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Updated: Dec 14, 2025
Author Spotlight: Unveiling the Role of TMOD3 in Platinum Resistance and Immune Infiltration in Ovarian Cancer
Published on: August 2, 2024
Potential of platinum-resensitization by Wnt signaling modulators as treatment approach for epithelial ovarian cancer
Till Kaltofen1, Valentina Preinfalk2, Stephanie Schwertler2
1Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Munich, Germany. Till.Kaltofen@med.uni-muenchen.de.
Purpose:
Canonical Wnt/ β-catenin pathway is one mechanism being activated in platinum-resistant epithelial ovarian cancer (EOC). Detecting potential targets for Wnt pathway modulation as a putative future therapeutic approach was the aim of this study.
Methods:
Biological effects of different Wnt modulators (SB216763, XAV939 and triptolide) on the EOC cell lines A2780 and its platinum-resistant clone A2780cis were investigated via multiple functional tests. Immunohistochemistry (IHC) was carried out to compare the expression levels of Wnt marker proteins (β-catenin, snail/ slug, E-cadherin) in patient specimens and to correlate them with lifetime data.
Results:
We could show that activated Wnt signaling of the platinum-resistant EOC cell line A2780cis can be reversed by Wnt manipulators through SB216763 or XAV939. All Wnt manipulators tested consecutively decreased cell proliferation and cell viability. Apoptosis of A2780 and A2780cis was enhanced by triptolide in a dose-dependent manner, whereas cell migration was inhibited by SB216763 and triptolide. IHC analyses elucidated significantly different expression patterns for Wnt markers in the serous subtype. Herein, higher plasmatic snail/ slug expression is associated with improved progression-free (PFS) and overall survival (OS).
Conclusion:
According to the described effects on EOC biology, all three Wnt manipulators seem to have the potential to augment the impact of a platinum-based chemotherapy in EOC. This is promising as a dominance of this pathway was confirmed in serous histology.
Insights
Targeting the Wnt/β-catenin pathway with modulators like SB216763, XAV939, and triptolide can reverse platinum resistance in epithelial ovarian cancer (EOC) and enhance chemotherapy effects.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Therapeutics
Background:
- The Wnt/β-catenin pathway is implicated in platinum-resistant epithelial ovarian cancer (EOC).
- Identifying therapeutic targets within this pathway is crucial for overcoming resistance.
Purpose of the Study:
- To investigate the potential of Wnt pathway modulators as a therapeutic strategy in platinum-resistant EOC.
- To evaluate the effects of SB216763, XAV939, and triptolide on EOC cell lines.
Main Methods:
- Functional assays were used to assess the biological effects of Wnt modulators on EOC cell lines (A2780 and A2780cis).
- Immunohistochemistry (IHC) analyzed Wnt marker protein expression in patient specimens and correlated it with survival data.
Main Results:
- SB216763 and XAV939 reversed Wnt signaling in platinum-resistant EOC cells.
- All tested modulators reduced cell proliferation and viability; triptolide enhanced apoptosis.
- SB216763 and triptolide inhibited cell migration.
- IHC revealed distinct Wnt marker patterns in serous EOC, with higher snail/slug expression correlating with improved progression-free and overall survival.
Conclusions:
- Wnt modulators demonstrate potential to enhance platinum-based chemotherapy efficacy in EOC.
- The Wnt pathway's role in serous histology supports its therapeutic targeting.
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