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eWAD

Unbalanced Wnt signalling in AD: a DNA methylation effect

Total Cost €

0

EC-Contrib. €

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Partnership

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Project "eWAD" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITY COLLEGE LONDON 

Organization address
address: GOWER STREET
city: LONDON
postcode: WC1E 6BT
website: n.a.

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country United Kingdom [UK]
 Project website https://salinaslabucl.co.uk
 Total cost 183˙454 €
 EC max contribution 183˙454 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2016
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2017
 Duration (year-month-day) from 2017-03-01   to  2019-02-28

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITY COLLEGE LONDON UK (LONDON) coordinator 183˙454.00

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 Project objective

Growing evidence suggests that unbalanced Wnt signalling contributes to early stages of Alzheimer´s Disease (AD). mRNA levels of the Wnt antagonist Dikkoff1 (Dkk1) are increased in AD brains and by Amyloid-ß (Aß) in vitro. Importantly, suppression of Dkk1 activity protects synapses from Aß. Genome-Wide Association Studies also provide evidence for deficient Wnt signalling in AD. The host laboratory has recently demonstrated that Dkk1 induced expression in the adult hippocampus leads to synapse loss and cognitive impairment; defects that can be restored by Wnt signalling reactivation. My preliminary results demonstrate that mRNA levels of several Wnt components (Wnts, their receptors and antagonists) are affected in a transgenic mouse model of familial AD, suggesting a general downregulation in Wnt signalling. These findings raise two main questions. Is aberrant expression of Wnt components an early event in AD? What mechanisms lead to aberrant Wnt component expression in AD? Given that Wnt signalling is crucial for synapse maintenance, and that my preliminary results suggest a coordinated downregulation of the Wnt pathway in AD, I will examine the role of DNA methylation at Wnt component genes in AD and how this affects synapse integrity. The potential role of DNA methylation is supported by: i) AD patients and mouse models exhibit global DNA hypomethylation and gene-specific DNA hypermethylation, ii) DNA methylation at promoters leads to gene repression, but intragenic methylation can enhance transcription, iii) Wnt components contain CpG islands at their promoters and/or intragenic regions, and iv) some Wnt components are regulated by DNA methylation in cancer. My work will define the role of epigenetic regulation of Wnt components under physiological conditions and determine the relevance of unbalanced Wnt signalling in AD. This research project could also identify new biomarkers and novel therapeutic targets for the treatment of early AD stages.

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The information about "EWAD" are provided by the European Opendata Portal: CORDIS opendata.

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