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Las infecciones gastrointestinales agudas inducen respuestas de células T específicas de microbiota de larga vida
Timothy W Hand1, Liliane M Dos Santos, Nicolas Bouladoux
1Mucosal Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD 20892, USA.
Science (New York, N.Y.)
|August 28, 2012
Resumen
Durante una infección gastrointestinal, el sistema inmunológico pierde la tolerancia a las bacterias intestinales beneficiosas, activando las células T que forman la memoria. Esto sugiere que la inmunidad adaptativa a los comensales es crucial para la defensa de la mucosa.
Área de la Ciencia:
- Inmunología Inmunología.
- Microbiología Microbiología.
- Gastroenterología y Gastroenterología.
Sus antecedentes:
- El intestino alberga diversas bacterias comensales, cruciales para la salud.
- La interacción del sistema inmunológico con los comensales durante la infección no se entiende completamente.
- La exposición a patógenos es frecuente en el tracto gastrointestinal.
Objetivo del estudio:
- Para investigar la tolerancia del sistema inmunológico a las bacterias comensales durante una infección gastrointestinal.
- Comprender el comportamiento de las células T específicas de la microbiota durante la infección de la mucosa.
Principales métodos:
- Análisis de las respuestas de las células T en el contexto de la infección gastrointestinal.
- Caracterización fenotípica y funcional de las células T específicas de la microbiota.
Principales resultados:
- La tolerancia a las bacterias comensales se pierde durante la infección gastrointestinal.
- Las células T específicas de la microbiota se diferencian en células efectoras inflamatorias.
- Estas células T se desarrollan en células de memoria similares a las células T específicas del patógeno.
Conclusiones:
- Las respuestas inmunes a los comensales reflejan las de los patógenos durante la infección intestinal.
- La inmunidad adaptativa contra los microbios comensales es una parte clave de la inmunidad de la mucosa.
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