基于网络药理学研究淫羊藿抗骨质疏松的分子机制

Study on the molecular mechanism of osteoporosis treated by Epimedium based on network pharmacology

目的基于网络药理学探讨淫羊藿可能的物质基础,并分析淫羊藿抗骨质疏松可能的分子机制。方法采用活性成分筛选、靶点预测技术,结合生物信息学手段,确定淫羊藿防治骨质疏松症的特异性靶点,并进行信号通路富集分析,以进一步分析其治疗骨质疏松症的分子机制。结果淫羊藿在TCMSP数据库中共检索到130个相应成分,根据OB和DL参数共筛选到23个入血活性成分,同时利用相关靶点预测技术,共获得101个预测靶点。通过对GEO芯片数据库的基因芯片进行二次挖掘分析,共获取124个明显的差异基因;在疾病基因相关数据库共检索到356个与骨质疏松症发生、发展密切相关的已知的相关靶点基因。利用cytoscape构建并合并活性成分及疾病的蛋白质相互作用关系网络,通过网络拓扑分析共筛选出221个关键基因;Clue GO富集分析显示,淫羊藿除与直接作用于骨质疏松症关键节点涉及的信号通路,如Wnt信号通路、TGF-β信号通路、Notch信号通路等有关,还对PI3K-Akt信号通路、VEGF信号通路、甲状腺素信号通路等同时进行调控。结论淫羊藿治疗骨质疏松症具有多成分、多靶点的特点;其主要通路不仅直接参与骨重建的细胞分化,调节成骨、破骨代谢平衡,还通过全身其他系统,如循环系统、神经系统等来干预和影响骨微环境,与目前抗骨质疏松的作用机制相符合。

Aim To investigate the potential molecular basis of Epimedium and to clarify the molecular mechanism of Epimedium in the treatment of osteoporosis.Methods The method of network pharmacology was used to determine and screen the known compounds corresponding to Epimedium,and predict the drug-related gene/protein targets,and combined with bioinformatics,the specific target of osteoporosis prevention and treatment of Epimedium was determined,and then the signal pathway enrichment was analysed,the molecular mechanism of Epimedium in treatment of osteoporosis was further explored. Results A total of 130 corresponding compounds were retrieved in the TCMID database from Epimedium. According to the values of OB and DL,23 blood transfusion components were screened,in which 101 targets were obtained using the related target prediction technique. Through the secondary mining of the gene chip of GEO chip database,we obtained a total of 124 significantly different genes.And a total of 355 known target genes closely related to the development of osteoporosis were retrieved in the disease-related database. Using the cytoscape to construct and synthesize the protein-protein interaction network of active ingredients and diseases,221 key genes were screened out by network topological analysis. Using Clue GO analysis,it was shown that Epimedium was directly engaged in the signal pathways involved in the key nodes of osteoporosis,which were mainly related to the direct regulation of bone metabolism,such as Wnt signaling pathway,TGF-β signaling pathway and Notch signaling pathway,and that Epimedium regulated other signal pathways,such as PI3 KAkt signaling pathway,VEGF signaling pathway and thyroid hormone signaling pathway. Conclusions Epimedium has the characteristics of multiple targets and multicomponent in the treatment of osteoporosis,which could not only be directly involved in bone cell differentiation and regulation of the balance of osteogenesis and osteoclasts,but also affect and interfere with the bone microenvironment through other systemic systems,such as circulatory system,nervous system,which is consistent with the current mechanism of treatment of osteoporosis.