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<dc:title xml:lang="fr">Développement d’une approche vaccinale antitumorale basée sur la délivrance d’ARN messager</dc:title>
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<tef:elementdEntree autoriteExterne="270447261" autoriteSource="Sudoc">Vaccins à ARN messager</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">L’immunothérapie a récemment pris une place centrale dans le traitement du cancer. Les vaccins antitumoraux s’y distinguent comme l’une des approches les plus ciblées. Récemment, l’ARN messager (ARNm) s’est distingué comme une plateforme vaccinale prometteuse notamment grâce au développement de nanoparticules lipidiques (LNP) capables de l’encapsuler. Cependant, ces dernières peuvent induire l’apparition d’anticorps anti-LNP. Ainsi, notre but était le développement de nouveaux vecteurs pour la délivrance de vaccins ARNm à base de « cell-penetrating peptides » (CPP), de courtes séquences peptidiques capables de traverser les membranes cellulaires pour y délivrer des molécules thérapeutiques. Ces travaux ont permis l’identification de CPP dérivés des séquences du peptide antimicrobien LAH4, de la protéine virale Vpr et de l’hémagglutinine comme potentiels vecteurs pour la délivrance d’ARNm aux cellules dendritiques. Les CPP que nous avons développés pourraient représenter une alternative viable et efficace pour la vectorisation de l’ARNm, ouvrant de nouvelles perspectives dans le domaine des vaccins antitumoraux.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Immunotherapy has recently taken on a central role in cancer treatment. Antitumor vaccines stand out as one of the most targeted approaches. Recently, messenger RNA (mRNA) has emerged as a promising vaccine platform, thanks in particular to the development of lipid nanoparticles (LNPs) capable of encapsulating it. However, the latter can induce the appearance of anti-LNP antibodies. Our aim was therefore to develop new vectors for the delivery of mRNA vaccines based on cell-penetrating peptides (CPPs), short peptide sequences capable of crossing cell membranes to deliver therapeutic molecules. This work has led to the identification of CPPs derived from sequences of the antimicrobial peptide LAH4, the viral protein Vpr and hemagglutinin as potential vectors for mRNA delivery to dendritic cells.The CPPs we have developed could represent a viable and efficient alternative for mRNA vectorization, opening up new prospects in the field of antitumor vaccines.</dcterms:abstract>
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