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<dc:title xml:lang="en">Development of immunocompetent 3D in vitro models of the human nasal mucosa</dc:title>
<dcterms:alternative xml:lang="fr">Développement de modèles tridimensionnels in vitro immunocompétents de la muqueuse nasale humaine</dcterms:alternative>
<dc:subject xml:lang="fr">Muqueuse respiratoire</dc:subject>
<dc:subject xml:lang="fr">Muqueuse olfactive</dc:subject>
<dc:subject xml:lang="fr">Modèle 3D in vitro</dc:subject>
<dc:subject xml:lang="fr">Interface air-liquide</dc:subject>
<dc:subject xml:lang="fr">Lame propre</dc:subject>
<dc:subject xml:lang="fr">Macrophages</dc:subject>
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<dc:subject xml:lang="en">Respiratory mucosa</dc:subject>
<dc:subject xml:lang="en">Olfactory mucosa</dc:subject>
<dc:subject xml:lang="en">3D in vitro model</dc:subject>
<dc:subject xml:lang="en">Air-liquid interface</dc:subject>
<dc:subject xml:lang="en">Lamina propria</dc:subject>
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<tef:elementdEntree autoriteExterne="032375751" autoriteSource="Sudoc">Région olfactive de la muqueuse du nez</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">La muqueuse nasale humaine, principal site d’entrée des virus respiratoires, comprend un épithélium respiratoire et un épithélium olfactif reposant sur une lame propre riche en fibroblastes et macrophages. Les modèles existants ne reproduisent pas pleinement cette complexité. Dans ce contexte, ce travail visait à développer des modèles tridimensionnels in vitro de la muqueuse nasale respiratoire et olfactive. Pour la muqueuse respiratoire, des cellules épithéliales et des cellules souches nasales ont été isolées et amplifiées, et des fibroblastes et macrophages ont été intégrés dans des échafaudages collagène-chitosane. Le modèle nasal reproduit fidèlement la morphologie tissulaire et répond à l’infection par le virus influenza A, induisant cytokines et gènes liés aux interférons de type I et III. Pour la muqueuse olfactive, seuls des neurones sensoriels olfactifs, principaux composants épithéliaux, ont été obtenus à partir de cellules pluripotentes induites, la génération des autres types cellulaires nécessaires pour établir un modèle 3D complet restant à réaliser.</dcterms:abstract>
<dcterms:abstract xml:lang="en">The human nasal mucosa, a primary entry site for respiratory viruses, consists of both respiratory and olfactory epithelia overlying a lamina propria rich in fibroblasts and macrophages. Current models fail to fully capture this complexity. In this study, we developed three-dimensional in vitro models of the respiratory and olfactory nasal mucosa. For the respiratory mucosa, epithelial and nasal stem cells were isolated, expanded, and combined with fibroblasts and macrophages within collagen–chitosan scaffolds. The resulting model reproduces tissue architecture and responds to influenza A infection by inducing cytokines and type I/III interferon-related genes. For the olfactory mucosa, only olfactory sensory neurons, the main epithelial component, were successfully generated from induced pluripotent stem cells, with additional cell types required to establish a full 3D model still to be developed.</dcterms:abstract>
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