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28 July 2019 : Laboratory Research  

Discovery of the Anti-Tumor Mechanism of Calycosin Against Colorectal Cancer by Using System Pharmacology Approach

Chen Huang12BCF, Rong Li3BDE, Wuxiang Shi4ADG*, Zhaoquan Huang4ADEG

DOI: 10.12659/MSM.918250

Med Sci Monit 2019; 25:5589-5593

Abstract

BACKGROUND: The aim of our study was to elucidate the biological targets and pharmacological mechanisms for calycosin (CC) against colorectal cancer (CRC) through an approach of system pharmacology.

MATERIAL AND METHODS: Using a web-based platform, all CRC-causing genes were identified using a database of gene-disease associations (DisGeNET), and all well-known genes of CC identified using the databases of prediction of protein targets of small molecules (Swiss Target Prediction), drug classification, and target prediction (SuperPred). The carefully selected genes of CRC and CC were concurrently constructed by using a database of functional protein association networks (STRING), and use of software for visualizing complex networks (Cytoscape), characterized with production of protein-protein interaction (PPI) network of CC against CRC. The important biological targets of CC against CRC were identified through topological analysis, then the biological processes and molecular pathways of CC against CRC were further revealed for testing these important biotargets by enrichment assays.

RESULTS: We found that the key predictive targets of CC against CRC were estrogen receptor 2 (ESR2), ATP-binding cassette sub-family G member 2 (ABCG2), breast cancer type 1 susceptibility protein (BRCA1), estrogen receptor 1 (ESR1), cytochrome p450 19A1 (CYP19A1), and epidermal growth factor receptor (EGFR). Visual analysis revealed that the biological processes of CC against CRC were positively linked to hormonal metabolism, regulation of genes, transport, cell communication, and signal transduction. Further, the interrelated molecular pathways were chiefly related to endogenous nuclear estrogen receptor alpha network, forkhead box protein A1 (FOXA1) transcription factor network, activating transcription factor 2 (ATF2) transcription factor network, regulation of telomerase, plasma membrane estrogen receptor signaling, estrogen biosynthesis, androgen receptor, FOXA transcription factor networks, estrogen biosynthesis, and phosphorylation of repair proteins.

CONCLUSIONS: Use of system pharmacology revealed the biotargets, biological processes, and pharmacological pathways of CC against CRC. Intriguingly, the identifiable predictive biomolecules are likely potential targets for effectively treating CRC.

Keywords: Colorectal Neoplasms, Defense Mechanisms, Pharmacology, Clinical, Phytoestrogens, ATP Binding Cassette Transporter, Subfamily G, Member 2, aromatase, BRCA1 Protein, Biomarkers, Tumor, Colonic Neoplasms, Computational Biology, Databases, Genetic, ErbB receptors, Estrogen Receptor alpha, Estrogen Receptor beta, Gene Expression Profiling, Gene Regulatory Networks, Isoflavones, Neoplasm Proteins, Pharmacological and Toxicological Phenomena, Protein Interaction Maps, Systems Analysis

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750