Haidong Dong

TL;DR: It is reported here that, except for cells of the macrophage lineage, normal human tissues do not express B7-H1 and the findings have implications for the design of T cell–based cancer immunotherapy.

TL;DR: A previously unknown co-stimulatory molecule that may be involved in the negative regulation of cell-mediated immune responses is defined.

TL;DR: It is reported that metastatic melanomas release extracellular vesicles, mostly in the form of exosomes, that carry PD-L1 on their surface, suggesting a mechanism by which tumours could evade the immunesystem, and the potential application ofExosomal PD- L1 to monitor patient responses to checkpoint therapies.

TL;DR: It is shown that a fraction of blood monocyte-derived myeloid dendritic cells (MDCs) express B7-H1, a member of the B7 family, on the cell surface, which could be further upregulated by tumor environmental factors.

TL;DR: It is reported here that constitutive or inducible expression of B7-H1, a B7 family molecule widely expressed by cancers, confers resistance to therapeutic anti-CD137 antibody in mice with established tumors and implicate new approaches for immunotherapy of human cancers.