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<dc:title xml:lang="fr">Dérivés basés sur les bispidines pour la complexation de métaux et une application en médecine nucléaire</dc:title>
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<dc:subject xml:lang="fr">Bispidines</dc:subject>
<dc:subject xml:lang="fr">Terbium</dc:subject>
<dc:subject xml:lang="fr">Scandium</dc:subject>
<dc:subject xml:lang="fr">TEP</dc:subject>
<dc:subject xml:lang="fr">Radiothérapie</dc:subject>
<dc:subject xml:lang="fr">Picolinate</dc:subject>
<dc:subject xml:lang="fr">Pyridine phosphonate</dc:subject>
<dc:subject xml:lang="fr">Hydroxamate</dc:subject>
<dc:subject xml:lang="en">Bispidines</dc:subject>
<dc:subject xml:lang="en">Terbium</dc:subject>
<dc:subject xml:lang="en">Scandium</dc:subject>
<dc:subject xml:lang="en">PET</dc:subject>
<dc:subject xml:lang="en">Radiotherapy</dc:subject>
<dc:subject xml:lang="en">Picolinate</dc:subject>
<dc:subject xml:lang="en">Pyridine phosphonate</dc:subject>
<dc:subject xml:lang="en">Hydroxamate</dc:subject>
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<tef:elementdEntree autoriteExterne="032119607" autoriteSource="Sudoc">Tomographie par émission</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="027357007" autoriteSource="Sudoc">Radiothérapie</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">L'émergence de nouveaux radioisotopes comme le terbium (149Tb, 152Tb, 155Tb, 161Tb) et le scandium (43Sc, 44Sc, 47Sc) suscite un intérêt croissant pour les sondes théranostiques en imagerie TEP et radiothérapie. L’optimisation de la sélectivité des radioconjugués implique l’utilisation d’anticorps et de chélateurs bifonctionnels capables de complexer ces isotopes dans des conditions douces tout en assurant la stabilité in vivo. Cependant, concilier cinétique de complexation et inertie cinétique reste un défi. Ce travail vise à développer de nouveaux ligands dérivés des bispidines, reconnus pour leurs complexes stables. Trois ligands ont été synthétisés : picolinate (L1), pyridine phosphonate (L2) et hydroxamate (L4). Leurs complexes avec le Tb(III) et le Sc(III) ont été étudiés, notamment les propriétés structurales, thermodynamiques et optiques. Des essais de complexation du Sc(III) et de son isotope 44Sc ont aussi été réalisés, ainsi que des recherches sur d'autres ligands potentiels.</dcterms:abstract>
<dcterms:abstract xml:lang="en">The emergence of new radioisotopes such as terbium (149Tb, 152Tb, 155Tb, 161Tb) and scandium (43Sc, 44Sc, 47Sc) has sparked growing interest in theranostic probes for PET imaging and radiotherapy. Enhancing radioconjugate selectivity often involves antibody-based targeting, requiring bifunctional chelators capable of complexing these metallic isotopes under mild conditions while ensuring in vivo stability. However, optimizing complexation kinetics can compromise kinetic inertness. This work aims to synthesize new bispidine-derived ligands, known for forming highly stable complexes. Three ligands were developed: picolinate (L1), pyridine phosphonate (L2), and hydroxamate (L4), to study their complexes with Tb(III) and Sc(III). The structural, thermodynamic, kinetic, and optical properties of L1 and L2 complexes with Tb(III) were examined. Similar studies were conducted with L1 for Sc(III) and its isotope 44Sc. Ligand L4 synthesis attempts and complexation trials were also explored.</dcterms:abstract>
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