Model of Alzheimer’s Disease by Mediating the FGF7/FGFR2/PI3K/Akt Pathway. J Mol Neurosci 70, 1589–1597 (2020). https://doi.org/10.1007/s12031-020-01600-0
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DOI: https://doi.org/10.1007/s12031-020-01600-0