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Cohn IS, Wallbank BA, Haskins BE, O’Dea KM, Pardy RD, Shaw S, Merolle MI, Gullicksrud JA, Christian DA, Striepen B, Hunter CA. Intestinal cDC1s provide cues required for CD4+ T cell-mediated resistance to Cryptosporidium. J Exp Med 2024; 221:e20232067. [PMID: 38829369 PMCID: PMC11148471 DOI: 10.1084/jem.20232067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 04/01/2024] [Accepted: 05/06/2024] [Indexed: 06/05/2024] Open
Abstract
Cryptosporidium is an enteric pathogen and a prominent cause of diarrheal disease worldwide. Control of Cryptosporidium requires CD4+ T cells, but how protective CD4+ T cell responses are generated is poorly understood. Here, Cryptosporidium parasites that express MHCII-restricted model antigens were generated to understand the basis for CD4+ T cell priming and effector function. These studies revealed that parasite-specific CD4+ T cells are primed in the draining mesenteric lymph node but differentiate into Th1 cells in the gut to provide local parasite control. Although type 1 conventional dendritic cells (cDC1s) were dispensable for CD4+ T cell priming, they were required for CD4+ T cell gut homing and were a source of IL-12 at the site of infection that promoted local production of IFN-γ. Thus, cDC1s have distinct roles in shaping CD4+ T cell responses to an enteric infection: first, to promote gut homing from the mesLN, and second, to drive effector responses in the intestine.
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Affiliation(s)
- Ian S. Cohn
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Bethan A. Wallbank
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Breanne E. Haskins
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Keenan M. O’Dea
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Ryan D. Pardy
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Sebastian Shaw
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Maria I. Merolle
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jodi A. Gullicksrud
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - David A. Christian
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Boris Striepen
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Christopher A. Hunter
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
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2
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Haskins BE, Gullicksrud JA, Wallbank BA, Dumaine JE, Guérin A, Cohn IS, O'Dea KM, Pardy RD, Merolle MI, Shallberg LA, Hunter EN, Byerly JH, Smith EJ, Buenconsejo GY, McLeod BI, Christian DA, Striepen B, Hunter CA. Dendritic cell-mediated responses to secreted Cryptosporidium effectors promote parasite-specific CD8 + T cell responses. Mucosal Immunol 2024; 17:387-401. [PMID: 38508522 PMCID: PMC11193387 DOI: 10.1016/j.mucimm.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 03/04/2024] [Accepted: 03/05/2024] [Indexed: 03/22/2024]
Abstract
Cryptosporidium causes debilitating diarrheal disease in patients with primary and acquired defects in T cell function. However, it has been a challenge to understand how this infection generates T cell responses and how they mediate parasite control. Here, Cryptosporidium was engineered to express a parasite effector protein (MEDLE-2) that contains the major histocompatibility complex-I restricted SIINFEKL epitope which is recognized by T cell receptor transgenic OT-I(OVA-TCR-I) clusters of differentiation (CD)8+ T cells. These modified parasites induced expansion of endogenous SIINFEKL-specific and OT-I CD8+ T cells that were a source of interferon-gamma (IFN-γ) that could restrict growth of Cryptosporidium. This T cell response was dependent on the translocation of the effector and similar results were observed with another secreted parasite effector (rhoptry protein 1). Although infection and these translocated effector proteins are restricted to intestinal epithelial cells, type 1 conventional dendritic cells were required to generate CD8+ T cell responses to these model antigens. These data sets highlight Cryptosporidium effectors as potential targets of the immune system and suggest that crosstalk between enterocytes and type 1 conventional dendritic cells is crucial for CD8+ T cell responses to Cryptosporidium.
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Affiliation(s)
- Breanne E Haskins
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Jodi A Gullicksrud
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA; Cell Press, Cambridge, Massachusetts, USA
| | - Bethan A Wallbank
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Jennifer E Dumaine
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Amandine Guérin
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Ian S Cohn
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Keenan M O'Dea
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Ryan D Pardy
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Maria I Merolle
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Lindsey A Shallberg
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Emma N Hunter
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Jessica H Byerly
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Eleanor J Smith
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Gracyn Y Buenconsejo
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Briana I McLeod
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - David A Christian
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Boris Striepen
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
| | - Christopher A Hunter
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA.
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Baillou A, Tomal F, Chaumeil T, Barc C, Levern Y, Sausset A, Pezier T, Schulthess J, Peltier-Pain P, Laurent F, Lacroix-Lamandé S. Characterization of intestinal mononuclear phagocyte subsets in young ruminants at homeostasis and during Cryptosporidium parvum infection. Front Immunol 2024; 15:1379798. [PMID: 38756777 PMCID: PMC11096452 DOI: 10.3389/fimmu.2024.1379798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/03/2024] [Indexed: 05/18/2024] Open
Abstract
Introduction Cryptosporidiosis is a poorly controlled zoonosis caused by an intestinal parasite, Cryptosporidium parvum, with a high prevalence in livestock (cattle, sheep, and goats). Young animals are particularly susceptible to this infection due to the immaturity of their intestinal immune system. In a neonatal mouse model, we previously demonstrated the importance of the innate immunity and particularly of type 1 conventional dendritic cells (cDC1) among mononuclear phagocytes (MPs) in controlling the acute phase of C. parvum infection. These immune populations are well described in mice and humans, but their fine characterization in the intestine of young ruminants remained to be further explored. Methods Immune cells of the small intestinal Peyer's patches and of the distal jejunum were isolated from naive lambs and calves at different ages. This was followed by their fine characterization by flow cytometry and transcriptomic analyses (q-RT-PCR and single cell RNAseq (lamb cells)). Newborn animals were infected with C. parvum, clinical signs and parasite burden were quantified, and isolated MP cells were characterized by flow cytometry in comparison with age matched control animals. Results Here, we identified one population of macrophages and three subsets of cDC (cDC1, cDC2, and a minor cDC subset with migratory properties) in the intestine of lamb and calf by phenotypic and targeted gene expression analyses. Unsupervised single-cell transcriptomic analysis confirmed the identification of these four intestinal MP subpopulations in lamb, while highlighting a deeper diversity of cell subsets among monocytic and dendritic cells. We demonstrated a weak proportion of cDC1 in the intestine of highly susceptible newborn lambs together with an increase of these cells within the first days of life and in response to the infection. Discussion Considering cDC1 importance for efficient parasite control in the mouse model, one may speculate that the cDC1/cDC2 ratio plays also a key role for the efficient control of C. parvum in young ruminants. In this study, we established the first fine characterization of intestinal MP subsets in young lambs and calves providing new insights for comparative immunology of the intestinal MP system across species and for future investigations on host-Cryptosporidium interactions in target species.
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Affiliation(s)
- Ambre Baillou
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
- Phileo by Lesaffre, Marcq-en-Barœul, France
| | - Florian Tomal
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
| | - Thierry Chaumeil
- Unité Expérimentale (UE)1277 Plateforme d’Infectiologie Expérimentale (PFIE), INRAE Centre Val de Loire, Nouzilly, France
| | - Céline Barc
- Unité Expérimentale (UE)1277 Plateforme d’Infectiologie Expérimentale (PFIE), INRAE Centre Val de Loire, Nouzilly, France
| | - Yves Levern
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
| | - Alix Sausset
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
| | - Tiffany Pezier
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
| | | | | | - Fabrice Laurent
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
| | - Sonia Lacroix-Lamandé
- Unité Mixte de Recherches (UMR)1282 Infectiologie et Santé Publique, INRAE Centre Val de Loire, Université François Rabelais de Tours, Nouzilly, France
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Pardy RD, Wallbank BA, Striepen B, Hunter CA. Immunity to Cryptosporidium: insights into principles of enteric responses to infection. Nat Rev Immunol 2024; 24:142-155. [PMID: 37697084 DOI: 10.1038/s41577-023-00932-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2023] [Indexed: 09/13/2023]
Abstract
Cryptosporidium parasites replicate within intestinal epithelial cells and are an important cause of diarrhoeal disease in young children and in patients with primary and acquired defects in T cell function. This Review of immune-mediated control of Cryptosporidium highlights advances in understanding how intestinal epithelial cells detect this infection, the induction of innate resistance and the processes required for activation of T cell responses that promote parasite control. The development of a genetic tool set to modify Cryptosporidium combined with tractable mouse models provide new opportunities to understand the principles that govern the interface between intestinal epithelial cells and the immune system that mediate resistance to enteric pathogens.
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Affiliation(s)
- Ryan D Pardy
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Bethan A Wallbank
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Boris Striepen
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| | - Christopher A Hunter
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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Veshkini A, Dengler F, Bachmann L, Liermann W, Helm C, Ulrich R, Delling C, Kühn C, Hammon HM. Cryptosporidium parvum infection alters the intestinal mucosa transcriptome in neonatal calves: implications for immune function. Front Immunol 2024; 15:1351427. [PMID: 38318169 PMCID: PMC10839036 DOI: 10.3389/fimmu.2024.1351427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/05/2024] [Indexed: 02/07/2024] Open
Abstract
One of the leading causes of infectious diarrhea in newborn calves is the apicomplexan protozoan Cryptosporidium parvum (C. parvum). However, little is known about its immunopathogenesis. Using next generation sequencing, this study investigated the immune transcriptional response to C. parvum infection in neonatal calves. Neonatal male Holstein-Friesian calves were either orally infected (N = 5) or not (CTRL group, N = 5) with C. parvum oocysts (gp60 subtype IIaA15G2R1) at day 1 of life and slaughtered on day 7 after infection. Total RNA was extracted from the jejunal mucosa for short read. Differentially expressed genes (DEGs) between infected and CTRL groups were assessed using DESeq2 at a false discovery rate < 0.05. Infection did not affect plasma immunohematological parameters, including neutrophil, lymphocyte, monocyte, leucocyte, thrombocyte, and erythrocyte counts as well as hematocrit and hemoglobin concentration on day 7 post infection. The immune-related DEGs were selected according to the UniProt immune system process database and were used for gene ontology (GO) and pathway enrichment analysis using Cytoscape (v3.9.1). Based on GO analysis, DEGs annotated to mucosal immunity, recognizing and presenting antigens, chemotaxis of neutrophils, eosinophils, natural killer cells, B and T cells mediated by signaling pathways including toll like receptors, interleukins, tumor necrosis factor, T cell receptor, and NF-KB were upregulated, while markers of macrophages chemotaxis and cytosolic pattern recognition were downregulated. This study provides a holistic snapshot of immune-related pathways induced by C. parvum in calves, including novel and detailed feedback and feedforward regulatory mechanisms establishing the crosstalk between innate and adaptive immune response in neonate calves, which could be utilized further to develop new therapeutic strategies.
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Affiliation(s)
- Arash Veshkini
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
| | - Franziska Dengler
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Lisa Bachmann
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
- Faculty of Agriculture and Food Science, University of Applied Science Neubrandenburg, Neubrandenburg, Germany
| | - Wendy Liermann
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
| | - Christiane Helm
- Institutue for Veterinary Pathology, Leipzig University, Leipzig, Germany
| | - Reiner Ulrich
- Institutue for Veterinary Pathology, Leipzig University, Leipzig, Germany
| | - Cora Delling
- Institute of Veterinary Parasitology, Leipzig University, Leipzig, Germany
| | - Christa Kühn
- Research Institute for Farm Animal Biology, Institute of Genome Biology, Dummerstorf, Germany
- Agricultural and Environmental Faculty, University Rostock, Rostock, Germany
| | - Harald M. Hammon
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
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Allam NAT, Hamouda RAEF, Sedky D, Abdelsalam ME, El-Gawad MEHA, Hassan NMF, Aboelsoued D, Elmaaty AMA, Ibrahim MA, Taie HAA, Hakim AS, Desouky HM, Megeed KNA, Abdel-Hamid MS. Medical prospects of cryptosporidiosis in vivo control using biofabricated nanoparticles loaded with Cinnamomum camphora extracts by Ulva fasciata. Vet World 2024; 17:108-124. [PMID: 38406364 PMCID: PMC10884584 DOI: 10.14202/vetworld.2024.108-124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 11/28/2023] [Indexed: 02/27/2024] Open
Abstract
Background and Aim Global efforts are continuing to develop preparations against cryptosporidiosis. This study aimed to investigate the efficacy of biosynthesized Ulva fasciata loading Cinnamomum camphora oil extract on new zinc oxide nanoparticles (ZnONPs shorten to ZnNPs) and silver nanoparticles (AgNPs) as alternative treatments for Cryptosporidium parvum experimental infection in rats. Materials and Methods Oil extract was characterized by gas chromatography-mass spectrometry, loaded by U. fasciata on ionic-based ZnO and NPs, and then characterized by transmission electron microscopy, scanning electron microscopy, and X-ray diffraction. Biosafety and toxicity were investigated by skin tests. A total of 105 C. parvum oocysts/rat were used (n = 81, 2-3 W, 80-120 g, 9 male rats/group). Oocysts shedding was counted for 21 d. Doses of each preparation in addition to reference drug were administered daily for 7 d, starting on post-infection (PI) day (3). Nitazoxanide (100 mg) was used as the reference drug. After 3 weeks, the rats were sacrificed for postmortem examination and histopathological examination. Two blood samples/rat/group were collected on the 21st day. Ethylenediaminetetraacetic acid blood samples were also used for analysis of biochemistry, hematology, immunology, micronucleus prevalence, and chromosomal abnormalities. Results C. camphora leaves yielded 28.5 ± 0.3 g/kg oil and 20 phycocompounds were identified. Spherical and rod-shaped particles were detected at 10.47-30.98 nm and 18.83-38.39 nm, respectively. ZnNPs showed the earliest anti-cryptosporidiosis effect during 7-17 d PI. Other hematological, biochemical, immunological, histological, and genotoxicity parameters were significantly fruitful; hence, normalized pathological changes induced by infestation were observed in the NPs treatments groups against the infestation-free and Nitazoxanide treated group. Conclusion C. camphora, U. fasciata, ZnNPs, and AgNPs have refluxed the pathological effects of infection as well as positively improved host physiological condition by its anticryptosporidial immunostimulant regenerative effects with sufficient ecofriendly properties to be proposed as an alternative to traditional drugs, especially in individuals with medical reactions against chemical commercial drugs.
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Affiliation(s)
- Nesreen Allam Tantawy Allam
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, 33 El Buhouth Street, Dokki, P.O. Box: 12622, Giza, Cairo, Egypt
| | - Ragaa Abd El-Fatah Hamouda
- Department of Microbial Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, 5 Zone, Sadat City, Munofia, Egypt
| | - Doaa Sedky
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, 33 El Buhouth Street, Dokki, P.O. Box: 12622, Giza, Cairo, Egypt
| | - Mahinour Ezzeldin Abdelsalam
- Department of General Biology, Center of Basic Sciences, Misr University for Science and Technology, Al Motamayez District, 6 of October, Giza, Cairo, Egypt
| | | | - Noha Mahmoud Fahmy Hassan
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, 33 El Buhouth Street, Dokki, P.O. Box: 12622, Giza, Cairo, Egypt
| | - Dina Aboelsoued
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, 33 El Buhouth Street, Dokki, P.O. Box: 12622, Giza, Cairo, Egypt
| | - Amal M. Abou Elmaaty
- Department of Animal Reproduction and Artificial Insemination, Veterinary Research Institute, National Research Centre, 33 El Buhouth Street, Dokki, P.O. Box: 12622, Giza, Cairo, Egypt
| | - Muhammad A. Ibrahim
- Cytogenetics and Animal Cell Culture Lab., National Gene Bank, Agriculture Research Center, 9 Gamaa Street, Giza, Cairo, Egypt
| | - Hanan Anwar Aly Taie
- Department of Plant Biochemistry, Agriculture and Biological Researches Institute, National Research Centre, 33 El-Bohouth St. (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Cairo, Egypt
| | - Ashraf Samir Hakim
- Department of Microbiology and Immunology, Veterinary Research Institute, National Research Centre, 33 El Buhouth Street, Dokki, P.O. Box: 12622, Giza, Cairo, Egypt
| | - Hassan Mohamed Desouky
- Department of Animal Reproduction and Artificial Insemination, Veterinary Research Institute, National Research Centre, 33 El Buhouth Street, Dokki, P.O. Box: 12622, Giza, Cairo, Egypt
| | - Kadria Nasr Abdel Megeed
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, 33 El Buhouth Street, Dokki, P.O. Box: 12622, Giza, Cairo, Egypt
| | - Marwa Salah Abdel-Hamid
- Department of Microbial Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, 5 Zone, Sadat City, Munofia, Egypt
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7
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Chauhan R, Tiwari M, Chaudhary A, Sharan Thakur R, Pande V, Das J. Chemokines: A key driver for inflammation in protozoan infection. Int Rev Immunol 2023; 43:211-228. [PMID: 37980574 DOI: 10.1080/08830185.2023.2281566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 10/16/2023] [Indexed: 11/21/2023]
Abstract
Chemokines belong to the group of small proteins within the cytokine family having strong chemo-attractant properties. In most cases, the strong immuno-modulatory role of chemokines is crucial for generating the immune response against pathogens in various protozoan diseases. In this review, we have given a brief update on the classification, characterization, homeostasis, transcellular migration, and immuno-modulatory role of chemokines. Here we will evaluate the potential role of chemokines and their regulation in various protozoan diseases. There is a significant direct relationship between parasitic infection and the recruitment of effector cells of the immune response. Chemokines play an indispensable role in mediating several defense mechanisms against infection, such as leukocyte recruitment and the generation of innate and cell-mediated immunity that aids in controlling/eliminating the pathogen. This process is controlled by the chemotactic movement of chemokines induced as a primary host immune response. We have also addressed that chemokine expressions during infection are time-dependent and orchestrated in a systematic pattern that ultimately assists in generating a protective immune response. Taken together, this review provides a systematic understanding of the complexity of chemokines profiles during protozoan disease conditions and the rationale of targeting chemokines for the development of therapeutic strategies.
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Affiliation(s)
- Rubika Chauhan
- Parasite-Host Biology, National Institute of Malaria Research, Dwarka, New Delhi, India
| | - Mrinalini Tiwari
- Parasite-Host Biology, National Institute of Malaria Research, Dwarka, New Delhi, India
| | - Amrendra Chaudhary
- Parasite-Host Biology, National Institute of Malaria Research, Dwarka, New Delhi, India
| | - Reva Sharan Thakur
- Parasite-Host Biology, National Institute of Malaria Research, Dwarka, New Delhi, India
| | - Veena Pande
- Biotechnology Department, Kumaun University, Nainital, India
| | - Jyoti Das
- Parasite-Host Biology, National Institute of Malaria Research, Dwarka, New Delhi, India
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8
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Cohn IS, Wallbank BA, Haskins BE, O’Dea KM, Pardy RD, Shaw S, Merolle MI, Gullicksrud JA, Christian DA, Striepen B, Hunter CA. Intestinal cDC1s provide IL-12 dependent and independent functions required for CD4 + T cell-mediated resistance to Cryptosporidium. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.11.566669. [PMID: 38014026 PMCID: PMC10680586 DOI: 10.1101/2023.11.11.566669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Cryptosporidium is an enteric pathogen that is a prominent cause of diarrheal disease. Control of this infection requires CD4+ T cells, though the processes that lead to T cell-mediated resistance have been difficult to assess. Here, Cryptosporidium parasites that express MHCII-restricted model antigens were generated to dissect the early events that influence CD4+ T cell priming and effector function. These studies highlight that parasite-specific CD4+ T cells are primed in the draining mesenteric lymph node (mesLN) and differentiate into Th1 cells in the gut, where they mediate IFN-γ-dependent control of the infection. Although type 1 conventional dendritic cells (cDC1s) were not required for initial priming of CD4+ T cells, cDC1s were required for CD4+ T cell expansion and gut homing. cDC1s were also a major source of IL-12 that was not required for priming but promoted full differentiation of CD4+ T cells and local production of IFN-γ. Together, these studies reveal distinct roles for cDC1s in shaping CD4+ T cell responses to enteric infection: first to drive early expansion in the mesLN and second to drive effector responses in the gut.
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Affiliation(s)
- Ian S. Cohn
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Bethan A. Wallbank
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Breanne E. Haskins
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Keenan M. O’Dea
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Ryan D. Pardy
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Sebastian Shaw
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Maria I. Merolle
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jodi A. Gullicksrud
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - David A. Christian
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Boris Striepen
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Christopher A. Hunter
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
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9
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Barten LJC, Zuurveld M, Faber J, Garssen J, Klok T. Oral immunotherapy as a curative treatment for food-allergic preschool children: Current evidence and potential underlying mechanisms. Pediatr Allergy Immunol 2023; 34:e14043. [PMID: 38010006 DOI: 10.1111/pai.14043] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/10/2023] [Accepted: 10/19/2023] [Indexed: 11/29/2023]
Abstract
The worldwide rising prevalence of food allergy is a major public health concern. Standard care consists of allergen avoidance and rescue medication upon accidental exposure. Oral immunotherapy (OIT) is increasingly being studied as a treatment option. Although desensitization (an increased reaction threshold) is often achieved during OIT, sustained unresponsiveness (SU; clinical nonreactivity after finishing OIT) is not achieved in most patients. A few studies have investigated the effectiveness of OIT in children younger than 4 years of age (early = e-OIT) and have shown a much more favorable outcome in terms of SU development. Together with food allergy prevention studies, which have demonstrated high efficacy of early oral allergen exposure, the outcomes of e-OIT studies indicate an early-life window of opportunity to achieve SU, allowing unrestricted dietary intake. However, the underlying mechanism of the high effectiveness of e-OIT is not understood yet. Both cohort and OIT studies indicate early-life immune plasticity. An immature food-allergic response in the first years of life seems to be a major driver of this immune plasticity, along with a higher tolerogenic immunological state. Allergy maturation can likely be disrupted effectively by early intervention, preventing the development of persistent food allergy. Upcoming studies will provide important additional data on the safety, feasibility, and effectiveness of e-OIT. Combined with immune mechanistic studies, this should inform the implementation of e-OIT.
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Affiliation(s)
- Lieke J C Barten
- Pediatric Allergy Treatment Center, Deventer Hospital, Deventer, The Netherlands
- Utrecht Institute for Pharmaceutical Sciences, Division Pharmacology, Utrecht University, Utrecht, The Netherlands
| | - Marit Zuurveld
- Utrecht Institute for Pharmaceutical Sciences, Division Pharmacology, Utrecht University, Utrecht, The Netherlands
| | - Joyce Faber
- Pediatric Allergy Treatment Center, Deventer Hospital, Deventer, The Netherlands
| | - Johan Garssen
- Utrecht Institute for Pharmaceutical Sciences, Division Pharmacology, Utrecht University, Utrecht, The Netherlands
| | - Ted Klok
- Pediatric Allergy Treatment Center, Deventer Hospital, Deventer, The Netherlands
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10
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Haskins BE, Gullicksrud JA, Wallbank BA, Dumaine JE, Guérin A, Cohn IS, O'Dea KM, Pardy RD, Merolle MI, Shallberg LA, Hunter EN, Byerly JH, Smith EJ, Buenconsejo GY, McLeod BI, Christian DA, Striepen B, Hunter CA. Dendritic cell-mediated responses to secreted Cryptosporidium effectors are required for parasite-specific CD8 + T cell responses. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.16.553566. [PMID: 37645924 PMCID: PMC10462095 DOI: 10.1101/2023.08.16.553566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Cryptosporidium causes debilitating diarrheal disease in patients with primary and acquired defects in T cell function. However, it has been a challenge to understand how this infection generates T cell responses and how they mediate parasite control. Here, Cryptosporidium was engineered to express a parasite effector protein (MEDLE-2) that contains the MHC-I restricted SIINFEKL epitope which is recognized by TCR transgenic OT-I CD8 + T cells. These modified parasites induced expansion of endogenous SIINFEKL-specific and OT-I CD8 + T cells that were a source of IFN-γ that could restrict growth of Cryptosporidium . This T cell response was dependent on the translocation of the effector and similar results were observed with another secreted parasite effector (ROP1). Although infection and these translocated effector proteins are restricted to intestinal epithelial cells (IEC), type I dendritic cells (cDC1) were required to generate CD8 + T cell responses to these model antigens. These data sets highlight Cryptosporidium effectors as targets of the immune system and suggest that crosstalk between enterocytes and cDC1s is crucial for CD8 + T cell responses to Cryptosporidium .
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11
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Funkhouser-Jones LJ, Xu R, Wilke G, Fu Y, Schriefer LA, Makimaa H, Rodgers R, Kennedy EA, VanDussen KL, Stappenbeck TS, Baldridge MT, Sibley LD. Microbiota-produced indole metabolites disrupt mitochondrial function and inhibit Cryptosporidium parvum growth. Cell Rep 2023; 42:112680. [PMID: 37384526 PMCID: PMC10530208 DOI: 10.1016/j.celrep.2023.112680] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 05/08/2023] [Accepted: 06/07/2023] [Indexed: 07/01/2023] Open
Abstract
Cryptosporidiosis is a leading cause of life-threatening diarrhea in young children in resource-poor settings. To explore microbial influences on susceptibility, we screened 85 microbiota-associated metabolites for their effects on Cryptosporidium parvum growth in vitro. We identify eight inhibitory metabolites in three main classes: secondary bile salts/acids, a vitamin B6 precursor, and indoles. Growth restriction of C. parvum by indoles does not depend on the host aryl hydrocarbon receptor (AhR) pathway. Instead, treatment impairs host mitochondrial function and reduces total cellular ATP, as well as directly reducing the membrane potential in the parasite mitosome, a degenerate mitochondria. Oral administration of indoles, or reconstitution of the gut microbiota with indole-producing bacteria, delays life cycle progression of the parasite in vitro and reduces the severity of C. parvum infection in mice. Collectively, these findings indicate that microbiota metabolites impair mitochondrial function and contribute to colonization resistance to Cryptosporidium infection.
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Affiliation(s)
- Lisa J Funkhouser-Jones
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Rui Xu
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Georgia Wilke
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Yong Fu
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Lawrence A Schriefer
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Heyde Makimaa
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Rachel Rodgers
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Elizabeth A Kennedy
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Kelli L VanDussen
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
| | - Thaddeus S Stappenbeck
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
| | - Megan T Baldridge
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - L David Sibley
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA.
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12
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Graham ML, Li M, Gong AY, Deng S, Jin K, Wang S, Chen XM. Cryptosporidium parvum hijacks a host's long noncoding RNA U90926 to evade intestinal epithelial cell-autonomous antiparasitic defense. Front Immunol 2023; 14:1205468. [PMID: 37346046 PMCID: PMC10280636 DOI: 10.3389/fimmu.2023.1205468] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 05/16/2023] [Indexed: 06/23/2023] Open
Abstract
Cryptosporidium is a zoonotic apicomplexan parasite that infects the gastrointestinal epithelium and other mucosal surfaces in humans. It is an important opportunistic pathogen in AIDS patients and a leading cause of infectious diarrhea and diarrheal-related death in children worldwide. The intestinal epithelial cells provide the first line of defense against Cryptosporidium infection and play a central role in activating and regulating the host's antiparasitic response. Increasing evidence suggests that long noncoding RNAs (lncRNAs) participate in host-pathogen interactions and play a regulatory role in the pathogenesis of diseases but the underlying molecular mechanisms are not fully understood. We previously identified a panel of host lncRNAs that are upregulated in murine intestinal epithelial cells following Cryptosporidium infection, including U90926. We demonstrate here that U90926 is acting in a pro-parasitic manner in regulating intestinal epithelial cell-autonomous antiparasitic defense. Inhibition of U90926 resulted in a decreased infection burden of the parasite while overexpression of U90926 showed an increase in infection burden in cultured murine intestinal epithelial cells. Induction of U90926 suppressed transcription of epithelial defense genes involved in controlling Cryptosporidium infection through epigenetic mechanisms. Specifically, transcription of Aebp1, which encodes the Aebp1 protein, a potent modulator of inflammation and NF-κB signaling, was suppressed by U90926. Gain- or loss-of-function of Aebp1 in the host's epithelial cells caused reciprocal alterations in the infection burden of the parasite. Interestingly, Cryptosporidium carries the Cryptosporidium virus 1 (CSpV1), a double-stranded (ds) RNA virus coding two dsRNA fragments, CSpV1-dsRdRp and CSpV1-dsCA. Both CSpV1-dsRdRp and CSpV1-dsCA can be delivered into infected cells as previously reported. We found that cells transfected with in vitro transcribed CSpV1-dsCA or CSpV1-dsRdRp displayed an increased level of U90926, suggesting that CSpV1 is involved in the upregulation of U90926 during Cryptosporidium infection. Our study highlights a new strategy by Cryptosporidium to hijack a host lncRNA to suppress epithelial cell-autonomous antiparasitic defense and allow for a robust infection.
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Affiliation(s)
- Marion L. Graham
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL, United States
| | - Min Li
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, United States
| | - Ai-Yu Gong
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL, United States
| | - Silu Deng
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL, United States
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, United States
| | - Kehua Jin
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL, United States
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Hubei University of Science and Technology, Xianning, Hubei, China
| | - Shuhong Wang
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL, United States
| | - Xian-Ming Chen
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL, United States
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13
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Funkhouser-Jones LJ, Xu R, Wilke G, Fu Y, Shriefer LA, Makimaa H, Rodgers R, Kennedy EA, VanDussen KL, Stappenbeck TS, Baldridge MT, Sibley LD. Microbiota produced indole metabolites disrupt host cell mitochondrial energy production and inhibit Cryptosporidium parvum growth. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.25.542157. [PMID: 37292732 PMCID: PMC10245909 DOI: 10.1101/2023.05.25.542157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cryptosporidiosis is a leading cause of life-threatening diarrhea in young children in resource-poor settings. Susceptibility rapidly declines with age, associated with changes in the microbiota. To explore microbial influences on susceptibility, we screened 85 microbiota- associated metabolites enriched in the adult gut for their effects on C. parvum growth in vitro. We identified eight inhibitory metabolites in three main classes: secondary bile salts/acids, a vitamin B 6 precursor, and indoles. Growth restriction of C. parvum by indoles did not depend on the host aryl hydrocarbon receptor (AhR) pathway. Instead, treatment impaired host mitochondrial function and reduced total cellular ATP, as well as directly reduced the membrane potential in the parasite mitosome, a degenerate mitochondria. Oral administration of indoles, or reconstitution of the gut microbiota with indole producing bacteria, delayed life cycle progression of the parasite in vitro and reduced severity of C. parvum infection in mice. Collectively, these findings indicate that microbiota metabolites contribute to colonization resistance to Cryptosporidium infection.
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Affiliation(s)
- Lisa J. Funkhouser-Jones
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA
| | - Rui Xu
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA
| | - Georgia Wilke
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA
| | - Yong Fu
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA
| | - Lawrence A. Shriefer
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St Louis, MO, USA
| | - Heyde Makimaa
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St Louis, MO, USA
| | - Rachel Rodgers
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St Louis, MO, USA
| | - Elizabeth A. Kennedy
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St Louis, MO, USA
| | - Kelli L. VanDussen
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO, USA
| | - Thaddeus S. Stappenbeck
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO, USA
| | - Megan T. Baldridge
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St Louis, MO, USA
| | - L. David Sibley
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA
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14
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Saraav I, Sibley LD. Dendritic Cells and Cryptosporidium: From Recognition to Restriction. Microorganisms 2023; 11:1056. [PMID: 37110479 PMCID: PMC10144555 DOI: 10.3390/microorganisms11041056] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/29/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Host immune responses are required for the efficient control of cryptosporidiosis. Immunity against Cryptosporidium infection has been best studied in mice, where it is mediated by both innate and adaptive immune responses. Dendritic cells are the key link between innate and adaptive immunity and participate in the defense against Cryptosporidium infection. While the effector mechanism varies, both humans and mice rely on dendritic cells for sensing parasites and restricting infection. Recently, the use of mouse-adapted strains C. parvum and mouse-specific strain C. tyzzeri have provided tractable systems to study the role of dendritic cells in mice against this parasite. In this review, we provide an overview of recent advances in innate immunity acting during infection with Cryptosporidium with a major focus on the role of dendritic cells in the intestinal mucosa. Further work is required to understand the role of dendritic cells in the activation of T cells and to explore associated molecular mechanisms. The identification of Cryptosporidium antigen involved in the activation of Toll-like receptor signaling in dendritic cells during infection is also a matter of future study. The in-depth knowledge of immune responses in cryptosporidiosis will help develop targeted prophylactic and therapeutic interventions.
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Affiliation(s)
| | - L. David Sibley
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA
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15
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Deng S, He W, Gong AY, Li M, Wang Y, Xia Z, Zhang XT, Huang Pacheco AS, Naqib A, Jenkins M, Swanson PC, Drescher KM, Strauss-Soukup JK, Belshan M, Chen XM. Cryptosporidium uses CSpV1 to activate host type I interferon and attenuate antiparasitic defenses. Nat Commun 2023; 14:1456. [PMID: 36928642 PMCID: PMC10020566 DOI: 10.1038/s41467-023-37129-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 03/02/2023] [Indexed: 03/18/2023] Open
Abstract
Cryptosporidium infects gastrointestinal epithelium and is a leading cause of infectious diarrhea and diarrheal-related death in children worldwide. There are no vaccines and no fully effective therapy available for the infection. Type II and III interferon (IFN) responses are important determinants of susceptibility to infection but the role for type I IFN response remains obscure. Cryptosporidium parvum virus 1 (CSpV1) is a double-stranded RNA (dsRNA) virus harbored by Cryptosporidium spp. Here we show that intestinal epithelial conditional Ifnar1-/- mice (deficient in type I IFN receptor) are resistant to C. parvum infection. CSpV1-dsRNAs are delivered into host cells and trigger type I IFN response in infected cells. Whereas C. parvum infection attenuates epithelial response to IFN-γ, loss of type I IFN signaling or inhibition of CSpV1-dsRNA delivery can restore IFN-γ-mediated protective response. Our findings demonstrate that type I IFN signaling in intestinal epithelial cells is detrimental to intestinal anti-C. parvum defense and Cryptosporidium uses CSpV1 to activate type I IFN signaling to evade epithelial antiparasitic response.
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Affiliation(s)
- Silu Deng
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL, USA
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
| | - Wei He
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
| | - Ai-Yu Gong
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL, USA
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
| | - Min Li
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
| | - Yang Wang
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
| | - Zijie Xia
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
| | - Xin-Tiang Zhang
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
| | - Andrew S Huang Pacheco
- Pediatric Gastroenterology, Children's Hospital & Medical Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Ankur Naqib
- Department of Anatomy and Cell Biology, Rush University Medical Center, Chicago, IL, USA
| | - Mark Jenkins
- Animal Parasitic Diseases Laboratory, Agricultural Research Service, the United States Department of Agriculture, Beltsville, MD, USA
| | - Patrick C Swanson
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
| | - Kristen M Drescher
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
| | - Juliane K Strauss-Soukup
- Department of Chemistry and Biochemistry, Creighton University College of Arts and Sciences, Omaha, NE, USA
| | - Michael Belshan
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
| | - Xian-Ming Chen
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL, USA.
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA.
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16
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Mead JR. Early immune and host cell responses to Cryptosporidium infection. FRONTIERS IN PARASITOLOGY 2023; 2:1113950. [PMID: 37325809 PMCID: PMC10269812 DOI: 10.3389/fpara.2023.1113950] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Cryptosporidium spp. are opportunistic protozoan parasites that infect epithelial cells of the small intestine and cause diarrheal illness in both immunocompetent and immunodeficient individuals. These infections may be more severe in immunocompromised individuals and young children, especially in children under 2 in developing countries. The parasite has a global distribution and is an important cause of childhood diarrhea where it may result in cognitive impairment and growth deficits. Current therapies are limited with nitazoxanide being the only FDA-approved drug. However, it is not efficacious in immunocompromised patients. Additionally, there are no vaccines for cryptosporidiosis available. While acquired immunity is needed to clear Cryptosporidium parasites completely, innate immunity and early responses to infection are important in keeping the infection in check so that adaptive responses have time to develop. Infection is localized to the epithelial cells of the gut. Therefore, host cell defenses are important in the early response to infection and may be triggered through toll receptors or inflammasomes which induce a number of signal pathways, interferons, cytokines, and other immune mediators. Chemokines and chemokine receptors are upregulated which recruit immune cells such neutrophils, NK cells, and macrophages to the infection site to help in host cell defense as well as dendritic cells that are an important bridge between innate and adaptive responses. This review will focus on the host cell responses and the immune responses that are important in the early stages of infection.
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Affiliation(s)
- Jan R. Mead
- Department of Pediatrics, Children’s Healthcare Organization of Atlanta, Emory University, Atlanta, GA, United States
- Atlanta Veterans Affairs Medical Center, Decatur, GA, United States
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17
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Stromal regulation of the intestinal barrier. Mucosal Immunol 2023; 16:221-231. [PMID: 36708806 DOI: 10.1016/j.mucimm.2023.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/27/2022] [Accepted: 01/12/2023] [Indexed: 01/26/2023]
Abstract
The intestinal barrier is a complex structure that allows the absorption of nutrients while ensuring protection against intestinal pathogens and balanced immunity. The development and maintenance of a functional intestinal barrier is a multifactorial process that is only partially understood. Here we review novel findings on the emerging role of mesenchymal cells in this process using insights gained from lineage tracing approaches, Cre-based gene deletion, and single-cell transcriptomics. The current evidence points toward a key organizer role for distinct mesenchymal lineages in intestinal development and homeostasis, regulating both epithelial and immune components of the intestinal barrier. We further discuss recent findings on functional mesenchymal heterogeneity and implications for intestinal regeneration and inflammatory intestinal pathologies.
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18
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Sardinha-Silva A, Alves-Ferreira EVC, Grigg ME. Intestinal immune responses to commensal and pathogenic protozoa. Front Immunol 2022; 13:963723. [PMID: 36211380 PMCID: PMC9533738 DOI: 10.3389/fimmu.2022.963723] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 08/15/2022] [Indexed: 11/17/2022] Open
Abstract
The physical barrier of the intestine and associated mucosal immunity maintains a delicate homeostatic balance between the host and the external environment by regulating immune responses to commensals, as well as functioning as the first line of defense against pathogenic microorganisms. Understanding the orchestration and characteristics of the intestinal mucosal immune response during commensal or pathological conditions may provide novel insights into the mechanisms underlying microbe-induced immunological tolerance, protection, and/or pathogenesis. Over the last decade, our knowledge about the interface between the host intestinal mucosa and the gut microbiome has been dominated by studies focused on bacterial communities, helminth parasites, and intestinal viruses. In contrast, specifically how commensal and pathogenic protozoa regulate intestinal immunity is less well studied. In this review, we provide an overview of mucosal immune responses induced by intestinal protozoa, with a major focus on the role of different cell types and immune mediators triggered by commensal (Blastocystis spp. and Tritrichomonas spp.) and pathogenic (Toxoplasma gondii, Giardia intestinalis, Cryptosporidium parvum) protozoa. We will discuss how these various protozoa modulate innate and adaptive immune responses induced in experimental models of infection that benefit or harm the host.
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19
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Yang Z, Liu X, Wu Y, Peng J, Wei H. Effect of the Microbiome on Intestinal Innate Immune Development in Early Life and the Potential Strategy of Early Intervention. Front Immunol 2022; 13:936300. [PMID: 35928828 PMCID: PMC9344006 DOI: 10.3389/fimmu.2022.936300] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 06/23/2022] [Indexed: 12/15/2022] Open
Abstract
Early life is a vital period for mammals to be colonized with the microbiome, which profoundly influences the development of the intestinal immune function. For neonates to resist pathogen infection and avoid gastrointestinal illness, the intestinal innate immune system is critical. Thus, this review summarizes the development of the intestinal microbiome and the intestinal innate immune barrier, including the intestinal epithelium and immune cells from the fetal to the weaning period. Moreover, the impact of the intestinal microbiome on innate immune development and the two main way of early-life intervention including probiotics and fecal microbiota transplantation (FMT) also are discussed in this review. We hope to highlight the crosstalk between early microbial colonization and intestinal innate immunity development and offer some information for early intervention.
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Affiliation(s)
- Zhipeng Yang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xiangchen Liu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yanting Wu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
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20
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Jacob JM, Di Carlo SE, Stzepourginski I, Lepelletier A, Ndiaye PD, Varet H, Legendre R, Kornobis E, Benabid A, Nigro G, Peduto L. PDGFRα-induced stromal maturation is required to restrain postnatal intestinal epithelial stemness and promote defense mechanisms. Cell Stem Cell 2022; 29:856-868.e5. [PMID: 35523143 DOI: 10.1016/j.stem.2022.04.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 01/18/2022] [Accepted: 04/07/2022] [Indexed: 11/03/2022]
Abstract
After birth, the intestine undergoes major changes to shift from an immature proliferative state to a functional intestinal barrier. By combining inducible lineage tracing and transcriptomics in mouse models, we identify a prodifferentiation PDGFRαHigh intestinal stromal lineage originating from postnatal LTβR+ perivascular stromal progenitors. The genetic blockage of this lineage increased the intestinal stem cell pool while decreasing epithelial and immune maturation at weaning age, leading to reduced postnatal growth and dysregulated repair responses. Ablating PDGFRα in the LTBR stromal lineage demonstrates that PDGFRα has a major impact on the lineage fate and function, inducing a transcriptomic switch from prostemness genes, such as Rspo3 and Grem1, to prodifferentiation factors, including BMPs, retinoic acid, and laminins, and on spatial organization within the crypt-villus and repair responses. Our results show that the PDGFRα-induced transcriptomic switch in intestinal stromal cells is required in the first weeks after birth to coordinate postnatal intestinal maturation and function.
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Affiliation(s)
- Jean-Marie Jacob
- Stroma, Inflammation & Tissue Repair Unit, Institut Pasteur, Université Paris Cité, INSERM U1224, Paris, France
| | - Selene E Di Carlo
- Stroma, Inflammation & Tissue Repair Unit, Institut Pasteur, Université Paris Cité, INSERM U1224, Paris, France
| | - Igor Stzepourginski
- Stroma, Inflammation & Tissue Repair Unit, Institut Pasteur, Université Paris Cité, INSERM U1224, Paris, France
| | - Anthony Lepelletier
- Stroma, Inflammation & Tissue Repair Unit, Institut Pasteur, Université Paris Cité, INSERM U1224, Paris, France
| | - Papa Diogop Ndiaye
- Stroma, Inflammation & Tissue Repair Unit, Institut Pasteur, Université Paris Cité, INSERM U1224, Paris, France
| | - Hugo Varet
- Transcriptome and Epigenome Platform-Biomics Pole, Institut Pasteur, Université Paris Cité, Paris, France; Bioinformatics and Biostatistics Hub, Institut Pasteur, Université Paris Cité, Paris, France
| | - Rachel Legendre
- Transcriptome and Epigenome Platform-Biomics Pole, Institut Pasteur, Université Paris Cité, Paris, France; Bioinformatics and Biostatistics Hub, Institut Pasteur, Université Paris Cité, Paris, France
| | - Etienne Kornobis
- Transcriptome and Epigenome Platform-Biomics Pole, Institut Pasteur, Université Paris Cité, Paris, France; Bioinformatics and Biostatistics Hub, Institut Pasteur, Université Paris Cité, Paris, France
| | - Adam Benabid
- Stroma, Inflammation & Tissue Repair Unit, Institut Pasteur, Université Paris Cité, INSERM U1224, Paris, France
| | - Giulia Nigro
- Stroma, Inflammation & Tissue Repair Unit, Institut Pasteur, Université Paris Cité, INSERM U1224, Paris, France
| | - Lucie Peduto
- Stroma, Inflammation & Tissue Repair Unit, Institut Pasteur, Université Paris Cité, INSERM U1224, Paris, France.
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21
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Gibson AR, Sateriale A, Dumaine JE, Engiles JB, Pardy RD, Gullicksrud JA, O’Dea KM, Doench JG, Beiting DP, Hunter CA, Striepen B. A genetic screen identifies a protective type III interferon response to Cryptosporidium that requires TLR3 dependent recognition. PLoS Pathog 2022; 18:e1010003. [PMID: 35584177 PMCID: PMC9154123 DOI: 10.1371/journal.ppat.1010003] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 05/31/2022] [Accepted: 04/11/2022] [Indexed: 11/18/2022] Open
Abstract
Cryptosporidium is a leading cause of severe diarrhea and diarrheal-related death in children worldwide. As an obligate intracellular parasite, Cryptosporidium relies on intestinal epithelial cells to provide a niche for its growth and survival, but little is known about the contributions that the infected cell makes to this relationship. Here we conducted a genome wide CRISPR/Cas9 knockout screen to discover host genes that influence Cryptosporidium parvum infection and/or host cell survival. Gene enrichment analysis indicated that the host interferon response, glycosaminoglycan (GAG) and glycosylphosphatidylinositol (GPI) anchor biosynthesis are important determinants of susceptibility to C. parvum infection and impact on the viability of host cells in the context of parasite infection. Several of these pathways are linked to parasite attachment and invasion and C-type lectins on the surface of the parasite. Evaluation of transcript and protein induction of innate interferons revealed a pronounced type III interferon response to Cryptosporidium in human cells as well as in mice. Treatment of mice with IFNλ reduced infection burden and protected immunocompromised mice from severe outcomes including death, with effects that required STAT1 signaling in the enterocyte. Initiation of this type III interferon response was dependent on sustained intracellular growth and mediated by the pattern recognition receptor TLR3. We conclude that host cell intrinsic recognition of Cryptosporidium results in IFNλ production critical to early protection against this infection.
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Affiliation(s)
- Alexis R. Gibson
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Adam Sateriale
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Jennifer E. Dumaine
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Julie B. Engiles
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- Department of Pathobiology, New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Ryan D. Pardy
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Jodi A. Gullicksrud
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Keenan M. O’Dea
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - John G. Doench
- Genetic Perturbation Platform, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
| | - Daniel P. Beiting
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Christopher A. Hunter
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Boris Striepen
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
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22
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Certad G. Is Cryptosporidium a hijacker able to drive cancer cell proliferation? Food Waterborne Parasitol 2022; 27:e00153. [PMID: 35498550 PMCID: PMC9044164 DOI: 10.1016/j.fawpar.2022.e00153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/23/2022] [Accepted: 04/11/2022] [Indexed: 12/19/2022] Open
Abstract
The pathophysiological mechanisms of Cryptosporidium infection are multifactorial and not completely understood. Some advances achieved recently revealed that the infection by Cryptosporidium parvum induces cytoskeleton remodeling and actin reorganization through the implication of several intracellular signals involving, for example, PI3K, Src, Cdc42 and GTPases. It has also been reported that the infection by C. parvum leads to the activation of NF-κβ, known to induce anti-apoptotic mechanisms and to transmit oncogenic signals to epithelial cells. Despite the growing evidence about the hijacking of cellular pathways, potentially being involved in cancer onset, this information has rarely been linked to the tumorigenic potential of the parasite. However, several evidences support an association between Cryptosporidium infection and the development of digestive neoplasia. To explore the dynamics of Cryptosporidium infection, an animal model of cryptosporidiosis using corticoid dexamethasone-treated adult SCID (severe combined immunodeficiency) mice, orally infected with C. parvum or Cryptosporidium muris oocysts was implemented. C. parvum-infected animals developed digestive adenocarcinoma. When mechanisms involved in this neoplastic process were explored, the pivotal role of the Wnt pathway together with the alteration of the cytoskeleton was confirmed. Recently, a microarray assay allowed the detection of cancer-promoting genes and pathways highly up regulated in the group of C. parvum infected animals when compared to non-infected controls. Moreover, different human cases/control studies reported significant higher prevalence of Cryptosporidium infection among patients with recently diagnosed colon cancer before any treatment when compared to the control group (patients without colon neoplasia but with persistent digestive symptoms). These results suggest that Cryptosporidium is a potential oncogenic agent involved in cancer development beyond the usual suspects. If Cryptosporidium is able to hijack signal transduction, then is very likely that this contributes to transformation of its host cell. More research in the field is required in order to identify mechanisms and molecular factors involved in this process and to develop effective treatment interventions.
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23
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Dual transcriptomics to determine interferon-gamma independent host response to intestinal Cryptosporidium parvum infection. Infect Immun 2021; 90:e0063821. [PMID: 34928716 PMCID: PMC8852703 DOI: 10.1128/iai.00638-21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Animals with a chronic infection of the parasite Toxoplasma gondii are protected against lethal secondary infection with other pathogens. Our group previously determined that soluble T. gondii antigens (STAg) can mimic this protection and be used as a treatment against several lethal pathogens. Because treatments are limited for the parasite Cryptosporidium parvum, we tested STAg as a C. parvum therapeutic. We determined that STAg treatment reduced C. parvum Iowa II oocyst shedding in gamma interferon knockout (IFN-γ-KO) mice. Murine intestinal sections were then sequenced to define the IFN-γ-independent transcriptomic response to C. parvum infection. Gene Ontology and transcript abundance comparisons showed host immune response and metabolism changes. Transcripts for type I interferon-responsive genes were more abundant in C. parvum-infected mice treated with STAg. Comparisons between phosphate-buffered saline (PBS) and STAg treatments showed no significant differences in C. parvum gene expression. C. parvum transcript abundance was highest in the ileum and mucin-like glycoproteins and the GDP-fucose transporter were among the most abundant. These results will assist the field in determining both host- and parasite-directed future therapeutic targets.
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24
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Li T, Liu H, Jiang N, Wang Y, Wang Y, Zhang J, Shen Y, Cao J. Comparative proteomics reveals Cryptosporidium parvum manipulation of the host cell molecular expression and immune response. PLoS Negl Trop Dis 2021; 15:e0009949. [PMID: 34818332 PMCID: PMC8612570 DOI: 10.1371/journal.pntd.0009949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/25/2021] [Indexed: 02/01/2023] Open
Abstract
Cryptosporidium is a life-threating protozoan parasite belonging to the phylum Apicomplexa, which mainly causes gastroenteritis in a variety of vertebrate hosts. Currently, there is a re-emergence of Cryptosporidium infection; however, no fully effective drug or vaccine is available to treat Cryptosporidiosis. In the present study, to better understand the detailed interaction between the host and Cryptosporidium parvum, a large-scale label-free proteomics study was conducted to characterize the changes to the proteome induced by C. parvum infection. Among 4406 proteins identified, 121 proteins were identified as differentially abundant (> 1.5-fold cutoff, P < 0.05) in C. parvum infected HCT-8 cells compared with uninfected cells. Among them, 67 proteins were upregulated, and 54 proteins were downregulated at 36 h post infection. Analysis of the differentially abundant proteins revealed an interferon-centered immune response of the host cells against C. parvum infection and extensive inhibition of metabolism-related enzymes in the host cells caused by infection. Several proteins were further verified using quantitative real-time reverse transcription polymerase chain reaction and western blotting. This systematic analysis of the proteomics of C. parvum-infected HCT-8 cells identified a wide range of functional proteins that participate in host anti-parasite immunity or act as potential targets during infection, providing new insights into the molecular mechanism of C. parvum infection. Cryptosporidium parvum is an emerging zoonotic pathogen transmitted via the fecal–oral route, and is considered a leading cause of moderate-to-severe diarrheal disease in young children in resource limited areas. After infection, C. parvum parasitizes intestinal epithelial cells and evokes an inflammatory immune response, leading to severe damage of the intestinal mucosa. The infection can be lethal to immunosuppressed individuals. However, no fully effective drug or vaccine is available for cryptosporidiosis, and the pathogenesis and immune mechanisms during C. parvum infection are obscure. Thus, an in-depth understanding of host-parasite interaction is needed. Hence, we established a C. parvum-infected HCT-8 cell model and performed comparative quantitative proteomic analyses to profile global host-parasite interactions and determine the molecular mechanisms that are activated during infection, aiming to offer new insights into the treatment of Cryptosporidium.
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Affiliation(s)
- Teng Li
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; WHO Collaborating Center for Tropical Diseases, Shanghai, China
- The School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hua Liu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Nan Jiang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Yiluo Wang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Ying Wang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Jing Zhang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Yujuan Shen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; WHO Collaborating Center for Tropical Diseases, Shanghai, China
- The School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- * E-mail: (YS); (JC)
| | - Jianping Cao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; WHO Collaborating Center for Tropical Diseases, Shanghai, China
- The School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- * E-mail: (YS); (JC)
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25
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Establishment of a Newborn Lamb Gut-Loop Model to Evaluate New Methods of Enteric Disease Control and Reduce Experimental Animal Use. Vet Sci 2021; 8:vetsci8090170. [PMID: 34564564 PMCID: PMC8472880 DOI: 10.3390/vetsci8090170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/20/2021] [Accepted: 08/20/2021] [Indexed: 11/16/2022] Open
Abstract
Enteric infectious diseases are not all well controlled, which leads to animal suffering and sometimes death in the most severe cases, in addition to economic losses for farmers. Typical symptoms of enteric infections include watery diarrhea, stomach cramps or pain, dehydration, nausea, vomiting, fever and weight loss. Evaluation of new control methods against enteric infections requires the use of many animals. We aimed to develop a new method for an initial in vivo screen of promising compounds against neonatal diseases such as cryptosporidiosis while limiting experimental animal use. We therefore adapted an in vivo method of multiple consecutive but independent intestinal loops to newborn lambs delivered by cesarean section, in which endotoxin responsiveness is retained. This new method allowed for the screening of natural yeast fractions for their ability to stimulate immune responses and to limit early Cryptosporidium parvum development. This model may also be used to investigate host–pathogen interactions and immune responses in a neonatal controlled environment.
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26
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Phillips-Farfán B, Gómez-Chávez F, Medina-Torres EA, Vargas-Villavicencio JA, Carvajal-Aguilera K, Camacho L. Microbiota Signals during the Neonatal Period Forge Life-Long Immune Responses. Int J Mol Sci 2021; 22:ijms22158162. [PMID: 34360926 PMCID: PMC8348731 DOI: 10.3390/ijms22158162] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 12/27/2022] Open
Abstract
The microbiota regulates immunological development during early human life, with long-term effects on health and disease. Microbial products include short-chain fatty acids (SCFAs), formyl peptides (FPs), polysaccharide A (PSA), polyamines (PAs), sphingolipids (SLPs) and aryl hydrocarbon receptor (AhR) ligands. Anti-inflammatory SCFAs are produced by Actinobacteria, Bacteroidetes, Firmicutes, Spirochaetes and Verrucomicrobia by undigested-carbohydrate fermentation. Thus, fiber amount and type determine their occurrence. FPs bind receptors from the pattern recognition family, those from commensal bacteria induce a different response than those from pathogens. PSA is a capsular polysaccharide from B. fragilis stimulating immunoregulatory protein expression, promoting IL-2, STAT1 and STAT4 gene expression, affecting cytokine production and response modulation. PAs interact with neonatal immunity, contribute to gut maturation, modulate the gut–brain axis and regulate host immunity. SLPs are composed of a sphingoid attached to a fatty acid. Prokaryotic SLPs are mostly found in anaerobes. SLPs are involved in proliferation, apoptosis and immune regulation as signaling molecules. The AhR is a transcription factor regulating development, reproduction and metabolism. AhR binds many ligands due to its promiscuous binding site. It participates in immune tolerance, involving lymphocytes and antigen-presenting cells during early development in exposed humans.
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Affiliation(s)
- Bryan Phillips-Farfán
- Laboratorio de Nutrición Experimental, Instituto Nacional de Pediatría, México City 04530, Mexico; (B.P.-F.); (K.C.-A.)
| | - Fernando Gómez-Chávez
- Laboratorio de Inmunología Experimental, Instituto Nacional de Pediatría, México City 04530, Mexico; (F.G.-C.); (J.A.V.-V.)
- Cátedras CONACyT-Instituto Nacional de Pediatría, México City 04530, Mexico
- Departamento de Formación Básica Disciplinaria, Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional, Mexico City 07320, Mexico
| | | | | | - Karla Carvajal-Aguilera
- Laboratorio de Nutrición Experimental, Instituto Nacional de Pediatría, México City 04530, Mexico; (B.P.-F.); (K.C.-A.)
| | - Luz Camacho
- Laboratorio de Nutrición Experimental, Instituto Nacional de Pediatría, México City 04530, Mexico; (B.P.-F.); (K.C.-A.)
- Correspondence:
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27
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Wagner C, Torow N, Hornef MW, Lelouard H. Spatial and temporal key steps in early-life intestinal immune system development and education. FEBS J 2021; 289:4731-4757. [PMID: 34076962 DOI: 10.1111/febs.16047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/15/2021] [Accepted: 06/01/2021] [Indexed: 12/15/2022]
Abstract
Education of our intestinal immune system early in life strongly influences adult health. This education strongly relies on series of events that must occur in well-defined time windows. From initial colonization by maternal-derived microbiota during delivery to dietary changes from mother's milk to solid foods at weaning, these early-life events have indeed long-standing consequences on our immunity, facilitating tolerance to environmental exposures or, on the contrary, increasing the risk of developing noncommunicable diseases such as allergies, asthma, obesity, and inflammatory bowel diseases. In this review, we provide an outline of the recent advances in our understanding of these events and how they are mechanistically related to intestinal immunity development and education. First, we review the susceptibility of neonates to infections and inflammatory diseases, related to their immune system and microbiota changes. Then, we highlight the maternal factors involved in protection and education of the mucosal immune system of the offspring, the role of the microbiota, and the nature of neonatal immune system until weaning. We also present how the development of some immune responses is intertwined in temporal and spatial windows of opportunity. Finally, we discuss pending questions regarding the neonate particular immune status and the activation of the intestinal immune system at weaning.
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Affiliation(s)
- Camille Wagner
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Natalia Torow
- Institute of Medical Microbiology, RWTH University Hospital, Aachen, Germany
| | - Mathias W Hornef
- Institute of Medical Microbiology, RWTH University Hospital, Aachen, Germany
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28
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Crawford CK, Kol A. The Mucosal Innate Immune Response to Cryptosporidium parvum, a Global One Health Issue. Front Cell Infect Microbiol 2021; 11:689401. [PMID: 34113580 PMCID: PMC8185216 DOI: 10.3389/fcimb.2021.689401] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/07/2021] [Indexed: 02/02/2023] Open
Abstract
Cryptosporidium parvum is an apicomplexan parasite that infects the intestinal epithelium of humans and livestock animals worldwide. Cryptosporidiosis is a leading cause of diarrheal-related deaths in young children and a major cause of economic loss in cattle operations. The disease is especially dangerous to infants and immunocompromised individuals, for which there is no effective treatment or vaccination. As human-to-human, animal-to-animal and animal-to-human transmission play a role in cryptosporidiosis disease ecology, a holistic 'One Health' approach is required for disease control. Upon infection, the host's innate immune response restricts parasite growth and initiates the adaptive immune response, which is necessary for parasite clearance and recovery. The innate immune response involves a complex communicative interplay between epithelial and specialized innate immune cells. Traditional models have been used to study innate immune responses to C. parvum but cannot fully recapitulate natural host-pathogen interactions. Recent shifts to human and bovine organoid cultures are enabling deeper understanding of host-specific innate immunity response to infection. This review examines recent advances and highlights research gaps in our understanding of the host-specific innate immune response to C. parvum. Furthermore, we discuss evolving research models used in the field and potential developments on the horizon.
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Affiliation(s)
- Charles K Crawford
- Department of Pathology, Microbiology, & Immunology, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Amir Kol
- Department of Pathology, Microbiology, & Immunology, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
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29
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Li J, Jin K, Li M, Mathy NW, Gong AY, Deng S, Martins GA, Sun M, Strauss-Soukup JK, Chen XM. A host cell long noncoding RNA NR_033736 regulates type I interferon-mediated gene transcription and modulates intestinal epithelial anti-Cryptosporidium defense. PLoS Pathog 2021; 17:e1009241. [PMID: 33481946 PMCID: PMC7857606 DOI: 10.1371/journal.ppat.1009241] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 02/03/2021] [Accepted: 12/17/2020] [Indexed: 12/18/2022] Open
Abstract
The gastrointestinal epithelium guides the immune system to differentiate between commensal and pathogenic microbiota, which relies on intimate links with the type I IFN signal pathway. Epithelial cells along the epithelium provide the front line of host defense against pathogen infection in the gastrointestinal tract. Increasing evidence supports the regulatory potential of long noncoding RNAs (lncRNAs) in immune defense but their role in regulating intestinal epithelial antimicrobial responses is still unclear. Cryptosporidium, a protozoan parasite that infects intestinal epithelial cells, is an important opportunistic pathogen in AIDS patients and a common cause of diarrhea in young children in developing countries. Recent advances in Cryptosporidium research have revealed a strong type I IFN response in infected intestinal epithelial cells. We previously identified a panel of host cell lncRNAs that are upregulated in murine intestinal epithelial cells following microbial challenge. One of these lncRNAs, NR_033736, is upregulated in intestinal epithelial cells following Cryptosporidium infection and displays a significant suppressive effect on type I IFN-controlled gene transcription in infected host cells. NR_033736 can be assembled into the ISGF3 complex and suppresses type I IFN-mediated gene transcription. Interestingly, upregulation of NR_033736 itself is triggered by the type I IFN signaling. Moreover, NR_033736 modulates epithelial anti-Cryptosporidium defense. Our data suggest that upregulation of NR_033736 provides negative feedback regulation of type I IFN signaling through suppression of type I IFN-controlled gene transcription, and consequently, contributing to fine-tuning of epithelial innate defense against microbial infection.
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Affiliation(s)
- Juan Li
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, China
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, United States of America
| | - Kehua Jin
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, United States of America
- Department of Biochemistry, Hubei University of Science and Technology, Xianning, Hubei, China
| | - Min Li
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, United States of America
| | - Nicholas W. Mathy
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, United States of America
| | - Ai-Yu Gong
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, United States of America
| | - Silu Deng
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, United States of America
| | - Gislaine A. Martins
- Department of Medicine and Biomedical Sciences, Research Division of Immunology Cedars-Sinai Medical Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States of America
| | - Mingfei Sun
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, China
| | - Juliane K. Strauss-Soukup
- Department of Chemistry, Creighton University College of Arts and Sciences, Omaha, NE, United States of America
| | - Xian-Ming Chen
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, United States of America
- * E-mail: ,
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30
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He W, Li J, Gong AY, Deng S, Li M, Wang Y, Mathy NW, Feng Y, Xiao L, Chen XM. Cryptosporidial Infection Suppresses Intestinal Epithelial Cell MAPK Signaling Impairing Host Anti-Parasitic Defense. Microorganisms 2021; 9:microorganisms9010151. [PMID: 33445463 PMCID: PMC7826584 DOI: 10.3390/microorganisms9010151] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 02/07/2023] Open
Abstract
Cryptosporidium is a genus of protozoan parasites that infect the gastrointestinal epithelium of a variety of vertebrate hosts. Intestinal epithelial cells are the first line of defense and play a critical role in orchestrating host immunity against Cryptosporidium infection. To counteract host defense response, Cryptosporidium has developed strategies of immune evasion to promote parasitic replication and survival within epithelial cells, but the underlying mechanisms are largely unclear. Using various models of intestinal cryptosporidiosis, we found that Cryptosporidium infection caused suppression of mitogen-activated protein kinase (MAPK) signaling in infected murine intestinal epithelial cells. Whereas expression levels of most genes encoding the key components of the MAPK signaling pathway were not changed in infected intestinal epithelial cells, we detected a significant downregulation of p38/Mapk, MAP kinase-activated protein kinase 2 (Mk2), and Mk3 genes in infected host cells. Suppression of MAPK signaling was associated with an impaired intestinal epithelial defense against C. parvum infection. Our data suggest that cryptosporidial infection may suppress intestinal epithelial cell MAPK signaling associated with the evasion of host antimicrobial defense.
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Affiliation(s)
- Wei He
- Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (W.H.); (Y.F.); (L.X.)
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE 68198-5880, USA; (J.L.); (A.-Y.G.); (S.D.); (M.L.); (Y.W.); (N.W.M.)
| | - Juan Li
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE 68198-5880, USA; (J.L.); (A.-Y.G.); (S.D.); (M.L.); (Y.W.); (N.W.M.)
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Ai-Yu Gong
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE 68198-5880, USA; (J.L.); (A.-Y.G.); (S.D.); (M.L.); (Y.W.); (N.W.M.)
| | - Silu Deng
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE 68198-5880, USA; (J.L.); (A.-Y.G.); (S.D.); (M.L.); (Y.W.); (N.W.M.)
| | - Min Li
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE 68198-5880, USA; (J.L.); (A.-Y.G.); (S.D.); (M.L.); (Y.W.); (N.W.M.)
| | - Yang Wang
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE 68198-5880, USA; (J.L.); (A.-Y.G.); (S.D.); (M.L.); (Y.W.); (N.W.M.)
| | - Nicholas W. Mathy
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE 68198-5880, USA; (J.L.); (A.-Y.G.); (S.D.); (M.L.); (Y.W.); (N.W.M.)
| | - Yaoyu Feng
- Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (W.H.); (Y.F.); (L.X.)
| | - Lihua Xiao
- Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (W.H.); (Y.F.); (L.X.)
| | - Xian-Ming Chen
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE 68198-5880, USA; (J.L.); (A.-Y.G.); (S.D.); (M.L.); (Y.W.); (N.W.M.)
- Correspondence:
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Neonatal Mouse Gut Metabolites Influence Cryptosporidium parvum Infection in Intestinal Epithelial Cells. mBio 2020; 11:mBio.02582-20. [PMID: 33323514 PMCID: PMC7773987 DOI: 10.1128/mbio.02582-20] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Cryptosporidium sp. occupies a unique intracellular niche that exposes the parasite to both host cell contents and the intestinal lumen, including metabolites from the diet and produced by the microbiota. Both dietary and microbial products change over the course of early development and could contribute to the changes seen in susceptibility to cryptosporidiosis in humans and mice. The protozoan parasite Cryptosporidium sp. is a leading cause of diarrheal disease in those with compromised or underdeveloped immune systems, particularly infants and toddlers in resource-poor localities. As an enteric pathogen, Cryptosporidium sp. invades the apical surface of intestinal epithelial cells, where it resides in close proximity to metabolites in the intestinal lumen. However, the effect of gut metabolites on susceptibility to Cryptosporidium infection remains largely unstudied. Here, we first identified which gut metabolites are prevalent in neonatal mice when they are most susceptible to Cryptosporidium parvum infection and then tested the isolated effects of these metabolites on C. parvum invasion and growth in intestinal epithelial cells. Our findings demonstrate that medium or long-chain saturated fatty acids inhibit C. parvum growth, perhaps by negatively affecting the streamlined metabolism in C. parvum, which is unable to synthesize fatty acids. Conversely, long-chain unsaturated fatty acids enhanced C. parvum invasion, possibly by modulating membrane fluidity. Hence, gut metabolites, either from diet or produced by the microbiota, influence C. parvum growth in vitro and may also contribute to the early susceptibility to cryptosporidiosis seen in young animals.
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Cryptosporidium parvum Subverts Antimicrobial Activity of CRAMP by Reducing Its Expression in Neonatal Mice. Microorganisms 2020; 8:microorganisms8111635. [PMID: 33113928 PMCID: PMC7690728 DOI: 10.3390/microorganisms8111635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/18/2020] [Accepted: 10/18/2020] [Indexed: 12/14/2022] Open
Abstract
Cryptosporidium parvum causes diarrhea in infants under 5 years, in immunosuppressed individuals or in young ruminants. This parasite infects the apical side of ileal epithelial cells where it develops itself and induces inflammation. Antimicrobial peptides (AMPs) are part of the innate immune response, playing a major role in the control of the acute phase of C. parvum infection in neonates. Intestinal AMP production in neonates is characterized by high expressions of Cathelicidin Related Antimicrobial Peptide (CRAMP), the unique cathelicidin in mice known to fight bacterial infections. In this study, we investigated the role of CRAMP during cryptosporidiosis in neonates. We demonstrated that sporozoites are sensitive to CRAMP antimicrobial activity. However, during C. parvum infection the intestinal expression of CRAMP was significantly and selectively reduced, while other AMPs were upregulated. Moreover, despite high CRAMP expression in the intestine of neonates at homeostasis, the depletion of CRAMP did not worsen C. parvum infection. This result might be explained by the rapid downregulation of CRAMP induced by infection. However, the exogenous administration of CRAMP dampened the parasite burden in neonates. Taken together these results suggest that C. parvum impairs the production of CRAMP to subvert the host response, and highlight exogenous cathelicidin supplements as a potential treatment strategy.
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Sun T, Nguyen A, Gommerman JL. Dendritic Cell Subsets in Intestinal Immunity and Inflammation. THE JOURNAL OF IMMUNOLOGY 2020; 204:1075-1083. [PMID: 32071090 DOI: 10.4049/jimmunol.1900710] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 10/11/2019] [Indexed: 12/21/2022]
Abstract
The mammalian intestine is a complex environment that is constantly exposed to Ags derived from food, microbiota, and metabolites. Intestinal dendritic cells (DC) have the responsibility of establishing oral tolerance against these Ags while initiating immune responses against mucosal pathogens. We now know that DC are a heterogeneous population of innate immune cells composed of classical and monocyte-derived DC, Langerhans cells, and plasmacytoid DC. In the intestine, DC are found in organized lymphoid tissues, such as the mesenteric lymph nodes and Peyer's patches, as well as in the lamina propria. In this Brief Review, we review recent work that describes a division of labor between and collaboration among gut DC subsets in the context of intestinal homeostasis and inflammation. Understanding relationships between DC subtypes and their biological functions will rationalize oral vaccine design and will provide insights into treatments that quiet pathological intestinal inflammation.
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Affiliation(s)
- Tian Sun
- Department of Immunology, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S1A8, Canada
| | - Albert Nguyen
- Department of Immunology, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S1A8, Canada
| | - Jennifer L Gommerman
- Department of Immunology, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S1A8, Canada
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Sampah MES, Hackam DJ. Dysregulated Mucosal Immunity and Associated Pathogeneses in Preterm Neonates. Front Immunol 2020; 11:899. [PMID: 32499778 PMCID: PMC7243348 DOI: 10.3389/fimmu.2020.00899] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 04/17/2020] [Indexed: 12/12/2022] Open
Abstract
Many functions of the immune system are impaired in neonates, allowing vulnerability to serious bacterial, viral and fungal infections which would otherwise not be pathogenic to mature individuals. This vulnerability is exacerbated in compromised newborns such as premature neonates and those who have undergone surgery or who require care in an intensive care unit. Higher susceptibility of preterm neonates to infections is associated with delayed immune system maturation, with deficiencies present in both the innate and adaptive immune components. Here, we review recent insights into early life immunity, and highlight features associated with compromised newborns, given the challenges of studying neonatal immunity in compromised neonates due to the transient nature of this period of life, and logistical and ethical obstacles posed by undertaking studies newborns and infants. Finally, we highlight how the unique immunological characteristics of the premature host play key roles in the pathogenesis of diseases that are unique to this population, including necrotizing enterocolitis and the associated sequalae of lung and brain injury.
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Affiliation(s)
- Maame Efua S Sampah
- Division of Pediatric Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - David J Hackam
- Division of Pediatric Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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35
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Potiron L, Lacroix-Lamandé S, Marquis M, Levern Y, Fort G, Franceschini I, Laurent F. Batf3-Dependent Intestinal Dendritic Cells Play a Critical Role in the Control of Cryptosporidium parvum Infection. J Infect Dis 2020; 219:925-935. [PMID: 30203075 DOI: 10.1093/infdis/jiy528] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 08/30/2018] [Indexed: 12/19/2022] Open
Abstract
Understanding the protective immune response to Cryptosporidium parvum infection is of critical importance to reduce the widespread impact caused by this disease in young individuals. Here, we analyzed the various subsets of CD103+ and CD103- intestinal dendritic cells (DCs) of wild-type and Batf3-/- neonatal mice at homoeostasis and investigated their role during infection. Neonatal Batf3-/- mice had a low CD103+/CD103- DC ratio, resulting in higher susceptibility to the acute phase of the infection and they could not cure the infection. Early during infection, CD103- DCs of Batf3-/- neonates had a lower ability to produce interleukin-12 than their wild-type littermates and lower levels of interferon-gamma mRNA were detected in the infected mucosa. Amplification of CD103+ DCs in Batf3-/- neonates prior to infectious challenge reduced their susceptibility to infection. CD103+ DCs thus outperform CD103- DCs in controlling C. parvum infections and represent a primary target of host-directed immunotherapies dedicated to neonates.
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Affiliation(s)
- Laurent Potiron
- INRA, Université François Rabelais de Tours, Centre Val de Loire, ISP, laboratoire Apicomplexes et Immunité Mucosale
| | - Sonia Lacroix-Lamandé
- INRA, Université François Rabelais de Tours, Centre Val de Loire, ISP, laboratoire Apicomplexes et Immunité Mucosale
| | - Mathilde Marquis
- INRA, Université François Rabelais de Tours, Centre Val de Loire, ISP, laboratoire Apicomplexes et Immunité Mucosale
| | - Yves Levern
- INRA, Université François Rabelais de Tours, Centre Val de Loire, ISP, Service de cytométrie
| | - Geneviève Fort
- INRA, Université François Rabelais de Tours, Centre Val de Loire, ISP, laboratoire Apicomplexes et Immunité Mucosale
| | - Isabelle Franceschini
- INRA, CNRS, Université François Rabelais de Tours, Institut Français du Cheval et de l'Equitation, Centre Val de Loire, UMR PRC, Nouzilly France
| | - Fabrice Laurent
- INRA, Université François Rabelais de Tours, Centre Val de Loire, ISP, laboratoire Apicomplexes et Immunité Mucosale
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36
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Zhao Y, Yang Q, Jin C, Feng Y, Xie S, Xie H, Qi Y, Qiu H, Chen H, Tao A, Mu J, Qin W, Huang J. Changes of CD103-expressing pulmonary CD4 + and CD8 + T cells in S. japonicum infected C57BL/6 mice. BMC Infect Dis 2019; 19:999. [PMID: 31775660 PMCID: PMC6880605 DOI: 10.1186/s12879-019-4633-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 11/13/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Recent studies have shown that CD103 is an important marker for tissue-resident memory T cells (TRM) which plays an important role in anti-infection. However, the role of CD103+ TRM was not elucidated in the progress of S. japonicum infection induced disease. METHODS 6-8 weeks old C57BL/6 mice were infected by S. japonicum. Mice were sacrificed and the lungs were removed 5-6 weeks after infection. Immunofluorescent staining and Q-PCR were performed to identify the expression of CD103 molecule. Single cellular populations were made, percentages of CD103 on both CD4+ and CD8+ T lymphocytes were dynamical observed by flow cytometry (FCM). Moreover, the expression of memory T cells related molecules CD69 and CD62L, T cell function associated molecules CD107a, IFN-γ, IL-4, IL-9, and IL-10 were compared between CD103+ CD4+ and CD8+ T cells by FCM. RESULTS CD103+ cells were emerged in the lung of both naive and S. japonicum infected mice. Both the percentage and the absolute numbers of pulmonary CD4+ and CD8+ cells were increased after S. japonicum infection (P < 0.05). The percentage of CD103+ cells in CD8+ T cells decreased significantly at the early stage of S. japonicum infection (P < 0.05). Increased CD69, decreased CD62L and CD107a expressions were detected on both CD4+ and CD8+ CD103+ T cells in the lungs of infected mice (P < 0.05). Compared to CD8+ CD103+ T cells, CD4+ CD103+ T cells from infected mice expressed higher level of CD69 and lower level CD62L molecules (P < 0.05). Moreover, higher percentage of IL-4+, IL-9+ and IL-10+ cells on CD4+ CD103+ pulmonary T cells was found in infected mice (P < 0.05). Significantly increased IL-4 and IL-9, and decreased IFN-γ expressing cells were detected in CD8+CD103+ cells of infected mice (P < 0.05). CONCLUSIONS CD103-expressing pulmonary CD4+ and CD8+ T cells play important roles in mediating S. japonicum infection induced granulomatous inflammation in the lung.
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Affiliation(s)
- Yi Zhao
- Sino-French Hoffmann Institute, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, The State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Quan Yang
- Sino-French Hoffmann Institute, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, The State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Chenxi Jin
- Sino-French Hoffmann Institute, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, The State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Yuanfa Feng
- Sino-French Hoffmann Institute, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, The State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Shihao Xie
- Sino-French Hoffmann Institute, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, The State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Hongyan Xie
- Sino-French Hoffmann Institute, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, The State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Yanwei Qi
- Sino-French Hoffmann Institute, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, The State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Huaina Qiu
- Sino-French Hoffmann Institute, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, The State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Hongyuan Chen
- Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Ailin Tao
- Sino-French Hoffmann Institute, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, The State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Jianbing Mu
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Wenjuan Qin
- Department of Radiation Oncology, Zhongshan Hospital Xiamen University, Xiamen, 361004, China
| | - Jun Huang
- Sino-French Hoffmann Institute, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, The State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China.
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37
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Paerewijck O, Maertens B, Gagnaire A, De Bosscher K, Geldhof P. Delayed development of the protective IL-17A response following a Giardia muris infection in neonatal mice. Sci Rep 2019; 9:8959. [PMID: 31222079 PMCID: PMC6586865 DOI: 10.1038/s41598-019-45544-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 06/04/2019] [Indexed: 11/09/2022] Open
Abstract
Giardia is an intestinal protozoan parasite that has the ability to infect a wide range of hosts, which can result in the clinical condition 'giardiasis'. Over the years, experimental research has shown the crucial involvement of IL-17A to steer the protective immune response against Giardia. The development of the protective response, as reflected by a significant drop in cyst secretion, typically takes around 3 to 4 weeks. However, early-life infections often have a more chronic character lasting for several weeks or months. Therefore, the aim of the current study was to investigate the dynamics of a Giardia muris infection and the subsequent host immune response in neonatal mice infected 4 days after birth. The outcome of the study showed that a G. muris infection in pre-weaned mice failed to trigger a protective IL-17A response, which could explain the prolonged course of infection in comparison to older mice. Only after weaning, a protective intestinal immune response started to develop, characterized by an upregulation of IL-17A and Mbl2 and the secretion of parasite-specific IgA.
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Affiliation(s)
- Oonagh Paerewijck
- Department of Virology, Parasitology and Immunology, Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Brecht Maertens
- Department of Virology, Parasitology and Immunology, Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Aurélie Gagnaire
- Department of Virology, Parasitology and Immunology, Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Karolien De Bosscher
- VIB Department of Medical Protein Research, Receptor Research laboratories, Nuclear Receptor Lab, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Peter Geldhof
- Department of Virology, Parasitology and Immunology, Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
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38
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Dawod B, Marshall JS. Cytokines and Soluble Receptors in Breast Milk as Enhancers of Oral Tolerance Development. Front Immunol 2019; 10:16. [PMID: 30723472 PMCID: PMC6349727 DOI: 10.3389/fimmu.2019.00016] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/04/2019] [Indexed: 12/13/2022] Open
Abstract
The postpartum period is an important window during which environmental factors can shape the life-long health of the infant. This time period often coincides with substantial milk consumption either in the form of breast milk or from cow's milk sources, such as infant formulas. Although breast milk is the most beneficial source of nutrients for infants during the first 6 months after birth, its role in regulating food allergy development, through regulation of oral tolerance, is still controversial. Breast milk contains several factors that can impact mucosal immune function, including immune cells, antibodies, microbiota, oligosaccharides, cytokines, and soluble receptors. However, there is considerable variation in the assessed levels of cytokines and soluble receptors between studies and across the lactation period. Most of these cytokines and soluble receptors are absent, or only found in limited quantities, in commercial baby formulas. Differences in content of these pluripotent factors, which impact on both the mother and the neonate, could contribute to the controversy surrounding the role of breast milk regulating oral tolerance. This review highlights current knowledge about the importance of cytokines and soluble receptors in breast milk on the development of oral tolerance and tolerance-relateddisorders. Understanding the mechanisms by which such milk components might promote oral tolerance could aid in the development of improved strategies for allergy prevention.
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Affiliation(s)
- Bassel Dawod
- Department of Pathology, Dalhousie University, Halifax, NS, Canada
| | - Jean S Marshall
- Department of Pathology, Dalhousie University, Halifax, NS, Canada.,Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
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39
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Papaioannou NE, Pasztoi M, Schraml BU. Understanding the Functional Properties of Neonatal Dendritic Cells: A Doorway to Enhance Vaccine Effectiveness? Front Immunol 2019; 9:3123. [PMID: 30687326 PMCID: PMC6335269 DOI: 10.3389/fimmu.2018.03123] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 12/18/2018] [Indexed: 12/31/2022] Open
Abstract
Increased susceptibility to infectious diseases is a hallmark of the neonatal period of life that is generally attributed to a relative immaturity of the immune system. Dendritic cells (DCs) are innate immune sentinels with vital roles in the initiation and orchestration of immune responses, thus, constituting a promising target for promoting neonatal immunity. However, as is the case for other immune cells, neonatal DCs have been suggested to be functionally immature compared to their adult counterparts. Here we review some of the unique aspects of neonatal DCs that shape immune responses in early life and speculate whether the functional properties of neonatal DCs could be exploited or manipulated to promote more effective vaccination in early life.
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Affiliation(s)
- Nikos E Papaioannou
- Biomedical Center, Institute for Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Maria Pasztoi
- Biomedical Center, Institute for Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Barbara U Schraml
- Biomedical Center, Institute for Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Munich, Germany.,Walter-Brendel-Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
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40
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Mostafa NE, Abdel Hamed EF, Fawzy EM, Zalat RS, Rashed HE, Mohamed SY. The new trend in the treatment of experimental cryptosporidiosis and the resulting intestinal dysplasia. COLORECTAL CANCER 2018. [DOI: 10.2217/crc-2018-0008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aim: Cryptosporidiosis causes colon dysplasia. This research aimed to evaluate the effect of a novel combination between artesunate and nitazoxanide on intensity of infection and the resulting intestinal dysplasia. Materials & methods: Subjects were divided into five groups. Artesunate was used alone, then combined with nitazoxanide. Results: The highest efficacy in reducing oocyst shedding obtained from the combined therapy (68.5, 75.9, 99%) after 7, 14 and 21 days. The histopathology of infected colonic mucosa showed marked improvement and low-grade of dysplasia in the infected and treated group with the combined therapy. The immunohistochemistry of the same group revealed mild dysplastic changes in colonic epithelium without nuclear expression for cyclin D1. Conclusion: These results give hope for treatment of Cryptosporidium and improving intestinal dysplasia.
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Affiliation(s)
- Nahed E Mostafa
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Enas F Abdel Hamed
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Eman M Fawzy
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Rabab S Zalat
- Department of Medical Parasitology, Theodor Bilharz Research Institute, Cairo, Egypt
| | - Hayam E Rashed
- Department of Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Salem Y Mohamed
- Department of Internal Medicine, Gastroenterology & Hepatology Unit, Zagazig University, Zagazig, Egypt
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41
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Engman C, Garciafigueroa Y, Phillips BE, Trucco M, Giannoukakis N. Co-Stimulation-Impaired Bone Marrow-Derived Dendritic Cells Prevent Dextran Sodium Sulfate-Induced Colitis in Mice. Front Immunol 2018; 9:894. [PMID: 29774025 PMCID: PMC5943510 DOI: 10.3389/fimmu.2018.00894] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 04/10/2018] [Indexed: 12/13/2022] Open
Abstract
Dendritic cells (DC) are important in the onset and severity of inflammatory bowel disease (IBD). Tolerogenic DC induce T-cells to become therapeutic Foxp3+ regulatory T-cells (Tregs). We therefore asked if experimental IBD could be prevented by administration of bone marrow-derived DC generated under conventional GM-CSF/IL-4 conditions but in the presence of a mixture of antisense DNA oligonucleotides targeting the primary transcripts of CD40, CD80, and CD86. These cell products (which we call AS-ODN BM-DC) have demonstrated tolerogenic activity in preventing type 1 diabetes and preserving beta cell mass in new-onset type 1 diabetes in the NOD mouse strain, in earlier studies. In addition to measuring efficacy in prevention of experimental IBD, we also sought to identify possible mechanism(s) of action. Weight, behavior, stool frequency, and character were observed daily for 7–10 days in experimental colitis in mice exposed to dextran sodium sulfate (DSS) following injection of the AS-ODN BM-DC. After euthanasia, the colons were processed for histology while spleen and mesenteric lymph nodes (MLNs) were made into single cells to measure Foxp3+ Treg as well as IL-10+ regulatory B-cell (Breg) population frequency by flow cytometry. AS-ODN BM-DC prevented DSS-induced colitis development. Recipients of these cells exhibited significant increases in Foxp3+ Treg and IL-10+ Breg in MLN and spleen. Histological examination of colon sections of colitis-free mice remained largely architecturally physiologic and mostly free of leukocyte infiltration when compared with DSS-treated animals. Although DSS colitis is mainly an innate immunity-driven condition, our study adds to the growing body of evidence showing that Foxp3+ Treg and IL-10 Bregs can suppress a mainly innate-driven inflammation. The already-established safety of human DC generated from monocytic progenitors in the presence of the mixture of antisense DNA targeting the primary transcripts of CD40, CD80, and CD86 in humans offers the potential to adapt them for clinical IBD therapy.
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Affiliation(s)
- Carl Engman
- Institute of Cellular Therapeutics, Allegheny Health Network, Pittsburgh, PA, United States
| | - Yesica Garciafigueroa
- Institute of Cellular Therapeutics, Allegheny Health Network, Pittsburgh, PA, United States
| | - Brett Eugene Phillips
- Institute of Cellular Therapeutics, Allegheny Health Network, Pittsburgh, PA, United States
| | - Massimo Trucco
- Institute of Cellular Therapeutics, Allegheny Health Network, Pittsburgh, PA, United States.,Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Nick Giannoukakis
- Institute of Cellular Therapeutics, Allegheny Health Network, Pittsburgh, PA, United States.,Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, United States
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42
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Ahn M, Ko HJ, Kim J, Jang Y, Shin T. Evaluation of the inflammatory response to Kudoa septempunctata genotype ST3 isolated from olive flounder (Paralichthys olivaceus) in Caco-2 cells. Parasite 2018; 25:12. [PMID: 29533763 PMCID: PMC5849418 DOI: 10.1051/parasite/2018013] [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: 01/10/2018] [Accepted: 02/24/2018] [Indexed: 12/04/2022] Open
Abstract
Kudoa septempunctata (Myxosporea, Multivalvulida) is a parasite of the trunk muscle of cultured olive flounder (Paralichthys olivaceus). We investigated whether K. septempunctata genotype ST3 spores induce cell damage and the secretion of inflammatory mediators in Caco-2 cells, which exhibit characteristics similar to human intestinal epithelial cells. Purified K. septempunctata spores were heated at 95 °C for 5 min. Lactate dehydrogenase (LDH) release was measured to determine the efficacy of denaturation. Naïve and heated spores, lipopolysaccharide (positive control) and vehicle (negative control) were added to Caco-2 cells. Cells were subjected to the cytotoxic LDH assay and western blot analysis to examine the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2. Supernatants were collected to measure nitric oxide (NO) and prostaglandin E2 (PGE2). Most spores were denaturated by heating, and the spore morphology was found to be wrinkled with shell valves and polar capsules. In addition, cytotoxicity and inflammatory mediators, such as NO, PGE2, iNOS, and COX-2, remained unchanged in Caco-2 cells following exposure to naïve and heated spores compared with the positive controls. Collectively, the findings of this study imply that spores of K. septempunctata genotype ST3 do not cause inflammation in Caco-2 cells.
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Affiliation(s)
- Meejung Ahn
- College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University,
Jeju
63243 Republic of Korea
| | - Hyun Ju Ko
- It’s Hanbul Co., Ltd. Research Institute 4, Nonhyeon-dong 249, Gangnam-gu,
Seoul
06101 Republic of Korea
| | - Jeongtae Kim
- College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University,
Jeju
63243 Republic of Korea
| | - Yeounghwan Jang
- Ocean and Fisheries Research Institute, Jeju Special Self-Governing Province, Pyoseon-myeon, Segwipo-si,
Jeju
63629 Republic of Korea
| | - Taekyun Shin
- College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University,
Jeju
63243 Republic of Korea
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43
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Ming Z, Gong AY, Wang Y, Zhang XT, Li M, Dolata CE, Chen XM. Trans-suppression of defense DEFB1 gene in intestinal epithelial cells following Cryptosporidium parvum infection is associated with host delivery of parasite Cdg7_FLc_1000 RNA. Parasitol Res 2018; 117:831-840. [PMID: 29374323 DOI: 10.1007/s00436-018-5759-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 01/10/2018] [Indexed: 10/18/2022]
Abstract
To counteract host immunity, Cryptosporidium parvum has evolved multiple strategies to suppress host antimicrobial defense. One such strategy is to reduce the production of the antimicrobial peptide beta-defensin 1 (DEFB1) by host epithelial cells but the underlying mechanisms remain unclear. Recent studies demonstrate that a panel of parasite RNA transcripts of low protein-coding potential are delivered into infected host cells and may modulate host gene transcription. Using in vitro models of intestinal cryptosporidiosis, in this study, we analyzed the expression profile of host beta-defensin genes in host cells following infection. We found that C. parvum infection caused a significant downregulation of the DEFB1 gene. Interestingly, downregulation of DEFB1 gene was associated with host delivery of Cdg7_FLc_1000 RNA transcript, a C. parvum RNA that has previously demonstrated to be delivered into the nuclei of infected host cells. Knockdown of Cdg7_FLc_1000 in host cells could attenuate the trans-suppression of host DEFB1 gene and decreased the parasite burden. Therefore, our data suggest that trans-suppression of DEFB1 gene in intestinal epithelial cells following C. parvum infection involves host delivery of parasite Cdg7_FLc_1000 RNA, a process that may be relevant to the epithelial defense evasion by C. parvum at the early stage of infection.
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Affiliation(s)
- Zhenping Ming
- Department of Medical Parasitology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China.,Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Criss III, Room 352, 2500 California Plaza, Omaha, NE, 68178, USA
| | - Ai-Yu Gong
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Criss III, Room 352, 2500 California Plaza, Omaha, NE, 68178, USA
| | - Yang Wang
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Criss III, Room 352, 2500 California Plaza, Omaha, NE, 68178, USA
| | - Xin-Tian Zhang
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Criss III, Room 352, 2500 California Plaza, Omaha, NE, 68178, USA
| | - Min Li
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Criss III, Room 352, 2500 California Plaza, Omaha, NE, 68178, USA
| | - Courtney E Dolata
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Criss III, Room 352, 2500 California Plaza, Omaha, NE, 68178, USA
| | - Xian-Ming Chen
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Criss III, Room 352, 2500 California Plaza, Omaha, NE, 68178, USA.
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44
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Lemieux MW, Sonzogni-Desautels K, Ndao M. Lessons Learned from Protective Immune Responses to Optimize Vaccines against Cryptosporidiosis. Pathogens 2017; 7:pathogens7010002. [PMID: 29295550 PMCID: PMC5874728 DOI: 10.3390/pathogens7010002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 12/16/2017] [Accepted: 12/22/2017] [Indexed: 02/06/2023] Open
Abstract
In developing countries, cryptosporidiosis causes moderate-to-severe diarrhea and kills thousands of infants and toddlers annually. Drinking and recreational water contaminated with Cryptosporidium spp. oocysts has led to waterborne outbreaks in developed countries. A competent immune system is necessary to clear this parasitic infection. A better understanding of the immune responses required to prevent or limit infection by this protozoan parasite is the cornerstone of development of an effective vaccine. In this light, lessons learned from previously developed vaccines against Cryptosporidium spp. are at the foundation for development of better next-generation vaccines. In this review, we summarize the immune responses elicited by naturally and experimentally-induced Cryptosporidium spp. infection and by several experimental vaccines in various animal models. Our aim is to increase awareness about the immune responses that underlie protection against cryptosporidiosis and to encourage promotion of these immune responses as a key strategy for vaccine development. Innate and mucosal immunity will be addressed as well as adaptive immunity, with an emphasis on the balance between TH1/TH2 immune responses. Development of more effective vaccines against cryptosporidiosis is needed to prevent Cryptosporidium spp.-related deaths in infants and toddlers in developing countries.
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Affiliation(s)
- Maxime W Lemieux
- National Reference Centre for Parasitology, Research Institute of the McGill University Health Centre, McGill University, Montreal, QC H4A 3J1, Canada.
- Department of Medicine, Division of Experimental Medicine, Faculty of Medicine, McGill University, Montreal, QC H4A 3J1, Canada.
| | - Karine Sonzogni-Desautels
- National Reference Centre for Parasitology, Research Institute of the McGill University Health Centre, McGill University, Montreal, QC H4A 3J1, Canada.
- Faculty of Agricultural and Environmental Sciences, Institute of Parasitology, McGill University, Ste-Anne-de-Bellevue, QC H9X 3V9, Canada.
| | - Momar Ndao
- National Reference Centre for Parasitology, Research Institute of the McGill University Health Centre, McGill University, Montreal, QC H4A 3J1, Canada.
- Department of Medicine, Division of Infectious Diseases, Faculty of Medicine, McGill University, Montreal, QC H4A 3J1, Canada.
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45
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Nuclear delivery of parasite Cdg2_FLc_0220 RNA transcript to epithelial cells during Cryptosporidium parvum infection modulates host gene transcription. Vet Parasitol 2017; 251:27-33. [PMID: 29426472 DOI: 10.1016/j.vetpar.2017.12.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 12/15/2017] [Accepted: 12/19/2017] [Indexed: 01/02/2023]
Abstract
Intestinal infection by the zoonotic protozoan, Cryptosporidium parvum, causes significant alterations in the gene expression profile in host epithelial cells. The molecular mechanisms of how C. parvum may modulate host cell gene transcription and the pathological significance of such alterations are largely unclear. Previous studies demonstrate that a panel of parasite RNA transcripts are delivered into infected host cells and may modulate host gene transcription. Using in vitro models of intestinal cryptosporidiosis, in this study, we analyzed the impact of host delivery of C. parvum Cdg2_FLc_0220 RNA transcript on host gene expression profile. We found that alterations in host gene expression profile following C. parvum infection were partially associated with the nuclear delivery of Cdg2_FLc_0220. Specifically, we identified a total of 46 overlapping upregulated genes and 8 overlapping downregulated genes in infected cells and cells transfected with Full-Cdg2_FLc_0220. Trans-suppression of the DAZ interacting zinc finger protein 1 like (DZIP1L) gene, the top overlapping downregulated gene in host cells following C. parvum infection and cells transfected with Full-Cdg2_FLc_0220, was mediated by G9a, independent of PRDM1. Cdg2_FLc_0220-mediated trans-suppression of the DZIP1L gene was independent of H3K9 and H3K27 methylation. Data from this study provide additional evidence that delivery of C. parvum Cdg2_FLc_0220 RNA transcript in infected epithelial cells modulates the transcription of host genes, contributing to the alterations in the gene expression profile in host epithelial cells during C. parvum infection.
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46
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Allen F, Bobanga ID, Rauhe P, Barkauskas D, Teich N, Tong C, Myers J, Huang AY. CCL3 augments tumor rejection and enhances CD8 + T cell infiltration through NK and CD103 + dendritic cell recruitment via IFNγ. Oncoimmunology 2017; 7:e1393598. [PMID: 29399390 PMCID: PMC5790335 DOI: 10.1080/2162402x.2017.1393598] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/12/2017] [Accepted: 10/13/2017] [Indexed: 01/08/2023] Open
Abstract
Inflammatory chemokines are critical contributors in attracting relevant immune cells to the tumor microenvironment and driving cellular interactions and molecular signaling cascades that dictate the ultimate outcome of host anti-tumor immune response. Therefore, rational application of chemokines in a spatial-temporal dependent manner may constitute an attractive adjuvant in immunotherapeutic approaches against cancer. Existing data suggest that the macrophage inflammatory protein (MIP)-1 family and related proteins, consisting of CCL3 (MIP-1α), CCL4 (MIP-1β), and CCL5 (RANTES), can be major determinant of immune cellular infiltration in certain tumors through their direct recruitment of antigen presenting cells, including dendritic cells (DCs) to the tumor site. In this study, we examined how CCL3 in a murine colon tumor microenvironment, CT26, enhances antitumor immunity. We identified natural killer (NK) cells as a major lymphocyte subtype that is preferentially recruited to the CCL3-rich tumor site. NK cells contribute to the overall IFNγ content, CD103+ DC accumulation, and augment the production of chemokines CXCL9 and CXCL10 for enhanced T cell recruitment. We further demonstrate that both soluble CCL3 and CCL3-secreting irradiated tumor vaccine can effectively halt the progression of established tumors in a spatial-dependent manner. Our finding implies an important contribution of NK in the CCL3 - CD103+ DC - CXCL9/10 signaling axis in determining tumor immune landscape within the tumor microenvironment.
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Affiliation(s)
- Frederick Allen
- Pathology, Case Western Reserve University School of Medicine, Wolstein Research Building, Cleveland, Ohio, United States
| | - Iuliana D. Bobanga
- Surgery, Case Western Reserve University School of Medicine, Wolstein Research Building, Cleveland, Ohio, United States
| | - Peter Rauhe
- Pediatrics, Case Western Reserve University School of Medicine, Wolstein Research Building, Cleveland, Ohio, United States
| | - Deborah Barkauskas
- Pediatrics, Case Western Reserve University School of Medicine, Wolstein Research Building, Cleveland, Ohio, United States
| | - Nathan Teich
- Pediatrics, Case Western Reserve University School of Medicine, Wolstein Research Building, Cleveland, Ohio, United States
| | - Caryn Tong
- Pediatrics, Case Western Reserve University School of Medicine, Wolstein Research Building, Cleveland, Ohio, United States
| | - Jay Myers
- Pediatrics, Case Western Reserve University School of Medicine, Wolstein Research Building, Cleveland, Ohio, United States
| | - Alex Y. Huang
- Pathology, Case Western Reserve University School of Medicine, Wolstein Research Building, Cleveland, Ohio, United States
- Pediatrics, Case Western Reserve University School of Medicine, Wolstein Research Building, Cleveland, Ohio, United States
- Angie Fowler AYA Cancer Institute, UH Rainbow Babies & Children's Hospital, Eulcid Avenue, Cleveland, Ohio, United States
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47
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Laurent F, Lacroix-Lamandé S. Innate immune responses play a key role in controlling infection of the intestinal epithelium by Cryptosporidium. Int J Parasitol 2017; 47:711-721. [PMID: 28893638 DOI: 10.1016/j.ijpara.2017.08.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/24/2017] [Accepted: 08/23/2017] [Indexed: 12/15/2022]
Abstract
Cryptosporidium infection leads to acute diarrhea worldwide. The development of cryptosporidiosis is closely related to the immune status of its host, affecting primarily young ruminants, infants, and immunocompromised individuals. In recent years, several studies have improved our knowledge on the immune mechanisms responsible for the control of the acute phase of the infection and have highlighted the importance of innate immunity. The parasite develops in the apical side of intestinal epithelial cells, giving these cells a central role, as they are both the exclusive host cell for replication of the parasite and participate in the protective immune response. Epithelial cells signal the infection by producing chemokines, attracting immune cells to the infected area. They also actively participate in host defense by inducing apoptosis and releasing antimicrobial peptides, free or incorporated into luminal exosomes, with parasiticidal activity. The parasite has developed several escape mechanisms to slow down these protective mechanisms. Recent development of several three-dimensional culture models and the ability to genetically manipulate Cryptosporidium will greatly help to further investigate host-pathogen interactions and identify virulence factors. Intestinal epithelial cells require the help of immune cells to clear the infection. Intestinal dendritic cells, well known for their ability to induce and orchestrate adaptive immunity, play a key role in controlling the very early steps of Cryptosporidium parvum infection by acting as immunological sentinels and active effectors. However, inflammatory monocytes, which are quickly and massively recruited to the infected mucosa, seem to participate in the loss of epithelial integrity. In addition to new promising chemotherapies, we must consider stimulating the innate immunity of neonates to strengthen their ability to control Cryptosporidium development. The microbiota plays a fundamental role in the development of intestinal immunity and may be considered to be a third actor in host-pathogen interactions. There is an urgent need to reduce the incidence of this yet poorly controlled disease in the populations of developing countries, and decrease economic losses due to infected livestock.
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Affiliation(s)
- Fabrice Laurent
- UMR1282 Infectiologie et Santé Publique, INRA Centre Val de Loire, Université François Rabelais de Tours, 37380 Nouzilly, France.
| | - Sonia Lacroix-Lamandé
- UMR1282 Infectiologie et Santé Publique, INRA Centre Val de Loire, Université François Rabelais de Tours, 37380 Nouzilly, France.
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48
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Thomson S, Hamilton CA, Hope JC, Katzer F, Mabbott NA, Morrison LJ, Innes EA. Bovine cryptosporidiosis: impact, host-parasite interaction and control strategies. Vet Res 2017; 48:42. [PMID: 28800747 PMCID: PMC5553596 DOI: 10.1186/s13567-017-0447-0] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 08/01/2017] [Indexed: 01/08/2023] Open
Abstract
Gastrointestinal disease caused by the apicomplexan parasite Cryptosporidium parvum is one of the most important diseases of young ruminant livestock, particularly neonatal calves. Infected animals may suffer from profuse watery diarrhoea, dehydration and in severe cases death can occur. At present, effective therapeutic and preventative measures are not available and a better understanding of the host-pathogen interactions is required. Cryptosporidium parvum is also an important zoonotic pathogen causing severe disease in people, with young children being particularly vulnerable. Our knowledge of the immune responses induced by Cryptosporidium parasites in clinically relevant hosts is very limited. This review discusses the impact of bovine cryptosporidiosis and describes how a thorough understanding of the host-pathogen interactions may help to identify novel prevention and control strategies.
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Affiliation(s)
- Sarah Thomson
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh, EH26 0PZ, Scotland, UK
| | - Carly A Hamilton
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - Jayne C Hope
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - Frank Katzer
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh, EH26 0PZ, Scotland, UK
| | - Neil A Mabbott
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - Liam J Morrison
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - Elisabeth A Innes
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh, EH26 0PZ, Scotland, UK.
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49
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Huang Y, Cao W, Shi K, Mi R, Lu K, Han X, Chen Z. Protective efficacy of recombinant Cryptosporidium parvum CpPRP1 sushi domain against C. tyzzeri infection in mice. Parasite Immunol 2017; 39. [PMID: 28599077 DOI: 10.1111/pim.12449] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 06/02/2017] [Indexed: 01/06/2023]
Abstract
Until now, there are no completely effective parasite-specific pharmaceuticals or immunotherapies for treatment against the zoonotic cryptosporidiosis. Sushi domain (CpSushi) is an important functional domain in Cryptosporidium parvum putative rhoptry protein-1 (CpPRP1), which is the only reported C. parvum rhoptry protein and may play key role in the course of invasion. Here, a 708-bp fragment encoding the CpSushi domain was amplified and expressed in E. coli. Immunofluorescence detection showed that CpSushi was located on the surface of C. parvum oocysts and the apical pole to the sporozoites that belonged to the position of rhoptry. Three-week-old female ICR mice were used for detecting the immunoreactions and immunoprotection of recombinant CpSushi (rCpSushi) to artificial C. tyzzeri infection. The results indicated that a significant increase of anti-CpSushi antibody response was induced by the recombinant protein. Compared to blank, Tris-EDTA (TE) buffer and adjuvant controls mice, rCpSushi-immunized mice produced specific spleen cell proliferation as well as enhanced IL4, IL5, IL12p70 and TNF-α production in vitro. The reduction rate of parasites shedding in stool in mice immunized with rCpSushi was 68.91% after challenging with C. tyzzeri. These results suggest that CpSushi could be a new promising cryptosporidiosis vaccine candidate antigen composition.
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Affiliation(s)
- Y Huang
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - W Cao
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - K Shi
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - R Mi
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - K Lu
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - X Han
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Z Chen
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
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50
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Ming Z, Zhou R, Chen XM. Regulation of host epithelial responses toCryptosporidiuminfection by microRNAs. Parasite Immunol 2017; 39. [DOI: 10.1111/pim.12408] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 12/02/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Z. Ming
- Department of Medical Parasitology; School of Basic Medical Sciences; Wuhan University; Hubei China
- Department of Medical Microbiology and Immunology; Creighton University School of Medicine; Omaha NE USA
| | - R. Zhou
- Department of Medical Parasitology; School of Basic Medical Sciences; Wuhan University; Hubei China
| | - X.-M. Chen
- Department of Medical Microbiology and Immunology; Creighton University School of Medicine; Omaha NE USA
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