Sphingosine-1-phosphate phosphohydrolase-1 regulates ER stress-induced autophagy
نویسندگان
چکیده
منابع مشابه
Characterization of murine sphingosine-1-phosphate phosphohydrolase.
In the present study we have characterized mammalian sphingosine-1-phosphate phosphohydrolase (SPP1), an enzyme that specifically dephosphorylates sphingosine 1-phosphate (S1P) and which differs from previously described lipid phosphate phosphohydrolases. Based on sequence homology to murine SPP1, we cloned the human homolog. Transfection of human embryonic kidney 293 and Chinese hamster ovary ...
متن کاملOxidative Stress Regulates Sphingosine-1-Phosphate
Ischemia reduces oxygen availability (hypoxia) and can thus lead to tissue damage. However, restoration of blood flow, or reperfusion, has been shown initiate a second phase of injury. Ischemia/reperfusion (I/R) injury has been linked to the generation of reactive oxygen species (ROS), which in turn lead to tissue damage through induction of apoptosis.1 Indeed, I/R injury is reduced by the admi...
متن کاملShooting the messenger: oxidative stress regulates sphingosine-1-phosphate.
Ischemia reduces oxygen availability (hypoxia) and can thus lead to tissue damage. However, restoration of blood flow, or reperfusion, has been shown initiate a second phase of injury. Ischemia/reperfusion (I/R) injury has been linked to the generation of reactive oxygen species (ROS), which in turn lead to tissue damage through induction of apoptosis.1 Indeed, I/R injury is reduced by the admi...
متن کاملSphingosine-1-phosphate phosphohydrolase regulates endoplasmic reticulum-to-golgi trafficking of ceramide.
Previous studies demonstrated that sphingosine-1-phosphate (S1P) phosphohydrolase 1 (SPP-1), which is located mainly in the endoplasmic reticulum (ER), regulates sphingolipid metabolism and apoptosis (H. Le Stunff et al., J. Cell Biol. 158:1039-1049, 2002). We show here that the treatment of SPP-1-overexpressing cells with S1P, but not with dihydro-S1P, increased all ceramide species, particula...
متن کاملAutophagy induced by deficiency of sphingosine-1-phosphate phosphohydrolase 1 is switched to apoptosis by calpain-mediated autophagy-related gene 5 (Atg5) cleavage.
Sphingosine 1-phosphate (S1P) and ceramide have been implicated in both autophagy and apoptosis. However, the roles of these sphingolipid metabolites in the links between these two processes are not completely understood. Depletion of S1P phosphohydrolase-1 (SPP1), which degrades intracellular S1P, induces the unfolded protein response and endoplasmic reticulum stress-induced autophagy (Lépine,...
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ژورنال
عنوان ژورنال: Cell Death & Differentiation
سال: 2010
ISSN: 1350-9047,1476-5403
DOI: 10.1038/cdd.2010.104