Mast cell lineage diversion of T lineage precursors by the essential T cell transcription factor GATA-3.
Nat Immunol
; 8(8): 845-55, 2007 Aug.
Article
en En
| MEDLINE
| ID: mdl-17603486
ABSTRACT
GATA-3 is essential for T cell development from the earliest stages. However, abundant GATA-3 can drive T lineage precursors to a non-T cell fate, depending on Notch signaling and developmental stage. Here, overexpression of GATA-3 blocked the survival of pro-T cells when Notch-Delta signals were present but enhanced viability in their absence. In fetal thymocytes at the double-negative 1 (DN1) stage and DN2 stage but not those at the DN3 stage, overexpression of GATA-3 rapidly induced respecification to the mast cell lineage with high frequency by direct transcriptional 'reprogramming'. Normal DN2 thymocytes also showed mast cell potential when interleukin 3 and stem cell factor were added in the absence of Notch signaling. Our results suggest a close relationship between the pro-T cell and mast cell programs and a previously unknown function for Notch in T lineage fidelity.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Linfocitos T
/
Diferenciación Celular
/
Linaje de la Célula
/
Factor de Transcripción GATA3
/
Mastocitos
Límite:
Animals
Idioma:
En
Revista:
Nat Immunol
Asunto de la revista:
ALERGIA E IMUNOLOGIA
Año:
2007
Tipo del documento:
Article
País de afiliación:
Bélgica