| Přispěvatelé: |
Esposito, Federica, Lyubenova, Hristiana, Tornabene, Patrizia, Auricchio, Stefano, Iuliano, Antonella, Nusco, Edoardo, Merlin, Simone, Olgasi, Cristina, Manni, Giorgia, Gargaro, Marco, Fallarino, Francesca, Follenzi, Antonia, Auricchio, Alberto |
| Popis: |
Liver gene therapy with adeno-associated viral (AAV) vectors is under clinical investigation for haemophilia A (HemA), the most common inherited X-linked bleeding disorder. Major limitations are the large size of the F8 transgene, which makes packaging in a single AAV vector a challenge, as well as the development of circulating anti-F8 antibodies which neutralise F8 activity. Taking advantage of split-intein-mediated protein trans-splicing, we divided the coding sequence of the large and highly secreted F8-N6 variant in two separate AAV-intein vectors whose co-administration to HemA mice results in the expression of therapeutic levels of F8 over time. This occurred without eliciting circulating anti-F8 antibodies unlike animals treated with the single oversized AAV-F8 vector under clinical development. Therefore, liver gene therapy with AAV-F8-N6 intein should be considered as a potential therapeutic strategy for HemA. |
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