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BACE inhibitor NB-360 reveals strong reduction of amyloid-β generation, robust blockade of amyloid deposition and lowering of neuroinflammation in APP transgenic mice

Neumann, Ulf and Rueeger, Heinrich and Machauer, Rainer and Veenstra, Siem and Lueoend, Rainer Martin and Tintelnot-Blomley, Marina and Laue, Grit and Beltz, Karen and Vogg, Barbara and Schmid, Peter and Frieauff, Wilfried and Shimshek, Derya and Staufenbiel, Matthias and Jacobson, Laura (2015) BACE inhibitor NB-360 reveals strong reduction of amyloid-β generation, robust blockade of amyloid deposition and lowering of neuroinflammation in APP transgenic mice. Molecular Neurodegeneration, 10 (44). ISSN 1750-1326

Abstract

Reducing the generation of β-amyloid peptide by inhibition of BACE-1 is currently investigated as a disease-modifying therapy for Alzheimer’s disease. First generations of peptidomimetic BACE-1 inhibitors showed low efficacy in vivo, mainly due to limited exposure in the brain. Recently, compounds with a cyclic amidine scaffold were found that overcome such limitations. We report here the characterization of NB-360, a compound derived from the 1,4-oxazine scaffold, which has excellent potency and brain penetration. NB-360 acutely inhibited the generation of Aβ40 and Aβ42 in APP51/16 mice, rats and dogs. Upon chronic treatment in APP51/16 transgenic mice, NB-360 completely blocked amyloid deposition. Furthermore, NB-360 significantly reduced signs of plaque-related brain inflammation, measured as the number of activated microglia cells and astrocytes. These data demonstrate the a highly attractive combination of drug-like properties in compound NB-360, and further indicate that BACE-1 inhibition, by preventing plaque deposition, may also prevent plaque-associated neuroinflammation

Item Type: Article
Keywords: Alzheimer’s disease, BACE-1, inhibitor, amyloid-β, neuroinflammation
Date Deposited: 13 Oct 2015 13:11
Last Modified: 13 Oct 2015 13:11
URI: https://oak.novartis.com/id/eprint/24959

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