| Objective: As a characteristic Mongolian medicine,Parnassia palustris has been recorded in ancient books and modern literature of Mongolian medicine.The primordial plant of Parnassia palustris is Parnassia palustris L.and its dried whole plant is used as medicine.The efficacy of Parnassia palustris in Mongolian medicine includes breaking the lumps and removing stagnation,removing Xieri,and detoxifying and removing heat.At present,Parnassia palustris is mainly used to treat liver and blood lumps,viscera Xieri and thermal lumps.The chemical components and blood components of the Parnassia palustris were analyzed by liquid chromatography-mass spectrometry(LC-MS)in order to preliminarily clarify the pharmacodynamic material basis of the Parnassia palustris.The mechanism of anti-hepatoma action of Parnassia palustris is predicted through the "active component-target-pathway" network pharmacological technology.The mechanism of action of the main active components of Parnassia palustris was further analyzed by molecular docking technology,providing scientific reference for the application and research of Parnassia palustris in the future.The content of the main active components in Parnassia palustris was analyzed and determined by high performance liquid chromatography(HPLC),which provided a basis for the evaluation of the quality of Parnassia palustris.Methods: The water extract and medicated serum of Parnassia palustris were prepared respectively,and the mass spectrum information of the water extract and blood components of Parnassia palustris was obtained by LC-MS detection and analysis.The above components detected in Parnassia palustris were matched and compared,and the chemical components of Parnassia palustris were analyzed.Based on the ingredients,the Swiss Target Prediction database and the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP)were used to screen the targets of the active ingredients of Parnassia palustris.Disease targets of liver cancer were collected through disease target screening databases such as Online Mendelian Inheritance in Man(OMIM),Gene Cards database,Pharmacogenomics and Pharmacogenomics Knowledge Base(pharm GKB).The cross target of the active ingredient of Sycamore and liver cancer will be screened by Wayne Venny 2.1 online tool.After the target protein-protein interaction networks(PPI)diagram is drawn through STRING database and Cytoscape 3.8.2 software,important targets are screened through the topological network analysis of Cyto NCA plug-in.The screened targets are imported into the Database for Annotation,Visualization and Integrated Discovery(DAVID),Gene Ontology(GO)and Genome Encyclopedia of Genes and Genomes(KEGG)to complete the pathway enrichment analysis.In the PPI network,the components with higher scores were selected as small molecular ligands,and then the important targets with higher ranking were selected.The affinity between the active components and the key targets of Parnassia palustris was verified.The molecular docking technology was used to preliminarily reveal the mechanism of the anti-hepatoma effect of Mongolian Medicine Parnassia palustris.According to the chemical composition and enrollment composition of the clover,combined with the active ingredients predicted by the network pharmacology,the content determination of the active ingredients of the clover was studied by HPLC technology,and the identification and general inspection of the clover were carried out with reference to the Chinese Pharmacopoeia 2020.Results: A total of 30 components were identified from the water extract of Parnassia palustris,and 68 components were identified from the medicated serum of Parnassia palustris,including 20 prototype components and 48 metabolites.Through the analysis of network pharmacology technology,a total of 28 active components and 881 corresponding component targets were selected from Parnassia palustris,including 17923 targets for liver cancer,825 common targets for Parnassia palustris and liver cancer,and 71 key targets were selected through analysis.Through enrichment analysis,it was found that the anti-hepatoma mechanism of Parnassia palustris involves biological processes,cell components and molecular functions.A total of 162 pathways were enriched,among which the top three signal pathways were cancer pathway,human cytomegalovirus infection pathway and hepatitis B pathway.Through molecular docking,The binding efficiency between quercetin,kaempferol,catechin,hyperoside and gallic acid,the active components of Parnassia palustris and the key target of tyrosine protein kinase(SRC),mitogen-activated protein kinase 3(MAPK3),heat shock protein 90AA1(HSP90AA1)phosphatidylinositol-3-kinase 1(PIK3R1)and phosphatidylinositol-4,5-bisphosphoinositol-3-kinase(PIK3CA)were very low.The active components of Parnassia palustris can directly bind to the active site of the key target protein,and form 1-6 hydrogen bonds with some amino acid residues at the active site,with the length of hydrogen bonds between 1-4 ?.The above results fully reflect the high affinity of the active components of Parnassia palustris to the key targets.The quercetin and kaempferol in Parnassia palustris were studied through TLC identification and HPLC content determination.At the same time,in combination with the properties and microscopic identification,general inspection and extracts of Parnassia palustris,a relatively complete quality standard of the Mongolian medicine Parnassia palustris was formulated.Conclusion: The material basis of the efficacy and the possible mechanism of the treatment of liver cancer of Parnassia palustris have been preliminarily clarified,and the quality evaluation method of Parnassia palustris has been established.The above results can provide a reference for the further research and development of the Mongolian medicine Parnassia palustris. |
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