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Wijaya WA, Liu Y, Qing Y, Li Z. Prevalence of Merkel Cell Polyomavirus in Normal and Lesional Skin: A Systematic Review and Meta-Analysis. Front Oncol 2022; 12:868781. [PMID: 35392226 PMCID: PMC8980839 DOI: 10.3389/fonc.2022.868781] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 02/28/2022] [Indexed: 02/05/2023] Open
Abstract
The prevalence of Merkel cell polyomavirus(MCPyV) in Merkel cell carcinoma(MCC) and non-MCC skin lesions and its possible role in the etiology of other skin diseases remain controversial. To systematically assess the association between MCPyV infection and MCC, non-MCC skin lesions, and normal skin. For this systematic review and meta-analysis, a comprehensive search for eligible studies was conducted using Medline Ovid, Pubmed, Web of Science, and the Cochrane CENTRAL databases until August 2021; references were searched to identify additional studies. Observational studies that investigated the association between MCPyV infection and MCC, non-MCC skin lesions, and normal skin using polymerase chain reaction(PCR) as a detection method and provided sufficient data to calculate the prevalence of MCPyV positivity. A total of 50 articles were included in the study after exclusion criteria were applied. Two reviewers independently reviewed and assessed the eligibility of the studies, and all disagreements were resolved by consensus. To determine the association between MCPyV and MCC, overall odds ratio (OR) were calculated with 95% CI using a random-effects model. Single-arm meta-analyses were performed to examine the prevalence rate of MCPyV+ in MCC, non-MCC skin lesions, and normal skin. The primary analysis was the prevalence rate of MCPyV+ in MCC. Secondary outcomes included the prevalence rate of MCPyV+ in non-MCC skin lesions and normal skin. A total of 50 studies involving 5428 patients were reviewed based on our inclusion and exclusion criteria. Compared with the control group, MCPyV infection was significantly associated with MCC (OR = 3.51, 95% CI = 2.96 - 4.05). The global prevalence of MCPyV+ in MCC, melanoma, squamous cell carcinoma, basal cell carcinoma, Bowen's disease, actinic keratosis, keratoacanthoma, seborrheic keratosis, and normal skin was 80%, 4%, 15%, 15%, 21%, 6%, 20%, 10%, and 11%, respectively. The current results suggest that MCPyV infection is significantly associated with an increased risk of MCC. However, the low prevalence rate of MCPyV+ in non-MCC skin lesions does not exclude a pathogenic association of this virus with the development of non-MCC skin lesions.
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Affiliation(s)
- Wilson A Wijaya
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Liu
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Yong Qing
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Zhengyong Li
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
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Mokánszki A, Méhes G, Csoma SL, Kollár S, Chang Chien YC. Molecular Profiling of Merkel Cell Polyomavirus-Associated Merkel Cell Carcinoma and Cutaneous Melanoma. Diagnostics (Basel) 2021; 11:diagnostics11020212. [PMID: 33535453 PMCID: PMC7912722 DOI: 10.3390/diagnostics11020212] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/25/2021] [Accepted: 01/28/2021] [Indexed: 02/07/2023] Open
Abstract
Merkel cell carcinoma (MCC) is a rare, high-grade, aggressive cutaneous neuroendocrine malignancy most commonly associated with sun-exposed areas of older individuals. A relatively newly identified human virus, the Merkel cell polyomavirus (MCPyV) has been implicated in the pathogenesis of MCC. Our study aimed to examine nine MCC cases and randomly selected 60 melanoma cases to identify MCPyV status and to elucidate genetic differences between virus-positive and -negative cases. Altogether, seven MCPyV-positive MCC samples and four melanoma samples were analyzed. In MCPyV-positive MCC RB1, TP53, FBXW7, CTNNB1, and HNF1A pathogenic variants were identified, while in virus-negative cases only benign variants were found. In MCPyV-positive melanoma cases, besides BRAF mutations the following genes were also affected: PIK3CA, STK11, CDKN2A, SMAD4, and APC. In contrast to studies found in the literature, a higher tumor burden was detected in virus-associated MCC compared to MCPyV-negative cases. No association was identified between virus infection and tumor burden in melanoma samples. We concluded that analyzing the key morphologic and immunohistological features of MCC is critical to avoid confusion with other cutaneous malignancies. Molecular genetic investigations such as next-generation sequencing (NGS) enable molecular stratification, which may have future clinical impact.
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Affiliation(s)
- Attila Mokánszki
- Department of Pathology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (G.M.); (S.L.C.); (Y.-C.C.C.)
- Correspondence: ; Tel.: +36-52-411-600
| | - Gábor Méhes
- Department of Pathology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (G.M.); (S.L.C.); (Y.-C.C.C.)
| | - Szilvia Lilla Csoma
- Department of Pathology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (G.M.); (S.L.C.); (Y.-C.C.C.)
| | - Sándor Kollár
- Department of Pathology, Kenézy Gyula Teaching Hospital, University of Debrecen, H-4032 Debrecen, Hungary;
| | - Yi-Che Chang Chien
- Department of Pathology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (G.M.); (S.L.C.); (Y.-C.C.C.)
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Abstract
Merkel cell carcinoma (MCC) is an aggressive cutaneous neuroendocrine carcinoma. Incidence of MCC continues to rise, and risk factors include advanced age, pale skin, chronic sun exposure, and immune suppression. Diagnosing MCC utilizes a combination of morphology and immunohistochemistry. Merkel cell polyomavirus (MCPyV) is present in approximately 70-80% of MCCs and represents a key pathogenic driver in those MCCs. In contrast, MCPyV-negative MCCs arise through progressive accumulation of ultraviolet-light induced somatic mutations. Staging of MCC proceeds according to the American Joint Commission on Cancer (AJCC) 8th Edition, which utilizes features of the primary tumor together with regional lymph node(s) (clinically and/or pathologically detected) and/or distant metastases. Many potentially useful biomarkers have been studied to refine risk stratification in MCC. In recent years, the host immune infiltrate has been leveraged as immune checkpoint blockade has emerged as an efficacious mode of treatment for patients with advanced MCC.
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Affiliation(s)
- Michael T. Tetzlaff
- 0000 0001 2291 4776grid.240145.6Department of Pathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Unit 85, Houston, TX 77030 USA ,0000 0001 2291 4776grid.240145.6Department of Translational and Molecular Pathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Unit 85, Houston, TX 77030 USA
| | - Priyadharsini Nagarajan
- 0000 0001 2291 4776grid.240145.6Department of Pathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Unit 85, Houston, TX 77030 USA
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4
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Baez CF, Brandão Varella R, Villani S, Delbue S. Human Polyomaviruses: The Battle of Large and Small Tumor Antigens. Virology (Auckl) 2017; 8:1178122X17744785. [PMID: 29238174 PMCID: PMC5721967 DOI: 10.1177/1178122x17744785] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 10/30/2017] [Indexed: 12/17/2022] Open
Abstract
About 40 years ago, the large and small tumor antigens (LT-Ag and sT-Ag) of the polyomavirus (PyVs) simian vacuolating virus 40 have been identified and characterized. To date, it is well known that all the discovered human PyVs (HPyVs) encode these 2 multifunctional and tumorigenic proteins, expressed at viral replication early stage. The 2 T-Ags are able to transform cells both in vitro and in vivo and seem to play a distinct role in the pathogenesis of some tumors in humans. In addition, they are involved in viral DNA replication, transcription, and virion assembly. This short review focuses on the structural and functional features of the HPyVs’ LT-Ag and sT-Ag, with special attention to their transforming properties.
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Affiliation(s)
- Camila Freze Baez
- Department of Preventive Medicine, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Sonia Villani
- Department of Biomedical, Surgical and Dental Sciences, University of Milano, Milano, Italy
| | - Serena Delbue
- Department of Biomedical, Surgical and Dental Sciences, University of Milano, Milano, Italy
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Wang L, Harms PW, Palanisamy N, Carskadon S, Cao X, Siddiqui J, Patel RM, Zelenka-Wang S, Durham AB, Fullen DR, Harms KL, Su F, Shukla S, Mehra R, Chinnaiyan AM. Age and Gender Associations of Virus Positivity in Merkel Cell Carcinoma Characterized Using a Novel RNA In Situ Hybridization Assay. Clin Cancer Res 2017; 23:5622-5630. [PMID: 28606924 PMCID: PMC5600832 DOI: 10.1158/1078-0432.ccr-17-0299] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/28/2017] [Accepted: 06/05/2017] [Indexed: 12/14/2022]
Abstract
Purpose: Merkel cell carcinoma (MCC) is a highly aggressive neuroendocrine tumor of the skin. Merkel cell polyomavirus (MCPyV) plays an oncogenic role in the majority of MCCs. Detection of MCPyV in MCCs has diagnostic utility and prognostic potential. We investigated whether RNAscope, an RNA in situ hybridization (ISH) assay for detection of RNA transcripts in tissues, is useful for MCPyV detection.Experimental Design: We applied an RNAscope probe targeting MCPyV T antigen transcripts on tissue microarrays (TMA) and whole-tissue sections encompassing 87 MCCs from 75 patients, 14 carcinomas of other types, and benign tissues. For comparison, qPCR was performed on 57 cases of MCC from 52 patients.Results: RNA-ISH demonstrated the presence of MCPyV in 37 of 75 cases (49.3%). Notably, tumors from younger patients (<73 years) had a significantly higher virus positivity than those from elderly patients (≥73 years; 64.9% vs. 34.2%, P = 0.011). Female patients had a higher positive rate of MCPyV than male patients (66.7% vs. 39.6%, P = 0.032). Data from both RNA-ISH and qPCR were available for 57 samples. Considering MCPyV qPCR as the gold standard for determining MCPyV status, RNAscope had 100% sensitivity and 100% specificity. There was a strong correlation between qPCR copy number and RNA-ISH product score (Spearman correlation coefficient R2 = 0.932, P < 0.0001).Conclusions: RNA-ISH is comparably sensitive to qPCR for detection of MCPyV and allows for correlation with tissue morphology. This study also reveals a significant association between age, gender, and MCPyV positivity. Clin Cancer Res; 23(18); 5622-30. ©2017 AACR.
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Affiliation(s)
- Lisha Wang
- Michigan Center for Translational Pathology, University of Michigan Health System, Ann Arbor, Michigan
| | - Paul W Harms
- Michigan Center for Translational Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Department of Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Department of Dermatology, University of Michigan Health System, Ann Arbor, Michigan
| | - Nallasivam Palanisamy
- Michigan Center for Translational Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Department of Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Department of Urology, Henry Ford Health System, Detroit, Michigan
| | | | - Xuhong Cao
- Michigan Center for Translational Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Howard Hughes Medical Institute, Ann Arbor, Michigan
| | - Javed Siddiqui
- Michigan Center for Translational Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Department of Pathology, University of Michigan Health System, Ann Arbor, Michigan
| | - Rajiv M Patel
- Department of Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Department of Dermatology, University of Michigan Health System, Ann Arbor, Michigan
| | - Sylvia Zelenka-Wang
- Michigan Center for Translational Pathology, University of Michigan Health System, Ann Arbor, Michigan
| | - Alison B Durham
- Department of Dermatology, University of Michigan Health System, Ann Arbor, Michigan
- Comprehensive Cancer Center, University of Michigan Health System, Ann Arbor, Michigan
| | - Douglas R Fullen
- Department of Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Department of Dermatology, University of Michigan Health System, Ann Arbor, Michigan
| | - Kelly L Harms
- Department of Dermatology, University of Michigan Health System, Ann Arbor, Michigan
- Comprehensive Cancer Center, University of Michigan Health System, Ann Arbor, Michigan
| | - Fengyun Su
- Michigan Center for Translational Pathology, University of Michigan Health System, Ann Arbor, Michigan
| | - Sudhanshu Shukla
- Michigan Center for Translational Pathology, University of Michigan Health System, Ann Arbor, Michigan
| | - Rohit Mehra
- Michigan Center for Translational Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Department of Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Comprehensive Cancer Center, University of Michigan Health System, Ann Arbor, Michigan
| | - Arul M Chinnaiyan
- Michigan Center for Translational Pathology, University of Michigan Health System, Ann Arbor, Michigan.
- Department of Pathology, University of Michigan Health System, Ann Arbor, Michigan
- Howard Hughes Medical Institute, Ann Arbor, Michigan
- Comprehensive Cancer Center, University of Michigan Health System, Ann Arbor, Michigan
- Department of Urology, University of Michigan Health System, Ann Arbor, Michigan
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6
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Xie H, Liu T, Wang N, Björnhagen V, Höög A, Larsson C, Lui WO, Xu D. TERT promoter mutations and gene amplification: promoting TERT expression in Merkel cell carcinoma. Oncotarget 2015; 5:10048-57. [PMID: 25301727 PMCID: PMC4259404 DOI: 10.18632/oncotarget.2491] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Telomerase activation through the induction of its catalytic component TERT is essential in carcinogenesis. The regulatory mechanism and clinical significance underlying cancer-specific TERT expression have been extensively investigated in various human malignancies, but little is known about these in Merkel cell carcinoma (MCC), an aggressive neuroendocrine skin tumor. Here we addressed these issues by determining TERT promoter mutations, gene amplification, mRNA expression and association with clinical variables in MCC. TERT mRNA was expressed in 6/6 MCC cell lines and 41 of 43 tumors derived from 35 MCC patients. Telomerase activity was detectable in all 6 cell lines and 11 tumors analyzed. TERT promoter mutations were identified in 1/6 cell lines and 4/35 (11.4%) MCC cases. The mutation exhibited UV signature and occurred in sun-exposed areas. Increased TERT gene copy numbers were observed in 1/6 cell lines and 11/14 (79%) tumors, and highly correlated with its mRNA expression (r = 0.7419, P = 0.0024). Shorter overall survival was significantly associated with higher TERT mRNA levels in MCC patients (P = 0.032). Collectively, TERT expression and telomerase activity is widespread in MCC, and may be attributable to TERT promoter mutations and gene amplification. Higher TERT expression predicts poor patient outcomes.
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Affiliation(s)
- Hong Xie
- Department of Oncology-Pathology, Cancer Center Karolinska. Contributed equally to this work
| | - Tiantian Liu
- Department of Pathology, Shandong University School of Medicine, Jinan, PR China. Contributed equally to this work
| | - Na Wang
- Department of Oncology-Pathology, Cancer Center Karolinska
| | - Viveca Björnhagen
- Department of Reconstructive Plastic Surgery, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Anders Höög
- Department of Oncology-Pathology, Cancer Center Karolinska
| | | | - Weng-Onn Lui
- Department of Oncology-Pathology, Cancer Center Karolinska
| | - Dawei Xu
- Department of Medicine-Solna, Division of Hematology and Center for Molecular Medicine. Karolinska Institutet and Karolinska University Hospital Solna, Stockholm, Sweden
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7
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Cytokeratin 20-negative Merkel cell carcinoma is infrequently associated with the Merkel cell polyomavirus. Mod Pathol 2015; 28:498-504. [PMID: 25394777 DOI: 10.1038/modpathol.2014.148] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 09/02/2014] [Accepted: 09/03/2014] [Indexed: 02/06/2023]
Abstract
Merkel cell carcinoma is a rare, highly aggressive cutaneous neuroendocrine carcinoma most commonly seen in sun-damaged skin. Histologically, the tumor consists of primitive round cells with fine chromatin and numerous mitoses. Immunohistochemical stains demonstrate expression of neuroendocrine markers. In addition, cytokeratin 20 (CK20) is expressed in ∼95% of cases. In 2008, Merkel cell carcinoma was shown to be associated with a virus now known as Merkel cell polyomavirus in ∼80% of cases. Prognostic and mechanistic differences between Merkel cell polyomavirus-positive and Merkel cell polyomavirus-negative Merkel cell carcinoma may exist. There has been the suggestion that CK20-negative Merkel cell carcinomas less frequently harbor Merkel cell polyomavirus, but a systematic investigation for Merkel cell polyomavirus incidence in CK20-negative Merkel cell carcinoma has not been done. To test the hypothesis that Merkel cell polyomavirus is less frequently associated with CK20-negative Merkel cell carcinoma, we investigated 13 CK20-negative Merkel cell carcinomas from the files of the Cleveland Clinic and the University of Michigan for the virus. The presence or absence of Merkel cell polyomavirus was determined by quantitative PCR performed for Large T and small T antigens, with sequencing of PCR products to confirm the presence of Merkel cell polyomavirus. Ten of these (77%) were negative for Merkel cell polyomavirus and three (23%) were positive for Merkel cell polyomavirus. Merkel cell polyomavirus is less common in CK20-negative Merkel cell carcinoma. Larger series and clinical follow-up may help to determine whether CK20-negative Merkel cell carcinoma is mechanistically and prognostically unique.
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8
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Hannigan GD, Grice EA. Microbial ecology of the skin in the era of metagenomics and molecular microbiology. Cold Spring Harb Perspect Med 2013; 3:a015362. [PMID: 24296350 DOI: 10.1101/cshperspect.a015362] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The skin is the primary physical barrier between the body and the external environment and is also a substrate for the colonization of numerous microbes. Previously, dermatological microbiology research was dominated by culture-based techniques, but significant advances in genomic technologies have enabled the development of less-biased, culture-independent approaches to characterize skin microbial communities. These molecular microbiology approaches illustrate the great diversity of microbiota colonizing the skin and highlight unique features such as site specificity, temporal dynamics, and interpersonal variation. Disruptions in skin commensal microbiota are associated with the progression of many dermatological diseases. A greater understanding of how skin microbes interact with each other and with their host, and how we can therapeutically manipulate those interactions, will provide powerful tools for treating and preventing dermatological disease.
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Affiliation(s)
- Geoffrey D Hannigan
- Department of Dermatology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania 19104
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Xie H, Lee L, Caramuta S, Höög A, Browaldh N, Björnhagen V, Larsson C, Lui WO. MicroRNA expression patterns related to merkel cell polyomavirus infection in human merkel cell carcinoma. J Invest Dermatol 2013; 134:507-517. [PMID: 23962809 PMCID: PMC3898110 DOI: 10.1038/jid.2013.355] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 07/04/2013] [Accepted: 07/18/2013] [Indexed: 01/09/2023]
Abstract
Merkel cell carcinoma (MCC) is an aggressive and lethal type of neuroendocrine skin cancer. Mutated Merkel cell polyomavirus (MCV) is commonly found in MCC, and leads to upregulation of the survivin oncogene. However, ∼20% of MCC tumors do not have detectable MCV, suggesting alternative etiologies for this tumor type. In this study, our aim was to evaluate microRNA (miRNA) expression profiles and their associations with MCV status and clinical outcomes in MCC. We showed that miRNA expression profiles were distinct between MCV-positive (MCV+) and MCV-negative (MCV−) MCCs and further validated that miR-203, miR-30a-3p, miR-769-5p, miR-34a, miR-30a-5p, and miR-375 were significantly different. We also identified a subset of miRNAs associated with tumor metastasis and MCC-specific survival. Functionally, overexpression of miR-203 was found to inhibit cell growth, induce cell cycle arrest, and regulate survivin expression in MCV− MCC cells, but not in MCV+ MCC cells. Our findings reveal a mechanism of survivin expression regulation in MCC cells, and provide insights into the role of miRNAs in MCC tumorigenesis.
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Affiliation(s)
- Hong Xie
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden; Cancer Center Karolinska, Karolinska University Hospital, Stockholm, Sweden.
| | - Linkiat Lee
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden; Cancer Center Karolinska, Karolinska University Hospital, Stockholm, Sweden
| | - Stefano Caramuta
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden; Cancer Center Karolinska, Karolinska University Hospital, Stockholm, Sweden
| | - Anders Höög
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden; Department of Clinical Pathology and Cytology, Karolinska University Hospital, Stockholm, Sweden
| | - Nanna Browaldh
- Department of Ear, Nose and Throat, Karolinska University Hospital, Stockholm, Sweden
| | - Viveca Björnhagen
- Department of Reconstructive Plastic Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Catharina Larsson
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden; Cancer Center Karolinska, Karolinska University Hospital, Stockholm, Sweden
| | - Weng-Onn Lui
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden; Cancer Center Karolinska, Karolinska University Hospital, Stockholm, Sweden.
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10
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Hourdequin KC, Lefferts JA, Brennick JB, Ernstoff MS, Tsongalis GJ, Pipas JM. Merkel cell polyomavirus and extrapulmonary small cell carcinoma. Oncol Lett 2013; 6:1049-1052. [PMID: 24137462 PMCID: PMC3796380 DOI: 10.3892/ol.2013.1483] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 07/05/2013] [Indexed: 12/02/2022] Open
Abstract
The Merkel cell polyomavirus (MCV) is involved in the development of up to 100% of Merkel cell cancer (MCC) cases. Early studies have reported that the virus was infrequently detected in other small cell or neuroendocrine lung carcinomas, which share histological features with MCC. The present study investigated the presence of MCV in cases of extrapulmonary small cell carcinoma (ESCC), which also shares histological features with MCC. A total of 25 cases of ESCC that were diagnosed between 2004 and 2009 were identified at The Dartmouth Hitchcock Medical Center. Archived tissue was available for testing in 16 of these cases. A total of 11 tissue specimens of MCC were used as positive controls. DNA that was extracted from the archived tissue was subjected to five separate quantitative (q)PCR assays for the detection of four MCV genomic targets. MCV DNA was detected in 3/16 (19%) of the ESCCs and in all 11 MCCs. In the three MCV-positive ESCCs, the viral target was only detected by either one or two of the PCR assays. In 8/11 MCV-positive MCCs, the DNA tested positive by either three or all four assays and the remaining three MCCs tested positive by either one or two assays. The β-globin endogenous control was detected in all the samples that were tested. Although MCC and ESCC share numerous histological features, MCV is detected at a lower frequency in ESCC. The possible role for MCV in the etiology of ESCC remains uncertain and may account for the rare cases of ESCC with no other identifiable etiology. The failure of other assays to detect MCV may be due to sequence variability in the MCV genome.
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Affiliation(s)
- Kathryn C Hourdequin
- Department of Medicine, Section of Hematology/Oncology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA ; Dartmouth Hitchcock Medical Center and Norris Cotton Cancer Center, Lebanon, NH, USA
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11
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Kumar A, Kantele A, Järvinen T, Chen T, Kavola H, Sadeghi M, Hedman K, Franssila R. Trichodysplasia spinulosa-associated polyomavirus (TSV) and Merkel cell polyomavirus: correlation between humoral and cellular immunity stronger with TSV. PLoS One 2012; 7:e45773. [PMID: 23029236 PMCID: PMC3454342 DOI: 10.1371/journal.pone.0045773] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Accepted: 08/22/2012] [Indexed: 12/19/2022] Open
Abstract
Merkel Cell Polyomavirus (MCV) is a common infectious agent likely to be involved in the pathogenesis of most Merkel cell carcinomas (MCC). Trichodysplasia spinulosa-associated polyomavirus (TSV), which exhibit high seroprevalence in general population, has been detected in trichodysplasia spinulosa (TS) skin lesions suggesting an etiological role for this disease. Previous studies have shown strong MCV-specific T-cell responses, while no data exist on T-cell immunity against TSV. In order to characterize Th-cell immunity against TSV, and to allow comparisons with the MCV-specific Th-cell immunity, we studied TSV-specific proliferation, IFN-γ, IL-10 and IL-13, and MCV-specific IFN-γ and IL-10 responses in 51 healthy volunteers, and in one MCC patient. Recombinant TSV and MCV VP1 virus-like particles (VLPs) were used as antigens. A significant correlation was found between virus-specific Th-cell and antibody responses with TSV; with MCV it proved weaker. Despite significant homology in amino acid sequences, Th-cell crossreactivity was not evident between these viruses. Some subjects seronegative to both TSV and MCV exhibited Th-cell responses to both viruses. The agent initially priming these Th-cells remains an enigma. As CD8+ cells specific to MCV T-Ag oncoprotein clearly provide an important defense against established MCC, the MCV VP1-specific Th-cells may, by suppressing MCV replication with antiviral cytokines such as IFN-γ, significantly contribute to preventing the full process of oncogenesis.
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MESH Headings
- Adult
- Antigens, Fungal/immunology
- Antigens, Viral/immunology
- Candida albicans/immunology
- Capsid Proteins/immunology
- Carcinoma, Merkel Cell/immunology
- Carcinoma, Merkel Cell/virology
- Cell Proliferation
- Cells, Cultured
- Female
- Histocompatibility Antigens Class II/metabolism
- Histocompatibility Antigens Class II/physiology
- Humans
- Immunity, Cellular
- Immunity, Humoral
- Immunoglobulin G/blood
- Interferon-gamma/metabolism
- Interleukin-10/metabolism
- Male
- Merkel cell polyomavirus/immunology
- Merkel cell polyomavirus/physiology
- Middle Aged
- Polyomavirus Infections/blood
- Polyomavirus Infections/immunology
- Polyomavirus Infections/virology
- T-Lymphocytes, Helper-Inducer/immunology
- T-Lymphocytes, Helper-Inducer/metabolism
- T-Lymphocytes, Helper-Inducer/physiology
- T-Lymphocytes, Helper-Inducer/virology
- Tumor Virus Infections/blood
- Tumor Virus Infections/immunology
- Tumor Virus Infections/virology
- Virus Replication
- Young Adult
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Affiliation(s)
- Arun Kumar
- Departments of Virology, Haartman Institute, University of Helsinki, Helsinki, Finland.
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