基于“增效减毒”策略探究酸枣仁缓解苯二氮类药物依赖性的作用机制

The mechanism of Zizyphi Spinosae Semen in relieving benzodiazepine dependence based on the strategy of“enhancing efficacy and reducing toxicity”

目的基于“增效减毒”的中药和化学药物联用思路,采用网络药理学方法与分子动力学模拟技术,探讨酸枣仁缓解苯二氮类药物(benzodiazepine,BDZ)依赖性的活性成分及分子机制。方法首先通过文献检索酸枣仁的主要成分,其次基于网络药理学和分子对接探讨酸枣仁缓解BDZ依赖性的主要有效成分及作用靶点。最后通过分子动力学模拟技术进一步验证关键蛋白和核心成分之间的关系。结果酸枣仁共检索出24个化学成分,共作用于731个靶点。通过构建“成分-靶点-通路”网络,拓扑分析得到亚油酸、棕榈酸、油酸、豆蔻酸、斯皮诺素、齐墩果酸、酸枣仁皂苷A等9个核心成分和AR、PTGS2、PPARG、RXRA和CYP19A15个关键靶点。KEGG富集分析得到钙离子信号通路、cAMP信号通路、IL-17信号通路和TNF信号通路等关键通路。分子对接结果表明酸枣仁核心成分和关键靶点之间有着良好的结合能力且结合主要以氢键为主。分子动力学模拟实验进一步表明Jujuboside-A和RXRA、Oleanolic-acid和RXRA、Spinosin和PPARGC结合稳定,三种活性成分对改善BDZ依赖性有重要作用。结论酸枣仁中的活性成分可能通过免疫调节、抗焦虑、抗失眠等过程,发挥多靶点、多通路干预BDZ依赖性的作用。

Objective To investigate the active ingredients of Zizyphi Spinosae Semen(ZSS)in relieving benzodiazepine(BDZ)dependence and its molecular mechanism based on the integrated Traditional Chinese Medicine and chemical drugs idea of“enhancing effect and reducing toxicity”via the approach of network pharmacology and the technique of molecular dynamics simulation.Methods First,literature search was undertaken to find the main components of ZSS.Then,the major effective constituents of ZSS in relieving BDZ dependence and its target of action were explored on the basis of network pharmacology and molecular docking.Finally,the relationship between core components of ZSS and key proteins was further verified through the technique of molecular dynamics simulation.Results After literature search,a total of 24 chemical components in ZSS were found to act on 731 targets.Through establishing the network of“ingredients-targets-pathways”,topology analysis was performed to obtain nine core components such as linoleic acid,palmitic acid,oleic acid,tetradecanoic acid,spinosin,oleanolic acid and jujuboside A,as well as five key targets including AR,PTGS2,PPARG,RXRA and CYP19A1.Bioinformation enrichment analysis was made to obtain critical pathways such as calcium signaling pathway,cAMP signaling pathway,IL-17 signaling pathway and TNF signaling pathway.The results of molecular docking revealed that there was a good combination between core components of ZSS and key targets,and it was mainly dominated by hydrogen bonding.Furthermore,the molecular dynamics simulation experiments indicated that the combinations between jujuboside A and RXRA,oleanolic acid and RXRA,spinosin and PPARG were stable,and these three active ingredients played an important role in improving BDZ dependence.Conclusion The active components in ZSS may exert multi-target and multi-pathway intervention effects on BDZ dependence by means of processes such as immunoregulation,anti-anxiety,and anti-insomnia.