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- Title
Hepatic NAPE-PLD Is a Key Regulator of Liver Lipid Metabolism.
- Authors
Lefort, Charlotte; Roumain, Martin; Van Hul, Matthias; Rastelli, Marialetizia; Manco, Rita; Leclercq, Isabelle; Delzenne, Nathalie M.; Marzo, Vincenzo Di; Flamand, Nicolas; Luquet, Serge; Silvestri, Cristoforo; Muccioli, Giulio G.; Cani, Patrice D.
- Abstract
Diverse metabolic disorders have been associated with an alteration of N-acylethanolamine (NAE) levels. These bioactive lipids are synthesized mainly by N-acylphosphatidylethanolamine-selective phospholipase D (NAPE-PLD) and influence host metabolism. We have previously discovered that NAPE-PLD in the intestine and adipose tissue is connected to the pathophysiology of obesity. However, the physiological function of NAPE-PLD in the liver remains to be deciphered. To study the role of liver NAPE-PLD on metabolism, we generated a new mouse model of inducible Napepld hepatocyte-specific deletion (Napepld∆Hep mice). In this study, we report that Napepld∆Hep mice develop a high-fat diet-like phenotype, characterized by an increased fat mass gain, hepatic steatosis and we show that Napepld∆Hep mice are more sensitive to liver inflammation. We also demonstrate that the role of liver NAPE-PLD goes beyond the mere synthesis of NAEs, since the deletion of NAPE-PLD is associated with a marked modification of various bioactive lipids involved in host homeostasis such as oxysterols and bile acids. Collectively these data suggest that NAPE-PLD in hepatocytes is a key regulator of liver bioactive lipid synthesis and a dysregulation of this enzyme leads to metabolic complications. Therefore, deepening our understanding of the regulation of NAPE-PLD could be crucial to tackle obesity and related comorbidities.
- Subjects
LIPID metabolism; PHOSPHOLIPASE D; LIVER; LIPID synthesis; METABOLIC disorders; HEPATITIS
- Publication
Cells (2073-4409), 2020, Vol 9, Issue 5, p1247
- ISSN
2073-4409
- Publication type
Article
- DOI
10.3390/cells9051247