Abstract
Our understanding of the mechanisms whereby BACE1, the aspartyl protease required for the initial cleavage of APP to generate amyloid-beta (Abeta), is regulated in Alzheimer's disease (AD) remains incomplete. In this issue of Neuron, O'Connor and coworkers show how energy deprivation, a potential risk factor in AD, triggers the phosphorylation of the translation initiation factor eIF2alpha to elevate the translation efficiency of a set of stress-related transcripts, including that of BACE1, and increases the level of BACE1, thereby accelerating amyloidogenesis.
MeSH terms
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Alzheimer Disease / metabolism*
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Alzheimer Disease / pathology
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Amyloid Precursor Protein Secretases / genetics
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Amyloid Precursor Protein Secretases / metabolism*
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Amyloid beta-Peptides / metabolism*
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Animals
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Aspartic Acid Endopeptidases / genetics
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Aspartic Acid Endopeptidases / metabolism*
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Eukaryotic Initiation Factor-2 / metabolism
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Humans
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Protein Biosynthesis / physiology
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Saccharomyces cerevisiae Proteins / metabolism
Substances
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Amyloid beta-Peptides
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Eukaryotic Initiation Factor-2
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FUN12 protein, S cerevisiae
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Saccharomyces cerevisiae Proteins
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Amyloid Precursor Protein Secretases
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Aspartic Acid Endopeptidases
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BACE1 protein, human