Cited by 67Ovarian cancer diagnosis and treatmentCancer Cells and MetastasisBRCA gene mutations in cancer

A New Spontaneously Transformed Syngeneic Model of High-Grade Serous Ovarian Cancer with a Tumor-Initiating Cell Population

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McCloskey, Curtis W., Goldberg, Reuben L., Carter, Lauren E., Gamwell, Lisa F., Al-Hujaily, Ensaf M., Collins, Olga, Macdonald, Elizabeth A., Garson, Kenneth +3 more·2014·Frontiers in Oncology

Abstract

Improving screening and treatment options for patients with epithelial ovarian cancer has been a major challenge in cancer research. Development of novel diagnostic and therapeutic approaches, particularly for the most common subtype, high-grade serous ovarian cancer (HGSC), has been hampered by controversies over the origin of the disease and a lack of spontaneous HGSC models to resolve this controversy. Over long-term culture in our laboratory, an ovarian surface epithelial (OSE) cell line spontaneously transformed OSE (STOSE). The objective of this study was to determine if the STOSE cell line is a good model of HGSC. STOSE cells grow faster than early passage parental M0505 cells with a doubling time of 13 and 48 h, respectively. STOSE cells form colonies in soft agar, an activity for which M0505 cells have negligible capacity. Microarray analysis identified 1755 down-regulated genes and 1203 up-regulated genes in STOSE compared to M0505 cells, many associated with aberrant Wnt/β-catenin and Nf-κB signaling. Upregulation of Ccnd1 and loss of Cdkn2a in STOSE tumors is consistent with changes identified in human ovarian cancers by The Cancer Genome Atlas. Intraperitoneal injection of STOSE cells into severe combined immunodeficient and syngeneic FVB/N mice produced cytokeratin+, WT1+, inhibin-, and PAX8+ tumors, a histotype resembling human HGSC. Based on evidence that a SCA1+ stem cell-like population exists in M0505 cells, we examined a subpopulation of SCA1+ cells that is present in STOSE cells. Compared to SCA1- cells, SCA1+ STOSE cells have increased colony-forming capacity and form palpable tumors 8 days faster after intrabursal injection into FVB/N mice. This study has identified the STOSE cells as the first spontaneous murine model of HGSC and provides evidence for the OSE as a possible origin of HGSC. Furthermore, this model provides a novel opportunity to study how normal stem-like OSE cells may transform into tumor-initiating cells.

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Authors
McCloskey, C. W., Goldberg, R. L., Carter, L. E., Gamwell, L. F., Al-Hujaily, E. M., Collins, O., Macdonald, E. A., Garson, K., Daneshmand, M., Carmona, E., & Vanderhyden, B. C.
Affiliations
University of Ottawa (CA)
Corresponding author
Vanderhyden, Barbara C.
Venue
Frontiers in Oncology
Published
2014-03-18
Volume
4
Pages
53-53
ISSN
2234-943X (ISSN-L)
OpenAlex
W2108852607
Cited by
67
References
68
Citations by year
2026: 3 · 2025: 3 · 2024: 5 · 2023: 5 · 2022: 6 · 2021: 4 · 2020: 6 · 2019: 10 · 2018: 8 · 2017: 4 · 2016: 6 · 2015: 6 · 2014: 1
FWCI
6.87
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Oncology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Cancer Research Society
  • China Scholarship Council
  • Health Canada
  • Canadian Institutes of Health Research
  • Canadian Cancer Society Research Institute
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Ovarian cancer diagnosis and treatment
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › BRCA gene mutations in cancer
Keywords
high-grade serous ovarian cancer, spontaneous transformation, ovarian surface epithelial cells, cancer stem cells, spinocerebellar ataxia type 1, syngeneic mouse model, Wnt/β-catenin signaling, NF-κB signaling, CCND1, CDKN2A, tumor origin, epithelial ovarian cancer

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