Analysis the effect of miR-141-3p/HMGB1 in LPS-induced mucus production and the apoptosis in nasal epithelial cells.

Allergic rhinitis (AR) is an allergic disease characterized by immunoglobulin E (IgE)-mediated type I hypersensitivity disorder. In the current study, we illuminated the potential roles of microRNA-141-3p (miR-141-3p) in lipopolysaccharide (LPS)-induced mucus production and the apoptosis in nasal epithelial cells (NECs). We demonstrated that miR-141-3p was significantly downregulated in nasal tissues from patients with AR and LPS-treated NECs. Upregulation of miR-141-3p decreased the level of mucin 5AC (MUC5AC) in LPS-treated NECs and induced NECs apoptosis. High Mobility Group Box 1 (HMGB1) was proved as a target of miR-141-3p and miR-141-3p negatively regulated its expression. In addition, we observed that HMGB1 was overexpressed in nasal mucosal tissues from patients with AR and LPS-treated NECs. Finally, we proved that miR-141-3p decreased the level of MUAC5AC in LPS-treated NECs through regulating HMGB1. In conclusion, miR-141-3p inhibited LPS-induced MUAC5AC production and the apoptosis of LPS-treated NECs by targeting HMGB1.