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RNA-based gene writing in human cells

Project description

Novel gene-editing tool

Editing the genome is crucial for understanding genetic diseases, gene function and advancing medical treatments. CRISPR, a powerful genome-editing technology, allows for precise modifications to DNA by targeting specific genes. While CRISPR has enabled significant advancements in small-scale genetic changes, making large genomic alterations remains a challenge. Traditional gene transfer methods, such as viral vectors, have safety concerns and limited versatility. The ERC-funded SCRIBE project seeks to overcome these obstacles by developing new gene-writing strategies that use RNA to encode and transfer genetic information. By combining CRISPR’s precision with retrotransposon mechanisms, SCRIBE aims to create a unified tool for efficient and versatile gene writing.

Objective

CRISPR development has enormously accelerated genetic engineering principles, and precise methods to modify small alleles (such as base or prime editing) are now available. However, generating large genomic changes still presents enormous challenges. Large modifications, such as gene transfers, are performed generally with viral vectors, which have been associated with toxicities in the clinic, and often lack versatility needed for basic science experimentation. Newer CRISPR-based techniques for gene transfer suffer from significant efficacy and safety problems when used for large message writing.

The overall goal of SCRIBE is to create new strategies for gene writing and define their molecular principles. These new writers will use RNA to both encode and transfer the message. The SCRIBE strategies will take advantage of the retrotransposon capacity for writing genes from RNA, and the precision of CRISPR in addressing specific sites of the genome. Thus, the “find” function will be dominated by CRISPR components, and “copy-paste” activity will be executed by retroelement components. To develop and optimize such a technology, we will use evolutionary analysis to select those retroelements with the highest activity and orthogonality, and modulate their message writing capacity by engineering their components. We will test various CRISPR and retrotransposon combinations, and adapt both of them to converge into a unified molecular machine. We will use artificial intelligence applied to protein design and a novel concept of synthetically oriented evolution to accelerate emergence of the new function. Finally, we will deploy new gene writing principles for RNA-based in vivo gene delivery.

In sum, we will develop a new family of tools for engineering life. The real breakthrough will be the establishment of gene writing as a simple and general method for both research advancement and applied purposes.

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Programme(s)

Topic(s)

Funding Scheme

HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

(opens in new window) ERC-2023-COG

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Host institution

UNIVERSIDAD POMPEU FABRA
Net EU contribution
€ 1 999 465,00
Address
PLACA DE LA MERCE, 10-12
08002 Barcelona
Spain
Region
Este Cataluña Barcelona
Activity type
Higher or Secondary Education Establishments
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Total cost
€ 1 999 465,00

Beneficiaries (1)