The proposed research represents the coordination of a number of existing facilities and resources aimed at defining the role(s) of DNA methylation in the molecular pathology of Alzheimer's disease. We will integrate the expertise of the Coleman/Rogers lab in Alzheimer's disease with the expertise of the Laird lab in DNA methylation to identify DNA methylation sites in a genome wide study of an affected (temporal neocortex) and a minimally affected (cerebellum) brain region of Alzheimer's disease (AD) and non demented control cases. The 550 brains to be utilized in this proposed study will come from the comprehensive and outstanding Brain Bank at Sun Health Research Institute. Since promoter DNA methylation only relates to the potential for gene expression, it may not be a very good predictor of gene expression differences. Consequently, we will determine the relationship between specific sites of DNA methylation and altered expression of specific genes in AD by correlating our DNA methylation data with an existing set of Affymetrix data on gene expression in ~100 normal and AD brains. Finally, to specify cell classes affected we will conduct combined immunohistochemistry and in situ htbridization studies to define cell classes affected by specific DNA methylation/expression changes.

Public Health Relevance

A successful attack on Alzheimer's disease requires two components: 1) early diagnosis and 2) effective treatment that will significantly delay or halt disease progression. The genome wide study of DNA methylation in Alzheimer's disease proposed here will elucidate and extend the previously under appreciated role of a general molecular mechanism in the basic biology of AD and will lead to earlier diagnosis and new approaches to treatment of Alzheimer's disease.

Agency
National Institute of Health (NIH)
Institute
National Institute on Aging (NIA)
Type
Research Project (R01)
Project #
3R01AG036400-02S1
Application #
8138180
Study Section
Special Emphasis Panel (ZRG1-GGG-M (53))
Program Officer
Petanceska, Suzana
Project Start
2009-09-15
Project End
2014-08-31
Budget Start
2010-09-15
Budget End
2011-08-31
Support Year
2
Fiscal Year
2010
Total Cost
$100,000
Indirect Cost
Name
Banner Sun Health Research Institute
Department
Type
DUNS #
960181055
City
Sun City
State
AZ
Country
United States
Zip Code
85351
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Rogers, Joseph; Mastroeni, Diego; Grover, Andrew et al. (2011) The epigenetics of Alzheimer's disease--additional considerations. Neurobiol Aging 32:1196-7
Chapman, Robert M; Mapstone, Mark; McCrary, John W et al. (2011) Predicting conversion from mild cognitive impairment to Alzheimer's disease using neuropsychological tests and multivariate methods. J Clin Exp Neuropsychol 33:187-99

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