ArticleFrontiers in pharmacology2026
Rus-GXF, a ruscogenin glycoside, binds to the ADP-binding domain of JAK1 to prevent inflammation and barrier damage in acute lung injury.
Article in Frontiers in pharmacology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Ruscogenin-1-O-[β-D-glucopyranosyl (1→2)][β-D-xylopyranosyl (1→3)] -β-D-fucopyranoside (Rus-GXF) is a ruscogenin glycoside of Methods: In this study, the preventive and therapeutic effects of Rus-GXF on acute lung injury (ALI) were investigated using transcriptome RNA sequencing, network pharmacology, molecular docking, molecular dynamics simulation and other Results: Rus-GXF suppressed inflammatory responses in two key cell types involved in lung injury. In immune cells (RAW264.7), it inhibited the production of pivotal pro-inflammatory mediators and their regulatory genes. Similarly, in pulmonary epithelial cells (BEAS-2B), it reduced the expression of inflammatory signals and concurrently enhanced markers of cellular tight junction proteins. In mice, Rus-GXF alleviated ALI severity, evidenced by decreased lung wet/dry ratio, bronchoalveolar lavage fluid protein content, pro-inflammatory cytokine levels, and histopathological scores. Integrated network pharmacology and transcriptomics indicated that Rus-GXF acts through multi-target mechanisms in ALI. Molecular docking and dynamics simulations revealed that Rus-GXF acts as an allosteric inhibitor of JAK1, thereby preventing its activation and subsequent STAT3 phosphorylation. The inhibitory effect of Rus-GXF on the JAK1/STAT3 signaling pathway was investigated by immunohistochemistry (IHC) and Western blot analysis (WB). Conclusion: These results demonstrate that Rus-GXF suppresses the macrophage-derived cytokine storm, alleviates inflammation, and improves barrier function. It functions as a JAK1 inhibitor to regulate ALI progression via the JAK1/STAT3 signaling pathway.
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