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<dc:title xml:lang="en">The functional and spatial organization of chromatin during Thymocyte development</dc:title>
<dcterms:alternative xml:lang="fr">L’organisation fonctionnelle et spatiale de la chromatine pendant le développement des lymphocytes T</dcterms:alternative>
<dc:subject xml:lang="fr">3D architecture de génome</dc:subject>
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<dc:subject xml:lang="fr">Développement des lymphocytes T</dc:subject>
<dc:subject xml:lang="fr">Facteur de transcription</dc:subject>
<dc:subject xml:lang="fr">Enhancers</dc:subject>
<dc:subject xml:lang="fr">Transcription</dc:subject>
<dc:subject xml:lang="fr">Épigénétique</dc:subject>
<dc:subject xml:lang="fr">Boucles chromatiniennes</dc:subject>
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<dc:subject xml:lang="en">3D genome architecture</dc:subject>
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<dc:subject xml:lang="en">Thymocyte differentiation</dc:subject>
<dc:subject xml:lang="en">Transcription factors</dc:subject>
<dc:subject xml:lang="en">Enhancers</dc:subject>
<dc:subject xml:lang="en">Transcription</dc:subject>
<dc:subject xml:lang="en">Epigenetic</dc:subject>
<dc:subject xml:lang="en">Chromatin loops</dc:subject>
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<dcterms:abstract xml:lang="fr">Malgré les vastes études démontrant le rôle de la conformation génomique dans le contrôle transcriptionnel, de nombreuses questions restent en suspens, et en particulier, comment ces structures chromatiniennes sont formées et maintenues. Pour mieux comprendre les liens entre l’état de la chromatine au niveau des éléments régulateurs, la topologie de la chromatine et la régulation de la transcription, nous utilisons la technique CHi-C basée sur la technologie de capture de la conformation chromosomique (3C). En utilisant deux stratégies de capture ciblant deux différentes structure chromatiniennes (les boucles chromatiniennes et les domaines topologiques), nous avons pu décrypter la structure chromatinienne associée à la différenciation des thymocytes et mettre en évidence des mécanismes de contrôle transcriptionnel de certains gènes. Les expériences futures de l’équipe vont consister à examiner les facteurs (hors transcription) qui peuvent influencer l'architecture de la chromatine, comme la liaison différentielle des CTCF, et comment ces facteurs peuvent être coordonnés par le contrôle de transcription.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Chromosome folding takes place at different hierarchical levels, with various topologies correlated with control of gene expression. Despite the large number of recent studies describing chromatin topologies and their correlations with gene activity, many questions remain, in particular how these topologies are formed and maintained. To understand better the link between epigenetic marks, chromatin topology and transcriptional control, we use CHi-C technique based on the chromosome conformation capture (3C) method. By using two capture strategies targeting two different chromatin structures (chromatin loops and topological domains), we have been able to decipher the chromatin structure associated with thymocyte differentiation and to highlight mechanisms for the transcriptional control of certain genes. Future experiments of the lab will examine mechanisms other than transcription which may influence chromatin architecture, such as differential binding of CTCF, and how these may interplay with transcriptional control and chromatin architecture.</dcterms:abstract>
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