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Goossens PL. Bacillus anthracis, "la maladie du charbon", Toxins, and Institut Pasteur. Toxins (Basel) 2024; 16:66. [PMID: 38393144 PMCID: PMC10891547 DOI: 10.3390/toxins16020066] [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: 11/08/2023] [Revised: 12/25/2023] [Accepted: 12/30/2023] [Indexed: 02/25/2024] Open
Abstract
Institut Pasteur and Bacillus anthracis have enjoyed a relationship lasting almost 120 years, starting from its foundation and the pioneering work of Louis Pasteur in the nascent fields of microbiology and vaccination, and blooming after 1986 following the molecular biology/genetic revolution. This contribution will give a historical overview of these two research eras, taking advantage of the archives conserved at Institut Pasteur. The first era mainly focused on the production, characterisation, surveillance and improvement of veterinary anthrax vaccines; the concepts and technologies with which to reach a deep understanding of this research field were not yet available. The second period saw a new era of B. anthracis research at Institut Pasteur, with the anthrax laboratory developing a multi-disciplinary approach, ranging from structural analysis, biochemistry, genetic expression, and regulation to bacterial-host cell interactions, in vivo pathogenicity, and therapy development; this led to the comprehensive unravelling of many facets of this toxi-infection. B. anthracis may exemplify some general points on how science is performed in a given society at a given time and how a scientific research domain evolves. A striking illustration can be seen in the additive layers of regulations that were implemented from the beginning of the 21st century and their impact on B. anthracis research. B. anthracis and anthrax are complex systems that raise many valuable questions regarding basic research. One may hope that B. anthracis research will be re-initiated under favourable circumstances later at Institut Pasteur.
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Human iNKT Cells Modulate Macrophage Survival and Phenotype. Biomedicines 2022; 10:biomedicines10071723. [PMID: 35885028 PMCID: PMC9313099 DOI: 10.3390/biomedicines10071723] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 07/11/2022] [Accepted: 07/14/2022] [Indexed: 11/16/2022] Open
Abstract
CD1d-restricted invariant Natural Killer T (iNKT) cells are unconventional innate-like T cells whose functions highly depend on the interactions they establish with other immune cells. Although extensive studies have been reported on the communication between iNKT cells and macrophages in mice, less data is available regarding the relevance of this crosstalk in humans. Here, we dove into the human macrophage-iNKT cell axis by exploring how iNKT cells impact the survival and polarization of pro-inflammatory M1-like and anti-inflammatory M2-like monocyte-derived macrophages. By performing in vitro iNKT cell-macrophage co-cultures followed by flow cytometry analysis, we demonstrated that antigen-stimulated iNKT cells induce a generalized activated state on all macrophage subsets, leading to upregulation of CD40 and CD86 expression. CD40L blocking with a specific monoclonal antibody prior to co-cultures abrogated CD40 and CD86 upregulation, thus indicating that iNKT cells required CD40-CD40L co-stimulation to trigger macrophage activation. In addition, activated iNKT cells were cytotoxic towards macrophages in a CD1d-dependent manner, killing M1-like macrophages more efficiently than their naïve M0 or anti-inflammatory M2-like counterparts. Hence, this work highlighted the role of human iNKT cells as modulators of macrophage survival and phenotype, untangling key features of the human macrophage-iNKT cell axis and opening perspectives for future therapeutic modulation.
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Cruz MS, Loureiro JP, Oliveira MJ, Macedo MF. The iNKT Cell-Macrophage Axis in Homeostasis and Disease. Int J Mol Sci 2022; 23:ijms23031640. [PMID: 35163561 PMCID: PMC8835952 DOI: 10.3390/ijms23031640] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/24/2022] [Accepted: 01/27/2022] [Indexed: 12/12/2022] Open
Abstract
Invariant natural killer T (iNKT) cells are CD1d-restricted, lipid-reactive T cells that exhibit preponderant immunomodulatory properties. The ultimate protective or deleterious functions displayed by iNKT cells in tissues are known to be partially shaped by the interactions they establish with other immune cells. In particular, the iNKT cell–macrophage crosstalk has gained growing interest over the past two decades. Accumulating evidence has highlighted that this immune axis plays central roles not only in maintaining homeostasis but also during the development of several pathologies. Hence, this review summarizes the reported features of the iNKT cell–macrophage axis in health and disease. We discuss the pathophysiological significance of this interplay and provide an overview of how both cells communicate with each other to regulate disease onset and progression in the context of infection, obesity, sterile inflammation, cancer and autoimmunity.
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Affiliation(s)
- Mariana S. Cruz
- Cell Activation and Gene Expression Group, Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (M.S.C.); (J.P.L.)
- Department of Medical Sciences, University of Aveiro (UA), 3810-193 Aveiro, Portugal
| | - José Pedro Loureiro
- Cell Activation and Gene Expression Group, Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (M.S.C.); (J.P.L.)
- Experimental Immunology Group, Department of Biomedicine (DBM), University of Basel and University Hospital Basel, Hebelstrasse 20, 4031 Basel, Switzerland
| | - Maria J. Oliveira
- Tumour and Microenvironment Interactions Group, Instituto Nacional de Engenharia Biomédica (INEB), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal;
- Department of Molecular Biology, ICBAS-Institute of Biomedical Sciences Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Maria Fatima Macedo
- Cell Activation and Gene Expression Group, Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (M.S.C.); (J.P.L.)
- Department of Medical Sciences, University of Aveiro (UA), 3810-193 Aveiro, Portugal
- Correspondence:
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Pradines B, Rogier C. Contribution of the French army health service in support of expertise and research in infectiology in Africa. New Microbes New Infect 2018; 26:S78-S82. [PMID: 30402247 PMCID: PMC6205563 DOI: 10.1016/j.nmni.2018.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 05/24/2018] [Accepted: 05/25/2018] [Indexed: 11/29/2022] Open
Abstract
Historically, infectious diseases have caused more casualties than battle. The French military health service therefore developed a range of research on vector-borne diseases such as malaria and arboviruses, antibiotic resistance, infectious agents that can be used as biological weapons and vaccines. The main objective is to control naturally acquired or provoked infectious diseases and limit their impact on armed forces as well as on civilian populations in France or abroad, particularly in Africa and anywhere French armies may be deployed. The expertise of the military health service teams in manipulating agents requiring high level of biosafety precautions and in organizing and providing medical care in unnatural conditions, including the battlefield, associated with complementarity staff experience (physicians, biologists, epidemiologists, researchers, pharmacists, logisticians), has been used in the management of the Ebola outbreak in Guinea.
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Affiliation(s)
- B. Pradines
- Unité Parasitologie et entomologie, Département des maladies infectieuses, Institut de recherche biomédicale des armées, Institut hospitalo-universitaire (IHU) Méditerranée Infection, Marseille, France
- Aix-Marseille Université, IRD, AP-HM, SSA, VITROME, IHU-Méditerranée Infection, Marseille, France
- Centre national de référence du paludisme, Institut hospitalo-universitaire (IHU) Méditerranée Infection, Marseille, France
| | - C. Rogier
- Division Expertise et stratégie santé de défense, Direction centrale du service de santé des armées, Paris, France
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Le Gars M, Haustant M, Klezovich-Benard M, Paget C, Trottein F, Goossens PL, Tournier JN. [iNKT cells: potential therapeutic targets to fight anthrax]. Med Sci (Paris) 2017; 33:488-490. [PMID: 28612722 DOI: 10.1051/medsci/20173305010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Mathieu Le Gars
- Pathogénie des toxi-infections bactériennes, Institut Pasteur, 28, rue du Docteur Roux, 75724 Paris, France - Blish lab, department of medicine, Stanford immunology, Stanford university, Stanford, CA, États-Unis
| | - Michel Haustant
- Pathogénie des toxi-infections bactériennes, Institut Pasteur, 28, rue du Docteur Roux, 75724 Paris, France
| | - Maria Klezovich-Benard
- Pathogénie des toxi-infections bactériennes, Institut Pasteur, 28, rue du Docteur Roux, 75724 Paris, France
| | - Christophe Paget
- Centre d'infection et d'immunité de Lille, Inserm U1019, CNRS UMR 8204, université de Lille, CHU Lille et Institut Pasteur de Lille, 1, rue du professeur Calmette, 59000 Lille, France
| | - François Trottein
- Centre d'infection et d'immunité de Lille, Inserm U1019, CNRS UMR 8204, université de Lille, CHU Lille et Institut Pasteur de Lille, 1, rue du professeur Calmette, 59000 Lille, France
| | - Pierre L Goossens
- Pathogénie des toxi-infections bactériennes, Institut Pasteur, 28, rue du Docteur Roux, 75724 Paris, France
| | - Jean-Nicolas Tournier
- Pathogénie des toxi-infections bactériennes, Institut Pasteur, 28, rue du Docteur Roux, 75724 Paris, France - Unité interactions hôte-agents pathogènes, institut de recherche biomédicale des armées, BP73, 91223 Brétigny-sur-Orge, France
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