Journal
CELLULAR AND MOLECULAR LIFE SCIENCES
Volume 61, Issue 15, Pages 1854-1866Publisher
BIRKHAUSER VERLAG AG
DOI: 10.1007/s00018-004-3467-7
Keywords
dependence receptor; apoptosis; development; tumor suppressor; caspase
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The recently described family of dependence receptors is a new family of functionally related receptors. These proteins have little sequence similarity but display the common feature of inducing two completely opposite intracellular signals depending on ligand availability: in the presence of ligand, these receptors transduce a positive signal leading to survival, differentiation or migration, while in the absence of ligand, the receptors initiate or amplify a negative signal for apoptosis. Thus, cells that express these proteins manifest a state of dependence on their respective ligands. The mechanisms that trigger cell death induction in the absence of ligand are in large part unknown, but typically require cleavage by specific caspases. In this review we will present the proposed mechanisms for cell death induction by these receptors and their potential function in nervous system development and regulation of tumorigenesis.
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