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Kobayashi N, Shimada K, Ishii A, Osaka R, Nishiyama T, Shigeta M, Yanagisawa H, Oka N, Kondo K. Identification of a strong genetic risk factor for major depressive disorder in the human virome. iScience 2024; 27:109203. [PMID: 38414857 PMCID: PMC10897923 DOI: 10.1016/j.isci.2024.109203] [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: 06/13/2023] [Revised: 11/07/2023] [Accepted: 02/07/2024] [Indexed: 02/29/2024] Open
Abstract
The heritability of major depressive disorder (MDD) is reportedly 30-50%. However, the genetic basis of its heritability remains unknown. Within SITH-1, a risk factor for MDD in human herpesvirus 6B (HHV-6B), we discovered a gene polymorphism with a large odds ratio for an association with MDD. It was a sequence whose number of repeats was inversely correlated with SITH-1 expression. This number was significantly lower in MDD patients. Rates for 17 or fewer repeats of the sequence were 67.9% for MDD and 28.6% for normal controls, with an odds ratio of 5.28. For patients with 17 or less repeats, the rate for presence of another MDD patient in their families was 47.4%, whereas there were no MDD patients in the families of patients with more than 17 repeats. Since HHV-6B is transmitted primarily mother to child and within families and persists for life, this gene polymorphism could potentially influence heritability of MDD.
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Affiliation(s)
- Nobuyuki Kobayashi
- Department of Virology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Kazuya Shimada
- Department of Virology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Azusa Ishii
- Department of Virology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Rui Osaka
- Department of Virology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Toshiko Nishiyama
- Department of Public Health & Environmental Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Masahiro Shigeta
- Department of Psychiatry, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Hiroyuki Yanagisawa
- Department of Public Health & Environmental Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Naomi Oka
- Department of Virology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Kazuhiro Kondo
- Department of Virology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
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Alharshawi K, Cox B, Ariza ME. Examination of control asymptomatic cohorts reveals heightened anti-EBV and HHV-6 A/B dUTPase antibodies in the aging populations. J Med Virol 2022; 94:3464-3468. [PMID: 35315111 PMCID: PMC9117428 DOI: 10.1002/jmv.27728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 11/18/2022]
Abstract
Members of the human Herpesviridae are found in high prevalence in the human virome. While these viruses are known to cause numerous disease pathologies in symptomatic individuals little is known concerning the role that these viruses may have in modulating the host immune system in asymptomatic “healthy” individuals, especially during the aging process. Examination of three cohorts of “healthy asymptomatic” individuals (n = 255) for the presence of antibodies against the herpesviruses deoxyuridine triphosphate nucleotidohydrolase (dUTPase) as a marker for lytic/abortive‐lytic replication demonstrated that all cohorts exhibited differential anti‐herpesvirus dUTPase antibodies positivity frequencies ranging from 40.4% to 84% with some individuals in these cohorts expressing antibodies to the dUTPases of multiple herpesviruses (17.2%–56%). Furthermore, our results demonstrate that there was a statistically significant difference in anti‐human herpesvirus 6 A and 6B (HHV‐6 A/B) dUTPase antibodies in Cohort 3 (age = 66.2 ± 15.02 years) versus Cohort 1 (age 46.88 ± 8.61 years), suggesting that reactivation of HHV‐6 A/B is not attenuated by aging. It is well established/documented that herpesvirus dUTPases induce immune dysfunction, as such it is of critical importance that additional studies be performed to determine how these viral proteins alter immune responses in asymptomatic individuals.
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Affiliation(s)
- Khaled Alharshawi
- Department of Cancer Biology and Genetics, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Brandon Cox
- Department of Cancer Biology and Genetics, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Maria E Ariza
- Department of Cancer Biology and Genetics, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA.,Institute for Behavioral Medicine Research, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
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Miura H, Ihira M, Kozawa K, Kawamura Y, Higashimoto Y, Hattori F, Yoshikawa T. Effect of Lactococcus lactis Strain Plasma on HHV-6 and HHV-7 Shedding in Saliva: A Prospective Observational Study. Microorganisms 2021; 9:microorganisms9081683. [PMID: 34442762 PMCID: PMC8401688 DOI: 10.3390/microorganisms9081683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 07/27/2021] [Accepted: 08/03/2021] [Indexed: 01/25/2023] Open
Abstract
HHV-6 and HHV-7 can reactivate in the salivary gland in response to various host stresses. Lactococcus lactis strain Plasma (LC-Plasma) can activate plasmacytoid dendritic cells (pDCs) and decrease viral infection. We investigated whether LC-Plasma intake could decrease HHV-6 and HHV-7 reactivation in the salivary gland. A total of 54 healthy volunteers were enrolled in this study. Participants took LC-Plasma granules daily for 6 weeks. Saliva samples were collected from subjects weekly for 4 weeks before (first), during (second), and after (third period) LC-Plasma intake. There was a 2-week interval between the first and second periods and a 3-week interval between the second and third periods. Mean salivary HHV-6 and HHV-7 DNA loads were compared among the three observation periods. In the first period (baseline data of viral DNA shedding), HHV-6 DNA shedding was significantly higher in subjects under 40 years old, and HHV-7 DNA shedding was significantly higher in males. HHV-6 and HHV-7 DNA loads did not significantly differ between periods. Meanwhile, in a subgroup analysis of the subjects under 40 years old, HHV-6 DNA load was significantly lower in the second period than in the first period. LC-Plasma decreases HHV-6 reactivation in the salivary glands in younger adults.
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Affiliation(s)
- Hiroki Miura
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake 470-1192, Japan; (K.K.); (Y.K.); (F.H.); (T.Y.)
- Correspondence: ; Tel.: +81-562-93-9251
| | - Masaru Ihira
- Faculty of Clinical Engineering, Fujita Health University School of Health Sciences, Toyoake 470-1192, Japan;
| | - Kei Kozawa
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake 470-1192, Japan; (K.K.); (Y.K.); (F.H.); (T.Y.)
| | - Yoshiki Kawamura
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake 470-1192, Japan; (K.K.); (Y.K.); (F.H.); (T.Y.)
| | - Yuki Higashimoto
- Faculty of Medical Technology, Fujita Health University School of Health Sciences, Toyoake 470-1192, Japan;
| | - Fumihiko Hattori
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake 470-1192, Japan; (K.K.); (Y.K.); (F.H.); (T.Y.)
| | - Tetsushi Yoshikawa
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake 470-1192, Japan; (K.K.); (Y.K.); (F.H.); (T.Y.)
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Nakayama H, Yamazaki R, Kato J, Koda Y, Sakurai M, Mori T. Impact of Specific Antibody Level on Human Herpesvirus 6 Reactivation after Allogeneic Stem Cell Transplantation. Transplant Cell Ther 2020; 27:174.e1-174.e5. [PMID: 33830031 DOI: 10.1016/j.jtct.2020.10.011] [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: 08/21/2020] [Revised: 10/10/2020] [Accepted: 10/14/2020] [Indexed: 11/25/2022]
Abstract
The majority of adults are seropositive for human herpesvirus 6 (HHV-6). HHV-6 reactivation can occur after allogeneic hematopoietic stem cell transplantation (HSCT) and lead to life-threatening central nervous system disorders. In this prospective study, we evaluated the relationship between HHV-6 reactivation and anti-HHV-6 IgG antibody levels in recipients of allogeneic HSCT. The HHV-6 viral load in the plasma was quantitatively measured weekly after allogeneic HSCT by real-time polymerase chain reaction. The level of anti-HHV-6 IgG antibody was measured by enzyme-linked immunosorbent assay before and serially after transplantation. In 28 of the 56 evaluated patients (50%), HHV-6 reactivation was detected after transplantation. In a multivariate analysis, cord blood as the stem cell source was the only significant factor associated with HHV-6 reactivation (odds ratio, 8.6; 95% confidence interval, 2.3 to 32.6; P < .01). When evaluated in the recipients of cord blood transplantation (CBT), the anti-HHV-6 antibody level before transplantation was significantly lower in the patients with HHV-6 reactivation compared with those without (sample positivity index: median, 2.04 [range, 0.95 to 5.98] versus 4.15 [range, 3.93 to 5.65]; P < .05). The anti-HHV-6 antibody level was significantly decreased at 3 months post-transplantation compared with before transplantation (P < .01). Such differences were not observed in other stem cell sources. Our results demonstrate that the low anti-HHV-6 antibody level before transplantation was associated with the reactivation of HHV-6 after CBT, and that the anti-HHV-6 antibody level was significantly decreased specifically after CBT. These results suggest that HHV-6-specific humoral immunity plays a role in HHV-6 reactivation after CBT.
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Affiliation(s)
- Hitomi Nakayama
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Rie Yamazaki
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan; Center for Transfusion Medicine and Cell Therapy, Keio University School of Medicine, Tokyo, Japan.
| | - Jun Kato
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yuya Koda
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Masatoshi Sakurai
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takehiko Mori
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
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