Purpose: Endothelial-to-mesenchymal transition (EndMT) plays an important role in pathogenesis of a number of inflammatory diseases. Hydroxytyrosol (HT) and, particularly, its major plasma metabolite HT-3O sulfate (HT-3Os) are known olive oil antioxidant and anti-inflammatory polyphenols which exert benefits against vascular diseases by improving endothelial function. However, to date the HT-3Os role in EndMT is not well known. Methods: To investigate the HT-3Os effects on EndMT in the inflamed endothelium, we used an in vitro model of endothelial dysfunction, challenging endothelial cells (EC), human umbilical EC (HUVEC) and human retinal EC (HREC) with Interleukin-1β (IL-1β), an inflammatory agent. HREC were used as a specific model to investigate HT-3Os effects on vascular retinal diseases. Results: We found that IL-1β treatment-induced EndMT phenotype in both cell models, also changing cell morphology. HT-3Os protected EC against IL-1β effects, recovering cell morphology and phenotype. Mechanistically, HT-3Os targeting fibroblast growth factor receptor 1 FGFR1 expression and let-7 miRNA, controlled transforming growth factor beta (TGF-β) signalling in EC, downregulating transcription factors expression (SNAI1 and ZEB2) and gene expression of late EndMT markers (FN1, VIM, NOTCH3, CNN1, MMP2 and MMP9). Conclusion: These results demonstrate that HT-3Os blunts pathological EndMT in inflamed EC, maintaining high let-7 miRNA expression and preventing activation of TGF-β signalling.

Terzuoli, E., Nannelli, G., Giachetti, A., Morbidelli, L., Ziche, M., Donnini, S. (2020). Targeting endothelial-to-mesenchymal transition: the protective role of hydroxytyrosol sulfate metabolite. EUROPEAN JOURNAL OF NUTRITION, 59(2), 517-527 [10.1007/s00394-019-01920-x].

Targeting endothelial-to-mesenchymal transition: the protective role of hydroxytyrosol sulfate metabolite

Terzuoli, Erika
Investigation
;
Nannelli, Ginevra
Investigation
;
Morbidelli, Lucia
Writing – Review & Editing
;
Ziche, Marina
Supervision
;
Donnini, Sandra
Project Administration
2020-01-01

Abstract

Purpose: Endothelial-to-mesenchymal transition (EndMT) plays an important role in pathogenesis of a number of inflammatory diseases. Hydroxytyrosol (HT) and, particularly, its major plasma metabolite HT-3O sulfate (HT-3Os) are known olive oil antioxidant and anti-inflammatory polyphenols which exert benefits against vascular diseases by improving endothelial function. However, to date the HT-3Os role in EndMT is not well known. Methods: To investigate the HT-3Os effects on EndMT in the inflamed endothelium, we used an in vitro model of endothelial dysfunction, challenging endothelial cells (EC), human umbilical EC (HUVEC) and human retinal EC (HREC) with Interleukin-1β (IL-1β), an inflammatory agent. HREC were used as a specific model to investigate HT-3Os effects on vascular retinal diseases. Results: We found that IL-1β treatment-induced EndMT phenotype in both cell models, also changing cell morphology. HT-3Os protected EC against IL-1β effects, recovering cell morphology and phenotype. Mechanistically, HT-3Os targeting fibroblast growth factor receptor 1 FGFR1 expression and let-7 miRNA, controlled transforming growth factor beta (TGF-β) signalling in EC, downregulating transcription factors expression (SNAI1 and ZEB2) and gene expression of late EndMT markers (FN1, VIM, NOTCH3, CNN1, MMP2 and MMP9). Conclusion: These results demonstrate that HT-3Os blunts pathological EndMT in inflamed EC, maintaining high let-7 miRNA expression and preventing activation of TGF-β signalling.
2020
Terzuoli, E., Nannelli, G., Giachetti, A., Morbidelli, L., Ziche, M., Donnini, S. (2020). Targeting endothelial-to-mesenchymal transition: the protective role of hydroxytyrosol sulfate metabolite. EUROPEAN JOURNAL OF NUTRITION, 59(2), 517-527 [10.1007/s00394-019-01920-x].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1069225