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Designed tumor necrosis factor-related apoptosis-inducing ligand variants initiating apoptosis exclusively via the DR5 receptor.

ABSTRACT: Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a potential anticancer drug that selectively induces apoptosis in a variety of cancer cells by interacting with death receptors DR4 and DR5. TRAIL can also bind to decoy receptors (DcR1, DcR2, and osteoprotegerin receptor) that cannot induce apoptosis. The occurrence of DR5-responsive tumor cells indicates that a DR5 receptor-specific TRAIL variant will permit tumor-selective therapies. By using the automatic design algorithm FOLD-X, we successfully generated DR5-selective TRAIL variants. These variants do not induce apoptosis in DR4-responsive cell lines but show a large increase in biological activity in DR5-responsive cancer cell lines. Even wild-type TRAIL-insensitive ovarian cancer cell lines could be brought into apoptosis. In addition, our results demonstrate that there is no requirement for antibody-mediated cross-linking or membrane-bound TRAIL to induce apoptosis through DR5.

SUBMITTER: van der Sloot AM 

PROVIDER: S-EPMC1482632 | biostudies-literature | 2006 Jun

REPOSITORIES: biostudies-literature

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Designed tumor necrosis factor-related apoptosis-inducing ligand variants initiating apoptosis exclusively via the DR5 receptor.

van der Sloot Almer M AM   Tur Vicente V   Szegezdi Eva E   Mullally Margaret M MM   Cool Robbert H RH   Samali Afshin A   Serrano Luis L   Quax Wim J WJ  

Proceedings of the National Academy of Sciences of the United States of America 20060526 23

Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a potential anticancer drug that selectively induces apoptosis in a variety of cancer cells by interacting with death receptors DR4 and DR5. TRAIL can also bind to decoy receptors (DcR1, DcR2, and osteoprotegerin receptor) that cannot induce apoptosis. The occurrence of DR5-responsive tumor cells indicates that a DR5 receptor-specific TRAIL variant will permit tumor-selective therapies. By using the automatic design algorithm FOL  ...[more]

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