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Chapter category: Signal Transduction

Fas-More Than an Apoptosis Inducer

This chapter appears in the following book:

Fas Signaling

Edited by: Harald Wajant
ISBN: 0-387-32172-1
» Get more information about this book at landesbioscience.com «

Chapter authors:
Harald Wajant


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Fas (Apo-1 or CD95) and its corresponding ligand FasL (CD95L) are representative members of the TNF receptor and TNF ligand family that have been implicated in a variety of apoptotic processes, involved in T-cell induced cytotoxicity, activation-induced cell death, immune privilege, tumor surveillance and angiogenesis. Although, studies on the FasL/Fas system mainly focused on its pro-apoptotic role, a couple of additional apoptosis-independent functions of Fas have been reported, including induction of proliferation in T-cells and fibroblasts, hepatocyte regeneration, chemokine production, DC maturation and neurite outgrowth. While the apoptotic signaling capacities of FasL and Fas were intensively studied and well understood, the molecular mechanisms of nonapoptotic Fas signaling are ill defined yet. This chapter will review our current understanding of nonapoptotic FasL/Fas functions and in particular address how the balance between apoptotic and nonapoptotic Fas signaling is regulated.

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Additional chapters from this book:

The FasL-Fas System in Disease and Therapy

Harald Wajant and Frank Henkler

The physiological roles of the FasL-Fas system include apoptosis-related processes like tumor surveillance, elimination of virus infected cells or deletion of autoreactive T- and B-cells. In recent ...

Fas-More Than an Apoptosis Inducer

Harald Wajant

Fas (Apo-1 or CD95) and its corresponding ligand FasL (CD95L) are representative members of the TNF receptor and TNF ligand family that have been implicated in a variety of apoptotic processes, invo...

FasL and Fas: Typical Members of the TNF Ligand and Receptor Family

Anja Krippner-Heidenreich and Peter Scheurich

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Fas Induced Necrosis

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Fas/CD95 is an important regulator of cell death in development and homeostasis of the immune system. Apoptosis is the most frequently observed type of cell death induced by Fas. It is characterized...

Retrograde Fas Ligand Signaling

A. Linkermann, J. Qian and O. Janssen

As highlighted in the previous chapters, the interaction of Fas with Fas Ligand (FasL) affects many different aspects related to activation and apoptosis of Fas-expressing immune and tumor cells. Ov...

Fas-Activation, Development and Homeostasis of T Cells

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Fas (APO-1/CD95) is found on various cells of the immune system where its expression depends on differentiation and activation status of the cells. Analysis of the function of Fas on T lymphocytes h...

FasL and Fas in Liver Homeostasis and Hepatic Injuries

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Role of Ceramide in CD95 Signaling

Volker Teichgr?ber, Gabriele Hessler and Erich Gulbins

Recent studies indicate that the reorganization of receptor molecules in distinct domains of the cell membrane constitutes an important and general mechanism that is required for the initiation of s...

FasL-Independent Activation of Fas

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Fas death receptor (also named CD95 or APO-1) is physiologically activated through binding to its cognate ligand, FasL. Fas/FasL interaction induces oligomerization and aggregation of Fas receptor, ...

Tools for Activation and Neutralization of Fas Signaling

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Apoptosis mediated by the Fas / FasL pair of receptor and ligand is involved in physiological or pathological processes in which cell death is either required to eliminate potentially harmful infect...

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Margot Thome

Fas is a member of the tumor necrosis factor receptor family that can induce apoptosis by the recruitment and activation of caspase-8 (formerly called FLICE, MACH or MCH-5). Recently, caspase-8/FLIC...


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