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HD-DittoGraph SIGNED

HD-DittoGraph: a digital human Embryonic Stem Cell platform for Huntington's repeats

Total Cost €


EC-Contrib. €






 HD-DittoGraph project word cloud

Explore the words cloud of the HD-DittoGraph project. It provides you a very rough idea of what is the project "HD-DittoGraph" about.

genome    cag    trans    gain    candidate    modifier    generating    lof    barcodes    pure    mitotic    sequence    huntingtin    human    gene    exon    screen    neuronal    relies    efficient    htt    platform    acting    size    genetic    disease    thousands    unstable    cas9    perform    length    validated    mechanisms    expansion    sequences    neurogenic    screenings    huntington    constructs    introduce    embryonic    individually    ad    instability    genes    flanking    sequencing    neurons    donor    hes    barcoded    platforms    simultaneous    computational    construction    sgrnas    cells    couples    stem    locus    molecular    insights    networks    causative    function    intend    gof    modifiers    cell    repeat    association    pipelines    causing    unequivocally    dividing    corresponding    novelty    shaped    multiple    identification    differentiating    inducible    cis    crispr    generation    tested    contribution    hoc    functional    subsequently    transcriptome    libraries    divisions    library    striatal    postmitotic    act   

Project "HD-DittoGraph" data sheet

The following table provides information about the project.


Organization address
address: Via Festa Del Perdono 7
city: MILANO
postcode: 20122

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 Italy [IT]
 Total cost 2˙040˙943 €
 EC max contribution 2˙040˙943 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2016-ADG
 Funding Scheme ERC-ADG
 Starting year 2018
 Duration (year-month-day) from 2018-03-01   to  2023-02-28


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITA DEGLI STUDI DI MILANO IT (MILANO) coordinator 1˙868˙443.00


 Project objective

This proposal is aimed at identifying the molecular mechanisms that have brought the human Huntington Disease-causing Huntingtin (Htt) exon 1, with its pure and unstable CAG repeat, to be shaped the way it is today. Specifically, we intend to screen for genetic elements affecting Htt repeat length instability in dividing and postmitotic neuronal cells. The novelty of our approach relies on the construction of a human embryonic stem (hES) cell platform that couples highly efficient CRISPR/Cas9 technology with genome-wide screenings and third generation sequencing, to test the contribution of thousands of unequivocally barcoded cis and trans modifiers on Htt exon 1 repeats instability.

In Aim 1, we will test the contribution of cis-modifiers to repeat instability during multiple mitotic divisions, by generating a hES cell platform where we will subsequently introduce a barcoded donor library of different Htt exon 1 constructs, with different CAG and flanking sequences, at the Htt locus. In Aim 2 our hES cell platform will be implemented with inducible Cas9 elements and sgRNAs libraries to perform genome-wide loss and gain of function (LOF, GOF) screenings of trans-acting modifiers of repeat sequence and size. The sgRNAs will act as barcodes for the modifier genes, allowing to test their causative role on repeat size changes. In Aim 3, we will exploit the neurogenic potential of hES cells in our LOF and GOF platforms to identify Htt exon 1 repeat modifiers in differentiating striatal neurons. Candidate modifier genes will be individually validated and tested for their functional impact on gene networks by transcriptome analysis. In all approaches, third generation sequencing and ad hoc computational pipelines will allow the simultaneous identification of the repeat changes and their association to the corresponding modifiers. Overall, this research proposal is expected to provide key molecular and genetic insights into the process of Htt repeat expansion in human

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