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Beaufort CM, Helmijr JCA, Piskorz AM, Hoogstraat M, Ruigrok-Ritstier K, Besselink N, Murtaza M, van IJcken WFJ, Heine AAJ, Smid M, Koudijs MJ, Brenton JD, Berns EMJJ, Helleman J. Ovarian cancer cell line panel (OCCP): clinical importance of in vitro morphological subtypes. PLoS One 2014; 9:e103988. [PMID: 25230021 PMCID: PMC4167545 DOI: 10.1371/journal.pone.0103988] [Citation(s) in RCA: 299] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 07/05/2014] [Indexed: 12/19/2022] Open
Abstract
Epithelial ovarian cancer is a highly heterogeneous disease and remains the most lethal gynaecological malignancy in the Western world. Therapeutic approaches need to account for inter-patient and intra-tumoural heterogeneity and detailed characterization of in vitro models representing the different histological and molecular ovarian cancer subtypes is critical to enable reliable preclinical testing. There are approximately 100 publicly available ovarian cancer cell lines but their cellular and molecular characteristics are largely undescribed. We have characterized 39 ovarian cancer cell lines under uniform conditions for growth characteristics, mRNA/microRNA expression, exon sequencing, drug response for clinically-relevant therapeutics and collated all available information on the original clinical features and site of origin. We tested for statistical associations between the cellular and molecular features of the lines and clinical features. Of the 39 ovarian cancer cell lines, 14 were assigned as high-grade serous, four serous-type, one low-grade serous and 20 non-serous type. Three morphological subtypes: Epithelial (n = 21), Round (n = 7) and Spindle (n = 12) were identified that showed distinct biological and molecular characteristics, including overexpression of cell movement and migration-associated genes in the Spindle subtype. Comparison with the original clinical data showed association of the spindle-like tumours with metastasis, advanced stage, suboptimal debulking and poor prognosis. In addition, the expression profiles of Spindle, Round and Epithelial morphologies clustered with the previously described C1-stromal, C5-mesenchymal and C4 ovarian subtype expression profiles respectively. Comprehensive profiling of 39 ovarian cancer cell lines under controlled, uniform conditions demonstrates clinically relevant cellular and genomic characteristics. This data provides a rational basis for selecting models to develop specific treatment approaches for histological and molecular subtypes of ovarian cancer.
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Affiliation(s)
- Corine M. Beaufort
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Jean C. A. Helmijr
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Anna M. Piskorz
- Functional Genomics of Ovarian Cancer Laboratory, Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Cambridge, United Kingdom
| | - Marlous Hoogstraat
- Department of Medical Oncology and Center for Personalized Cancer Treatment, University Medical Center Utrecht, Utrecht The Netherlands
| | | | - Nicolle Besselink
- Department of Medical Oncology and Center for Personalized Cancer Treatment, University Medical Center Utrecht, Utrecht The Netherlands
| | - Muhammed Murtaza
- Molecular and Computational Diagnostics Laboratory, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | | | - Anouk A. J. Heine
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Marcel Smid
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Marco J. Koudijs
- Department of Medical Oncology and Center for Personalized Cancer Treatment, University Medical Center Utrecht, Utrecht The Netherlands
| | - James D. Brenton
- Functional Genomics of Ovarian Cancer Laboratory, Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Cambridge, United Kingdom
| | - Els M. J. J. Berns
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Jozien Helleman
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
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Gloss BS, Patterson KI, Barton CA, Gonzalez M, Scurry JP, Hacker NF, Sutherland RL, O'Brien PM, Clark SJ. Integrative genome-wide expression and promoter DNA methylation profiling identifies a potential novel panel of ovarian cancer epigenetic biomarkers. Cancer Lett 2011; 318:76-85. [PMID: 22155104 DOI: 10.1016/j.canlet.2011.12.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 11/11/2011] [Accepted: 12/02/2011] [Indexed: 12/12/2022]
Abstract
To identify epigenetic-based biomarkers for diagnosis of ovarian cancer we performed MeDIP-Chip in A2780 and CaOV3 ovarian cancer cell lines. Validation by Sequenom massARRAY methylation analysis confirmed a panel of six gene promoters (ARMCX1, ICAM4, LOC134466, PEG3, PYCARD & SGNE1) where hypermethylation discriminated 27 serous ovarian cancer clinical samples versus 12 normal ovarian surface epithelial cells (OSE) (ROC of 0.98). Notably, CpG sites across the transcription start site of a potential long-intergenic non-coding RNA (lincRNA) gene (LOC134466), was shown to be hypermethylated in 81% of serous EOC and could differentiate tumours from OSE (p<0.05). We propose that this potential biomarker panel holds great promise as a diagnostic test for high-grade (Type II) serous ovarian cancer.
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Affiliation(s)
- Brian S Gloss
- Cancer Research Program, The Garvan Institute of Medical Research, 384 Victoria St., Darlinghurst, New South Wales 2010, Australia
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