Attenuated IL-2R signaling in CD4 memory T cells of T1D subjects is intrinsic and dependent on activation state.
Clin Immunol
; 181: 67-74, 2017 08.
Article
en En
| MEDLINE
| ID: mdl-28645874
ABSTRACT
The IL-2/IL-2R pathway is implicated in type 1 diabetes (T1D). While its role in regulatory T cell (Treg) biology is well characterized, mechanisms that influence IL-2 responses in effector T cells (Teff) are less well understood. We compared IL-2 responses in 95 healthy control and 98 T1D subjects. In T1D, low IL-2 responsiveness was most pronounced in memory Teff. Unlike Treg, CD25 expression did not influence the Teff responses. Reduced IL-2 responses in memory Teff were not rescued by resting, remained lower after activation and proliferation, and were absent in type 2 diabetes. Comparing basal IL-2 responses in resting versus activated cells, memory Teff displayed lower, but more sustained, responses to IL-2 overtime. These results suggest that T1D-associated defects in the Teff compartment are due to intrinsic factors related to activation. Evaluation of both Teff and Treg IL-2R signaling defects in T1D subjects may inform selection of therapies.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Linfocitos T CD4-Positivos
/
Receptores de Interleucina-2
/
Subgrupos de Linfocitos T
/
Interleucina-2
/
Diabetes Mellitus Tipo 1
Tipo de estudio:
Observational_studies
/
Risk_factors_studies
Límite:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Clin Immunol
Asunto de la revista:
ALERGIA E IMUNOLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
Estados Unidos