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Brantley KD, Tamimi RM. The association between infectious agents and breast cancer: a review of the epidemiologic evidence. Breast Cancer Res Treat 2024; 207:235-252. [PMID: 38971906 DOI: 10.1007/s10549-024-07388-6] [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: 04/26/2024] [Accepted: 05/22/2024] [Indexed: 07/08/2024]
Abstract
PURPOSE Several viruses have been casually linked to human cancers, including cervical, nasopharyngeal, liver, sarcoma, and Merkel cell carcinomas. However, the etiologic contribution of viral infections to breast cancer, the number one incident cancer among women worldwide, is not well established. Among studies exploring associations of viruses with breast cancer, potential linkages have been identified between breast cancer and five viruses: beta retrovirus, (i.e., mouse mammary tumor virus), human papillomavirus, Epstein Barr virus. bovine leukemia virus, and human cytomegalovirus. METHODS In this review, we provide a comprehensive evaluation of epidemiological ecologic, case-control, case-only, and cohort studies investigating these associations. We discuss results from several existing reviews and meta-analyses, evaluate epidemiological studies published in the past five years, and assess the relationship between these viruses and breast tumor clinicopathological factors. RESULTS The strongest epidemiological evidence for a viral role in breast cancer exists for MMTV and HPV, though limitations include lack of prospective studies for MMTV and potential detection bias in HPV studies. Viral detection challenges have limited studies of EBV and HCMV. Fewer studies have evaluated BLV, and though it has been associated with higher risk of breast cancer, sample sizes are quite small. CONCLUSION: While epidemiologic evidence exists for an association between these five viruses and breast cancer, various methodological issues and lack of prospective studies preclude robust conclusions. Future research should prioritize establishing a temporal relationship between infection and disease, minimizing misclassification of detection assays, and further exploring the influence of co-infections.
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Affiliation(s)
- Kristen D Brantley
- Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MS, USA.
| | - Rulla M Tamimi
- Department of Population Health Sciences, Weill Cornell Medicine, New York, USA
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Rossi C, Inzani FS, Cesari S, Rizzo G, Paulli M, Pedrazzoli P, Lasagna A, Lucioni M. The Role of Oncogenic Viruses in the Pathogenesis of Sporadic Breast Cancer: A Comprehensive Review of the Current Literature. Pathogens 2024; 13:451. [PMID: 38921749 PMCID: PMC11206847 DOI: 10.3390/pathogens13060451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 06/27/2024] Open
Abstract
Breast cancer is the most common malignancy in the female sex; although recent therapies have significantly changed the natural history of this cancer, it remains a significant challenge. In the past decade, evidence has been put forward that some oncogenic viruses may play a role in the development of sporadic breast cancer; however, data are scattered and mostly reported as sparse case series or small case-control studies. In this review, we organize and report current evidence regarding the role of high-risk human papillomavirus, mouse mammary tumor virus, Epstein-Barr virus, cytomegalovirus, bovine leukemia virus, human polyomavirus 2, and Merkel cell polyomavirus in the pathogenesis of breast cancer.
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Affiliation(s)
- Chiara Rossi
- Section of Anatomic Pathology, Cerba HealthCare Lombardia, 20139 Milan, Italy
| | - Frediano Socrate Inzani
- Department of Molecular Medicine, Unit of Anatomic Pathology, University of Pavia, IRCCS San Matteo Hospital Foundation, 27100 Pavia, Italy
| | - Stefania Cesari
- Department of Molecular Medicine, Unit of Anatomic Pathology, University of Pavia, IRCCS San Matteo Hospital Foundation, 27100 Pavia, Italy
| | - Gianpiero Rizzo
- Unit of Medical Oncology, IRCCS San Matteo Hospital Foundation, 27100 Pavia, Italy
| | - Marco Paulli
- Department of Molecular Medicine, Unit of Anatomic Pathology, University of Pavia, IRCCS San Matteo Hospital Foundation, 27100 Pavia, Italy
| | - Paolo Pedrazzoli
- Unit of Medical Oncology, IRCCS San Matteo Hospital Foundation, 27100 Pavia, Italy
| | - Angioletta Lasagna
- Unit of Medical Oncology, IRCCS San Matteo Hospital Foundation, 27100 Pavia, Italy
| | - Marco Lucioni
- Department of Molecular Medicine, Unit of Anatomic Pathology, University of Pavia, IRCCS San Matteo Hospital Foundation, 27100 Pavia, Italy
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Fekete Z, Tertan BO, Raduly L, Eniu DT, Buiga R, Galatar M, Berindan-Neagoe I. Prevalence of MMTV-like sequences in breast cancer samples in Romanian patients-there is a geographic difference compared to the Western world. Infect Agent Cancer 2023; 18:39. [PMID: 37340312 DOI: 10.1186/s13027-023-00486-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 02/02/2023] [Indexed: 06/22/2023] Open
Abstract
BACKGROUND Breast cancer, although the most frequently diagnosed malignant tumor in humans, has a less clear etiology compared to other frequent cancer types. Mouse-mammary tumor virus (MMTV) is involved in breast cancer in mice and dogs and might play a role in the etiology of some breast cancers in humans, since an MMTV-like sequence was identified in 20-40% of breast cancer samples in Western Europe, USA, Australia and some other parts of the world. The purpose of our study was to identify MMTV-like DNA sequences in breast tissue samples from breast cancer patients who underwent curative surgery in our regional academic center in Romania, EU. METHODS We selected 75 patients with non-metastatic breast cancer treated surgically with curative intent, who did not undergo any neoadjuvant treatment. Out of these patients, 50 underwent radical lumpectomy and 25 modified radical mastectomy. Based on previous reports in the literature we searched using PCR the MMTV-like DNA env sequence in the breast cancer tissue and normal breast tissue obtained from the same patients. RESULTS None of the examined samples was positive for MMTV-like target sequences on PCR. CONCLUSIONS We could not prove that MMTV plays a role in the etiology of breast cancer in our patient group. This finding is similar to those from publications of other geographically related research groups.
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Affiliation(s)
- Zsolt Fekete
- Oncology-Radiotherapy, Department of Oncology, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.
- Institute of Oncology "Prof Dr. Ion Chiricuță", Radiotherapy III, Cluj-Napoca, Romania.
| | | | - Lajos Raduly
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Dan Tudor Eniu
- Oncological Surgery and Gynecologic Oncology, Department of Oncology, "Iuliu Hațieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
- Surgery Department, Institute of Oncology "Prof Dr. Ion Chiricuță", Cluj-Napoca, Romania
| | - Rares Buiga
- Pathology Department, Institute of Oncology "Prof Dr. Ion Chiricuță", Cluj-Napoca, Romania
| | - Mihaela Galatar
- Pathology Department, Institute of Oncology "Prof Dr. Ion Chiricuță", Cluj-Napoca, Romania
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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4
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Hochman J, Braitbard O. Life after Cleavage: The Story of a β-Retroviral (MMTV) Signal Peptide-From Murine Lymphoma to Human Breast Cancer. Viruses 2022; 14:v14112435. [PMID: 36366533 PMCID: PMC9694287 DOI: 10.3390/v14112435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/31/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
An increasing body of evidence in recent years supports an association of the betaretrovirus mouse mammary tumor virus (MMTV) with human breast cancer. This is an issue that still raises heated controversy. We have come to address this association using the signal peptide p14 of the MMTV envelope precursor protein as a key element of our strategy. In addition to its signal peptide function, p14 has some significant post endoplasmic reticulum (ER)-targeting characteristics: (1) it localizes to nucleoli where it binds key proteins (RPL5 and B23) involved (among other activities) in the regulation of nucleolar stress response, ribosome biogenesis and p53 stabilization; (2) p14 is a nuclear export factor; (3) it is expressed on the cell surface of infected cells, and as such, is amenable to, and successfully used, in preventive vaccination against experimental tumors that harbor MMTV; (4) the growth of such tumors is impaired in vivo using a combination of monoclonal anti-p14 antibodies or adoptive T-cell transfer treatments; (5) p14 is a phospho-protein endogenously phosphorylated by two different serine kinases. The phosphorylation status of the two sites determines whether p14 will function in an oncogenic or tumor-suppressing capacity; (6) transcriptional activation of genes (RPL5, ErbB4) correlates with the oncogenic potential of MMTV; (7) finally, polyclonal anti-p14 antibodies have been applied in immune histochemistry analyses of breast cancer cases using formalin fixed paraffin-embedded sections, supporting the associations of MMTV with the disease. Taken together, the above findings constitute a road map towards the diagnosis and possible prevention and treatment of MMTV-associated breast cancer.
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Affiliation(s)
- Jacob Hochman
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Science, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
- Correspondence: ; Tel.: +972-54-441-4370
| | - Ori Braitbard
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Science, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
- Department of Bioinformatics, The Faculty of Life and Health Sciences, Jerusalem College of Technology, Jerusalem 9372115, Israel
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Bevilacqua G. The Viral Origin of Human Breast Cancer: From the Mouse Mammary Tumor Virus (MMTV) to the Human Betaretrovirus (HBRV). Viruses 2022; 14:v14081704. [PMID: 36016325 PMCID: PMC9412291 DOI: 10.3390/v14081704] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/25/2022] [Accepted: 07/29/2022] [Indexed: 02/04/2023] Open
Abstract
A Human Betaretrovirus (HBRV) has been identified in humans, dating as far back as about 4500 years ago, with a high probability of it being acquired by our species around 10,000 years ago, following a species jump from mice to humans. HBRV is the human homolog of the MMTV (mouse mammary tumor virus), which is the etiological agent of murine mammary tumors. The hypothesis of a HMTV (human mammary tumor virus) was proposed about 50 years ago, and has acquired a solid scientific basis during the last 30 years, with the demonstration of a robust link with breast cancer and with PBC, primary biliary cholangitis. This article summarizes most of what is known about MMTV/HMTV/HBRV since the discovery of MMTV at the beginning of last century, to make evident both the quantity and the quality of the research supporting the existence of HBRV and its pathogenic role. Here, it is sufficient to mention that scientific evidence includes that viral sequences have been identified in breast-cancer samples in a worldwide distribution, that the complete proviral genome has been cloned from breast cancer and patients with PBC, and that saliva contains HBRV, as a possible route of inter-human infection. Controversies that have arisen concerning results obtained from human tissues, many of them outdated by new scientific evidence, are critically discussed and confuted.
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Parisi F, Lessi F, Menicagli M, Civita P, Liotti R, Millanta F, Freer G, Pistello M, Mazzanti CM, Poli A. Presence of a mouse mammary tumour virus-like in feline lymphomas: a preliminary study. Infect Agent Cancer 2022; 17:35. [PMID: 35739602 PMCID: PMC9219121 DOI: 10.1186/s13027-022-00449-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 06/11/2022] [Indexed: 01/13/2023] Open
Abstract
The mouse mammary tumour virus (MMTV) is implicated in the aetiology of murine mammary carcinomas and a variant of it, the type B leukemogenic virus, can cause murine thymic lymphomas. Interestingly, a MMTV-like virus is suspected to be involved in human breast cancer and feline mammary carcinomas. However, to date, no cases of MMTV-like sequence amplifications have been described in lymphoid neoplasms in veterinary literature. The aim of this study was to investigate the presence of env nucleotide sequences and protein 14 (p14) of a MMTV-like virus in fifty-three feline lymphoma samples. Our results show that MMTV-like sequences were detected in 5/53 tumours (9.4%): three gastrointestinal lymphomas (one B-type diffuse large, one B-type small non-cleaved, and one T-type diffuse mixed lymphoma); and two nasal lymphomas (one B-type diffuse small cleaved lymphoma and one B-type diffuse mixed lymphoma). P14 expression was detected in the cytoplasm, and rarely in nuclei, exclusively of neoplastic cells from PCR-positive tumours. The correlation between the presence of the MMTV-env like sequences (MMTVels) and p14 antigen was statistically significant in nasal lymphomas. All cats with MMTVels-positive lymphoma had a history of contact with the outdoor environment and/or catteries, and two deceased subjects shared their environment with cats that also died of lymphoma. In conclusion, this study succeeds in demonstrating the presence of MMTVels and p14 in feline lymphomas. The characterization of the immunophenotype of MMTVels-positive lymphomas could contribute to the understanding of a possible role of a MMTV-like virus in feline tumour aetiology. The significant association between the presence of the viral sequences in lymphoid tumours and their nasal localization, together with the data collected through supplementary anamnesis, should be further analysed in order to understand the epidemiology of the virus.
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Affiliation(s)
- Francesca Parisi
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge, 2, 56124, Pisa, Italy
| | | | | | - Prospero Civita
- School of Pharmacy and Pharmaceutical Sciences, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK
| | | | - Francesca Millanta
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge, 2, 56124, Pisa, Italy
| | - Giulia Freer
- Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
| | - Mauro Pistello
- Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
| | | | - Alessandro Poli
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge, 2, 56124, Pisa, Italy.
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Mouse Mammary Tumour Virus (MMTV) in Human Breast Cancer—The Value of Bradford Hill Criteria. Viruses 2022; 14:v14040721. [PMID: 35458452 PMCID: PMC9028876 DOI: 10.3390/v14040721] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 01/27/2023] Open
Abstract
For many decades, the betaretrovirus, mouse mammary tumour virus (MMTV), has been a causal suspect for human breast cancer. In recent years, substantial new evidence has been developed. Based on this evidence, we hypothesise that MMTV has a causal role. We have used an extended version of the classic A. Bradford Hill causal criteria to assess the evidence. 1. Identification of MMTV in human breast cancers: The MMTV 9.9 kb genome in breast cancer cells has been identified. The MMTV genome in human breast cancer is up to 98% identical to MMTV in mice. 2. Epidemiology: The prevalence of MMTV positive human breast cancer is about 35 to 40% of breast cancers in Western countries and 15 to 20% in China and Japan. 3. Strength of the association between MMTV and human breast cancer: Consistency—MMTV env gene sequences are consistently five-fold higher in human breast cancer as compared to benign and normal breast controls. 4. Temporality (timing) of the association: MMTV has been identified in benign and normal breast tissues up to 10 years before the development of MMTV positive breast cancer in the same patient. 5. Exposure: Exposure of humans to MMTV leads to development of MMTV positive human breast cancer. 6. Experimental evidence: MMTVs can infect human breast cells in culture; MMTV proteins are capable of malignantly transforming normal human breast epithelial cells; MMTV is a likely cause of biliary cirrhosis, which suggests a link between MMTV and the disease in humans. 7. Coherence—analogy: The life cycle and biology of MMTV in humans is almost the same as in experimental and feral mice. 8. MMTV Transmission: MMTV has been identified in human sputum and human milk. Cereals contaminated with mouse fecal material may transmit MMTV. These are potential means of transmission. 9. Biological plausibility: Retroviruses are the established cause of human cancers. Human T cell leukaemia virus type I (HTLV-1) causes adult T cell leukaemia, and human immunodeficiency virus infection (HIV) is associated with lymphoma and Kaposi sarcoma. 10. Oncogenic mechanisms: MMTV oncogenesis in humans probably differs from mice and may involve the enzyme APOBEC3B. Conclusion: In our view, the evidence is compelling that MMTV has a probable causal role in a subset of approximately 40% of human breast cancers.
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8
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Parisi F, Muscatello LV, Civita P, Lessi F, Menicagli M, Millanta F, Brunetti B, Benazzi C, Sarli G, Freer G, Pistello M, Mazzanti CM, Poli A. Pathological Features and Molecular Phenotype of MMTV Like-Positive Feline Mammary Carcinomas. Animals (Basel) 2021; 11:ani11102821. [PMID: 34679842 PMCID: PMC8532932 DOI: 10.3390/ani11102821] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Mouse mammary tumour virus-like (MMTV-like) is suspected to be involved in human breast cancer and feline mammary carcinomas (FMCs). We previously reported the identification of MMTV-like sequences and viral protein in six of 78 FMCs collected in Tuscany, Italy. To corroborate this finding, FMCs samples collected from a different geographic area were investigated. MMTV-like sequences and p14 protein were identified in three of 24 FMCs collected at the University of Bologna, one tubular carcinoma, one tubulopapillary carcinoma and one ductal carcinoma. All the examined FMCs from Pisa and Bologna were submitted to immunohistochemistry for molecular phenotype characterization. Of the nine positive FMCs, six were basal-like and three luminal-like. This study highlights the presence of MMTV-like sequences and protein in FMCs of different geographic areas. The characterization of molecular phenotype could contribute to understand the possible role of MMTV-like virus in FMC biological behaviour. Abstract In the last few years MMTV-like nucleotide sequences were detected in some feline and canine mammary tumours. Due to the confirmed role of cats in the epidemiology of the MMTV-like virus, the aim of this study was to investigate the main pathological features of positive feline mammary carcinomas (FMCs). Twenty-four FMCs were collected at the University of Bologna, submitted to laser microdissection and analysed by nested fluorescence-PCR using primer sets specific for MMTV env sequence. For immunohistochemistry, an antibody against MMTV protein 14 (p14) was used. MMTV-like sequences were detected in three out of 24 FMCs (12.5%), one tubular carcinoma, one tubulopapillary carcinoma and one ductal carcinoma. All PCR-positive tumours were also positive for p14. Multiple nucleotide alignment has shown similarity to MMTV ranging from 98% to 100%. All the 102 examined FMCs were submitted to immunohistochemistry for molecular phenotyping. Of the nine MMTV-like positive FMCs, six were basal-like and three luminal-like. Our results demonstrate MMTV-like sequences and protein in FMCs of different geographic areas. Molecular phenotyping could contribute to understand the possible role of MMTV-like virus in FMC tumor biology.
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Affiliation(s)
- Francesca Parisi
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge n. 2, 56124 Pisa, Italy; (F.P.); (F.M.)
| | - Luisa Vera Muscatello
- Department of Veterinary Sciences, University of Bologna, Via Tolara di sopra n. 43, 40064 Ozzano dell’Emilia, Italy; (L.V.M.); (B.B.); (C.B.); (G.S.)
| | - Prospero Civita
- School of Pharmacy and Pharmaceutical Sciences, College of Biomedical and Life Sciences, Cardiff University, Cardiff CF14 4EP, UK;
| | - Francesca Lessi
- Fondazione Pisana per la Scienza Onlus, Via Ferruccio Giovannini n. 13, 56017 San Giuliano Terme, Italy; (F.L.); (M.M.); (C.M.M.)
| | - Michele Menicagli
- Fondazione Pisana per la Scienza Onlus, Via Ferruccio Giovannini n. 13, 56017 San Giuliano Terme, Italy; (F.L.); (M.M.); (C.M.M.)
| | - Francesca Millanta
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge n. 2, 56124 Pisa, Italy; (F.P.); (F.M.)
| | - Barbara Brunetti
- Department of Veterinary Sciences, University of Bologna, Via Tolara di sopra n. 43, 40064 Ozzano dell’Emilia, Italy; (L.V.M.); (B.B.); (C.B.); (G.S.)
| | - Cinzia Benazzi
- Department of Veterinary Sciences, University of Bologna, Via Tolara di sopra n. 43, 40064 Ozzano dell’Emilia, Italy; (L.V.M.); (B.B.); (C.B.); (G.S.)
| | - Giuseppe Sarli
- Department of Veterinary Sciences, University of Bologna, Via Tolara di sopra n. 43, 40064 Ozzano dell’Emilia, Italy; (L.V.M.); (B.B.); (C.B.); (G.S.)
| | - Giulia Freer
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Savi n. 10, 56126 Pisa, Italy; (G.F.); (M.P.)
| | - Mauro Pistello
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Savi n. 10, 56126 Pisa, Italy; (G.F.); (M.P.)
| | - Chiara Maria Mazzanti
- Fondazione Pisana per la Scienza Onlus, Via Ferruccio Giovannini n. 13, 56017 San Giuliano Terme, Italy; (F.L.); (M.M.); (C.M.M.)
| | - Alessandro Poli
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge n. 2, 56124 Pisa, Italy; (F.P.); (F.M.)
- Correspondence:
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Banerjee S, Wei Z, Tian T, Bose D, Shih NNC, Feldman MD, Khoury T, De Michele A, Robertson ES. Prognostic correlations with the microbiome of breast cancer subtypes. Cell Death Dis 2021; 12:831. [PMID: 34482363 PMCID: PMC8418604 DOI: 10.1038/s41419-021-04092-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 12/18/2022]
Abstract
Alterations to the natural microbiome are linked to different diseases, and the presence or absence of specific microbes is directly related to disease outcomes. We performed a comprehensive analysis with unique cohorts of the four subtypes of breast cancer (BC) characterized by their microbial signatures, using a pan-pathogen microarray strategy. The signature (includes viruses, bacteria, fungi, and parasites) of each tumor subtype was correlated with clinical data to identify microbes with prognostic potential. The subtypes of BC had specific viromes and microbiomes, with ER+ and TN tumors showing the most and least diverse microbiome, respectively. The specific microbial signatures allowed discrimination between different BC subtypes. Furthermore, we demonstrated correlations between the presence and absence of specific microbes in BC subtypes with the clinical outcomes. This study provides a comprehensive map of the oncobiome of BC subtypes, with insights into disease prognosis that can be critical for precision therapeutic intervention strategies.
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Affiliation(s)
- Sagarika Banerjee
- Department of Otorhinolaryngology-Head and Neck Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Zhi Wei
- Department of Computer Science, New Jersey Institute of Technology, Newark, NJ, USA
| | - Tian Tian
- Department of Computer Science, New Jersey Institute of Technology, Newark, NJ, USA
| | - Dipayan Bose
- Department of Otorhinolaryngology-Head and Neck Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Natalie N C Shih
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Michael D Feldman
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Thaer Khoury
- Department of Pathology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Angela De Michele
- Division of Hematology Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Erle S Robertson
- Department of Otorhinolaryngology-Head and Neck Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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10
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Wang FL, Zhang XL, Yang M, Lin J, Yue YF, Li YD, Wang X, Shu Q, Jin HC. Prevalence and characteristics of mouse mammary tumor virus-like virus associated breast cancer in China. Infect Agent Cancer 2021; 16:47. [PMID: 34174934 PMCID: PMC8235620 DOI: 10.1186/s13027-021-00383-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 06/07/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Despite extensive molecular epidemiological studies, the prevalence and characteristics of Mouse Mammary Tumor Virus-Like Virus (MMTV-LV) in Chinese women breast cancer are still unclear. Besides, the prevalence of MMTV-LV in women breast cancer tissue varies in different countries and its dependent factors remain inconclusive. METHODS In the first part of the study, a case-control study was performed. 119 breast cancer samples (84 from Northern China and 35 from Southern China) and 50 breast fibroadenoma specimens were collected from Chinese women patients. MMTV-like env sequence and the homology to MMTV env gene were analysed by semi-nested polymerase chain reaction (PCR). We also explored the association of MMTV-LV prevalence with sample sources (Southern and Northern China) and patients' clinicopathological characteristics. To investigate the dependent factors of the prevalence of MMTV-LV in breast cancer worldwide, a meta-analysis was conducted in the second part of the study. RESULTS We found that the prevalence of MMTV-LV was much higher in breast cancer tissues (17.65%) than that in breast fibroadenoma specimens (4.00%) (P < 0.05). MMTV-LV prevalence in Chinese women breast cancer tissues was significantly different between Southern China (5.71%) and Northern China (22.62%) (P < 0.05). The prevalence of MMTV-LV also associates significantly with expression of HER2, but shows no significant correlation with other parameters. In the meta-analysis, we found that MMTV-LV prevalence in breast cancer tissue was dependent on the distribution of M. domesticus mouse (M. d), M. musculus mouse (M.m) and M.castaneus mouse (M.c) worldwide (P < 0.05). CONCLUSION The distribution of house mice may be a crucial environmental factor that explains the geographic differences in human breast cancer incidence. Our findings may provide a potential avenue of prevention, diagnosis and treatment for breast cancer.
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Affiliation(s)
- Fa-Liang Wang
- Department of Surgical Oncology, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Binsheng Road 3333, Hangzhou, 310052, China.
| | - Xiao-Li Zhang
- Electron Microscope Room, Medical School of Hebei North University, Zhangjiakou, China
| | - Ming Yang
- Department of Surgical Oncology, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Binsheng Road 3333, Hangzhou, 310052, China
| | - Jun Lin
- Department of Medical Oncology, the Second People's Hospital of Jande, Hangzhou, China
| | - Yong-Fang Yue
- Department of Obstetrics and Gynecology, the Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Ya-Dan Li
- Laboratory of Cancer Biology, Department of Medical Oncology, Key lab of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, East Qingchun Road 3, Hangzhou, 310000, China
| | - Xian Wang
- Laboratory of Cancer Biology, Department of Medical Oncology, Key lab of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, East Qingchun Road 3, Hangzhou, 310000, China
| | - Qiang Shu
- Department of Surgical Oncology, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Binsheng Road 3333, Hangzhou, 310052, China. .,Department of Cardiothoracic Surgery, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Binsheng Road 3333, Hangzhou, 310052, China.
| | - Hong-Chuan Jin
- Laboratory of Cancer Biology, Department of Medical Oncology, Key lab of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, East Qingchun Road 3, Hangzhou, 310000, China.
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11
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Abstract
Abstract We have considered viruses and their contribution to breast cancer. Mouse mammary tumour virus The prevalence of mouse mammary tumour virus (MMTV) is 15-fold higher in human breast cancer than in normal and benign human breast tissue controls. Saliva is the most plausible means of transmission. MMTV has been identified in dogs, cats, monkeys, mice and rats. The causal mechanisms include insertional oncogenesis and mutations in the protective enzyme ABOBEC3B. Human papilloma virus The prevalence of high risk human papilloma viruses (HPV) is frequently six fold higher in breast cancer than in normal and benign breast tissue controls. Women who develop HPV associated cervical cancer are at higher than normal risk of developing HPV associated breast cancer. Koilocytes have been identified in breast cancers which is an indication of HPV oncogenicity. The causal mechanisms of HPVs in breast cancer appear to differ from cervical cancer. Sexual activity is the most common form of HPV transmission. HPVs are probably transmitted from the cervix to the breast by circulating extra cellular vesicles. Epstein Barr virus The prevalence of Epstein Barr virus (EBV) is five fold higher in breast cancer than in normal and benign breast tissue controls. EBV is mostly transmitted from person to person via saliva. EBV infection predisposes breast epithelial cells to malignant transformation through activation of HER2/HER3 signalling cascades. EBV EBNA genes contribute to tumour growth and metastasis and have the ability to affect the mesenchymal transition of cells. Bovine leukemia virus Bovine leukemia virus (BLV) infects beef and dairy cattle and leads to various cancers. The prevalence of BLV is double in human breast cancers compared to controls. Breast cancer is more prevalent in red meat eating and cow’s milk consuming populations. BLV may be transmitted to humans from cattle by the consumption of red meat and cow’s milk. Conclusion The evidence that MMTV, high risk HPVs and EBVs have causal roles in human breast cancer is compelling. The evidence with respect to BLV is more limited but it is likely to also have a causal role in human breast cancer. Supplementary Information The online version contains supplementary material available at 10.1186/s13027-021-00366-3.
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Affiliation(s)
- James S Lawson
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia.
| | - Wendy K Glenn
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
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12
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Al Hamad M, Matalka I, Al Zoubi MS, Armogida I, Khasawneh R, Al-Husaini M, Sughayer M, Jaradat S, Al-Nasser AD, Mazzanti CM. Human Mammary Tumor Virus, Human Papilloma Virus, and Epstein-Barr Virus Infection Are Associated With Sporadic Breast Cancer Metastasis. Breast Cancer (Auckl) 2020. [PMID: 33281452 DOI: 10.1177/1178223420976388.] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background Viral cause of sporadic breast cancer (SBC) has been suggested based on the experimental murine model of mammary tumor caused by mouse mammary tumor virus (MMTV), Epstein-Barr virus (EBV), and human papillomavirus (HPV). While some studies have demonstrated the presence of viral sequences of MMTV, HPV, and EBV in breast cancer cells, others failed. These contradictions may be attributed to the geographical distribution of breast cancer incidence and/or technical variations. In the current study, we aimed to investigate the correlation of MMTV, HPV, and EBV infections with the development of breast cancer in Jordanian patients. Methods One hundred SBC tissue samples were subjected to laser capture microdissection for the selection of tumor cells populations. Fluorescence polymerase chain reaction (PCR) was used to detect the presence of the MMTV env-like sequences. Real-time PCR was used for HPV and EBV detection, and EBV was further confirmed by chromogen in situ hybridization (CISH). Results Mouse mammary tumor virus, HPV, and EBV were detected in SBC in 11%, 21%, and 23%, respectively. Only 3 of 52 (5.7%) positive cases demonstrated multiple virus infections. However, 49 of 52 (94%) of the positive cases revealed the presence of 1 type of viral sequences. Consequently, 52% of the studied breast cancer cases were infected with at least 1 type of the aforementioned viruses. Conclusions The current cohort suggests that MMTV, HPV, and EBV have a potential role in the development of breast cancer and adding more reasons to proceed with the quest of a possible viral origin of breast cancer.
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Affiliation(s)
- Mohammad Al Hamad
- Department of Pathology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ismail Matalka
- Department of Pathology and Microbiology, Faculty of Medicine, Jordan University of Science and Technology (JUST), Irbid, Jordan
| | - Mazhar Salim Al Zoubi
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid, Jordan
| | - Ivana Armogida
- Department of Pathology, Pisa University Hospital, Pisa, Italy.,Presently at Illumina Cambridge Ltd, Cambridge, UK
| | - Rawan Khasawneh
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid, Jordan
| | - Maysa Al-Husaini
- Department of Pathology and Laboratory Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Maher Sughayer
- Department of Pathology and Laboratory Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Saied Jaradat
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid, Jordan
| | - Amjad D Al-Nasser
- Department of Statistics, Faculty of Science, Yarmouk University, Irbid, Jordan
| | - Chiara Maria Mazzanti
- Fondazione Pisana per la Scienza, Pisa, Italy.,Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
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13
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Al Hamad M, Matalka I, Al Zoubi MS, Armogida I, Khasawneh R, Al-Husaini M, Sughayer M, Jaradat S, Al-Nasser AD, Mazzanti CM. Human Mammary Tumor Virus, Human Papilloma Virus, and Epstein-Barr Virus Infection Are Associated With Sporadic Breast Cancer Metastasis. BREAST CANCER-BASIC AND CLINICAL RESEARCH 2020; 14:1178223420976388. [PMID: 33281452 PMCID: PMC7691892 DOI: 10.1177/1178223420976388] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/30/2020] [Indexed: 12/16/2022]
Abstract
Background: Viral cause of sporadic breast cancer (SBC) has been suggested based on the
experimental murine model of mammary tumor caused by mouse mammary tumor
virus (MMTV), Epstein-Barr virus (EBV), and human papillomavirus (HPV).
While some studies have demonstrated the presence of viral sequences of
MMTV, HPV, and EBV in breast cancer cells, others failed. These
contradictions may be attributed to the geographical distribution of breast
cancer incidence and/or technical variations. In the current study, we aimed
to investigate the correlation of MMTV, HPV, and EBV infections with the
development of breast cancer in Jordanian patients. Methods: One hundred SBC tissue samples were subjected to laser capture
microdissection for the selection of tumor cells populations. Fluorescence
polymerase chain reaction (PCR) was used to detect the presence of the MMTV
env-like sequences. Real-time PCR was used for HPV and EBV detection, and
EBV was further confirmed by chromogen in situ hybridization (CISH). Results: Mouse mammary tumor virus, HPV, and EBV were detected in SBC in 11%, 21%, and
23%, respectively. Only 3 of 52 (5.7%) positive cases demonstrated multiple
virus infections. However, 49 of 52 (94%) of the positive cases revealed the
presence of 1 type of viral sequences. Consequently, 52% of the studied
breast cancer cases were infected with at least 1 type of the aforementioned
viruses. Conclusions: The current cohort suggests that MMTV, HPV, and EBV have a potential role in
the development of breast cancer and adding more reasons to proceed with the
quest of a possible viral origin of breast cancer.
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Affiliation(s)
- Mohammad Al Hamad
- Department of Pathology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ismail Matalka
- Department of Pathology and Microbiology, Faculty of Medicine, Jordan University of Science and Technology (JUST), Irbid, Jordan
| | - Mazhar Salim Al Zoubi
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid, Jordan
| | - Ivana Armogida
- Department of Pathology, Pisa University Hospital, Pisa, Italy.,Presently at Illumina Cambridge Ltd, Cambridge, UK
| | - Rawan Khasawneh
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid, Jordan
| | - Maysa Al-Husaini
- Department of Pathology and Laboratory Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Maher Sughayer
- Department of Pathology and Laboratory Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Saied Jaradat
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid, Jordan
| | - Amjad D Al-Nasser
- Department of Statistics, Faculty of Science, Yarmouk University, Irbid, Jordan
| | - Chiara Maria Mazzanti
- Fondazione Pisana per la Scienza, Pisa, Italy.,Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
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14
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Lessi F, Grandi N, Mazzanti CM, Civita P, Scatena C, Aretini P, Bandiera P, Fornaciari A, Giuffra V, Fornaciari G, Naccarato AG, Tramontano E, Bevilacqua G. A human MMTV-like betaretrovirus linked to breast cancer has been present in humans at least since the copper age. Aging (Albany NY) 2020; 12:15978-15994. [PMID: 32735554 PMCID: PMC7485742 DOI: 10.18632/aging.103780] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 06/22/2020] [Indexed: 12/16/2022]
Abstract
The betaretrovirus Mouse Mammary Tumor Virus (MMTV) is the well characterized etiological agent of mammary tumors in mice. In contrast, the etiology of sporadic human breast cancer (BC) is unknown, but accumulating data indicate a possible viral origin also for these malignancies. The presence of MMTVenv-like sequences (MMTVels) in the human salivary glands and saliva supports the latter as possible route of inter-human dissemination. In the absence of the demonstration of a mouse-man transmission of MMTV, we considered the possibility that a cross-species transmission could have occurred in ancient times. Therefore, we investigated MMTVels in the ancient dental calculus, which originates from saliva and is an excellent material for paleovirology. The calculus was collected from 36 ancient human skulls, excluding any possible mouse contamination. MMTV-like sequences were identified in the calculus of 6 individuals dated from the Copper Age to the 17th century. The MMTV-like sequences were compared with known human endogenous betaretroviruses and with animal exogenous betaretroviruses, confirming their exogenous origin and relation to MMTV. These data reveal that a human exogenous betaretrovirus similar to MMTV has existed at least since 4,500 years ago and indirectly support the hypothesis that it could play a role in human breast cancer.
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Affiliation(s)
| | - Nicole Grandi
- Division of Molecular Virology, Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
| | | | - Prospero Civita
- Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - Cristian Scatena
- Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | | | - Pasquale Bandiera
- Center for Anthropological, Paleopathological and Historical Studies of The Sardinian and Mediterranean Populations, Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Antonio Fornaciari
- Division of Paleopathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - Valentina Giuffra
- Division of Paleopathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - Gino Fornaciari
- Division of Paleopathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - Antonio Giuseppe Naccarato
- Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - Enzo Tramontano
- Division of Molecular Virology, Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
| | - Generoso Bevilacqua
- Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy.,Department of Laboratory Medicine, "San Rossore" Hospital, Pisa, Italy
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15
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Fanelli GN, Naccarato AG, Scatena C. Recent Advances in Cancer Plasticity: Cellular Mechanisms, Surveillance Strategies, and Therapeutic Optimization. Front Oncol 2020; 10:569. [PMID: 32391266 PMCID: PMC7188928 DOI: 10.3389/fonc.2020.00569] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 03/30/2020] [Indexed: 12/12/2022] Open
Abstract
The processes of recurrence and metastasis, through which cancer relapses locally or spreads to distant sites in the body, accounts for more than 90% of cancer-related deaths. At present there are very few treatment options for patients at this stage of their disease. The main obstacle to successfully treat advanced cancer is the cells' ability to change in ways that make them resistant to treatment. Understanding the cellular mechanisms that mediate this cancer cell plasticity may lead to improved patient survival. Epigenetic reprogramming, together with tumor microenvironment, drives such dynamic mechanisms favoring tumor heterogeneity, and cancer cell plasticity. In addition, the development of new approaches that can report on cancer plasticity in their native environment have profound implications for studying cancer biology and monitoring tumor progression. We herein provide an overview of recent advancements in understanding the mechanisms regulating cell plasticity and current strategies for their monitoring and therapy management.
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Affiliation(s)
- Giuseppe Nicolò Fanelli
- Division of Pathology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Antonio Giuseppe Naccarato
- Division of Pathology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Cristian Scatena
- Division of Pathology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
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16
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Lawson JS, Glenn WK. Evidence for a causal role by mouse mammary tumour-like virus in human breast cancer. NPJ Breast Cancer 2019; 5:40. [PMID: 31728407 PMCID: PMC6838066 DOI: 10.1038/s41523-019-0136-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 10/15/2019] [Indexed: 12/17/2022] Open
Abstract
We have reviewed the evidence relevant to mouse mammary tumour viruses (MMTV) and human breast cancer. The prevalence of MMTV- like gene sequences is 15-fold higher in human breast cancer than in normal human breast tissue controls and is present in up to 40% of human breast cancers. MMTV-like gene sequences can be identified in benign breast tissues 1-11 years before the development of positive MMTV-like breast cancer in the same women. The prevalence of MMTV antibodies in sera from women with breast cancer is 5-fold higher than in normal women. MMTV can infect human breast epithelial cells and integrate at random into the human genome located in those cells. MMTV-like gene sequences are present in human milk from normal lactating women and with increased prevalence in milk from women at risk of breast cancer. MMTV-like virus associated human breast cancer has strikingly similar features to MMTV-associated mouse mammary tumours. These features include almost identical nucleotide sequences and structure of the MMTV genome, histology, superantigen expression, MMTV infection of B and T lymphocytes and hormone dependence. MMTV-like gene sequences have also been identified in dogs, cats, monkeys, mice and rats. Saliva has been identified as the most plausible means of transmission from human to human and possibly from dogs to humans. The evidence meets the classic causal criteria. A causal role for MMTV-like viruses in human breast cancer is highly likely.
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Affiliation(s)
- James S. Lawson
- School of Biotechnology and Biomolecular Science, University of New South Wales, Sydney, NSW Australia
| | - Wendy K. Glenn
- School of Biotechnology and Biomolecular Science, University of New South Wales, Sydney, NSW Australia
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17
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Naccarato AG, Lessi F, Zavaglia K, Scatena C, Al Hamad MA, Aretini P, Menicagli M, Roncella M, Ghilli M, Caligo MA, Mazzanti CM, Bevilacqua G. Mouse mammary tumor virus (MMTV) - like exogenous sequences are associated with sporadic but not hereditary human breast carcinoma. Aging (Albany NY) 2019; 11:7236-7241. [PMID: 31518337 PMCID: PMC6756874 DOI: 10.18632/aging.102252] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 09/02/2019] [Indexed: 04/12/2023]
Abstract
The inheritance of mutated suppressor genes, such as BRCA1 and BRCA2, is acknowledged as an etiological factor in hereditary breast carcinoma (HBC). Two different molecular mechanisms are possible; the Knudson's "two hits" or the gene haploinsufficiency. Etiology of sporadic breast carcinoma (SBC) is not known, although data support the possible role of the betaretrovirus Mouse Mammary Tumor Virus (MMTV). This study analyzes the presence of MMTV exogenous sequences in two representative groups of HBC and SBC, excluding any contamination by murine and retroviral material and endogenous betaretroviruses. The 30.3% of 56 SBC contained MMTV sequences, against the 4.2% of 47 HBC (p < 0.001). Cases positive for viral sequences showed the presence of p14, signal peptide of the MMTV envelope precursor. This result was expected based on the fact that HBCs, having a specific genetic etiology, do not need the action of a carcinogenetic viral agent. Moreover, the striking results obtained by comparing two groups of vastly different tumors represent an additional element of quality control: the distinction between HBC and SBC is so well-defined that results cannot be ascribed to mere coincidence. This paper strengthens the hypothesis for a viral etiology for human sporadic breast carcinoma.
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Affiliation(s)
- Antonio Giuseppe Naccarato
- Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, and Department of Laboratory Medicine, Pisa University Hospital, Pisa, Italy
- Department of Laboratory Medicine, Pisa University Hospital, Pisa, Italy
| | | | - Katia Zavaglia
- Division of Molecular Genetics, Department of Laboratory Medicine, Pisa University Hospital, Pisa, Italy
| | - Cristian Scatena
- Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, and Department of Laboratory Medicine, Pisa University Hospital, Pisa, Italy
- Department of Laboratory Medicine, Pisa University Hospital, Pisa, Italy
| | - Mohammad A. Al Hamad
- Department of Pathology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | | | | | - Manuela Roncella
- Division of Surgery, Breast Center, Pisa University Hospital, Pisa, Italy
| | - Matteo Ghilli
- Division of Surgery, Breast Center, Pisa University Hospital, Pisa, Italy
| | - Maria Adelaide Caligo
- Division of Molecular Genetics, Department of Laboratory Medicine, Pisa University Hospital, Pisa, Italy
| | | | - Generoso Bevilacqua
- Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, and Department of Laboratory Medicine, Pisa University Hospital, Pisa, Italy
- “San Rossore” Hospital – Casa di Cura “San Rossore”, Pisa, Italy
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18
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Amarante MK, de Sousa Pereira N, Vitiello GAF, Watanabe MAE. Involvement of a mouse mammary tumor virus (MMTV) homologue in human breast cancer: Evidence for, against and possible causes of controversies. Microb Pathog 2019; 130:283-294. [PMID: 30905715 DOI: 10.1016/j.micpath.2019.03.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 02/26/2019] [Accepted: 03/15/2019] [Indexed: 01/01/2023]
Abstract
Breast cancer (BC) is a complex and heterogeneous disease whose evolution depends on the tumor-host interaction. This type of cancer occurs when the mammary cells begin to grow wildly and become able to invade nearby tissues and/or promote metastases. Mouse mammary tumor virus (MMTV) is the accepted etiological agent of mammary tumors in mice. The identification of MMTV-like sequences and antigens in human mammary carcinoma has supported the theory that a virus homologous to MMTV (namely, HMTV) may be involved in human BC, but the role of retroviral elements in this disease remains elusive, as results from different research groups were contradictory. In the present review we present works for and against the involvement of HMTV in BC and discuss possible causes of divergences among studies. In the final section we fit current data regarding this issue to stablished causality criteria. We conclude that there is convincing data supporting the association of HMTV with BC, however there is still a need for epidemiological and basic research studies focusing on carcinogenic mechanisms for this virus in humans to fully understand its role in BC. This knowledge may open the way for the development of new preventive and therapeutic approaches in human BC.
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Affiliation(s)
- Marla Karine Amarante
- Laboratory of DNA Polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, Londrina, Paraná, Brazil.
| | - Nathalia de Sousa Pereira
- Laboratory of DNA Polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, Londrina, Paraná, Brazil
| | - Glauco Akelinghton Freire Vitiello
- Laboratory of DNA Polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, Londrina, Paraná, Brazil
| | - Maria Angelica Ehara Watanabe
- Laboratory of DNA Polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, Londrina, Paraná, Brazil
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19
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Civita P, Menicagli M, Scopelliti C, Lessi F, Millanta F, Borsacchi S, Parisi F, Freer G, Pistello M, Mazzanti CM, Poli A. Mouse mammary tumour virus-like env nucleotide and p14 signal peptide are present in feline mammary carcinomas, but not in neoplastic or dysplastic canine mammary lesions. PLoS One 2018; 13:e0200839. [PMID: 30040851 PMCID: PMC6057629 DOI: 10.1371/journal.pone.0200839] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 07/02/2018] [Indexed: 11/18/2022] Open
Abstract
Mouse mammary tumour virus-like (MMTV-like) is suspected to be involved in human breast cancer and it has been hypothesized that companion animals might have a role in viral transmission. The aim of our study was to investigate the presence of MMTV-like nucleotide sequences and viral protein in a larger number of feline (FMCs) and canine mammary carcinomas (CMCs) by nested PCR and immunohistochemistry. Results showed that the presence of MMTV-like env sequence in FMCs was 7% (6/86), while all the CMCs and canine dysplastic lesions scored negative. All PCR-positive FMCs scored positive for the MMTV p14 signal peptide of the envelope precursor protein of the virus. In contrast, all PCR-negative FMCs and canine mammary lesions were also negative for immunohistochemistry analysis. Canine and feline normal mammary gland tissues scored negative for both PCR and MMTV-p14 protein. Multiple nucleotide alignment of MMTV-like env gene sequences isolated from cat showed 97% and 99% similarity with HMTV and MMTV, respectively, while the others two presented some polimorphisms. Particularly the sequences of one of these two tumors showed a polymorphism (c.7575 A> G), that causes a previously unreported amino acid substitution (Thr > Ala). In conclusion, the results of our study showed the presence of MMTV-like sequences and viral protein in some FMCs. Further studies are needed to understand whether this virus does play a role in the development of FMCs, if MMTV-like is an exogenous virus as these data suggest and, in such a case, how and from whom this virus was acquired.
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Affiliation(s)
| | | | | | | | | | - Sara Borsacchi
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italia
| | - Francesca Parisi
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italia
| | - Giulia Freer
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italia
| | - Mauro Pistello
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italia
| | | | - Alessandro Poli
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italia
- * E-mail:
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20
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Lawson JS, Mazzanti C, Civita P, Menicagli M, Ngan CC, Whitaker NJ, Hochman J, Braitbard O, Yosufi B, Glenn WK. Association of Mouse Mammary Tumor Virus With Human Breast Cancer: Histology, Immunohistochemistry and Polymerase Chain Reaction Analyses. Front Oncol 2018; 8:141. [PMID: 29868468 PMCID: PMC5950654 DOI: 10.3389/fonc.2018.00141] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 04/18/2018] [Indexed: 12/18/2022] Open
Abstract
Purpose The purpose of this study is to determine whether mouse mammary tumor virus (MMTV)-associated human breast cancer has the same or similar histology to MMTV-associated mouse mammary tumors. Such associations may indicate a role for MMTV in human breast cancer. Methods Immunohistochemical techniques (using antibodies directed against the signal peptide p14 of the envelope precursor protein of MMTV) and polymerase chain reaction (PCR) analyses were used to identify MMTV proteins and MMTV-like envelope gene sequences in a series of breast cancers from Australian women. The histological characteristics of these human breast cancer specimens were compared with MMTV positive mouse mammary tumors. The same methods were used to study benign breast tissues which 1–11 years later developed into breast cancer. Results MMTV p14 proteins were identified in 27 (54%) of 50 human breast cancers. MMTV env gene sequences were identified by PCR in 12 (27%) of 45 human breast cancers. There was a significant correlation between the presence of MMTV (identified by p14 immunohistochemistry) in human breast cancers and histological characteristics similar to MMTV positive mouse mammary tumors (p = 0.001). There was a non-significant correlation between the presence of MMTV env gene sequences (identified by PCR) in human breast cancers and histological characteristics similar to MMTV positive mouse mammary tumors (p = 0.290). MMTV p14 proteins were identified in 7 (54%) of 13 benign breast specimens that later developed into human breast cancers. MMTV by PCR was identified in two benign specimens one of whom later developed MMTV positive breast cancer. Discussion These observations offer evidence that MMTV may be associated with characteristic human breast cancer histology. p14-based immunohistochemistry appears to be a more reliable technique than PCR for the identification of MMTV in human breast cancer. Identification of MMTV-associated p14 proteins in benign breast tissues confirms prior PCR-based studies that MMTV infection occurs before the development of MMTV positive breast cancer. Conclusion Many MMTV positive human breast cancers have similar histology to MMTV positive mouse mammary tumors. MMTV infection identified in benign breast tissues precedes development of MMTV positive human breast cancer. When considered in the context of prior studies, these observations indicate a likely role for MMTV in human breast cancer.
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Affiliation(s)
| | | | | | | | | | | | - Jacob Hochman
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Ori Braitbard
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Benafsha Yosufi
- Douglass Hanly Moir Pathology, Macquarie Park, NSW, Australia
| | - Wendy K Glenn
- University of New South Wales, Sydney, NSW, Australia
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21
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Braitbard O, Roniger M, Bar-Sinai A, Rajchman D, Gross T, Abramovitch H, La Ferla M, Franceschi S, Lessi F, Naccarato AG, Mazzanti CM, Bevilacqua G, Hochman J. A new immunization and treatment strategy for mouse mammary tumor virus (MMTV) associated cancers. Oncotarget 2018; 7:21168-80. [PMID: 26934560 PMCID: PMC5008276 DOI: 10.18632/oncotarget.7762] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 01/24/2016] [Indexed: 12/20/2022] Open
Abstract
Mouse Mammary Tumor Virus (MMTV) causes mammary carcinoma or lymphoma in mice. An increasing body of evidence in recent years supports its involvement also in human sporadic breast cancer. It is thus of importance to develop new strategies to impair the development, growth and metastasis of MMTV-associated cancers. The signal peptide of the envelope precursor protein of this virus: MMTV-p14 (p14) is an excellent target for such strategies, due to unique characteristics distinct from its regular endoplasmic reticulum targeting function. These include cell surface expression in: murine cancer cells that harbor the virus, human breast cancer (MCF-7) cells that ectopically express p14, as well as cultured human cells derived from an invasive ductal breast carcinoma positive for MMTV sequences. These findings support its use in signal peptide-based immune targeting. Indeed, priming and boosting mice with p14 elicits a specific anti-signal peptide immune response sufficient for protective vaccination against MMTV-associated tumors. Furthermore, passive immunization using a combination of anti-p14 monoclonal antibodies or the transfer of T-cells from immunized mice (Adoptive Cell Transfer) is also therapeutically effective. With reports demonstrating involvement of MMTV in human breast cancer, we propose the immune-mediated targeting of p14 as a strategy for prevention, treatment and diagnosis of MMTV-associated cancers.
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Affiliation(s)
- Ori Braitbard
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Maayan Roniger
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Allan Bar-Sinai
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Dana Rajchman
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Tamar Gross
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Hillel Abramovitch
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | | | | | | | | | | | - Generoso Bevilacqua
- FPS - Pisa Science Foundation, Pisa, Italy.,Department of Pathology, University of Pisa, Pisa, Italy
| | - Jacob Hochman
- Department of Cell and Developmental Biology, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
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22
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Lawson JS, Salmons B, Glenn WK. Oncogenic Viruses and Breast Cancer: Mouse Mammary Tumor Virus (MMTV), Bovine Leukemia Virus (BLV), Human Papilloma Virus (HPV), and Epstein-Barr Virus (EBV). Front Oncol 2018; 8:1. [PMID: 29404275 PMCID: PMC5786831 DOI: 10.3389/fonc.2018.00001] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 01/03/2018] [Indexed: 12/18/2022] Open
Abstract
Background Although the risk factors for breast cancer are well established, namely female gender, early menarche and late menopause plus the protective influence of early pregnancy, the underlying causes of breast cancer remain unknown. The development of substantial recent evidence indicates that a handful of viruses may have a role in breast cancer. These viruses are mouse mammary tumor virus (MMTV), bovine leukemia virus (BLV), human papilloma viruses (HPVs), and Epstein–Barr virus (EBV-also known as human herpes virus type 4). Each of these viruses has documented oncogenic potential. The aim of this review is to inform the scientific and general community about this recent evidence. The evidence MMTV and human breast cancer—the evidence is detailed and comprehensive but cannot be regarded as conclusive. BLV and human breast cancer—the evidence is limited. However, in view of the emerging information about BLV in human breast cancer, it is prudent to encourage the elimination of BLV in cattle, particularly in the dairy industry. HPVs and breast cancer—the evidence is substantial but not conclusive. The availability of effective preventive vaccines is a major advantage and their use should be encouraged. EBV and breast cancer—the evidence is also substantial but not conclusive. Currently, there are no practical means of either prevention or treatment. Although there is evidence of genetic predisposition, and cancer in general is a culmination of events, there is no evidence that inherited genetic traits are causal. Conclusion The influence of oncogenic viruses is currently the major plausible hypothesis for a direct cause of human breast cancer.
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Affiliation(s)
- James S Lawson
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | | | - Wendy K Glenn
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
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23
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Lawson JS, Glenn WK. Multiple oncogenic viruses are present in human breast tissues before development of virus associated breast cancer. Infect Agent Cancer 2017; 12:55. [PMID: 29075317 PMCID: PMC5644159 DOI: 10.1186/s13027-017-0165-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 10/09/2017] [Indexed: 02/07/2023] Open
Abstract
Background Multiple oncogenic viruses including, mouse mammary tumor virus, bovine leukemia virus, human papilloma virus, and Epstein Barr virus, have been identified as separate infectious pathogens in human breast cancer. Here we demonstrate that these four viruses may be present in normal and benign breast tissues 1 to 11 years before the development of same virus breast cancer in the same patients. Methods We combined the data we developed during investigations of the individual four oncogenic viruses and breast cancer. Patients who had benign breast biopsies 1–11 years prior to developing breast cancer were identified by pathology reports from a large Australian pathology service (Douglas Hanly Moir Pathology). Archival formalin fixed specimens from these patients were collected. The same archival specimens were used for (i) investigations of mouse mammary tumour virus (also known as human mammary tumour virus) conducted at the Icahn School of Medicine at Mount Sinai, New York and at the University of Pisa, Italy, (ii) bovine leukemia virus conducted at the University of California at Berkeley,(iii) human papilloma virus and Epstein Barr virus conducted at the University of New South Wales, Sydney, Australia. Seventeen normal breast tissues from cosmetic breast surgery conducted on Australian patients were used as controls. These patients were younger than those with benign and later breast cancer. Results Standard and in situ polymerase chain reaction (PCR) methods were used to identify the four viruses. The detailed methods are outlined in the separate publications.: mouse mammary tumor virus, human papilloma virus and Epstein Barr virus (Infect Agent Cancer 12:1, 2017, PLoS One 12:e0179367, 2017, Front Oncol 5:277, 2015, PLoS One 7:e48788, 2012). Epstein Barr virus and human papilloma virus were identified in the same breast cancer cells by in situ PCR. Mouse mammary tumour virus was identified in 6 (24%) of 25 benign breast specimens and in 9 (36%) of 25 breast cancer specimens which subsequently developed in the same patients. Bovine leukemia virus was identified in 18 (78%) of 23 benign breast specimens and in 20 (91%) of 22 subsequent breast cancers in the same patients. High risk human papilloma viruses were identified in 13 (72%) of 17 benign breast specimens and in 13 (76%) of 17 subsequent breast cancers in the same patients. Epstein Barr virus was not identified in any benign breast specimens but was identified in 3 (25%) of 12 subsequent breast cancers in the same patients. Mouse mammary tumour virus 3 (18%), bovine leukemia virus 6 (35%), high risk human papilloma virus 3 (18%) and Epstein Barr virus 5 (29%) were identified in 17 normal control breast specimens. Conclusions These findings add to the evidence that multiple oncogenic viruses have potential roles in human breast cancer. This is an important observation because evidence of prior infection before the development of disease is a key criterion when assessing causation.
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Affiliation(s)
- James S Lawson
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, 2052 Australia.,School of BABS, University of NSW, Sydney, NSW 2110 Australia
| | - Wendy K Glenn
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, 2052 Australia
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24
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Js L, Cc N, Wk G, Dd T. Mouse mammary tumour virus (MMTV) and human breast cancer with neuroendocrine differentiation. Infect Agent Cancer 2017; 12:24. [PMID: 28523075 PMCID: PMC5434566 DOI: 10.1186/s13027-017-0135-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 05/02/2017] [Indexed: 12/20/2022] Open
Abstract
Background Mouse mammary tumour viruses (MMTVs) may have a role in a subset of human breast cancers. MMTV positive human breast cancers have similar histological characteristics to neuroendocrine breast cancers and to MMTV positive mouse mammary tumours. The purpose of this study was to investigate the expression of neuroendocrine biomarkers – synaptophysin and chromogranin, to determine if these histological characteristics and biomarker expression were due to the influences of MMTV. Methods Immunohistochemistry analyses to identify synaptophysin and chromogranin were conducted on a series of human breast cancers in which (i) MMTV had been previously identified and had similar histological characteristics to MMTV positive mouse mammary tumours and (ii) MMTV positive mouse mammary tumours. Results The expression of synaptophysin and chromogranin in MMTV positive mouse mammary tumors were all positive (7 of 7 specimens – 100% positive). The expression of synaptophysin and chromogranin in MMTV positive human breast cancers was much less prevalent (3 of 22 – 14%). There was no expression of synaptophysin and chromogranin in the normal breast tissue control specimens. Discussion It is not possible to draw any firm conclusions from these observations. However, despite the small numbers of MMTV positive mouse mammary tumours in this study, the universal expression in these specimens of synaptophysin and chromogranin proteins is striking. This pattern of synaptophysin and chromogranin expression is very different from their expression in MMTV positive human breast cancers. The reason for these differences is not known. Conclusions The high prevalence of positive expression of synaptophysin and chromogranin in MMTV positive mouse mammary tumours and low expression of synaptophysin and chromogranin in MMTV positive human breast cancers indicates that MMTV is not usually associated with neuroendocrine human breast cancers. Electronic supplementary material The online version of this article (doi:10.1186/s13027-017-0135-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lawson Js
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - Ngan Cc
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - Glenn Wk
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - Tran Dd
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia.,Douglass Hanly Moir Pathology, Sydney, Australia
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San TH, Fujisawa M, Fushimi S, Yoshimura T, Ohara T, Soe L, Min NW, Kyaw O, Yang X, Matsukawa A. Low prevalence of human mammary tumor virus (HMTV) in breast cancer patients from Myanmar. Infect Agent Cancer 2017; 12:20. [PMID: 28413435 PMCID: PMC5389013 DOI: 10.1186/s13027-017-0130-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 04/05/2017] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Human mammary tumor virus (HMTV) is 90-95% homologous to mouse mammary tumor virus (MMTV), one of the causal agents of murine mammary tumors. HMTV (MMTV-like) sequences were reported to be present in human breast cancers from several populations with a prevalence range of 0-78%; however, the prevalence of HMTV in breast cancers from Myanmar remains unknown. METHODS Fifty-eight breast cancer samples from Myanmar women were examined in this study. DNA was isolated from formalin-fixed paraffin-embedded specimens, and HMTV envelope sequences were detected by semi-nested PCR. The sequence of the PCR products was also confirmed. RESULTS Only 1.7% (1 of 58) of the breast cancers were positive for HMTV, and the sequence of PCR products was 98.9% identical to the reference HMTV sequence (GenBank accession No. AF243039). The tumor with HMTV was grade III invasive ductal carcinoma, 7.0 cm in size with lymph node metastasis (T3, N1, M0). CONCLUSIONS We, for the first time, investigated the presence of HMTV in Myanmar breast cancer patients. In accordance with other Asian studies, the prevalence of HMTV in Myanmar was quite low, supporting the hypothesis that Asian breast cancers have different etiologies than in Western countries, where HMTV is more prevalent.
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Affiliation(s)
- Thar Htet San
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata, Okayama, 700-8558 Japan
| | - Masayoshi Fujisawa
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata, Okayama, 700-8558 Japan
| | - Soichiro Fushimi
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata, Okayama, 700-8558 Japan
- Department of Pathology, Himeji Red Cross Hospital, Himeji, Japan
| | - Teizo Yoshimura
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata, Okayama, 700-8558 Japan
| | - Toshiaki Ohara
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata, Okayama, 700-8558 Japan
| | - Lamin Soe
- Department of Pathology, Myeik General Hospital, Myeik, Myanmar
| | - Ngu Wah Min
- Department of Pathology, Sakura Specialist Hospital, Yangon, Myanmar
| | - Ohnmar Kyaw
- Immunology Research Division, Department of Medical Research, Yangon, Myanmar
| | - Xu Yang
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata, Okayama, 700-8558 Japan
| | - Akihiro Matsukawa
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata, Okayama, 700-8558 Japan
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26
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Nartey T, Mazzanti CM, Melana S, Glenn WK, Bevilacqua G, Holland JF, Whitaker NJ, Lawson JS, Pogo BGT. Mouse mammary tumor-like virus (MMTV) is present in human breast tissue before development of virally associated breast cancer. Infect Agent Cancer 2017; 12:1. [PMID: 28053656 PMCID: PMC5209856 DOI: 10.1186/s13027-016-0113-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 12/16/2016] [Indexed: 12/18/2022] Open
Abstract
Background There is substantial evidence that a virus homologous to mouse mammary tumor virus (MMTV) may have a role in human breast cancer. The present study indicates that those who developed breast cancer associated with an MMTV-like virus had this virus in their non-cancerous breast tissues years before the cancer developed. Methods Polymerase chain reaction (PCR) techniques and sequencing were used to identify MMTV-like envelope gene sequences (MMTV-like env sequences) in Australian benign breast biopsy specimens from women who several years later developed breast cancer. Murine contamination was excluded by stringent laboratory procedures, and the absence of intracisternal A particle sequences and mitochondrial cyclooxygenase sequences. Results MMTV-like env sequences (also called HMTV sequences to denote their source) were found in 9 of 25 breast cancer specimens (36%). Among 25 non-cancerous breast biopsies of these same patients taken 1 to 11 years earlier, six contained MMTV-like sequences (24%). Five of the six were among the nine virally-associated breast cancers. In two pairs of specimens, benign and malignant, env sequences were 97% identical. Conclusions The identification of MMTV (MMTV-like) sequences in breast tissues prior to the development of MMTV positive breast cancer fulfills a key criterion for a possible causal role for the MMTV-like virus in human breast cancer.
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Affiliation(s)
- Teiko Nartey
- Icahn School of Medicine at Mount Sinai, New York, NY USA
| | | | - Stella Melana
- Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Wendy K Glenn
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | | | | | - Noel J Whitaker
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - James S Lawson
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
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27
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Reza MA, Reza MH, Mahdiyeh L, Mehdi F, Hamid ZN. Evaluation Frequency of Merkel Cell Polyoma, Epstein-Barr and Mouse Mammary Tumor Viruses in Patients with Breast Cancer in Kerman, Southeast of Iran. Asian Pac J Cancer Prev 2016; 16:7351-7. [PMID: 26514536 DOI: 10.7314/apjcp.2015.16.16.7351] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Breast cancer is the most common cancer among women worldwide. Roles of the Epstein-Barr, Merkel cell polyoma and mouse mammary tumor viruses in breast carcinogenesis are still controversial although any relationship would clearly be important for breast cancer etiology, early detection and prevention. In the present study associations between EBV, MMTV and Merkel cell polyoma virus and breast cancer in 100 Iranian patients were evaluated using paraffin-embedded tissues. EBER RNA and expression of p53 and large T antigen were evaluated by real time PCR and CD34, p63, HER2, PR and ER markers were studied by immunohistochemistry. EBV was detected in 8/100 (8%), MMTV in 12/100 (12%), MPy in 3/100 (3%) and EBER RNA in 18/100 (18%) cases. None of the control samples demonstrated any of the viruses. p53 was suppressed in EBV, MPy and MMTV positive samples. The large T antigen rate was raised in MPy positive samples. Our results showed that EBV, MMTV and the Merkel cell polyoma virus are foundwith some proportion of breast cancers in our patients, suggesting that these viruses might have a significant role in breast cancer in Kerman, southeast of Iran.
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Affiliation(s)
- Malekpour Afshar Reza
- Kerman University of Medical sciences, Afzalipour School of Medicine, Research Center of Infectious and Tropical Diseases, Kerman, Iran E-mail :
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28
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Lamb R, Bonuccelli G, Ozsvári B, Peiris-Pagès M, Fiorillo M, Smith DL, Bevilacqua G, Mazzanti CM, McDonnell LA, Naccarato AG, Chiu M, Wynne L, Martinez-Outschoorn UE, Sotgia F, Lisanti MP. Mitochondrial mass, a new metabolic biomarker for stem-like cancer cells: Understanding WNT/FGF-driven anabolic signaling. Oncotarget 2016; 6:30453-71. [PMID: 26421711 PMCID: PMC4741544 DOI: 10.18632/oncotarget.5852] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 08/22/2015] [Indexed: 12/19/2022] Open
Abstract
Here, we developed an isogenic cell model of "stemness" to facilitate protein biomarker discovery in breast cancer. For this purpose, we used knowledge gained previously from the study of the mouse mammary tumor virus (MMTV). MMTV initiates mammary tumorigenesis in mice by promoter insertion adjacent to two main integration sites, namely Int-1 (Wnt1) and Int-2 (Fgf3), which ultimately activates Wnt/β-catenin signaling, driving the propagation of mammary cancer stem cells (CSCs). Thus, to develop a humanized model of MMTV signaling, we over-expressed WNT1 and FGF3 in MCF7 cells, an ER(+) human breast cancer cell line. We then validated that MCF7 cells over-expressing both WNT1 and FGF3 show a 3.5-fold increase in mammosphere formation, and that conditioned media from these cells is also sufficient to promote stem cell activity in untransfected parental MCF7 and T47D cells, as WNT1 and FGF3 are secreted factors. Proteomic analysis of this model system revealed the induction of i) EMT markers, ii) mitochondrial proteins, iii) glycolytic enzymes and iv) protein synthesis machinery, consistent with an anabolic CSC phenotype. MitoTracker staining validated the expected WNT1/FGF3-induced increase in mitochondrial mass and activity, which presumably reflects increased mitochondrial biogenesis. Importantly, many of the proteins that were up-regulated by WNT/FGF-signaling in MCF7 cells, were also transcriptionally over-expressed in human breast cancer cells in vivo, based on the bioinformatic analysis of public gene expression datasets of laser-captured patient samples. As such, this isogenic cell model should accelerate the discovery of new biomarkers to predict clinical outcome in breast cancer, facilitating the development of personalized medicine.Finally, we used mitochondrial mass as a surrogate marker for increased mitochondrial biogenesis in untransfected MCF7 cells. As predicted, metabolic fractionation of parental MCF7 cells, via MitoTracker staining, indicated that high mitochondrial mass is a new metabolic biomarker for the enrichment of anabolic CSCs, as functionally assessed by mammosphere-forming activity. This observation has broad implications for understanding the role of mitochondrial biogenesis in the propagation of stem-like cancer cells. Technically, this general metabolic approach could be applied to any cancer type, to identify and target the mitochondrial-rich CSC population.The implications of our work for understanding the role of mitochondrial metabolism in viral oncogenesis driven by random promoter insertions are also discussed, in the context of MMTV and ALV infections.
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Affiliation(s)
- Rebecca Lamb
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - Gloria Bonuccelli
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - Béla Ozsvári
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - Maria Peiris-Pagès
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - Marco Fiorillo
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Department of Pharmacy, Health and Nutritional Sciences, The University of Calabria, Cosenza, Italy
| | - Duncan L Smith
- The Cancer Research UK Manchester Institute, University of Manchester, Manchester, UK
| | - Generoso Bevilacqua
- FPS - The Pisa Science Foundation, Pisa, Italy.,Department of Pathology, Pisa University Hospital, Pisa, Italy
| | | | | | | | - Maybo Chiu
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - Luke Wynne
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | | | - Federica Sotgia
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - Michael P Lisanti
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
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Abstract
Etiology of human breast cancer is unknown, whereas the Mouse Mammary Tumor Virus (MMTV) is recognized as the etiologic agent of mouse mammary carcinoma. Moreover, this experimental model contributed substantially to our understanding of many biological aspects of the human disease. Several data strongly suggest a causative role of MMTV in humans, such as the presence of viral sequences in a high percentage of infiltrating breast carcinoma and in its preinvasive lesions, the production of viral particles in primary cultures of breast cancer, the ability of the virus to infect cells in culture. This paper demonstrates that MMTV is present in human saliva and salivary glands. MMTV presence was investigated by fluorescent PCR, RT-PCR, FISH, immunohistochemistry, and whole transcriptome analysis. Saliva was obtained from newborns, children, adults, and breast cancer patients. The saliva of newborns is MMTV-free, whereas MMTV is present in saliva of children (26.66%), healthy adults (10.60%), and breast cancer patients (57.14% as DNA and 33.9% as RNA). MMTV is also present in 8.10% of salivary glands. RNA-seq analysis performed on saliva of a breast cancer patient demonstrates a high expression of MMTV RNA in comparison to negative controls. The possibility of a contamination by murine DNA was excluded by murine mtDNA and IAP LTR PCR. These findings confirm the presence of MMTV in humans, strongly suggest saliva as route in inter-human infection, and support the hypothesis of a viral origin for human breast carcinoma.
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Slaoui M, El Mzibri M, Razine R, Qmichou Z, Attaleb M, Amrani M. Detection of MMTV-Like sequences in Moroccan breast cancer cases. Infect Agent Cancer 2014; 9:37. [PMID: 25926863 PMCID: PMC4414294 DOI: 10.1186/1750-9378-9-37] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 10/10/2014] [Indexed: 12/16/2022] Open
Abstract
Introduction The mouse mammary tumor virus (MMTV) like sequences have been reported to be present in some human breast cancers, but their association with breast cancer development is still controversial. Methods In this retrospective study, we investigated the status of MMTV-like in 42 tumor biopsies and 18 paired normal tissues from Moroccan patients with breast cancer. MMTV-like env sequences were identified by PCR and confirmed by direct DNA sequencing. Results Specific MMTV-like env sequences were found in 24 (57.14%) cases of breast carcinomas, and 6 (33.3%) cases of matched normal breast tissues. Comparison to sociologic and clinicopathological parameters showed no significant association between the presence of MMTV-like sequences and age, menopausal status, histological subtype, histological grade, tumor size and the expression of hormone receptors (estrogen ER and/or progesterone PgR) and Her 2. However, a significant correlation was found between MMTV-like presence and parity (p = 0.024). Conclusions This present study confirms the presence of MMTV-like env sequences in breast cancer in Moroccan women, prompting further evaluation, on large sampling, to elucidate the probable causal roles of MMTV-like in breast cancer development.
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Affiliation(s)
- Meriem Slaoui
- Equipe de recherche ONCOGYMA, University of Mohamed V-Souissi, Faculty of Medicine and Pharmacy of Rabat, Avenue Mohammed Belarbi El Alaoui - Souissi, BP 6203 Rabat, Morocco ; Unité de Biologie et Recherche Médicale, Centre National de l'Energie, des Sciences et des Techniques Nucléaires, Rabat, Morocco
| | - Mohammed El Mzibri
- Unité de Biologie et Recherche Médicale, Centre National de l'Energie, des Sciences et des Techniques Nucléaires, Rabat, Morocco
| | - Rachid Razine
- Laboratory of Biostatistics, Epidemiology and Clinical Research, Université Mohamed V-Souissi Faculty of Medicine and Pharmacy of Rabat, Avenue Mohammed Belarbi El Alaoui - Souissi, BP 6203 Rabat, Morocco ; Department of Public Health, Université Mohamed V-Souissi Faculty of Medicine and Pharmacy of Rabat, Avenue Mohammed Belarbi El Alaoui - Souissi, BP 6203 Rabat, Morocco
| | - Zineb Qmichou
- Unité de Biologie et Recherche Médicale, Centre National de l'Energie, des Sciences et des Techniques Nucléaires, Rabat, Morocco
| | - Mohammed Attaleb
- Unité de Biologie et Recherche Médicale, Centre National de l'Energie, des Sciences et des Techniques Nucléaires, Rabat, Morocco
| | - Mariam Amrani
- Equipe de recherche ONCOGYMA, University of Mohamed V-Souissi, Faculty of Medicine and Pharmacy of Rabat, Avenue Mohammed Belarbi El Alaoui - Souissi, BP 6203 Rabat, Morocco
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Abstract
Viruses are known to be etiologically related to several types of human cancer. In several published studies, viruses such as human mammary tumor virus, human papillomaviruses, Epstein-Barr virus, human cytomegalovirus, herpes simplex virus, and measles virus have been implicated in the pathogenesis of a subset of breast cancers (BC). However, these studies have produced conflicting results, causing considerable controversy. In this context, recent demonstration of elevated levels of mutagenic antiviral enzyme APOBEC3B in a majority of BCs is a highly significant development, as it provides a possible mechanism for development of large numbers of mutations (kataegis) that characterize many of the BCs. It has also provided further impetus for revaluating the role of viruses in the pathogenesis of BC.
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Wang F, Hou J, Shen Q, Yue Y, Xie F, Wang X, Jin H. Mouse mammary tumor virus-like virus infection and the risk of human breast cancer: a meta-analysis. Am J Transl Res 2014; 6:248-266. [PMID: 24936218 PMCID: PMC4058307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 03/12/2014] [Indexed: 06/03/2023]
Abstract
Despite a large number of molecular epidemiological studies, the association of Mouse Mammary Tumor Virus-Like Virus (MMTV-LV) infection with the risk of human breast cancer remains inconclusive mainly due to the heterogeneity in populations involved. We performed a systematic search of multiple bibliographic databases, up to October 2013, to identify all studies on detection of MMTV-LV DNA in human breast cancer using polymerase chain reaction (PCR) and conducted the first comprehensive meta-analysis of published literature to explore the relevance of MMTV-LV to human breast cancer. As a result, meta-analysis of twelve case-control studies identified from the systematic search revealed a significantly increased risk for breast cancer development after MMTV-LV infection (OR=15.20; 95% CI: 9.98-23.13). However, there was no significant correlation between MMTV-LV infection and the transformation from ductal carcinoma in situ to invasive ductal carcinoma (OR=1.16; 95% CI: 0.27-4.97). In addition, MMTV-LV infection was not associated with the expression of estrogen receptor (ER) (OR=0.89; 95% CI: 0.48-1.65), progesterone receptor (PR) (OR=0.73; 95% CI: 0.22-2.42), HER-2 (OR=0.65; 95% CI: 0.30-1.43) or p53 (OR=1.47; 95% CI: 0.79-2.73). Finally, we found that the prevalence of MMTV-LV in breast carcinoma was significantly higher in patients from Western countries (prevalence=40.4%, 95% CI: 28.9%-51.9%) than in Asian patients (prevalence: 8.5%; 95% CI: -7.1%-24.1%) in a subgroup and meta-regression analysis (p=0.015). In summary, the meta-analysis of published studies revealed a significantly increased risk for breast cancer development after MMTV-LV infection. In addition, the prevalence of MMTV-LV is much higher in breast cancer patients from Western countries than Asian patients.
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Affiliation(s)
- Faliang Wang
- Laboratory of Cancer Biology, Institute of Clinical Science, Sir Runrun Shaw Hospital, School of Medicine, Zhejiang UniversityHangzhou, China
- Department of Clinical Oncology, The Children’s Hospital, School of Medicine, Zhejiang UniversityHangzhou, China
| | - Jinchao Hou
- Department of Anesthesiology, The First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou, China
| | - Qi Shen
- Department of Medical Oncology, Sir Runrun Shaw Hospital, School of Medicine, Zhejiang UniversityHangzhou, China
| | - Yongfang Yue
- Laboratory of Cancer Biology, Institute of Clinical Science, Sir Runrun Shaw Hospital, School of Medicine, Zhejiang UniversityHangzhou, China
| | - Fajun Xie
- Department of Medical Oncology, Zhejiang Cancer HospitalHangzhou, Zhejiang Province, China
| | - Xian Wang
- Department of Medical Oncology, Sir Runrun Shaw Hospital, School of Medicine, Zhejiang UniversityHangzhou, China
| | - Hongchuan Jin
- Laboratory of Cancer Biology, Institute of Clinical Science, Sir Runrun Shaw Hospital, School of Medicine, Zhejiang UniversityHangzhou, China
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De Paoli P, Carbone A. Carcinogenic viruses and solid cancers without sufficient evidence of causal association. Int J Cancer 2013; 133:1517-29. [PMID: 23280523 DOI: 10.1002/ijc.27995] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 12/07/2012] [Indexed: 01/01/2023]
Abstract
Viral infections are important risk factors for tumor development in humans. Selected types of cancers, either lymphomas or carcinomas, for which there is sufficient evidence in humans of a causal association with specific viruses, have been identified. Experimental and clinical data on the possible association of other tumor types and carcinogenic viruses are presently controversial. In this article, we review the current evidence on the relationship between breast, colorectal and lung cancers and carcinogenic viruses. The majority of the publications reviewed do not provide definitive evidence that the viruses studied are associated with breast, colon and lung cancers. However, since this association may be clinically relevant for some tumor subtypes (i.e., lung cancer and papillomaviruses), there is an urgent need for further investigation on this topic. Using innovative laboratory techniques for viral detection on well-defined tumor types, National and International networks against cancer should encourage and organize concerted research programs on viruses and solid cancer association.
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Affiliation(s)
- Paolo De Paoli
- Scientific Directorate, Centro di Riferimento Oncologico, IRCCS, Istituto Nazionale Tumori, Via Franco Gallini 2, Aviano, Italy.
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Tabriz HM, Zendehdel K, Shahsiah R, Fereidooni F, Mehdipour B, Hosseini ZM. Lack of Detection of the Mouse Mammary Tumor-like Virus (MMTV) Env Gene in Iranian Women Breast Cancer using Real Time PCR. Asian Pac J Cancer Prev 2013; 14:2945-8. [DOI: 10.7314/apjcp.2013.14.5.2945] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Salmons B, Gunzburg WH. Revisiting a role for a mammary tumor retrovirus in human breast cancer. Int J Cancer 2013; 133:1530-5. [DOI: 10.1002/ijc.28210] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Accepted: 04/09/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Brian Salmons
- SG Austria; 20 Biopolis Way #05-518 Centros; Singapore; Singapore
| | - Walter H. Gunzburg
- Institute of Virology; Department of Pathobiology; University of Veterinary Medicine; Vienna; Austria
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Glenn WK, Heng B, Delprado W, Iacopetta B, Whitaker NJ, Lawson JS. Epstein-Barr virus, human papillomavirus and mouse mammary tumour virus as multiple viruses in breast cancer. PLoS One 2012; 7:e48788. [PMID: 23183846 PMCID: PMC3501510 DOI: 10.1371/journal.pone.0048788] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The purpose of this investigation is to determine if Epstein Barr virus (EBV), high risk human papillomavirus (HPV), and mouse mammary tumour viruses (MMTV) co-exist in some breast cancers. MATERIALS AND METHODS All the specimens were from women residing in Australia. For investigations based on standard PCR, we used fresh frozen DNA extracts from 50 unselected invasive breast cancers. For normal breast specimens, we used DNA extracts from epithelial cells from milk donated by 40 lactating women. For investigations based on in situ PCR we used 27 unselected archival formalin fixed breast cancer specimens and 18 unselected archival formalin fixed normal breast specimens from women who had breast reduction surgery. Thirteen of these fixed breast cancer specimens were ductal carcinoma in situ (dcis) and 14 were predominantly invasive ductal carcinomas (idc). RESULTS EBV sequences were identified in 68%, high risk HPV sequences in 50%, and MMTV sequences in 78% of DNA extracted from 50 invasive breast cancer specimens. These same viruses were identified in selected normal and breast cancer specimens by in situ PCR. Sequences from more than one viral type were identified in 72% of the same breast cancer specimens. Normal controls showed these viruses were also present in epithelial cells in human milk - EBV (35%), HPV, 20%) and MMTV (32%) of 40 milk samples from normal lactating women, with multiple viruses being identified in 13% of the same milk samples. CONCLUSIONS We conclude that (i) EBV, HPV and MMTV gene sequences are present and co-exist in many human breast cancers, (ii) the presence of these viruses in breast cancer is associated with young age of diagnosis and possibly an increased grade of breast cancer.
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MESH Headings
- Aged
- Animals
- Base Sequence
- Breast Neoplasms/pathology
- Breast Neoplasms/virology
- Carcinoma, Intraductal, Noninfiltrating/pathology
- Carcinoma, Intraductal, Noninfiltrating/virology
- Case-Control Studies
- Cell Nucleus/virology
- DNA, Neoplasm/genetics
- Epstein-Barr Virus Nuclear Antigens/metabolism
- Female
- Genome, Viral/genetics
- Herpesvirus 4, Human/genetics
- Humans
- Lipopolysaccharide Receptors/metabolism
- Mammary Tumor Virus, Mouse/genetics
- Mice
- Middle Aged
- Molecular Sequence Data
- Neoplasm Grading
- Neoplasm Invasiveness
- Papillomaviridae/genetics
- Receptor, ErbB-2/metabolism
- Receptors, Estrogen/metabolism
- Receptors, Progesterone/metabolism
- Tumor Suppressor Protein p53/metabolism
- Viral Matrix Proteins/metabolism
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Affiliation(s)
- Wendy K. Glenn
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - Benjamin Heng
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | | | - Barry Iacopetta
- University Department of Surgery, University of Western Australia, Perth, Australia
| | - Noel J. Whitaker
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - James S. Lawson
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
- * E-mail:
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Mason AL, Gilady SY, Mackey JR. Mouse mammary tumor virus in human breast cancer red herring or smoking gun? THE AMERICAN JOURNAL OF PATHOLOGY 2011; 179:1588-90. [PMID: 21884676 DOI: 10.1016/j.ajpath.2011.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2011] [Revised: 08/05/2011] [Accepted: 08/12/2011] [Indexed: 12/29/2022]
Affiliation(s)
- Andrew L Mason
- Division of Gastroenterology, Department of Medicine, Cross Cancer Institute, University of Alberta, Edmonton, Alberta, Canada.
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