Cutting edge: two distinct motifs within the Fas ligand tail regulate Fas ligand-mediated costimulation.

Aqueous Humor Levels of Soluble Fas and Fas-ligand in Patients with Primary Open Angle and Pseudoex-foliation Glaucoma

Background: Glaucoma is one of the most common causes of blindness and is usually associated with elevated intraocular pressure. In patients with primary open angle glau-coma the number of trabecular meshwork cells is decreased. Death of the trabecular meshwork cells may be a result of apoptosis. Objective: To investigate the aqueous humor levels of soluble Fas (sFas) and Fas-Ligand (sFasL) in ...

The dual functions of fas ligand in the regulation of peripheral CD8+ and CD4+ T cells.

Although Fas ligand (FasL) is well characterized for its capacity to deliver a death signal through its receptor Fas, recent work demonstrates that FasL also can receive signals facilitating antigen (Ag)-specific proliferation of CD8(+) T cells. The fact that the gld mutation differentially influences the proliferative capacity of CD8(+) and CD4(+) T cells presented the intriguing possibility t...

Separate domains of the human fas ligand dictate self-association and receptor binding.

The Fas receptor rapidly induces apoptosis when activated by ligand binding or by cross-linking with anti-Fas antibody. The Fas ligand (FasL), a member of the tumor necrosis factor family of ligands, is a 40-kilodalton type II transmembrane protein which is cleaved to produce soluble ligand. Although the Fas-FasL interaction plays a critical role in peripheral T cell homeostasis and cytotoxic T...

Fas and tumor necrosis factor receptor-mediated cell death: similarities and distinctions

Fas antigen and two tumor necrosis factor receptors (TNFR), p55 and p75, are implicated in the triggering of cell death upon stimulation by natural ligands and specific monoclonal antibodies. However, the relative efficiency of each receptor, the mechanisms that regulate their function and the signaling pathways they employ, remain to be elucidated. In this study, fusion proteins, composed of t...

Antibody but Not with Fas Ligand Activation Occurring with Agonistic Anti-Fas Microaggregates: An Early Event of Fas Cutting Edge: SDS-Stable Fas