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Updated: Jan 15, 2026
An Orthotopic Model of Serous Ovarian Cancer in Immunocompetent Mice for in vivo Tumor Imaging and Monitoring of Tumor Immune Responses
Published on: November 28, 2010
Immunocompetent C57BL/6 syngeneic mouse ovarian cancer models with defined genetic alterations
Hasmik Agadjanian1, Beth Y Karlan2,3, Christine S Walsh1,4
1Women's Cancer Program, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
Abstract:
Ovarian cancer remains one of the deadliest gynecologic cancers globally, with limited progress in early detection and treatment. Syngeneic mouse ovarian cancer cell lines, derived from immunocompetent mice, have become essential tools for studying ovarian cancer biology and assessing novel therapies. With the rise of immunotherapies such as immune checkpoint inhibitors and cancer vaccines, these syngeneic models are critical for preclinical studies within the context of an intact immune system. The availability of diverse syngeneic ovarian cancer models ensures that research captures the full spectrum of human ovarian cancer variability, including variations in genetic mutations, signaling pathways, tumor antigenicity, and molecular subtypes. Here, we report the development and characterization of a panel of syngeneic ovarian cancer cell lines with defined combinations of initiating genetic alterations, such as TP53 deficiency, Hras mutation, and overexpression of Myc and Cyclin E. The Introduction of one or two oncogene drivers resulted in TP53-/- cell transformation and growth in nude and immunocompetent syngeneic C57BL/6 mice. Intraperitoneal tumors grew with high penetrance and had a wide metastatic distribution and concurrent ascites, which closely resembles the clinical picture of human serous ovarian cancer.
Insights
Researchers developed new mouse models for ovarian cancer research. These syngeneic models mimic human disease, aiding the study of immunotherapies and improving early detection strategies.
Area of Science:
- Oncology
- Immunology
- Genetics
Background:
- Ovarian cancer is a leading cause of cancer death with limited early detection.
- Syngeneic mouse models are crucial for studying ovarian cancer biology and immunotherapy preclinical research.
- Diverse models are needed to reflect human ovarian cancer's heterogeneity.
Purpose of the Study:
- To develop and characterize a panel of syngeneic ovarian cancer cell lines.
- To incorporate specific genetic alterations found in human ovarian cancer.
- To create models that closely mimic human serous ovarian cancer presentation.
Main Methods:
- Generated syngeneic ovarian cancer cell lines with defined genetic alterations (TP53 deficiency, Hras mutation, Myc/Cyclin E overexpression).
- Introduced oncogene drivers into TP53-/- cells for transformation.
- Assessed cell transformation and tumor growth in nude and immunocompetent C57BL/6 mice.
Main Results:
- Engineered cell lines exhibited transformation and growth upon oncogene driver introduction.
- Intraperitoneal tumors showed high penetrance in mice.
- Tumors displayed extensive metastasis and ascites, mirroring human ovarian cancer.
Conclusions:
- The developed syngeneic ovarian cancer models accurately recapitulate human disease characteristics.
- These models are valuable tools for preclinical immunotherapy research.
- Further research with these models can advance ovarian cancer detection and treatment.
