© GEORGE RETSECK

TAMPING DOWN TREGS

Tumors (purple cells) recruit abnormally high numbers of potently immune-suppressing Tregs, which repress effector T cells (1) and prevent cancer destruction. Addition of anti-TNFR2 monoclonal antibodies (2) targets and kills TNFR2-expressing Tregs, thereby boosting the activity of effector T cells, which attack the tumor (3). The antibodies can also directly kill tumor cells that express the TNFR2 receptor.

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