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Lebrun LJ, Pallot G, Nguyen M, Tavernier A, Dusuel A, Pilot T, Deckert V, Dugail I, Le Guern N, Pais De Barros JP, Benkhaled A, Choubley H, Lagrost L, Masson D, Gautier T, Grober J. Increased Weight Gain and Insulin Resistance in HF-Fed PLTP Deficient Mice Is Related to Altered Inflammatory Response and Plasma Transport of Gut-Derived LPS. Int J Mol Sci 2022; 23:13226. [PMID: 36362012 PMCID: PMC9654699 DOI: 10.3390/ijms232113226] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/24/2022] [Accepted: 10/26/2022] [Indexed: 11/15/2023] Open
Abstract
Bacterial lipopolysaccharides (LPS, endotoxins) are found in high amounts in the gut lumen. LPS can cross the gut barrier and pass into the blood (endotoxemia), leading to low-grade inflammation, a common scheme in metabolic diseases. Phospholipid transfer protein (PLTP) can transfer circulating LPS to plasma lipoproteins, thereby promoting its detoxification. However, the impact of PLTP on the metabolic fate and biological effects of gut-derived LPS is unknown. This study aimed to investigate the influence of PLTP on low-grade inflammation, obesity and insulin resistance in relationship with LPS intestinal translocation and metabolic endotoxemia. Wild-type (WT) mice were compared with Pltp-deficient mice (Pltp-KO) after a 4-month high-fat (HF) diet or oral administration of labeled LPS. On a HF diet, Pltp-KO mice showed increased weight gain, adiposity, insulin resistance, lipid abnormalities and inflammation, together with a higher exposure to endotoxemia compared to WT mice. After oral administration of LPS, PLTP deficiency led to increased intestinal translocation and decreased association of LPS to lipoproteins, together with an altered catabolism of triglyceride-rich lipoproteins (TRL). Our results show that PLTP, by modulating the intestinal translocation of LPS and plasma processing of TRL-bound LPS, has a major impact on low-grade inflammation and the onset of diet-induced metabolic disorders.
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Affiliation(s)
- Lorène J. Lebrun
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
- Institut Agro Dijon, 1 Esplanade Erasme, 21000 Dijon, France
| | - Gaëtan Pallot
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
| | - Maxime Nguyen
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
- Department of Anesthesiology and Intensive Care, Dijon University Hospital, 21000 Dijon, France
| | - Annabelle Tavernier
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
- Institut Agro Dijon, 1 Esplanade Erasme, 21000 Dijon, France
| | - Alois Dusuel
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
| | - Thomas Pilot
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
| | - Valérie Deckert
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
| | - Isabelle Dugail
- Faculté de Médecine Pitié-Salpêtrière, UMR1269, 75000 Paris, France
| | - Naig Le Guern
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
| | - Jean-Paul Pais De Barros
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
- Lipidomic Analytic Plate-Forme, UBFC, Bâtiment B3, 21000 Dijon, France
| | - Anissa Benkhaled
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
| | - Hélène Choubley
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
- Lipidomic Analytic Plate-Forme, UBFC, Bâtiment B3, 21000 Dijon, France
| | - Laurent Lagrost
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
| | - David Masson
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
- Laboratory of Clinical Chemistry, François Mitterrand University Hospital, 21000 Dijon, France
| | - Thomas Gautier
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
| | - Jacques Grober
- INSERM, LNC UMR1231, Université Bourgogne Franche-Comté, 21000 Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, 21000 Dijon, France
- Institut Agro Dijon, 1 Esplanade Erasme, 21000 Dijon, France
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