Objective
Gene therapies are a fast becoming a realistic treatment for patients suffering from genetic disorders. To date, systemically applied in
vivo gene therapies exclusively rely on adeno-associated viral (AAV) vectors for gene delivery to affected cells. AAV vectors have many
features that make them successful gene delivery tools and through biomining and bioengineering efforts over the years, AAV
variants are able to transduce a number of clinically relevant targets. However, many cell types, including human muscle cells, are not
sufficiently transduced by existing viral vectors. Another challenge is the small genome size of AAV vectors, which is frequently a
problem for neuromuscular disorders where affected genes are larger than in other types of disorders. In the light of these challenges,
we are proposing to tackle new avenues for viral vector engineering in two separate, but related, objectives. Objective one is a new
way of viral vector re-targeting through incorporation of single domain antibodies (nanobodies) followed by a directed evolution
affinity maturation step. This approach of adds value to an already published method and should create a capsid-nanobody fusion
that is fit for purpose and potentially also has benefits regarding the evasion of pre-existing antibodies and improved packaging. The
second and more ambitious objective of our proposal consists of the adoption of a novel bacteriophage-based viral vector capable of
transducing mammalian cells and delivering up to 171 kilo base pairs of DNA. We are proposing to couple this new vector system
with our experience in capsid bioengineering and gene therapy, which has not been done before. For this objective, we propose to
incorporate antibody-derived targeting molecules such as nanobodies and single-chain variable fragments to highly protruding fibre
proteins on the bacteriophage surface and create cell type-specific viral vectors capable of delivering large genes, i.e. human
dystrophin.
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: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
- natural sciencesbiological sciencesgeneticsDNA
- natural sciencesbiological sciencesbiochemistrybiomoleculesproteins
- natural sciencesbiological sciencesgeneticsgenomes
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Keywords
Programme(s)
- HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA) Main Programme
Funding Scheme
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European FellowshipsCoordinator
75654 Paris
France