منابع مشابه
Macquarimicin A inhibits membrane-bound neutral sphingomyelinase from rat brain.
Ceramide, the product of sphingomyelin (SM) hydrolysis by neutral pH-optimum and magnesium-dependent sphingomyelinase (N-SMase), has been reported to increase in response to several inflammatory stimuli including TNFa and IL-1/3. Thus, it has been suggested that ceramide generation plays an important role in such stimuli-mediated physiological and pathological processes* ~9). Moreover, cell per...
متن کاملNeutral Sphingomyelinase and Breast Cancer Research
Our understanding of the functions of neutral sphingomyelinase (N-SMase) signaling has advanced over the past decade. In this review, we focus on the roles and regulation of N-SMase 1, N-SMase 2, N-SMase 3, an enzyme that generates the bioactive lipid ceramide through the hydrolysis of the membrane lipid sphingomyelin. A large body of work has now implicated N-SMase 2 in a diverse set of cellul...
متن کاملNeutral sphingomyelinase 2 (nSMase2) is the primary neutral sphingomyelinase isoform activated by tumour necrosis factor-α in MCF-7 cells.
Activation of N-SMase (neutral sphingomyelinase) is an established part of the response of cytokines such as TNF (tumour necrosis factor)-α. However, it remains unclear which of the currently cloned N-SMase isoforms (nSMase1, nSMase2 and nSMase3) are responsible for this activity. In MCF-7 cells, we found that TNF-α induces late, but not early, increases in N-SMase activity, and that nSMase2 is...
متن کاملNeutral sphingomyelinase-2, acid sphingomyelinase, and ceramide levels in COPD patients compared to controls
BACKGROUND Increased pulmonary ceramide levels are suggested to play a causative role in lung diseases including COPD. Neutral sphingomyelinase-2 (nSMase-2) and acid SMase (aSMase), which hydrolyze sphingomyelin to produce ceramide, are activated by a range of cellular stresses, including inflammatory cytokines and pathogens, but notably cigarette smoke appears to only activate nSMase-2. Our pr...
متن کاملNuclear localization of neutral sphingomyelinase 1: biochemical and immunocytochemical analyses.
To examine the intracellular localization of neutral sphingomyelinase 1 (nSMase 1), a rabbit polyclonal antibody was raised against a recombinant form of the enzyme expressed in E. coli. It has been reported that, in rat liver or in ascites hepatoma AH7974, high activity of neutral sphingomyelinase (SMase) is found at the plasma membrane, with a lesser but significant amount in nucleus and cyto...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1989
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)63892-x