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Śliwa A, Kubiczak M, Szczerba A, Walkowiak G, Nowak-Markwitz E, Burczyńska B, Butler S, Iles R, Białas P, Jankowska A. Regulation of human chorionic gonadotropin beta subunit expression in ovarian cancer. BMC Cancer 2019; 19:746. [PMID: 31362717 PMCID: PMC6664497 DOI: 10.1186/s12885-019-5960-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 07/19/2019] [Indexed: 12/20/2022] Open
Abstract
PURPOSE Expression of human chorionic gonadotropin beta subunit by cancers is extensively documented, yet regulation of the multiple genes that can code for this protein is poorly understood. The aim of the study was to examine the mechanisms regulating CGB gene expression in ovarian cancer. METHODS Expression of CGB genes and SP1, SP3, TFAP2A transcription factor genes was evaluated by RT-qPCR. The methylation status of CGB genes promoter regions was examined by methylation-specific PCR. RESULTS mRNA arising from multiple CGB genes was detected in both ovarian control and malignant tissues. However, expression of CGB3-9 genes was shown to be significantly higher in malignant than healthy ovarian tissues. CGB1 and CGB2 transcripts were shown to be present in 20% of ovarian cancers, but were not detected in any of the control samples. Malignant tissues were characterized by DNA demethylation of CGB promoter regions. In ovarian cancer CGB expression positively correlated with TFAP2A transcripts level and expression of TFAP2A transcription factor was significantly higher in cancer than in control tissues. In contrast SP3 expression level was significantly lower in ovarian tumours than in control ovarian tissue. CONCLUSIONS In ovarian cancers increased expression of human chorionic gonadotropin beta subunit is associated with demethylation of CGB promoter regions. CGB3-9 expression level strongly correlates with expression of the TFAP2A transcription factor. Presence of mRNA arising from CGB1 and CGB2 genes appears to be a unique feature of a subset of ovarian cancers.
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Affiliation(s)
- Aleksandra Śliwa
- Department of Cell Biology, Poznan University of Medical Sciences, 5D Rokietnicka Street, 60-806, Poznan, Poland.
| | - Marta Kubiczak
- Department of Cell Biology, Poznan University of Medical Sciences, 5D Rokietnicka Street, 60-806, Poznan, Poland
| | - Anna Szczerba
- Department of Cell Biology, Poznan University of Medical Sciences, 5D Rokietnicka Street, 60-806, Poznan, Poland
| | - Grzegorz Walkowiak
- Department of Cell Biology, Poznan University of Medical Sciences, 5D Rokietnicka Street, 60-806, Poznan, Poland
| | - Ewa Nowak-Markwitz
- Gynaecologic Oncology Department, Poznan University of Medical Sciences, 33 Polna Street, 60-101, Poznan, Poland
| | - Beata Burczyńska
- Centre for Investigative and Diagnostic Oncology, Middlesex University, The Burroughs, London, NW4 4BT, UK
| | - Stephen Butler
- MAP Diagnostics Ltd, The iLAB, Stannard Way, Bedford, Bedfordshire, MK44 3RZ, UK
| | - Ray Iles
- MAP Diagnostics Ltd, The iLAB, Stannard Way, Bedford, Bedfordshire, MK44 3RZ, UK.,College of Health, Abu Dhabi University, Abu Dhabi, United Arab Emirates
| | - Piotr Białas
- Department of Cell Biology, Poznan University of Medical Sciences, 5D Rokietnicka Street, 60-806, Poznan, Poland
| | - Anna Jankowska
- Department of Cell Biology, Poznan University of Medical Sciences, 5D Rokietnicka Street, 60-806, Poznan, Poland
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Troppmann B, Kleinau G, Krause G, Gromoll J. Structural and functional plasticity of the luteinizing hormone/choriogonadotrophin receptor. Hum Reprod Update 2013; 19:583-602. [DOI: 10.1093/humupd/dmt023] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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't Hart BA, Abbott DH, Nakamura K, Fuchs E. The marmoset monkey: a multi-purpose preclinical and translational model of human biology and disease. Drug Discov Today 2012; 17:1160-5. [PMID: 22728226 DOI: 10.1016/j.drudis.2012.06.009] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 05/31/2012] [Accepted: 06/13/2012] [Indexed: 01/13/2023]
Abstract
The development of biologic molecules (monoclonal antibodies, cytokines, soluble receptors) as specific therapeutics for human disease creates a need for animal models in which safety and efficacy can be tested. Models in lower animal species are precluded when the reagents fail to recognize their targets, which is often the case in rats and mice. In this Feature article we will highlight the common marmoset, a small-bodied nonhuman primate (NHP), as a useful model in biomedical and preclinical translational research.
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Affiliation(s)
- Bert A 't Hart
- Department of Immunobiology, Biomedical Primate Research Centre, Rijswijk, The Netherlands.
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