Thiophene-based styrene derivative improves colitis symptoms in DSS-induced BALB/C mice through AhR-mediated gut barrier function and inflammatory responses.
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Worldwide incidence and prevalence of ulcerative colitis (UC) has been rising in recent years, which can occur at any age, with a high frequency seen in young children and people aged 40 to 50. The aryl hydrocarbon receptor (AhR) activation axis is well known for its important role in the regulation of intestinal inflammation, intestinal homeostasis, intestinal immune system and improvement of colitis outcomes. This study investigated the therapeutic efficacy of the thiophene-based styrene derivative (TBSD), a novel AhR agonist against UC in vitro and in vivo. TBSD decreased FITC-dextran hyperpermeability, upregulated the tight junction (TJ)-related protein expression levels and regulated the inflammatory mediators including tumor necrosis factor-alpha (TNF-α), interleukin (IL)-6, IL-22 and cyclooxygenase 2 (COX-2) in the Caco-2/RAW264.7 co-culture system and in DSS-induced UC-like mice. Overall, TBSD may be considered as a promising therapeutic agent to improve UC severity through mitigating inflammation, maintaining intestinal mucosal homeostasis and enhancing the intestinal barrier integrity.