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Integrated network pharmacology and experimental validation to explore the potential pharmacological mechanism of Qihuang Granule and its main ingredients in regulating ferroptosis in AMD

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机构: [1]Department of Ophthalmology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 111DaDe Road, Guangzhou, Guangdong, 510120, China. [2]Department of Ophthalmology, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
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关键词: Age-related maculopathy (AMD) Ferroptosis Oxidative stress Traditional Chinese medicine formula Network pharmacology

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Qihuang Granule (QHG) is a traditional prescription  that has exhibited potential in safeguarding against age-related maculopathy (AMD). Salvia miltiorrhiza (SM) and Fructus lycii (FL) are the main components of QHG. Ferroptosis, a newly discovered, iron-dependent, regulated cell death pathway, have been implicated in the pathogenesis of AMD. This study delves into the intricate mechanism by which SM/FL and QHG confer protection against AMD by modulating the ferroptosis pathway, employing a combination of network pharmacology and experimental validation.Bioactive compounds and potential targets of SM and FL were gathered from databases such as TCMSP, GeneCard, OMIM, and FerrDb, along with AMD-related genes and key genes responsible for ferroptosis regulation. Gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis and protein-protein interaction (PPI) network were performed to discover the potential mechanism. The construction of an interaction network involving AMD, ferroptosis, SM/FL potential target genes was facilitated by the STRING database and realized using Cytoscape software. Subsequent validation was accomplished through molecular docking and in vitro cell experiments.Noteworthy active compounds including quercetin, tanshinone IIA, luteolin, cryptotanshinone, and hub targets such as HIF-1α, EGFR, IL6, and VEGFA were identified. KEGG enrichment unveiled the HIF-1 signalling pathway as profoundly enriched, and IL6 and VEGF were involved. The molecular docking revealed the significant active compounds with hub genes and quercetin showed good binding to HIF-1α, which is involved in inflammation and angiogenesis. Experimental results verified that both herbs and QHG could regulate key ferroptosis-related targets in the retinal pigment epithelium and inhibit the expression of HIF-1α, VEGFA, and IL-6, subsequently increase cell viability and decrease the ROS content induced by H2O2.This study demonstrates the molecular mechanism through which SM/FL and QHG protect against AMD and emerges as a plausible mechanism underlying this protection.© 2023. The Author(s).

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出版当年[2022]版:
大类 | 3 区 医学
小类 | 2 区 全科医学与补充医学
最新[2025]版:
大类 | 3 区 医学
小类 | 2 区 全科医学与补充医学
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出版当年[2021]版:
Q2 INTEGRATIVE & COMPLEMENTARY MEDICINE
最新[2023]版:
Q1 INTEGRATIVE & COMPLEMENTARY MEDICINE

影响因子: 最新[2023版] 最新五年平均 出版当年[2021版] 出版当年五年平均 出版前一年[2020版] 出版后一年[2022版]

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第一作者机构: [1]Department of Ophthalmology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 111DaDe Road, Guangzhou, Guangdong, 510120, China.
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