Development of nanoscale structure in LAT-based signaling complexes.
J Cell Sci
; 129(24): 4548-4562, 2016 12 15.
Article
en En
| MEDLINE
| ID: mdl-27875277
ABSTRACT
The adapter molecule linker for activation of T cells (LAT) plays a crucial role in forming signaling complexes induced by stimulation of the T cell receptor (TCR). These multi-molecular complexes are dynamic structures that activate highly regulated signaling pathways. Previously, we have demonstrated nanoscale structure in LAT-based complexes where the adapter SLP-76 (also known as LCP2) localizes to the periphery of LAT clusters. In this study, we show that initially LAT and SLP-76 are randomly dispersed throughout the clusters that form upon TCR engagement. The segregation of LAT and SLP-76 develops near the end of the spreading process. The local concentration of LAT also increases at the same time. Both changes require TCR activation and an intact actin cytoskeleton. These results demonstrate that the nanoscale organization of LAT-based signaling complexes is dynamic and indicates that different kinds of LAT-based complexes appear at different times during T cell activation.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Fosfoproteínas
/
Transducción de Señal
/
Proteínas Adaptadoras Transductoras de Señales
/
Nanoestructuras
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Proteínas de la Membrana
Límite:
Humans
Idioma:
En
Año:
2016
Tipo del documento:
Article