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

Abstract : Background and aims: 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. Methods and results: 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. Conclusions: 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.
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Contributeur : Catherine Vergely Connectez-vous pour contacter le contributeur
Soumis le : jeudi 20 octobre 2022 - 13:28:59
Dernière modification le : lundi 24 octobre 2022 - 15:26:19


Distributed under a Creative Commons Paternité 4.0 International License



B Siddeek, N Li, C Mauduit, H Chehade, E Rigal, et al.. Transient postnatal over nutrition induces long-term alterations in cardiac NLRP3-inflammasome pathway. Nutrition, Metabolism and Cardiovascular Diseases, 2018, 28, pp.944 - 951. ⟨10.1016/j.numecd.2018.03.013⟩. ⟨hal-03431570⟩



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