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Visualizing the Actin and Microtubule Cytoskeletons at the B-cell Immune Synapse Using Stimulated Emission Depletion (STED) Microscopy
Published on: April 9, 2018
Promoción de las respuestas inmunes de las células B a través de una población de células mieloides inducidas por
Michael B Jordan1, David M Mills, John Kappler
1Integrated Department of Immunology, National Jewish Medical and Research Center, University of Colorado Health Sciences Center, 1400 Jackson Street, Denver, CO 80206, USA.
Science (New York, N.Y.)
|June 19, 2004
Resumen
Una nueva población de células mielóides productoras de IL-4 es crucial para la formación de células B y la producción de anticuerpos. Estas células Gr1+, junto con la IL-4, impulsan respuestas inmunes humoral eficaces in vivo.
Área de la Ciencia:
- Inmunología Inmunología.
- Biología celular Biología celular.
Sus antecedentes:
- La iniciación de las células B, inducida por la interleucina-4 (IL-4) y/o el antígeno, es esencial para las respuestas inmunes.
- Los mecanismos in vivo y el papel crítico del primado de células B siguen siendo incompletamente entendidos.
Objetivo del estudio:
- Para investigar la inducción in vivo de las células B priming.
- Para identificar a los actores celulares involucrados en la preparación de las células B y la inmunidad humoral.
Principales métodos:
- A los ratones se les inyectó un adyuvante de alumbre.
- Se analizaron las células B del bazo y las células mieloides accesorias.
- Se evaluó el papel de las células IL-4 y Gr1+ en las respuestas de las células B.
Principales resultados:
- La inyección de aluminio indujo el primado de células B y una nueva población de células mieloides Gr1+ productoras de IL-4 en el bazo.
- Estas células Gr1+ e IL-4 fueron esenciales para el in vivo priming y la expansión de las células B específicas de antígeno.
- La producción óptima de anticuerpos dependía de estas células accesorias y de la IL-4.
Conclusiones:
- Una población de células mieloides accesorias no reconocidas anteriormente juega un papel crítico en el inicio y la amplificación de las respuestas inmunes humoral.
- Este descubrimiento arroja luz sobre la regulación in vivo de la activación de las células B y la generación de anticuerpos.
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