Naturally-acquired immune response against Plasmodium vivax rhoptry-associated membrane antigen
© 2016 Changrob et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Rhoptry-associated membrane antigen (RAMA...
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th-mahidol.419592019-03-14T15:02:59Z Naturally-acquired immune response against Plasmodium vivax rhoptry-associated membrane antigen Siriruk Changrob Bo Wang Jin Hee Han Seong Kyun Lee Myat Htut Nyunt Chae Seung Lim Takafumi Tsuboi Patchanee Chootong Eun Taek Han Mahidol University Kangwon National University Anhui Medical University Department of Medical Research Korea University Ehime University Agricultural and Biological Sciences Biochemistry, Genetics and Molecular Biology © 2016 Changrob et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Rhoptry-associated membrane antigen (RAMA) is an abundant glycophosphatidylinositol (GPI)-anchored protein that is embedded within the lipid bilayer and is implicated in parasite invasion. Antibody responses against rhoptry proteins are produced by individuals living in a malaria-endemic area, suggesting the immunogenicity of Plasmodium vivax RAMA (PvRAMA) for induction of immune responses during P. vivax infection. To determine whether PvRAMA contributes to the acquisition of immunity to malaria and could be a rational candidate for a vaccine, the presence of memory T cells and the stability of the antibody response against PvRAMA were evaluated in P. vivax-exposed individuals. The immunogenicity of PvRAMA for the induction of T cell responses was evaluated by in vitro stimulation of peripheral blood mononuclear cells (PBMCs). High levels of interferon (IFN)-γ and interleukin (IL)-10 cytokines were detected in the culture supernatant of PBMCs, and the CD4+ T cells predominantly produced IL-10 cytokine. The levels of total anti-PvRAMA immunoglobulin G (IgG) antibody were significantly elevated, and these antibodies persisted over the 12 months of the study. Interestingly, IgG1, IgG2 and IgG3 were the major antibody subtypes in the response to PvRAMA. The frequency of IgG3 in specific to PvRAMA antigen maintained over 12 months. These data could explain the immunogenicity of PvRAMA antigen in induction of both cell-mediated and antibody-mediated immunity in natural P. vivax infection, in which IFN-γ helps antibody class switching toward the IgG1, IgG2 and IgG3 isotypes and IL-10 supports PvRAMA-specific antibody production. 2018-12-11T02:02:04Z 2019-03-14T08:02:59Z 2018-12-11T02:02:04Z 2019-03-14T08:02:59Z 2016-02-01 Article PLoS ONE. Vol.11, No.2 (2016) 10.1371/journal.pone.0148723 19326203 2-s2.0-84960396505 https://repository.li.mahidol.ac.th/handle/123456789/41959 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84960396505&origin=inward |
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Agricultural and Biological Sciences Biochemistry, Genetics and Molecular Biology Siriruk Changrob Bo Wang Jin Hee Han Seong Kyun Lee Myat Htut Nyunt Chae Seung Lim Takafumi Tsuboi Patchanee Chootong Eun Taek Han Naturally-acquired immune response against Plasmodium vivax rhoptry-associated membrane antigen |
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© 2016 Changrob et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Rhoptry-associated membrane antigen (RAMA) is an abundant glycophosphatidylinositol (GPI)-anchored protein that is embedded within the lipid bilayer and is implicated in parasite invasion. Antibody responses against rhoptry proteins are produced by individuals living in a malaria-endemic area, suggesting the immunogenicity of Plasmodium vivax RAMA (PvRAMA) for induction of immune responses during P. vivax infection. To determine whether PvRAMA contributes to the acquisition of immunity to malaria and could be a rational candidate for a vaccine, the presence of memory T cells and the stability of the antibody response against PvRAMA were evaluated in P. vivax-exposed individuals. The immunogenicity of PvRAMA for the induction of T cell responses was evaluated by in vitro stimulation of peripheral blood mononuclear cells (PBMCs). High levels of interferon (IFN)-γ and interleukin (IL)-10 cytokines were detected in the culture supernatant of PBMCs, and the CD4+ T cells predominantly produced IL-10 cytokine. The levels of total anti-PvRAMA immunoglobulin G (IgG) antibody were significantly elevated, and these antibodies persisted over the 12 months of the study. Interestingly, IgG1, IgG2 and IgG3 were the major antibody subtypes in the response to PvRAMA. The frequency of IgG3 in specific to PvRAMA antigen maintained over 12 months. These data could explain the immunogenicity of PvRAMA antigen in induction of both cell-mediated and antibody-mediated immunity in natural P. vivax infection, in which IFN-γ helps antibody class switching toward the IgG1, IgG2 and IgG3 isotypes and IL-10 supports PvRAMA-specific antibody production. |
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Mahidol University |
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Mahidol University Siriruk Changrob Bo Wang Jin Hee Han Seong Kyun Lee Myat Htut Nyunt Chae Seung Lim Takafumi Tsuboi Patchanee Chootong Eun Taek Han |
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Article |
author |
Siriruk Changrob Bo Wang Jin Hee Han Seong Kyun Lee Myat Htut Nyunt Chae Seung Lim Takafumi Tsuboi Patchanee Chootong Eun Taek Han |
author_sort |
Siriruk Changrob |
title |
Naturally-acquired immune response against Plasmodium vivax rhoptry-associated membrane antigen |
title_short |
Naturally-acquired immune response against Plasmodium vivax rhoptry-associated membrane antigen |
title_full |
Naturally-acquired immune response against Plasmodium vivax rhoptry-associated membrane antigen |
title_fullStr |
Naturally-acquired immune response against Plasmodium vivax rhoptry-associated membrane antigen |
title_full_unstemmed |
Naturally-acquired immune response against Plasmodium vivax rhoptry-associated membrane antigen |
title_sort |
naturally-acquired immune response against plasmodium vivax rhoptry-associated membrane antigen |
publishDate |
2018 |
url |
https://repository.li.mahidol.ac.th/handle/123456789/41959 |
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1763490420889747456 |