Gleevec inhibits -amyloid production but not Notch cleavage

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Gleevec inhibits -amyloid production but not Notch cleavage

Amyloid(A ) peptides, consisting mainly of 40 and 42 aa (A 40 and A 42, respectively), are metabolites of the amyloid precursor protein and are believed to be major pathological determinants of Alzheimer’s disease. The proteolytic cleavages that form the A N and C termini are catalyzed by -secretase and -secretase, respectively. Here we demonstrate that -secretase generation of A in an N2a cell...

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Notch receptor cleavage depends on but is not directly executed by presenilins.

Notch receptors undergo three distinct proteolytic cleavages during maturation and activation. The third cleavage occurs within the plasma membrane and results in the release and translocation of the intracellular domain into the nucleus to execute Notch signaling. This so-called gamma-secretase cleavage is under the control of presenilins, but it is not known whether presenilins themselves car...

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X11a impairs c- but not b-cleavage of amyloid precursor protein

The phosphotyrosine binding domain of the neuronal protein X11a/mint-1 binds to the C-terminus of amyloid precursor protein (APP) and inhibits catabolism to b-amyloid (Ab), but the mechanism of this effect is unclear. Coexpression of X11a or its PTB domain with APPswe inhibited secretion of Ab40 but not APPsbswe, suggesting inhibition of cbut not b-secretase. To further probe cleavage(s) inhibi...

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Notch (N) is a large transmembrane protein that acts as a receptor in an evolutionarily conserved intercellular signalling pathway. Because of this conservation, it has been assumed that biochemical events mediating N function are identical in all species. For instance, intracellular maturation by furin protease and subunit assembly leading to the formation of a heterodimeric cell surface N rec...

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Alzheimer's disease mutations in APP but not γ-secretase modulators affect epsilon-cleavage-dependent AICD production.

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2003

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.1534745100