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Inherited Chromosomally Integrated Human Herpesvirus 6: Laboratory and Clinical Features. Microorganisms 2023; 11:microorganisms11030548. [PMID: 36985122 PMCID: PMC10052293 DOI: 10.3390/microorganisms11030548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 02/15/2023] [Indexed: 02/25/2023] Open
Abstract
Inherited chromosomally integrated human herpesvirus 6 (iciHHV-6) is a condition in which the complete HHV-6 genome is integrated into the chromosomes of the host germ cell and is vertically transmitted. The aims of this study were to identify iciHHV-6 prevalence in hospitalized patients and clinical features in individuals carrying this integration. HHV-6 PCR on hair follicles was used to confirm iciHHV-6 status when the blood viral load was more than 5 Log10 copies/mL. From January 2012 to June 2022, HHV-6 DNAemia was investigated in 2019 patients. In particular, 49 had a viral load higher than 6 Log10 copies/mL and HHV-6 DNA in hair follicles was positive. A viral load between 5.0 and 5.9 Log10 copies/mL was observed in 10 patients: 6 infants with acute HHV-6 infection and 4 patients with leukopenia and HHV-6 integration. Therefore, the iciHHV-6 prevalence in our population was 2.6% (53/2019). Adult patients with integration presented hematological (24%), autoimmune (11%), autoimmune neurological (19%), not-autoimmune neurological (22%), and other diseases (19%), whereas 5% had no clinically relevant disease. Although in our study population a high percentage of iciHHV-6 adult hospitalized patients presented a specific pathology, it is still unknown whether the integration is responsible for, or contributes to, the disease development.
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Kusakin AV, Goleva OV, Danilov LG, Krylov AV, Tsay VV, Kalinin RS, Tian NS, Eismont YA, Mukomolova AL, Chukhlovin AB, Komissarov AS, Glotov OS. The Telomeric Repeats of HHV-6A Do Not Determine the Chromosome into Which the Virus Is Integrated. Genes (Basel) 2023; 14:521. [PMID: 36833448 PMCID: PMC9957103 DOI: 10.3390/genes14020521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/22/2023] Open
Abstract
Human herpes virus 6A (HHV-6A) is able to integrate into the telomeric and subtelomeric regions of human chromosomes representing chromosomally integrated HHV-6A (ciHHV-6A). The integration starts from the right direct repeat (DRR) region. It has been shown experimentally that perfect telomeric repeats (pTMR) in the DRR region are required for the integration, while the absence of the imperfect telomeric repeats (impTMR) only slightly reduces the frequency of HHV-6 integration cases. The aim of this study was to determine whether telomeric repeats within DRR may define the chromosome into which the HHV-6A integrates. We analysed 66 HHV-6A genomes obtained from public databases. Insertion and deletion patterns of DRR regions were examined. We also compared TMR within the herpes virus DRR and human chromosome sequences retrieved from the Telomere-to-Telomere consortium. Our results show that telomeric repeats in DRR in circulating and ciHHV-6A have an affinity for all human chromosomes studied and thus do not define a chromosome for integration.
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Affiliation(s)
- Aleksey V. Kusakin
- Pediatric Research and Clinical Center for Infectious Diseases, 197022 St. Petersburg, Russia
- SCAMT Institute, ITMO University, 191002 St. Petersburg, Russia
| | - Olga V. Goleva
- Pediatric Research and Clinical Center for Infectious Diseases, 197022 St. Petersburg, Russia
| | - Lavrentii G. Danilov
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Nab. 7/9, 199034 St. Petersburg, Russia
| | - Andrey V. Krylov
- Pediatric Research and Clinical Center for Infectious Diseases, 197022 St. Petersburg, Russia
| | - Victoria V. Tsay
- Pediatric Research and Clinical Center for Infectious Diseases, 197022 St. Petersburg, Russia
| | - Roman S. Kalinin
- Pediatric Research and Clinical Center for Infectious Diseases, 197022 St. Petersburg, Russia
| | - Natalia S. Tian
- Pediatric Research and Clinical Center for Infectious Diseases, 197022 St. Petersburg, Russia
| | - Yuri A. Eismont
- Pediatric Research and Clinical Center for Infectious Diseases, 197022 St. Petersburg, Russia
| | - Anna L. Mukomolova
- Pediatric Research and Clinical Center for Infectious Diseases, 197022 St. Petersburg, Russia
| | - Alexei B. Chukhlovin
- Pediatric Research and Clinical Center for Infectious Diseases, 197022 St. Petersburg, Russia
- R.M.Gorbacheva Memorial Institute of Oncology, Hematology and Transplantation, Pavlov First Saint Petersburg State Medical University, 197022 St. Petersburg, Russia
| | | | - Oleg S. Glotov
- Pediatric Research and Clinical Center for Infectious Diseases, 197022 St. Petersburg, Russia
- D.O. Ott Research Institute of Obstetrics, Gynaecology, and Reproductology, 199034 St. Petersburg, Russia
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Obeid M, Gakhal I, McDonald PJ. Persistent viremia in an immunocompetent patient with inherited chromosomally integrated HHV-6B. Access Microbiol 2021; 3:000256. [PMID: 34888484 PMCID: PMC8650848 DOI: 10.1099/acmi.0.000256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 07/05/2021] [Indexed: 11/18/2022] Open
Abstract
Human herpesvirus-6 (HHV-6), the virus which causes roseola, has traditionally been associated with benign and self-limited childhood illness. However, HHV-6 establishes lifelong latency and can reactivate in immunocompromised adult patients. In about 1% of cases, it integrates into the human genome as inherited chromosomally integrated HHV-6 (iciHHV-6). We report the case of a 70-year-old man presenting with altered mental status and agitation. His infectious workup revealed a cerebrospinal fluid sample positive for HHV-6 with virus detectable in the blood as well. He was subsequently treated with ganciclovir. HHV-6 viremia (DNAemia) persisted, and the antiviral medications were switched to foscarnet under the assumption of treatment failure due to drug resistance. After several admissions to the hospital for the same complaint, and after noticing that DNAemia persisted despite adequate treatment for HHV-6, infectious disease specialists ordered testing for chromosomally integrated virus. Test results confirmed the presence of iciHHV-6, explaining his consistently elevated serum viral load. Primary HHV-6 infection in adults causes a transient increase in viral load with resolution and clearance after a few weeks while iciHHV-6 is characterized by persistent detection of viral DNA at a high copy number. Individuals with iciHHV-6 can develop HHV-6 disease and are at increased risk for active viral replication when treated with immunosuppressive medications, but only mRNA testing, which is not widely available can differentiate between latent and active infection. This makes the decision to treat challenging in this patient population. When faced with a positive HHV-6 DNA result in the setting of equivocal symptoms, clinicians should consider the possibility of chromosomally integrated virus rather than drug-resistant virus in order to reduce exposure to potentially toxic antiviral medications.
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Affiliation(s)
- Michele Obeid
- Department of Internal Medicine, Hurley Medical Center/Michigan State University, Flint, Michigan, USA
| | - Inderdeep Gakhal
- Department of Internal Medicine, Hurley Medical Center/Michigan State University, Flint, Michigan, USA
| | - Philip J McDonald
- Department of Internal Medicine, Hurley Medical Center/Michigan State University, Flint, Michigan, USA
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Miura H, Ohye T, Kozawa K, Hattori F, Kawamura Y, Ihira M, Kurahashi H, Yoshikawa T. Coinfection With Human Herpesvirus (HHV)-6B in Immunocompetent, Healthy Individuals With Chromosomally Integrated HHV-6A. J Pediatric Infect Dis Soc 2021; 10:175-178. [PMID: 31972018 DOI: 10.1093/jpids/piaa009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 01/12/2020] [Indexed: 11/13/2022]
Abstract
Immunocompetent sisters with chromosomally integrated human herpesvirus 6A (HHV-6A) transiently excreted HHV-6B genome in their saliva. They did not have past histories of exanthema subitum but had antibodies against HHV-6A and HHV-6B. This suggests that endogenous HHV-6A may modify the clinical features of HHV-6B coinfection.
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Affiliation(s)
- Hiroki Miura
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Tamae Ohye
- Department of Clinical Laboratory Medicine, Graduate School of Health Sciences, Fujita Health University, Toyoake, Japan
| | - Kei Kozawa
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Fumihiko Hattori
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Yoshiki Kawamura
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Masaru Ihira
- Faculty of Clinical Engineering, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Tetsushi Yoshikawa
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
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Miura H, Kawamura Y, Ohye T, Hattori F, Kozawa K, Ihira M, Yatsuya H, Nishizawa H, Kurahashi H, Yoshikawa T. Inherited Chromosomally Integrated Human Herpesvirus 6 Is a Risk Factor for Spontaneous Abortion. J Infect Dis 2020; 223:1717-1723. [PMID: 32984876 DOI: 10.1093/infdis/jiaa606] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 09/25/2020] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Human herpesvirus 6 (HHV-6) can be genetically transmitted from parent to child as inherited chromosomally integrated HHV-6 (iciHHV-6). HHV-6 reactivation occurs in pregnant women with iciHHV-6. We found no sex differences in the frequency of index cases with iciHHV-6 but inheritance from the father was more common. We evaluated the association between iciHHV-6 status and spontaneous abortion. METHODS iciHHV-6 was confirmed by high viral DNA copy numbers in whole blood and somatic cells. The origin of integrated viral genome, paternal or maternal, was examined using the same method. The pregnancy history of 23 mothers in families with iciHHV-6 and 285 mothers in families without iciHHV-6 was abstracted. RESULTS Of 23 iciHHV-6 index cases, 8 mothers and 15 fathers had iciHHV-6. Spontaneous abortion rates in mothers with and mothers without/fathers with iciHHV-6 and mothers in families without iciHHV-6 were 27.6%, 10.3%, and 14.8%, respectively (P = .012). Mothers with iciHHV-6 (odds ratio [OR], 6.41; 95% confidence interval [CI], 1.10-37.4) and maternal age at the most recent pregnancy ≥40 years (OR, 3.91; 95% CI, 1.30-11.8) were associated with 2 or more spontaneous abortions. CONCLUSIONS Mothers with iciHHV-6 is a risk factor for spontaneous abortion.
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Affiliation(s)
- Hiroki Miura
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Yoshiki Kawamura
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Tamae Ohye
- Department of Clinical Laboratory Medicine, Graduate School of Health Sciences, Fujita Health University, Toyoake, Japan
| | - Fumihiko Hattori
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Kei Kozawa
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Masaru Ihira
- Faculty of Clinical Engineering, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Hiroshi Yatsuya
- Department of Public Health, Fujita Health University School of Medicine, Toyoake, Japan
| | - Haruki Nishizawa
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Tetsushi Yoshikawa
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
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Inoue K, Miura H, Hoshino A, Kamiya T, Tanita K, Ohye T, Park M, Yanagimachi M, Takagi M, Imai K, Morio T, Yoshikawa T, Kanegane H. Inherited chromosomally integrated human herpesvirus‐6 in a patient with XIAP deficiency. Transpl Infect Dis 2020; 22:e13331. [DOI: 10.1111/tid.13331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 05/12/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Kento Inoue
- Department of Pediatrics and Developmental Biology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
| | - Hiroki Miura
- Department of Pediatrics Graduate School of Health Sciences Fujita Health University School of Medicine Toyoake Aichi Japan
| | - Akihiro Hoshino
- Department of Pediatrics and Developmental Biology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
| | - Takahiro Kamiya
- Department of Pediatrics and Developmental Biology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
| | - Kay Tanita
- Department of Pediatrics and Developmental Biology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
| | - Tamae Ohye
- Department of Clinical Laboratory Medicine Graduate School of Health Sciences Fujita Health University School of Medicine Toyoake Aichi Japan
| | - Myoung‐Ja Park
- Department of Hematology/Oncology Gunma Children's Medical Center Gunma Japan
| | - Masakatsu Yanagimachi
- Department of Pediatrics and Developmental Biology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
| | - Masatoshi Takagi
- Department of Pediatrics and Developmental Biology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
| | - Kohsuke Imai
- Department of Community Pediatrics, Perinatal and Maternal Medicine Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
| | - Tomohiro Morio
- Department of Pediatrics and Developmental Biology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
| | - Tetsushi Yoshikawa
- Department of Pediatrics Graduate School of Health Sciences Fujita Health University School of Medicine Toyoake Aichi Japan
| | - Hirokazu Kanegane
- Deprtment of Child Health and Development Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
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Current understanding of human herpesvirus 6 (HHV-6) chromosomal integration. Antiviral Res 2020; 176:104720. [PMID: 32044155 DOI: 10.1016/j.antiviral.2020.104720] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/21/2020] [Accepted: 01/23/2020] [Indexed: 12/12/2022]
Abstract
Human herpesvirus 6A (HHV-6A) and 6B (HHV-6B) are members of the genus Roseolovirus in the Betaherpesvirinae subfamily. HHV-6B infects humans in the first years of life, has a seroprevalence of more than 90% and causes Roseola Infantum, but less is known about HHV-6A. While most other herpesviruses maintain their latent genome as a circular episome, HHV-6A and HHV-6B (HHV-6A/B) have been shown to integrate their genome into the telomeres of infected cells. HHV-6A/B can also integrate into the chromosomes of germ cells, resulting in individuals carrying a copy of the virus genome in every nucleated cell of their bodies. This review highlights our current understanding of HHV-6A/B integration and reactivation as well as aspects that should be addressed in the future of this relatively young research area. It forms part of an online symposium on the prevention and therapy of DNA virus infections, dedicated to the memory of Mark Prichard.
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Miura H, Kawamura Y, Hattori F, Kozawa K, Ihira M, Ohye T, Kurahashi H, Yoshikawa T. Chromosomally integrated human herpesvirus 6 in the Japanese population. J Med Virol 2018; 90:1636-1642. [DOI: 10.1002/jmv.25244] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 06/04/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Hiroki Miura
- Department of Pediatrics; Fujita Health University School of Medicine; Toyoake Aichi Japan
| | - Yoshiki Kawamura
- Department of Pediatrics; Fujita Health University School of Medicine; Toyoake Aichi Japan
| | - Fumihiko Hattori
- Department of Pediatrics; Fujita Health University School of Medicine; Toyoake Aichi Japan
| | - Kei Kozawa
- Department of Pediatrics; Fujita Health University School of Medicine; Toyoake Aichi Japan
| | - Masaru Ihira
- Faculty of Clinical Engineering, Fujita Health University School of Health Sciences; Toyoake Aichi Japan
| | - Tamae Ohye
- Department of Clinical Laboratory Medicine; Graduate School of Health Sciences, Fujita Health University; Toyoake Aichi Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics; Institute for Comprehensive Medical Science, Fujita Health University; Toyoake Aichi Japan
| | - Tetsushi Yoshikawa
- Department of Pediatrics; Fujita Health University School of Medicine; Toyoake Aichi Japan
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9
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Pantry SN, Medveczky PG. Latency, Integration, and Reactivation of Human Herpesvirus-6. Viruses 2017; 9:v9070194. [PMID: 28737715 PMCID: PMC5537686 DOI: 10.3390/v9070194] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 07/18/2017] [Accepted: 07/20/2017] [Indexed: 12/14/2022] Open
Abstract
Human herpesvirus-6A (HHV-6A) and human herpesvirus-6B (HHV-6B) are two closely related viruses that infect T-cells. Both HHV-6A and HHV-6B possess telomere-like repeats at the terminal regions of their genomes that facilitate latency by integration into the host telomeres, rather than by episome formation. In about 1% of the human population, human herpes virus-6 (HHV-6) integration into germline cells allows the viral genome to be passed down from one generation to the other; this condition is called inherited chromosomally integrated HHV-6 (iciHHV-6). This review will cover the history of HHV-6 and recent works that define the biological differences between HHV-6A and HHV-6B. Additionally, HHV-6 integration and inheritance, the capacity for reactivation and superinfection of iciHHV-6 individuals with a second strain of HHV-6, and the role of hypomethylation of human chromosomes during integration are discussed. Overall, the data suggest that integration of HHV-6 in telomeres represent a unique mechanism of viral latency and offers a novel tool to study not only HHV-6 pathogenesis, but also telomere biology. Paradoxically, the integrated viral genome is often defective especially as seen in iciHHV-6 harboring individuals. Finally, gaps in the field of HHV-6 research are presented and future studies are proposed.
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Affiliation(s)
- Shara N Pantry
- College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd, MDC Box 7, Tampa, FL 33612, USA.
- Miller School of Medicine, University of Miami, Life Sciences and Technology Park, 1951 NW 7th Avenue Ste. 270, Miami, FL 33136, USA.
| | - Peter G Medveczky
- College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd, MDC Box 7, Tampa, FL 33612, USA.
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Wood ML, Royle NJ. Chromosomally Integrated Human Herpesvirus 6: Models of Viral Genome Release from the Telomere and Impacts on Human Health. Viruses 2017; 9:E184. [PMID: 28704957 PMCID: PMC5537676 DOI: 10.3390/v9070184] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 06/30/2017] [Accepted: 07/05/2017] [Indexed: 12/11/2022] Open
Abstract
Human herpesvirus 6A and 6B, alongside some other herpesviruses, have the striking capacity to integrate into telomeres, the terminal repeated regions of chromosomes. The chromosomally integrated forms, ciHHV-6A and ciHHV-6B, are proposed to be a state of latency and it has been shown that they can both be inherited if integration occurs in the germ line. The first step in full viral reactivation must be the release of the integrated viral genome from the telomere and here we propose various models of this release involving transcription of the viral genome, replication fork collapse, and t-circle mediated release. In this review, we also discuss the relationship between ciHHV-6 and the telomere carrying the insertion, particularly how the presence and subsequent partial or complete release of the ciHHV-6 genome may affect telomere dynamics and the risk of disease.
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Affiliation(s)
- Michael L Wood
- Department of Genetics, University of Leicester, University Road, Leicester LE1 7RH, UK.
| | - Nicola J Royle
- Department of Genetics, University of Leicester, University Road, Leicester LE1 7RH, UK.
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Kawamura Y, Ohye T, Miura H, Ihira M, Kato Y, Kurahashi H, Yoshikawa T. Analysis of the origin of inherited chromosomally integrated human herpesvirus 6 in the Japanese population. J Gen Virol 2017; 98:1823-1830. [PMID: 28699856 DOI: 10.1099/jgv.0.000834] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Integration of the complete human herpesvirus 6 (HHV-6) genome into the telomere of a chromosome has been reported in some individuals (inherited chromosomally integrated HHV-6; iciHHV-6). Since the proportion of iciHHV-6-positive individuals with integration in chromosome 22 is high in Japan, we hypothesized a founder effect. In this study, we sought to elucidate the reason for the high proportion of viral integrations into chromosome 22. We analyzed six cases of iciHHV-6A and two cases of iciHHV-6B, including one iciHHV-6A case with a matched sample from a father and one iciHHV-6B case with a matched sample from a mother. In iciHHV-6A, the same copy numbers of viral telomeric repeat sequences (TRS) and the same five microsatellite markers were detected in both the index case and paternal sample. Moreover, the same five microsatellite markers were demonstrated in four cases and the same copy numbers of viral TRS were demonstrated in two pairs of two cases. The present microsatellite analysis suggested that the viral genomes detected in some iciHHV-6A patients were derived from a common ancestral integration.
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Affiliation(s)
- Yoshiki Kawamura
- Department of Pediatrics, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan.,Present address: Division of Viral Products, Office of Vaccines Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, 1090340 New Hampshire Avenue, Silver Spring, MD 20993, USA
| | - Tamae Ohye
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan.,Department of Molecular Laboratory Medicine, Faculty of Medical Technology, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Hiroki Miura
- Department of Pediatrics, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Masaru Ihira
- Faculty of Clinical Engineering, Fujita Health University School of Health Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Yuri Kato
- Department of Clinical Laboratory, Fujita Health University Hospital, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Tetsushi Yoshikawa
- Department of Pediatrics, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
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12
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Yamada Y, Osumi T, Imadome KI, Takahashi E, Ohye T, Yoshikawa T, Tomizawa D, Kato M, Matsumoto K. Transmission of chromosomally integrated human herpesvirus 6 via cord blood transplantation. Transpl Infect Dis 2016; 19. [PMID: 27859994 DOI: 10.1111/tid.12636] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 08/10/2016] [Accepted: 08/13/2016] [Indexed: 11/28/2022]
Abstract
Chromosomally integrated human herpesvirus 6 (ciHHV-6) can be transmitted via allogeneic hematopoietic cell transplantation. To date, only a few cases have been reported. Here, we report a case identified as transmission of ciHHV-6 via cord blood transplantation. Distinguishing transmission of ciHHV-6 from HHV-6 reactivation in cases with high titer of HHV-6 DNA load after transplantation is important to prevent unnecessary exposure to antiviral drugs that could be toxic.
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Affiliation(s)
- Yuji Yamada
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Tomoo Osumi
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Ken-Ichi Imadome
- Division of Advanced Medicine for Virus Infections, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Etsuko Takahashi
- Division of Advanced Medicine for Virus Infections, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Tamae Ohye
- Department of Molecular Laboratory Medicine, Faculty of Medical Technology, School of Health Sciences, Fujita Health University, Toyoake, Japan
| | | | - Daisuke Tomizawa
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Motohiro Kato
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Kimikazu Matsumoto
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
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