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Exploring the Therapeutic Landscape of Sphingomyelinases

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Lipid Signaling in Human Diseases

Part of the book series: Handbook of Experimental Pharmacology ((HEP,volume 259))

Abstract

Sphingosine, ceramide, sphingosine-1-phosphate, and other related sphingolipids have emerged as important bioactive molecules involved in a variety of key cellular processes such as cell growth, differentiation, apoptosis, exosome release, and inter- and intracellular cell communication, making the pathways of sphingolipid metabolism a key domain in maintaining cell homeostasis (Hannun and Obeid, Trends Biochem Sci 20:73–77, 1995; Hannun and Obeid, Nat Rev Mol Cell Biol 9:139–150, 2008; Kosaka et al., J Biol Chem 288:10849–10859, 2013). Various studies have determined that these pathways play a central role in regulating intracellular production of ceramide and the other bioactive sphingolipids and hence are an important component of signaling in various diseases such as cancer, diabetes, and neurodegenerative and cardiovascular diseases (Chaube et al., Biochim Biophys Acta 1821:313–323, 2012; Clarke et al., Adv Enzyme Regul 51:51–58, 2011b; Horres and Hannun, Neurochem Res 37:1137–1149, 2012). In this chapter, we discuss one of the major enzyme classes in producing ceramide, sphingomyelinases (SMases), from a biochemical and structural perspective with an emphasis on their applicability as therapeutic targets.

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Abbreviations

alk-SMase:

Alkaline sphingomyelinase

APL:

Anionic phospholipid

aSMase :

Acid sphingomyelinase

BMP:

Bis(monoacylglycero)phosphate

CDase:

Ceramidase

CerK:

Ceramide kinase

CerS:

Ceramide synthase

cPLA2 :

Phospholipase A2

DES:

Dihydroceramide desaturase

DSS:

Dextran sodium sulfate

ENPP:

Ectonucleotide pyrophosphate phosphodiesterase

ER:

Endoplasmic reticulum

ERCP:

Endoscopic retrograde cholangiopancreatography

GBA:

Acid glucocerebrosidase

GCS:

Glucosylceramide synthase

GSH:

Glutathione

HDL:

High-density lipoprotein

IL-1:

Interleukin 1

IL-6:

Interleukin 6

IPC:

Inositol phosphorylceramide

ISC1:

Inositol phosphosphingolipid phospholipase C1

MA-nSMase:

Mitochondria-associated neutral sphingomyelinase

MAPK:

Mitogen-activated protein kinase

MIPC:

Mannosylinositol phosphorylceramide

NMDA:

N-methyl D-aspartate

NPD:

Niemann-Pick disease

nSMase:

Neutral sphingomyelinase

PA:

Phosphatidic acid

POPG:

1-Palmitoyl-2-oleoyl-sn-glycero-3-phospho-(1′-rac-glycerol)

PS:

Phosphatidylserine

S1P:

Sphingosine-1-phosphate

SAR:

Structure-activity relationship

SK:

Sphingosine kinase

SM:

Sphingomyelin

SMase:

Sphingomyelinase

SMPD:

Sphingomyelin phosphodiesterase

SMS:

Sphingomyelin synthase

SPP:

Sphingosine-1-phosphate phosphatase

SPT:

Serine palmitoyltransferase

TNF:

Tumor necrosis factor

WT:

Wild-type

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Acknowledgments

We would like to thank Dr. Christopher J. Clarke, Dr. Michael V. Airola, and Dr. Benjamin Newcomb for providing valuable feedback. This work was supported in part by NIH grant R35 GM118128.

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Correspondence to Yusuf A. Hannun .

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Shanbhogue, P., Hannun, Y.A. (2018). Exploring the Therapeutic Landscape of Sphingomyelinases. In: Gomez-Cambronero, J., Frohman, M. (eds) Lipid Signaling in Human Diseases. Handbook of Experimental Pharmacology, vol 259. Springer, Cham. https://doi.org/10.1007/164_2018_179

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