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Lee DHY, Tsang JY, Li JJX, Lau SL, Tam F, Loong TC, Tse GM. Cytokeratin 15 is a novel and independent predictor of poor outcome in luminal B HER2-negative breast carcinomas. Pathology 2024; 56:834-841. [PMID: 38909003 DOI: 10.1016/j.pathol.2024.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 02/28/2024] [Accepted: 03/18/2024] [Indexed: 06/24/2024]
Abstract
Cytokeratin 15 (CK15) has been described as a stem cell marker in human organs and its expression is seen in breast tissue. CK15 expression is associated with aggressive features in endometrial and oesophageal cancers, but data on the breast are lacking. This study aims to investigate the clinicopathological associations and prognostic significance of CK15 in breast carcinomas. A multi-institute cohort of breast carcinomas were retrieved. Clinicopathological and outcome data were obtained and compared with immunohistochemical expression CK15 and a panel of biomarkers. In total, 1,476 cases were included, with an expression rate of 3.5%, preferentially expressed in luminal subtypes (p=0.024), with luminal B carcinomas being the highest (4.7%), as opposed to basal-like (1%) and HER2-overexpressed carcinomas (0%). Except for nodal stage (p=0.013) and nodal metastasis (p=0.048), oestrogen (p=0.035) and progesterone receptor (p=0.001) positivity, there were no associations with other clinicopathological parameters. A trend was observed with shorter breast cancer specific survival (BCSS) in CK15-positive luminal B carcinomas (p=0.062). On further subgroup multivariate analysis of luminal B HER2-negative carcinomas, CK15 expression exhibited robust correlation with shorter BCSS (HR=9.004, p=0.001) and disease-free survival (HR=7.085, p<0.001). Restricted to luminal breast carcinomas, specifically luminal B HER2-negative, CK15 is demonstrated to be a robust independent predictor of higher risk of recurrence and shorter survival, with potential as a clinical prognostic marker and an exclusive stem cell marker for this subgroup of carcinomas.
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Affiliation(s)
- Dennis H Y Lee
- Department of Anatomical and Cellular Pathology and State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
| | - Julia Y Tsang
- Department of Anatomical and Cellular Pathology and State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
| | - Joshua J X Li
- Department of Anatomical and Cellular Pathology and State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
| | - Sin Leung Lau
- Department of Anatomical and Cellular Pathology and State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
| | - Fiona Tam
- Department of Pathology, Kwong Wah Hospital, Hong Kong
| | | | - Gary M Tse
- Department of Anatomical and Cellular Pathology and State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong.
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2
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Minello A, Carreira A. BRCA1/2 Haploinsufficiency: Exploring the Impact of Losing one Allele. J Mol Biol 2024; 436:168277. [PMID: 37714298 DOI: 10.1016/j.jmb.2023.168277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/17/2023]
Abstract
Since their discovery in the late 20th century, significant progress has been made in elucidating the functions of the tumor suppressor proteins BRCA1 and BRCA2. These proteins play vital roles in maintaining genome integrity, including DNA repair, replication fork protection, and chromosome maintenance. It is well-established that germline mutations in BRCA1 and BRCA2 increase the risk of breast and ovarian cancer; however, the precise mechanism underlying tumor formation in this context is not fully understood. Contrary to the long-standing belief that the loss of the second wild-type allele is necessary for tumor development, a growing body of evidence suggests that tumorigenesis can occur despite the presence of a single functional allele. This entails that heterozygosity in BRCA1/2 confers haploinsufficiency, where a single copy of the gene is not sufficient to fully suppress tumor formation. Here we provide an overview of the findings and the ongoing debate regarding BRCA haploinsufficiency. We further put out the challenges in studying this topic and discuss its potential relevance in the prevention and treatment of BRCA-related cancers.
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Affiliation(s)
- Anna Minello
- Institut Curie, PSL Research University, CNRS, UMR3348, F-91405 Orsay, France; Paris-Saclay University CNRS, UMR3348, F-91405 Orsay, France
| | - Aura Carreira
- Institut Curie, PSL Research University, CNRS, UMR3348, F-91405 Orsay, France; Paris-Saclay University CNRS, UMR3348, F-91405 Orsay, France; Genome Instability and Cancer Predisposition Lab, Department of Genome Dynamics and Function, Centro de Biologia Molecular Severo Ochoa (CBMSO, CSIC-UAM), Madrid 28049, Spain.
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Zeng J, Singh S, Zhou X, Jiang Y, Casarez E, Atkins KA, Janes KA, Zong H. A genetic mosaic mouse model illuminates the pre-malignant progression of basal-like breast cancer. Dis Model Mech 2023; 16:dmm050219. [PMID: 37815460 PMCID: PMC10668031 DOI: 10.1242/dmm.050219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 09/11/2023] [Indexed: 10/11/2023] Open
Abstract
Basal-like breast cancer (BLBC) is highly aggressive, and often characterized by BRCA1 and p53 deficiency. Although conventional mouse models enabled the investigation of BLBC at malignant stages, its initiation and pre-malignant progression remain understudied. Here, we leveraged a mouse genetic system known as mosaic analysis with double markers (MADM) to study BLBC initiation by generating rare GFP+Brca1, p53-deficient mammary cells alongside RFP+ wild-type sibling cells. After confirming the close resemblance of mammary tumors arising in this model to human BLBC at both transcriptomic and genomic levels, we focused our studies on the pre-malignant progression of BLBC. Initiated GFP+ mutant cells showed a stepwise pre-malignant progression trajectory from focal expansion to hyper-alveolarization and then to micro-invasion. Furthermore, despite morphological similarities to alveoli, hyper-alveolarized structures actually originate from ductal cells based on twin-spot analysis of GFP-RFP sibling cells. Finally, luminal-to-basal transition occurred exclusively in cells that have progressed to micro-invasive lesions. Our MADM model provides excellent spatiotemporal resolution to illuminate the pre-malignant progression of BLBC, and should enable future studies on early detection and prevention for this cancer.
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Affiliation(s)
- Jianhao Zeng
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Shambhavi Singh
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Xian Zhou
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Ying Jiang
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Eli Casarez
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Kristen A. Atkins
- Department of Pathology, University of Virginia Health System, Charlottesville, VA 22908, USA
- University of Virginia Comprehensive Cancer Center, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Kevin A. Janes
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
- University of Virginia Comprehensive Cancer Center, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Hui Zong
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
- University of Virginia Comprehensive Cancer Center, University of Virginia Health System, Charlottesville, VA 22908, USA
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4
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Wang Y, Ali MA, Vallon-Christersson J, Humphreys K, Hartman J, Rantalainen M. Transcriptional intra-tumour heterogeneity predicted by deep learning in routine breast histopathology slides provides independent prognostic information. Eur J Cancer 2023; 191:112953. [PMID: 37494846 DOI: 10.1016/j.ejca.2023.112953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 06/05/2023] [Accepted: 06/17/2023] [Indexed: 07/28/2023]
Abstract
BACKGROUND Intra-tumour heterogeneity (ITH) causes diagnostic challenges and increases the risk for disease recurrence. Quantification of ITH is challenging and has not been demonstrated in large studies. It has previously been shown that deep learning can enable spatially resolved prediction of molecular phenotypes from digital histopathology whole slide images (WSIs). Here we propose a novel method (Deep-ITH) to predict and measure ITH, and we evaluate its prognostic performance in breast cancer. METHODS Deep convolutional neural networks were used to spatially predict gene-expression (PAM50 set) from WSIs. For each predicted transcript, 12 measures of heterogeneity were extracted in the training data set (N = 931). A prognostic score to dichotomise patients into Deep-ITH low- and high-risk groups was established using an elastic-net regularised Cox proportional hazards model (recurrence-free survival). Prognostic performance was evaluated in two independent data sets: SöS-BC-1 (N = 1358) and SCAN-B-Lund (N = 1262). RESULTS We observed an increase in risk of recurrence in the high-risk group with hazard ratio (HR) 2.11 (95%CI:1.22-3.60; p = 0.007) using nested cross-validation. Subgroup analyses confirmed the prognostic performance in oestrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative, grade 3, and large tumour subgroups. The prognostic value was confirmed in the independent SöS-BC-1 cohort (HR=1.84; 95%CI:1.03-3.3; p = 3.99 ×10-2). In the other external cohort, significant HR was observed in the subgroup of histological grade 2 patients, as well as in the subgroup of patients with small tumours (<20 mm). CONCLUSION We developed a novel method for an automated, scalable, and cost-efficient measure of ITH from WSIs that provides independent prognostic value for breast cancer. SIGNIFICANCE Transcriptional ITH predicted by deep learning models enables prediction of patient survival from routine histopathology WSIs in breast cancer.
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Affiliation(s)
- Yinxi Wang
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Maya Alsheh Ali
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | | | - Keith Humphreys
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Johan Hartman
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden; Department of Clinical Pathology and Cancer Diagnostics, Karolinska University Hospital, Stockholm, Sweden; MedTechLabs, BioClinicum, Karolinska University Hospital, Solna, Sweden
| | - Mattias Rantalainen
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; MedTechLabs, BioClinicum, Karolinska University Hospital, Solna, Sweden.
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Zeng J, Singh S, Jiang Y, Casarez E, Atkins KA, Janes KA, Zong H. A genetic mosaic mouse model illuminates the pre-malignant progression of basal-like breast cancer. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.25.538333. [PMID: 37163037 PMCID: PMC10168298 DOI: 10.1101/2023.04.25.538333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Basal-like breast cancer is an aggressive breast cancer subtype, often characterized by a deficiency in BRCA1 function and concomitant loss of p53 . While conventional mouse models enable the investigation of its malignant stages, one that reveals its initiation and pre-malignant progression is lacking. Here, we leveraged a mouse genetic system known as M osaic A nalysis with D ouble M arkers (MADM) to generate rare GFP-labeled Brca1 , p53 -deficient cells alongside RFP+ wildtype sibling cells in the mammary gland. The mosaicism resembles the sporadic initiation of human cancer and enables spatially resolved analysis of mutant cells in comparison to paired wildtype sibling cells. Mammary tumors arising in the model show transcriptomic and genomic characteristics similar to human basal-like breast cancer. Analysis of GFP+ mutant cells at interval time points before malignancy revealed a stepwise progression of lesions from focal expansion to hyper-alveolarization and then to micro-invasion. These stereotyped morphologies indicate the pre-malignant stage irrespective of the time point at which it is observed. Paired analysis of GFP-RFP siblings during focal expansion suggested that hyper-alveolarized structures originate from ductal rather than alveolar cells, despite their morphological similarities to alveoli. Evidence for luminal-to-basal transition at the pre-malignant stages was restricted to cells that had escaped hyper-alveoli and progressed to micro-invasive lesions. Our MADM-based mouse model presents a useful tool for studying the pre-malignancy of basal-like breast cancer. Summary statement A mouse model recapitulates the process of human basal-like breast tumorigenesis initiated from sporadic Brca1, p53 -deficient cells, empowering spatially-resolved analysis of mutant cells during pre-malignant progression.
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The Breast Cancer Protooncogenes HER2, BRCA1 and BRCA2 and Their Regulation by the iNOS/NOS2 Axis. Antioxidants (Basel) 2022; 11:antiox11061195. [PMID: 35740092 PMCID: PMC9227079 DOI: 10.3390/antiox11061195] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 06/01/2022] [Accepted: 06/06/2022] [Indexed: 02/04/2023] Open
Abstract
The expression of inducible nitric oxide synthase (iNOS; NOS2) and derived NO in various cancers was reported to exert pro- and anti-tumorigenic effects depending on the levels of expression and the tumor types. In humans, the breast cancer level of iNOS was reported to be overexpressed, to exhibit pro-tumorigenic activities, and to be of prognostic significance. Likewise, the expression of the oncogenes HER2, BRCA1, and BRCA2 has been associated with malignancy. The interrelationship between the expression of these protooncogenes and oncogenes and the expression of iNOS is not clear. We have hypothesized that there exist cross-talk signaling pathways between the breast cancer protooncogenes, the iNOS axis, and iNOS-mediated NO mutations of these protooncogenes into oncogenes. We review the molecular regulation of the expression of the protooncogenes in breast cancer and their interrelationships with iNOS expression and activities. In addition, we discuss the roles of iNOS, HER2, BRCA1/2, and NO metabolism in the pathophysiology of cancer stem cells. Bioinformatic analyses have been performed and have found suggested molecular alterations responsible for breast cancer aggressiveness. These include the association of BRCA1/2 mutations and HER2 amplifications with the dysregulation of the NOS pathway. We propose that future studies should be undertaken to investigate the regulatory mechanisms underlying the expression of iNOS and various breast cancer oncogenes, with the aim of identifying new therapeutic targets for the treatment of breast cancers that are refractory to current treatments.
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Roessner A, Lohmann C, Jechorek D. Translational cell biology of highly malignant osteosarcoma. Pathol Int 2021; 71:291-303. [PMID: 33631032 DOI: 10.1111/pin.13080] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 01/31/2021] [Indexed: 12/19/2022]
Abstract
Highly malignant osteosarcoma (HMO) is the most frequent malignant bone tumor preferentially occurring in adolescents and children with a second more flat peak in patients over the age of 60. The younger patients benefit from combined neoadjuvant chemotherapy with 65-70% 5-year survival rate. In patients with metastatic HMO the 5-year survival rate is consistently poor with approximately 30%. In the last several years strategies for target therapies have been developed by using next generation sequencing (NGS) for defining targetable molecular factors. However, it has so far been challenging to establish an effective target therapy for so-called 'orphan tumors' without recognizable driver mutations, including HMO. The molecular genetic studies using NGS have shown that HMOs are genomically unstable tumors with highly complex chaotic karyotypes. Before the background of this genetic complexity more investigations should be performed in the future for defining targetable biological factors. As the prognosis could not be improved for 40 years one may expect improvements for patients only by gaining a deeper understanding of the cell and molecular biology of HMO. The cell of origin of HMO is being clarified now. The majority of studies indicate that an osteoblastic progenitor cell is probably the cell of origin of HMO and not an undifferentiated mesenchymal stem cell. This means that the established histopathological definition of HMO through verification of osteoid production by the osteoblastic cells is well justified and will probably be the cornerstone for a precise differential diagnosis of HMO also in the years to come.
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Affiliation(s)
- Albert Roessner
- Department of Pathology, Otto-von-Guericke University, Magdeburg, Germany
| | - Christoph Lohmann
- Department of Orthopedics, Otto-von-Guericke University, Magdeburg, Germany
| | - Doerthe Jechorek
- Department of Pathology, Otto-von-Guericke University, Magdeburg, Germany
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Grandal B, Evrevin C, Laas E, Jardin I, Rozette S, Laot L, Dumas E, Coussy F, Pierga JY, Brain E, Saule C, Stoppa-Lyonnet D, Frank S, Sénéchal C, Lae M, De Croze D, Bataillon G, Guerin J, Reyal F, Hamy AS. Impact of BRCA Mutation Status on Tumor Infiltrating Lymphocytes (TILs), Response to Treatment, and Prognosis in Breast Cancer Patients Treated with Neoadjuvant Chemotherapy. Cancers (Basel) 2020; 12:cancers12123681. [PMID: 33302444 PMCID: PMC7764707 DOI: 10.3390/cancers12123681] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/01/2020] [Accepted: 12/03/2020] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Five to 10% of breast cancers (BCs) occur in a genetic predisposition context (mainly BRCA pathogenic variant). Nevertheless, little is known about immune tumor infiltration, response to neoadjuvant chemotherapy (NAC), pathologic complete response (pCR) and adverse events according to BRCA status. MATERIAL AND METHODS Out of 1199 invasive BC patients treated with NAC between 2002 and 2012, we identified 267 patients tested for a germline BRCA pathogenic variant. We evaluated pre-NAC and post-NAC immune infiltration (TILs). Response to chemotherapy was assessed by pCR rates. Association of clinical and pathological factors with TILs, pCR and survival was assessed by univariate and multivariate analyses. RESULTS Among 1199 BC patients: 46 were BRCA-deficient and 221 BRCA-proficient or wild type (WT). At NAC completion, pCR was observed in 84/266 (31%) patients and pCR rates were significantly higher in BRCA-deficient BC (p = 0.001), and this association remained statistically significant only in the luminal BC subtype (p = 0.006). The interaction test between BC subtype and BRCA status was nearly significant (Pinteraction = 0.056). Pre and post-NAC TILs were not significantly different between BRCA-deficient and BRCA-proficient carriers; however, in the luminal BC group, post-NAC TILs were significantly higher in BRCA-deficient BC. Survival analysis were not different between BRCA-carriers and non-carriers. CONCLUSIONS BRCA mutation status is associated with higher pCR rates and post-NAC TILs in patients with luminal BC. BRCA-carriers with luminal BCs may represent a subset of patients deriving higher benefit from NAC. Second line therapies, including immunotherapy after NAC, could be of interest in non-responders to NAC.
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Affiliation(s)
- Beatriz Grandal
- Department of Surgery, Institut Curie, University Paris, 75005 Paris, France; (B.G.); (C.E.); (E.L.); (I.J.); (S.R.); (L.L.)
- Residual Tumor & Response to Treatment Laboratory, RT2Lab, Translational Research Department, INSERM, U932 Immunity and Cancer, Institut Curie, 26 rue d’Ulm, 75005 Paris, France; (E.D.); (A.-S.H.)
| | - Clémence Evrevin
- Department of Surgery, Institut Curie, University Paris, 75005 Paris, France; (B.G.); (C.E.); (E.L.); (I.J.); (S.R.); (L.L.)
| | - Enora Laas
- Department of Surgery, Institut Curie, University Paris, 75005 Paris, France; (B.G.); (C.E.); (E.L.); (I.J.); (S.R.); (L.L.)
| | - Isabelle Jardin
- Department of Surgery, Institut Curie, University Paris, 75005 Paris, France; (B.G.); (C.E.); (E.L.); (I.J.); (S.R.); (L.L.)
| | - Sonia Rozette
- Department of Surgery, Institut Curie, University Paris, 75005 Paris, France; (B.G.); (C.E.); (E.L.); (I.J.); (S.R.); (L.L.)
| | - Lucie Laot
- Department of Surgery, Institut Curie, University Paris, 75005 Paris, France; (B.G.); (C.E.); (E.L.); (I.J.); (S.R.); (L.L.)
| | - Elise Dumas
- Residual Tumor & Response to Treatment Laboratory, RT2Lab, Translational Research Department, INSERM, U932 Immunity and Cancer, Institut Curie, 26 rue d’Ulm, 75005 Paris, France; (E.D.); (A.-S.H.)
| | - Florence Coussy
- Department of Oncology, Institut Curie, 26 rue d’Ulm, 75005 Paris, France; (F.C.); (J.-Y.P.)
| | - Jean-Yves Pierga
- Department of Oncology, Institut Curie, 26 rue d’Ulm, 75005 Paris, France; (F.C.); (J.-Y.P.)
| | - Etienne Brain
- Department of Oncology, Centre René Huguenin, Institut Curie, 35 rue Dailly, 92210 St Cloud, France;
| | - Claire Saule
- Department of Genetics, Institut Curie, 26 rue d’Ulm, 75005 Paris, France; (C.S.); (D.S.-L.); (S.F.)
| | - Dominique Stoppa-Lyonnet
- Department of Genetics, Institut Curie, 26 rue d’Ulm, 75005 Paris, France; (C.S.); (D.S.-L.); (S.F.)
| | - Sophie Frank
- Department of Genetics, Institut Curie, 26 rue d’Ulm, 75005 Paris, France; (C.S.); (D.S.-L.); (S.F.)
| | - Claire Sénéchal
- Department of Genetics, Institut Bergonié, 229 Cours de l’Argonne, 33000 Bordeaux, France;
| | - Marick Lae
- Department of Pathology, Centre René Huguenin, Institut Curie, 35 rue Dailly, 92210 St Cloud, France; (M.L.); (D.D.C.)
- Department of Pathology, Centre Henri Becquerel, INSERM U1245, UNIROUEN, University of Normandie, 76038 Rouen, France
| | - Diane De Croze
- Department of Pathology, Centre René Huguenin, Institut Curie, 35 rue Dailly, 92210 St Cloud, France; (M.L.); (D.D.C.)
| | | | - Julien Guerin
- Data Office, Institut Curie, 25 rue d’Ulm, 75005 Paris, France;
| | - Fabien Reyal
- Department of Surgery, Institut Curie, University Paris, 75005 Paris, France; (B.G.); (C.E.); (E.L.); (I.J.); (S.R.); (L.L.)
- Residual Tumor & Response to Treatment Laboratory, RT2Lab, Translational Research Department, INSERM, U932 Immunity and Cancer, Institut Curie, 26 rue d’Ulm, 75005 Paris, France; (E.D.); (A.-S.H.)
- Correspondence: ; Tel.: +33-144324660; Fax: +33-153104037
| | - Anne-Sophie Hamy
- Residual Tumor & Response to Treatment Laboratory, RT2Lab, Translational Research Department, INSERM, U932 Immunity and Cancer, Institut Curie, 26 rue d’Ulm, 75005 Paris, France; (E.D.); (A.-S.H.)
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Trusler O, Goodwin J, Laslett AL. BRCA1 and BRCA2 associated breast cancer and the roles of current modelling systems in drug discovery. Biochim Biophys Acta Rev Cancer 2020; 1875:188459. [PMID: 33129865 DOI: 10.1016/j.bbcan.2020.188459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/18/2020] [Accepted: 10/20/2020] [Indexed: 02/08/2023]
Abstract
For a drug candidate to be fully developed takes years and investment of hundreds of millions of dollars. There is no doubt that drug development is difficult and risky, but vital to protecting against devastating disease. This difficulty is clearly evident in BRCA1 and BRCA2 related breast cancer, with current treatment options largely confined to invasive surgical procedures, as well as chemotherapy and radiotherapy regimes which damage healthy tissue and can leave remnant disease. Consequently, patient survival and relapse rates are far from ideal, and new candidate treatments are needed. The preclinical stages of drug discovery are crucial to get right for translation to hospital beds. Disease models must take advantage of current technologies and be accurate for rapid and translatable treatments. Careful selection of cell lines must be coupled with high throughput techniques, with promising results trialled further in highly accurate humanised patient derived xenograft models. Traditional adherent drug screening should transition to 3D culture systems amenable to high throughput techniques if the gap between in vitro and in vivo studies is to be partially bridged. The possibility of organoid, induced pluripotent stem cell, and conditionally reprogrammed in vitro models is tantalising, however protocols are yet to be fully established. This review of BRCA1 and BRCA2 cancer biology and current modelling systems will hopefully guide the design of future drug discovery endeavours and highlight areas requiring improvement.
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Affiliation(s)
- Oliver Trusler
- CSIRO Manufacturing, Clayton, Victoria 3168, Australia; Australian Regenerative Medicine Institute, Monash University, Victoria 3800, Australia
| | - Jacob Goodwin
- CSIRO Manufacturing, Clayton, Victoria 3168, Australia; Australian Regenerative Medicine Institute, Monash University, Victoria 3800, Australia
| | - Andrew L Laslett
- CSIRO Manufacturing, Clayton, Victoria 3168, Australia; Australian Regenerative Medicine Institute, Monash University, Victoria 3800, Australia.
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Lafta IJ. E2F6 is essential for cell viability in breast cancer cells during replication stress. ACTA ACUST UNITED AC 2019; 43:293-304. [PMID: 31768102 PMCID: PMC6823915 DOI: 10.3906/biy-1905-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
E2F6 is a member of the E2F family of transcription factors involved in regulation of a wide variety of genes through both activation and repression. E2F6 has been reported as overexpressed in breast cancers but whether or not this is important for tumor development is unclear. We first checked E2F6 expression in tumor cDNAs and the protein level in a range of breast cancer cell lines. RNA interference-mediated depletion was then used to assess the importance of E2F6 expression in cell lines with regard to cell cycle profile using fluorescence-activated cell sorting and a cell survival assay using (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT). The overexpression of E2F6 was confirmed in breast tumor cDNA samples and breast cancer cell lines. Depletion of E2F6 in the breast cancer cells reduced cell viability in MCF-7, T-47D, and MDA-MB-231 cells. There was little effect in the nontumor breast cell line MCF-10A. The deleterious effect on cancer cells was greater during replication stress, leading to an increase in the proportion of breast cancer cells with sub-G1 DNA content. These results suggest that E2F6 might be essential for the survival of breast cancer cells experiencing replication stress, and therefore it could be a target for combined therapy.
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Affiliation(s)
- Inam Jasim Lafta
- Department of Microbiology, College of Veterinary Medicine, University of Baghdad, Baghdad, Iraq
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11
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Asik E, Akpinar Y, Caner A, Kahraman N, Guray T, Volkan M, Albarracin C, Pataer A, Arun B, Ozpolat B. EF2-kinase targeted cobalt-ferrite siRNA-nanotherapy suppresses BRCA1-mutated breast cancer. Nanomedicine (Lond) 2019; 14:2315-2338. [DOI: 10.2217/nnm-2019-0132] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Aim: To investigate the role of EF2K in BRCA1-mutated breast cancer. Materials & methods: We developed silica coated cobalt-ferrite (CoFe) nanoparticles for in vivo delivery of small interfering RNAs (siRNAs) into BRCA1-mutated breast cancer. Results: Expression of EF2K is highly upregulated in the majority (78.5%) of BRCA1-mutated patients and significantly associated with poor patient survival and metastasis. Silencing of EF2K reduced cell proliferation, migration and invasion of the cancer cells. In vivo therapeutic targeting of EF2K by CoFe-siRNA-nanoparticles leads to sustained EF2K gene knockdown and suppressed tumor growth in orthotopic xenograft models of BRCA1-mutated breast cancer. Conclusion: EF2K is a potential novel molecular target in BRCA1-mutated tumors and CoFe-based siRNA nanotherapy may be used as a novel approach to target EF2K.
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Affiliation(s)
- Elif Asik
- Department of Experimental Therapeutics, The University of Texas-MD Anderson Cancer Center, Houston, TX 77054, USA
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey
| | - Yeliz Akpinar
- Department of Chemistry, Middle East Technical University, Ankara 06800, Turkey
- Department of Chemistry, Kırsehir Ahi Evran University, Kırsehir 40100, Turkey
| | - Ayse Caner
- Department of Experimental Therapeutics, The University of Texas-MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Nermin Kahraman
- Department of Experimental Therapeutics, The University of Texas-MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Tulin Guray
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey
| | - Murvet Volkan
- Department of Chemistry, Middle East Technical University, Ankara 06800, Turkey
| | - Constance Albarracin
- Department of Pathology, Division of Pathology/Lab Medicine, MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Apar Pataer
- Department of Thoracic Surgery, MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Banu Arun
- Departments of Breast Medical Oncology & Breast Cancer Genetics, The University of Texas-MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Bulent Ozpolat
- Department of Experimental Therapeutics, The University of Texas-MD Anderson Cancer Center, Houston, TX 77054, USA
- Center for RNA Interference & Non-Coding RNA, The University of Texas-MD Anderson Cancer Center, Houston, TX 77054, USA
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12
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Association of Cytokeratin 5 and Claudin 3 expression with BRCA1 and BRCA2 germline mutations in women with early breast cancer. BMC Cancer 2019; 19:695. [PMID: 31307407 PMCID: PMC6631579 DOI: 10.1186/s12885-019-5908-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 07/08/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND It is important to identify biomarkers associated with BRCA mutation in women with early breast cancer (BC) to improve early identification of mutation carriers. Thus, in this study, we examined the protein expression of claudin (CLDN) 3, CLDN4, CLDN7, and E-cadherin. Moreover, we analyzed additional histopathological variables and their associations in familial BC. METHODS Immunohistochemical analysis for CLDNs and E-cadherin was performed on 237 BC cases of three different subsets of BC tumors: 62 from BRCA1 mutation carriers, 59 from BRCA2 mutation carriers, and 116 tumors from patients with BRCA wild type (WT) as controls. Histopathological data were also analyzed in the different subgroups. Logistic regression and receiver operation characteristic (ROC) curve were conducted to investigate factors associated with BRCA tumors. RESULTS Expression of CLDN3 positively correlated with BRCA-mutated BC. CLDN3 was expressed in 58% of BRCA1-mutated tumors compared to only 7% in BRCA2-mutated tumors (p < 0.001) and 1% in WT tumors (p < 0.001). CK5 and CK14 expression were also more likely to arise in BRCA1 tumors (44 and 16%, respectively) than in the control group (8 and 4%) (p < 0.001, p = 0.012, respectively). We also found a significantly higher proportion of CK5+ among BRCA1 tumors (44%) in comparison with BRCA2-related BC (8%) (p < 0.001). In addition, there was a significant difference between both groups regarding CK14: positive expression in 16 and 5%, respectively (p = 0.030). CK5 and CK14 did not differ between the BRCA2 group and the WT tumors significantly. In a multivariate regression model, expression of CK5 (Odds ratio (OR): 6.46; 95% confidence interval (CI): 1.52-27.43; p = 0.011), and CLDN3 (OR: 200.48; 95% CI: 21.52-1867.61; p < 0.001) were associated with BRCA1 mutation status. CONCLUSIONS Our data suggests that CLDN3, CK5, and CK14 in combination with ER, PR and HER2 are associated with BRCA1 mutation status.
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13
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BRCA1 Mutations Associated With Increased Risk of Brain Metastases in Breast Cancer: A 1: 2 Matched-pair Analysis. Am J Clin Oncol 2019; 41:1252-1256. [PMID: 29782359 DOI: 10.1097/coc.0000000000000466] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Brain metastases (BM) occur in ∼5% of breast cancer patients. BRCA1-associated cancers are often basal-like and basal-like cancers are known to have a predilection for central nervous system metastases. We performed a matched-pair analysis of breast cancer patients with and without BRCA mutations and compared the frequency of BM in both groups. MATERIALS AND METHODS From a database of 1935 patients treated for localized breast cancer at our institution from 2009 to 2014 we identified 20 patients with BRCA1 or BRCA2 mutations and manually matched 40 patients without BRCA mutations accounting for age, stage, estrogen receptor expression, and human epidermal growth factor receptor 2 (HER2) expression. Comparisons of freedom from brain metastasis, brain metastasis-free survival, and overall survival were made using the log rank test. Testing for a basal-type phenotype using the immunohistochemistry definition (ER/PR/HER2 and either CK 5/6 or EGFR) was performed for BRCA patients who developed BM and their matched controls. RESULTS We analyzed 60 patients: 20 BRCA and 40 were matched controls. Median follow-up was 37 and 49 months, respectively. Three years freedom from brain metastasis was 84% for BRCA patients and 97% for BRCA controls (P=0.049). Three years brain metastasis-free survival was 84% and 97% for the BRCA+ and controls, respectively (P=0.176). Mean time to brain failure was 11 months from diagnosis for the BRCA patients. All 3 BRCA1 patients who developed BM were of a basal-type triple negative phenotype. CONCLUSIONS Breast cancer patients with germline BRCA1 mutations appear to have a shorter interval to brain progression while accounting for confounding factors.
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14
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Fernandes GC, Felicio PS, Michelli RAD, Coelho AS, Scapulatempo-Neto C, Palmero EI. Differential Profile of BRCA1 vs. BRCA2 Mutated Families: A Characterization of the Main Differences and Similarities in Patients. Asian Pac J Cancer Prev 2019; 20:1655-1660. [PMID: 31244284 PMCID: PMC7021617 DOI: 10.31557/apjcp.2019.20.6.1655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Indexed: 01/07/2023] Open
Abstract
The identification of families at-risk for hereditary breast cancer (BC) is important because affected individuals present a much higher cancer risk than the general population. The aim of this study was to identify the most important factors associated with the presence of a pathogenic BRCA1/BRCA2 mutation. Family history (FH), histopathological and immunohistochemical characteristics were compared among BC women with pathogenic BRCA1/BRCA2 variants; VUSs in BRCA1/BRCA2; BRCA1/BRCA2 WT and sporadic BC. The most significative differences observed concerned the molecular subtype of the tumors, age at cancer diagnosis and FH of cancer. The presence of bilateral breast cancer (BBC), number of BC cases and the presence of ovarian cancer (OC) increased (respectively) 5.797, 5.033 and 4.412 times the risk of being a BRCA1/BRCA2 mutation carrier. Besides, women with BRCA1 or BRCA2 mutations presented different tumor and FH profiles. The main characteristics associated with a BRCA1 mutation were triple negativity (OR: 17.31), BBC history (OR: 4.96) and occurrence of OC (OR: 4.32). There were no major discerning components associated with BRCA2 mutations. Thus, we conclude that tumor pathology and FH of cancer might be considered together at the time of genetic testing mainly in countries where access to genetic testing is still restricted.
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Affiliation(s)
| | | | | | | | - Cristovam Scapulatempo-Neto
- Molecular Oncology Research Center, Barretos Cancer Hospital, Brazil. ,Department of Pathology, Barretos Cancer Hospital, Brazil
| | - Edenir Inêz Palmero
- Molecular Oncology Research Center, Barretos Cancer Hospital, Brazil. ,Department of Oncogenetics, Barretos Cancer Hospital, Brazil.,Barretos School of Health Sciences, Dr. Paulo Prata - FACISB, Brazil
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15
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Macedo GS, Alemar B, Ashton-Prolla P. Reviewing the characteristics of BRCA and PALB2-related cancers in the precision medicine era. Genet Mol Biol 2019; 42:215-231. [PMID: 31067289 PMCID: PMC6687356 DOI: 10.1590/1678-4685-gmb-2018-0104] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 10/24/2018] [Indexed: 12/24/2022] Open
Abstract
Germline mutations in BRCA1 and BRCA2 (BRCA) genes confer high risk of developing cancer, especially breast and ovarian tumors. Since the cloning of these tumor suppressor genes over two decades ago, a significant amount of research has been done. Most recently, monoallelic loss-of-function mutations in PALB2 have also been shown to increase the risk of breast cancer. The identification of BRCA1, BRCA2 and PALB2 as proteins involved in DNA double-strand break repair by homologous recombination and of the impact of complete loss of BRCA1 or BRCA2 within tumors have allowed the development of novel therapeutic approaches for patients with germline or somatic mutations in said genes. Despite the advances, especially in the clinical use of PARP inhibitors, key gaps remain. Now, new roles for BRCA1 and BRCA2 are emerging and old concepts, such as the classical two-hit hypothesis for tumor suppression, have been questioned, at least for some BRCA functions. Here aspects regarding cancer predisposition, cellular functions, histological and genomic findings in BRCA and PALB2-related tumors will be presented, in addition to an up-to-date review of the evolution and challenges in the development and clinical use of PARP inhibitors.
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Affiliation(s)
- Gabriel S Macedo
- Post-Graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Precision Medicine Program, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Barbara Alemar
- Post-Graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Patricia Ashton-Prolla
- Post-Graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Precision Medicine Program, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
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16
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Danzinger S, Tan YY, Rudas M, Kastner MT, Weingartshofer S, Muhr D, Singer CF. Differential Claudin 3 and EGFR Expression Predicts BRCA1 Mutation in Triple-Negative Breast Cancer. Cancer Invest 2018; 36:378-388. [DOI: 10.1080/07357907.2018.1499934] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Sabine Danzinger
- Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Yen Yen Tan
- Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Margaretha Rudas
- Department of Pathology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Marie-Theres Kastner
- Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Sigrid Weingartshofer
- Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Daniela Muhr
- Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Christian F. Singer
- Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
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17
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Cao A, Huang L, Shao Z. The Preventive Intervention of Hereditary Breast Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1026:41-57. [PMID: 29282679 DOI: 10.1007/978-981-10-6020-5_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Approximately 5-10% of breast cancer is considered to be hereditary. Familial breast cancers exhibit a dominant hereditary pattern, which typically have an early age of onset and are accompanied by symptoms of ovarian cancer, bilateral breast cancer, or male breast cancer. BRCA gene mutation carriers should be regarded as high-risk groups for breast cancer, which necessitates early examination of breast cancer. Studies have built up kinds of predictive models and recommended that female BRCA mutation carriers should receive breast self-test training and take monthly breast self-examination. Familial or hereditary breast cancer family members are high-risk groups, and their risks of breast cancer can be reduced by chemoprevention, including dietary composition adjustment and application of endocrine drugs. In recent years, large-scale clinical trials have shown the important role of chemoprevention in reducing the occurrence of hereditary breast cancer. Prophylactic mastectomy is also suitable for healthy women with high breast cancer risk factors. It can reduce the incidence rate of breast cancer in high-risk women by 90% and decrease the breast cancer mortality rate in medium-risk and high-risk women by 100% and 81%, respectively.
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Affiliation(s)
- Ayong Cao
- Department of Breast Surgery, Shanghai Cancer Center/Cancer Institute, Fudan University, No.270 Dong'an Road, Shanghai, China
| | - Liang Huang
- Department of Breast Surgery, Shanghai Cancer Center/Cancer Institute, Fudan University, No.270 Dong'an Road, Shanghai, China
| | - Zhimin Shao
- Department of Breast Surgery, Shanghai Cancer Center/Cancer Institute, Fudan University, No.270 Dong'an Road, Shanghai, China.
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18
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Maksimenko J, Irmejs A, Trofimovičs G, Bērziņa D, Skuja E, Purkalne G, Miklaševičs E, Gardovskis J. High frequency of pathogenic non-founder germline mutations in BRCA1 and BRCA2 in families with breast and ovarian cancer in a founder population. Hered Cancer Clin Pract 2018; 16:12. [PMID: 29928469 PMCID: PMC5989401 DOI: 10.1186/s13053-018-0094-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Accepted: 05/23/2018] [Indexed: 12/26/2022] Open
Abstract
Background Pathogenic BRCA1 founder mutations (c.4035delA, c.5266dupC) contribute to 3.77% of all consecutive primary breast cancers and 9.9% of all consecutive primary ovarian cancers. Identifying germline pathogenic gene variants in patients with primary breast and ovarian cancer could significantly impact the medical management of patients. The aim of the study was to evaluate the rate of pathogenic mutations in the 26 breast and ovarian cancer susceptibility genes in patients who meet the criteria for BRCA1/2 testing and to compare the accuracy of different selection criteria for second-line testing in a founder population. Methods Fifteen female probands and 1 male proband that met National Comprehensive Cancer Network (NCCN) criteria for BRCA1/2 testing were included in the study and underwent 26-gene panel testing. Fourteen probands had breast cancer, one proband had ovarian cancer, and one proband had both breast and ovarian cancer. In a 26-gene panel, the following breast and/or ovarian cancer susceptibility genes were included: ATM, BARD1, BLM, BRCA1, BRCA2, BRIP1, CDH1, CHEK2, EPCAM, FAM175A, MEN1, MLH1, MRE11A, MSH2, MSH6, MUTYH, NBN, PALB2, PMS2, PTEN, RAD50, RAD51C, RAD51D, STK11, TP53, and XRCC2. All patients previously tested negative for BRCA1 founder mutations. Results In 44% (7 out of 16) of tested probands, pathogenic mutations were identified. Six probands carried pathogenic mutations in BRCA1, and one proband carried pathogenic mutations in BRCA2. In patients, a variant of uncertain significance was found in BRCA2, RAD50, MRE11A and CDH1. The Manchester scoring system showed a high accuracy (87.5%), high sensitivity (85.7%) and high specificity (88.9%) for the prediction of pathogenic non-founder BRCA1/2 mutations. Conclusion A relatively high incidence of pathogenic non-founder BRCA1/2 mutations was observed in a founder population. The Manchester scoring system predicted the probability of non-founder pathogenic mutations with high accuracy.
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Affiliation(s)
- J Maksimenko
- Institute of Oncology, Riga Stradins University, Dzirciema iela 16, Riga, LV1007 Latvia
| | - A Irmejs
- Institute of Oncology, Riga Stradins University, Dzirciema iela 16, Riga, LV1007 Latvia
| | - G Trofimovičs
- Institute of Oncology, Riga Stradins University, Dzirciema iela 16, Riga, LV1007 Latvia
| | - D Bērziņa
- Institute of Oncology, Riga Stradins University, Dzirciema iela 16, Riga, LV1007 Latvia
| | - E Skuja
- Institute of Oncology, Riga Stradins University, Dzirciema iela 16, Riga, LV1007 Latvia
| | - G Purkalne
- Institute of Oncology, Riga Stradins University, Dzirciema iela 16, Riga, LV1007 Latvia
| | - E Miklaševičs
- Institute of Oncology, Riga Stradins University, Dzirciema iela 16, Riga, LV1007 Latvia
| | - J Gardovskis
- Institute of Oncology, Riga Stradins University, Dzirciema iela 16, Riga, LV1007 Latvia
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19
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Sengodan SK, K H S, Nadhan R, Srinivas P. Regulation of epithelial to mesenchymal transition by BRCA1 in breast cancer. Crit Rev Oncol Hematol 2018; 123:74-82. [PMID: 29482782 DOI: 10.1016/j.critrevonc.2018.01.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/06/2017] [Accepted: 01/17/2018] [Indexed: 12/13/2022] Open
Abstract
Reports till its discovery has proven multiple facets of Breast Cancer type 1 susceptibility gene (BRCA1) from nucleus to cytoplasm; from DNA repair to drug resistance; from Homologous Recombination (HR) to Ubiquitination; from breast to brain; from cancer to HIV and many of the roles are still unexplored. One of the recent attractions of BRCA1 is its role in regulating breast cancer metastasis though the exact mechanism is poorly understood. In this review, we will discuss the molecular interactions between BRCA1 and the key molecules of Epithelial to Mesenchymal Transition (EMT) associated with metastasis, its associated drug resistance and the possible treatment strategy for BRCA1 mutated breast cancer.
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Affiliation(s)
- Satheesh Kumar Sengodan
- Cancer Research Program 5, Rajiv Gandhi Centre for Biotechnology, Thycaud P O, Poojappura, Thiruvananthapuram 695 014, Kerala, India
| | - Sreelatha K H
- Cancer Research Program 5, Rajiv Gandhi Centre for Biotechnology, Thycaud P O, Poojappura, Thiruvananthapuram 695 014, Kerala, India
| | - Revathy Nadhan
- Cancer Research Program 5, Rajiv Gandhi Centre for Biotechnology, Thycaud P O, Poojappura, Thiruvananthapuram 695 014, Kerala, India
| | - Priya Srinivas
- Cancer Research Program 5, Rajiv Gandhi Centre for Biotechnology, Thycaud P O, Poojappura, Thiruvananthapuram 695 014, Kerala, India.
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20
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Petrovic N, Davidovic R, Bajic V, Obradovic M, Isenovic RE. MicroRNA in breast cancer: The association with BRCA1/2. Cancer Biomark 2017; 19:119-128. [DOI: 10.3233/cbm-160319] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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21
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Lo PK, Zhang Y, Wolfson B, Gernapudi R, Yao Y, Duru N, Zhou Q. Dysregulation of the BRCA1/long non-coding RNA NEAT1 signaling axis contributes to breast tumorigenesis. Oncotarget 2016; 7:65067-65089. [PMID: 27556296 PMCID: PMC5323139 DOI: 10.18632/oncotarget.11364] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 08/10/2016] [Indexed: 01/15/2023] Open
Abstract
Dysregulation of long non-codng RNA (lncRNA) expression has been found to contribute to tumorigenesis. However, the roles of lncRNAs in BRCA1-related breast cancer remain largely unknown. In this study, we delineate the role of the novel BRCA1/lncRNA NEAT1 signaling axis in breast tumorigenesis. BRCA1 inhibits NEAT1 expression potentially through binding to its genomic binding site upstream of the NEAT1 gene. BRCA1 deficiency in human normal/cancerous breast cells and mouse mammary glands leads to NEAT1 overexpression. Our studies show that NEAT1 upregulation resulting from BRCA1 deficiency stimulates in vitro and in vivo breast tumorigenicity. We have further identified molecular mediators downstream of the BRCA1/NEAT1 axis. NEAT1 epigenetically silences miR-129-5p expression by promoting the DNA methylation of the CpG island in the miR-129 gene. Silencing of miR-129-5p expression by NEAT1 results in upregulation of WNT4 expression, a target of miR-129-5p, which leads to activation of oncogenic WNT signaling. Our functional studies indicate that this NEAT1/miR-129-5p/WNT4 axis contributes to the tumorigenic effects of BRCA1 deficiency. Finally our in silico expression correlation analysis suggests the existence of the BRCA1/NEAT1/miR-129-5p axis in breast cancer. Our findings, taken together, suggest that the dysregulation of the BRCA1/NEAT1/miR-129-5p/WNT4 signaling axis is involved in promoting breast tumorigenesis.
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Affiliation(s)
- Pang-Kuo Lo
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Yongshu Zhang
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Benjamin Wolfson
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Ramkishore Gernapudi
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Yuan Yao
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Nadire Duru
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Qun Zhou
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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22
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Schirosi L, De Summa S, Tommasi S, Paradiso A, Sambiasi D, Popescu O, Simone G, Mangia A. Immunoprofile from tissue microarrays to stratify familial breast cancer patients. Oncotarget 2016; 6:27865-79. [PMID: 26312763 PMCID: PMC4695031 DOI: 10.18632/oncotarget.4720] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 07/23/2015] [Indexed: 12/13/2022] Open
Abstract
Familial breast cancer (BC) is a heterogeneous disease with variable prognosis. The identification of an immunoprofile is important to predict tumor behavior for the routine clinical management of familial BC patients. Using immunohistochemistry on tissue microarrays, we studied 95 familial BCs in order to analyze the expression of some biomarkers involved in different pathways. We used unsupervised hierarchical clustering analyses (HCA), performed using the immunohistochemical score data, to define an immunoprofile able to characterize these tumors. The analyses on 95 and then on a subset of 45 tumors with all biomarkers contemporarily evaluable, revealed the same biomarker and patient clusters. Focusing on the 45 tumors we identified a group of patients characterized by the low expression of estrogen receptor (P = 0.009), progesterone receptor (P < 0.001), BRCA1 (P = 0.005), nuclear Na+/H+ exchanger regulatory factor 1 (NHERF1) (P = 0.026) and hypoxia inducible factor-1 alpha (P < 0.001), and also by the higher expression of MIB1 (P = 0.043), cytoplasmic NHERF1 (P = 0.004), cytoplasmic BRCT-repeat inhibitor of hTERT expression (P = 0.001), vascular endothelial growth factor (VEGF) (P = 0.024) and VEGF receptor-1 (P = 0.029). This immunoprofile identified a more aggressive tumor phenotype associated also with a larger tumor size (P = 0.012) and G3 grade (P = 0.006), confirmed by univariate and multivariate analyses. In conclusion, the clinical application of HCA of immunohistochemical data could allow the assessment of prognostic biomarkers to be used simultaneously. The 10 protein expression panel might be used to identify the more aggressive tumor phenotype in familial BC and to direct patients towards a different clinical therapy.
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Affiliation(s)
- Laura Schirosi
- Functional Biomorphology Laboratory, IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, Italy
| | - Simona De Summa
- Molecular Genetic Laboratory, IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, Italy
| | - Stefania Tommasi
- Molecular Genetic Laboratory, IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, Italy
| | - Angelo Paradiso
- Experimental Medical Oncology, IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, Italy
| | - Domenico Sambiasi
- Experimental Medical Oncology, IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, Italy
| | - Ondina Popescu
- Pathology Department, IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, Italy
| | - Giovanni Simone
- Pathology Department, IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, Italy
| | - Anita Mangia
- Functional Biomorphology Laboratory, IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, Italy
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Peng L, Xu T, Long T, Zuo H. Association Between BRCA Status and P53 Status in Breast Cancer: A Meta-Analysis. Med Sci Monit 2016; 22:1939-45. [PMID: 27272763 PMCID: PMC4917318 DOI: 10.12659/msm.896260] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background Research on BRCA mutation has meaningful clinical implications, such as identifying risk of second primary cancers and risk of hereditary cancers. This study seeks to summarize available data to investigate the association between BRCA status and P53 status by meta-analysis. Material/Methods We searched PubMed, Embase, and Cochrane library databases for relevant studies. Meta-analysis was conducted using STATA software. We summarized odds ratios by fixed-effects or random-effects models. Results This study included a total of 4288 cases from 16 articles, which including 681 BRCA1 mutation carriers (BRCA1Mut), 366 carriers of BRCA2 mutation (BRCA2Mut), and 3241 carriers of normal versions of these genes. BRCA1Mut was significantly associated with P53 over-expression compared with BRCA2Mut (OR 1.851, 95% CI=1.393–2.458) or non-carriers (OR=2.503, 95% CI=1.493–4.198). No difference was found between p53 protein expression in BRCA2 Mut carriers and non-carriers (OR=0.881, 95% CI=0.670–1.158). Conclusions Our meta-analysis suggests that BRCA1Mut breast cancer patients are more likely to have P53 overexpression compared with BRCA2Mut and non-carriers. This information provides valuable information for clinicians who perform related studies in the future.
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Affiliation(s)
- Lin Peng
- Department of Breast Surgery, Affiliated Hospital of Luzhpu Medical College, Luzhou, Sichuan, China (mainland)
| | - Tao Xu
- Department of Neurosurgery, The Traditional Chinese Medicine (TCM) Hospital Affiliated with Sichuan Medical University, Luzhou, Sichuan, China (mainland)
| | - Ting Long
- Department of Internal Medicine-Neurology, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China (mainland)
| | - Huaiquan Zuo
- Department of Breast Surgery, Affiliated Hospital of Luzhpu Medical College, Luzhou, Sichuan, China (mainland)
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24
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Quiles F, Teulé À, Martinussen Tandstad N, Feliubadaló L, Tornero E, Del Valle J, Menéndez M, Salinas M, Wethe Rognlien V, Velasco A, Izquierdo A, Capellá G, Brunet J, Lázaro C. Identification of a founder BRCA1 mutation in the Moroccan population. Clin Genet 2016; 90:361-5. [PMID: 26864382 DOI: 10.1111/cge.12747] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 01/26/2016] [Accepted: 01/26/2016] [Indexed: 11/30/2022]
Abstract
Breast cancer (BC) is the most frequent cancer among women in Morocco. However, the role of the most prevalent BC-predisposing genes, BRCA1 and BRCA2, has been largely unexplored. To help define the role of BRCA1 in BC in Morocco, we characterized the first potential BRCA1 founder mutation in this population. Genetic testing of BRCA1 and BRCA2 in BC high-risk families identified mutation BRCA1 c.5309G>T, p.(Gly1770Val) or G1770V in five independent families from Morocco, suggesting a founder effect. To confirm this hypothesis, haplotype construction was performed using seven intragenic and flanking BRCA1 microsatellite markers. Clinical data were also compiled. Clinical data from carriers of mutation G1770V correspond to data from carriers of BRCA1 pathogenic mutations. Microsatellite analysis showed a common haplotype for the five families in a region comprising 1.54 Mb, confirming G1770V as the first specific founder BRCA1 mutation in the Moroccan population. Our findings contribute to a better understanding of BC genetics in the Moroccan population. Nevertheless, comprehensive studies of mutation G1770V in large series of BC patients from Morocco are needed to assess the real prevalence of this mutation and to improve genetic testing and risk assessment in this population.
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Affiliation(s)
- F Quiles
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | - À Teulé
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | | | - L Feliubadaló
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | - E Tornero
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | - J Del Valle
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | - M Menéndez
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | - M Salinas
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | - V Wethe Rognlien
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - A Velasco
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | - A Izquierdo
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | - G Capellá
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | - J Brunet
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain
| | - C Lázaro
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO-IDIBELL, ICO-IdIBGi, ICO-IGTP), L'Hospitalet de Llobregat, Barcelona, Spain.
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25
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Contribution of BRCA1 and BRCA2 Germline Mutations to Early Algerian Breast Cancer. DISEASE MARKERS 2016; 2016:7869095. [PMID: 26997744 PMCID: PMC4779828 DOI: 10.1155/2016/7869095] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 01/26/2016] [Indexed: 01/28/2023]
Abstract
Breast cancer is the most common female malignancy and the leading cancer mortality cause among Algerian women. Germline mutations in the BRCA1 and BRCA2 genes in patients with early-onset breast cancer have not been clearly identified within the Algerian population. It is necessary to study the BRCA1/2 genes involvement in the Algerian breast cancer occurrence. We performed this study to define germline mutations in BRCA1/2 and their implication in breast cancer among young women from eastern Algeria diagnosed or treated with primary invasive breast cancer at the age of 40 or less who were referred to Anti-Cancer Center of Setif, Algeria. Case series were unselected for family history. Eight distinct pathogenic mutations were identified in eight unrelated families. Three deleterious mutations and one large genomic rearrangement involving deletion of exon 2 were found in BRCA1 gene. In addition, four mutations within the BRCA2 gene and one large genomic rearrangement were identified. Novel mutation was found among Algerian population. Moreover, five variants of uncertain clinical significance and favor polymorphisms were identified. Our data suggest that BRCA1/2 mutations are responsible for a significant proportion of breast cancer in Algerian young women.
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26
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Jabbour-Leung NA, Chen X, Bui T, Jiang Y, Yang D, Vijayaraghavan S, McArthur MJ, Hunt KK, Keyomarsi K. Sequential Combination Therapy of CDK Inhibition and Doxorubicin Is Synthetically Lethal in p53-Mutant Triple-Negative Breast Cancer. Mol Cancer Ther 2016; 15:593-607. [PMID: 26826118 DOI: 10.1158/1535-7163.mct-15-0519] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 01/04/2016] [Indexed: 12/18/2022]
Abstract
Triple-negative breast cancer (TNBC) is an aggressive malignancy in which the tumors lack expression of estrogen receptor, progesterone receptor, and HER2. Hence, TNBC patients cannot benefit from clinically available targeted therapies and rely on chemotherapy and surgery for treatment. While initially responding to chemotherapy, TNBC patients are at increased risk of developing distant metastasis and have decreased overall survival compared with non-TNBC patients. A majority of TNBC tumors carry p53 mutations, enabling them to bypass the G1 checkpoint and complete the cell cycle even in the presence of DNA damage. Therefore, we hypothesized that TNBC cells are sensitive to cell-cycle-targeted combination therapy, which leaves nontransformed cells unharmed. Our findings demonstrate that sequential administration of the pan-CDK inhibitor roscovitine before doxorubicin treatment is synthetically lethal explicitly in TNBC cells. Roscovitine treatment arrests TNBC cells in the G2-M cell-cycle phase, priming them for DNA damage. Combination treatment increased frequency of DNA double-strand breaks, while simultaneously reducing recruitment of homologous recombination proteins compared with doxorubicin treatment alone. Furthermore, this combination therapy significantly reduced tumor volume and increased overall survival compared with single drug or concomitant treatment in xenograft studies. Examination of isogenic immortalized human mammary epithelial cells and isogenic tumor cell lines found that abolishment of the p53 pathway is required for combination-induced cytotoxicity, making p53 a putative predictor of response to therapy. By exploiting the specific biologic and molecular characteristics of TNBC tumors, this innovative therapy can greatly impact the treatment and care of TNBC patients. Mol Cancer Ther; 15(4); 593-607. ©2016 AACR.
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Affiliation(s)
- Natalie A Jabbour-Leung
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xian Chen
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Tuyen Bui
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Yufeng Jiang
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Dong Yang
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Smruthi Vijayaraghavan
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Mark J McArthur
- Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Kelly K Hunt
- Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Khandan Keyomarsi
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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27
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Kang E, Park SK, Lee JW, Kim Z, Noh WC, Jung Y, Yang JH, Jung SH, Kim SW. KOHBRA BRCA risk calculator (KOHCal): a model for predicting BRCA1 and BRCA2 mutations in Korean breast cancer patients. J Hum Genet 2016; 61:365-71. [PMID: 26763880 DOI: 10.1038/jhg.2015.164] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 11/26/2015] [Accepted: 12/10/2015] [Indexed: 12/27/2022]
Abstract
The widely used Western BRCA mutation prediction models underestimated the risk of having a BRCA mutation in Korean breast cancer patients. This study aimed to identify predictive factors for BRCA1/2 mutations and to develop a Korean BRCA risk calculator. The model was constructed by logistic regression model, and it was based on the Korean Hereditary Breast Cancer study, in which 1669 female patients were enrolled between May 2007 and December 2010. A separate data set of 402 patients, who were enrolled from Jan 2011 to August 2012, was used to test the performance of our model. In total, 264 (15.8%) and 67 (16.7%) BRCA mutation carriers were identified in the model and validation set, respectively. Multivariate analysis showed that age at breast cancer diagnosis, bilateral breast cancer, triple-negative breast cancer (TNBC) and the number of relatives with breast or ovarian cancer within third-degree relatives were independent predictors of the BRCA mutation among familial breast cancer patients. An age <35 years at diagnosis, bilateral breast cancer, both breast and ovarian cancer and TNBC remained significant predictors in non-familial breast cancer cases. Our model was developed based on logistic regression models. The validation results showed no differences between the observed and expected carrier probabilities. This model will be a useful tool for providing genetic risk assessments in Korean populations.
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Affiliation(s)
- Eunyoung Kang
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Sue K Park
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Biomedical Science, Seoul National University Graduate School, Seoul, Korea.,Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Jong Won Lee
- Department of Surgery, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Korea
| | - Zisun Kim
- Department of Surgery, Soonchunhyang University Hospital, Bucheon, Korea
| | - Woo-Chul Noh
- Department of Surgery, Korea Institute of Radiological and Medical Science, Korea Cancer Center Hospital, Seoul, Korea
| | - Yongsik Jung
- Department of Surgery, Ajou University School of Medicine, Suwon, Korea
| | - Jung-Hyun Yang
- Department of Surgery, Konkuk University School of Medicine, Seoul, Korea
| | - Sung Hoo Jung
- Department of Surgery, Chonbuk National University Hospital, Jeonju, Korea
| | - Sung-Won Kim
- Department of Surgery, Daerim St Mary's Hospital, Seoul, Korea
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28
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Bahreini F, Soltanian AR, Mehdipour P. A meta-analysis on concordance between immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) to detect HER2 gene overexpression in breast cancer. Breast Cancer 2015; 22:615-25. [PMID: 24718809 DOI: 10.1007/s12282-014-0528-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 03/17/2014] [Indexed: 02/05/2023]
Abstract
BACKGROUND We performed this meta-analysis study to evaluate the concordance and discordance between immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) in detecting HER2 alteration in human breast cancer. METHODS As a meta-analysis, the present study evaluated the available data from previous studies on the HER2 gene detected by IHC and FISH. To indicate the meta-analysis results, a forest plot was used. RESULTS We identified 172 citations, for which our inclusion criteria were met by 18 articles, representing 6629 cases. The overall concordance and discordance rate between IHC staining with score 0/1+ and FISH for detection failure of HER2 expression was 96 and 4 %, respectively. The present study showed that the overall proportion of FISH positive and negative rate for IHC score 2+ for detection of HER2 expression was 36 and 64 %, respectively; and 91 and 9 % for 3+ IHC scores. CONCLUSION The results of this study show that IHC score 0/1+ and 3+ cannot be completely considered as negative and positive breast cancer test, respectively. Therefore, we suggest a valid and complementary test, the same as FISH, to explore HER2 expression.
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Affiliation(s)
- Fatemeh Bahreini
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Pour Sina Avenue, 14176-13151, Tehran, Iran.
| | - Ali Reza Soltanian
- Department of Biostatistics and Epidemiology, Modeling of Noncommunicable Diseases Research Center, School of Public Health, Hamadan University of Medical Sciences, Shahid Fahmideh Street, P.O.Box 4171, 65155, Hamadan, Iran.
| | - Parvin Mehdipour
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Pour Sina Avenue, 14176-13151, Tehran, Iran.
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29
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Arun B, Akar U, Gutierrez-Barrera AM, Hortobagyi GN, Ozpolat B. The PARP inhibitor AZD2281 (Olaparib) induces autophagy/mitophagy in BRCA1 and BRCA2 mutant breast cancer cells. Int J Oncol 2015; 47:262-8. [PMID: 25975349 PMCID: PMC6904111 DOI: 10.3892/ijo.2015.3003] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 04/14/2015] [Indexed: 01/06/2023] Open
Abstract
PARP inhibitors are considered promising anti-cancer agents and currently being tested in clinical trials in hereditary breast cancer patients harboring mutations in BRCA1 and BRCA2 genes. In this study, we investigated the antiproliferative effects and mechanism of PARP inhibitors ABT-888 (Veliparib), BSI-201 (Iniparib) and AZD228 (Olaparib) in breast cancer cell lines with BRCA1 or BRCA2 mutations and 9 different BRCA wild-type cell lines with BRCA1 allelic loss. We found that AZD2281 was the most potent in the PARP inhibitors and induces significant growth inhibition (~95%) in BRCA1 mutant (HCC-1937, MDA-MB-436, and SUM-149PT) and BRCA2 mutant (HCC-1428) cell lines. AZD2281 treatment also resulted in growth inhibition ranging from 20 to 50% in cells with BRCA1 allelic loss, including ER(+), HER2/Neu(+) and triple-negative breast cancer (TNBC) cells, but showed no effect in cells without with type BRCA without allelic loss. Knocking down of BRCA1 or BRCA2 in TNBC cells with BRCA1 allelic loss by RNA interference significantly enhanced AZD2281-induced growth inhibition and induced significant autophagy that was associated with mitophagy in cells with BRCA mutations. Inhibition of autophagy by gene knockdown significantly diminished AZD2281-induced mitophagy and apoptosis, indicating that autophagic process mediates some of the downstream effects of PARP inhibitors. In conclusion, our data provide the first evidence of PARP inhibitor AZD2281 autophagy and mitophagy in breast cancer cell lines with BRCA mutations or BRCA-allelic loss. In addition, our results indicate that the patients with BRCA1 allelic loss may also benefit from PARP inhibitor therapy if BRCA is further inhibited.
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Affiliation(s)
- Banu Arun
- Department of Breast Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Ugur Akar
- Department of Breast Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Angelica M Gutierrez-Barrera
- Department of Breast Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Gabriel N Hortobagyi
- Department of Breast Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Bulent Ozpolat
- Department of Experimental Therapeutics, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
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30
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de Andrade FG, Marie SKN, Uno M, Matushita H, Taricco MA, Teixeira MJ, Rosemberg S, Oba-Shinjo SM. Immunohistochemical expression of cyclin D1 is higher in supratentorial ependymomas and predicts relapses in gross total resection cases. Neuropathology 2015; 35:312-23. [PMID: 25946121 DOI: 10.1111/neup.12195] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 12/21/2014] [Accepted: 12/22/2014] [Indexed: 12/29/2022]
Abstract
Ependymomas are tumors of the CNS. Although cyclin D1 overexpression has been related to several cancers, its prognostic value in ependymomas has not yet been fully established. We evaluated cyclin D1 expression by an immunohistochemistry analysis of 149 samples of ependymomas, including some relapses, corresponding to 121 patients. Eighty-one patients were adults, 60 were intracranial cases and 92 tumors were grade II. Gross total resection (GTR) was achieved in 62% of cases, and relapse was confirmed in 41.4% of cases. Cyclin D1 protein expression was analyzed by immunohistochemistry and scored with a labeling index (LI) calculated as the percentage of positively stained cells by intensity. We also analyzed expression of CCND1 and NOTCH1 in 33 samples of ependymoma by quantitative real-time PCR. A correlation between cyclin D1 LI score and anaplastic cases (P < 0.001), supratentorial location (P < 0.001) and age (P = 0.001) were observed. A stratified analysis demonstrated that cyclin D1 protein expression was strong in tumors with a supratentorial location, independent of the histological grade or age. Relapse was more frequent in cases with a higher cyclin D1 LI score (P = 0.046), and correlation with progression-free survival was observed in cases with GTR (P = 0.002). Only spinal canal tumor location and GTR were suggestive markers of PFS in multivarite analyses. Higher expression levels were observed in anaplastic cases for CCND1 (P = 0.002), in supratentorial cases for CCND1 (P = 0.008) and NOTCH1 (P = 0.011). There were correlations between the cyclin D1 mRNA and protein expression levels (P < 0.0001) and between CCND1 and NOTCH1 expression levels (P = 0.003). Higher cyclin D1 LI was predominant in supratentorial location and predict relapse in GTR cases. Cyclin D1 could be used as an immunohistochemical marker to guide follow-up and treatment in these cases.
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Affiliation(s)
- Fernanda Gonçalves de Andrade
- Laboratory of Cellular and Molecular Biology, Department of Neurology, University of Sao Paulo, Sao Paulo, Brazil.,Division of Neurosurgery, Department of Neurology, University of Sao Paulo, Sao Paulo, Brazil
| | - Suely Kazue Nagahashi Marie
- Laboratory of Cellular and Molecular Biology, Department of Neurology, University of Sao Paulo, Sao Paulo, Brazil
| | - Miyuki Uno
- Laboratory of Cellular and Molecular Biology, Department of Neurology, University of Sao Paulo, Sao Paulo, Brazil
| | - Hamilton Matushita
- Division of Neurosurgery, Department of Neurology, University of Sao Paulo, Sao Paulo, Brazil
| | - Mario Augusto Taricco
- Division of Neurosurgery, Department of Neurology, University of Sao Paulo, Sao Paulo, Brazil
| | | | - Sergio Rosemberg
- Pathology, Hospital das Clinicas, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Sueli Mieko Oba-Shinjo
- Laboratory of Cellular and Molecular Biology, Department of Neurology, University of Sao Paulo, Sao Paulo, Brazil
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31
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Methylation of the BRCA1 promoter in peripheral blood DNA is associated with triple-negative and medullary breast cancer. Breast Cancer Res Treat 2014; 148:615-22. [PMID: 25376744 DOI: 10.1007/s10549-014-3179-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 10/23/2014] [Indexed: 12/19/2022]
Abstract
It has been proposed that methylation signatures in blood-derived DNA may correlate with cancer risk. In this study, we evaluated whether methylation of the promoter region of the BRCA1 gene detectable in DNA from peripheral blood cells is a risk factor for breast cancer, in particular for tumors with pathologic features characteristic for cancers with BRCA1 gene mutations. We conducted a case-control study of 66 breast cancer cases and 36 unaffected controls. Cases were triple-negative or of medullary histology, or both; 30 carried a constitutional BRCA1 mutation and 36 did not carry a mutation. Blood for DNA methylation analysis was taken within three months of diagnosis. Methylation of the promoter of the BRCA1 gene was measured in cases and controls using methylation-sensitive high-resolution melting (MS-HRM). A sample with any detectable level of methylation was considered to be positive. Methylation of the BRCA1 promoter was detected in 15 of 66 cases and in 2 of 36 controls (OR 5.0, p = 0.03). Methylation was present in 15 of 36 women with breast cancer and without germline BRCA1 mutation, but in none of 30 women with breast cancer and a germline mutation (p < 0.01). The association between methylation and breast cancer was restricted to women with no constitutional BRCA1 mutation (OR 12.1, p = 0.0006). Methylation of the promoter of the BRCA1 gene detectable in peripheral blood DNA may be a marker of increased susceptibility to triple-negative or medullary breast cancer.
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32
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Krzystolik K, Jakubowska A, Gronwald J, Krawczyński MR, Drobek-Słowik M, Sagan L, Cyryłowski L, Lubiński W, Lubiński J, Cybulski C. Large deletion causing von Hippel-Lindau disease and hereditary breast cancer syndrome. Hered Cancer Clin Pract 2014; 12:16. [PMID: 25093046 PMCID: PMC4120008 DOI: 10.1186/1897-4287-12-16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 06/05/2014] [Indexed: 11/12/2022] Open
Abstract
Patients with intragenic mutations of the VHL gene have a typical disease presentation. However in cases of large VHL gene deletions which involve other genes in the proximity of the VHL gene a presentation of the disease can be different. To investigate whether large VHL deletions that remove the FANCD2 gene have an effect on the disease phenotype, we studied a family with a 50 kb large deletion encompassing these two genes. Four patients in this family were affected by VHL-related lesions. However one carrier of the deletion also had bilateral ductal breast cancer at age 46 and 49. Both tumors were of ~2 cm in diameter. On one side lymph nodes were affected. One tumor was ER- and PR-negative (HER2 s unknown) and the second was ER- and PR-positive, and HER2-negative. Our study suggests that a deletion of FANCD2 gene, an important gene in the DNA repair pathway, may be associated with an increased risk of breast cancer, but further studies are needed in this regard.
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Affiliation(s)
- Karol Krzystolik
- Department of Ophthalmology, Pomeranian Medical University (PUM), Szczecin, Poland ; International Hereditary Cancer Center, Department of Genetics, Pathology PUM, Szczecin, Poland
| | - Anna Jakubowska
- International Hereditary Cancer Center, Department of Genetics, Pathology PUM, Szczecin, Poland
| | - Jacek Gronwald
- International Hereditary Cancer Center, Department of Genetics, Pathology PUM, Szczecin, Poland
| | - Maciej R Krawczyński
- Department of Medical Genetics, Poznan University of Medical Sciences, Poznan, Poland
| | - Monika Drobek-Słowik
- Department of Ophthalmology, Pomeranian Medical University (PUM), Szczecin, Poland
| | - Leszek Sagan
- Department of Neurosurgery, PUM, Szczecin, Poland
| | | | - Wojciech Lubiński
- Department of Ophthalmology, Pomeranian Medical University (PUM), Szczecin, Poland
| | - Jan Lubiński
- International Hereditary Cancer Center, Department of Genetics, Pathology PUM, Szczecin, Poland
| | - Cezary Cybulski
- International Hereditary Cancer Center, Department of Genetics, Pathology PUM, Szczecin, Poland
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33
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Castilla MÁ, López-García MÁ, Atienza MR, Rosa-Rosa JM, Díaz-Martín J, Pecero ML, Vieites B, Romero-Pérez L, Benítez J, Calcabrini A, Palacios J. VGLL1 expression is associated with a triple-negative basal-like phenotype in breast cancer. Endocr Relat Cancer 2014; 21:587-99. [PMID: 24891455 DOI: 10.1530/erc-13-0485] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Vestigial-like 1 (VGLL1) is a poorly characterized gene encoding a transcriptional co-activator structurally homologous to TAZ and YAP that modulates the Hippo pathway in Drosophila. In this study, we examined the expression of VGLL1 and its intronic miRNA, miR-934, in breast cancer. VGLL1 and miR-934 expression miRNA profiling was carried out on frozen samples of grade 3 invasive ductal carcinomas. VGLL1 protein was also examined in 433 sporadic and BRCA1-associated breast carcinomas on tissue microarrays. RNA-seq data from The Cancer Genome Atlas (TCGA) was used to confirm differences in VGLL1 and miR-934 expression in different breast cancer subtypes, and to correlate their expression with that of other genes and miRNAs. Of 28 miRNAs differentially expressed in estrogen receptor (ER)-positive and ER-negative grade 3 breast carcinomas, miR-934 was most strongly upregulated in ER-negative carcinomas, and its expression was correlated with that of VGLL1. Nuclear VGLL1 expression was observed in 13% of sporadic breast carcinomas, and while VGLL1 was only occasionally found in luminal A (0.70%) and B (5.60%) carcinomas, it was often expressed in HER2-positive (17%), triple-negative (TN) breast carcinomas (>40%) and BRCA1-associated TN carcinomas (>50%). These findings were confirmed in the TCGA dataset, which revealed positive associations with luminal progenitor genes (GABRP, SLC6A14, FOXC1, PROM1, and BBOX1) and strong negative correlations with ER-associated genes (ESR1, C6ORF211, GATA3, and FOXA1). Moreover, VGLL1 expression was associated with reduced overall survival. In conclusion, VGLL1 and miR-934 are mainly expressed in sporadic and BRCA1-associated TN basal-like breast carcinomas, and their coordinated expression, at least partially mediated by the direct modulation of ESR1, might be involved in the maintenance of a luminal progenitor phenotype.
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Affiliation(s)
- María Ángeles Castilla
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, ItalyInstituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
| | - María Ángeles López-García
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, ItalyInstituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
| | - María Reina Atienza
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
| | - Juan Manuel Rosa-Rosa
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
| | - Juan Díaz-Martín
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, ItalyInstituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
| | - María Luisa Pecero
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
| | - Begoña Vieites
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, ItalyInstituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
| | - Laura Romero-Pérez
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, ItalyInstituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
| | - Javier Benítez
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
| | - Annarica Calcabrini
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
| | - José Palacios
- Instituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, ItalyInstituto de Biomedicina de Sevilla-CSIC-Universidad de SevillaHospital Universitario Virgen del Rocío, Department of Pathology, Avda. Manuel Siurot S/N, 41013 Seville, SpainRed Temática de Investigación Cooperativa en Cáncer (RTICC)ISCIII, Madrid, SpainServicio de Anatomía PatológicaHospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, SpainHuman Genetics GroupDepartamento de Biología del Cáncer, Spanish National Cancer Research Centre (CNIO)-CIBERER, Madrid, SpainDepartment of Technology and HealthIstituto Superiore di Sanità, Rome, Italy
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Popkie A, Kakarala M, Graveel C. Genetic and Environmental Effects on Stem Cells and Breast Cancer. CURRENT PATHOBIOLOGY REPORTS 2014. [DOI: 10.1007/s40139-013-0037-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Short telomeres are frequent in hereditary breast tumors and are associated with high tumor grade. Breast Cancer Res Treat 2013; 141:231-42. [DOI: 10.1007/s10549-013-2696-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 09/02/2013] [Indexed: 01/05/2023]
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Andrés R, Pajares I, Balmaña J, Llort G, Ramón y Cajal T, Chirivella I, Aguirre E, Robles L, Lastra E, Pérez-Segura P, Bosch N, Yagüe C, Lerma E, Godino J, Miramar MD, Moros M, Astier P, Saez B, Vidal MJ, Arcusa A, Ramón y Cajal S, Calvo MT, Tres A. Association of BRCA1 germline mutations in young onset triple-negative breast cancer (TNBC). Clin Transl Oncol 2013; 16:280-4. [DOI: 10.1007/s12094-013-1070-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 06/16/2013] [Indexed: 11/24/2022]
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Bane A, Viloria-Petit A, Pinnaduwage D, Mulligan AM, O'Malley FP, Andrulis IL. Clinical-pathologic significance of cancer stem cell marker expression in familial breast cancers. Breast Cancer Res Treat 2013; 140:195-205. [PMID: 23813303 PMCID: PMC3706716 DOI: 10.1007/s10549-013-2591-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 05/29/2013] [Indexed: 01/16/2023]
Abstract
Human breast cancer cells with a CD44+/CD24−/low or ALDH1+ phenotype have been demonstrated to be enriched for cancer stem cells (CSCs) using in vitro and in vivo techniques. The aim of this study was to determine the association between CD44+/CD24−/low and ALDH1 expression with clinical–pathologic tumor characteristics, tumor molecular subtype, and survival in a well characterized collection of familial breast cancer cases. 364 familial breast cancers from the Ontario Familial Breast Cancer Registry (58 BRCA1-associated, 64 BRCA2-associated, and 242 familial non-BRCA1/2 cancers) were studied. Each tumor had a centralized pathology review performed. TMA sections of all tumors were analyzed for the expression of ER, PR, HER2, CK5, CK14, EGFR, CD44, CD24, and ALDH1. The Chi square test or Fisher’s exact test was used to analyze the marker associations with clinical–pathologic tumor variables, molecular subtype and genetic subtype. Analyses of the association of overall survival (OS) with marker status were conducted using Kaplan–Meier plots and log-rank tests. The CD44+/CD24−/low and ALDH1+ phenotypes were identified in 16% and 15% of the familial breast cancer cases, respectively, and associated with high-tumor grade, a high-mitotic count, and component features of the medullary type of breast cancer. CD44+/CD24−/low and ALDH1 expression in this series were further associated with the basal-like molecular subtype and the CD44+/CD24−/low phenotype was independently associated with BRCA1 mutational status. The currently accepted breast CSCs markers are present in a minority of familial breast cancers. Whereas the presence of these markers is correlated with several poor prognostic features and the basal-like subtype of breast cancer, they do not predict OS.
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Affiliation(s)
- Anita Bane
- Department of Pathology and Molecular Medicine, Juravinski Hospital and Cancer Centre, McMaster University, 711 Concession St., Hamilton, ON, Canada.
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Abou-Bakr AA, Eldweny HI. p16 expression correlates with basal-like triple-negative breast carcinoma. Ecancermedicalscience 2013; 7:317. [PMID: 23717338 PMCID: PMC3660155 DOI: 10.3332/ecancer.2013.317] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Indexed: 12/31/2022] Open
Abstract
Background: Basal-like breast carcinoma (BLBC) has attracted considerable attention over the past few years. It has been suggested that tumours expressing basal markers have a more aggressive clinical behaviour. However, a molecular basis for this disease remains unclear, and it lacks currently used therapeutic targets. Therefore developing a novel treatment strategy is crucial for improving the prognosis. The aim of this study was to characterise the immunohistochemical (IHC) expression of p16 in patients with BLBC compared with non-BLBC. Materials and methods: Eighty-five cases of grade-3 invasive ductal carcinomas not otherwise specified (IDC-NOS) were analyzed. Immunohistochemical stains for oestrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor type 2 (HER2), cytokeratin (CK) 5/6, epidermal growth factor receptor (EGFR) and p16 were performed. BLBC was defined as ER-, PR-, Her2- and CK5/6+, and/or EGFR+. Results: Twenty cases were categorised as BLBC versus 65 as non-basal. High mitotic count and presence of necrosis were associated with basal-like phenotype. Distant metastasis developed in 40% of cases of BLBC with frequent spread to brain and lung. p16 had significantly higher expression in the basal subgroup (80% versus 50.8%, P = 0.04). Patients with BLBCs were found to have a lower disease-free survival (DFS) rate (60% versus 70.8%, P = 0.03). Conclusion: BLBC typically demonstrates a unique profile. p16 is frequently expressed in breast cancers with basal-like phenotype; this suggests that p16 may play a role in the poor prognosis of this tumour, and it may be used in the development of a targeted therapy that will result in improved patient prognostication and outcome.
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Affiliation(s)
- Amany A Abou-Bakr
- Department of Pathology, National Cancer Institute, Cairo University, Egypt
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Hassanein M, Huiart L, Bourdon V, Rabayrol L, Geneix J, Nogues C, Peyrat JP, Gesta P, Meynard P, Dreyfus H, Petrot D, Lidereau R, Noguchi T, Eisinger F, Extra JM, Viens P, Jacquemier J, Sobol H. Prediction of BRCA1 germ-line mutation status in patients with breast cancer using histoprognosis grade, MS110, Lys27H3, vimentin, and KI67. Pathobiology 2013; 80:219-27. [PMID: 23614934 DOI: 10.1159/000339432] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Accepted: 05/08/2012] [Indexed: 01/30/2023] Open
Abstract
Family structure, lack of reliable information, cost, and delay are usual concerns when deciding to perform BRCA analyses. Testing breast cancer tissues with four antibodies (MS110, lys27H3, vimentin, and KI67) in addition to grade evaluation enabled us to rapidly select patients for genetic testing identification. We constituted an initial breast cancer tissue microarray, considered as a learning set, comprising 27 BRCA1 and 81 sporadic tumors. A second independent validation set of 28 BRCA1 tumors was matched to 28 sporadic tumors using the same original conditions. We investigated morphological parameters and 21 markers by immunohistochemistry. A logistic regression model was used to select the minimal number of markers providing the best model to predict BRCA1 status. The model was applied to the validation set to estimate specificity and sensibility. In the initial set, univariate analyses identified 11 markers significantly associated with BRCA1 status. Then, the best multivariate model comprised only grade 3, MS110, Lys27H3, vimentin, and KI67. When applied to the validation set, BRCA1 tumors were correctly classified with a sensitivity of 83% and a specificity of 81%. The performance of this model was superior when compared to other profiles. This study offers a new rapid and cost-effective method for the prescreening of patients at high risk of being BRCA1 mutation carriers, to guide genetic testing, and finally to provide appropriate preventive measures, advice, and treatments including targeted therapy to patients and their families.
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Affiliation(s)
- Mohamed Hassanein
- Department of Cancer Genetics/CIC-P Inserm 9502, Paoli Calmettes Institute, University of Aix-Marseille II, Marseille, France
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The complex genetic landscape of familial breast cancer. Hum Genet 2013; 132:845-63. [PMID: 23552954 DOI: 10.1007/s00439-013-1299-y] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 03/21/2013] [Indexed: 01/19/2023]
Abstract
Familial breast cancer represents a minor percentage of all human breast cancers. Mutations in two high susceptibility genes BRCA1 and BRCA2 explain around 25 % of familial breast cancers, while other high, moderate and low susceptibility genes explain up to 20 % more of breast cancer families. Thus, it is important to decipher the genetic architecture of families that show no mutations to improve genetic counselling. The comprehensive description of familial breast cancer using different techniques and platforms has shown to be very valuable for better patient diagnosis, tumour surveillance, and ultimately patient treatment. This review focuses on the complex landscape of pathological, protein, genetic and genomic features associated with BRCA1-, BRCA2-, and non-BRCA1/BRCA2-related cancers described up to date. Special emphasis deserves the coexistence of distinct molecular breast cancer subtypes, the development of tumour classifiers to predict BRCA1/2 mutations, and the last insights from recent whole genome sequencing studies and miRNA profiling.
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Carraro DM, Koike Folgueira MAA, Garcia Lisboa BC, Ribeiro Olivieri EH, Vitorino Krepischi AC, de Carvalho AF, de Carvalho Mota LD, Puga RD, do Socorro Maciel M, Michelli RAD, de Lyra EC, Grosso SHG, Soares FA, Achatz MIADSW, Brentani H, Moreira-Filho CA, Brentani MM. Comprehensive analysis of BRCA1, BRCA2 and TP53 germline mutation and tumor characterization: a portrait of early-onset breast cancer in Brazil. PLoS One 2013; 8:e57581. [PMID: 23469205 PMCID: PMC3586086 DOI: 10.1371/journal.pone.0057581] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Accepted: 01/22/2013] [Indexed: 11/25/2022] Open
Abstract
Germline mutations in BRCA1, BRCA2 and TP53 genes have been identified as one of the most important disease-causing issues in young breast cancer patients worldwide. The specific defective biological processes that trigger germline mutation-associated and -negative tumors remain unclear. To delineate an initial portrait of Brazilian early-onset breast cancer, we performed an investigation combining both germline and tumor analysis. Germline screening of the BRCA1, BRCA2, CHEK2 (c.1100delC) and TP53 genes was performed in 54 unrelated patients <35 y; their tumors were investigated with respect to transcriptional and genomic profiles as well as hormonal receptors and HER2 expression/amplification. Germline mutations were detected in 12 out of 54 patients (22%) [7 in BRCA1 (13%), 4 in BRCA2 (7%) and one in TP53 (2%) gene]. A cancer familial history was present in 31.4% of the unrelated patients, from them 43.7% were carriers for germline mutation (37.5% in BRCA1 and in 6.2% in the BRCA2 genes). Fifty percent of the unrelated patients with hormone receptor-negative tumors carried BRCA1 mutations, percentage increasing to 83% in cases with familial history of cancer. Over-representation of DNA damage-, cellular and cell cycle-related processes was detected in the up-regulated genes of BRCA1/2-associated tumors, whereas cell and embryo development-related processes were over-represented in the up-regulated genes of BRCA1/2-negative tumors, suggesting distinct mechanisms driving the tumorigenesis. An initial portrait of the early-onset breast cancer patients in Brazil was generated pointing out that hormone receptor-negative tumors and positive familial history are two major risk factors for detection of a BRCA1 germline mutation. Additionally, the data revealed molecular factors that potentially trigger the tumor development in young patients.
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Affiliation(s)
- Dirce Maria Carraro
- Laboratory of Genomics and Molecular Biology, A.C. Camargo Hospital, São Paulo, Brazil.
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Ripamonti CB, Colombo M, Mondini P, Siranoush M, Peissel B, Bernard L, Radice P, Carcangiu ML. First description of an acinic cell carcinoma of the breast in a BRCA1 mutation carrier: a case report. BMC Cancer 2013; 13:46. [PMID: 23374397 PMCID: PMC3636039 DOI: 10.1186/1471-2407-13-46] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 01/30/2013] [Indexed: 12/12/2022] Open
Abstract
Background Acinic cell carcinoma (ACC) is a rare malignant epithelial neoplasm characterized by the presence of malignant tubular acinar exocrine gland structures. Diagnosis is generally made in salivary glands and in the pancreas. ACC of the breast has been reported in few cases only. Carriers of inherited mutations in the BRCA1 gene are prone to the development of breast cancer, mainly invasive ductal or medullary type carcinomas. We describe for the first time a BRCA1 mutation carrier with a diagnosis of ACC of the breast. Case presentation The patient developed an invasive ductal carcinoma (IDC) at the age of 40 years and an ACC in the contralateral breast at 44 years. Immunohistochemical examination of the ACC revealed a triple negative status (i.e., negativity for estrogen receptor, progesterone receptor and HER2 protein) and positivity for p53. Using a combination of loss of heterozygosity (LOH) and sequencing analyses, the loss of the wild-type BRCA1 allele was detected in both the ACC and the IDC. In addition, two different somatic TP53 mutations, one in the ACC only and another one in the IDC only, were observed. Conclusion Both the immunohistochemical and molecular features observed in the ACC are typical of BRCA1-associated breast cancers and suggest an involvement of the patient’s germline mutation in the disease. The occurrence of rare histological types of breast cancers, including malignant phyllodes tumor, atypical medullary carcinoma and metaplastic carcinoma, in BRCA1 mutation carriers has been already reported. Our findings further broaden the spectrum of BRCA1-associated breast malignancies.
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Affiliation(s)
- Carla B Ripamonti
- Unit of Molecular Bases of Genetic Risk and Genetic Testing, Department of Preventive and Predictive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
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Tracing the cellular origin of cancer. Nat Cell Biol 2013; 15:126-34. [DOI: 10.1038/ncb2657] [Citation(s) in RCA: 205] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 11/20/2012] [Indexed: 12/13/2022]
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Shabbeer S, Omer D, Berneman D, Weitzman O, Alpaugh A, Pietraszkiewicz A, Metsuyanim S, Shainskaya A, Papa MZ, Yarden RI. BRCA1 targets G2/M cell cycle proteins for ubiquitination and proteasomal degradation. Oncogene 2012; 32:5005-16. [PMID: 23246971 DOI: 10.1038/onc.2012.522] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 09/25/2012] [Accepted: 10/04/2012] [Indexed: 12/27/2022]
Abstract
The BRCA1 tumor suppressor protein heterodimerizes with its partner protein, BARD1, via the RING domain present in both proteins. The heterodimer contains an E3 ubiquitin ligase activity and participates in multiple cellular functions such as cell cycle control, DNA repair and regulation of gene transcription, collectively aimed at maintaining genomic stability and tumor suppression. Yet, the precise role of BRCA1 E3 ligase in these cellular functions is poorly understood. We present data showing that BRCA1 ubiquitinates G2/M cell cycle proteins, cyclin B and Cdc25C, leading to their accelerated degradation via a mechanism that is independent of APC/C. BRCA1-dependent degradation of cyclin B and Cdc25C is reversed by proteasome inhibitors and is enhanced following DNA damage, which may represent a possible mechanism to prevent cyclin B and Cdc25C accumulation, a requirement for mitotic entry. Our data provide mechanistic insight into how BRCA1 E3 ligase activity regulates the G2/M cell cycle checkpoint and, thus, contributes to maintenance of genomic stability.
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Affiliation(s)
- S Shabbeer
- 1] Department of Human Science, SNHS, Georgetown University Medical Center, Washington, DC, USA [2] Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
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Stecklein SR, Jensen RA. Identifying and exploiting defects in the Fanconi anemia/BRCA pathway in oncology. Transl Res 2012; 160:178-97. [PMID: 22683426 DOI: 10.1016/j.trsl.2012.01.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 01/18/2012] [Accepted: 01/19/2012] [Indexed: 01/07/2023]
Abstract
Defects in components of DNA repair pathways are responsible for numerous hereditary cancer syndromes and are also common in many sporadic malignancies. Inherited mutations in the breast cancer susceptibility genes BRCA1 and BRCA2 or components of the Fanconi anemia (FA) complex incite genomic instability and predispose to malignancy. The products of the BRCA and FA genes participate in a conserved DNA damage repair pathway that is responsible for repairing interstrand crosslinks and double-strand DNA breaks by homologous recombination. While the genetic instability resulting from FA/BRCA dysfunction contributes to cancer pathogenesis, deficiency of these genes also lends to therapeutic exploitation. Crosslinking agents and ionizing radiation induce damage in cancer cells that requires the FA/BRCA pathway to be resolved; thus cancers that are deficient in BRCA1, BRCA2, or any other component of the FA/BRCA pathway are hypersensitive to these agents. Moreover, emerging synthetic lethal strategies offer opportunities to selectively target cancer cells with defects in homologous recombination. Conversely, enhanced activity of the FA/BRCA pathway is responsible for acquired resistance to specific therapeutic agents, suggesting that both dysfunction and hyperfunction of the FA/BRCA repair machinery are rational targets for cancer therapy. Selection of specific cytotoxic agents based on repair capacity may improve responses and enable personalized cytotoxic chemotherapy. This article reviews the FA/BRCA pathway and current approaches to identify deficiencies within it, discusses synthetic lethality and enhanced repair capacity as causes of therapeutic hypersensitivity and resistance, respectively, and highlights recent studies that have linked FA/BRCA pathway function with therapeutic efficacy.
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Affiliation(s)
- Shane R Stecklein
- Department of Pathology and Laboratory Medicine and The University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, KS, USA
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Nassar A, Sussman ZM, Lawson D, Cohen C. Inference of the Basal Epithelial Phenotype in Breast Carcinoma from Differential Marker Expression, Using Tissue Microarrays in Triple Negative Breast Cancer and Women Younger than 35. Breast J 2012; 18:399-405. [DOI: 10.1111/j.1524-4741.2012.01279.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Cancer progression is a dynamic process of clonal adaptation to changing microenvironments. From the single founder cell until the clinical detection of tumours, there are consecutive clonal expansions and a constant acquisition of genetic and epigenetic alterations, events that contribute to the generation of intra-tumor heterogeneity. In breast cancer intra-tumor heterogeneity can arise from the differentiation of stem-like cells along with the clonal selection during tumor progression, and represents a major challenge for the design of effective therapies. To infer breast cancer progression and its response to particular treatments it is important to understand the origins of the inter- and intra-tumor heterogeneity and the forces that control tumor evolution. Insights about the evolution of breast cancer heterogeneity would contribute to the design of most effective therapeutic strategies to target the tumors at single clon level. This review is intended to give a general overview about the origins of breast cancer heterogeneity and its impact in the clinical management of the disease.
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Paredes J, Figueiredo J, Albergaria A, Oliveira P, Carvalho J, Ribeiro AS, Caldeira J, Costa AM, Simões-Correia J, Oliveira MJ, Pinheiro H, Pinho SS, Mateus R, Reis CA, Leite M, Fernandes MS, Schmitt F, Carneiro F, Figueiredo C, Oliveira C, Seruca R. Epithelial E- and P-cadherins: role and clinical significance in cancer. Biochim Biophys Acta Rev Cancer 2012; 1826:297-311. [PMID: 22613680 DOI: 10.1016/j.bbcan.2012.05.002] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 05/09/2012] [Accepted: 05/11/2012] [Indexed: 01/26/2023]
Abstract
E-cadherin and P-cadherin are major contributors to cell-cell adhesion in epithelial tissues, playing pivotal roles in important morphogenetic and differentiation processes during development, and in maintaining integrity and homeostasis in adult tissues. It is now generally accepted that alterations in these two molecules are observed during tumour progression of most carcinomas. Genetic or epigenetic alterations in E- and P-cadherin-encoding genes (CDH1 and CDH3, respectively), or alterations in their proteins expression, often result in tissue disorder, cellular de-differentiation, increased invasiveness of tumour cells and ultimately in metastasis. In this review, we will discuss the major properties of E- and P-cadherin molecules, its regulation in normal tissue, and their alterations and role in cancer, with a specific focus on gastric and breast cancer models.
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Yan M, Xu H, Waddell N, Shield-Artin K, Haviv I, McKay MJ, Fox SB. Enhanced RAD21 cohesin expression confers poor prognosis in BRCA2 and BRCAX, but not BRCA1 familial breast cancers. Breast Cancer Res 2012; 14:R69. [PMID: 22537934 PMCID: PMC3446404 DOI: 10.1186/bcr3176] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 02/26/2012] [Accepted: 04/26/2012] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION The RAD21 gene encodes a key component of the cohesin complex, which is essential for chromosome segregation, and together with BRCA1 and BRCA2, for high-fidelity DNA repair by homologous recombination. Although its expression correlates with early relapse and treatment resistance in sporadic breast cancers, it is unclear whether familial breast cancers behave in a similar manner. METHODS We performed an immunohistochemical analysis of RAD21 expression in a cohort of 94 familial breast cancers (28 BRCA1, 27 BRCA2, and 39 BRCAX) and correlated these data with genotype and clinicopathologic parameters, including survival. In these cancers, we also correlated RAD21 expression with genomic expression profiling and gene copy-number changes and miRNAs predicted to target RAD21. RESULTS No significant differences in nuclear RAD21 expression were observed between BRCA1 (12 (43%) of 28), BRCA2 (12 (44%) of 27), and BRCAX cancers (12 (33%) of 39 (p = 0.598). No correlation was found between RAD21 expression and grade, size, or lymph node, ER, or HER2 status (all P > 0.05). As for sporadic breast cancers, RAD21 expression correlated with shorter survival in grade 3 (P = 0.009) and but not in grade 1 (P = 0.065) or 2 cancers (P = 0.090). Expression of RAD21 correlated with poorer survival in patients treated with chemotherapy (P = 0.036) but not with hormonal therapy (P = 0.881). RAD21 expression correlated with shorter survival in BRCA2 (P = 0.006) and BRCAX (P = 0.008), but not BRCA1 cancers (P = 0.713). Changes in RAD21 mRNA were reflected by genomic changes in DNA copy number (P < 0.001) and by RAD21 protein expression, as assessed with immunohistochemistry (P = 0.047). High RAD21 expression was associated with genomic instability, as assessed by the total number of base pairs affected by genomic change (P = 0.048). Of 15 miRNAs predicted to target RAD21, mir-299-5p inversely correlated with RAD21 expression (P = 0.002). CONCLUSIONS Potential use of RAD21 as a predictive and prognostic marker in familial breast cancers is hence feasible and may therefore take into account the patient's BRCA1/2 mutation status.
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Affiliation(s)
- Max Yan
- Department of Anatomical Pathology, Prince of Wales Hospital, Barker Street, Randwick, 2031, Australia
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Vollebergh MA, Jonkers J, Linn SC. Genomic instability in breast and ovarian cancers: translation into clinical predictive biomarkers. Cell Mol Life Sci 2012; 69:223-45. [PMID: 21922196 PMCID: PMC11114988 DOI: 10.1007/s00018-011-0809-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Revised: 08/18/2011] [Accepted: 08/22/2011] [Indexed: 12/20/2022]
Abstract
Breast and ovarian cancer are among the most common malignancies diagnosed in women worldwide. Together, they account for the majority of cancer-related deaths in women. These cancer types share a number of features, including their association with hereditary cancer syndromes caused by heterozygous germline mutations in BRCA1 or BRCA2. BRCA-associated breast and ovarian cancers are hallmarked by genomic instability and high sensitivity to DNA double-strand break (DSB) inducing agents due to loss of error-free DSB repair via homologous recombination (HR). Recently, poly(ADP-ribose) polymerase inhibitors, a new class of drugs that selectively target HR-deficient tumor cells, have been shown to be highly active in BRCA-associated breast and ovarian cancers. This finding has renewed interest in hallmarks of HR deficiency and the use of other DSB-inducing agents, such as platinum salts or bifunctional alkylators, in breast and ovarian cancer patients. In this review we discuss the similarities between breast and ovarian cancer, the hallmarks of genomic instability in BRCA-mutated and BRCA-like breast and ovarian cancers, and the efforts to search for predictive markers of HR deficiency in order to individualize therapy in breast and ovarian cancer.
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Affiliation(s)
- Marieke A. Vollebergh
- Division of Molecular Biology, Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
- Division of Medical Oncology, Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Jos Jonkers
- Division of Molecular Biology, Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Sabine C. Linn
- Division of Molecular Biology, Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
- Division of Medical Oncology, Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
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