Project description
Employing endogenous nucleases to design antibodies in B cells
The EU-funded AutoEngineering project aims to develop an innovative strategy for B cell engineering using natural DNA breaks to generate antibodies with superior reactivity profiles. The project will be based on the researchers' discovery that endogenous activation-induced cytidine deaminase activity in B cells leads to the insertion of a pathogen receptor and broadly reactive antibodies. The objectives are to gain insights into the mechanism of insertion and define biomarkers of DNA repair, optimise substrates and insert integration, and engineer B cells to produce antibodies containing viral receptor domains. Insertion of receptor domains targeting crucial sites may generate B cells with exceptional potency, paving the way for artificial immunity.
Objective
The AutoEngineering project aims to develop an innovative strategy for B cell engineering by exploiting natural DNA breaks to generate antibodies that surpass common reactivity profiles. The project is based on our surprising finding that in B cells endogenous AID (activation-induced cytidine deaminase) activity can lead to the insertion of a pathogen receptor resulting in broadly reactive antibodies. To unravel this new mechanism of diversification, my laboratory established and developed new methodologies to identify insert-containing antibodies in genomic DNA, mRNA, proteins and cells. We found that insertions in antibody transcripts derive from distant genes, occur across individuals and are inducible in vitro, and we have preliminary evidence that in vitro activation of AID enables integration of a nucleofected DNA substrate. Avoiding exogenous nucleases, this project aims at developing efficient and safe engineering of B cells to produce antibodies by design. Aim 1. By screening for genomic insertions in antibody genes of healthy donors, DNA-repair deficient patients, and manipulated in vitro B cell cultures, we will gain insights into the mechanism of insertion and define biomarkers of DNA repair. Aim 2. The knowledge gained will be used to optimize substrate design and insert integration, while minimizing the potential for off-target integration. We will also explore the possibility to guide AID to target sites using RNAs, and design substrates that allow efficient splicing of an inserted exon. Aim 3. To gain breadth on pathogen recognition and to circumvent the limitation of the heterodimeric antibody binding site, we will use the above approach to engineer B cells to produce antibodies containing receptors for HIV (CD4) and HCV (CD81). Insertion of slim receptor-domains with precise targeting of crucial sites may generate B cells with exceptional potency to reduce the risk for escape mutants, thereby paving a way for artificial immunity.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences biological sciences genetics DNA
- medical and health sciences health sciences infectious diseases RNA viruses hepatitis C
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC)
MAIN PROGRAMME
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
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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-STG - Starting Grant
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2020-STG
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13125 Berlin
Germany
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