Resveratrol affects the migration and apoptosis of monocytes by blocking HMGB1/NF-κB pathway

Abstract

Background: Chronic inflammation is now recognized as a causal factor of aging. Resveratrol is a non-flavonoid compound that widely exists in plant species, exerting anti-inflammatory effects in vitro and in animal models. The chemotaxis of inflammatory cells and secretion of cytokines are key characters in inflammation response. Methods: The effects of lipopolysaccharide (LPS) and high mobility group box-1 (HMGB1) chromosomal on the migration, inflammatory response, and apoptosis of monocytes were detected. THP-1 cells were used to study the effects of resveratrol treatment on LPS- and HMGB-induced monocytes. We aimed to investigate the effect of Resveratrol on monocyte migration and the expression of a special cytokine named HMGB1 in THP-1 cells. Results: Resveratrol obviously inhibited THP-1 migration induced by LPS. LPS increased the expression of HMGB1 and its release in THP-1 cells, which were both decreased by resveratrol. Resveratrol inhibited the activity of NF-κB-p65 and the translocation of NF-κB-p65 from nucleus to cytoplasm induced by LPS. In addition, Resveratrol increased LPS and HMGB1-inhibited monocyte apoptosis. Resveratrol inhibited the LPS-induced HMGB1 secretion and its activation through NF-κB pathway. The THP-1 migration induced by LPS was inhibited by resveratrol. Conclusions: Resveratrol may inhibit monocyte migration and induce apoptosis by blocking downstream HMGB1/NF-κB/MCP-1 signaling pathways, thereby reducing systemic inflammation.