Amyloid β Induces Early Changes in the Ribosomal Machinery, Cytoskeletal Organization and Oxidative Phosphorylation in Retinal Photoreceptor Cells.
Alzheimer’s disease
TMT
amyloid
autophagy
photoreceptor
proteomics
retina
Journal
Frontiers in molecular neuroscience
ISSN: 1662-5099
Titre abrégé: Front Mol Neurosci
Pays: Switzerland
ID NLM: 101477914
Informations de publication
Date de publication:
2019
2019
Historique:
received:
23
09
2018
accepted:
21
01
2019
entrez:
12
3
2019
pubmed:
12
3
2019
medline:
12
3
2019
Statut:
epublish
Résumé
Amyloid β (Aβ) accumulation and its aggregation is characteristic molecular feature of the development of Alzheimer's disease (AD). More recently, Aβ has been suggested to be associated with retinal pathology associated with AD, glaucoma and drusen deposits in age related macular degeneration (AMD). In this study, we investigated the proteins and biochemical networks that are affected by Aβ in the 661 W photoreceptor cells in culture. Time and dose dependent effects of Aβ on the photoreceptor cells were determined utilizing tandem mass tag (TMT) labeling-based quantitative mass-spectrometric approach. Bioinformatic analysis of the data revealed concentration and time dependent effects of the Aβ peptide stimulation on various key biochemical pathways that might be involved in mediating the toxicity effects of the peptide. We identified increased Tau phosphorylation, GSK3β dysregulation and reduced cell viability in cells treated with Aβ in a dose and time dependent manner. This study has delineated for the first-time molecular networks in photoreceptor cells that are impacted early upon Aβ treatment and contrasted the findings with a longer-term treatment effect. Proteins associated with ribosomal machinery homeostasis, mitochondrial function and cytoskeletal organization were affected in the initial stages of Aβ exposure, which may provide key insights into AD effects on the photoreceptors and specific molecular changes induced by Aβ peptide.
Identifiants
pubmed: 30853886
doi: 10.3389/fnmol.2019.00024
pmc: PMC6395395
doi:
Types de publication
Journal Article
Langues
eng
Pagination
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