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Genome editing of noncoding regions to map sequence-function relationships at scale

Project description

Linking non-coding DNA variants to human disease

Approximately only 1-2 % of the human genome codes for proteins. The remainder consists of non-coding regions which play a key role in regulating how genes are expressed. Despite their obvious impact on phenotype and disease risk, we currently lack experimental evidence on the precise effect of these regions. The ERC-funded Seq2Func-NC project aims to address this gap in knowledge and study non-coding variants on a large scale. In this context, researchers will develop prime editing and novel screening methods to explore how mutations in introns and regulatory regions impact gene expression. The study will identify new disease-linked variants and build predictive models to link DNA sequence alterations to their biological effects.

Objective

Deciphering how genetic variants lead to disease can advance precision diagnostics and mechanistically informed therapies. Yet, our ability to link variants in the human genome’s vast noncoding regions to phenotypic consequences is highly limited. This stems largely from a lack of experimental evidence on individual variants’ functional effects. Here, we propose to develop and deploy a suite of new genome editing methods to generate functional data for noncoding variants at unprecedented scale.

First, we will leverage a prime editing screening platform we have recently established to systematically ask how intronic variants and 5’-untranslated region (5’UTR) variants lead to loss of function (LoF) across dozens of human disease genes. Second, we will interrogate relationships between regulatory sequence variants, transcription factor binding sites (TFBSs), and genomic contexts across diverse cell types using novel methods to link variants to effects on messenger RNA (mRNA) levels. Third, we will uncover new noncoding variants underlying disease by combining variant effect prediction with large-scale functional assessment.

Collectively, this work will establish new technologies to experimentally characterize noncoding variants, delineate sequence-function relationships from 100,000s of variant effect measurements, and substantially advance our ability to predict, identify, and engineer noncoding variants of functional importance.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

(opens in new window) ERC-2025-STG

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Host institution

THE FRANCIS CRICK INSTITUTE LIMITED
Net EU contribution
€ 1 499 511,00
Address
1 MIDLAND ROAD
NW1 1AT London
United Kingdom
Region
London Inner London — West Camden and City of London
Activity type
Research Organisations
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Total cost
€ 1 499 511,00

Beneficiaries (1)