A novel receptor for Apo2L/TRAIL contains a truncated death domain.
Curr Biol
; 7(12): 1003-6, 1997 Dec 01.
Article
en En
| MEDLINE
| ID: mdl-9382840
ABSTRACT
Apo2 ligand (Apo2L [1], also called TRAIL for tumor necrosis factor (TNF)-related apoptosis-inducing ligand [2]) belongs to the TNF family and activates apoptosis in tumor cells. Three closely related receptors bind Apo2L DR4 and DR5, which contain cytoplasmic death domains and signal apoptosis, and DcR1, a decoy receptor that lacks a cytoplasmic tail and inhibits Apo2L function [3-5]. By cross-hybridization with DcR1, we have identified a fourth Apo2L receptor, which contains a cytoplasmic region with a truncated death domain. We subsequently named this protein decoy receptor 2 (DcR2). The DcR2 gene mapped to human chromosome 8p21, as did the genes encoding DR4, DR5 and DcR1. A single DcR2 mRNA transcript showed a unique expression pattern in human tissues and was particularly abundant in fetal liver and adult testis. Upon overexpression, DcR2 did not activate apoptosis or nuclear factor-kappaB; however, it substantially reduced cellular sensitivity to Apo2L-induced apoptosis. These results suggest that DcR2 functions as an inhibitory Apo2L receptor.
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Base de datos:
MEDLINE
Asunto principal:
Glicoproteínas de Membrana
/
Factor de Necrosis Tumoral alfa
/
Apoptosis
/
Receptores del Factor de Necrosis Tumoral
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Curr Biol
Asunto de la revista:
BIOLOGIA
Año:
1997
Tipo del documento:
Article