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Updated: Jan 18, 2026

Surface-enhanced Resonance Raman Scattering Nanoprobe Ratiometry for Detecting Microscopic Ovarian Cancer via Folate Receptor Targeting
Published on: March 25, 2019
Protease-Activated Receptor F2R Is a Potential Target for New Diagnostic/Prognostic and Treatment Applications for
Riya Khetan1, Noor A Lokman2, Preethi Eldi3
1Centre of Pharmaceutical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia.
Abstract:
Effective treatment of ovarian cancer is limited by late-stage detection and chemotherapy resistance. There is a clinical need for the discovery of novel molecular targets to enable the development of innovative theranostic approaches. We investigated the coagulation factor II receptor/protease-activated receptor 1 (F2R/PAR1) as a potential diagnostic/prognostic biomarker and therapeutic target for ovarian cancer treatment. Public RNA sequence and DNA microarray data were used to analyze F2R gene expression in ovarian cancers, with protein expression confirmed in tumor samples by flow cytometry, immunofluorescence, and immunohistochemistry (IHC). Functional assays were conducted to study effects of F2R suppression on tumor progression. Our analysis confirmed elevated F2R mRNA and protein expression in ovarian cancers, notably in patients with metastatic and chemotherapy-resistant disease. Kaplan-Meier survival analysis demonstrated an association between high F2R protein detection and reduced progression-free survival. F2R suppression in ovarian cancer cell lines reduced tumor cell motility, invasion, spheroid formation, and metabolism and enhanced carboplatin sensitivity. F2R is a compelling diagnostic/prognostic and therapeutic target that could be used to treat chemotherapy-resistant and metastatic disease. The evaluation of novel F2R targeting strategies, using antibody-conjugated drugs or F2R ligand-decorated drug carriers, could lead to the development of effective therapeutics for patients with ovarian cancer.
Insights
Coagulation factor II receptor (F2R) is elevated in ovarian cancers, correlating with metastasis and resistance to chemotherapy. Targeting F2R may offer new theranostic strategies for advanced ovarian cancer.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Ovarian cancer treatment faces challenges due to late detection and chemotherapy resistance.
- Novel molecular targets are crucial for developing advanced theranostic approaches.
Purpose of the Study:
- To investigate the coagulation factor II receptor/protease-activated receptor 1 (F2R/PAR1) as a diagnostic/prognostic biomarker and therapeutic target in ovarian cancer.
Main Methods:
- Analysis of public RNA sequence and DNA microarray data for F2R gene expression.
- Confirmation of F2R protein expression using flow cytometry, immunofluorescence, and immunohistochemistry (IHC).
- Functional assays to assess the impact of F2R suppression on ovarian cancer cell behavior and drug sensitivity.
Main Results:
- Elevated F2R mRNA and protein expression were observed in ovarian cancers, particularly in metastatic and chemotherapy-resistant cases.
- High F2R protein levels were associated with reduced progression-free survival.
- Suppression of F2R decreased tumor cell motility, invasion, spheroid formation, and metabolism, while increasing carboplatin sensitivity.
Conclusions:
- F2R represents a promising diagnostic/prognostic biomarker and therapeutic target for ovarian cancer.
- Targeting F2R could lead to novel theranostic strategies for chemotherapy-resistant and metastatic ovarian cancer.
- Further research into F2R-targeting therapies, such as antibody-drug conjugates, is warranted.
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