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Updated: Nov 10, 2025
Generation and Expansion of Primary, Malignant Pleural Mesothelioma Tumor Lines
Published on: April 21, 2022
Identification of Overexpressed Genes in Malignant Pleural Mesothelioma
Federica Morani1, Luisa Bisceglia1, Giulia Rosini1
1Department of Biology, University of Pisa, 56126 Pisa, Italy.
Abstract:
Malignant pleural mesothelioma (MPM) is a fatal tumor lacking effective therapies. The characterization of overexpressed genes could constitute a strategy for identifying drivers of tumor progression as targets for novel therapies. Thus, we performed an integrated gene-expression analysis on RNAseq data of 85 MPM patients from TCGA dataset and reference samples from the GEO. The gene list was further refined by using published studies, a functional enrichment analysis, and the correlation between expression and patients' overall survival. Three molecular signatures defined by 15 genes were detected. Seven genes were involved in cell adhesion and extracellular matrix organization, with the others in control of the mitotic cell division or apoptosis inhibition. Using Western blot analyses, we found that ADAMTS1, PODXL, CIT, KIF23, MAD2L1, TNNT1, and TRAF2 were overexpressed in a limited number of cell lines. On the other hand, interestingly, CTHRC1, E-selectin, SPARC, UHRF1, PRSS23, BAG2, and MDK were abundantly expressed in over 50% of the six MPM cell lines analyzed. Thus, these proteins are candidates as drivers for sustaining the tumorigenic process. More studies with small-molecule inhibitors or silencing RNAs are fully justified and need to be undertaken to better evaluate the cancer-driving role of the targets herewith identified.
Insights
Researchers identified key genes overexpressed in malignant pleural mesothelioma (MPM), a fatal cancer. These findings offer potential new therapeutic targets for this challenging disease.
Area of Science:
- Oncology
- Molecular Biology
- Genomics
Background:
- Malignant pleural mesothelioma (MPM) is an aggressive cancer with limited treatment options.
- Identifying overexpressed genes in MPM can reveal novel therapeutic targets.
- Gene expression profiling is crucial for understanding tumor progression and developing targeted therapies.
Purpose of the Study:
- To identify and characterize overexpressed genes in malignant pleural mesothelioma (MPM) as potential therapeutic targets.
- To refine a gene list through integrated analysis of patient data, functional enrichment, and survival correlations.
- To validate the expression of candidate genes in MPM cell lines.
Main Methods:
- Integrated gene-expression analysis of RNA sequencing data from 85 MPM patients (TCGA) and GEO datasets.
- Refinement of gene lists using published studies, functional enrichment analysis, and correlation with patient overall survival.
- Validation of protein overexpression in six MPM cell lines using Western blot analysis.
Main Results:
- Three molecular signatures comprising 15 genes were identified in MPM.
- Seven genes are associated with cell adhesion and extracellular matrix organization; others regulate cell division or apoptosis.
- CTHRC1, E-selectin, SPARC, UHRF1, PRSS23, BAG2, and MDK were highly expressed in over 50% of analyzed MPM cell lines.
Conclusions:
- Several overexpressed genes, including CTHRC1, E-selectin, SPARC, UHRF1, PRSS23, BAG2, and MDK, are potential drivers of MPM tumorigenesis.
- These identified proteins represent promising candidates for targeted therapeutic strategies against MPM.
- Further research using small-molecule inhibitors or silencing RNAs is warranted to evaluate the identified targets' roles in cancer progression.
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