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Evolutionary genomics: new perspectives and novel medical applications

Project description

Evolutionary genomics for improved medicine

Insight into the mechanism of genome evolution over time is of fundamental importance for understanding the genetic basis of diseases and the complex interplay between genes, as well as for improving gene-based therapies. How does the genome mitigate errors that emerge during DNA replication? Are there silent sites where errors do not pose an impact? Funded by the European Research Council, the EvoGenMed project aims to explore how errors can lead to evolutionary changes and novel traits, and how strong this selection is. By analysing mutations and gene networks, the researcher aims to develop better diagnostic tools, identify disease-causing mutations, and find safe sites for therapeutic gene insertion.

Objective

To make for better diagnostics and safer applications of genomics we need a better understanding of our genome and how it functions. Until recently we thought we knew: intergenic sequence must be largely “junk” and mutations that, for example, affect genes but not the protein (synonymous mutations) must be effectively neutral. This degenerate genome view accords with the nearly-neutral theory’s prediction that selection will be weaker when populations are small. But is this all there is to it? I shall investigate two new interrelated perspectives on genome evolution. First, I suggest that to mitigate errors, owing to our high error rates, our genome can be under stronger, not weaker, selection. Second, that errors might be a source of evolutionary novelty. Error mitigation, my team has shown, often involves selection on seemingly innocuous mutations such as synonymous changes. Remarkably, we discovered that selection to ensure error-proof splicing is possibly more prevalent on synonymous mutations when populations are small, making seemingly innocuous mutations stronger candidates for human diseases. I shall provide the first test of the new error-proofing perspective through comparative genomic analysis on synonymous site evolution. To investigate error as a source of novelty I shall consider whether expression piggy-backing (expression of a gene affecting its neighbors) forces rewiring of gene networks. Importantly, I shall translate our new understanding to enable better diagnostics and improved therapeutics. I shall develop a much-needed computer package to identify candidate disease-causing synonymous changes. In addition, knowing how synonymous sites modulate splicing will allow me to design better intronless transgenes. Transgenes must also be inserted in genomic regions immune to piggy-backing. I will examine transposable element related piggy-backing to characterize “safe” sites for therapeutic gene insertion and mammalian transgenesis more generally.

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Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

ERC-ADG - Advanced Grant

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Call for proposal

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(opens in new window) ERC-2014-ADG

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Host institution

UNIVERSITY OF BATH
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 2 260 496,00
Address
CLAVERTON DOWN
BA2 7AY BATH
United Kingdom

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Region
South West (England) Gloucestershire, Wiltshire and Bristol/Bath area Bath and North East Somerset, North Somerset and South Gloucestershire
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 2 260 496,00

Beneficiaries (3)

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