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Salidroside alleviates early-stage MASH through the PPARγ-mediated inflammatory signaling pathway
Jun Zhang1, Jintao Xuan2, Zheyun He3
1Liver Disease Department of Integrative Medicine, Ningbo No.2 Hospital, Ningbo, Zhejiang, 315010, China; Department of Infectious Diseases, Affiliated Hospital of Jiaxing University/The First Hospital of Jiaxing, Jiaxing, Zhejiang, 314000, China.
Ethnopharmacological Relevance:
Rhodiola rosea, a traditional Chinese medicinal herb, has long been prized for enhancing energy metabolism and reducing inflammation. Salidroside, the primary bioactive component of Rhodiola rosea, has shown promising protective effects against MASH. However, the mechanisms through which salidroside alleviates MASH remain unclear.
Aim Of The Study:
This study evaluated the therapeutic effects and underlying mechanisms of salidroside in MASH.
Materials And Methods:
MASH was induced in mice via CDAHFD feeding, after which the mice were treated with salidroside daily for four weeks. To investigate the therapeutic potential and underlying mechanisms of salidroside in MASH, we employed biochemical assays, H&E staining, transcriptomics, metabolomics, network pharmacology, molecular docking, and Western blotting. The role of PPARγ was further investigated using the inhibitor GW9662.
Results:
Salidroside significantly reduced hepatic lipid accumulation, serum ALT and AST levels, and NAS scores, and ameliorated inflammatory infiltration in MASH mice. Transcriptomic and metabolomic analyses revealed enrichment in the PPAR signaling pathway. Integrated multiomics and network pharmacology revealed PPARγ as a core target. Molecular docking confirmed strong binding between salidroside and PPARγ. Treatment with salidroside upregulated PPARγ expression and suppressed NF-κB phosphorylation and proinflammatory cytokine production. Cotreatment with GW9662 abolished these protective effects.
Conclusion:
Salidroside alleviates MASH by activating PPARγ and inhibiting the NF-κB inflammatory pathway, thereby reducing hepatic lipid deposition and inflammation. These results demonstrate the potential of salidroside as a promising therapeutic agent for MASH.
