ArticleCurrent topics in medicinal chemistry2026
Gene Expression Profiling to Unveil Novel Biomarkers for Early Diagnosis and Therapies for Breast Cancer.
Article in Current topics in medicinal chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionBreast cancer (BC) is a leading cause of cancer-related death worldwide. Early detection and accurate diagnosis can improve patient outcomes and survival rates. Thus, identifying drugs and biomarkers for early detection is necessary for diagnosis, prognosis, and treatment. MATERIALS AND
methodsUsing machine learning techniques, we identified 160 differentially expressed genes (DEGs) between BC and control samples from four microarray datasets (GSE26910, GSE3744, GSE29431, and GSE42568), which were adopted due to the frequent presence of outliers in microarray gene-expression datasets, stemming from multiple stages in the data generation processes. Through protein-protein interaction network analysis, 10 DEGs (FN1, CXCL10, CD34, PECAM1, PTGS2, CXCL12, JUN, EGFR, CD36, and CAV1) were selected as pivotal Hub genes (HubGs) as potential biomarkers for BC.
resultsWe validated the expression profiles of hub genes (HubGs) in breast cancer (BC) and control samples using box plot analysis based on data from the TCGA and GTEx databases. The identified HubGs demonstrated strong prognostic potential, as shown by Kaplan-Meier survival analyses and performance in a random forest prediction model. Regulatory network analysis revealed that HubG activity is modulated at a limited number of transcriptional and posttranscriptional stages. Functional enrichment analysis highlighted key molecular functions, cellular components, biological processes, and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways associated with BC pathogenesis and linked to these HubGs. Finally, molecular docking studies targeting HubG-mediated receptors led to the identification of seven top-ranked candidate drugs-Olaparib, Tucatinib, Telmisartan, Danazol, Troglitazone, Abemaciclib, and Lapatinib- proposed for potential BC treatment. DISCUSSION: In this study, we identified 10 critical differentially expressed genes (cDEGs)- CD34, PECAM1, PTGS2, CXCL12, JUN, EGFR, CD36, CAV1, FN1, and CXCL10-as pivotal hub genes (HubGs) involved in breast cancer (BC). These HubGs were determined through protein- protein interaction (PPI) network analysis of 160 cDEGs derived from four independent microarray datasets. Functional enrichment analysis revealed that these HubGs are associated with key biological processes, cellular components, molecular functions, and pathways relevant to BC progression. Furthermore, we identified three top-ranked transcription factors (BRCA1, STAT3, and TP53) and three microRNAs (hsa-miR-16-5p, hsa-miR-155-5p, and hsa-miR-23b-3p) as crucial regulators of HubGs, acting at both transcriptional and post-transcriptional levels.
conclusionThe stability of the top three receptor-ligand complexes was validated through molecular dynamics simulations. Therefore, our findings could be a valuable resource for researchers and medical professionals, aiding in BC diagnosis and treatment.
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