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Neurobiol Aging. 2007 Mar;28(3):357-70. Epub 2006 Mar 7.

Proteomic analysis of brain tissue from an Alzheimer's disease mouse model by two-dimensional difference gel electrophoresis.

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1
Alzheimer's Disease Group, Paris Research Centre, Aventis Pharma, 94403 Vitry sur Seine Cedex, France. dsizova@mail.med.upenn.edu <dsizova@mail.med.upenn.edu>

Abstract

We used a beta-amyloid precursor protein (APP) transgenic (Tg) mouse model that displays some of the typical Alzheimer-associated pathological features to study the brain proteoma associated with amyloid plaque deposition. Two groups (male and female) of 14-month-old Tg mice were compared with their wild type littermates. We used differential 2D electrophoresis coupled with mass spectrometry to generate one of the first complete image of changes in brain protein expression occurring in this well-recognized model of Alzheimer's disease (AD). We identified 15 different proteins, which are significantly regulated in this pathology (p<0.05, > or =1.5-fold variation in expression comparing with the wild type samples). These comprise a number of proteins that were already known to be implicated in AD and neurodegeneration, as well as several proteins which relationship with AD had not been shown before. Identified proteins were grouped according to their biological key pathways. Results obtained are discussed in view of existing bibliographic data on human AD transcriptoma and proteoma.

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