Notch1 deficiency alters the migratory behavior of developing T cells and calcium signaling in the thymus of medaka.
Eur J Immunol
; 52(2): 261-269, 2022 02.
Article
en En
| MEDLINE
| ID: mdl-34731490
ABSTRACT
The differentiation of T cells from lymphoid progenitors in the thymus follows sequential developmental stages that constantly require interaction with thymic epithelial cells. Several distinct aspects of early T cell development depend on the activation of Notch receptors on thymocytes, while the selection of thymocytes at later stages are believed to be Notch independent. Using reverse genetic approaches and whole-thymus live imaging in an in vivo teleost model, the medaka, we report that Notch1 signals is required for proliferation and specification of developing T cells as well as involved in their selection in the thymus. We reveal that Notch1 controls the migratory behavior of thymocytes through controlling the chemokine receptor Ccr9b and thereby influence the T cell receptor (TCR) activation. Hence, we propose that, in lower vertebrates, the function of Notch signaling extends to all stages of T cell development, except when thymocytes undergo TCRß rearrangement.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Timo
/
Oryzias
/
Linfocitos T
/
Transducción de Señal
/
Movimiento Celular
/
Proteínas de Peces
/
Receptor Notch1
Límite:
Animals
Idioma:
En
Revista:
Eur J Immunol
Año:
2022
Tipo del documento:
Article
País de afiliación:
Alemania