Administration of N-Acyl-Phosphatidylethanolamine Expressing Bacteria to Low Density Lipoprotein Receptor−/− Mice Improves Indices of Cardiometabolic Disease
Year: 2019
Type: article
Abstract: Obesity increases the risk for cardiometabolic diseases. N-acyl phosphatidylethanolamines (NAPEs) are precursors of N-acylethanolamides, which are endogenous lipid satiety factors. Incorporating engineered bacteria expressing NAPEs into the gut microbiota retards development of diet induced obesity in wild-type mice. Because NAPEs can also exert anti-inflammatory effects, we hypothesized that administering NAPE-expressing bacteria to low-density lipoprotein receptor (Ldlr)−/− mice fed a Western diet would improve various indices of cardiometabolic disease manifested by these mice. NAPE-expressing E. coli Nissle 1917 (pNAPE-EcN), control Nissle 1917 (pEcN), or vehicle (veh) were given via drinking water to Ldlr−/− mice for 12 weeks. Compared to pEcN or veh treatment, pNAPE-EcN significantly reduced body weight and adiposity, hepatic triglycerides, fatty acid synthesis genes, and increased expression of fatty acid oxidation genes. pNAPE-EcN also significantly reduced markers for hepatic inflammation and early signs of fibrotic development. Serum cholesterol was reduced with pNAPE-EcN, but atherosclerotic lesion size showed only a non-significant trend for reduction. However, pNAPE-EcN treatment reduced lesion necrosis by 69% indicating an effect on preventing macrophage inflammatory death. Our results suggest that incorporation of NAPE expressing bacteria into the gut microbiota can potentially serve as an adjuvant therapy to retard development of cardiometabolic disease.
Source: Scientific Reports
Institutions: Vanderbilt University, Vanderbilt University Medical Center
Language: English
Topic: Gut microbiota and health
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $1,790
Funders: U.S. Department of Health and Human Services, Vanderbilt University, Center for Strategic Scientific Initiatives, National Cancer Institute, National Institutes of Health, National Heart, Lung, and Blood Institute, National Cancer Institute, National Institute of Diabetes and Digestive and Kidney Diseases, National Center for Complementary and Integrative Health
Awards: G1221739687, G1600767307, G2150399133, Vanderbilt Mouse Metabolic Phenotyping Center, G3417354795, Vanderbilt Mouse Metabolic Phenotyping Center, G435113873, G4424950377, G4895147326, G4968871293, G5436572433, Therapeutically Modified Gut Bacteria for Treatment of Obesity, G6788539964, G8976216317, G9000044366, G9000089795, G9000132431, Molecular and Cellular Basis for Digestive Diseases, Cancer Center Support Grant, HDL Function in Human Disease
OpenAlex ID: W2914425514