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Title: The sp2-iminosugar glycolipid 1-dodecylsulfonyl-5N,6O-oxomethylidenenojirimycin (DSO2-ONJ) as selective anti-inflammatory agent by modulation of hemeoxygenase-1 in Bv.2 microglial cells and retinal explants.
Authors: Alcalde-Estévez, Elena
Arroba, Ana I
Sánchez-Fernández, Elena M
Mellet, Carmen Ortiz
García Fernández, Jose M
Masgrau, Laura
Valverde, Ángela M
Keywords: Diabetic retinopathy;Glycolipid;Heme oxygenase-1;Inflammation;p38α MAPK;sp(2)-iminosugar
metadata.dc.subject.mesh: Animals
Anti-Inflammatory Agents
Cell Line
Gene Expression Regulation, Enzymologic
Heme Oxygenase-1
Mice, Inbred NOD
Tissue Culture Techniques
Issue Date: 27-Nov-2017
Abstract: Neuroinflammation is an early event during diabetic retinopathy (DR) that impacts the dynamics of microglia polarization. Gliosis is a hallmark of DR and we have reported the beneficial effects of 1R-DSO-ONJ, a member of the sp2-iminosugar glycolipid (sp2-IGL) family, in targeting microglia and reducing gliosis in diabetic db/db mice. Herein, we analyzed the effect of DSO2-ONJ, another family compound incorporating a sulfone group that better mimics the phosphate group of phosphatidylinositol ether lipid analogues (PIAs), in Bv.2 microglial cells treated with bacterial lipopolysaccaride (LPS) and in retinal explants from db/db mice. In addition to decreasing iNOS and inflammasome activation, the anti-inflammatory effect of DSO2-ONJ was mediated by direct p38α MAPK activation. Computational docking experiments demonstrated that DSO2-ONJ binds to p38α MAPK at the same site where PIAs and the alkyl phospholipid perifosine activators do, suggesting similar mechanism of action. Moreover, treatment of microglial cells with DSO2-ONJ increased both heme-oxygenase (HO)-1 and Il10 expression regardless the presence of LPS. In retinal explants from db/db mice, DSO2-ONJ also induced HO-1 and reduced gliosis. Since IL-10-mediated induction of HO-1 expression is mediated by p38α MAPK activation, our results suggest that this molecular mechanism is involved in the anti-inflammatory effects of DSO2-ONJ in microglia.
metadata.dc.identifier.doi: 10.1016/j.fct.2017.11.050
Appears in Collections:Producción 2020

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