INVESTIGADORES
MONTES Carolina Lucia
congresos y reuniones científicas
Título:
PD-1+Tim-3+ T cells from 4T1 Tumor bearing mice display Features of exhaustion and increased expression of immunomodulatory molecules?
Autor/es:
CANALE F; RAMELLO MC; GOROSITO SERRAN M; ARAUJO-FURLAN C; TOSELLO BOARI J; ACOSTA RODRIGUEZ EV; GRUPPI A; MONTES CL
Lugar:
Mar del Plata
Reunión:
Congreso; LIX Reunión Científica Anual de la Sociedad Argentina de Investigación Clínica. LXII Reunión Anual de la Sociedad Argentina de Inmunologia; 2014
Institución organizadora:
SAI-SAIC
Resumen:
CHARLAS CORTAS SELECCIONADAS:
PD-1+TIM-3+ T CELLS FROM 4T1 TUMOR-BEARING MICE DISPLAY FEATURES OF EXHAUSTION
AND INCREASED EXPRESSION OF IMMUNOMODULATORY MOLECULES.
T cell exhaustion is a T cell dysfunction state that arises
during chronic infections and cancer. It is characterized by
poor effector functions and sustained expression of inhibitory
receptors (iRs) like PD-1 and TIM-3. Based on our
previous findings, we hypothesize that these apparently
dysfunctional T cells may have modulatory functions. In
this work we studied phenotype and functional characteristics
of tumor-infiltrating lymphocytes (TILs) and T cells
from tumor-draining lymph nodes (dLN) of 4T1 mammary
carcinoma bearing mice; comparing PD-1+TIM-3+ double
positive (DP) cells with PD-1-TIM-3- double negative (DN)
cells. Within DP TILs population we found higher % of cells
expressing iRs like 2B4, LAG-3 and KLRG-1 compared to
DN T cells, being 2B4 and LAG-3 more frequent in CD8+
DP T cells (p