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<dc:title xml:lang="en">Study of histone variants and chromatin dynamics in the preimplantation mouse embryo</dc:title>
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<dcterms:abstract xml:lang="fr">Comment le zygote acquiert la totipotence à partir de deux cellules complètement différenciées, et comment les décisions du destin cellulaire sont faites plus tard dans le développement sont des questions biologiques essentielles. Les études menées au cours de la première partie de mon doctorat ont contribué à l'annotation de la composition de la chromatine embryonnaire en ce qui concerne les variantes des histones et des modifications post-traductionnelles. L'expression ectopique de H2A.Z après la fécondation réduit la progression du développement, ce qui suggère que l'absence de H2A.Z au début du développement pourrait être importante pour l'organisation de la chromatine embryonnaire nouvellement formée. Deuxièmement, j'ai étudié la dynamique des histones dans l'embryon de souris en développement. La reprogrammation épigénétique après la fécondation est accompagnée par une étonnante forte mobilité des histones dans le noyau. Ma thèse a contribué à la compréhension des événements dynamiques affectant la chromatine embryonnaire pendant le remodelage épigénétique après la fécondation.</dcterms:abstract>
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