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Mohr A, Lüder Ripoli F, Hammer SC, Willenbrock S, Hewicker-Trautwein M, Kiełbowicz Z, Murua Escobar H, Nolte I. Hormone Receptor Expression Analyses in Neoplastic and Non-Neoplastic Canine Mammary Tissue by a Bead Based Multiplex Branched DNA Assay: A Gene Expression Study in Fresh Frozen and Formalin-Fixed, Paraffin-Embedded Samples. PLoS One 2016; 11:e0163311. [PMID: 27649560 PMCID: PMC5029807 DOI: 10.1371/journal.pone.0163311] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 09/07/2016] [Indexed: 11/18/2022] Open
Abstract
Immunohistochemistry (IHC) is currently considered the method of choice for steroid hormone receptor status evaluation in human breast cancer and, therefore, it is commonly utilized for assessing canine mammary tumors. In case of low hormone receptor expression, IHC is limited and thus is complemented by molecular analyses. In the present study, a multiplex bDNA assay was evaluated as a method for hormone receptor gene expression detection in canine mammary tissues. Estrogen receptor (ESR1), progesterone receptor (PGR), prolactin receptor (PRLR) and growth hormone receptor (GHR) gene expressions were evaluated in neoplastic and non-neoplastic canine mammary tissues. A set of 119 fresh frozen and 180 formalin-fixed, paraffin-embedded (FFPE) was comparatively analyzed and used for assay evaluation. Furthermore, a possible association between the hormone receptor expression in different histological subtypes of canine malignant mammary tumors and the castration status, breed and invasive growth of the tumor were analyzed. The multiplex bDNA assay proved to be more sensitive for fresh frozen specimens. Hormone receptor expression found was significantly decreased in malignant mammary tumors in comparison to non-neoplastic tissue and benign mammary tumors. Among the histological subtypes the lowest gene expression levels of ESR1, PGR and PRLR were found in solid, anaplastic and ductal carcinomas. In summary, the evaluation showed that the measurement of hormone receptors with the multiplex bDNA assay represents a practicable method for obtaining detailed quantitative information about gene expression in canine mammary tissue for future studies. Still, comparison with IHC or quantitative real-time PCR is needed for further validation of the present method.
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MESH Headings
- Animals
- Biomarkers, Tumor/genetics
- Branched DNA Signal Amplification Assay
- Carcinoma, Ductal/genetics
- Carcinoma, Ductal/metabolism
- Carcinoma, Ductal/pathology
- Carcinoma, Ductal/veterinary
- Dog Diseases/genetics
- Dog Diseases/metabolism
- Dog Diseases/pathology
- Dogs
- Female
- Gene Expression
- Mammary Neoplasms, Animal/genetics
- Mammary Neoplasms, Animal/metabolism
- Mammary Neoplasms, Animal/pathology
- Paraffin Embedding
- Receptors, Estrogen/genetics
- Receptors, Estrogen/metabolism
- Receptors, Progesterone/genetics
- Receptors, Progesterone/metabolism
- Receptors, Prolactin/genetics
- Receptors, Prolactin/metabolism
- Receptors, Somatotropin/genetics
- Receptors, Somatotropin/metabolism
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Affiliation(s)
- Annika Mohr
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
- Division of Medicine Clinic III, Hematology, Oncology and Palliative Medicine, University of Rostock, Rostock, Germany
| | - Florenza Lüder Ripoli
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
- Division of Medicine Clinic III, Hematology, Oncology and Palliative Medicine, University of Rostock, Rostock, Germany
| | - Susanne Conradine Hammer
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
- Division of Medicine Clinic III, Hematology, Oncology and Palliative Medicine, University of Rostock, Rostock, Germany
| | - Saskia Willenbrock
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | | | - Zdzisław Kiełbowicz
- Department and Clinic of Veterinary Surgery, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Wrocław, Poland
| | - Hugo Murua Escobar
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
- Division of Medicine Clinic III, Hematology, Oncology and Palliative Medicine, University of Rostock, Rostock, Germany
| | - Ingo Nolte
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
- * E-mail:
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Hall JS, Usher S, Byers RJ, Higgins RC, Memon D, Radford JA, Linton KM. QuantiGene Plex Represents a Promising Diagnostic Tool for Cell-of-Origin Subtyping of Diffuse Large B-Cell Lymphoma. J Mol Diagn 2015; 17:402-11. [DOI: 10.1016/j.jmoldx.2015.03.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 03/03/2015] [Accepted: 03/11/2015] [Indexed: 01/01/2023] Open
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Kim NH, Lim HY, Im KS, Shin JI, Kim HW, Sur JH. Evaluation of Clinicopathological Characteristics and Oestrogen Receptor Gene Expression in Oestrogen Receptor-negative, Progesterone Receptor-positive Canine Mammary Carcinomas. J Comp Pathol 2014; 151:42-50. [DOI: 10.1016/j.jcpa.2014.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Revised: 02/17/2014] [Accepted: 04/10/2014] [Indexed: 12/23/2022]
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Kim TJ, Lee A, Choi YJ, Song BJ, Yim HW, Kang CS. Prognostic Significance of High Expression of ER-beta in Surgically Treated ER-Positive Breast Cancer Following Endocrine Therapy. J Breast Cancer 2012; 15:79-86. [PMID: 22493632 PMCID: PMC3318179 DOI: 10.4048/jbc.2012.15.1.79] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Accepted: 02/28/2012] [Indexed: 11/30/2022] Open
Abstract
PURPOSE This study evaluated estrogen receptor (ER)-beta mRNA and ER-beta protein expression and its prognostic implications in hormone receptor-positive breast cancer. METHODS Paraffin sections from 139 hormone receptor-positive breast cancer cases were prepared. The expression of ER-beta mRNA and protein were analyzed by branched-chain assay and immunohistochemistry (IHC), respectively. RESULTS The Allred score of ER-beta IHC was correlated with smaller tumor size (p=0.043), the Allred score of ER-alpha IHC (p<0.001), and the Allred score of progesterone receptor (PR) IHC (p=0.022) but not with the HER2 IHC score. ER-beta mRNA level was correlated with PR mRNA levels (p<0.001) but not with the Allred score of ER-beta IHC, ER-alpha IHC, and PR IHC, nor with the HER2 IHC score and ER-alpha mRNA level. In survival analysis, high expression of ER-beta mRNA was associated with worse disease-free survival along with poor differentiation, lymph node metastasis and absence of PR protein expression in univariate analysis (p=0.040, p=0.002, p=0.018, and p=0.007, respectively) and multivariate analysis (p=0.044, p=0.002, p=0.035, and p=0.007, respectively). CONCLUSION High expression of ER-beta mRNA is an independent predictor of disease recurrence in hormone-receptor-positive breast cancer.
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Affiliation(s)
- Tae-Jung Kim
- Department of Hospital Pathology, The Catholic University of Korea College of Medicine, Seoul, Korea
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Abstract
AIM The QuantiGene2.0 assay has low interlaboratory variability and can directly measure RNA levels without a reverse transcription step or a polymerase chain reaction process. To evaluate the utility of the QuantiGene2.0 assay for the assessment of oestrogen receptor (ER) and progesterone receptor (PR) status as an alternative to immunohistochemistry (IHC), we compared disease-free survival according to quantitative ER and PR measurements when using IHC and the QuantiGene2.0 assay. METHODS Samples were collected from 171 patients who underwent breast cancer surgery between January 2003 and December 2006. Cox proportional hazard analysis was performed and concordance between IHC and the QuantiGene2.0 assay for the assessment of ER and PR status was evaluated. RESULTS ER and PR assessments were well correlated between IHC and the QuantiGene2.0 assay. The difference in disease-free survival was statistically significant according to expression of PR, but not ER, between the two groups. CONCLUSIONS The QuantiGene2.0 assay showed results similar to those of IHC for the assessment of ER and PR in response to treatment. Therefore, our data suggest that the QuantiGene2.0 assay can be used to determine ER and PR status and corroborate IHC findings, which at present are considered as the standard for the evaluation of ER and PR status.
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