A novel monoclonal antibody (PIIO-1) to be used in combination with immune-checkpoint blockers. PIIO-1 augments CD8+ T cells-induced anti-tumor immunity and overcomes ICB resistance by disrupting transforming growth factor-β (TGF-β), the center of a pathway significantly implicated in solid tumors and hematological malignancies. PIIO-1 inhibits TGFβ locally via a docking receptor, avoiding adverse and unforeseen side effects.
Although immune checkpoint blockade (ICB) has emerged as a promising cancer immunotherapy, a majority of tumors fail to respond to ICB. A potential mechanism driving this failed response is the accumulation of TGF-β1 in the tumor microenvironment (TME), which drives immune dysfunction by indu…