Impacto del papel de HIF-1α en las ILC3s durante el desarrollo de la colitis inducida por C. rodentium
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2025
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09/12/2024
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Universidad Complutense de Madrid
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Las células linfoides innatas (ILCs) pertenecen a un subconjunto de células inmunitarias residentes en los tejidos que carecen de los receptores de antígenos que se encuentran en las células de las células T y B (TCR y BCR respectivamente) del sistema inmunitario adaptativo. Actualmente las ILCs se clasifican en 5 subgrupos y están ampliamente distribuidas por todo el organismo, aunque son especialmente comunes en las mucosas y en los órganos en contacto con el medio exterior. Esto es lo que les permite responder rápidamente a las perturbaciones tisulares (infecciones o heridas) además de regular las enfermedades inflamatorias. Entre ellas se encuentran las células linfoides innatas de tipo 3 (ILC3s), que expresan el receptor nuclear gamma huérfano relacionado con RAR (RORγt), necesario para su desarrollo y función. La función de las ILC3 es fundamental en las mucosas, especialmente en el intestino, ya que secretan las citoquinas IL-22 e IL-17 además de interactuar con otras células inmunitarias y no inmunitarias. Dado que las ILC3s son una de las primeras líneas de defensa contra las infecciones extracelulares en el desarrollo de esta tesis se decidió usar el patógeno Citrobacter rodentium (C. rodentium) como modelo de infección entérica para estudiar la regulación molecular de las ILC3s..
Innate lymphoid cells (ILCs) belong to a subset of tissue-resident immune cells that lack the antigen receptors found on T and B cells (TCR and BCR, respectively) of the adaptive immune system. ILCs are currently classified into 5 subgroups and are widely distributed throughout the body, although they are especially common in the mucosa and organs in contact with the external environment. This is what enables them to respond rapidly to tissue perturbations (infections or wounds) in addition to regulating inflammatory diseases. These include type 3 innate lymphoid cells (ILC3s), which express the nuclear receptor RAR-related orphan receptor gamma (RORγt), necessary for their development and function. The function of ILC3s is critical in the mucosa, especially in the intestine, as they secrete the cytokines IL-22 and IL-17 and interact with other immune and non-immune cells. Since ILC3s are one of the first lines of defense against extracellular infections, in the development of this thesis, it was decided to use the pathogen Citrobacter rodentium (C.rodentium) as a model of enteric infection to study the molecular regulation of ILC3s...
Innate lymphoid cells (ILCs) belong to a subset of tissue-resident immune cells that lack the antigen receptors found on T and B cells (TCR and BCR, respectively) of the adaptive immune system. ILCs are currently classified into 5 subgroups and are widely distributed throughout the body, although they are especially common in the mucosa and organs in contact with the external environment. This is what enables them to respond rapidly to tissue perturbations (infections or wounds) in addition to regulating inflammatory diseases. These include type 3 innate lymphoid cells (ILC3s), which express the nuclear receptor RAR-related orphan receptor gamma (RORγt), necessary for their development and function. The function of ILC3s is critical in the mucosa, especially in the intestine, as they secrete the cytokines IL-22 and IL-17 and interact with other immune and non-immune cells. Since ILC3s are one of the first lines of defense against extracellular infections, in the development of this thesis, it was decided to use the pathogen Citrobacter rodentium (C.rodentium) as a model of enteric infection to study the molecular regulation of ILC3s...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Medicina, leída el 09-12-2024