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Default NMR-based metabolomic profile of hypercholesterolemic human sera: Relationship with in vitro gene expression?

NMR-based metabolomic profile of hypercholesterolemic human sera: Relationship with in vitro gene expression?

Related Articles NMR-based metabolomic profile of hypercholesterolemic human sera: Relationship with in vitro gene expression?

PLoS One. 2020;15(4):e0231506

Authors: Grimaldi M, Palisi A, Marino C, Montoro P, Capasso A, Novi S, Tecce MF, D'Ursi AM

Abstract
Hypercholesterolaemia is considered an important cause of atherosclerotic cardiovascular disease. In a previous investigation, we demonstrated that cultured hepatoma cells treated with hypercholesterolaemic sera compared with cells treated with normocholesterolaemic sera show overexpression of mRNAs related to mitochondrial 3-hydroxy-3-methylglutaryl-coenzyme A synthase (HMGCS2). In the present work, using an NMR metabolomic analysis, we demonstrate that the hypercholesterolaemic blood sera previously used to treat cultured hepatoma cells are characterized by a metabolomic profile that is significantly different from the normocholesterolaemic sera. Acetate, acetone, 2-hydroxybutyrate, cysteine, valine, and glutamine are the metabolites distinguishing the two groups. Abnormalities in the concentrations of these metabolites reflect alterations in energy-related pathways, such as pantothenate and CoA biosynthesis, pyruvate, glycolysis/gluconeogenesis, the citrate cycle, and ketone bodies. Regarding ketone bodies, the pathway is regulated by HMGCS2; therefore, serum samples previously found to be able to increase HMGCS2 mRNA levels in cultured cells also contain higher amounts of the metabolites of its encoded enzyme protein product.


PMID: 32298312 [PubMed - in process]



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