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Targeting auto-reactive B-cells by vaccination to cure human auto-immune disease

Project description

Long-lasting specific depletion of autoreactive B-cells to cure autoimmune diseases

Most incurable human autoimmune diseases are chronic conditions characterised by the presence of autoantibodies. Elimination of the autoreactive B-cells are not presently feasible due to a lack of specific markers. The EU-funded Target to B-cure project aims to develop a vaccine that will allow specific long-lasting depletion of autoreactive B-cells. Using autoimmune rheumatoid arthritis (RA) as a model, it will study the RA-specific autoimmune response. Researchers will identify autoreactive B-cells and the B-cell receptor (BCR) repertoire at several stages of the disease to determine the potency of the non-germline-encoded mutations in BCRs as antigens amenable to T-cell recognition and vaccination. Finally, the project will design patient-tailored vaccines and perform a phase I trial to determine the feasibility of depleting disease-causing B-cells.

Objective

Currently, most human autoimmune diseases are chronic conditions without a prospect of cure. My aim in this proposal is to meet the next major challenge, achieving cure in autoimmune disease.

Many autoimmune diseases are characterized by autoantibodies and are remarkably responsive to B-cell targeted therapies, demonstrating that the autoreactive B-cell is central to disease pathogenesis. Nonetheless, the selective and permanent elimination of the autoreactive B-cell, both memory and plasma cells alike, is not presently feasible due to a lack of specific markers and treatments. My aim is to develop a vaccine that will allow the specific and long-lasting depletion of autoreactive B-cells, thereby inducing cure. Using the unique mutated sequences of autoreactive B-cell receptors (BCR), cytotoxic T-cells that specifically eradicate autoreactive B-cells will be induced. This concept extends the remit of vaccines beyond infectious diseases and cancer, into the sphere of autoimmune disease.

Using the well-defined autoimmune disease rheumatoid arthritis (RA) as prototype, I will study the RA-specific autoimmune response. Our recent findings show that RA is characterized by a restricted, oligoclonally-expanded autoreactive B-cell pool. Using recently developed technologies, my team will identify autoreactive B-cells and the BCR repertoire at several (pre)disease stages. We will then determine the potency of the many non-germline-encoded mutations in BCRs as neoantigens amenable to T-cell recognition and vaccination. Incorporating these neoantigens into multiple long peptides covering the autoreactive B-cell repertoire, we will design patient-tailored vaccines and perform a phase I trial to determine the feasibility of specifically depleting disease-causing B-cells.

This research will create the possibility for patient-tailored vaccines that can permanently eradicate auto-reactive B-cells in B-cell driven auto-immune diseases; diseases that are still incurable to date.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

ERC-ADG - Advanced Grant

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Call for proposal

(opens in new window) ERC-2019-ADG

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Host institution

ACADEMISCH ZIEKENHUIS LEIDEN
Net EU contribution
€ 2 500 000,00
Address
ALBINUSDREEF 2
2333 ZA Leiden
Netherlands
Activity type
Higher or Secondary Education Establishments
Links
Total cost
€ 2 500 000,00

Beneficiaries (1)