Study on the mechanism of puerarin against osteoarthritis from ferroptosis based on network pharmacology and bioinformatics.

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Ferroptosis-related targets were obtained from FerrDb. Puerarin action targets were retrieved from TCMSP, Pharmmappe, SwissTargetPrediction, and Targetnet databases, and supplemented with PubMed. The gene expression profiles of GSE12021, GSE55235, and GSE82107 were obtained using \"Osteoarthritis\" as the search term in the GEO database, and the differential expression gene screening analysis was performed for osteoarthritis. The intersection targets between puerarin, iron death, and osteoarthritis were obtained using Venn diagrams. GO and KEGG analyses were conducted with R software. Molecular docking and visualization of puerarin and core targets were performed using Autodock Vina and PyMol software. The effects of puerarin on the cell viability and the TNFα, IL6, and Ilβ levels of human inflammation articular chondrocytes were tested in vitro experiments. Puerarin, ferroptosis, and osteoarthritis share four targets: PLIN2, PTGS2, VEGFA, and IL6. GO enrichment analysis showed that puerarin maintained the blood-brain barrier, regulated peptide serine phosphorylation, and had anti-inflammatory effects. KEGG analysis showed that puerarin's anti-inflammatory effects were mainly through VEGF, IL-17, C-type lectin receptor, HIF-1, TNF, and other signaling pathways. Puerarin closely bound PLIN2, PTGS2, VEGFA, and IL6 targets in molecular docking. In vitro, puerarin prevented osteoarthritis. Network pharmacology and bioinformatics explained puerarin's multi-target and multi-pathway treatment of OA, which may be related to ferroptosis, and confirmed its anti-inflammatory effect.", "claims": [{"id": "claim-method", "statement": "SPSS 22.0 software was used for processing, measurement data in line with normal distribution were expressed as (x±s), t test was used for comparison between two groups, one-way analysis of variance was used for comparison between multiple groups, and LSD-t test was used for pairwise comparison between groups.", "kind": "methodological", "target": null, "evidence": [{"asset": "source:pmid:37548663", "locator": "sections[21] \"Statistical analysis\" paragraph 2", "quote": "SPSS 22.0 software was used for processing, measurement data in line with normal distribution were expressed as (x±s), t test was used for comparison between two groups, one-way analysis of variance was used for comparison between multiple groups, and LSD-t test was used for pairwise comparison between groups."}], "state": "complete"}, {"id": "claim-data-access", "statement": "All data supporting the article is provided in this article.", "kind": "methodological", "target": null, "evidence": [{"asset": "source:pmid:37548663", "locator": "sections[33] \"notes\" paragraph 1", "quote": "All data supporting the article is provided in this article."}], "state": "complete"}, {"id": "claim-target-result", "statement": "Puerarin, ferroptosis, and osteoarthritis share four targets: PLIN2, PTGS2, VEGFA, and IL6.", "kind": "qualitative", "target": null, "evidence": [{"asset": "source:pmid:37548663", "locator": "sections[0] \"Abstract\" paragraph 1", "quote": "Puerarin, ferroptosis, and osteoarthritis share four targets: PLIN2, PTGS2, VEGFA, and IL6."}], "state": "complete"}], "gaps": []}, "experiment": {"state": "complete", "objective": "Puerarin, ferroptosis, and osteoarthritis share four targets: PLIN2, PTGS2, VEGFA, and IL6.", "steps": [{"id": "read_published_estimate", "order": 1, "name": "Read the published estimate from the source", "kind": "other", "state": "complete", "blocked_on": null, "description": "The claim, method and evidence span published with the source article.", "duration_hours": null, "parameters": {}, "inputs": ["source:pmid:37548663"], "outputs": ["the published estimate and its evidence"], "instruments": [], "reagents": []}, {"id": "obtain_source_data", "order": 2, "name": "Obtain the source data from the named repository", "kind": "data-preparation", "state": "complete", "blocked_on": null, "description": "The GEO series accession resolves and its sample accessions are listed. 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