ArticleCurrent issues in molecular biology2026
Integrated Analysis of Proteomics and Metabolomics Uncovered the Anti-Inflammatory Mechanisms of Baicalin in CIA Rat FLS.
Article in Current issues in molecular biology, 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
Rheumatoid arthritis (RA) is a chronic autoimmune disorder characterized by persistent synovitis, in which fibroblast-like synoviocytes (FLSs) serve as the primary effector cells that drive the destruction of joints. Baicalin has previously demonstrated efficacy in significantly ameliorating joint symptoms in rats with CIA. As such, this study aims to investigate its underlying molecular mechanisms and impact on the FLSs of rats with CIA through an integrated proteomics and transcriptomics analysis. A Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis was conducted based on two datasets; it revealed that the retrograde endocannabinoid signaling pathway-associated with susceptibility to RA-is the only one involved in both the signaling and metabolic processes modulated by baicalin. Nineteen differentially expressed proteins (DEPs) downregulated by baicalin comprise seventeen subunits of NADH dehydrogenase and two receptors, glutamate receptor 2 (GRIA2) and γ-aminobutyric acid receptor subunit alpha-5 (GABRA5). Three differential metabolites (DMs) were also affected by baicalin: γ-aminobutyric acid (GABA) and phosphatidylcholine (PC) were upregulated and phosphatidylethanolamine (PE) was downregulated. Our findings suggest that the baicalin-mediated alleviation of joint synovitis is closely related to the upregulation of GABA and PC; downregulation of GRIA2, GABRA5, and PE; and preservation of mitochondrial homeostasis within the retrograde endocannabinoid signaling pathway in FLSs.
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