TRAIL-R2-specific antibodies and recombinant TRAIL can synergise to kill cancer cells.

ABSTRACT: Tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) induces apoptosis in cancer cells while sparing normal tissues. Despite promising preclinical results, few patients responded to treatment with recombinant TRAIL (Apo2L/Dulanermin) or TRAIL-R2-specific antibodies, such as conatumumab (AMG655). It is unknown whether this was due to intrinsic TRAIL resistance within primary human cancers or insufficient agonistic activity of the TRAIL-receptor (TRAIL-R)-targeting drugs. Fcγ receptors (FcγR)-mediated crosslinking increases the cancer-cell-killing activity of TRAIL-R2-specific antibodies in vivo. We tested this phenomenon using FcγR-expressing immune cells from patients with ovarian cancer. However, even in the presence of high numbers of FcγR-expressing immune cells, as found in

SUBMITTER: Tuthill MH 

PROVIDER: S-EPMC4240732 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature