Transient postnatal over nutrition induces long-term alterations in cardiac NLRP3-inflammasome pathway

• Published in: Nutrition, metabolism, and cardiovascular diseases metabolism, and cardiovascular diseases, 2018-09, Vol.28 (9), p.944-951
• Main Authors: Siddeek, B., Li, N., Mauduit, C., Chehade, H., Rigal, E., Tolsa, J.-F., Armengaud, J.-B., Yzydorczyk, C., Benahmed, M., Vergely, C., Simeoni, U.
• Format: Article
• Language: English
• Subjects: Animal Nutritional Physiological Phenomena; Animals; Animals, Newborn; Cardiac dysfunctions; Cardiology and cardiovascular system; Cell Line; Disease Models, Animal; Heart Diseases - etiology; Heart Diseases - genetics; Heart Diseases - metabolism; Heart Diseases - physiopathology; Human health and pathology; Inflammasome; Inflammasomes - metabolism; Insulin - metabolism; Life Sciences; Litter Size; Mice, Inbred C57BL; Micro-RNAs; MicroRNAs - genetics; MicroRNAs - metabolism; Myocardium - metabolism; NLR Family, Pyrin Domain-Containing 3 Protein - metabolism; Nutrition; Nutritional Status; Overnutrition - complications; Overnutrition - genetics; Overnutrition - metabolism; Overnutrition - physiopathology; Proto-Oncogene Protein c-ets-1 - metabolism; Rats; Signal Transduction; Time Factors
• ISSN: 0939-4753; 1590-3729
• DOI: 10.1016/j.numecd.2018.03.013

The prevalence of obesity is increasing worldwide at an alarming rate. Altered early nutrition, in particular postnatal overfeeding (PNOF), is a risk factor for impaired cardiac function in adulthood. In the understanding of the initiation or progression of heart diseases, NLRP3 inflammasome and non-coding RNAs have been proposed as key players. In this context, the aim of this study was to decipher the role of NLRP3 inflammasome and its post transcriptional control by micro-RNAs in the regulation of cardiac metabolic function induced by PNOF in mice. Based on a model of mice exposed to PNOF through litter size reduction, we observed increased cardiac protein expression levels of NLRP3 and ETS-1 associated with alterations in insulin signaling. Additionally, miR-193b levels were down-regulated in the adult hearts of overfed animals. In a cardiomyocyte cell line, transfection with miR-193b induced down-regulation of ETS-1 and NLRP3 and improved insulin signaling. These findings suggest that the miR-193b could be involved in cardiac phenotypic changes observed in adulthood induced by PNOF likely through the regulation of ETS-1 and NLRP3 expression, and through this of insulin signaling. •Early postnatal nutrition influences adult heart function.•This study reports the potential role of NLRP3 inflammasome and its regulation by miR-193b in the cardiac dysfunction induced by postnatal overnutrition.•NLRP3 inflammasome and miR-193b alterations are associated with inflammation.•NLRP3 inflamasomme and miR-193b alterations are associated with altered insulin signaling and fat storage in cardiomyocytes.