BREAST CANCER SHAPES THE B CELL COMPARTMENT TOWARDS IMMATURE DEVELOPMENTAL STAGES

NICOLÁS SARBIA; VERÓNICA C. MARTÍNEZ ALLO; MONTANA N. MANSELLE COCCO; SABRINA GATTO; ROSA M. MORALES; TOMÁS D´ALOTTO-MORENO; GABRIEL A. RABINOVICH; MARIANA SALATINO; MARTA A. TOSCANO

Ciudad de Buenos Aires

Congreso; Reunión Conjunta de Sociedades de Biociencias; 2017

Sociedad Argentina de Inmunología

Unlike T cells, that have been broadly studied in anti-tumor immunity,the role of B cells in cancer progression remains a matter of controversy. Using different murine tumor models (4T1, LM3 and CT26) we sought to understand how the B cell compartment is phenotypically and functionally shaped by the presence of tumors, altering the host?s immune response. For this, we analyzed B cell ontogeny by determining the frequency and number of B cell subsets in the bone marrow and spleen of tumor-free and tumor-bearing mice. We found that mice with 4T1 and LM3 mammary tumors had a dramatic reduction in the number of bone marrow B cells B220+ CD19+ (p