Jing Guan Fang, an herbal formula, as an immunomodulator: opposing effects on basal and lipopolysaccharide-induced inflammation of macrophage via JAK/STAT3 and MAPK pathways.

ABSTRACT: Jing Guan Fang, a formula based on Forsythia suspensa, is commonly used for preventing SARS-CoV-2 infection and alleviating cold-like symptoms. However, the precise immunoregulatory mechanisms underlying its effects remain unclear and warrant investigation. This study aims to investigate the immunomodulatory effects of JGF and further elucidate the underlying mechanisms. The results showed that JGF had minimal impact on the cell viability of RAW264.7 and MH-S. In the absence of LPS stimulation, JGF promoted macrophages to produce NO and pro-inflammatory cytokines in a concentration-dependent manner. However, after LPS treatment, the JGF add-on exhibited contrasting effects, with the half-maximal effective concentrations for reducing macrophage-secreted NO and IL-6 being 80 and 180 μg/mL, r

SUBMITTER: Lin ZH 

PROVIDER: S-EPMC12365646 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature