Large-Scale Oral Treatment Study with the Four Most Promising D3-Derivatives for the Treatment of Alzheimer's Disease.
Molecules
; 22(10)2017 Oct 10.
Article
in En
| MEDLINE
| ID: mdl-28994710
ABSTRACT
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that is associated with the aggregation of the amyloid ß protein (Aß). Aß oligomers are currently thought to be the major neurotoxic agent responsible for disease development and progression. Thus, their elimination is highly desirable for therapy development. Our therapeutic approach aims at specific and direct elimination of toxic Aß oligomers by stabilizing Aß monomers in an aggregation-incompetent conformation. We have proven that our lead compound "D3", an all d-enantiomeric-peptide, specifically eliminates Aß oligomers in vitro. In vivo, D3 enhances cognition and reduces plaque load in several transgenic AD mouse models. Here, we performed a large-scale oral proof of concept efficacy study, in which we directly compared four of the most promising D3-derivatives in transgenic mice expressing human amyloid precursor protein with Swedish and London mutations (APPSL), transgenic mice, to identify the most effective compound. RD2 and D3D3, both derived from D3 by rational design, were discovered to be the most effective derivatives in improving cognition in the Morris water maze. The performance of RD2- and D3D3-treated mice within the Morris water maze was significantly better than placebo-treated mice and, importantly, nearly as good as those of non-transgenic littermates, suggesting a complete reversal of the cognitive deficit of APPSL mice.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Oligopeptides
/
Amyloid beta-Peptides
/
Alzheimer Disease
Type of study:
Clinical_trials
Limits:
Animals
/
Female
/
Humans
Language:
En
Year:
2017
Type:
Article