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This study identifies key genes and potential drug targets for breast cancer (BC) using gene expression analysis. HMOX1 is highlighted as a promising target for developing new breast cancer therapies.

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Area of Science:

  • Oncology
  • Bioinformatics
  • Computational Biology

Background:

  • Breast cancer (BC) is a leading cause of cancer death in women, necessitating novel therapeutic strategies.
  • Current BC classification relies on biomarkers like HER2, ER, and PR, but further targets are needed.
  • Network-based gene expression profiling offers a powerful approach to discover new therapeutic targets in complex diseases like BC.

Purpose of the Study:

  • To identify novel differentially expressed genes (DEGs) and hub genes in breast cancer.
  • To explore potential therapeutic agents and pharmacological targets for BC treatment.
  • To investigate the role of identified genes in BC initiation and progression.

Main Methods:

  • Statistical analysis (p-values, FDR) to identify DEGs.
  • Survival and expression analyses to evaluate hub gene significance.
  • Enrichment analysis, kinase/transcription factor identification, and protein-protein interaction (PPI) network analysis.
  • Computational drug discovery including molecular docking, simulation, and binding free energy calculations (MMPBSA/MMGBSA).

Main Results:

  • Identified 123 DEGs in BC, with 101 downregulated and 11 upregulated.
  • Confirmed the crucial role of hub genes in BC initiation and progression.
  • Discovered potential pharmaceuticals targeting identified hub genes, with HMOX1 (Heme Oxygenase 1) showing particular promise.
  • Validated high binding affinities and stability of novel compounds with HMOX1 through molecular dynamics and binding energy calculations.

Conclusions:

  • Network-based gene expression analysis effectively identifies critical biomarkers and therapeutic targets in breast cancer.
  • HMOX1 is a promising target for developing novel breast cancer therapeutics.
  • Computational drug discovery methods confirm the potential of identified compounds for targeting HMOX1, enhancing understanding of BC biomarkers.