[关键词]
[摘要]
目的 通过超高效液相色谱-高分辨率质谱 (UPLC-HRMS) 技术结合网络药理学与体外实验探究藤梨根 对胃癌前病变 (PLGC) 的治疗作用及其潜在分子机制。方法 以 UPLC-HRMS 技术结合中药活性成分数据库获 取藤梨根水提物中的中药活性成分,并使用 SwissTargetPrediction 数据库对作用靶点进行预测;利用 GeneCards 和 OMIM 数据库检索得到胃癌前病变相关靶点;通过 Cytoscape 3.10.3 构建“成分-靶点-疾病网络”,并通过蛋 白相互作用(PPI)网络筛选核心靶点;运用 AutoDock 软件进行关键成分与核心靶点的分子对接并使用 GROMACS 软件进行分子动力学模拟验证关键成分与核心靶点的结合稳定性。在体外实验部分,通过 1-甲基-3- 硝基-1-亚硝基胍 (MNNG) 诱导人胃黏膜细胞 GES-1 细胞建立胃癌前病变细胞模型,通过 CCK-8、细胞划痕、 免疫荧光及活性氧检测、平板克隆等实验评估藤梨根对胃癌前病变细胞增殖、迁移及凋亡的影响。结果 通过 UPLC-HRMS 技术从藤梨根中鉴定出 83 种化合物 (其中 59 种符合活性筛选标准) ;网络药理学及 PPI 分析确定 了包括 RACα 丝氨酸/苏氨酸蛋白激酶 (AKT1) 、RACβ 丝氨酸/苏氨酸蛋白激酶 (AKT2) 等在内的 40 个核心靶 点;分子对接与动力学模拟显示如异黄腐酚与 AKT2 等关键成分与核心靶点结合稳定;细胞实验结果表明,与 正常对照组比,当藤梨根给药浓度 ≥ 3 mg·mL-1 时,胃癌前病变细胞的存活率被明显抑制 (P<0.01) ;藤梨根 1、2、3 mg·mL-1 均能明显抑制该细胞的迁移能力 (P<0.01) ;当给药浓度 ≥ 2 mg·mL-1 时,可明显诱导细胞凋亡 (P<0.01) ;此外,不同剂量的藤梨根处理均可明显升高细胞内活性氧水平 (P<0.05,P<0.01) 。结论 藤梨根 可以通过多成分、多靶点调控机制对胃癌前病变发挥治疗作用,对胃癌前病变模型细胞具有抑制作用。
[Key word]
[Abstract]
Objective To explore the therapeutic effects and underlying molecular mechanisms of Actinidia chinensis Radix (ACR) on gastric precancerous lesions (PLGC) using ultra-performance liquid chromatography-high-resolution mass spectrometry (UPLC-HRMS), network pharmacology, and in vitro experiments. Methods UPLC-HRMS combined with traditional Chinese medicine (TCM) active ingredient databases was employed to identify bioactive components in ACR aqueous extracts. SwissTargetPrediction was used to predict potential targets,while PLGC-related targets were retrieved from GeneCards and OMIM databases. A "component-target-disease" network was constructed using Cytoscape 3.10.3, and core targets were screened via protein-protein interaction (PPI) network analysis. Molecular docking (AutoDock) and molecular dynamics simulations (GROMACS) were performed to validate binding stability between key components and core targets. For in vitro validation,a PLGC cell model was established by treating human gastric mucosal GES-1 cells with N-methyl-N-nitro-N-nitrosoguanidine (MNNG) . The anti-PLGC effects of ACR were assessed via CCK-8,wound healing,immunofluorescence,reactive oxygen species (ROS) detection,and colony formation assays. Results UPLC-HRMS analysis identified 83 compounds in ACR,among which 59 met the criteria for bioactive screening. Network pharmacology and PPI analysis identified 40 core targets, including AKT1 (RAC-alpha serine/threonine-protein kinase) and AKT2 (RAC-beta serine/threonine-protein kinase) . Molecular docking and dynamics simulations confirmed stable binding interactions between key active components (e.g., isoxanthohumol) and core targets (e.g.,AKT2) . In cell experiments,compared with the normal control group,ACR at concentrations ≥ 3 mg·mL-1 significantly inhibited the viability of gastric precancerous lesion cells (P<0.01) . All tested concentrations (1,2,and 3 mg·mL-1 ) markedly suppressed cell migration ability (P<0.01) . When the concentration reached ≥ 2 mg·mL-1 ,ACR significantly induced cell apoptosis (P<0.01) . Furthermore,treatment with various doses of ACR consistently elevated intracellular reactive oxygen species levels (P<0.05,P<0.01) . Conclusion ACR exerts anti-PLGC effects via multi-component,multi-target mechanisms,inhibiting proliferation,migration,and survival of PLGC cells.
[中图分类号]
R285.5
[基金项目]
广州中医药大学中医学学科中医基础理论研究“揭榜挂帅”项目;广东省中医院科学技术研究专项 (YN2024MS035) ;省部共建中医 湿证国家重点实验室科研项目(SZ2023ZZ02);广东省中医证候临床研究重点实验室开放课题(2023KT15507);国家自然科学基金项目 (82474361) ;广州中医药大学大学-医院联合基金项目 (GZYSE2024U05) 。