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O'Neal KA, Zeltner SL, Foscue CL, Stumhofer JS. Bhlhe40 limits early IL-10 production from CD4 + T cells during Plasmodium yoelii 17X infection. Infect Immun 2023; 91:e0036723. [PMID: 37843306 PMCID: PMC10652903 DOI: 10.1128/iai.00367-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 09/15/2023] [Indexed: 10/17/2023] Open
Abstract
The cytokine IL-10 suppresses T-cell-mediated immunity, which is required to control infection with Plasmodium yoelii. Consequently, IL-10 can delay the time needed to resolve this infection, leading to a higher parasite burden. While the pathways that lead to IL-10 production by CD4+ T cells are well defined, much less is known about the mediators that suppress the expression of this potent anti-inflammatory cytokine. Here, we show that the transcription factor basic helix-loop-helix family member e40 (Bhlhe40) contributes to controlling parasite burden in response to P. yoelii infection in mice. Loss of Bhlhe40 expression in mice results in higher Il10 expression, higher peak parasitemia, and a delay in parasite clearance. The observed phenotype was not due to defects in T-cell activation and proliferation or the humoral response. Nor was it due to changes in regulatory T-cell numbers. However, blocking IL-10 signaling reversed the outcome in Bhlhe40-/ - mice, suggesting that excess IL-10 production limits their ability to control the infection properly. In addition to suppressing Il10 expression in CD4+ T cells, Bhlhe40 can promote Ifng expression. Indeed, IFN-γ production by CD4+ T cells isolated from the liver was significantly affected by the loss of Bhlhe40. Lastly, Bhlhe40 deletion in T cells resulted in a phenotype similar to that observed in the Bhlhe40-/ - mice, indicating that Bhlhe40 expression in T cells contributes to the ability of mice to control infection with P. yoelii.
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Affiliation(s)
- Kara A. O'Neal
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Sheldon L. Zeltner
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Camille L. Foscue
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Jason S. Stumhofer
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
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2
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Chen X, Tao Z, Liang Y, Ma M, Adah D, Ding W, Chen L, Li X, Dai L, Fanuel S, Zhao S, Hu W, Wu D, Duan Z, Zhou F, Qin L, Chen X, Yang Z. Plasmodium immunotherapy combined with gemcitabine has a synergistic inhibitory effect on tumor growth and metastasis in murine Lewis lung cancer models. Front Oncol 2023; 13:1181176. [PMID: 37916167 PMCID: PMC10618005 DOI: 10.3389/fonc.2023.1181176] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 09/18/2023] [Indexed: 11/03/2023] Open
Abstract
Objective Our previous studies have demonstrated that Plasmodium immunotherapy (infection) has antitumor effects in mice. However, as a new form of immunotherapy, this therapy has a weakness: its specific killing effect on tumor cells is relatively weak. Therefore, we tested whether Plasmodium immunotherapy combined with gemcitabine (Gem), a representative chemotherapy drug, has synergistic antitumor effects. Methods We designed subcutaneously and intravenously implanted murine Lewis lung cancer (LLC) models to test the antitumor effect of Plasmodium chabaudi ASS (Pc) infection in combination with Gem treatment and explored its underlying mechanisms. Results We found that both Pc infection alone and Gem treatment alone significantly inhibited tumor growth in the subcutaneous model, and combination therapy was more effective than either monotherapy. Monotherapy only tended to prolong the survival of tumor-bearing mice, while the combination therapy significantly extended the survival of mice, indicating a significant synergistic effect of the combination. In the mechanistic experiments, we found that the combination therapy significantly upregulated E-cadherin and downregulated Snail protein expression levels, thus inhibiting epithelial-mesenchymal transition (EMT) of tumor cells, which may be due to the blockade of CXCR2/TGF-β-mediated PI3K/Akt/GSK-3β signaling pathway. Conclusion The combination of Pc and Gem plays a synergistic role in inhibiting tumor growth and metastasis, and prolonging mice survival in murine lung cancer models. These effects are partially attributed to the inhibition of EMT of tumor cells, which is potentially due to the blockade of CXCR2/TGF-β-mediated PI3K/Akt/GSK-3β/Snail signaling pathway. The clinical transformation of Plasmodium immunotherapy combined with Gem for lung cancer is worthy of expectation.
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Affiliation(s)
- Xiao Chen
- Department of Medical Oncology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
| | - Zhu Tao
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
- CAS-Lamvac (Guangzhou) Biomedical Technology Co., Ltd., Guangzhou, Guangdong, China
| | - Yun Liang
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Meng Ma
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
- The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Dickson Adah
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
| | - Wenting Ding
- CAS-Lamvac (Guangzhou) Biomedical Technology Co., Ltd., Guangzhou, Guangdong, China
| | - Lili Chen
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
| | - Xiaofen Li
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
| | - Linglin Dai
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
| | - Songwe Fanuel
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
- Department of Applied Biosciences and Biotechnology, Faculty of Science and Technology, Midlands State University, Gweru, Zimbabwe
| | - Siting Zhao
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
- CAS-Lamvac (Guangzhou) Biomedical Technology Co., Ltd., Guangzhou, Guangdong, China
| | - Wen Hu
- CAS-Lamvac (Guangzhou) Biomedical Technology Co., Ltd., Guangzhou, Guangdong, China
| | - Donghai Wu
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
| | - Ziyuan Duan
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
| | - Fang Zhou
- CAS-Lamvac (Guangzhou) Biomedical Technology Co., Ltd., Guangzhou, Guangdong, China
| | - Li Qin
- CAS-Lamvac (Guangzhou) Biomedical Technology Co., Ltd., Guangzhou, Guangdong, China
| | - Xiaoping Chen
- State Key Laboratory of Respiratory Disease, Center for Infection and Immunity, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (CAS), Guangzhou, Guangdong, China
- CAS-Lamvac (Guangzhou) Biomedical Technology Co., Ltd., Guangzhou, Guangdong, China
| | - Zhaoqing Yang
- Department of Pathogen Biology and Immunology, Kunming Medical University, Kunming, Yunnan, China
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Fitri LE, Sardjono TW, Winaris N, Pawestri AR, Endharti AT, Norahmawati E, Handayani D, Kurniawan SN, Azizah S, Alifia LI, Asiyah R, Ayuningtyas TR. Bifidobacterium longum Administration Diminishes Parasitemia and Inflammation During Plasmodium berghei Infection in Mice. J Inflamm Res 2023; 16:1393-1404. [PMID: 37006809 PMCID: PMC10065020 DOI: 10.2147/jir.s400782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 02/17/2023] [Indexed: 03/28/2023] Open
Abstract
Purpose During Plasmodium berghei (P. berghei) infection, infected erythrocytes are sequestered in gut tissues through microvascular circulation, leading to dysbiosis. This study aimed to investigate the effect of Lactobacillus casei (L. casei) and Bifidobacterium longum (B. longum) administration on the parasitemia level, gut microbiota composition, expression of cluster of differentiation 103 (CD103) in intestinal dendritic and T regulatory cells (T reg), plasma interferon gamma (IFN-γ) and tumor necrosis factor (TNF-α) levels in P. berghei infected mice. Methods P. berghei was inoculated intraperitoneally. Infected mice were randomly divided into 5 groups and treated with either L. casei, B. longum, or the combination of both for 5 days before up to 6 days post-infection (p.i). The control group was treated with phosphate-buffered saline (PBS), while uninfected mice were used as negative control. Levels of CD103 and forkhead box P3 (FoxP3) expression were measured by direct immunofluorescense, while plasma IFN-γ and TNF-α level were determined using enzyme-linked immunosorbent assay (ELISA). Results All treated groups showed an increase in parasitemia from day 2 to day 6 p.i, which was significant at day 2 p.i (p = 0.001), with the group receiving B. longum displaying the lowest degree of parasitemia. Significant reduction in plasma IFN-γ and TNF-α levels was observed in the group receiving B. longum (p = 0.022 and p = 0.026, respectively). The CD103 and FoxP3 expression was highest in the group receiving B. longum (p = 0.01 and p = 0.02, respectively). Conclusion B. longum showed the best protective effect against Plasmodium infection by reducing the degree of parasitemia and modulating the gut immunity. This provides a basis for further research involving probiotic supplementation in immunity modulation of infectious diseases.
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Affiliation(s)
- Loeki Enggar Fitri
- Department of Parasitology, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- AIDS, Toxoplasma, Opportunistic Disease, and Malaria (ATOM) Research Group, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Teguh Wahju Sardjono
- Department of Parasitology, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- AIDS, Toxoplasma, Opportunistic Disease, and Malaria (ATOM) Research Group, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- Correspondence: Teguh Wahju Sardjono, Department of Parasitology, Faculty of Medicine Universitas Brawijaya, Jl. Veteran, Malang, 65145, Indonesia, Tel +62 341 569117, Fax +62 341 564755, Email
| | - Nuning Winaris
- Department of Parasitology, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- AIDS, Toxoplasma, Opportunistic Disease, and Malaria (ATOM) Research Group, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Aulia Rahmi Pawestri
- Department of Parasitology, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- AIDS, Toxoplasma, Opportunistic Disease, and Malaria (ATOM) Research Group, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Agustina Tri Endharti
- Department of Parasitology, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Eviana Norahmawati
- Department of Anatomical Pathology, Dr. Saiful Anwar Hospital/Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Dian Handayani
- Department of Nutrition, Faculty of Health Sciences, Universitas Brawijaya, Malang, Indonesia
| | | | - Syafiatul Azizah
- Master Program in Biomedical Sciences, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Lustyafa Inassani Alifia
- Master Program in Biomedical Sciences, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- Department of Parasitology, Faculty of Medicine, University of Muhammadiyah Malang, Malang, Indonesia
| | - Rokhmatul Asiyah
- Master Program in Biomedical Sciences, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- State University of Malang, Malang, Indonesia
| | - Tita Rachma Ayuningtyas
- Master Program in Biomedical Sciences, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
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Sulczewski FB, Martino LA, Salles D, Yamamoto MM, Rosa DS, Boscardin SB. STAT3 signaling modulates the immune response induced after antigen targeting to conventional type 1 dendritic cells through the DEC205 receptor. Front Immunol 2022; 13:1006996. [PMID: 36330518 PMCID: PMC9624190 DOI: 10.3389/fimmu.2022.1006996] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/28/2022] [Indexed: 11/23/2022] Open
Abstract
Conventional dendritic cells (cDC) are a group of antigen-presenting cells specialized in priming T cell responses. In mice, splenic cDC are divided into conventional type 1 DC (cDC1) and conventional type 2 (cDC2). cDC1 are specialized to prime the Th1 CD4+ T cell response, while cDC2 are mainly associated with the induction of follicular helper T cell responses to support germinal center formation. However, the mechanisms that control the functions of cDC1 and cDC2 are not fully understood, especially the signaling pathways that can modulate their ability to promote different CD4+ T cell responses. Here, we targeted a model antigen for cDC1 and cDC2, through DEC205 and DCIR2 receptors, respectively, to study the role of the STAT3 signaling pathway in the ability of these cells to prime CD4+ T cells. Our results show that, in the absence of the STAT3 signaling pathway, antigen targeting to cDC2 induced similar frequencies of Tfh cells between STAT3-deficient mice compared to fully competent mice. On the other hand, Th1 and Th1-like Tfh cell responses were significantly reduced in STAT3-deficient mice after antigen targeting to cDC1 via the DEC205 receptor. In summary, our results indicate that STAT3 signaling does not control the ability of cDC2 to promote Tfh cell responses after antigen targeting via the DCIR2 receptor, but modulates the function of cDC1 to promote Th1 and Th1-like Tfh T cell responses after antigen targeting via the DEC205 receptor.
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Affiliation(s)
| | - Larissa Alves Martino
- Departamento de Parasitologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Davi Salles
- Departamento de Parasitologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Márcio Massao Yamamoto
- Departamento de Parasitologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Daniela Santoro Rosa
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
- Instituto de Investigação em Imunologia (iii), INCT, Sao Paulo, Brazil
| | - Silvia Beatriz Boscardin
- Departamento de Parasitologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, Brazil
- Instituto de Investigação em Imunologia (iii), INCT, Sao Paulo, Brazil
- *Correspondence: Silvia Beatriz Boscardin,
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5
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Scovino AM, Totino PRR, Morrot A. Eryptosis as a New Insight in Malaria Pathogenesis. Front Immunol 2022; 13:855795. [PMID: 35634341 PMCID: PMC9136947 DOI: 10.3389/fimmu.2022.855795] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 04/04/2022] [Indexed: 11/25/2022] Open
Abstract
Eryptosis is a programmed cell death-like process that occurs in red blood cells. Although the red blood cells are anucleated, there are similarities between eryptosis and apoptosis, such as increased calcium efflux, calpain activation, phosphatidylserine exposure, cell blebbing and cell shrinkage. Eryptosis occurs physiologically in red blood cells, as a consequence of the natural senescence process of these cells, but it can also be stimulated in pathological situations such as metabolic syndromes, uremic syndromes, polycythemia vera, anemias such as sickle cell anemia and thalassemia, and infectious processes including Plasmodium infection. Infection-induced eryptosis is believed to contribute to damage caused by Plasmodium, but it’s still a topic of debate in the literature. In this review, we provided an overview of eryptosis mechanisms and its possible pathogenic role in malaria.
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Affiliation(s)
- Aline Miranda Scovino
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Pesquisa em Malária, Instituto Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | | | - Alexandre Morrot
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- *Correspondence: Alexandre Morrot,
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Assis PA, Fernandes Durso D, Chacon Cavalcante F, Zaniratto R, Carvalho-Silva AC, Cunha-Neto E, Golenbock DT, Rodrigues Pinto Ferreira L, Tostes Gazzinelli R. Integrative analysis of microRNA and mRNA expression profiles of monocyte-derived dendritic cells differentiation during experimental cerebral malaria. J Leukoc Biol 2020; 108:1183-1197. [PMID: 32362022 PMCID: PMC11215656 DOI: 10.1002/jlb.1ma0320-731r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/19/2020] [Accepted: 03/23/2020] [Indexed: 12/27/2022] Open
Abstract
Heterogeneity and high plasticity are common features of cells from the mononuclear phagocyte system: monocytes (MOs), macrophages, and dendritic cells (DCs). Upon activation by microbial agents, MO can differentiate into MO-derived DCs (MODCs). In previous work, we have shown that during acute infection with Plasmodium berghei ANKA (PbA), MODCs become, transiently, the main CD11b+ myeloid population in the spleen (SP) and once recruited to the brain play an important role in the development of experimental cerebral malaria (ECM). Here, we isolated 4 cell populations: bone marrow (BM) MOs (BM-MOs) and SP-MOs from uninfected mice; BM inflammatory MOs (BM-iMOs) and SP-MODCs from PbA-infected mice and used a system biology approach to a holistic transcriptomic comparison and provide an interactome analysis by integrating differentially expressed miRNAs (DEMs) and their differentially expressed gene targets (DEGs) data. The Jaccard index (JI) was used for gauging the similarity and diversity among these cell populations. Whereas BM-MOs, BM-iMOs, and SP-MOs presented high similarity of DEGs, SP-MODCs distinguished by showing a greater number of DEGs. Moreover, functional analysis identified an enrichment in canonical pathways, such as DC maturation, neuroinflammation, and IFN signaling. Upstream regulator analysis identified IFNγ as the potential upstream molecule that can explain the observed DEMs-Target DEGs intersections in SP-MODCs. Finally, directed target analysis and in vivo/ex vivo assays indicate that SP-MODCs differentiate in the SP and IFNγ is a main driver of this process.
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Affiliation(s)
| | - Danielle Fernandes Durso
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | | | - Ricardo Zaniratto
- Laboratory of Immunology, Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
| | - Ana Carolina Carvalho-Silva
- RNA Systems Biology Laboratory (RSBL), Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Edecio Cunha-Neto
- Laboratory of Immunology, Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
- Division of Clinical Immunology and Allergy, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Douglas Taylor Golenbock
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Ludmila Rodrigues Pinto Ferreira
- RNA Systems Biology Laboratory (RSBL), Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ricardo Tostes Gazzinelli
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
- Laboratory of Immunopathology, Fundação Oswaldo Cruz - Minas, Belo Horizonte, Minas Gerais, Brazil
- Plataforma de Medicina Translacional, Fundação Oswaldo Cruz/Faculdade de Medicina de Ribeirão Preto, Ribeirão Preto, São Paulo, Brazil
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7
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Kuehlwein JM, Borsche M, Korir PJ, Risch F, Mueller A, Hübner MP, Hildner K, Hoerauf A, Dunay IR, Schumak B. Protection of Batf3-deficient mice from experimental cerebral malaria correlates with impaired cytotoxic T-cell responses and immune regulation. Immunology 2020; 159:193-204. [PMID: 31631339 PMCID: PMC6954726 DOI: 10.1111/imm.13137] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 09/30/2019] [Accepted: 10/14/2019] [Indexed: 12/28/2022] Open
Abstract
Excessive inflammatory immune responses during infections with Plasmodium parasites are responsible for severe complications such as cerebral malaria (CM) that can be studied experimentally in mice. Dendritic cells (DCs) activate cytotoxic CD8+ T-cells and initiate immune responses against the parasites. Batf3-/- mice lack a DC subset, which efficiently induces strong CD8 T-cell responses by cross-presentation of exogenous antigens. Here we show that Batf3-/- mice infected with Plasmodium berghei ANKA (PbA) were protected from experimental CM (ECM), characterized by a stable blood-brain barrier (BBB) and significantly less infiltrated peripheral immune cells in the brain. Importantly, the absence of ECM in Batf3-/- mice correlated with attenuated responses of cytotoxic T-cells, as their parasite-specific lytic activity as well as the production of interferon gamma and granzyme B were significantly decreased. Remarkably, spleens of ECM-protected Batf3-/- mice had elevated levels of regulatory immune cells and interleukin 10. Thus, protection from ECM in PbA-infected Batf3-/- mice was associated with the absence of strong CD8+ T-cell activity and induction of immunoregulatory mediators and cells.
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MESH Headings
- Animals
- Basic-Leucine Zipper Transcription Factors/deficiency
- Basic-Leucine Zipper Transcription Factors/genetics
- Blood-Brain Barrier/immunology
- Blood-Brain Barrier/parasitology
- Brain/immunology
- Brain/metabolism
- Brain/parasitology
- Cells, Cultured
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Dendritic Cells/parasitology
- Disease Models, Animal
- Female
- Granzymes/immunology
- Granzymes/metabolism
- Host-Parasite Interactions
- Interferon-gamma/immunology
- Interferon-gamma/metabolism
- Interleukin-10/immunology
- Interleukin-10/metabolism
- Malaria, Cerebral/immunology
- Malaria, Cerebral/metabolism
- Malaria, Cerebral/parasitology
- Malaria, Cerebral/prevention & control
- Mice, Inbred C57BL
- Mice, Knockout
- Plasmodium berghei/immunology
- Plasmodium berghei/pathogenicity
- Repressor Proteins/deficiency
- Repressor Proteins/genetics
- Spleen/immunology
- Spleen/metabolism
- Spleen/parasitology
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/metabolism
- T-Lymphocytes, Cytotoxic/parasitology
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Affiliation(s)
- Janina M. Kuehlwein
- Institute of Medical Microbiology, Immunology and ParasitologyUniversity Hospital BonnBonnGermany
| | - Max Borsche
- Institute of Medical Microbiology, Immunology and ParasitologyUniversity Hospital BonnBonnGermany
| | - Patricia J. Korir
- Institute of Medical Microbiology, Immunology and ParasitologyUniversity Hospital BonnBonnGermany
| | - Frederic Risch
- Institute of Medical Microbiology, Immunology and ParasitologyUniversity Hospital BonnBonnGermany
| | - Ann‐Kristin Mueller
- Parasitology UnitCentre for Infectious DiseasesHeidelberg University HospitalHeidelbergGermany
- DZIF German Center for Infection ResearchPartner Site HeidelbergHeidelbergGermany
| | - Marc P. Hübner
- Institute of Medical Microbiology, Immunology and ParasitologyUniversity Hospital BonnBonnGermany
| | - Kai Hildner
- Medical Department 1University Hospital ErlangenErlangenGermany
| | - Achim Hoerauf
- Institute of Medical Microbiology, Immunology and ParasitologyUniversity Hospital BonnBonnGermany
- DZIF German Center for Infection ResearchPartner Site Bonn‐CologneBonnGermany
| | - Ildiko Rita Dunay
- Institute of Inflammation and NeurodegenerationUniversity of MagdeburgMagdeburgGermany
| | - Beatrix Schumak
- Institute of Medical Microbiology, Immunology and ParasitologyUniversity Hospital BonnBonnGermany
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8
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Na J, Khan A, Kim JK, Wadood A, Choe YL, Walker DI, Jones DP, Lim CS, Park YH. Discovery of metabolic alterations in the serum of patients infected with Plasmodium spp. by high-resolution metabolomics. Metabolomics 2019; 16:9. [PMID: 31872321 DOI: 10.1007/s11306-019-1630-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 12/18/2019] [Indexed: 01/29/2023]
Abstract
INTRODUCTION Despite the advances in diagnosis and treatment, malaria has still not been eradicated. Metabolic interactions between the host and Plasmodium may present novel targets for malaria control, but such interactions are yet to be deciphered. An exploration of metabolic interactions between humans and two Plasmodium species by high-resolution metabolomics may provide fundamental insights that can aid the development of a new strategy for the control of malaria. OBJECTIVES This study aimed at exploring the metabolic changes in the sera of patients infected with Plasmodium falciparum and Plasmodium vivax. METHODS Uni- and multivariate metabolomic analyses were performed on the sera of four groups of patients, namely normal control (N, n = 100), P. falciparum-infected patients (PF, n = 21), P. vivax-infected patients (PV, n = 74), and non-malarial pyretic patients (Pyr, n = 25). RESULTS Univariate and multivariate analyses of N, PF, and PV groups showed differential metabolic phenotypes and subsequent comparisons in pairs revealed significant features. Pathway enrichment test with significant features showed the affected pathways, namely glycolysis/gluconeogenesis for PF and retinol metabolism for PV. The metabolites belonging to the affected pathways included significantly low 2,3-diphosphoglycerate and glyceraldehyde-3-phosphate in the sera of PF. The sera of PV had significantly low levels of retinol but high levels of retinoic acid. CONCLUSION Our study reveals metabolic alterations induced by Plasmodium spp. in human serum and would serve as a milestone in the development of novel anti-malarial strategies.
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Affiliation(s)
- Jinhyuk Na
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong, 30019, Republic of Korea
| | - Adnan Khan
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong, 30019, Republic of Korea
| | - Jae Kwan Kim
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong, 30019, Republic of Korea
| | - Abdul Wadood
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong, 30019, Republic of Korea
| | - Young Lan Choe
- Department of Laboratory Medicine, Korea University Guro Hospital, 148 Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
| | - Douglas I Walker
- Clinical Biomarkers Laboratory, Department of Medicine, Emory University, Atlanta, GA, 30308, USA
| | - Dean P Jones
- Clinical Biomarkers Laboratory, Department of Medicine, Emory University, Atlanta, GA, 30308, USA
| | - Chae Seung Lim
- Department of Laboratory Medicine, Korea University Guro Hospital, 148 Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea.
| | - Youngja Hwang Park
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong, 30019, Republic of Korea.
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9
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Hirako IC, Assis PA, Galvão-Filho B, Luster AD, Antonelli LR, Gazzinelli RT. Monocyte-derived dendritic cells in malaria. Curr Opin Microbiol 2019; 52:139-150. [PMID: 31542508 DOI: 10.1016/j.mib.2019.08.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 08/03/2019] [Accepted: 08/17/2019] [Indexed: 12/16/2022]
Abstract
The pathogenesis of malaria is a multifactorial syndrome associated with a deleterious inflammatory response that is responsible for many of the clinical manifestations. While dendritic cells (DCs) play a critical role in initiating acquired immunity and host resistance to infection, they also play a pathogenic role in inflammatory diseases. In our recent studies, we found in different rodent malaria models that the monocyte-derived DCs (MO-DCs) become, transiently, a main DC population in spleens and inflamed non-lymphoid organs. These studies suggest that acute infection with Plasmodium berghei promotes the differentiation of splenic monocytes into inflammatory monocytes (iMOs) and thereafter into MO-DCs that play a pathogenic role by promoting inflammation and tissue damage. The recruitment of MO-DCs to the lungs and brain are dependent on expression of CCR4 and CCR5, respectively, and expression of respective chemokine ligands in each organ. Once they reach the target organ the MO-DCs produce the CXCR3 ligands (CXCL9 and CXCL10), recruit CD8+ T cells, and produce toxic metabolites that play an important role in the development of experimental cerebral malaria (ECM) and acute respiratory distress syndrome (ARDS).
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Affiliation(s)
- Isabella C Hirako
- Fundação Oswaldo Cruz - Minas, 30190-002 Belo Horizonte, MG, Brazil; University of Massachusetts Medical School, 01605 Worcester, MA, United States
| | - Patrícia A Assis
- University of Massachusetts Medical School, 01605 Worcester, MA, United States
| | | | - Andrew D Luster
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Lis Rv Antonelli
- Fundação Oswaldo Cruz - Minas, 30190-002 Belo Horizonte, MG, Brazil
| | - Ricardo T Gazzinelli
- Fundação Oswaldo Cruz - Minas, 30190-002 Belo Horizonte, MG, Brazil; University of Massachusetts Medical School, 01605 Worcester, MA, United States; Plataforma de Medicina Translacional, Fundação Oswaldo Cruz, 14049-900, Ribeirão Preto, SP, Brazil.
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10
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Gowda DC, Wu X. Parasite Recognition and Signaling Mechanisms in Innate Immune Responses to Malaria. Front Immunol 2018; 9:3006. [PMID: 30619355 PMCID: PMC6305727 DOI: 10.3389/fimmu.2018.03006] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 12/05/2018] [Indexed: 12/20/2022] Open
Abstract
Malaria caused by the Plasmodium family of parasites, especially P.falciparum and P. vivax, is a major health problem in many countries in the tropical and subtropical regions of the world. The disease presents a wide array of systemic clinical conditions and several life-threatening organ pathologies, including the dreaded cerebral malaria. Like many other infectious diseases, malaria is an inflammatory response-driven disease, and positive outcomes to infection depend on finely tuned regulation of immune responses that efficiently clear parasites and allow protective immunity to develop. Immune responses initiated by the innate immune system in response to parasites play key roles both in protective immunity development and pathogenesis. Initial pro-inflammatory responses are essential for clearing infection by promoting appropriate cell-mediated and humoral immunity. However, elevated and prolonged pro-inflammatory responses owing to inappropriate cellular programming contribute to disease conditions. A comprehensive knowledge of the molecular and cellular mechanisms that initiate immune responses and how these responses contribute to protective immunity development or pathogenesis is important for developing effective therapeutics and/or a vaccine. Historically, in efforts to develop a vaccine, immunity to malaria was extensively studied in the context of identifying protective humoral responses, targeting proteins involved in parasite invasion or clearance. The innate immune response was thought to be non-specific. However, during the past two decades, there has been a significant progress in understanding the molecular and cellular mechanisms of host-parasite interactions and the associated signaling in immune responses to malaria. Malaria infection occurs at two stages, initially in the liver through the bite of a mosquito, carrying sporozoites, and subsequently, in the blood through the invasion of red blood cells by merozoites released from the infected hepatocytes. Soon after infection, both the liver and blood stage parasites are sensed by various receptors of the host innate immune system resulting in the activation of signaling pathways and production of cytokines and chemokines. These immune responses play crucial roles in clearing parasites and regulating adaptive immunity. Here, we summarize the knowledge on molecular mechanisms that underlie the innate immune responses to malaria infection.
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Affiliation(s)
- D Channe Gowda
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Xianzhu Wu
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA, United States
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11
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Chakraborty B, Mondal P, Gajendra P, Mitra M, Das C, Sengupta S. Deciphering genetic regulation of CD14 by SP1 through characterization of peripheral blood mononuclear transcriptome of P. faiciparum and P. vivax infected malaria patients. EBioMedicine 2018; 37:442-452. [PMID: 30337251 PMCID: PMC6286629 DOI: 10.1016/j.ebiom.2018.09.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 09/20/2018] [Accepted: 09/26/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Plasmodium falciparum and Plasmodium vivax are two major parasites responsible for malaria which remains a threat to almost 50% of world's population despite decade-long eradication program. One possible reason behind this conundrum is that the bases of clinical variability in malaria caused by either species are complex and poorly understood. METHODS Whole-genome transcriptome was analyzed to identify the active and predominant pathways in the PBMC of P. falciparum and P. vivax infected malaria patients. Deregulated genes were identified and annotated using R Bioconductor and DAVID/KEGG respectively. Genetic and functional regulation of CD14, a prioritized candidate, were established by quantitative RT-PCR, genotyping using RFLP and resequencing, mapping of transcription factor binding using CONSITE and TFBIND, dual luciferase assay, western blot analysis, RNAi- mediated gene knockdown and chromatin-immunoprecipation. FINDINGS The study highlighted that deregulation of host immune and inflammatory genes particularly CD14 as a key event in P. falciparum malaria. An abundance of allele-C of rs5744454, located in CD14 promoter, in severe malaria motivated us to establish an allele-specific regulation of CD14 by SP1. An enhancement of SP1 and CD14 expression was observed in artemisinin treated human monocyte cell line. INTERPRETATION Our data not only reinstates that CD14 of TLR pathway plays a predominant role in P. falciparum malaria, it establishes a functional basis for genetic association of rs5744454 with P. falciparum severe malaria by demonstrating a cis-regulatory role of this promoter polymorphism. Moreover, the study points towards a novel pharmacogenetic aspect of artemisinin-based anti-malarial therapy. FUND: DST-SERB, Govt. of India, SR/SO/HS-0056/2013.
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Affiliation(s)
- Bijurica Chakraborty
- Department of Biochemistry, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700 019, West Bengal, India
| | - Payel Mondal
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, West Bengal, India
| | - Pragya Gajendra
- School of Studies in Anthropology, Pt. Ravishankar Shukla University, Raipur 492010, Chhattisgarh, India
| | - Mitashree Mitra
- School of Studies in Anthropology, Pt. Ravishankar Shukla University, Raipur 492010, Chhattisgarh, India
| | - Chandrima Das
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, West Bengal, India
| | - Sanghamitra Sengupta
- Department of Biochemistry, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700 019, West Bengal, India.
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12
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Díaz-Varela M, de Menezes-Neto A, Perez-Zsolt D, Gámez-Valero A, Seguí-Barber J, Izquierdo-Useros N, Martinez-Picado J, Fernández-Becerra C, Del Portillo HA. Proteomics study of human cord blood reticulocyte-derived exosomes. Sci Rep 2018; 8:14046. [PMID: 30232403 PMCID: PMC6145868 DOI: 10.1038/s41598-018-32386-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 09/03/2018] [Indexed: 12/17/2022] Open
Abstract
Reticulocyte-derived exosomes (Rex), extracellular vesicles of endocytic origin, were initially discovered as a cargo-disposal mechanism of obsolete proteins in the maturation of reticulocytes into erythrocytes. In this work, we present the first mass spectrometry-based proteomics of human Rex (HuRex). HuRex were isolated from cultures of human reticulocyte-enriched cord blood using different culture conditions and exosome isolation methods. The newly described proteome consists of 367 proteins, most of them related to exosomes as revealed by gene ontology over-representation analysis and include multiple transporters as well as proteins involved in exosome biogenesis and erythrocytic disorders. Immunoelectron microscopy validated the presence of the transferrin receptor. Moreover, functional assays demonstrated active capture of HuRex by mature dendritic cells. As only seven proteins have been previously associated with HuRex, this resource will facilitate studies on the role of human reticulocyte-derived exosomes in normal and pathological conditions affecting erythropoiesis.
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Affiliation(s)
| | - Armando de Menezes-Neto
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Instituto Aggeu Magalhães-FIOCRUZ, Recife, Pernambuco, Brazil
| | | | - Ana Gámez-Valero
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Department of Pathology & REMAR-IVECAT Group, Hospital Universitari and Health Sciences Research Institute Germans Trias i Pujol, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Joan Seguí-Barber
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Nuria Izquierdo-Useros
- IrsiCaixa AIDS Research Institute, Badalona, Spain
- IGTP Institut d'Investigació Germans Trias i Pujol, Badalona, Spain
| | - Javier Martinez-Picado
- IrsiCaixa AIDS Research Institute, Badalona, Spain
- Universitat de Vic - Universitat Central de Catalunya (UVic-UCC), Vic, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Carmen Fernández-Becerra
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
- IGTP Institut d'Investigació Germans Trias i Pujol, Badalona, Spain.
| | - Hernando A Del Portillo
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
- IGTP Institut d'Investigació Germans Trias i Pujol, Badalona, Spain.
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain.
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13
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Parmar R, Patel H, Yadav N, Parikh R, Patel K, Mohankrishnan A, Bhurani V, Joshi U, Dalai SK. Infectious Sporozoites of Plasmodium berghei Effectively Activate Liver CD8α + Dendritic Cells. Front Immunol 2018; 9:192. [PMID: 29472929 PMCID: PMC5809440 DOI: 10.3389/fimmu.2018.00192] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 01/23/2018] [Indexed: 11/13/2022] Open
Abstract
Immunization with radiation-attenuated sporozoites (RAS) shown to confer complete sterile protection against Plasmodia liver-stage (LS) infection that lasts about 6 to 9 months in mice. We have found that the intermittent infectious sporozoite challenge to immune mice following RAS vaccination extends the longevity of sterile protection by maintaining CD8+ T cell memory responses to LS infection. It is reported that CD8α+ dendritic cells (DCs) are involved in the induction of LS-specific CD8+ T cells following RAS or genetically attenuated parasite (GAP) vaccination. In this study, we demonstrate that CD8α+ DCs respond differently to infectious sporozoite or RAS inoculation. The higher accumulation and activation of CD8α+ DCs was seen in the liver in response to infectious sporozoite 72 h postinoculation and found to be associated with higher expression of chemokines (CCL-20 and CCL-21) and type I interferon response via toll-like receptor signaling in liver. Moreover, the infectious sporozoites were found to induce qualitative changes in terms of the increased MHCII expression as well as costimulatory molecules including CD40 on the CD8α+ DCs compared to RAS inoculation. We have also found that infectious sporozoite challenge increased CD40L-expressing CD4+ T cells, which could help CD8+ T cells in the liver through "licensing" of the antigen-presenting cells. Our results suggest that infectious sporozoite challenge to prior RAS immunized mice modulates the CD8α+ DCs, which might be shaping the fate of memory CD8+ T cells against Plasmodium LS infection.
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Affiliation(s)
- Rajesh Parmar
- Institute of Science, Nirma University, Ahmedabad, India
| | - Hardik Patel
- Institute of Science, Nirma University, Ahmedabad, India
| | - Naveen Yadav
- Institute of Science, Nirma University, Ahmedabad, India
| | - Ritika Parikh
- Institute of Science, Nirma University, Ahmedabad, India
| | - Khyati Patel
- Institute of Science, Nirma University, Ahmedabad, India
| | | | | | - Urja Joshi
- Institute of Science, Nirma University, Ahmedabad, India
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14
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Antonialli R, Sulczewski FB, Amorim KNDS, Almeida BDS, Ferreira NS, Yamamoto MM, Soares IS, Ferreira LCDS, Rosa DS, Boscardin SB. CpG Oligodeoxinucleotides and Flagellin Modulate the Immune Response to Antigens Targeted to CD8α + and CD8α - Conventional Dendritic Cell Subsets. Front Immunol 2017; 8:1727. [PMID: 29255470 PMCID: PMC5723008 DOI: 10.3389/fimmu.2017.01727] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 11/22/2017] [Indexed: 02/06/2023] Open
Abstract
Dendritic cells (DCs) are antigen-presenting cells essential for the induction of adaptive immune responses. Their unprecedented ability to present antigens to T cells has made them excellent targets for vaccine development. In the last years, a new technology based on antigen delivery directly to different DC subsets through the use of hybrid monoclonal antibodies (mAbs) to DC surface receptors fused to antigens of interest opened new perspectives for the induction of robust immune responses. Normally, the hybrid mAbs are administered with adjuvants that induce DC maturation. In this work, we targeted an antigen to the CD8α+ or the CD8α− DC subsets in the presence of CpG oligodeoxinucleotides (ODN) or bacterial flagellin, using hybrid αDEC205 or αDCIR2 mAbs, respectively. We also accessed the role of toll-like receptors (TLRs) 5 and 9 signaling in the induction of specific humoral and cellular immune responses. Wild-type and TLR5 or TLR9 knockout mice were immunized with two doses of the hybrid αDEC205 or αDCIR2 mAbs, as well as with an isotype control, together with CpG ODN 1826 or flagellin. A chimeric antigen containing the Plasmodium vivax 19 kDa portion of the merozoite surface protein (MSP119) linked to the Pan-allelic DR epitope was fused to each mAb. Specific CD4+ T cell proliferation, cytokine, and antibody production were analyzed. We found that CpG ODN 1826 or flagellin were able to induce CD4+ T cell proliferation, CD4+ T cells producing pro-inflammatory cytokines, and specific antibodies when the antigen was targeted to the CD8α+ DC subset. On the other hand, antigen targeting to CD8α− DC subset promoted specific antibody responses and proliferation, but no detectable pro-inflammatory CD4+ T cell responses. Also, specific antibody responses after antigen targeting to CD8α+ or CD8α− DCs were reduced in the absence of TLR9 or TLR5 signaling, while CD4+ T cell proliferation was mainly affected after antigen targeting to CD8α+ DCs and in the absence of TLR9 signaling. These results extend our understanding of the modulation of specific immune responses induced by antigen targeting to DCs in the presence of different adjuvants. Such knowledge may be useful for the optimization of DC-based vaccines.
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Affiliation(s)
- Renan Antonialli
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | | | - Bianca da Silva Almeida
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Natália Soares Ferreira
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Márcio Massao Yamamoto
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Irene Silva Soares
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Daniela Santoro Rosa
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil.,Institute for Investigation in Immunology (iii), INCT, São Paulo, Brazil
| | - Silvia Beatriz Boscardin
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.,Institute for Investigation in Immunology (iii), INCT, São Paulo, Brazil
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15
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Lonien SCH, Malvezi AD, Suzukawa HT, Yamauchi LM, Yamada-Ogatta SF, Rizzo LV, Bordignon J, Pinge-Filho P. Response to Trypanosoma cruzi by Human Blood Cells Enriched with Dentritic Cells Is Controlled by Cyclooxygenase-2 Pathway. Front Microbiol 2017; 8:2020. [PMID: 29118740 PMCID: PMC5660982 DOI: 10.3389/fmicb.2017.02020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Accepted: 10/03/2017] [Indexed: 12/14/2022] Open
Abstract
Chagas disease (Cd) or American human trypanosomiasis is caused by Trypanosoma cruzi and affects ~7 million people, mostly in Latin America. The infective trypomastigote forms of the parasite can invade several human blood cell populations, including monocytes and dendritic cells (DC). Although these cells display a wide functional diversity, their interactions with T. cruzi via cyclooxygenase (COX) and cyclic adenosine monophosphate (cAMP) dependent pathways have not been analyzed. To exploiting this mechanism, DC-enriched peripheral human blood mononuclear cell populations (DC-PBMC) were used as our model. Our results showed that the treatment of these cell populations with celecoxib (CEL), a cyclooxygenase-2 selective inhibitor or SQ 22,536, an adenilate cyclase inhibitor, significantly caused marked inhibition of T. cruzi infection. In contrast, aspirin (ASA, a non-selective COX-1 and COX-2 inhibitor) treatment did not inhibit the infection of the cells by the parasite and was independent of nitric oxide (NO) production. The expression of co-stimulatory molecules CD80 and CD86 were similar on cells treated or not with both COX-inhibitors. The infection stimulated the release of TNF-α, IL-1β, IL-6, IL-8, and IL-10 production by infected cells. Treatment with ASA or CEL did not affect TNF-α, IL-6, IL-8, IL-10, and NO production by infected cells, but increased IL-1β production by them. Our results suggest a key role of COX-2 and cAMP pathways in T. cruzi invasion process of human blood cells and these pathways may represent targets of new therapeutic options for Cd.
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Affiliation(s)
- Sandra C H Lonien
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Aparecida D Malvezi
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Helena T Suzukawa
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Lucy M Yamauchi
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Sueli F Yamada-Ogatta
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Luiz V Rizzo
- Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Juliano Bordignon
- Laboratório de Virologia Molecular, Instituto Carlos Chagas/Fiocruz, Curitiba, Brazil
| | - Phileno Pinge-Filho
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
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16
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López C, Yepes-Pérez Y, Hincapié-Escobar N, Díaz-Arévalo D, Patarroyo MA. What Is Known about the Immune Response Induced by Plasmodium vivax Malaria Vaccine Candidates? Front Immunol 2017; 8:126. [PMID: 28243235 PMCID: PMC5304258 DOI: 10.3389/fimmu.2017.00126] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 01/25/2017] [Indexed: 12/15/2022] Open
Abstract
Malaria caused by Plasmodium vivax continues being one of the most important infectious diseases around the world; P. vivax is the second most prevalent species and has the greatest geographic distribution. Developing an effective antimalarial vaccine is considered a relevant control strategy in the search for means of preventing the disease. Studying parasite-expressed proteins, which are essential in host cell invasion, has led to identifying the regions recognized by individuals who are naturally exposed to infection. Furthermore, immunogenicity studies have revealed that such regions can trigger a robust immune response that can inhibit sporozoite (hepatic stage) or merozoite (erythrocyte stage) invasion of a host cell and induce protection. This review provides a synthesis of the most important studies to date concerning the antigenicity and immunogenicity of both synthetic peptide and recombinant protein candidates for a vaccine against malaria produced by P. vivax.
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Affiliation(s)
- Carolina López
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC), Bogotá, Colombia; PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Yoelis Yepes-Pérez
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC), Bogotá, Colombia; MSc Programme in Microbiology, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Natalia Hincapié-Escobar
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC) , Bogotá , Colombia
| | - Diana Díaz-Arévalo
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC), Bogotá, Colombia; Universidad de Ciencias Aplicadas y Ambientales (UDCA), Bogotá, Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC), Bogotá, Colombia; Basic Sciences Department, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
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