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A death-domain-containing receptor that mediates apoptosis
1Cell Biology Unit, Glaxo-Wellcome Medicines Research Centre, Stevenage, Hertfordshire SG1 2NY, UK.
Nature
|November 28, 1996
Summary
Researchers discovered WSL-1, a new cell-surface receptor in the tumor necrosis factor receptor (TNFR) superfamily. This receptor induces apoptosis and activates NF-kappaB, playing a role in cell survival and death pathways.
Area of Science:
- Immunology
- Molecular Biology
- Cell Biology
Background:
- Tumor necrosis factor-alpha (TNF-alpha) and Fas ligand (FasL) induce cell death via TNFR1, TNFR2, and Fas receptors.
- These receptors are part of a superfamily regulating cell survival.
- TNFR1 and Fas possess a death domain crucial for apoptosis and NF-kappaB activation.
Purpose of the Study:
- To identify novel members of the TNFR superfamily.
- To characterize the function and interactions of a newly isolated receptor, WSL-1.
Main Methods:
- Yeast two-hybrid system using TNFR1 death domain for screening.
- Gene transfection into 3T3 and 293 cells to assess apoptosis and NF-kappaB activation.
- Analysis of protein homodimerization and interaction with TRADD.
Main Results:
- Isolation of a novel 54K receptor, WSL-1, a TNFR superfamily member.
- WSL-1 induces apoptosis and activates NF-kappaB in transfected cells.
- WSL-1 homodimerizes and interacts with TRADD, similar to TNFR1.
Conclusions:
- WSL-1 is a functional receptor within the TNFR superfamily.
- WSL-1 plays a role in apoptosis and NF-kappaB signaling.
- WSL-1 exhibits distinct tissue distribution compared to Fas and TNFR1.