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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
38
pubmed:dateCreated
2003-9-15
pubmed:abstractText
Generation of the amyloid peptide through proteolytic processing of the amyloid precursor protein by beta- and gamma-secretases is central to the etiology of Alzheimer's disease. beta-secretase, known more widely as the beta-site amyloid precursor protein cleaving enzyme 1 (BACE1), has been identified as a transmembrane aspartic proteinase, and its ectodomain has been reported to be cleaved and secreted from cells in a soluble form. The extracellular domains of many diverse proteins are known to be cleaved and secreted from cells by a process known as ectodomain shedding. Here we confirm that the ectodomain of BACE1 is secreted from cells and that this processing is up-regulated by agents that activate protein kinase C. A metalloproteinase is involved in the cleavage of BACE1 as hydroxamic acid-based metalloproteinase inhibitors abolish the release of shed BACE1. Using potent and selective inhibitors, we demonstrate that ADAM10 is a strong candidate for the BACE1 sheddase. In addition, we show that the BACE1 sheddase is distinct from alpha-secretase and, importantly, that inhibition of BACE1 shedding does not influence amyloid precursor protein processing at the beta-site.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
19
pubmed:volume
278
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
36264-8
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:12857759-Amyloid Precursor Protein Secretases, pubmed-meshheading:12857759-Aspartic Acid Endopeptidases, pubmed-meshheading:12857759-Binding Sites, pubmed-meshheading:12857759-Blotting, Western, pubmed-meshheading:12857759-Cell Line, pubmed-meshheading:12857759-Dose-Response Relationship, Drug, pubmed-meshheading:12857759-Electrophoresis, Polyacrylamide Gel, pubmed-meshheading:12857759-Endopeptidases, pubmed-meshheading:12857759-Enzyme Activation, pubmed-meshheading:12857759-Humans, pubmed-meshheading:12857759-Hydroxamic Acids, pubmed-meshheading:12857759-Inhibitory Concentration 50, pubmed-meshheading:12857759-Models, Chemical, pubmed-meshheading:12857759-Mutagenesis, Site-Directed, pubmed-meshheading:12857759-Protein Binding, pubmed-meshheading:12857759-Protein Kinase C, pubmed-meshheading:12857759-Protein Structure, Tertiary, pubmed-meshheading:12857759-Up-Regulation
pubmed:year
2003
pubmed:articleTitle
Characterization of the ectodomain shedding of the beta-site amyloid precursor protein-cleaving enzyme 1 (BACE1).
pubmed:affiliation
Neurology and Gastrointestinal Centre of Excellence for Drug Discovery, GlaxoSmithKline Research & Development Limited, New Frontiers Science Park, Third Avenue, Harlow, Essex, CM19 5AW, United Kingdom. Ishrut_2_Hussain@gsk.com
pubmed:publicationType
Journal Article