1
|
Senpuku K, Kataoka-Nakamura C, Kunishima Y, Hirai T, Yoshioka Y. An inactivated whole-virion vaccine for Enterovirus D68 adjuvanted with CpG ODN or AddaVax elicits potent protective immunity in mice. Vaccine 2024; 42:2463-2474. [PMID: 38472067 DOI: 10.1016/j.vaccine.2024.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 03/14/2024]
Abstract
Enterovirus D68 (EV-D68), a pathogen that causes respiratory symptoms, mainly in children, has been implicated in acute flaccid myelitis, which is a poliomyelitis-like paralysis. Currently, there are no licensed vaccines or treatments for EV-D68 infections. Here, we investigated the optimal viral inactivation reagents, vaccine adjuvants, and route of vaccination in mice to optimize an inactivated whole-virion (WV) vaccine against EV-D68. We used formalin, β-propiolactone (BPL), and hydrogen peroxide as viral inactivation reagents and compared their effects on antibody responses. Use of any of these three viral inactivation reagents effectively induced neutralizing antibodies. Moreover, the antibody response induced by the BPL-inactivated WV vaccine was enhanced when adjuvanted with cytosine phosphoguanine oligodeoxynucleotide (CpG ODN) or AddaVax (MF59-like adjuvant), but not with aluminum hydroxide (alum). Consistent with the antibody response results, the protective effect of the inactivated WV vaccine against the EV-D68 challenge was enhanced when adjuvanted with CpG ODN or AddaVax, but not with alum. Further, while the intranasal inactivated WV vaccine induced EV-D68-specific IgA antibodies in the respiratory tract, it was less protective against EV-D68 challenge than the injectable vaccine. Thus, an injectable inactivated EV-D68 WV vaccine prepared with appropriate viral inactivation reagents and an optimal adjuvant is a promising EV-D68 vaccine.
Collapse
Affiliation(s)
- Kota Senpuku
- Laboratory of Nano-design for Innovative Drug Development, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Vaccine Creation Group, BIKEN Innovative Vaccine Research Alliance Laboratories, Research Institute for Microbial Diseases, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Chikako Kataoka-Nakamura
- The Research Foundation for Microbial Diseases of Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yuta Kunishima
- Vaccine Creation Group, BIKEN Innovative Vaccine Research Alliance Laboratories, Research Institute for Microbial Diseases, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; The Research Foundation for Microbial Diseases of Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Toshiro Hirai
- Laboratory of Nano-design for Innovative Drug Development, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Vaccine Creation Group, BIKEN Innovative Vaccine Research Alliance Laboratories, Research Institute for Microbial Diseases, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Vaccine Creation Group, BIKEN Innovative Vaccine Research Alliance Laboratories, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan; Center for Advanced Modalities and DDS, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yasuo Yoshioka
- Laboratory of Nano-design for Innovative Drug Development, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Vaccine Creation Group, BIKEN Innovative Vaccine Research Alliance Laboratories, Research Institute for Microbial Diseases, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; The Research Foundation for Microbial Diseases of Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan; Vaccine Creation Group, BIKEN Innovative Vaccine Research Alliance Laboratories, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan; Center for Advanced Modalities and DDS, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan; Global Center for Medical Engineering and Informatics, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan; Center for Infectious Disease Education and Research, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| |
Collapse
|
2
|
Dianty R, Hirano J, Anzai I, Kanai Y, Hayashi T, Morimoto M, Kataoka-Nakamura C, Kobayashi S, Uemura K, Ono C, Watanabe T, Kobayashi T, Murakami K, Kikuchi K, Hotta K, Yoshikawa T, Taguwa S, Matsuura Y. Electrolyzed hypochlorous acid water exhibits potent disinfectant activity against various viruses through irreversible protein aggregation. Front Microbiol 2023; 14:1284274. [PMID: 37928667 PMCID: PMC10625411 DOI: 10.3389/fmicb.2023.1284274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 09/25/2023] [Indexed: 11/07/2023] Open
Abstract
It is essential to employ efficient measures to prevent the transmission of pathogenic agents during a pandemic. One such method involves using hypochlorous acid (HClO) solution. The oxidative properties of HClO water (HAW) can contribute to its ability to eliminate viral particles. Here, we examined a highly purified slightly acidic hypochlorous acid water (Hp-SA-HAW) obtained from the reverse osmosis membrane treatment of an electrolytically-generated SA-HAW for its anti-viral activity and mode of action on viral proteins. Hp-SA-HAW exhibited broad-spectrum antiviral effects against various viruses, including adenovirus, hepatitis B virus, Japanese encephalitis virus (JEV), and rotavirus. Additionally, Hp-SA-HAW treatment dose-dependently resulted in irreversibly aggregated multimers of the JEV envelope and capsid proteins. However, Hp-SA-HAW treatment had no discernible effect on viral RNA, indicating that Hp-SA-HAW acts against amino acids rather than nucleic acids. Furthermore, Hp-SA-HAW substantially reduced the infectivity of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), including the ancestral variant and other multiple variants. Hp-SA-HAW treatment induced the aggregation of the SARS-CoV-2 spike and nuclear proteins and disrupted the binding of the purified spike protein of SARS-CoV-2 to human ACE2. This study demonstrates that the broad-spectrum virucidal activity of highly purified HClO is attributed to viral protein aggregation of virion via protein oxidation.
Collapse
Affiliation(s)
- Rahmi Dianty
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Junki Hirano
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Itsuki Anzai
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
- Laboratory of Molecular Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Yuta Kanai
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
- Laboratory of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Tsuyoshi Hayashi
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Masae Morimoto
- Innovative Vaccine Research and Development Center, The Research Foundation for Microbial Diseases of Osaka University, Osaka, Japan
| | - Chikako Kataoka-Nakamura
- Innovative Vaccine Research and Development Center, The Research Foundation for Microbial Diseases of Osaka University, Osaka, Japan
| | - Sakura Kobayashi
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kentaro Uemura
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Chikako Ono
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Tokiko Watanabe
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
- Laboratory of Molecular Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
- Center for Advanced Modalities and DDS, Osaka University, Osaka, Japan
| | - Takeshi Kobayashi
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
- Laboratory of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
- Center for Advanced Modalities and DDS, Osaka University, Osaka, Japan
| | - Kosuke Murakami
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kenji Kikuchi
- Louis Pasteur Center for Medical Research, Kyoto, Japan
| | | | | | - Shuhei Taguwa
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
- Center for Advanced Modalities and DDS, Osaka University, Osaka, Japan
| | - Yoshiharu Matsuura
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
- Center for Advanced Modalities and DDS, Osaka University, Osaka, Japan
| |
Collapse
|
3
|
Kaneko C, Sasaki M, Omori R, Nakao R, Kataoka-Nakamura C, Moonga L, Ndebe J, Muleya W, Simulundu E, Hang’ombe BM, Dautu G, Kajihara M, Mori-Kajihara A, Qiu Y, Ito N, Chambaro HM, Sugimoto C, Higashi H, Takada A, Sawa H, Mweene AS, Isoda N. Immunization Coverage and Antibody Retention against Rabies in Domestic Dogs in Lusaka District, Zambia. Pathogens 2021; 10:738. [PMID: 34208340 PMCID: PMC8231269 DOI: 10.3390/pathogens10060738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 12/25/2022] Open
Abstract
Rabies remains endemic in Zambia. Despite conducting canine vaccinations in Lusaka district, the vaccination coverage and actual seropositivity in the dog population in Lusaka district are rarely evaluated. This study estimated the seropositivity-based immunization coverage in the owned dog population in Lusaka district using the expanded program on immunization cluster survey method. The time-series trend of neutralizing antibodies against rabies in vaccinated dogs was also evaluated. Of 366 dogs in 200 dog-owning households in Lusaka district, blood samples were collected successfully from 251 dogs. In the sampled dogs, 42.2% (106/251) had an antibody titer ≥0.5 IU/mL. When the 115 dogs whose blood was not collected were assumed to be seronegative, the minimum immunization coverage in Lusaka district's owned dog population was estimated at 29.0% (95% confidence interval: 22.4-35.5). It was also found that a single vaccination with certified vaccines is capable of inducing protective levels of antibodies. In contrast, higher antibody titers were observed in multiple-vaccinated dogs than in single-vaccinated dogs, coupled with the observation of a decline in antibody titer over time. These results suggest the importance of continuous booster immunization to maintain herd immunity and provide useful information to plan mass vaccination against rabies in Zambia.
Collapse
Affiliation(s)
- Chiho Kaneko
- Unit of Risk Analysis and Management, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (C.K.); (C.K.-N.)
| | - Michihito Sasaki
- Division of Molecular Pathobiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.S.); (H.M.C.); (H.S.)
| | - Ryosuke Omori
- Division of Bioinformatics, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan;
| | - Ryo Nakao
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, North 18, West 9, Kita-ku, Sapporo 060-0818, Hokkaido, Japan;
| | - Chikako Kataoka-Nakamura
- Unit of Risk Analysis and Management, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (C.K.); (C.K.-N.)
| | - Ladslav Moonga
- Department of Para-Clinical Studies, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (L.M.); (B.M.H.)
| | - Joseph Ndebe
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.N.); (E.S.); (A.T.); (A.S.M.)
| | - Walter Muleya
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia;
| | - Edgar Simulundu
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.N.); (E.S.); (A.T.); (A.S.M.)
- Macha Research Trust, Choma 20100, Zambia
| | - Bernard M. Hang’ombe
- Department of Para-Clinical Studies, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (L.M.); (B.M.H.)
| | - George Dautu
- Virology Unit, Central Veterinary Research Institute, P.O. Box 33980, Lusaka 10101, Zambia;
- Ministry of Fisheries and Livestock, P.O. Box 50060, Lusaka 10101, Zambia
| | - Masahiro Kajihara
- Division of Global Epidemiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.K.); (A.M.-K.)
| | - Akina Mori-Kajihara
- Division of Global Epidemiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.K.); (A.M.-K.)
| | - Yongjin Qiu
- Hokudai Center for Zoonosis Control in Zambia, Hokkaido University International Institute for Zoonosis Control, P.O. Box 32379, Lusaka 10101, Zambia; (Y.Q.); (H.H.)
| | - Naoto Ito
- Laboratory of Zoonotic Diseases, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Gifu Prefecture, Japan;
| | - Herman M. Chambaro
- Division of Molecular Pathobiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.S.); (H.M.C.); (H.S.)
- Virology Unit, Central Veterinary Research Institute, P.O. Box 33980, Lusaka 10101, Zambia;
- Ministry of Fisheries and Livestock, P.O. Box 50060, Lusaka 10101, Zambia
| | - Chihiro Sugimoto
- Division of Collaboration and Education, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan;
| | - Hideaki Higashi
- Hokudai Center for Zoonosis Control in Zambia, Hokkaido University International Institute for Zoonosis Control, P.O. Box 32379, Lusaka 10101, Zambia; (Y.Q.); (H.H.)
- Division of Infection and Immunity, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan
| | - Ayato Takada
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.N.); (E.S.); (A.T.); (A.S.M.)
- Division of Global Epidemiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.K.); (A.M.-K.)
| | - Hirofumi Sawa
- Division of Molecular Pathobiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.S.); (H.M.C.); (H.S.)
| | - Aaron S. Mweene
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.N.); (E.S.); (A.T.); (A.S.M.)
| | - Norikazu Isoda
- Unit of Risk Analysis and Management, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (C.K.); (C.K.-N.)
| |
Collapse
|
4
|
Kaneko C, Omori R, Sasaki M, Kataoka-Nakamura C, Simulundu E, Muleya W, Moonga L, Ndebe J, Hang’ombe BM, Dautu G, Qiu Y, Nakao R, Kajihara M, Mori-Kajihara A, Chambaro HM, Higashi H, Sugimoto C, Sawa H, Mweene AS, Takada A, Isoda N. Domestic dog demographics and estimates of canine vaccination coverage in a rural area of Zambia for the elimination of rabies. PLoS Negl Trop Dis 2021; 15:e0009222. [PMID: 33909621 PMCID: PMC8081203 DOI: 10.1371/journal.pntd.0009222] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 02/07/2021] [Indexed: 12/25/2022] Open
Abstract
Background An estimated 75% or more of the human rabies cases in Africa occur in rural settings, which underscores the importance of rabies control in these areas. Understanding dog demographics can help design strategies for rabies control and plan and conduct canine mass vaccination campaigns effectively in African countries. Methodology/Principal findings A cross-sectional survey was conducted to investigate domestic dog demographics in Kalambabakali, in the rural Mazabuka District of Zambia. The population of ownerless dogs and the total achievable vaccination coverage among the total dog population was estimated using the capture-recapture-based Bayesian model by conducting a canine mass vaccination campaign. This study revealed that 29% of the domestic dog population was under one year old, and 57.7% of those were under three months old and thus were not eligible for the canine rabies vaccination in Zambia. The population growth was estimated at 15% per annum based on the cross-sectional household survey. The population of ownerless dogs was estimated to be small, with an ownerless-to-owned-dog ratio of 0.01–0.06 in the target zones. The achieved overall vaccination coverage from the first mass vaccination was estimated 19.8–51.6%. This low coverage was principally attributed to the owners’ lack of information, unavailability, and dog-handling difficulties. The follow-up mass vaccination campaign achieved an overall coverage of 54.8–76.2%. Conclusions/Significance This paper indicates the potential for controlling canine rabies through mass vaccination in rural Zambia. Rabies education and responsible dog ownership are required to achieve high and sustainable vaccination coverage. Our findings also propose including puppies below three months old in the target population for rabies vaccination and emphasize that securing an annual enforcement of canine mass vaccination that reaches 70% coverage in the dog population is necessary to maintain protective herd immunity. Because dogs are the main transmitter of rabies to humans, controlling rabies in dogs is essential for preventing rabies in humans. Canine vaccination is well-known as the most effective measure for controlling rabies in dogs. Understanding the demographics and dynamics of dog populations is important when designing efficient canine vaccination strategies. Furthermore, protective herd immunity in the total dog population should be attained through the vaccination of owned dogs since ownerless dogs are not usually covered in such campaigns. This study investigated domestic dog demographics and estimated the number of ownerless dogs to finally estimate the vaccination coverage among the overall dog population achievable through a mass vaccination campaign in a rural setting in Mazabuka District, Zambia. The target domestic dog population was young, and population growth was estimated at 15% annually based on the cross-sectional survey. The vaccination coverage attained by providing free canine mass vaccination campaigns was eventually estimated as 54.8–76.2% in the overall dog population, coupled with the estimate that the ownerless dog population was quite small. Our findings emphasize the necessity of conducting annual canine mass vaccinations, including puppies, that target 70% coverage in the dog population to maintain protective herd immunity.
Collapse
Affiliation(s)
- Chiho Kaneko
- Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Ryosuke Omori
- Division of Bioinformatics, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Michihito Sasaki
- Division of Molecular Pathobiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Chikako Kataoka-Nakamura
- Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Edgar Simulundu
- Department of Disease Control, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
- Macha Research Trust, Choma, Zambia
| | - Walter Muleya
- Department of Biomedical Sciences, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
| | - Ladslav Moonga
- Department of Para-Clinical Studies, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
| | - Joseph Ndebe
- Department of Disease Control, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
| | - Bernard M. Hang’ombe
- Department of Para-Clinical Studies, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
| | - George Dautu
- Virology Unit, Central Veterinary Research Institute, Lusaka, Zambia
- Ministry of Fisheries and Livestock, Lusaka, Zambia
| | - Yongjin Qiu
- Hokudai Center for Zoonosis Control in Zambia, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Ryo Nakao
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Masahiro Kajihara
- Division of Global Epidemiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Akina Mori-Kajihara
- Division of Global Epidemiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Herman M. Chambaro
- Division of Molecular Pathobiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
- Virology Unit, Central Veterinary Research Institute, Lusaka, Zambia
- Ministry of Fisheries and Livestock, Lusaka, Zambia
| | - Hideaki Higashi
- Hokudai Center for Zoonosis Control in Zambia, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
- Division of Infection and Immunity, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Chihiro Sugimoto
- Division of Collaboration and Education, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Hirofumi Sawa
- Division of Molecular Pathobiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Aaron S. Mweene
- Department of Disease Control, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
| | - Ayato Takada
- Department of Disease Control, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
- Division of Global Epidemiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Norikazu Isoda
- Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
- * E-mail:
| |
Collapse
|
5
|
Thu MJ, Qiu Y, Kataoka-Nakamura C, Sugimoto C, Katakura K, Isoda N, Nakao R. Isolation of Rickettsia, Rickettsiella, and Spiroplasma from Questing Ticks in Japan Using Arthropod Cells. Vector Borne Zoonotic Dis 2019; 19:474-485. [PMID: 30779681 DOI: 10.1089/vbz.2018.2373] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Ticks are blood-sucking ectoparasites that transmit zoonotic pathogens to humans and animals. Ticks harbor not only pathogenic microorganisms but also endosymbionts. Although some tick endosymbionts are known to be essential for the survival of ticks, their roles in ticks remain poorly understood. The main aim of this study was to isolate and characterize tick-borne microorganisms from field-collected ticks using two arthropod cell lines derived from Ixodes scapularis embryos (ISE6) and Aedes albopictus larvae (C6/36). A total of 170 tick homogenates originating from 15 different tick species collected in Japan were inoculated into each cell line. Bacterial growth was confirmed by PCR amplification of 16S ribosomal DNA (rDNA) of eubacteria. During the 8-week observation period, bacterial isolation was confirmed in 14 and 4 samples using ISE6 and C6/36 cells, respectively. The sequencing analysis of the 16S rDNA PCR products indicated that they were previously known tick-borne pathogens/endosymbionts in three different genera: Rickettsia, Rickettsiella, and Spiroplasma. These included four previously validated rickettsial species namely Rickettsia asiatica (n = 2), Rickettsia helvetica (n = 3), Rickettsia monacensis (n = 2), and Rickettsia tamurae (n = 3) and one uncharacterized genotype Rickettsia sp. LON (n = 2). Four isolates of Spiroplasma had the highest similarity with previously reported Spiroplasma isolates: Spiroplasma ixodetis obtained from ticks in North America and Spiroplasma sp. Bratislava 1 obtained from Ixodes ricinus in Europe, while two isolates of Rickettsiella showed 100% identity with Rickettsiella sp. detected from Ixodes uriae at Grimsey Island in Iceland. To the best of our knowledge, this is the first report on successful isolation of Rickettsiella from ticks. The isolates obtained in this study can be further analyzed to evaluate their pathogenic potential in animals and their roles as symbionts in ticks.
Collapse
Affiliation(s)
- May June Thu
- 1 Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Japan.,2 Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan
| | - Yongjin Qiu
- 3 Hokudai Center for Zoonosis Control in Zambia, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Chikako Kataoka-Nakamura
- 2 Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan.,4 Surveillance Section, Biomedical Science Center, Seto Center, Kanonji Institute, The Research Foundation for Microbial Diseases of Osaka University, Kagawa, Japan
| | - Chihiro Sugimoto
- 5 Division of Collaboration and Education, Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan.,6 Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
| | - Ken Katakura
- 1 Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Japan
| | - Norikazu Isoda
- 2 Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan.,6 Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
| | - Ryo Nakao
- 1 Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Japan
| |
Collapse
|