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Canadas-Sousa A, Santos M, Dias-Pereira P. Protective Effect of HER2 Gene Polymorphism rs24537331 in the Outcome of Canine Mammary Tumors. Animals (Basel) 2023; 13:ani13081384. [PMID: 37106947 PMCID: PMC10135387 DOI: 10.3390/ani13081384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/11/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
The role of HER2 in canine mammary tumors is not completely elucidated, and the contradictory results published so far may be, in part, explained by the genetic variability recognized in the canine HER2 gene. Single nucleotide polymorphism (SNPs) in HER2 were recently associated with less aggressive canine mammary tumor histotypes. This study assesses the relationship between SNPs rs24537329 and rs24537331 in canine HER2 gene and clinicopathological characteristics and outcome of mammary tumors in a group of 206 female dogs. Allelic variants were observed in 69.8% and 52.7% of the dogs for SNP rs24537329 and rs24537331, respectively. Our results demonstrated that SNP rs24537331 was associated with decreased tumoral necrosis (HR: 3.09; p = 0.012) and with longer disease-specific overall survival (HR: 2.59; p = 0.013). However, no statistically significant associations were found between SNP rs24537329 and the tumors' clinicopathological characteristics or survival. Our data suggest that SNP rs24537331 may have a protective effect in canine mammary tumors, allowing the identification of a subgroup of animals prone to develop less aggressive forms of the disease. This study emphasizes the importance of the genetic tests associated with clinical images and histological examinations when assessing CMT outcomes.
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Affiliation(s)
- Ana Canadas-Sousa
- Department of Pathology and Molecular Immunology, Instituto de Ciências Biomédicas Abel Salazar, ICBAS-UP, University of Porto, 4050-313 Porto, Portugal
| | - Marta Santos
- Department of Microscopy, Instituto de Ciências Biomédicas Abel Salazar, ICBAS-UP, University of Porto, 4050-313 Porto, Portugal
| | - Patrícia Dias-Pereira
- Department of Pathology and Molecular Immunology, Instituto de Ciências Biomédicas Abel Salazar, ICBAS-UP, University of Porto, 4050-313 Porto, Portugal
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Canadas-Sousa A, Santos M, Medeiros R, Dias-Pereira P. Single Nucleotide Polymorphism in Prolactin Gene Is Associated With Clinical Aggressiveness and Outcome of Canine Mammary Malignant Tumors. Vet Pathol 2021; 58:1051-1057. [PMID: 34121513 DOI: 10.1177/03009858211022705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Prolactin (PRL) is a key hormone involved in canine mammary development and tumorigenesis. In this study, the influence of a single nucleotide polymorphism (SNP) in the PRL gene (rs23932236) on the clinicopathological parameters and survival of dogs with canine mammary tumors (CMTs) was investigated. A total of 206 female dogs with spontaneous mammary tumors were enrolled in this study and circulating blood cells were genotyped. This specific SNP was associated with larger size (>3 cm diameter) for malignant tumors (P = .036), tumors with infiltrative/invasive growth pattern (P = .010), vascular invasion (P = .006), and lymph node metastasis (P = .004). Carriers of the variant allele had a shorter overall survival compared to the wild-type population with an overall survival of 18.7 months and 22.7 months, respectively (P = .004). These findings suggest that SNP rs23932236 of canine PRL gene may be used as an indicator for the development of clinically aggressive forms of CMTs.
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Affiliation(s)
- Ana Canadas-Sousa
- Instituto Ciências Biomédicas Abel Salazar, ICBAS, UPorto, 89239University of Porto, Porto, Portugal
| | - Marta Santos
- Instituto Ciências Biomédicas Abel Salazar, ICBAS, UPorto, 89239University of Porto, Porto, Portugal
| | - Rui Medeiros
- Molecular Oncology and Viral Pathology Group, 59035IPO-Porto Research Center, Portuguese Oncology Institute of Porto, Porto, Portugal
| | - Patrícia Dias-Pereira
- Instituto Ciências Biomédicas Abel Salazar, ICBAS, UPorto, 89239University of Porto, Porto, Portugal
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Canadas-Sousa A, Santos M, Medeiros R, Dias-Pereira P. Single Nucleotide Polymorphisms Influence Histological Type and Grade of Canine Malignant Mammary Tumours. J Comp Pathol 2019; 172:72-79. [DOI: 10.1016/j.jcpa.2019.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 08/12/2019] [Accepted: 08/23/2019] [Indexed: 01/07/2023]
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Canadas-Sousa A, Santos M, Leal B, Medeiros R, Dias-Pereira P. Estrogen receptors genotypes and canine mammary neoplasia. BMC Vet Res 2019; 15:325. [PMID: 31506083 PMCID: PMC6734279 DOI: 10.1186/s12917-019-2062-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 08/25/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Estrogens are essential for the development and proper function of several hormone-dependent organs. There are, however, several lines of evidence associating estrogens with mammary carcinogenesis. A marked individual genetic variability concerning estrogens biosynthesis, metabolism and mechanism of action was recognized and associated with human breast cancer susceptibility, clinical features and progression. Although some genetic variations in canine ESR1 gene were reported, their influence in clinicopathological features and progression of canine mammary tumors has not been fully evaluated. This study aims to assess the influence of SNPs in ESR1 gene (rs397512133, rs397510462, rs851327560, rs397510612, rs852887655, rs852684753 and rs852398698) in canine mammary tumors characteristics and progression. A group of 155 non-neutered bitches with mammary tumors was included in the study. Follow-up information was assessed 24 months after surgery. RESULTS Genetic profiles associated with a later onset of mammary tumors and less aggressive clinicopathological features, namely smaller tumor size (≤ 3 cm) with extensive tubular differentiation and low canine-adapted prognostic index (vet-NPI), were identified in this study. CONCLUSIONS Our data suggest that the ESR1 genetic profile may help on the decision regarding the selection of individual tailored preventive measures against canine mammary tumors development, such as early neutering.
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Affiliation(s)
- Ana Canadas-Sousa
- Department of Pathology and Molecular Immunology, Instituto Ciências Biomédicas Abel Salazar, ICBAS - UPorto, University of Porto, Porto, Portugal.
| | - Marta Santos
- Department of Microscopy, Instituto Ciências Biomédicas Abel Salazar, ICBAS - UPorto, University of Porto, Porto, Portugal
| | - Bárbara Leal
- Department of Pathology and Molecular Immunology, Instituto Ciências Biomédicas Abel Salazar, ICBAS - UPorto, University of Porto, Porto, Portugal
| | - Rui Medeiros
- Molecular Oncology and Viral Pathology Group, IPO-Porto Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO-Porto), Porto, Portugal
| | - Patrícia Dias-Pereira
- Department of Pathology and Molecular Immunology, Instituto Ciências Biomédicas Abel Salazar, ICBAS - UPorto, University of Porto, Porto, Portugal
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Canadas A, Santos M, Pinto R, Medeiros R, Dias-Pereira P. Catechol-o-methyltransferase genotypes are associated with progression and biological behaviour of canine mammary tumours. Vet Comp Oncol 2018; 16:664-669. [DOI: 10.1111/vco.12438] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/26/2018] [Accepted: 07/30/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Ana Canadas
- Department of Pathology and Molecular Immunology, Instituto Ciências Biomédicas Abel Salazar, ICBAS-UPorto; University of Porto; Porto Portugal
| | - Marta Santos
- Department of Microscopy, Instituto Ciências Biomédicas Abel Salazar, ICBAS-UPorto; University of Porto; Porto Portugal
| | - Ricardo Pinto
- Molecular Oncology and Viral Pathology Group; IPO-Porto Research Centre, Portuguese Institute of Oncology of Porto (IPO-Porto); Porto Portugal
| | - Rui Medeiros
- Molecular Oncology and Viral Pathology Group; IPO-Porto Research Centre, Portuguese Institute of Oncology of Porto (IPO-Porto); Porto Portugal
- Faculty of Medicine; University of Porto; Porto Portugal
- FP-ENAS Research Unit, UFP Energy, Environment and Health Research Unit, CEBIMED, Biomedical Research Centre; University Fernando Pessoa; Porto Portugal
- LPCC, Research Department; Portuguese League Against Cancer (LPPC-NRN); Porto Portugal
| | - Patrícia Dias-Pereira
- Department of Pathology and Molecular Immunology, Instituto Ciências Biomédicas Abel Salazar, ICBAS-UPorto; University of Porto; Porto Portugal
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Sak K. The Val158Met polymorphism in COMT gene and cancer risk: role of endogenous and exogenous catechols. Drug Metab Rev 2016; 49:56-83. [PMID: 27826992 DOI: 10.1080/03602532.2016.1258075] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Catechol-O-methyltransferase, COMT, is an important phase II enzyme catalyzing the transfer of a methyl-group from S-adenosylmethionine to a catechol-containing substrate molecule. A genetic variant Val158Met in the COMT gene leads to a several-fold decrease in the enzymatic activity giving rise to the accumulation of potentially carcinogenic endogenous catechol estrogens and their reactive intermediates and increasing thus the risk of tumorigenesis. However, numerous association studies between the COMT genotype and susceptibility to various malignancies have shown inconsistent and controversial findings indicating that additional gene-gene and gene-environment interactions might be crucial in modulating the physiological role of the COMT. In this review article, the important contribution of dietary catechol-containing flavonoids to modification of the relationships between the COMT genotype and cancer risk is discussed. Whereas, the diverse anticancer activities of common phytochemicals, such as green tea polyphenols, quercetin, fisetin or luteolin, can be markedly changed (both decreased or increased) by the COMT-mediated O-methylation of these exogenous substrates, flavonoids can also behave as potent inhibitors of the COMT enzyme slowing detoxification of endogenous catechol estrogens. Such a many-featured functioning of the COMT and its complex regulation by several different genetic and environmental factors, including plant-based food ingredients, emphasizes the necessity to further stratify the association studies between the COMT genotype and tumor risk by consumption of catechol-containing dietary flavonoids. Currently, it can be only speculated that some of the possible associations might be masked by the regular intake of specific food polyphenols, taking effect in certain communities or populations.
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Affiliation(s)
- Katrin Sak
- a Department of Hematology and Oncology , Institute of Clinical Medicine, University of Tartu , Tartu , Estonia
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Luo J, Gao YT, Chow WH, Shu XO, Li H, Yang G, Cai Q, Rothman N, Cai H, Shrubsole MJ, Franke AA, Zheng W, Dai Q. Urinary polyphenols and breast cancer risk: results from the Shanghai Women's Health Study. Breast Cancer Res Treat 2009; 120:693-702. [PMID: 19653095 DOI: 10.1007/s10549-009-0487-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Accepted: 07/18/2009] [Indexed: 12/27/2022]
Abstract
Polyphenols, the most abundant dietary antioxidants, also possess many other anticarcinogenic activities. Urinary metabolites of polyphenols could complement dietary assessment of the bioavailability of these nutrients. We conducted a study of 353 incident breast cancer cases and 701 individually matched controls nested within the Shanghai Women's Health Study cohort of women aged 40-70 years at baseline. Liquid chromatography photo-diode array electrospray mass spectrometry was used to measure tea polyphenols (epicatechin, epigallocatechin, and their metabolites) and flavonols (e.g., quercetin and kaempferol). Multivariate conditional logistic regression analyses were used to assess associations between breast cancer risk and urinary excretion rates of polyphenols. Urinary excretion of tea polyphenols increased with increasing tea leaves consumed among controls, but not among breast cancer cases. Compared with cases, controls had higher levels of urinary total polyphenols and tea polyphenols, particularly epicatechin. In contrast, we did not find any dose-response relationship between urinary polyphenols and breast cancer risk. Urinary excretion of epicatechin was inversely associated with breast cancer risk [odds ratio (OR) and 95% confidence interval (CI) of 0.59 (0.39-0.88) for the intermediate tertile]. In spline regression, we found an overall dose-response relationship between epicatechin level and risk of breast cancer, although it was not apparent in low and middle urinary excretion range. In conclusion, high epicatechin may be related to a reduced risk of breast cancer. Further studies are warranted to confirm our findings.
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Affiliation(s)
- Jianfeng Luo
- Department of Medicine, Vanderbilt Epidemiology Center, Institute for Medicine and Public Health, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN 37203-1738, USA
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Pereira PD, Lopes CC, Matos AJF, Pinto D, Gärtner F, Lopes C, Medeiros R. Influence of Catechol-O-Methyltransferase (COMT) Genotypes on the Prognosis of Canine Mammary Tumors. Vet Pathol 2009; 46:1270-4. [DOI: 10.1354/vp.08-vp-0298-d-fl] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Catechol-O-methyltransferase (COMT) is an important enzyme involved in inactivation of catechol estrogens, which are metabolites with carcinogenic properties. Some investigations in human breast cancer associate a genetic polymorphism in the COMT gene (COMT val158met) with an increased risk and poor clinical progression of the disease. In dogs, there are 2 recognized single nucleotide polymorphisms in the COMT gene (COMTG216A and COMTG482A); however, their influence on the outcome of mammary neoplasms has never been investigated. The purpose of this study is to investigate the influence of COMT in the clinical progression of canine mammary tumors, namely in recurrence, metastasis and survival by testing 2 SNPs (G216A and G482A), and 2 genotypes of the COMT gene. A case series was conducted analyzing genomic DNA samples by polymerase chain reaction-restriction fragment length polymorphism from 80 bitches with mammary tumors. Animals were submitted to an active follow-up study for a period of 24 months after surgery. We observed that bitches carrying both genetic variations simultaneously are more likely to develop recurrence of mammary lesions. Our results demonstrate a possible role for COMT genotypes in the outcome of mammary neoplasms in the dog. Identifying a genetic factor predictive of recurrence may be useful in selecting the most effective surgical approach for canine mammary neoplasms.
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Affiliation(s)
- P. Dias Pereira
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto
| | - C. C. Lopes
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto
| | - A. J. F. Matos
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto
| | - D. Pinto
- Molecular Oncology Unit, Instituto Português de Oncologia do Porto Francisco Gentil, EPE (IPOP-FG)
| | - F. Gärtner
- Instituto de Patologia e Imunologia Molecular (IPATIMUP), Universidade do Porto, Porto, Portugal
| | - C. Lopes
- Molecular Oncology Unit, Instituto Português de Oncologia do Porto Francisco Gentil, EPE (IPOP-FG)
| | - R. Medeiros
- Molecular Oncology Unit, Instituto Português de Oncologia do Porto Francisco Gentil, EPE (IPOP-FG)
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