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<dc:title xml:lang="en">Role of the Eos and Helios transcription factors in regulatory T cell biology</dc:title>
<dcterms:alternative xml:lang="fr">Rôle des facteurs de transcription Eos et Helios dans la biologie des cellules T régulatrices</dcterms:alternative>
<dc:subject xml:lang="fr">Facteurs de transcription</dc:subject>
<dc:subject xml:lang="fr">Eos</dc:subject>
<dc:subject xml:lang="fr">Helios</dc:subject>
<dc:subject xml:lang="fr">Cellules T régulatrices</dc:subject>
<dc:subject xml:lang="fr">Treg</dc:subject>
<dc:subject xml:lang="en">Transcription factors</dc:subject>
<dc:subject xml:lang="en">Eos</dc:subject>
<dc:subject xml:lang="en">Helios</dc:subject>
<dc:subject xml:lang="en">Regulatory T cells</dc:subject>
<dc:subject xml:lang="en">Treg</dc:subject>
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<tef:elementdEntree autoriteExterne="034767681" autoriteSource="Sudoc">Facteurs de transcription</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="031751466" autoriteSource="Sudoc">Cellules suppressives</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="034043578" autoriteSource="Sudoc">Rapport CD4/CD8</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="114599688" autoriteSource="Sudoc.FMesh">Lymphocytes T régulateurs</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Les facteurs de transcription Eos et Helios ont été décrits comme étant des modulateurs des fonctions des cellules T régulatrices (Treg). Nos résultats suggèrent qu’Eos et Helios ne sont pas nécessaires, ni pour la différenciation, ni pour les principales fonctions des cellules Treg CD4+. Cependant, les cellules Helios-/- présentent une meilleure activité suppressive et à un profil transcriptomique de cellules Treg activées. Pour tester si Eos et Helios coopèrent pour réguler les fonctions des cellules Treg, nous avons analysé les souris doubles mutantes. Nos découvertes indiquent que la perte combinée d’Eos et d’Helios n’a pas d’effet sur la biologie des cellules Treg. De plus, nous avons montré qu’Eos et Helios sont induits dans les cellules Treg CD8+. Néanmoins, seule la perte d’Helios ou celle combinée d’Eos et d’Helios affectent leur différenciation. Tous ces résultats suggèrent donc qu’Eos et Helios ne sont pas requis pour réguler les fonctions essentielles des cellules Treg.</dcterms:abstract>
<dcterms:abstract xml:lang="en">The transcription factors Eos and Helios have been described as modulators of regulatory T cell (Treg) functions. Our results suggest that they are not necessary for the differentiation and essential functions of CD4+ Treg cells. However, Helios-/- cells present a superior suppressive activity and a transcriptional profile of activated Treg cells. To test if Eos and Helios can cooperate to regulate Treg cell functions, we then analyzed double null mice. Our findings indicate that loss of both Eos and Helios has no effect on Treg cell biology during homeostasis. In addition, we showed that Eos and Helios are induced in CD8+ Treg cells. However, only loss of Helios, or both Helios and Eos, affect their differentiation. Altogether, these results suggest that Eos and Helios are not required regulate essential CD4+ Treg cell functions, but the absence of Helios may have an impact on their level of activation. Finally, Helios and Eos may play role of in the CD8+ Treg cell compartment.</dcterms:abstract>
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