Identification of candidate genes for myeloma-induced osteocyte death based on microarray data

Area of Science:

• Molecular Biology
• Genomics
• Oncology

Background:

• Osteocyte death is a critical factor in multiple myeloma (MM) pathogenesis.
• Understanding the molecular mechanisms underlying osteocyte apoptosis in MM is essential for developing targeted therapies.

Purpose of the Study:

• To investigate the molecular mechanisms of osteocyte death in multiple myeloma (MM) patients.
• To identify differentially expressed genes (DEGs) and their functional roles in MM-induced osteocyte apoptosis.

Main Methods:

• Gene expression data (GSE27372) from osteocyte cell line (HOB-01) co-cultured with MM cell line (JJN3) was analyzed.
• Differentially expressed genes (DEGs) were identified using Student's t test, followed by enrichment analyses (DAVID software) and functional annotation (TRANSFAC, TSGene, TAG databases).
• Protein-protein interaction (PPI) network and sub-network analyses were performed using STRING and Cytoscape.

Main Results:

• A total of 393 DEGs were identified, including 22 transcription factors and 37 tumor-associated genes (TAGs).
• Enrichment analysis highlighted EGF, S1PR1, and NPY1R in circulatory system development.
• EGF and EGR1 showed high interaction degrees in the PPI network, while S1PR1, C3AR1, and NPY1R interacted within a sub-network.

Conclusions:

• The identified DEGs may play a role in myeloma-induced osteocyte apoptosis.
• These findings provide a potential theoretical basis for understanding osteolysis in MM patients and developing novel therapeutic strategies.