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<dc:title xml:lang="fr">Flavones substituées : une nouvelle classe de composés pour le traitement du paludisme : optimisation vers un candidat médicament</dc:title>
<dcterms:alternative xml:lang="en">Substituted flavones : a new class of compounds to treat malaria : hit to lead optimization</dcterms:alternative>
<dc:subject xml:lang="fr">Paludisme</dc:subject>
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<dc:subject xml:lang="en">Malaria</dc:subject>
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<dcterms:abstract xml:lang="fr">Le paludisme est responsable de plus de 438 000 morts en 2015. L’apparition et la propagation de P. falciparum résistants à l’artémisinine, l’antipaludique le plus puissant, est un problème majeur en Asie du Sud-Est. Un besoin impérieux de nouveaux médicaments présentant une action rapide et conservée vis-à-vis de ces parasites résistants se fait sentir pour remplacer l’artémisinine. Cette thèse porte sur le développement d’une nouvelle série chimique inspirée d’un biflavonoïde naturel, la lanaroflavone. Le composé tête-de-série MR27770 présente des propriétés intéressantes : il agit de façon plus rapide que l’artémisinine tout au long du cycle érythrocytaire du parasite, ses propriétés pharmacocinétiques sont prometteuses et il est partiellement actif chez la souris impaludée. De plus, il ne présente pas de résistances croisées avec l’artémisinine ou les autres antipaludiques. Son mécanisme d’action n’est pas connu mais pourrait impliquer un stress osmotique. Ce composé prometteur présente néanmoins une activité moyenne in vitro ce qui a motivé l’étude topologique de sa structure et mené à des dérivés optimisés.</dcterms:abstract>
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