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Mouwenda YD, Betouke Ongwe ME, Sonnet F, Stam KA, Labuda LA, De Vries S, Grobusch MP, Zinsou FJ, Honkpehedji YJ, Dejon Agobe JC, Diemert DJ, van Leeuwen R, Bottazzi ME, Hotez PJ, Kremsner PG, Bethony JM, Jochems SP, Adegnika AA, Massinga Loembe M, Yazdanbakhsh M. Characterization of T cell responses to co-administered hookworm vaccine candidates Na-GST-1 and Na-APR-1 in healthy adults in Gabon. PLoS Negl Trop Dis 2021; 15:e0009732. [PMID: 34597297 PMCID: PMC8486127 DOI: 10.1371/journal.pntd.0009732] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/14/2021] [Indexed: 12/23/2022] Open
Abstract
Two hookworm vaccine candidates, Na-GST-1 and Na-APR-1, formulated with Glucopyranosyl Lipid A (GLA-AF) adjuvant, have been shown to be safe, well tolerated, and to induce antibody responses in a Phase 1 clinical trial (Clinicaltrials.gov NCT02126462) conducted in Gabon. Here, we characterized T cell responses in 24 Gabonese volunteers randomized to get vaccinated three times with Na-GST-1 and Na-APR-1 at doses of 30μg (n = 8) or 100μg (n = 10) and as control Hepatitis B (n = 6). Blood was collected pre- and post-vaccination on days 0, 28, and 180 as well as 2-weeks after each vaccine dose on days 14, 42, and 194 for PBMCs isolation. PBMCs were stimulated with recombinant Na-GST-1 or Na-APR-1, before (days 0, 28 and 180) and two weeks after (days 14, 42 and 194) each vaccination and used to characterize T cell responses by flow and mass cytometry. A significant increase in Na-GST-1 -specific CD4+ T cells producing IL-2 and TNF, correlated with specific IgG antibody levels, after the third vaccination (day 194) was observed. In contrast, no increase in Na-APR-1 specific T cell responses were induced by the vaccine. Mass cytometry revealed that, Na-GST-1 cytokine producing CD4+ T cells were CD161+ memory cells expressing CTLA-4 and CD40-L. Blocking CTLA-4 enhanced the cytokine response to Na-GST-1. In Gabonese volunteers, hookworm vaccine candidate, Na-GST-1, induces detectable CD4+ T cell responses that correlate with specific antibody levels. As these CD4+ T cells express CTLA-4, and blocking this inhibitory molecules resulted in enhanced cytokine production, the question arises whether this pathway can be targeted to enhance vaccine immunogenicity. Two hookworm vaccine candidate (Na-GST-1 and Na-APR-1) have been tested in Gabonese and found to be safe and to induce antibody response. We aimed to study the cellular immune responses among vaccinated and unvaccinated volunteers. We found that Na-GST-1 induced CD4+ T cell responses (IL-2, TNF) among the vaccinated volunteers that received the high vaccine dose (100 ug). Furthermore Na-GST-1 specific memory T cells were found to express the inhibitory molecule CTLA-4. These responses was not observed in those who received the low dose of the Na-GST-1 vaccine, or those who received Na-APR-1 or HBV. By blocking CTLA-4, we observed an increase in TNF production. Our data suggest that an intervention involving blockage of the CTLA-4 molecule in the vaccinated could be beneficial in endemic settings where vaccine responses have been shown to be lower compared to non-endemic settings.
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Affiliation(s)
- Yoanne D. Mouwenda
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Department of Parasitology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
- * E-mail:
| | - Madeleine E. Betouke Ongwe
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Department of Parasitology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
- Centre National de la Recherche Scientifique et Technologique (IRET- CENAREST), Libreville, Gabon
| | - Friederike Sonnet
- Department of Parasitology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
| | - Koen A. Stam
- Department of Parasitology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
| | - Lucja A. Labuda
- Department of Parasitology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
| | - Sophie De Vries
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Amsterdam University Medical Center, (AMC), University of Amsterdam, Amsterdam, the Netherlands
| | - Martin P. Grobusch
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Amsterdam University Medical Center, (AMC), University of Amsterdam, Amsterdam, the Netherlands
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Frejus J. Zinsou
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Yabo J. Honkpehedji
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Jean-Claude Dejon Agobe
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Amsterdam University Medical Center, (AMC), University of Amsterdam, Amsterdam, the Netherlands
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - David J. Diemert
- Department of Microbiology, Immunology and Tropical Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, District of Columbia, United States of America
| | - Remko van Leeuwen
- Amsterdam Institute for Global Development (AIGHD), Amsterdam, The Netherlands
| | - Maria E. Bottazzi
- Texas Children’s Hospital Center for Vaccine Development, Departments of Pediatrics and Molecular Virology and Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Peter J. Hotez
- Texas Children’s Hospital Center for Vaccine Development, Departments of Pediatrics and Molecular Virology and Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Peter G. Kremsner
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
- German Center for Infection Research, Tübingen, Germany
| | - Jeffrey M. Bethony
- Department of Microbiology, Immunology and Tropical Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, District of Columbia, United States of America
| | - Simon P. Jochems
- Department of Parasitology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
| | - Ayola A. Adegnika
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Department of Parasitology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
- German Center for Infection Research, Tübingen, Germany
| | | | - Maria Yazdanbakhsh
- Department of Parasitology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
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Labuda LA, Adegnika AA, Rosa BA, Martin J, Ateba-Ngoa U, Amoah AS, Lima HM, Meurs L, Mbow M, Manurung MD, Zinsou JF, Smits HH, Kremsner PG, Mitreva M, Yazdanbakhsh M. A Praziquantel Treatment Study of Immune and Transcriptome Profiles in Schistosoma haematobium-Infected Gabonese Schoolchildren. J Infect Dis 2021; 222:2103-2113. [PMID: 31844885 PMCID: PMC7661769 DOI: 10.1093/infdis/jiz641] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 12/15/2019] [Indexed: 12/13/2022] Open
Abstract
Background Although Schistosoma haematobium infection has been reported to be associated with alterations in immune function, in particular immune hyporesponsiveness, there have been only few studies that have used the approach of removing infection by drug treatment to establish this and to understand the underlying molecular mechanisms. Methods Schistosoma haematobium-infected schoolchildren were studied before and after praziquantel treatment and compared with uninfected controls. Cellular responses were characterized by cytokine production and flow cytometry, and in a subset of children RNA sequencing (RNA-Seq) transcriptome profiling was performed. Results Removal of S haematobium infection resulted in increased schistosome-specific cytokine responses that were negatively associated with CD4+CD25+FOXP3+ T-cells and accompanied by increased frequency of effector memory T-cells. Innate responses to Toll like receptor (TLR) ligation decreased with treatment and showed positive association with CD4+CD25+FOXP3+ T-cells. At the transcriptome level, schistosome infection was associated with enrichment in cell adhesion, whereas parasite removal was associated with a more quiescent profile. Further analysis indicated that alteration in cellular energy metabolism was associated with S haematobium infection and that the early growth response genes 2 and 3 (EGR 2 and EGR3), transcription factors that negatively regulate T-cell activation, may play a role in adaptive immune hyporesponsiveness. Conclusions Using a longitudinal study design, we found contrasting effects of schistosome infection on innate and adaptive immune responses. Whereas the innate immune system appears more activated, the adaptive immunity is in a hyporesponsive state reflected in alterations in CD4+CD25+FOXP3+ T-cells, cellular metabolism, and transcription factors involved in anergy.
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Affiliation(s)
- Lucja A Labuda
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands.,Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon.,Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Ayola A Adegnika
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands.,Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon.,Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Bruce A Rosa
- McDonnell Genome Institute, Washington University in St. Louis, St. Louis, Missouri, USA
| | - John Martin
- McDonnell Genome Institute, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Ulysse Ateba-Ngoa
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands.,Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon.,Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Abena Serwaa Amoah
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands.,Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
| | - Honorine Mbenkep Lima
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands.,Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon.,Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Lynn Meurs
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Moustapha Mbow
- Service d'Immunologie du Département de Pharmacie, FMPO, Université Cheikh Anta Diop, Fann- Dakar, Sénégal
| | - Mikhael D Manurung
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jeannot F Zinsou
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
| | - Hermelijn H Smits
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
| | - Peter G Kremsner
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon.,Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Makedonka Mitreva
- McDonnell Genome Institute, Washington University in St. Louis, St. Louis, Missouri, USA.,Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Maria Yazdanbakhsh
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
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3
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Egesa M, Lubyayi L, Tukahebwa EM, Bagaya BS, Chalmers IW, Wilson S, Hokke CH, Hoffmann KF, Dunne DW, Yazdanbakhsh M, Labuda LA, Cose S. Schistosoma mansoni schistosomula antigens induce Th1/Pro-inflammatory cytokine responses. Parasite Immunol 2018; 40:e12592. [PMID: 30239006 PMCID: PMC6492251 DOI: 10.1111/pim.12592] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/15/2018] [Accepted: 09/04/2018] [Indexed: 12/16/2022]
Abstract
Larvae of Schistosoma (schistosomula) are highly susceptible to host immune responses and are attractive prophylactic vaccine targets, although cellular immune responses against schistosomula antigens in endemic human populations are not well characterized. We collected blood and stool from 54 Schistosoma mansoni-infected Ugandans, isolated peripheral blood mononuclear cells and stimulated them for 24 hours with schistosome adult worm and soluble egg antigens (AWA and SEA), along with schistosomula recombinant proteins rSmKK7, Lymphocyte Antigen 6 isoforms (rSmLy6A and rSmLy6B), tetraspanin isoforms (rSmTSP6 and rSmTSP7). Cytokines, chemokines and growth factors were measured in the culture supernatants using a multiplex luminex assay, and infection intensity was determined before and at 1 year after praziquantel (PZQ) treatment using the Kato-Katz method. Cellular responses were grouped and the relationship between groups of correlated cellular responses and infection intensity before and after PZQ treatment was investigated. AWA and SEA induced mainly Th2 responses. In contrast, rSmLy6B, rSmTSP6 and rSmTSP7 induced Th1/pro-inflammatory responses. While recombinant antigens rSmKK7 and rSmLy6A did not induce a Th1/pro-inflammatory response, they had an association with pre-treatment infection intensity after adjusting for age and sex. Testing more schistosomula antigens using this approach could provide immune-epidemiology identifiers necessary for prioritizing next generation schistosomiasis vaccine candidates.
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Affiliation(s)
- Moses Egesa
- Department of Medical MicrobiologySchool of Biomedical SciencesMakerere University College of Health SciencesKampalaUganda
- Medical Research Council/Uganda Virus Research Institute and London School of Hygiene & Tropical Medicine Uganda Research UnitEntebbeUganda
| | - Lawrence Lubyayi
- Medical Research Council/Uganda Virus Research Institute and London School of Hygiene & Tropical Medicine Uganda Research UnitEntebbeUganda
| | | | - Bernard S. Bagaya
- Department of Immunology and Molecular BiologySchool of Biomedical SciencesMakerere University College of Health SciencesKampalaUganda
| | - Iain W. Chalmers
- Institute of Biological, Environmental & Rural SciencesAberystwyth UniversityAberystwythUK
| | - Shona Wilson
- Department of PathologyUniversity of CambridgeCambridgeUK
| | - Cornelis H. Hokke
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | - Karl F. Hoffmann
- Institute of Biological, Environmental & Rural SciencesAberystwyth UniversityAberystwythUK
| | - David W. Dunne
- Department of PathologyUniversity of CambridgeCambridgeUK
| | - Maria Yazdanbakhsh
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | - Lucja A. Labuda
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | - Stephen Cose
- Medical Research Council/Uganda Virus Research Institute and London School of Hygiene & Tropical Medicine Uganda Research UnitEntebbeUganda
- Department of Clinical ResearchLondon School of Hygiene & Tropical MedicineLondonUK
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4
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Staal SL, Hogendoorn SKL, Voets SA, Tepper RC, Veenstra M, de Vos II, van Son KC, Gool JK, Paramitha AC, Aristyo K, Wildan A, Pratiwi C, van Ree R, Yazdanbakhsh M, Supali T, Djuardi Y, Labuda LA, Tahapary DL, Sartono E. Prevalence of Atopy following Mass Drug Administration with Albendazole: A Study in School Children on Flores Island, Indonesia. Int Arch Allergy Immunol 2018; 177:192-198. [PMID: 30130756 DOI: 10.1159/000490952] [Citation(s) in RCA: 11] [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] [Received: 03/30/2018] [Accepted: 06/16/2018] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND In many rural areas of tropical countries such as Indonesia, the prevalence of soil-transmitted helminths (STH) infections remains high. At the same time, the burden of allergic disorders in such rural areas is reported to be low and inversely associated with helminth infections. To reduce the morbidity and transmission of helminth infections, the world health organization recommends preventive treatment of school children by providing mass drug administration (MDA) with albendazole. Here, we had an opportunity to evaluate the prevalence of skin reactivity to allergens before and after albendazole treatment to get an indication of the possible impact of MDA on allergic sensitization. METHODS A study was conducted among 150 school children living in an area endemic for STH infections. Before and 1 year after anthelminthic treatment with albendazole, stool samples were examined for the presence of STH eggs, skin prick tests (SPT) for cockroach and house dust mites were performed, blood eosinophilia was assessed, and total immunoglobulin E (IgE) and C-reactive protein (CRP) were measured in plasma. RESULTS Anthelminthic treatment significantly reduced the prevalence of STH from 19.6 before treatment to 6% after treatment (p < 0.001). Levels of total IgE (estimate: 0.30; 95% CI 0.22-0.42, p < 0.0001), CRP (estimate: 0.60; 95% CI 0.42-0.86, p = 0.006), and eosinophil counts (estimate: 0.70; 95% CI 0.61-0.80, p < 0.001) decreased significantly. The prevalence of SPT positivity increased from 18.7 to 32.7%. Multivariate analysis adjusted for confounding factors showed an increased risk of being SPT positive to any allergen (OR 3.04; 95% CI 1.338-6.919, p = 0.008). CONCLUSIONS This study indicates that 1 year of MDA with albendazole was associated with a reduced prevalence of STH infections. This study shows that the prevalence of allergic sensitization increases after 1 year of albendazole treatment. Placebo-controlled and larger studies are needed to further substantiate a role of deworming treatment in an increased risk of allergic sensitization.
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Affiliation(s)
- Steven L Staal
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Sarika K L Hogendoorn
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Sophie A Voets
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Rebecca C Tepper
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Mirte Veenstra
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Ivo I de Vos
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Koen C van Son
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Jari K Gool
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Antonia C Paramitha
- Department of Parasitology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Kevin Aristyo
- Department of Parasitology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Ardy Wildan
- Department of Parasitology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Chici Pratiwi
- Department of Parasitology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Ronald van Ree
- Departments of Experimental Immunology and Otorhinolaryngology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Maria Yazdanbakhsh
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Taniawati Supali
- Department of Parasitology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Yenny Djuardi
- Department of Parasitology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Lucja A Labuda
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Dicky L Tahapary
- Division of Endocrinology, Department of Internal Medicine, Dr. Cipto Mangunkusumo National General Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Erliyani Sartono
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
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5
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van der Vlugt LEPM, Mlejnek E, Ozir-Fazalalikhan A, Janssen Bonas M, Dijksman TR, Labuda LA, Schot R, Guigas B, Möller GM, Hiemstra PS, Yazdanbakhsh M, Smits HH. CD24(hi)CD27(+) B cells from patients with allergic asthma have impaired regulatory activity in response to lipopolysaccharide. Clin Exp Allergy 2014; 44:517-28. [PMID: 24261983 DOI: 10.1111/cea.12238] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 10/02/2013] [Accepted: 11/15/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND Regulatory B cells have been identified that strongly reduce allergic and auto-immune inflammation in experimental models by producing IL-10. Recently, several human regulatory B-cell subsets with an impaired function in auto-immunity have been described, but there is no information on regulatory B cells in allergic asthma. OBJECTIVE In this study, the frequency and function of IL-10 producing B-cell subsets in allergic asthma were investigated. METHODS Isolated peripheral blood B cells from 13 patients with allergic asthma and matched healthy controls were analyzed for the expression of different regulatory B-cell markers. Next, the B cells were activated by lipopolysaccharide (LPS), CpG or through the B-cell receptor, followed by co-culture with endogenous memory CD4(+) T cells and house dust mite allergen DerP1. RESULTS Lower number of IL-10 producing B cells were found in patients in response to LPS, however, this was not the case when B cells were activated through the B-cell receptor or by CpG. Further dissection showed that only the CD24(hi)CD27(+) B-cell subset was reduced in number and IL-10 production to LPS. In response to DerP1, CD4(+) T cells from patients co-cultured with LPS-primed total B cells produced less IL-10 compared to similar cultures from controls. These results are in line with the finding that sorted CD24(hi)CD27(+) B cells are responsible for the induction of IL-10(+) CD4(+) T cells. CONCLUSIONS Taken together, these data indicate that CD24(hi)CD27(+) B cells from allergic asthma patients produce less IL-10 in response to LPS leading to a weaker IL-10 induction in T cells in response to DerP1, which may play a role in allergic asthma.
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Affiliation(s)
- L E P M van der Vlugt
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
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Meurs L, Mbow M, Boon N, Vereecken K, Amoah AS, Labuda LA, Dièye TN, Mboup S, Yazdanbakhsh M, Polman K. Cytokine responses to Schistosoma mansoni and Schistosoma haematobium in relation to infection in a co-endemic focus in northern Senegal. PLoS Negl Trop Dis 2014; 8:e3080. [PMID: 25101661 PMCID: PMC4125161 DOI: 10.1371/journal.pntd.0003080] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 10/25/2013] [Accepted: 06/27/2014] [Indexed: 11/20/2022] Open
Abstract
Background In Africa, many areas are co-endemic for the two major Schistosoma species, S. mansoni and S. haematobium. Epidemiological studies have suggested that host immunological factors may play an important role in co-endemic areas. As yet, little is known about differences in host immune responses and possible immunological interactions between S. mansoni and S. haematobium in humans. The aim of this study was to analyze host cytokine responses to antigens from either species in a population from a co-endemic focus, and relate these to S. mansoni and S. haematobium infection. Methodology Whole blood cytokine responses were investigated in a population in the north of Senegal (n = 200). Blood was stimulated for 72 h with schistosomal egg and adult worm antigens of either Schistosoma species. IL-10, IL-5, IFN-γ, TNF-α, and IL-2 production was determined in culture supernatants. A multivariate (i.e. multi-response) approach was used to allow a joint analysis of all cytokines in relation to Schistosoma infection. Principal Findings Schistosoma haematobium egg and worm antigens induced higher cytokine production, suggesting that S. haematobium may be more immunogenic than S. mansoni. However, both infections were strongly associated with similar, modified Th2 cytokine profiles. Conclusions/Significance This study is the first to compare S. mansoni and S. haematobium cytokine responses in one population residing in a co-endemic area. These findings are in line with previous epidemiological studies that also suggested S. haematobium egg and worm stages to be more immunogenic than those of S. mansoni. In the developing world, over 207 million people are infected with blood-dwelling parasitic Schistosoma worms. Schistosoma haematobium and S. mansoni are the most widespread species. In Africa, they often occur together in the same area, with many people carrying both species. Yet, little is known about the differences in immune response that the human host develops against these two species. It is also unknown whether the presence of one species may affect the immune response to the other. We here investigated 200 people from an area in the north of Senegal where both species occur. They were examined for Schistosoma infections, as well as for immune responses to the two species. We observed that both infections were characterized by very similar cytokine responses. However, S. haematobium antigens induced higher levels of cytokines than S. mansoni. This suggests that S. haematobium may give rise to stronger immune responses, and may help to explain differences between the two most important Schistosoma species regarding the occurrence of infection and morbidity.
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Affiliation(s)
- Lynn Meurs
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
- * E-mail:
| | - Moustapha Mbow
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
- Laboratory of Bacteriology and Virology, Aristide Le Dantec Teaching Hospital, Dakar, Senegal
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
| | - Nele Boon
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
- Laboratory of Biodiversity and Evolutionary Genomics, University of Leuven, Leuven, Belgium
| | - Kim Vereecken
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Abena Serwaa Amoah
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
| | - Lucja A. Labuda
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | - Tandakha Ndiaye Dièye
- Laboratory of Bacteriology and Virology, Aristide Le Dantec Teaching Hospital, Dakar, Senegal
| | - Souleymane Mboup
- Laboratory of Bacteriology and Virology, Aristide Le Dantec Teaching Hospital, Dakar, Senegal
| | - Maria Yazdanbakhsh
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
| | - Katja Polman
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
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Labuda LA, de Jong SE, Meurs L, Amoah AS, Mbow M, Ateba-Ngoa U, van der Ham AJ, Knulst AC, Yazdanbakhsh M, Adegnika AA. Differences in innate cytokine responses between European and African children. PLoS One 2014; 9:e95241. [PMID: 24743542 PMCID: PMC3990610 DOI: 10.1371/journal.pone.0095241] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [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: 01/24/2014] [Accepted: 03/24/2014] [Indexed: 01/22/2023] Open
Abstract
Although differences in immunological responses between populations have been found in terms of vaccine efficacy, immune responses to infections and prevalence of chronic inflammatory diseases, the mechanisms responsible for these differences are not well understood. Therefore, innate cytokine responses mediated by various classes of pattern-recognition receptors including Toll-like receptors (TLR), C-type lectin receptors (CLRs) and nucleotide-binding oligomerisation domain-like receptors (NLRs) were compared between Dutch (European), semi-urban and rural Gabonese (African) children. Whole blood was stimulated for 24 hours and the pro-inflammatory tumor necrosis factor (TNF) and the anti-inflammatory/regulatory interleukin-10 (IL-10) cytokines in culture supernatant were measured by enzyme-linked immunosorbent assay (ELISA). Gabonese children had a lower pro-inflammatory response to poly(I:C) (TLR3 ligand), but a higher pro-inflammatory response to FSL-1 (TLR2/6 ligand), Pam3 (TLR2/1 ligand) and LPS (TLR4 ligand) compared to Dutch children. Anti-inflammatory responses to Pam3 were also higher in Gabonese children. Non-TLR ligands did not induce substantial cytokine production on their own. Interaction between various TLR and non-TLR receptors was further assessed, but no differences were found between the three populations. In conclusion, using a field applicable assay, significant differences were observed in cytokine responses between European and African children to TLR ligands, but not to non-TLR ligands.
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Affiliation(s)
- Lucja A. Labuda
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Sanne E. de Jong
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
| | - Lynn Meurs
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Abena S. Amoah
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
| | - Moustapha Mbow
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
- Immunology Department of the Laboratory of Bacteriology and Virology of Aristide Le Dantec University Hospital, Dakar, Senegal
| | - Ulysse Ateba-Ngoa
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Alwin J. van der Ham
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
| | - André C. Knulst
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Maria Yazdanbakhsh
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
| | - Ayola A. Adegnika
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
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Labuda LA, Ateba-Ngoa U, Feugap EN, Heeringa JJ, van der Vlugt LEPM, Pires RBA, Mewono L, Kremsner PG, van Zelm MC, Adegnika AA, Yazdanbakhsh M, Smits HH. Alterations in peripheral blood B cell subsets and dynamics of B cell responses during human schistosomiasis. PLoS Negl Trop Dis 2013; 7:e2094. [PMID: 23505586 PMCID: PMC3591311 DOI: 10.1371/journal.pntd.0002094] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [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: 06/29/2012] [Accepted: 01/23/2013] [Indexed: 11/19/2022] Open
Abstract
Antibody responses are thought to play an important role in control of Schistosoma infections, yet little is known about the phenotype and function of B cells in human schistosomiasis. We set out to characterize B cell subsets and B cell responses to B cell receptor and Toll-like receptor 9 stimulation in Gabonese schoolchildren with Schistosoma haematobium infection. Frequencies of memory B cell (MBC) subsets were increased, whereas naive B cell frequencies were reduced in the schistosome-infected group. At the functional level, isolated B cells from schistosome-infected children showed higher expression of the activation marker CD23 upon stimulation, but lower proliferation and TNF-α production. Importantly, 6-months after 3 rounds of praziquantel treatment, frequencies of naive B cells were increased, MBC frequencies were decreased and with the exception of TNF-α production, B cell responsiveness was restored to what was seen in uninfected children. These data show that S. haematobium infection leads to significant changes in the B cell compartment, both at the phenotypic and functional level. Schistosomiasis affects over 200 million people and especially children in developing countries. It causes general hyporesponsiveness of the immune system, which until now has predominantly been described for various T cell subsets as well as dendritic cells. B cells in this context have not yet been investigated. To address this question, we phenotyped B cell subsets present in peripheral blood from S. haematobium infected and uninfected schoolchildren living in an endemic area in Lambaréné, Gabon. Children with schistosomiasis had an increased frequency of various memory B cell subsets, including subsets associated with B cell exhaustion, and a concomitant decrease in naive B cells. To study the effect of Schistosoma infection on B cells in more detail we isolated peripheral blood B cells and found that B cells from infected children had a reduced capacity to proliferate and produce TNF-α in response to both B cell receptor and Toll-like receptor stimulation. These results provide new insights into the role of B cells in the host immune response to schistosomiasis and may provide a novel target for therapeutic strategies.
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Affiliation(s)
- Lucja A. Labuda
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | - Ulysse Ateba-Ngoa
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | - Eliane Ngoune Feugap
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | - Jorn J. Heeringa
- Department of Immunology, Erasmus MC, Rotterdam, The Netherlands
| | | | - Regina B. A. Pires
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | - Ludovic Mewono
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
| | - Peter G. Kremsner
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | | | - Ayola A. Adegnika
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | - Maria Yazdanbakhsh
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
| | - Hermelijn H. Smits
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- * E-mail:
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Mbow M, Larkin BM, Meurs L, Wammes LJ, de Jong SE, Labuda LA, Camara M, Smits HH, Polman K, Dieye TN, Mboup S, Stadecker MJ, Yazdanbakhsh M. T-helper 17 cells are associated with pathology in human schistosomiasis. J Infect Dis 2012; 207:186-95. [PMID: 23087431 DOI: 10.1093/infdis/jis654] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Schistosome infections are often clinically silent, but some individuals develop severe pathological reactions. In several disease processes, T-helper 17 (Th17) cells have been linked to tissue injuries, while regulatory T cells (Tregs) are thought to downmodulate inflammatory reactions. We assessed whether bladder pathology in human Schistosoma haematobium infection is related to the balance of Th17 cells and Tregs. We used a murine model of Schistosoma mansoni infection to further investigate whether the peripheral profiles reflected ongoing events in tissues. METHODS We characterized T-helper cell subsets in the peripheral blood of children residing in a S. haematobium-endemic area and in the peripheral blood, spleen, and hepatic granulomas of S. mansoni-infected high-pathology CBA mice and low-pathology C57BL/6 mice. RESULTS S. haematobium-infected children with bladder pathology had a significantly higher percentage of Th17 cells than those without pathology. Moreover, the Th17/Treg ratios were significantly higher in infected children with pathology, compared with infected children without pathology. Percentages of interleukin 17-producing cells were significantly higher in spleen and granulomas of CBA mice, compared with C57BL/6 mice. This difference was also reflected in the peripheral blood. CONCLUSIONS This is the first study to indicate that Th17 cells may be involved in the pathogenesis of human schistosomiasis.
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Affiliation(s)
- Moustapha Mbow
- Immunology Unit, Laboratory of Bacteriology and Virology, Aristide Le Dantec Teaching Hospital, Dakar, Senegal.
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