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• W2024351982 startingPage "15374" @default.
• W2024351982 abstract "Aberrant amyloid β (Aβ) production plays a causal role in Alzheimer disease pathogenesis. A major cellular pathway for Aβ generation is the activity-dependent endocytosis and proteolytic cleavage of the amyloid precursor protein (APP). However, the molecules controlling activity-dependent APP trafficking in neurons are less defined. Mints are adaptor proteins that directly interact with the endocytic sorting motif of APP and are functionally important in regulating APP endocytosis and Aβ production. We analyzed neuronal cultures from control and Mint knockout neurons that were treated with either glutamate or tetrodotoxin to stimulate an increase or decrease in neuronal activity, respectively. We found that neuronal activation by glutamate increased APP endocytosis, followed by elevated APP insertion into the cell surface, stabilizing APP at the plasma membrane. Conversely, suppression of neuronal activity by tetrodotoxin decreased APP endocytosis and insertion. Interestingly, we found that activity-dependent APP trafficking and Aβ generation were blocked in Mint knockout neurons. We showed that wild-type Mint1 can rescue APP internalization and insertion in Mint knockout neurons. In addition, we found that Mint overexpression increased excitatory synaptic activity and that APP was internalized predominantly to endosomes associated with APP processing. We demonstrated that presenilin 1 (PS1) endocytosis requires interaction with the PDZ domains of Mint1 and that this interaction facilitates activity-dependent colocalization of APP and PS1. These findings demonstrate that Mints are necessary for activity-induced APP and PS1 trafficking and provide insight into the cellular fate of APP in endocytic pathways essential for Aβ production." @default.
• W2024351982 created "2016-06-24" @default.
• W2024351982 creator A5023025306 @default.
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• W2024351982 creator A5075431238 @default.
• W2024351982 creator A5081954870 @default.
• W2024351982 date "2014-05-01" @default.
• W2024351982 modified "2023-10-15" @default.
• W2024351982 title "Mint Proteins Are Required for Synaptic Activity-dependent Amyloid Precursor Protein (APP) Trafficking and Amyloid β Generation" @default.
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• W2024351982 doi "https://doi.org/10.1074/jbc.m113.541003" @default.
• W2024351982 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4140894" @default.
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• W2024351982 hasPublicationYear "2014" @default.
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