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Comprehensive bioinformatics analysis of acquired progesterone resistance in endometrial cancer cell line
Wenzhi Li1, Shufen Wang2, Chunping Qiu1
1Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, No. 107 Wenhua Road, Jinan, 250012, Shandong, China.
Background:
Progesterone resistance is a problem in endometrial carcinoma, and its underlying molecular mechanisms remain poorly understood. The aim of this study was to elucidate the molecular mechanisms of progesterone resistance and to identify the key genes and pathways mediating progesterone resistance in endometrial cancer using bioinformatics analysis.
Methods:
We developed a stable MPA (medroxyprogesterone acetate)-resistant endometrial cancer cell subline named IshikawaPR. Microarray analysis was used to identify differentially expressed genes (DEGs) from triplicate samples of Ishikawa and IshikawaPR cells. PANTHER, DAVID and Metascape were used to perform gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis, and cBioPortal for progesterone receptor (PGR) coexpression analysis. GEO microarray (GSE17025) was utilized for validation. The protein-protein interaction network (PPI) and modular analyses were performed using Metascape and Cytoscape. Further validation were performed by real-time polymerase chain reaction (RT-PCR).
Results:
In total, 821 DEGs were found and further analyzed by GO, KEGG pathway enrichment and PPI analyses. We found that lipid metabolism, immune system and inflammation, extracellular environment-related processes and pathways accounted for a significant portion of the enriched terms. PGR coexpression analysis revealed 7 PGR coexpressed genes (ANO1, SOX17, CGNL1, DACH1, RUNDC3B, SH3YL1 and CRISPLD1) that were also dramatically changed in IshikawaPR cells. Kaplan-Meier survival statistics revealed clinical significance for 4 out of 7 target genes. Furthermore, 8 hub genes and 4 molecular complex detections (MCODEs) were identified.
Conclusions:
Using microarray and bioinformatics analyses, we identified DEGs and determined a comprehensive gene network of progesterone resistance. We offered several possible mechanisms of progesterone resistance and identified therapeutic and prognostic targets of progesterone resistance in endometrial cancer.
Insights
This study investigated progesterone resistance in endometrial cancer. Bioinformatics analysis identified key genes and pathways involved in resistance, offering potential therapeutic targets for this condition.
Area of Science:
- Oncology
- Molecular Biology
- Bioinformatics
Background:
- Progesterone resistance is a significant challenge in endometrial carcinoma.
- The molecular mechanisms underlying progesterone resistance are not well understood.
- Identifying these mechanisms is crucial for developing effective treatments.
Purpose of the Study:
- To elucidate the molecular mechanisms of progesterone resistance in endometrial cancer.
- To identify key genes and pathways mediating progesterone resistance.
- To utilize bioinformatics analysis for comprehensive gene network determination.
Main Methods:
- Development of a medroxyprogesterone acetate (MPA)-resistant endometrial cancer cell subline (IshikawaPR).
- Microarray analysis to identify differentially expressed genes (DEGs) between resistant and sensitive cells.
- Bioinformatic analyses including Gene Ontology (GO), KEGG pathway enrichment, coexpression analysis, and protein-protein interaction (PPI) network construction.
Main Results:
- Identified 821 DEGs, with significant enrichment in lipid metabolism, immune system, inflammation, and extracellular environment pathways.
- Discovered 7 progesterone receptor (PGR) coexpressed genes significantly altered in resistant cells, with 4 showing clinical significance.
- Identified 8 hub genes and 4 molecular complex detection modules within the gene network.
Conclusions:
- Bioinformatics analysis successfully identified a comprehensive gene network associated with progesterone resistance in endometrial cancer.
- Several potential mechanisms contributing to progesterone resistance were proposed.
- Identified novel therapeutic and prognostic targets for progesterone resistance in endometrial cancer.
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