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Anthocyanins Extracted from Aronia melanocarpa Protect SH-SY5Y Cells against Amyloid-beta (1-42)-Induced Apoptosis by Regulating Ca 2+ Homeostasis and Inhibiting Mitochondrial Dysfunction.
Journal of Agricultural and Food Chemistry 2018 December 13
We investigated the cytoprotective effects of anthocyanins in Aronia melanocarpa against apoptosis induced by Aβ1-42 , a key mediator of AD pathophysiology. We measured intracellular calcium with a colorimetric kit, cellular apoptosis with DAPI, intracellular ROS with the fluorescent marker 2,3-dimethoxy-1,4-naphthoquinone, mitochondrial membrane potential with JC-1, and ATP with a colorimetric kit. Gene transcription and protein expression levels of calmodulin, cytochrome c, caspase-9, cleaved caspase-3, Bcl-2, and Bax were analyzed by RT-PCR and Western blotting. The results showed that pretreatment with anthocyanins significantly inhibited Aβ1-42 -induced apoptosis, decreased intracellular calcium and ROS, and increased ATP and mitochondrial membrane potential. RT-PCR and Western blotting revealed that anthocyanins upregulated the gene transcription and protein expression of calmodulin and Bcl-2 and downregulated those of cytochrome c, caspase-9, cleaved caspase-3, and Bax. A. melanocarpa anthocyanins protected SH-SY5Y cells against Aβ1-42 -induced apoptosis by regulating Ca2+ homeostasis and apoptosis-related genes and inhibiting mitochondrial dysfunction.
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