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FEBS J. 2017 Apr;284(8):1131-1159. doi: 10.1111/febs.13968. Epub 2016 Dec 14.

Cell death-independent activities of the death receptors CD95, TRAILR1, and TRAILR2.

Author information

1
Division of Molecular Internal Medicine, Medical Clinic and Polyclinic II, University Hospital Würzburg, Germany.

Abstract

Since their identification more than 20 years ago, the death receptors CD95, TRAILR1, and TRAILR2 have been intensively studied with respect to their cell death-inducing activities. These receptors, however, can also trigger a variety of cell death-independent cellular responses reaching from the activation of proinflammatory gene transcription programs over the stimulation of proliferation and differentiation to induction of cell migration. The cell death-inducing signaling mechanisms of CD95 and the TRAIL death receptors are well understood. In contrast, despite the increasing recognition of the biological and pathophysiological relevance of the cell death-independent activities of CD95, TRAILR1, and TRAILR2, the corresponding signaling mechanisms are less understood and give no fully coherent picture. This review is focused on the cell death-independent activities of CD95 and the TRAIL death receptors and addresses mainly three questions: (a) how are these receptors linked to noncell death pathways at the molecular level, (b) which factors determine the balance of cell death and cell death-independent activities of CD95 and the TRAIL death receptors at the cellular level, and (c) what are the consequences of the cell death-independent functions of these receptors for their role in cancer and inflammatory diseases.

KEYWORDS:

TRAIL ; CD95; NF-kappaB; RIP1; apoptosis; caspase-8; cell migration; death receptors; necroptosis

PMID:
27865080
DOI:
10.1111/febs.13968
[Indexed for MEDLINE]
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