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Propionic acid induces mitochondrial dysfunction and affects gene expression for mitochondria biogenesis and neuronal differentiation in SH-SY5Y cell line

Authors
Kim, Soon AeJang, Eun HyeMun, Ji YoungChoi, Hyosun
Issue Date
Dec-2019
Publisher
ELSEVIER
Keywords
Propionic acid; Mitochondria; Notch signaling; Neuronal cells
Citation
NEUROTOXICOLOGY, v.75, pp.116 - 122
Journal Title
NEUROTOXICOLOGY
Volume
75
Start Page
116
End Page
122
URI
http://scholarworks.bwise.kr/kbri/handle/2023.sw.kbri/656
DOI
10.1016/j.neuro.2019.09.009
ISSN
0161-813X
Abstract
Studies in animal models have shown that the short-chain fatty acid, propionic acid (PPA), interferes with mitochondrial metabolism leading to mitochondrial dysfunction and behavioral abnormalities. The aim of this study was to investigate the effects of PPA on mitochondrial function and gene expression in neuronal cells. SH-SY5Y cells and normal human neural progenitor (NHNP) cells were exposed to 1, 5 mM PPA for 4 or 24 h and we found that the mitochondrial potential measured in SH-SY5Y cells decreased in a dose-dependent manner after PPA treatment. Electron microscopy analysis revealed that the size of the mitochondria was significantly reduced following PPA treatment. A dose-dependent increase in the mitochondrial DNA copy number was observed in the PPA-treated cells. The expression of the mitochondrial biogenesis-related proteins PGC-1 alpha, TFAM, SIRT3, and COX4 was significantly increased after PPA treatment. Transcriptome analysis revealed that mRNA expression in the notch signaling-related genes ASCL1 and LFNG changed after PPA treatment and the positive correlated protein expression changes were also observed. These results revealed that PPA treatment may affect neuro-development by altering mitochondrial function and notch signaling-related gene expression.
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