Exploration of the mechanism of Qizhi Jiangtang Capsule in the treatment of diabetic nephropathy based on network pharmacology and molecular docking technology
Objective:To explore the pharmacological mechanism of Qizhi Jiangtang Capsule in the treatment of dia-betic nephropathy(DN)by network pharmacology and molecular docking technology.Methods:Coremine Medical data-base was used to search the related diseases treated with Qizhi Jiangtang Capsule to verify the rationality of the prescription.The chemical components of each single Chinese herb in Qizhi Jiangtang Capsule were retrieved from TCMSP,TCM data base@Taiwan and TCMID databases,and combined with the literature,137 active ingredients were screened by"five prin-ciples of similar drugs".The possible targets of active ingredients were obtained through HitPick,Similarity ensemble ap-proach and SwissTargetPrediction analysis platform.The DN-related targets were obtained from OMIM,GenCards and Dis-GeNET databases.By taking the intersection of the possible targets and DN-related targets,127 common targets were ob-tained.Common targets were mapped to diseases via the GCBI database to verify their importance in DN.Cytoscape software was used to construct the active ingredient-target network of Qizhi Jiangtang Capsule,and the STRING platform was used to construct the interaction network between the active ingredient target-DN target of Qizhi Jiangtang Capsule.DAVID soft-ware was used to perform GO functional analysis and KEGG pathway enrichment analysis of the common targets.Molecular docking of core compounds and core targets was performed based on the relevant node parameters of compounds and pro-teins as well as literature reports.Results:Qizhi Jiangtang Capsule mainly acted on the targets of ALB,IL6,VEGFA,TNF and Akt1,and participated in HIF-1,TNF and Toll-like receptor signaling pathways in the treatment of DN.The core ac-tive ingredients of Qizhi Jiangtang Capsule,ferulic acid,quercetin,verbascoside,caffeic acid and formononetin,had good affinity with the core targets ALB,IL6,VEGFA,TNF and Akt1.Conclusion:Qizhi Jiangtang Capsule may improve renal tissues and vascular pathological injury by regulating oxidative stress,inflammatory response,apoptosis,immune regula-tion,etc.,thus playing a role in the treatment of DN.
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