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Lee MSJ, Matsuo-Dapaah J, Del Rosario Zorrilla C, Omatsu Y, Nagasawa T, Uemura S, Iwama A, Ishii KJ, Coban C. Acute malaria suppresses the B lymphocytic niche in the bone marrow through the alteration of CXCL12-abundant reticular cells. Int Immunol 2024; 36:339-352. [PMID: 38430523 DOI: 10.1093/intimm/dxae012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 02/28/2024] [Indexed: 03/04/2024] Open
Abstract
Bone marrow is a dynamic organ composed of stem cells that constantly receive signals from stromal cells and other hematopoietic cells in the niches of the bone marrow to maintain hematopoiesis and generate immune cells. Perturbation of the bone marrow microenvironment by infection and inflammation affects hematopoiesis and may affect immune cell development. Little is known about the effect of malaria on the bone marrow stromal cells that govern the hematopoietic stem cell (HSC) niche. In this study, we demonstrate that the mesenchymal stromal CXCL12-abundant reticular (CAR) cell population is reduced during acute malaria infection. The reduction of CXCL12 and interleukin-7 signals in the bone marrow impairs the lymphopoietic niche, leading to the depletion of common lymphoid progenitors, B cell progenitors, and mature B cells, including plasma cells in the bone marrow. We found that interferon-γ (IFNγ) is responsible for the upregulation of Sca1 on CAR cells, yet the decline in CAR cell and B cell populations in the bone marrow is IFNγ-independent. In contrast to the decline in B cell populations, HSCs and multipotent progenitors increased with the expansion of myelopoiesis and erythropoiesis, indicating a bias in the differentiation of multipotent progenitors during malaria infection. These findings suggest that malaria may affect host immunity by modulating the bone marrow niche.
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Affiliation(s)
- Michelle Sue Jann Lee
- Division of Malaria Immunology, Department of Microbiology and Immunology, The Institute of Medical Science (IMSUT), The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
- International Vaccine Design Center, The Institute of Medical Science (IMSUT), The University of Tokyo, Tokyo 108-8639, Japan
| | - Julia Matsuo-Dapaah
- Division of Malaria Immunology, Department of Microbiology and Immunology, The Institute of Medical Science (IMSUT), The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Camila Del Rosario Zorrilla
- Division of Malaria Immunology, Department of Microbiology and Immunology, The Institute of Medical Science (IMSUT), The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Yoshiki Omatsu
- Laboratory of Stem Cell Biology and Developmental Immunology, Graduate School of Frontier Biosciences and Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
- Laboratory of Stem Cell Biology and Developmental Immunology, WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Takashi Nagasawa
- Laboratory of Stem Cell Biology and Developmental Immunology, Graduate School of Frontier Biosciences and Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
- Laboratory of Stem Cell Biology and Developmental Immunology, WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Shun Uemura
- Division of Stem Cell and Molecular Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science (IMSUT), The University of Tokyo, Tokyo 108-8639, Japan
| | - Atsushi Iwama
- Division of Stem Cell and Molecular Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science (IMSUT), The University of Tokyo, Tokyo 108-8639, Japan
- Laboratory of Cellular and Molecular Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
- The University of Tokyo Pandemic Preparedness, Infection and Advanced Research Center (UTOPIA), The University of Tokyo, Tokyo 108-8639, Japan
| | - Ken J Ishii
- International Vaccine Design Center, The Institute of Medical Science (IMSUT), The University of Tokyo, Tokyo 108-8639, Japan
- The University of Tokyo Pandemic Preparedness, Infection and Advanced Research Center (UTOPIA), The University of Tokyo, Tokyo 108-8639, Japan
- Division of Vaccine Science, Department of Microbiology and Immunology, The Institute of Medical Science (IMSUT), The University of Tokyo, Tokyo 108-8639, Japan
- WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Cevayir Coban
- Division of Malaria Immunology, Department of Microbiology and Immunology, The Institute of Medical Science (IMSUT), The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
- International Vaccine Design Center, The Institute of Medical Science (IMSUT), The University of Tokyo, Tokyo 108-8639, Japan
- The University of Tokyo Pandemic Preparedness, Infection and Advanced Research Center (UTOPIA), The University of Tokyo, Tokyo 108-8639, Japan
- WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
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Feldman TP, Ryan Y, Egan ES. Plasmodium falciparum infection of human erythroblasts induces transcriptional changes associated with dyserythropoiesis. Blood Adv 2023; 7:5496-5509. [PMID: 37493969 PMCID: PMC10515311 DOI: 10.1182/bloodadvances.2023010844] [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: 05/30/2023] [Revised: 07/24/2023] [Accepted: 07/24/2023] [Indexed: 07/27/2023] Open
Abstract
During development down the erythroid lineage, hematopoietic stem cells undergo dramatic changes to cellular morphology and function in response to a complex and tightly regulated program of gene expression. In malaria infection, Plasmodium spp parasites accumulate in the bone marrow parenchyma, and emerging evidence suggests erythroblastic islands are a protective site for parasite development into gametocytes. Although it has been observed that Plasmodium falciparum infection in late-stage erythroblasts can delay terminal erythroid differentiation and enucleation, the mechanism(s) underlying this phenomenon are unknown. Here, we apply RNA sequencing after fluorescence-activated cell sorting of infected erythroblasts to identify transcriptional responses to direct and indirect interaction with P falciparum. Four developmental stages of erythroid cells were analyzed: proerythroblast, basophilic erythroblast, polychromatic erythroblast, and orthochromatic erythroblast. We found extensive transcriptional changes in infected erythroblasts compared with that in uninfected cells in the same culture, including dysregulation of genes involved in erythroid proliferation and developmental processes. Although some indicators of cellular oxidative and proteotoxic stress were common across all stages of erythropoiesis, many responses were specific to cellular processes associated with developmental stage. Together, our results evidence multiple possible avenues by which parasite infection can induce dyserythropoiesis at specific points along the erythroid continuum, advancing our understanding of the molecular determinants of malaria anemia.
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Affiliation(s)
- Tamar P. Feldman
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA
| | - Yana Ryan
- Stanford Center for Genomics and Personalized Medicine, Stanford University School of Medicine, Stanford, CA
| | - Elizabeth S. Egan
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA
- Chan Zuckerberg Biohub, San Francisco, CA
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Amo L, Kole HK, Scott B, Qi CF, Krymskaya L, Wang H, Miller LH, Janse CJ, Bolland S. Plasmodium curtails autoimmune nephritis via lasting bone marrow alterations, independent of hemozoin accumulation. Front Immunol 2023; 14:1192819. [PMID: 37539049 PMCID: PMC10394379 DOI: 10.3389/fimmu.2023.1192819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/30/2023] [Indexed: 08/05/2023] Open
Abstract
The host response against infection with Plasmodium commonly raises self-reactivity as a side effect, and antibody deposition in kidney has been cited as a possible cause of kidney injury during severe malaria. In contrast, animal models show that infection with the parasite confers long-term protection from lethal lupus nephritis initiated by autoantibody deposition in kidney. We have limited knowledge of the factors that make parasite infection more likely to induce kidney damage in humans, or the mechanisms underlying protection from autoimmune nephritis in animal models. Our experiments with the autoimmune-prone FcγR2B[KO] mice have shown that a prior infection with P. yoelii 17XNL protects from end-stage nephritis for a year, even when overall autoreactivity and systemic inflammation are maintained at high levels. In this report we evaluate post-infection alterations, such as hemozoin accumulation and compensatory changes in immune cells, and their potential role in the kidney-specific protective effect by Plasmodium. We ruled out the role of pigment accumulation with the use of a hemozoin-restricted P. berghei ANKA parasite, which induced a self-resolved infection that protected from autoimmune nephritis with the same mechanism as parasitic infections that accumulated normal levels of hemozoin. In contrast, adoptive transfer experiments revealed that bone marrow cells were altered by the infection and could transmit the kidney protective effect to a new host. While changes in the frequency of bone marrow cell populations after infection were variable and unique to a particular parasite strain, we detected a sustained bias in cytokine/chemokine expression that suggested lower fibrotic potential and higher Th1 bias likely affecting multiple cell populations. Sustained changes in bone marrow cell activation profile could have repercussions in immune responses long after the infection was cleared.
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Affiliation(s)
- Laura Amo
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Hemanta K. Kole
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Bethany Scott
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Ludmila Krymskaya
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Hongsheng Wang
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Louis H. Miller
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Chris J. Janse
- Leiden Malaria Research Group, Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Silvia Bolland
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
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Schats R. Developing an archaeology of malaria. A critical review of current approaches and a discussion on ways forward. INTERNATIONAL JOURNAL OF PALEOPATHOLOGY 2023; 41:32-42. [PMID: 36930997 DOI: 10.1016/j.ijpp.2023.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 02/17/2023] [Accepted: 03/04/2023] [Indexed: 06/12/2023]
Abstract
OBJECTIVE This paper presents the current state of the art in the investigation of past malaria by providing an extensive review of previous studies and identifying research possibilities for the future. MATERIALS All previous research on the detection of malaria in human skeletal material using macroscopic and biomolecular approaches is considered. METHODS The approaches and methods used by scholars and the results they obtained are evaluated and the limitations discussed. RESULTS There is a link between malaria and porous lesions with significantly higher prevalence in malaria-endemic areas, however, they are not pathognomonic or specific for malaria. Malaria can be identified using biomolecular techniques, yet, to date there is no completely satisfactory method that is able to consistently diagnose the disease. CONCLUSIONS Using macroscopic and biomolecular techniques, malaria can be investigated in past populations and the impact of the disease studied. Yet, this is not a straightforward process and the use of multiple lines of evidence is necessary to obtain the best results. SIGNIFICANCE The extensive discussion on ways malaria can and cannot be identified in past populations and the suggestions for new approaches provide a steppingstone for future research into this debilitating, global disease. LIMITATIONS Malaria is a difficult disease to study archaeologically and successful identification depends on many intrinsic and extrinsic factors. SUGGESTIONS FOR FURTHER RESEARCH More large-scale spatial analyses of porous lesions as well as targeting different tissues or molecules for biomolecular identification may improve the archaeological understanding of malaria.
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Affiliation(s)
- Rachel Schats
- Leiden University, Faculty of Archaeology, Laboratory for Human Osteoarchaeology, Einsteinweg 2, 2333CC Leiden, the Netherlands.
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Feldman TP, Ryan Y, Egan ES. Plasmodium falciparum infection of human erythroblasts induces transcriptional changes associated with dyserythropoiesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.23.538003. [PMID: 37398027 PMCID: PMC10312461 DOI: 10.1101/2023.04.23.538003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
During development down the erythroid lineage, hematopoietic stem cells undergo dramatic changes to cellular morphology and function in response to a complex and tightly regulated program of gene expression. In malaria infection, Plasmodium spp . parasites accumulate in the bone marrow parenchyma, and emerging evidence suggests erythroblastic islands are a protective site for parasite development into gametocytes. While it has been observed that Plasmodium falciparum infection of late-stage erythroblasts can delay terminal erythroid differentiation and enucleation, the mechanism(s) underlying this phenomenon are unknown. Here, we apply RNA-seq after fluorescence-activated cell sorting (FACS) of infected erythroblasts to identify transcriptional responses to direct and indirect interaction with Plasmodium falciparum . Four developmental stages of erythroid cells were analyzed: proerythroblast, basophilic erythroblast, polychromatic erythroblast, and orthochromatic erythroblast. We found extensive transcriptional changes in infected erythroblasts compared to uninfected cells in the same culture, including dysregulation of genes involved in erythroid proliferation and developmental processes. Whereas some indicators of cellular oxidative and proteotoxic stress were common across all stages of erythropoiesis, many responses were specific to cellular processes associated with developmental stage. Together, our results evidence multiple possible avenues by which parasite infection can induce dyserythropoiesis at specific points along the erythroid continuum, advancing our understanding of the molecular determinants of malaria anemia. Key Points Erythroblasts at different stages of differentiation have distinct responses to infection by Plasmodium falciparum . P. falciparum infection of erythroblasts alters expression of genes related to oxidative and proteotoxic stress and erythroid development.
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Paica IC, Rusu I, Popescu O, Brînzan A, Pencea I, Dobrinescu C, Kelemen B. Tentative indicators of malaria in archaeological skeletal samples, a pilot study testing different methods. INTERNATIONAL JOURNAL OF PALEOPATHOLOGY 2023; 40:109-116. [PMID: 36724549 DOI: 10.1016/j.ijpp.2023.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
OBJECTIVE This study attempts to integrate multiple methods to investigate the presence of malaria in human skeletal samples from an archaeological context. MATERIALS 33 well preserved human remains originating from a 17th-century archaeological site in southeastern Romania. METHODS The human bone samples were analyzed using rapid diagnostic tests for malaria antigens and PCR amplification of Plasmodium falciparum apical membrane antigen 1. A preliminary test was performed to identify and briefly characterize the presence of hemozoin using a combination of TEM imaging and diffraction. RESULTS The rapid diagnostic tests indicated that more than half of the examined samples were positive for Plasmodium antigens, but no traces of the parasites' genetic material were detected despite repeated attempts. The TEM images indicated that hemozoin might be a promising diagnostic marker of malaria in ancient bones. CONCLUSIONS The indisputable identification of malaria in the analyzed archaeological population was not possible as none of the applied methodological strategies turned out to be straightforward. SIGNIFICANCE This study reinforces the intricacy and limitations of unequivocally identifying malaria in past populations and sets the stage for future studies on such life-threatening infectious disease in a geographical space, which is currently underrepresented in the bioarchaeological literature. LIMITATIONS The low sample size and the lack of consistency across all assays hindered understanding the role of malaria in the studied population. SUGGESTIONS FOR FURTHER RESEARCH Further thorough multidisciplinary approaches on malaria detection in ancient settlements would be appropriate to inform our knowledge of its origins, frequency, and pathogen changes over centuries.
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Affiliation(s)
| | - Ioana Rusu
- Department of Molecular Biology and Biotechnology, Faculty of Biology and Geology, Babeș-Bolyai University, Cluj-Napoca, 400006, Romania; Molecular Biology Centre, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, Cluj-Napoca, 400271, Romania.
| | - Octavian Popescu
- Institute of Biology Bucharest of Romanian Academy, Bucharest, 060031, Romania; Molecular Biology Centre, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, Cluj-Napoca, 400271, Romania; Emil G. Racoviță Institute, Babeș-Bolyai University, Cluj-Napoca, 400006, Romania
| | - Alexandru Brînzan
- Institute of Biology Bucharest of Romanian Academy, Bucharest, 060031, Romania
| | - Ion Pencea
- Department of Metallic Material Science and Physical Metallurgy, University Politehnica of Bucharest, Bucharest, 060042, Romania
| | - Cătălin Dobrinescu
- Department of Research-Development and Projects, Museum of National History and Archaeology, Constanţa, 900745, Romania
| | - Beatrice Kelemen
- Department of Molecular Biology and Biotechnology, Faculty of Biology and Geology, Babeș-Bolyai University, Cluj-Napoca, 400006, Romania; Molecular Biology Centre, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, Cluj-Napoca, 400271, Romania
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Tompkins YH, Choi J, Teng PY, Yamada M, Sugiyama T, Kim WK. Reduced bone formation and increased bone resorption drive bone loss in Eimeria infected broilers. Sci Rep 2023; 13:616. [PMID: 36635321 PMCID: PMC9837181 DOI: 10.1038/s41598-023-27585-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/04/2023] [Indexed: 01/13/2023] Open
Abstract
Coccidiosis is an economically significant disease in the global poultry industry, but little is known about the mechanisms of bone defects caused by coccidiosis; thus, the study focused on effects of coccidiosis on the bone homeostasis of young broiler chickens. A total of 480 male Cobb500 broilers were randomly allocated into four treatment groups, including an uninfected control consuming diet ad libitum, two infected groups were orally gavaged with two different concentrations of sporulated Eimeria oocysts, and an uninfected pair-fed group fed the same amount of feed as the high Eimeria-infected group consumed. Growth performance and feed intake were recorded, and samples were collected on 6 days post infection. Results indicated that coccidiosis increased systemic oxidative status and elevated immune response in bone marrow, suppressing bone growth rate (P < 0.05) and increasing bone resorption (P < 0.05) which led to lower bone mineral density (P < 0.05) and mineral content (P < 0.05) under Eimeria infection. With the same amount of feed intake, the uninfected pair-fed group showed a distinguished bone formation rate and bone resorption level compared with the Eimeria infected groups. In conclusion, inflammatory immune response and oxidative stress in broilers after Eimeria infection were closely associated with altered bone homeostasis, highlighting the role of inflammation and oxidative stress in broiler bone homeostasis during coccidiosis.
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Affiliation(s)
- Yuguo Hou Tompkins
- grid.213876.90000 0004 1936 738XDepartment of Poultry Science, University of Georgia, Athens, GA 30602 USA
| | - Janghan Choi
- grid.213876.90000 0004 1936 738XDepartment of Poultry Science, University of Georgia, Athens, GA 30602 USA
| | - Po-Yun Teng
- grid.213876.90000 0004 1936 738XDepartment of Poultry Science, University of Georgia, Athens, GA 30602 USA
| | - Masayoshi Yamada
- grid.260975.f0000 0001 0671 5144Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Nishi-ku, Niigata, 950-2181 Japan
| | - Toshie Sugiyama
- grid.260975.f0000 0001 0671 5144Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Nishi-ku, Niigata, 950-2181 Japan
| | - Woo Kyun Kim
- Department of Poultry Science, University of Georgia, Athens, GA, 30602, USA.
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Lai C, Heinemann J, Schleicher U, Schett G, Bogdan C, Bozec A, Soulat D. Chronic Systemic Infection of Mice with Leishmania infantum Leads to Increased Bone Mass. J Bone Miner Res 2023; 38:86-102. [PMID: 36332102 DOI: 10.1002/jbmr.4733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 10/20/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022]
Abstract
Vector-borne infections of humans with the protozoan parasite Leishmania (L.) infantum can cause a systemic and potentially lethal disease termed visceral leishmaniasis. In the corresponding mouse model, an intravenous infection with L. infantum leads to the persistence of parasites in various organs, including bone marrow (BM). Considering the anatomical proximity between the BM and the cortical bone, we investigated whether a chronic infection with L. infantum affected bone homeostasis. Unexpectedly, chronic infection with L. infantum caused an increase in bone mass in mice. In vivo, an increased number of osteoblasts and osteocytes and a decreased maturation of osteoclasts characterized the phenotype. Confocal laser scanning fluorescence microscopy confirmed the infection of BM macrophages but also revealed the presence of parasites in osteoclasts. In vitro, mature osteoclasts took up L. infantum parasites. However, infection of osteoclast progenitors abolished their differentiation and function. In addition, secretory products of infected BM-derived macrophages inhibited the maturation of osteoclasts. Both in vitro and in vivo, infected macrophages and osteoclasts showed an enhanced expression of the anti-osteoclastogenic chemokine CCL5 (RANTES). Neutralization of CCL5 prevented the inhibition of osteoclast generation seen in the presence of culture supernatants from L. infantum-infected macrophages. Altogether, our study shows that chronic infection with Leishmania increases bone mass by inducing bone formation and impairing osteoclast differentiation and function. © 2022 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Chaobo Lai
- Mikrobiologisches Institut-Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Jennifer Heinemann
- Mikrobiologisches Institut-Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Ulrike Schleicher
- Mikrobiologisches Institut-Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Georg Schett
- Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Christian Bogdan
- Mikrobiologisches Institut-Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Aline Bozec
- Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Didier Soulat
- Mikrobiologisches Institut-Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
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Tompkins YH, Teng P, Pazdro R, Kim WK. Long Bone Mineral Loss, Bone Microstructural Changes and Oxidative Stress After Eimeria Challenge in Broilers. Front Physiol 2022; 13:945740. [PMID: 35923236 PMCID: PMC9340159 DOI: 10.3389/fphys.2022.945740] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/14/2022] [Indexed: 11/24/2022] Open
Abstract
The objective of this study was to evaluate the impact of coccidiosis on bone quality and antioxidant status in the liver and bone marrow of broiler chickens. A total of 360 13-day old male broilers (Cobb 500) were randomly assigned to different groups (negative control, low, medium-low, medium-high, and highest dose groups) and orally gavaged with different concentrations of Eimeria oocysts solution. Broiler tibia and tibia bone marrow were collected at 6 days post-infection (6 dpi) for bone 3-D structural analyses and the gene expression related to osteogenesis, oxidative stress, and adipogenesis using micro-computed tomography (micro-CT) and real-time qPCR analysis, respectively. Metaphyseal bone mineral density and content were reduced in response to the increase of Eimeria challenge dose, and poor trabecular bone traits were observed in the high inoculation group. However, there were no significant structural changes in metaphyseal cortical bone. Medium-high Eimeria challenge dose significantly increased level of peroxisome proliferator-activated receptor gamma (PPARG, p < 0.05) and decreased levels of bone gamma-carboxyglutamate protein coding gene (BGLAP, p < 0.05) and fatty acid synthase coding gene (FASN, p < 0.05) in bone marrow. An increased mRNA level of superoxide dismutase type 1 (SOD1, p < 0.05) and heme oxygenase 1 (HMOX1, p < 0.05), and increased enzyme activity of superoxide dismutase (SOD, p < 0.05) were found in bone marrow of Eimeria challenged groups compared with that of non-infected control. Similarly, enzyme activity of SOD and the mRNA level of SOD1, HMOX1 and aflatoxin aldehyde reductase (AKE7A2) were increased in the liver of infected broilers (p < 0.05), whereas glutathione (GSH) content was lower in the medium-high challenge group (p < 0.05) compared with non-challenged control. Moreover, the mRNA expression of catalase (CAT) and nuclear factor kappa B1 (NFKB1) showed dose-depend response in the liver, where expression of CAT and NFKB1 was upregulated in the low challenge group but decreased with the higher Eimeria challenge dosage (p < 0.05). In conclusion, high challenge dose of Eimeria infection negatively affected the long bone development. The structural changes of tibia and decreased mineral content were mainly located at the trabecular bone of metaphyseal area. The change of redox and impaired antioxidant status following the Eimeria infection were observed in the liver and bone marrow of broilers.
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Affiliation(s)
- Y. H. Tompkins
- Department of Poultry Science, University of Georgia, Athens, GA, United States
| | - P. Teng
- Department of Poultry Science, University of Georgia, Athens, GA, United States
| | - R. Pazdro
- Department of Foods and Nutrition, University of Georgia, Athens, GA, United States
| | - W. K. Kim
- Department of Poultry Science, University of Georgia, Athens, GA, United States
- *Correspondence: W. K. Kim,
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Matz JM. Plasmodium’s bottomless pit: properties and functions of the malaria parasite's digestive vacuole. Trends Parasitol 2022; 38:525-543. [DOI: 10.1016/j.pt.2022.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/21/2022] [Accepted: 02/21/2022] [Indexed: 11/30/2022]
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11
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Lee MSJ, Inoue T, Ise W, Matsuo-Dapaah J, Wing JB, Temizoz B, Kobiyama K, Hayashi T, Patil A, Sakaguchi S, Simon AK, Bezbradica JS, Nagatoishi S, Tsumoto K, Inoue JI, Akira S, Kurosaki T, Ishii KJ, Coban C. B cell-intrinsic TBK1 is essential for germinal center formation during infection and vaccination in mice. J Exp Med 2022; 219:212912. [PMID: 34910106 PMCID: PMC8679780 DOI: 10.1084/jem.20211336] [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: 06/24/2021] [Revised: 10/20/2021] [Accepted: 11/17/2021] [Indexed: 01/30/2023] Open
Abstract
The germinal center (GC) is a site where somatic hypermutation and clonal selection are coupled for antibody affinity maturation against infections. However, how GCs are formed and regulated is incompletely understood. Here, we identified an unexpected role of Tank-binding kinase-1 (TBK1) as a crucial B cell–intrinsic factor for GC formation. Using immunization and malaria infection models, we show that TBK1-deficient B cells failed to form GC despite normal Tfh cell differentiation, although some malaria-infected B cell–specific TBK1-deficient mice could survive by GC-independent mechanisms. Mechanistically, TBK1 phosphorylation elevates in B cells during GC differentiation and regulates the balance of IRF4/BCL6 expression by limiting CD40 and BCR activation through noncanonical NF-κB and AKTT308 signaling. In the absence of TBK1, CD40 and BCR signaling synergistically enhanced IRF4 expression in Pre-GC, leading to BCL6 suppression, and therefore failed to form GCs. As a result, memory B cells generated from TBK1-deficient B cells fail to confer sterile immunity upon reinfection, suggesting that TBK1 determines B cell fate to promote long-lasting humoral immunity.
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Affiliation(s)
- Michelle S J Lee
- Division of Malaria Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Takeshi Inoue
- Laboratory of Lymphocyte Differentiation, Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Wataru Ise
- Laboratory of Lymphocyte Differentiation, Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Julia Matsuo-Dapaah
- Division of Malaria Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - James B Wing
- Laboratory of Human Immunology (Single Cell Immunology), Immunology Frontier Research Center, Osaka University, Osaka, Japan.,Human Single Cell Immunology Team, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan
| | - Burcu Temizoz
- Division of Vaccine Science, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Kouji Kobiyama
- Division of Vaccine Science, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Tomoya Hayashi
- Division of Vaccine Science, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | | | - Shimon Sakaguchi
- Laboratory of Experimental Immunology, Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - A Katharina Simon
- The Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Jelena S Bezbradica
- The Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Satoru Nagatoishi
- Research Platform Office, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Kouhei Tsumoto
- Research Platform Office, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Jun-Ichiro Inoue
- Research Platform Office, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Shizuo Akira
- Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Tomohiro Kurosaki
- Laboratory of Lymphocyte Differentiation, Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Ken J Ishii
- Division of Vaccine Science, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Immunology Frontier Research Center, Osaka University, Osaka, Japan.,International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Cevayir Coban
- Division of Malaria Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Immunology Frontier Research Center, Osaka University, Osaka, Japan.,International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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12
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Pack AD, Schwartzhoff PV, Zacharias ZR, Fernandez-Ruiz D, Heath WR, Gurung P, Legge KL, Janse CJ, Butler NS. Hemozoin-mediated inflammasome activation limits long-lived anti-malarial immunity. Cell Rep 2021; 36:109586. [PMID: 34433049 PMCID: PMC8432597 DOI: 10.1016/j.celrep.2021.109586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/21/2021] [Accepted: 07/30/2021] [Indexed: 12/04/2022] Open
Abstract
During acute malaria, most individuals mount robust inflammatory responses that limit parasite burden. However, long-lived sterilizing anti-malarial memory responses are not efficiently induced, even following repeated Plasmodium exposures. Using multiple Plasmodium species, genetically modified parasites, and combinations of host genetic and pharmacologic approaches, we find that the deposition of the malarial pigment hemozoin directly limits the abundance and capacity of conventional type 1 dendritic cells to prime helper T cell responses. Hemozoin-induced dendritic cell dysfunction results in aberrant Plasmodium-specific CD4 T follicular helper cell differentiation, which constrains memory B cell and long-lived plasma cell formation. Mechanistically, we identify that dendritic cell-intrinsic NLRP3 inflammasome activation reduces conventional type 1 dendritic cell abundance, phagocytosis, and T cell priming functions in vivo. These data identify biological consequences of hemozoin deposition during malaria and highlight the capacity of the malarial pigment to program immune evasion during the earliest events following an initial Plasmodium exposure.
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Affiliation(s)
- Angela D Pack
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, USA
| | | | - Zeb R Zacharias
- Department of Pathology, University of Iowa, Iowa City, IA, USA
| | - Daniel Fernandez-Ruiz
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, VIC 3000, Australia
| | - William R Heath
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, VIC 3000, Australia; ARC Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Parkville, VIC 3010, Australia
| | - Prajwal Gurung
- Department of Internal Medicine, University of Iowa, Iowa City, IA, USA; Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, USA
| | - Kevin L Legge
- Department of Pathology, University of Iowa, Iowa City, IA, USA; Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, USA
| | - Chris J Janse
- Leiden Malaria Research Group, Centre of Infectious Diseases, Leiden University Medical Centre, Leiden 233 ZA, the Netherlands
| | - Noah S Butler
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, USA; Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, USA.
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13
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Li W, Wei C, Xu L, Yu B, Chen Y, Lu D, Zhang L, Song X, Dong L, Zhou S, Xu Z, Zhu J, Chen X, Su C. Schistosome infection promotes osteoclast-mediated bone loss. PLoS Pathog 2021; 17:e1009462. [PMID: 33735306 PMCID: PMC8009420 DOI: 10.1371/journal.ppat.1009462] [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: 06/06/2020] [Revised: 03/30/2021] [Accepted: 03/09/2021] [Indexed: 12/24/2022] Open
Abstract
Infection with schistosome results in immunological changes that might influence the skeletal system by inducing immunological states affecting bone metabolism. We investigated the relationships between chronic schistosome infection and bone metabolism by using a mouse model of chronic schistosomiasis, affecting millions of humans worldwide. Results showed that schistosome infection resulted in aberrant osteoclast-mediated bone loss, which was accompanied with an increased level of receptor activator of nuclear factor-κB (NF-κB) Ligand (RANKL) and decreased level of osteoprotegerin (OPG). The blockade of RANKL by the anti-RANKL antibody could prevent bone loss in the context of schistosome infection. Meanwhile, both B cells and CD4+ T cells, particularly follicular helper T (Tfh) cell subset, were the important cellular sources of RANKL during schistosome infection. These results highlight the risk of bone loss in schistosome-infected patients and the potential benefit of coupling bone therapy with anti-schistosome treatment. Schistosomiasis remains an important public health problem in many countries in tropical and subtropical regions, which affects about 200 million people worldwide, with another 700 million considered at risk of infection. Although the primary cause of pathogenesis of schistosomiasis is the granulomatous inflammatory responses, schistosomiasis patients experience long-term hidden pathologies that remain poorly investigated. Here, we found that schistosome infection resulted in RANKL-associated bone loss. Furthermore, our results indicated that both B cells and CD4+ T cells, particularly Tfh cell subset, in the peripheral lymphoid tissues are likely to be the important contributors to bone loss through releasing soluble RANKL. In addition, Tfh cells played a sufficient but not necessary role in schistosome infection-induced bone loss. Our findings highlight the risk of bone loss in schistosome-infected patients and the potential benefit of coupling bone therapy with anti-schistosome treatment.
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Affiliation(s)
- Wei Li
- Department of Clinical Laboratory, Nanjing First Hospital, Nanjing Medical University, Nanjing, P. R. China
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Chuan Wei
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Lei Xu
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Beibei Yu
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Ying Chen
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Di Lu
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Lina Zhang
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Xian Song
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Liyang Dong
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Sha Zhou
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Zhipeng Xu
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Jifeng Zhu
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
| | - Xiaojun Chen
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
- * E-mail: (XC); (CS)
| | - Chuan Su
- State Key Lab of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, P. R. China
- * E-mail: (XC); (CS)
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14
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Loufouma Mbouaka A, Gamble M, Wurst C, Jäger HY, Maixner F, Zink A, Noedl H, Binder M. The elusive parasite: comparing macroscopic, immunological, and genomic approaches to identifying malaria in human skeletal remains from Sayala, Egypt (third to sixth centuries AD). ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES 2021; 13:115. [PMID: 34149953 PMCID: PMC8202054 DOI: 10.1007/s12520-021-01350-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 04/19/2021] [Indexed: 05/12/2023]
Abstract
UNLABELLED Although malaria is one of the oldest and most widely distributed diseases affecting humans, identifying and characterizing its presence in ancient human remains continue to challenge researchers. We attempted to establish a reliable approach to detecting malaria in human skeletons using multiple avenues of analysis: macroscopic observations, rapid diagnostic tests, and shotgun-capture sequencing techniques, to identify pathological changes, Plasmodium antigens, and Plasmodium DNA, respectively. Bone and tooth samples from ten individuals who displayed skeletal lesions associated with anaemia, from a site in southern Egypt (third to sixth centuries AD), were selected. Plasmodium antigens were detected in five of the ten bone samples, and traces of Plasmodium aDNA were detected in six of the twenty bone and tooth samples. There was relatively good synchronicity between the biomolecular findings, despite not being able to authenticate the results. This study highlights the complexity and limitations in the conclusive identification of the Plasmodium parasite in ancient human skeletons. Limitations regarding antigen and aDNA preservation and the importance of sample selection are at the forefront of the search for malaria in the past. We confirm that, currently, palaeopathological changes such as cribra orbitalia are not enough to be certain of the presence of malaria. While biomolecular methods are likely the best chance for conclusive identification, we were unable to obtain results which correspond to the current authentication criteria of biomolecules. This study represents an important contribution in the refinement of biomolecular techniques used; also, it raises new insight regarding the consistency of combining several approaches in the identification of malaria in past populations. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s12520-021-01350-z.
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Affiliation(s)
- Alvie Loufouma Mbouaka
- Institute of Specific Prophylaxis and Tropical Medicine, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Kinderspitalgasse 15, 1090 Vienna, Austria
| | - Michelle Gamble
- Bioarchaeology Department, Austrian Archaeological Institute at the Austrian Academy of Sciences, Franz Klein-Gasse 1, 1190 Vienna, Austria
- Present Address: Heritage and Archaeological Research Practice, 101 Rose Street South Lane, EH2 3JG Edinburgh, Scotland
| | - Christina Wurst
- Institute for Mummy Studies, EURAC Research, Viale Druso 1, 39100 Bolzano, Italy
| | - Heidi Yoko Jäger
- Institute for Mummy Studies, EURAC Research, Viale Druso 1, 39100 Bolzano, Italy
| | - Frank Maixner
- Institute for Mummy Studies, EURAC Research, Viale Druso 1, 39100 Bolzano, Italy
| | - Albert Zink
- Institute for Mummy Studies, EURAC Research, Viale Druso 1, 39100 Bolzano, Italy
| | - Harald Noedl
- Institute of Specific Prophylaxis and Tropical Medicine, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Kinderspitalgasse 15, 1090 Vienna, Austria
- Present Address: Malaria Research Initiative Bandarban, Vienna, Austria
| | - Michaela Binder
- Bioarchaeology Department, Austrian Archaeological Institute at the Austrian Academy of Sciences, Franz Klein-Gasse 1, 1190 Vienna, Austria
- Present Address: Planen und Bauen im Bestand, Novetus, Belvederegasse 41, 1040 Vienna, Austria
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15
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Haltalli MLR, Watcham S, Wilson NK, Eilers K, Lipien A, Ang H, Birch F, Anton SG, Pirillo C, Ruivo N, Vainieri ML, Pospori C, Sinden RE, Luis TC, Langhorne J, Duffy KR, Göttgens B, Blagborough AM, Lo Celso C. Manipulating niche composition limits damage to haematopoietic stem cells during Plasmodium infection. Nat Cell Biol 2020; 22:1399-1410. [PMID: 33230302 PMCID: PMC7611033 DOI: 10.1038/s41556-020-00601-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 10/06/2020] [Indexed: 12/17/2022]
Abstract
Severe infections are a major stress on haematopoiesis, where the consequences for haematopoietic stem cells (HSCs) have only recently started to emerge. HSC function critically depends on the integrity of complex bone marrow (BM) niches; however, what role the BM microenvironment plays in mediating the effects of infection on HSCs remains an open question. Here, using a murine model of malaria and combining single-cell RNA sequencing, mathematical modelling, transplantation assays and intravital microscopy, we show that haematopoiesis is reprogrammed upon infection, whereby the HSC compartment turns over substantially faster than at steady-state and HSC function is drastically affected. Interferon is found to affect both haematopoietic and mesenchymal BM cells and we specifically identify a dramatic loss of osteoblasts and alterations in endothelial cell function. Osteo-active parathyroid hormone treatment abolishes infection-triggered HSC proliferation and-coupled with reactive oxygen species quenching-enables partial rescuing of HSC function.
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Affiliation(s)
- Myriam L R Haltalli
- Department of Life Sciences, Imperial College London, London, UK
- The Francis Crick Institute, London, UK
- Wellcome-Medical Research Council Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
- Department of Haematology, Cambridge Institute for Medical Research, Cambridge, UK
| | - Samuel Watcham
- Wellcome-Medical Research Council Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
- Department of Haematology, Cambridge Institute for Medical Research, Cambridge, UK
| | - Nicola K Wilson
- Wellcome-Medical Research Council Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
- Department of Haematology, Cambridge Institute for Medical Research, Cambridge, UK
| | - Kira Eilers
- Department of Life Sciences, Imperial College London, London, UK
| | - Alexander Lipien
- Department of Life Sciences, Imperial College London, London, UK
| | - Heather Ang
- Department of Life Sciences, Imperial College London, London, UK
| | - Flora Birch
- Department of Life Sciences, Imperial College London, London, UK
- The Francis Crick Institute, London, UK
| | - Sara Gonzalez Anton
- Department of Life Sciences, Imperial College London, London, UK
- The Francis Crick Institute, London, UK
| | - Chiara Pirillo
- Department of Life Sciences, Imperial College London, London, UK
- The Francis Crick Institute, London, UK
| | - Nicola Ruivo
- Department of Life Sciences, Imperial College London, London, UK
| | - Maria L Vainieri
- Department of Life Sciences, Imperial College London, London, UK
- AO Research Institute, Davos Platz, Switzerland
| | - Constandina Pospori
- Department of Life Sciences, Imperial College London, London, UK
- The Francis Crick Institute, London, UK
| | - Robert E Sinden
- Department of Life Sciences, Imperial College London, London, UK
| | - Tiago C Luis
- Department of Life Sciences, Imperial College London, London, UK
| | | | - Ken R Duffy
- Hamilton Institute, Maynooth University, Maynooth, Ireland
| | - Berthold Göttgens
- Wellcome-Medical Research Council Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
- Department of Haematology, Cambridge Institute for Medical Research, Cambridge, UK
| | | | - Cristina Lo Celso
- Department of Life Sciences, Imperial College London, London, UK.
- The Francis Crick Institute, London, UK.
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16
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Oliveira TC, Gomes MS, Gomes AC. The Crossroads between Infection and Bone Loss. Microorganisms 2020; 8:microorganisms8111765. [PMID: 33182721 PMCID: PMC7698271 DOI: 10.3390/microorganisms8111765] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/05/2020] [Accepted: 11/09/2020] [Indexed: 01/18/2023] Open
Abstract
Bone homeostasis, based on a tight balance between bone formation and bone degradation, is affected by infection. On one hand, some invading pathogens are capable of directly colonizing the bone, leading to its destruction. On the other hand, immune mediators produced in response to infection may dysregulate the deposition of mineral matrix by osteoblasts and/or the resorption of bone by osteoclasts. Therefore, bone loss pathologies may develop in response to infection, and their detection and treatment are challenging. Possible biomarkers of impaired bone metabolism during chronic infection need to be identified to improve the diagnosis and management of infection-associated osteopenia. Further understanding of the impact of infections on bone metabolism is imperative for the early detection, prevention, and/or reversion of bone loss. Here, we review the mechanisms responsible for bone loss as a direct and/or indirect consequence of infection.
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Affiliation(s)
- Tiago Carvalho Oliveira
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (T.C.O.); (M.S.G.)
- Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal
- Instituto de Ciências Biomédicas de Abel Salazar da Universidade do Porto, 4050-313 Porto, Portugal
| | - Maria Salomé Gomes
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (T.C.O.); (M.S.G.)
- Instituto de Ciências Biomédicas de Abel Salazar da Universidade do Porto, 4050-313 Porto, Portugal
| | - Ana Cordeiro Gomes
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (T.C.O.); (M.S.G.)
- Correspondence:
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17
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Coban C. The host targeting effect of chloroquine in malaria. Curr Opin Immunol 2020; 66:98-107. [PMID: 32823144 PMCID: PMC7431399 DOI: 10.1016/j.coi.2020.07.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/21/2020] [Accepted: 07/21/2020] [Indexed: 01/07/2023]
Abstract
Due to the rapid onset and spread of the COVID-19 pandemic, the treatment of COVID-19 patients by hydroxychloroquine alone or in combination with other drugs has captured a great deal of attention and triggered considerable debate. Historically, the worldwide use of quinoline based-drugs has led to a spectacular reduction in death from malaria. Unfortunately, scientists have been forced to seek alternative drugs to treat malaria due to the emergence of chloroquine-resistant parasites in the 1960s. The repurposing of hydroxychloroquine against viral infections, various types of cancer and autoimmune diseases has been ongoing for more than 70 years, with no clear understanding of its mechanism of action (MOA). Here, we closely examine the MOA of this old but influential drug in and beyond malaria. Better insights into how chloroquine targets the host's cellular and immune responses may help to develop applications against to new pathogens and diseases, and perhaps even restore the clinical utility of chloroquine against malaria.
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Affiliation(s)
- Cevayir Coban
- Division of Malaria Immunology, Department of Microbiology and Immunology, The Institute of Medical Science (IMSUT), The University of Tokyo, Tokyo, Japan; Laboratory of Malaria Immunology, Immunology Frontier Research Center (IFReC), Osaka University, Osaka, Japan.
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18
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Mazzaferro S, De Martini N, Rotondi S, Tartaglione L, Ureña-Torres P, Bover J, Pasquali M. Bone, inflammation and chronic kidney disease. Clin Chim Acta 2020; 506:236-240. [PMID: 32275989 DOI: 10.1016/j.cca.2020.03.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/27/2020] [Accepted: 03/27/2020] [Indexed: 01/04/2023]
Abstract
Increasing knowledge on inflammatory mediators and bone metabolism highlights the relationship between inflammation and bone disease. During acute illness, inflammatory cells and cytokines modulate bone cells activity so as to mobilize calcium seemingly to supply the metabolic requirements for immune response. In case of long lasting, chronic inflammatory states a condition of maladaptive, smouldering inflammation is realized and negatively affects calcium bone balance. Aging, now nicknamed inflammaging, is regarded as a chronic inflammatory condition, characterized by increased circulating inflammatory cytokines, that contributes to the development of osteoporosis, cardiovascular diseases and chronic kidney disease. In patients with renal insufficiency, the development of bone and mineral disorders (so called CKD-MBD "syndrome") is now a recognized pathogenic factor for the seemingly accelerated process of aging and for the increased risk of cardiovascular death in these patients. The adaptive changes in mineral and bone metabolism developing in the early stages of chronic kidney disease could represent a hypothetical model of accelerated aging, osteoporosis and cardiovascular disease.
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Affiliation(s)
- Sandro Mazzaferro
- Department of Translational and Precision Medicine, Sapienza University, Rome, Italy.
| | - Natalia De Martini
- Department of Translational and Precision Medicine, Sapienza University, Rome, Italy.
| | | | - Lida Tartaglione
- Department of Translational and Precision Medicine, Sapienza University, Rome, Italy.
| | - Pablo Ureña-Torres
- AURA Nord Saint Ouen, Saint Ouen, France; Department of Renal Physiology, Necker Hospital, University of Paris Descartes, Paris, France.
| | - Jordi Bover
- Fundació Puigvert, Department of Nephrology, IIB Sant Pau, Universitat Autònoma, RedinRen, Barcelona, Catalonia, Spain.
| | - Marzia Pasquali
- Azienda Ospedaliero-Universitaria Policlinico Umberto I, Roma, Italy.
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19
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Dobbs KR, Crabtree JN, Dent AE. Innate immunity to malaria-The role of monocytes. Immunol Rev 2020; 293:8-24. [PMID: 31840836 PMCID: PMC6986449 DOI: 10.1111/imr.12830] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/19/2019] [Accepted: 11/25/2019] [Indexed: 12/12/2022]
Abstract
Monocytes are innate immune cells essential for host protection against malaria. Upon activation, monocytes function to help reduce parasite burden through phagocytosis, cytokine production, and antigen presentation. However, monocytes have also been implicated in the pathogenesis of severe disease through production of damaging inflammatory cytokines, resulting in systemic inflammation and vascular dysfunction. Understanding the molecular pathways influencing the balance between protection and pathology is critical. In this review, we discuss recent data regarding the role of monocytes in human malaria, including studies of innate sensing of the parasite, immunometabolism, and innate immune training. Knowledge gained from these studies may guide rational development of novel antimalarial therapies and inform vaccine development.
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Affiliation(s)
- Katherine R. Dobbs
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH, USA
- Division of Pediatric Infectious Diseases, University Hospitals Rainbow Babies and Children’s Hospital, Cleveland, OH, USA
| | - Juliet N. Crabtree
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Arlene E. Dent
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH, USA
- Division of Pediatric Infectious Diseases, University Hospitals Rainbow Babies and Children’s Hospital, Cleveland, OH, USA
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20
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Batsivari A, Haltalli MLR, Passaro D, Pospori C, Lo Celso C, Bonnet D. Dynamic responses of the haematopoietic stem cell niche to diverse stresses. Nat Cell Biol 2020; 22:7-17. [PMID: 31907409 DOI: 10.1038/s41556-019-0444-9] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/27/2019] [Indexed: 01/01/2023]
Abstract
Adult haematopoietic stem cells (HSCs) mainly reside in the bone marrow, where stromal and haematopoietic cells regulate their function. The steady state HSC niche has been extensively studied. In this Review, we focus on how bone marrow microenvironment components respond to different insults including inflammation, malignant haematopoiesis and chemotherapy. We highlight common and unique patterns among multiple cell types and their environment and discuss current limitations in our understanding of this complex and dynamic tissue.
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Affiliation(s)
- Antoniana Batsivari
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute , London, UK
| | - Myriam Luydmila Rachelle Haltalli
- Department of Life Sciences, Imperial College London, South Kensington campus, London, UK
- Lo Celso Laboratory, The Francis Crick Institute, London, UK
| | - Diana Passaro
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute , London, UK
| | - Constandina Pospori
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute , London, UK
- Department of Life Sciences, Imperial College London, South Kensington campus, London, UK
- Lo Celso Laboratory, The Francis Crick Institute, London, UK
| | - Cristina Lo Celso
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute , London, UK.
- Department of Life Sciences, Imperial College London, South Kensington campus, London, UK.
- Lo Celso Laboratory, The Francis Crick Institute, London, UK.
| | - Dominique Bonnet
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute , London, UK.
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21
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De Niz M, Meehan GR, Tavares J. Intravital microscopy: Imaging host-parasite interactions in lymphoid organs. Cell Microbiol 2019; 21:e13117. [PMID: 31512335 DOI: 10.1111/cmi.13117] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/25/2019] [Accepted: 09/01/2019] [Indexed: 12/11/2022]
Abstract
Intravital microscopy allows imaging of biological phenomena within living animals, including host-parasite interactions. This has advanced our understanding of both, the function of lymphoid organs during parasitic infections, and the effect of parasites on such organs to allow their survival. In parasitic research, recent developments in this technique have been crucial for the direct study of host-parasite interactions within organs at depths, speeds and resolution previously difficult to achieve. Lymphoid organs have gained more attention as we start to understand their function during parasitic infections and the effect of parasites on them. In this review, we summarise technical and biological findings achieved by intravital microscopy with respect to the interaction of various parasites with host lymphoid organs, namely the bone marrow, thymus, lymph nodes, spleen and the mucosa-associated lymphoid tissue, and present a view into possible future applications.
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Affiliation(s)
- Mariana De Niz
- Institute of Cell Biology, Heussler Lab, University of Bern, Bern, Switzerland
| | - Gavin R Meehan
- Wellcome Centre for Integrative Parasitology, University of Glasgow, Glasgow, UK
| | - Joana Tavares
- i3S-Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal.,IBMC-Instituto de Biologia Molecular e Celular, University of Porto, Porto, Portugal
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22
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The role of bone cells in immune regulation during the course of infection. Semin Immunopathol 2019; 41:619-626. [PMID: 31552472 DOI: 10.1007/s00281-019-00755-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 09/05/2019] [Indexed: 12/18/2022]
Abstract
Bone homeostasis depends on a balance between osteoclastic bone resorption and osteoblastic bone formation. Bone cells are regulated by a variety of biochemical factors, such as hormones and cytokines, as well as various types of physical stress. The immune system affects bone, since such factors are dysregulated under pathologic conditions, including infection. The bone marrow, one of the primary lymphoid organs, provides a special microenvironment that supports the function and differentiation of immune cells and hematopoietic stem cells (HSCs). Thus, bone cells contribute to immune regulation by modulating immune cell differentiation and/or function through the maintenance of the bone marrow microenvironment. Although osteoblasts were first reported as the population that supports HSCs, the role of osteoblast-lineage cells in hematopoiesis has been shown to be more limited than previously expected. Osteoblasts are specifically involved in the differentiation of lymphoid cells under physiological and pathological conditions. It is of critical importance how bone cells are modified during inflammation and/or infection and how such modification affects the immune system.
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23
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Liang J, Bunck DN, Mishra A, Hong S, Idso MN, Heath JR. Inhibition of heme sequestration of histidine-rich protein 2 using multiple epitope-targeted peptides. J Pept Sci 2019; 25:e3203. [PMID: 31347248 DOI: 10.1002/psc.3203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 06/18/2019] [Accepted: 06/19/2019] [Indexed: 12/15/2022]
Abstract
Plasmodium falciparum is the most lethal species of malaria. In infected human red blood cells, P. falciparum digests hemoglobin as a nutrient source, liberating cytotoxic free heme in the process. Sequestration and subsequent conversion of this byproduct into hemozoin, an inert biocrystalline heme aggregate, plays a key role in parasite survival. Hemozoin has been a longstanding target of antimalarials such as chloroquine (CQ), which inhibit the biocrystallization of free heme. In this study, we explore heme-binding interactions with histidine-rich-protein 2 (HRP2), a known malarial biomarker and purported player in free heme sequestration. HRP2 is notoriously challenging to target due to its highly repetitious sequence and irregular secondary structure. We started with three protein-catalyzed capture agents (PCCs) developed against epitopes of HRP2, inclusive of heme-binding motifs, and explored their ability to inhibit heme:HRP2 complex formation. Cocktails of the individual PCCs exhibit an inhibitory potency similar to CQ, while a covalently linked structure built from two separate PCCs provided considerably increased inhibition relative to CQ. Epitope-targeted disruption of heme:HRP2 binding is a novel approach towards disrupting P. falciparum-related hemozoin formation.
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Affiliation(s)
- JingXin Liang
- Institute for Systems Biology, 401 Terry Ave North, Seattle, WA, 98109-5263, USA
| | - David N Bunck
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Blvd, Pasadena, CA, 91125, USA
| | - Anvita Mishra
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Blvd, Pasadena, CA, 91125, USA
| | - Sunga Hong
- Institute for Systems Biology, 401 Terry Ave North, Seattle, WA, 98109-5263, USA
| | - Matthew N Idso
- Institute for Systems Biology, 401 Terry Ave North, Seattle, WA, 98109-5263, USA
| | - James R Heath
- Institute for Systems Biology, 401 Terry Ave North, Seattle, WA, 98109-5263, USA
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24
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Osteoimmunology: evolving concepts in bone-immune interactions in health and disease. Nat Rev Immunol 2019; 19:626-642. [PMID: 31186549 DOI: 10.1038/s41577-019-0178-8] [Citation(s) in RCA: 362] [Impact Index Per Article: 72.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2019] [Indexed: 12/14/2022]
Abstract
In terrestrial vertebrates, bone tissue constitutes the 'osteoimmune' system, which functions as a locomotor organ and a mineral reservoir as well as a primary lymphoid organ where haematopoietic stem cells are maintained. Bone and mineral metabolism is maintained by the balanced action of bone cells such as osteoclasts, osteoblasts and osteocytes, yet subverted by aberrant and/or prolonged immune responses under pathological conditions. However, osteoimmune interactions are not restricted to the unidirectional effect of the immune system on bone metabolism. In recent years, we have witnessed the discovery of effects of bone cells on immune regulation, including the function of osteoprogenitor cells in haematopoietic stem cell regulation and osteoblast-mediated suppression of haematopoietic malignancies. Moreover, the dynamic reciprocal interactions between bone and malignancies in remote organs have attracted attention, extending the horizon of osteoimmunology. Here, we discuss emerging concepts in the osteoimmune dialogue in health and disease.
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25
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Peterson MS, Joyner CJ, Cordy RJ, Salinas JL, Machiah D, Lapp SA, Meyer EVS, Gumber S, Galinski MR. Plasmodium vivax Parasite Load Is Associated With Histopathology in Saimiri boliviensis With Findings Comparable to P vivax Pathogenesis in Humans. Open Forum Infect Dis 2019; 6:ofz021. [PMID: 30937329 PMCID: PMC6436601 DOI: 10.1093/ofid/ofz021] [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: 01/11/2019] [Accepted: 01/14/2019] [Indexed: 02/03/2023] Open
Abstract
Background Plasmodium vivax can cause severe malaria with multisystem organ dysfunction and death. Clinical reports suggest that parasite accumulation in tissues may contribute to pathogenesis and disease severity, but direct evidence is scarce. Methods We present quantitative parasitological and histopathological analyses of tissue sections from a cohort of naive, mostly splenectomized Saimiri boliviensis infected with P vivax to define the relationship of tissue parasite load and histopathology. Results The lung, liver, and kidney showed the most tissue injury, with pathological presentations similar to observations reported from autopsies. Parasite loads correlated with the degree of histopathologic changes in the lung and liver tissues. In contrast, kidney damage was not associated directly with parasite load but with the presence of hemozoin, an inflammatory parasite byproduct. Conclusions This analysis supports the use of the S boliviensis infection model for performing detailed histopathological studies to better understand and potentially design interventions to treat serious clinical manifestations caused by P vivax.
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Affiliation(s)
| | | | - Regina J Cordy
- Emory Vaccine Center, Yerkes National Primate Research Center
| | - Jorge L Salinas
- Emory Vaccine Center, Yerkes National Primate Research Center.,Division of Infectious Diseases, Department of Medicine, School of Medicine
| | - Deepa Machiah
- Division of Pathology, Yerkes National Primate Research Center
| | - Stacey A Lapp
- Emory Vaccine Center, Yerkes National Primate Research Center
| | | | | | - Sanjeev Gumber
- Division of Pathology, Yerkes National Primate Research Center.,Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia
| | - Mary R Galinski
- Emory Vaccine Center, Yerkes National Primate Research Center.,Division of Infectious Diseases, Department of Medicine, School of Medicine
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26
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Abstract
Systemic inflammation mediated by Plasmodium parasites is central to malaria disease and its complications. Plasmodium parasites reside in erythrocytes and can theoretically reach all host tissues via the circulation. However, actual interactions between parasitized erythrocytes and host tissues, along with the consequent damage and pathological changes, are limited locally to specific tissue sites. Such tissue specificity of the parasite can alter the outcome of malaria disease, determining whether acute or chronic complications occur. Here, we give an overview of the recent progress that has been made in understanding tissue-specific immunopathology during Plasmodium infection. As knowledge on tissue-specific host-parasite interactions accumulates, better treatment modalities and targets may emerge for intervention in malaria disease.
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27
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Lee MSJ, Coban C. Unforeseen pathologies caused by malaria. Int Immunol 2017; 30:121-129. [DOI: 10.1093/intimm/dxx076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 12/27/2017] [Indexed: 02/07/2023] Open
Affiliation(s)
- Michelle Sue Jann Lee
- Laboratory of Malaria Immunology, Immunology Frontier Research Center (IFReC), Osaka University, Japan
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28
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Foley JF. Papers of note in
Science Immunology
2
(12). Sci Signal 2017. [DOI: 10.1126/scisignal.aao2382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
This month’s articles show how
Plasmodium
by-products cause bone loss and how citrullination of an NF-κB subunit enhances inflammatory responses.
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