ArticleJournal of lipid research2014
Acid sphingomyelinase activity is regulated by membrane lipids and facilitates cholesterol transfer by NPC2.
Article in Journal of lipid research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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Who cites it
39 citing papers in PubMed, 77 citations in OpenAlex.
- Targeting of Acid Sphingomyelinase, a Lysosomal Membrane Protein, Using Apolipoprotein E3-containing Nanodiscs.The Journal of membrane biology · 2026Article
- Unveiling Lipid Dysregulation: Lipidomics of Mouse Brain and Isolated Myelin in Niemann-Pick Disease Type C1.bioRxiv : the preprint server for biology · 2026Article
- Hepatic lipid remodeling in cold exposure uncovers direct regulation of bis(monoacylglycero)phosphate lipids by phospholipase A2 group XV.Cell metabolism · 2025Article
- PGRN as an emerging regulator of lipid metabolism in neurodegenerative diseases.Communications biology · 2025Review
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- PLD3 and PLD4 synthesize S,S-BMP, a key phospholipid enabling lipid degradation in lysosomes.Cell · 2024Article
- PLD3 and PLD4 synthesizebioRxiv : the preprint server for biology · 2024Article
- Identification of postnatal development dependent genes and proteins in porcine epididymis.BMC genomics · 2023Article
- Imipramine Treatment Alters Sphingomyelin, Cholesterol, and Glycerophospholipid Metabolism in Isolated Macrophage Lysosomes.Biomolecules · 2023Article
- Cholesterol-dependent molecular mechanisms contribute to cationic amphiphilic drugs' prevention of silica-induced inflammation.European journal of cell biology · 2023Article
- Article
- Kinetic modelling of sterol transport between plasma membrane and endo-lysosomes based on quantitative fluorescence and X-ray imaging data.Frontiers in cell and developmental biology · 2023Article
- Neuronal Ganglioside and Glycosphingolipid (GSL) Metabolism and Disease : Cascades of Secondary Metabolic Errors Can Generate Complex Pathologies (in LSDs).Advances in neurobiology · 2023Article
- Article
- Review
- Evaluation of the relationship between intravascular hemolysis and clinical manifestations in sickle cell disease: decreased hemopexin during vaso-occlusive crises and increased inflammation in acute chest syndrome.Annals of hematology · 2022Article
- Acid Sphingomyelinase, a Lysosomal and Secretory Phospholipase C, Is Key for Cellular Phospholipid Catabolism.International journal of molecular sciences · 2021Review
- Article
- Lipid presentation by the protein C receptor links coagulation with autoimmunity.Science (New York, N.Y.) · 2021Article
- Potential Mechanism ofDrug design, development and therapy · 2021Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
During endocytosis, membrane components move to intraluminal vesicles of the endolysosomal compartment for digestion. At the late endosomes, cholesterol is sorted out mainly by two sterol-binding proteins, Niemann-Pick protein type C (NPC)1 and NPC2. To study the NPC2-mediated intervesicular cholesterol transfer, we developed a liposomal assay system. (Abdul-Hammed, M., B. Breiden, M. A. Adebayo, J. O. Babalola, G. Schwarzmann, and K. Sandhoff. 2010. Role of endosomal membrane lipids and NPC2 in cholesterol transfer and membrane fusion. J. Lipid Res. 51: 1747-1760.) Anionic lipids stimulate cholesterol transfer between liposomes while SM inhibits it, even in the presence of anionic bis(monoacylglycero)phosphate (BMP). Preincubation of vesicles containing SM with acid sphingomyelinase (ASM) (SM phosphodiesterase, EC 3.1.4.12) results in hydrolysis of SM to ceramide (Cer), which enhances cholesterol transfer. Besides SM, ASM also cleaves liposomal phosphatidylcholine. Anionic phospholipids derived from the plasma membrane (phosphatidylglycerol and phosphatidic acid) stimulate SM and phosphatidylcholine hydrolysis by ASM more effectively than BMP, which is generated during endocytosis. ASM-mediated hydrolysis of liposomal SM was also stimulated by incorporation of diacylglycerol (DAG), Cer, and free fatty acids into the liposomal membranes. Conversely, phosphatidylcholine hydrolysis was inhibited by incorporation of cholesterol, Cer, DAG, monoacylglycerol, and fatty acids. Our data suggest that SM degradation by ASM is required for physiological secretion of cholesterol from the late endosomal compartment, and is a key regulator of endolysosomal lipid digestion.
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