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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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