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In Vivo Augmentation of Gut-Homing Regulatory T Cell Induction
Published on: January 22, 2020
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La residencia expandible descentraliza la homeostasis inmune
Sathi Wijeyesinghe1, Lalit K Beura1,2, Mark J Pierson1
1Center for Immunology, Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN, USA.
Nature
|March 18, 2021
Resumen
El sistema inmunológico
Área de la Ciencia:
- Inmunología
- Biología celular
- Homeostasis de los tejidos
Sus antecedentes:
- El sistema inmunológico adulto se origina en el centro pero se distribuye por todo el cuerpo.
- Las células inmunes controlan el entorno, mantienen la salud de los tejidos y se defienden contra los patógenos.
- Comprender la integración de las células inmunes dentro de los tejidos es crucial para la defensa del organismo.
Objetivo del estudio:
- Investigar cómo se integra la inmunidad dentro de los tejidos de ratones adultos.
- Explorar la durabilidad, la expansibilidad y la contribución de las células inmunes a la celularidad de los órganos.
- Examinar el papel de la residencia de los tejidos y la flexibilidad de los órganos en la homeostasis del sistema inmunológico.
Principales métodos:
- Seguimiento de la inmunidad de células T antivirales en ratones.
- Utilizando modelos de ratones parabióticos para estudiar las células inmunes residentes en el tejido frente a las sanguíneas.
- Evaluación de la acreción de células inmunes después de vacunas en serie o co-alojamiento.
Principales resultados:
- Las células T de memoria residente se mantienen de forma duradera (hasta 450 días) en los tejidos.
- La flexibilidad del tejido permite la acumulación de nuevas células de memoria residentes sin perder la inmunidad existente.
- Muchos glóbulos blancos adoptan programas de residencia de tejidos, con órganos que actúan como depósitos flexibles para la expansión de las células inmunes.
Conclusiones:
- La residencia de los tejidos y la flexibilidad de los órganos son fundamentales para la homeostasis inmune innata y adaptativa.
- El sistema inmunológico se expande a lo largo de la vida, con órganos no linfáticos que apoyan la inmunidad duradera y autónoma de los tejidos.
- La vigilancia inmune en los órganos no linfoides se caracteriza por la residencia, no solo por la renovación o la recirculación.
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