Abstract
Apoptosis can be activated by tumor necrosis factor-related apoptosis-inducing ligand
(TRAIL) in a wide range of tumor cells, but not in non-transformed cells.
TRAIL interaction with receptors DR4 or DR5 induces apoptosis, whereas DcR1,
DcR2 and osteoprotegerin are decoy receptors for TRAIL. TRAIL variants (single
mutant, D269H, and double mutant D296H/E195R) engineered to selectively activate
DR5 but not DR4 enhanced pro-caspase-8 processing and apoptosis in tumor
cells, compared to wild-type TRAIL. D269H/E195R showed a 17 fold faster kinetics
of receptor activation than wild-type TRAIL. The robust receptor activation was
not due to altered 3D ligand structures or aggregation but to high affinity and selectivity
towards DR5, which prevented ligand-induced receptor heteromerization and
neutralization by decoys. These findings have important implications for the design
of anticancer therapeutic agents and cytokine engineering.
(TRAIL) in a wide range of tumor cells, but not in non-transformed cells.
TRAIL interaction with receptors DR4 or DR5 induces apoptosis, whereas DcR1,
DcR2 and osteoprotegerin are decoy receptors for TRAIL. TRAIL variants (single
mutant, D269H, and double mutant D296H/E195R) engineered to selectively activate
DR5 but not DR4 enhanced pro-caspase-8 processing and apoptosis in tumor
cells, compared to wild-type TRAIL. D269H/E195R showed a 17 fold faster kinetics
of receptor activation than wild-type TRAIL. The robust receptor activation was
not due to altered 3D ligand structures or aggregation but to high affinity and selectivity
towards DR5, which prevented ligand-induced receptor heteromerization and
neutralization by decoys. These findings have important implications for the design
of anticancer therapeutic agents and cytokine engineering.
Original language | English |
---|---|
Title of host publication | ADVANCES IN TNF FAMILY RESEARCH |
Editors | D Wallach, A Kovalenko, M Feldman |
Publisher | SPRINGER-VERLAG BERLIN |
Pages | 808-808 |
Number of pages | 1 |
Volume | 691 |
ISBN (Electronic) | 978-1-4419-6612-4 |
ISBN (Print) | 978-1-4419-6611-7 |
Publication status | Published - 2011 |
Event | 12th Biennial International Tumor Necrosis Factor Conference - Madrid, Spain Duration: 26-Apr-2009 → 29-Apr-2009 |
Publication series
Name | Advances in Experimental Medicine and Biology |
---|---|
Publisher | SPRINGER-VERLAG BERLIN |
Volume | 691 |
ISSN (Print) | 0065-2598 |
Conference
Conference | 12th Biennial International Tumor Necrosis Factor Conference |
---|---|
Country/Territory | Spain |
City | Madrid |
Period | 26/04/2009 → 29/04/2009 |