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Updated: Apr 4, 2026
Heterotypic Three-dimensional In Vitro Modeling of Stromal-Epithelial Interactions During Ovarian Cancer Initiation and Progression
Published on: August 28, 2012
Suboptimal cytoreduction in ovarian carcinoma is associated with molecular pathways characteristic of increased
Zhenqiu Liu1, Jessica A Beach2, Hasmik Agadjanian3
1Biostatistics and Bioinformatics Research Center, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
Objective:
Suboptimal cytoreductive surgery in advanced epithelial ovarian cancer (EOC) is associated with poor survival but it is unknown if poor outcome is due to the intrinsic biology of unresectable tumors or insufficient surgical effort resulting in residual tumor-sustaining clones. Our objective was to identify the potential molecular pathway(s) and cell type(s) that may be responsible for suboptimal surgical resection.
Methods:
By comparing gene expression in optimally and suboptimally cytoreduced patients, we identified a gene network associated with suboptimal cytoreduction and explored the biological processes and cell types associated with this gene network.
Results:
We show that primary tumors from suboptimally cytoreduced patients express molecular signatures that are typically present in a distinct molecular subtype of EOC characterized by increased stromal activation and lymphovascular invasion. Similar molecular pathways are present in EOC metastases, suggesting that primary tumors in suboptimally cytoreduced patients are biologically similar to metastatic tumors. We demonstrate that the suboptimal cytoreduction network genes are enriched in reactive tumor stroma cells rather than malignant tumor cells.
Conclusion:
Our data suggest that the success of cytoreductive surgery is dictated by tumor biology, such as extensive stromal reaction and increased invasiveness, which may hinder surgical resection and ultimately lead to poor survival.
Insights
Suboptimal cytoreductive surgery in advanced epithelial ovarian cancer (EOC) is linked to poor survival. Tumor biology, specifically increased stromal activation and invasiveness, appears to dictate surgical success rather than surgical effort alone.
Area of Science:
- Gynecologic Oncology
- Surgical Oncology
- Molecular Biology
Background:
- Suboptimal cytoreductive surgery in advanced epithelial ovarian cancer (EOC) correlates with reduced patient survival.
- The reasons for suboptimal resection remain unclear, with debate on whether it stems from tumor biology or surgical limitations.
Purpose of the Study:
- To identify molecular pathways and cell types contributing to suboptimal surgical resection in EOC.
- To elucidate the biological factors influencing the success of cytoreductive surgery.
Main Methods:
- Comparative gene expression analysis between optimally and suboptimally cytoreduced EOC patients.
- Identification of gene networks associated with suboptimal cytoreduction.
- Exploration of biological processes and cell types within these networks.
Main Results:
- Suboptimally resected tumors exhibit molecular signatures similar to a distinct EOC subtype characterized by stromal activation and lymphovascular invasion.
- These molecular pathways are also observed in metastatic EOC, suggesting primary tumors in these patients resemble metastatic disease.
- Genes linked to suboptimal cytoreduction are predominantly found in reactive tumor stroma cells, not malignant cells.
Conclusions:
- Tumor biology, including extensive stromal reaction and invasiveness, significantly influences the success of cytoreductive surgery in EOC.
- These biological factors may impede complete surgical resection, contributing to poorer patient outcomes.
- The findings highlight the critical role of intrinsic tumor characteristics in surgical outcomes for advanced EOC.
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