Abstract:
:Apoptosis induced by tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL/APO-2L) has been shown to exert important functions during various immunological processes. The involvement of the death adaptor proteins FADD/MORT1, TRADD, and RIP and the apoptosis-initiating caspases-8 and -10 in death signaling by the two death-inducing TRAIL receptors 1 and 2 (TRAIL-R1 and TRAIL-R2) are controversial. Analysis of the native TRAIL death-inducing signaling complex (DISC) revealed ligand-dependent recruitment of FADD/MORT1 and caspase-8. Differential precipitation of ligand-stimulated TRAIL receptors demonstrated that FADD/MORT1 and caspase-8 were recruited to TRAIL-R1 and TRAIL-R2 independently of each other. FADD/MORT1- and caspase-8-deficient Jurkat cells expressing only TRAIL-R2 were resistant to TRAIL-induced apoptosis. Thus, FADD/MORT1 and caspase-8 are essential for apoptosis induction via TRAIL-R2.
journal_name
Immunityjournal_title
Immunityauthors
Sprick MR,Weigand MA,Rieser E,Rauch CT,Juo P,Blenis J,Krammer PH,Walczak Hdoi
10.1016/s1074-7613(00)80211-3keywords:
subject
Has Abstractpub_date
2000-06-01 00:00:00pages
599-609issue
6eissn
1074-7613issn
1097-4180pii
S1074-7613(00)80211-3journal_volume
12pub_type
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