基于UPLC-Q-TOF-MS结合网络药理学与实验验证探讨健脾消癌方治疗结直肠癌作用机制

Discussion on the Mechanism of Jianpi Xiaoai Prescription in the Treatment of Colorectal Cancer Based on UPLC-Q-TOF-MS Combined with Network Pharmacology and Experimental Verification

目的探讨健脾消癌方的活性成分及其治疗结直肠癌(CRC)的作用机制。方法采用超高效液相色谱-四极杆飞行时间串联质谱(UPLC-Q-TOF-MS)技术鉴定健脾消癌方化学成分;通过TCMSP、SwissTargetPrediction数据库筛选活性成分及靶蛋白,STRING数据库进行蛋白相互作用分析,GeneCards数据库筛选CRC相关靶点,DAVID数据库进行GO和KEGG通路富集分析;对主要活性成分与关键靶点进行分子对接验证;构建CRC裸鼠模型,采用Western blot检测健脾消癌方对裸鼠CRC相关通路关键靶点的影响。结果筛选得到健脾消癌方活性成分35个,潜在作用靶点617个,与CRC相关靶点的交集靶点325个。活性成分作用靶点富集分析表明,主要富集在PI3K-Akt信号通路、EGFR酪氨酸激酶抑制、癌症中的蛋白多糖、T细胞受体信号通路、VEGF信号通路等相关通路。得到健脾消癌方作用于CRC的13个关键活性成分和6个关键靶蛋白EGFR、SRC、CA2、CA12、CYP19A1、MAPK3。Western blot实验结果表明,健脾消癌方可显著降低大鼠CRC样本中SRC、EGFR蛋白表达水平。结论健脾消癌方中活性成分可能通过调控EGFR、SRC,多靶点、多途径发挥抗CRC细胞增殖、侵袭及转移的作用。

Objective To explore the active components of Jianpi Xiaoai Prescription and its mechanism in the treatment of colorectal cancer(CRC).Methods UPLC-Q-TOF-MS technology was used to identify the chemical components of Jianpi Xiaoai Prescription;Active components and target proteins were screened through TCMSP and SwissTargetPrediction databases;STRING database was used for protein interaction analysis;The GeneCards database was used to screen CRC-related targets;DAVID database was used for GO and KEGG pathway enrichment analysis;Molecular docking verification of main active components and key targets was conducted.A rat model of CRC was constructed,and the effect of Jianpi Xiaoai Prescription on key targets of CRC-related pathways in rats was verified by Western blot.Results Totally 35 active components of Jianpi Xiaoai Prescription,617 potential targets,and 325 intersected with CRC-related targets were obtained.The enrichment analysis of active component targets showed that the main enrichments were PI3K-Akt signaling pathway,EGFR tyrosine kinase inhibitors signaling pathway,T cell receptor signaling pathway,VEGF signaling pathway and other related pathways.13 key active components and 6 key proteins of EGFR,SRC,CA2,CA12,CYP19A1 and MAPK3 were obtained in Jianpi Xiaoai Prescription.The results of Western blot experiments showed that Jianpi Xiaoai Prescription could significantly reduce the protein expression levels of SRC and EGFR in rat CRC samples.Conclusion The active component in Jianpi Xiaoai Prescription may exert anti CRC cell proliferation,invasion,and metastasis effects by regulating EGFR,SRC with multiple targets and pathways.