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- Title
Hydroxytyrosol Modulates Adipocyte Gene and miRNA Expression Under Inflammatory Condition.
- Authors
Scoditti, Egeria; Carpi, Sara; Massaro, Marika; Pellegrino, Mariangela; Polini, Beatrice; Carluccio, Maria Annunziata; Wabitsch, Martin; Verri, Tiziano; Nieri, Paola; De Caterina, Raffaele
- Abstract
Chronic inflammation of the adipose tissue (AT) is a major contributor to obesity-associated cardiometabolic complications. The olive oil polyphenol hydroxytyrosol (HT) contributes to Mediterranean diet cardiometabolic benefits through mechanisms still partially unknown. We investigated HT (1 and 10 μmol/L) effects on gene expression (mRNA and microRNA) related to inflammation induced by 10 ng/mL tumor necrosis factor (TNF)-α in human Simpson–Golabi–Behmel Syndrome (SGBS) adipocytes. At real-time PCR, HT significantly inhibited TNF-α-induced mRNA levels, of monocyte chemoattractant protein-1, C-X-C Motif Ligand-10, interleukin (IL)-1β, IL-6, vascular endothelial growth factor, plasminogen activator inhibitor-1, cyclooxygenase-2, macrophage colony-stimulating factor, matrix metalloproteinase-2, Cu/Zn superoxide dismutase-1, and glutathione peroxidase, as well as surface expression of intercellular adhesion molecule-1, and reverted the TNF-α-mediated inhibition of endothelial nitric oxide synthase, peroxisome proliferator-activated receptor coactivator-1α, and glucose transporter-4. We found similar effects in adipocytes stimulated by macrophage-conditioned media. Accordingly, HT significantly counteracted miR-155-5p, miR-34a-5p, and let-7c-5p expression in both cells and exosomes, and prevented NF-κB activation and production of reactive oxygen species. HT can therefore modulate adipocyte gene expression profile through mechanisms involving a reduction of oxidative stress and NF-κB inhibition. By such mechanisms, HT may blunt macrophage recruitment and improve AT inflammation, preventing the deregulation of pathways involved in obesity-related diseases.
- Subjects
OBESITY complications; REACTIVE oxygen species; BLOOD coagulation factors; CARDIOVASCULAR diseases risk factors; COLONY-stimulating factors (Physiology); FAT cells; GENE expression; GLUTATHIONE; INFLAMMATION; INSULIN resistance; MACROPHAGES; NONSTEROIDAL anti-inflammatory agents; OLIVE oil; POLYMERASE chain reaction; SUPEROXIDE dismutase; TUMOR necrosis factors; NITRIC-oxide synthases; CYCLOOXYGENASE 2; VASCULAR endothelial growth factors; PEROXISOME proliferator-activated receptors; GENE expression profiling; EXOSOMES; MATRIX metalloproteinases
- Publication
Nutrients, 2019, Vol 11, Issue 10, p2493
- ISSN
2072-6643
- Publication type
Article
- DOI
10.3390/nu11102493