Search

Abstract: Thrombomodulin (TM) is a single-transmembrane glycoprotein receptor for thrombin, which is best known as a cofactor for thrombin-mediated activation of anticoagulant protein C. C-type lectin-like domain (CTLD) of TM has distinct coagulation/fibrinolysis-independent anti-inflammatory properties. Here we found anti-inflammatory effects of a novel peptide (GC31) from CTLD of TM in endotoxin-induced uveitis, which was characterized by a reduction of leukocyte counts, protein concentration, tumor necrosis factor (TNF)-α and monocyte chemoattractant protein (MCP)-1 levels in aqueous humor. Through in vitro experiments, we further found that GC31 suppressed TNF-α and interleukin (IL)-6 expressions in lipopolysaccharide (LPS)-stimulated macrophage-like RAW264.7 cells and interrupted LPS-induced nuclear factor-κB (NF-κB) activation. These data indicate a beneficial role of peptide GC31 in preventing intraocular inflammatory response, especially uveitis. [Copyright &y& Elsevier]

Highlights: [•] miR-93 is downregulated in the eyes of LPS-induced EIU rats. [•] miR-93 is downregulated in LPS-treated RAW 264.7 cells. [•] miR-93 inhibits LPS-induced inflammatory cytokine production. [•] miR-93 inhibits LPS-induced activation of NF-κB signaling through IRAK4. [Copyright &y& Elsevier]