1
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Gern BH, Klas JM, Foster KA, Cohen SB, Plumlee CR, Duffy FJ, Neal ML, Halima M, Gustin AT, Diercks AH, Aderem A, Gale M, Aitchison JD, Gerner MY, Urdahl KB. CD4-mediated immunity shapes neutrophil-driven tuberculous pathology. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.12.589315. [PMID: 38659794 PMCID: PMC11042216 DOI: 10.1101/2024.04.12.589315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Pulmonary Mycobacterium tuberculosis (Mtb) infection results in highly heterogeneous lesions ranging from granulomas with central necrosis to those primarily comprised of alveolitis. While alveolitis has been associated with prior immunity in human post-mortem studies, the drivers of these distinct pathologic outcomes are poorly understood. Here, we show that these divergent lesion structures can be modeled in C3HeB/FeJ mice and are regulated by prior immunity. Using quantitative imaging, scRNAseq, and flow cytometry, we demonstrate that Mtb infection in the absence of prior immunity elicits dysregulated neutrophil recruitment and necrotic granulomas. In contrast, prior immunity induces rapid recruitment and activation of T cells, local macrophage activation, and diminished late neutrophil responses. Depletion studies at distinct infection stages demonstrated that neutrophils are required for early necrosis initiation and necrosis propagation at chronic stages, whereas early CD4 T cell responses prevent neutrophil feedforward circuits and necrosis. Together, these studies reveal fundamental determinants of tuberculosis lesion structure and pathogenesis, which have important implications for new strategies to prevent or treat tuberculosis.
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Affiliation(s)
- Benjamin H Gern
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
- University of Washington, Dept. of Pediatrics, Seattle, Washington, United States of America
| | - Josepha M Klas
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Kimberly A Foster
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
- University of Washington, Dept. of Immunology, Seattle, Washington, United States of America
| | - Sara B Cohen
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Courtney R Plumlee
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Fergal J Duffy
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Maxwell L Neal
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Mehnaz Halima
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Andrew T Gustin
- University of Washington, Dept. of Immunology, Seattle, Washington, United States of America
| | - Alan H Diercks
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Alan Aderem
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Michael Gale
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
- University of Washington, Dept. of Immunology, Seattle, Washington, United States of America
| | - John D Aitchison
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Michael Y Gerner
- University of Washington, Dept. of Immunology, Seattle, Washington, United States of America
| | - Kevin B Urdahl
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
- University of Washington, Dept. of Pediatrics, Seattle, Washington, United States of America
- University of Washington, Dept. of Immunology, Seattle, Washington, United States of America
- Lead Contact
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2
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Zhang K, Repnik U, Diab N, Friske D, Pütz A, Bachmann AZ, Gubbi NMKP, Hensel M, Förstner KU, Westermann AJ, Dupont A, Hornef MW. Non-professional efferocytosis of Salmonella-infected intestinal epithelial cells in the neonatal host. J Exp Med 2024; 221:e20231237. [PMID: 38305765 PMCID: PMC10837083 DOI: 10.1084/jem.20231237] [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: 07/17/2023] [Revised: 12/04/2023] [Accepted: 01/08/2024] [Indexed: 02/03/2024] Open
Abstract
The intestinal epithelium is the first line of defense against enteric pathogens. Removal of infected cells by exfoliation prevents mucosal translocation and systemic infection in the adult host, but is less commonly observed in the neonatal intestine. Instead, here, we describe non-professional efferocytosis of Salmonella-infected enterocytes by neighboring epithelial cells in the neonatal intestine. Intestinal epithelial stem cell organoid cocultures of neonatal and adult cell monolayers with damaged enterocytes replicated this observation, confirmed the age-dependent ability of intestinal epithelial cells for efferocytosis, and identified the involvement of the "eat-me" signals and adaptors phosphatidylserine and C1q as well as the "eat-me" receptors integrin-αv (CD51) and CD36 in cellular uptake. Consistent with this, massive epithelial cell membrane protrusions and CD36 accumulation at the contact site with apoptotic cells were observed in the infected neonatal host in vivo. Efferocytosis of infected small intestinal enterocytes by neighboring epithelial cells may represent a previously unrecognized mechanism of neonatal antimicrobial host defense to maintain barrier integrity.
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Affiliation(s)
- Kaiyi Zhang
- Institute of Medical Microbiology, RWTH Aachen University Hospital , Aachen, Germany
| | - Urska Repnik
- Department of Biology, Central Microscopy Unit, University of Kiel, Kiel, Germany
- Department of Biosciences, University of Oslo, Oslo, Norway
| | - Nour Diab
- Institute of Medical Microbiology, RWTH Aachen University Hospital , Aachen, Germany
| | - Daniel Friske
- Institute of Medical Microbiology, RWTH Aachen University Hospital , Aachen, Germany
| | - Andreas Pütz
- Institute of Medical Microbiology, RWTH Aachen University Hospital , Aachen, Germany
| | - Alina Z Bachmann
- Institute of Medical Microbiology, RWTH Aachen University Hospital , Aachen, Germany
| | | | - Michael Hensel
- Division of Microbiology, University of Osnabrück, Osnabrück, Germany
| | - Konrad U Förstner
- Institute of Molecular Infection Biology, University of Würzburg , Würzburg, Germany
| | - Alexander J Westermann
- Institute of Molecular Infection Biology, University of Würzburg , Würzburg, Germany
- Helmholtz Institute for RNA-based Infection Research, Helmholtz Centre for Infection Research , Würzburg, Germany
- Department of Microbiology, Biocentre, University of Würzburg, Würzburg, Germany
| | - Aline Dupont
- Institute of Medical Microbiology, RWTH Aachen University Hospital , Aachen, Germany
| | - Mathias W Hornef
- Institute of Medical Microbiology, RWTH Aachen University Hospital , Aachen, Germany
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3
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Rocha EF, Vinhaes CL, Araújo-Pereira M, Mota TF, Gupte AN, Kumar NP, Arriaga MB, Sterling TR, Babu S, Gaikwad S, Karyakarte R, Mave V, Kulkarni V, Paradkar M, Viswanathan V, Kornfeld H, Gupta A, Andrade BB, Queiroz ATLD. The sound of silent RNA in tuberculosis and the lncRNA role on infection. iScience 2024; 27:108662. [PMID: 38205253 PMCID: PMC10777062 DOI: 10.1016/j.isci.2023.108662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/27/2023] [Accepted: 12/05/2023] [Indexed: 01/12/2024] Open
Abstract
Tuberculosis (TB) is one of the leading causes of death worldwide, and Diabetes Mellitus is one of the major comorbidities (TB/DM) associated with the disease. A total of 103 differentially expressed ncRNAs have been identified in the TB and TB/DM comparisons. A machine learning algorithm was employed to identify the most informative lncRNAs: ADM-DT, LINC02009, LINC02471, SOX2-OT, and GK-AS1. These lncRNAs presented substantial accuracy in classifying TB from HC (AUCs >0.85) and TB/DM from HC (AUCs >0.90) in the other three countries. Genes with significant correlations with the five lncRNAs enriched common pathways in Brazil and India for both TB and TB/DM. This suggests that lncRNAs play an important role in the regulation of genes related to the TB immune response.
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Affiliation(s)
- Eduardo Fukutani Rocha
- Centro de Integração de Dados e Conhecimentos para Saúde, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
| | - Caian Leal Vinhaes
- Laboratório de Inflamação e Biomarcadores, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
- Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador 40290-150, Brazil
| | - Mariana Araújo-Pereira
- Laboratório de Inflamação e Biomarcadores, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
- Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador 40290-150, Brazil
- Faculdade de Tecnologia e Ciências, Instituto de Pesquisa Clínica e Translacional, Salvador, Brazil
| | - Tiago Feitosa Mota
- Centro de Integração de Dados e Conhecimentos para Saúde, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
| | | | | | - Maria Belen Arriaga
- Laboratório de Inflamação e Biomarcadores, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
| | - Timothy R. Sterling
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN USA
| | - Subash Babu
- National Institutes of Health- NIRT - International Center for Excellence in Research, Chennai, India
| | - Sanjay Gaikwad
- Department of Pulmonary Medicine, Byramjee-Jeejeebhoy Government Medical College and Sassoon General Hospitals, Pune, India
| | - Rajesh Karyakarte
- Department of Microbiology, Byramjee-Jeejeebhoy Government Medical College and Sassoon General Hospitals, Pune, India
| | - Vidya Mave
- Byramjee-Jeejeebhoy Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
| | - Vandana Kulkarni
- Byramjee-Jeejeebhoy Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
| | - Mandar Paradkar
- Byramjee-Jeejeebhoy Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
| | | | - Hardy Kornfeld
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA USA
- UMass Chan Medical School, Worcester, MA USA
| | - Amita Gupta
- Byramjee-Jeejeebhoy Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
| | - Bruno Bezerril Andrade
- Laboratório de Inflamação e Biomarcadores, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
- Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador 40290-150, Brazil
- Faculdade de Tecnologia e Ciências, Instituto de Pesquisa Clínica e Translacional, Salvador, Brazil
| | - Artur Trancoso Lopo de Queiroz
- Centro de Integração de Dados e Conhecimentos para Saúde, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Laboratório de Inflamação e Biomarcadores, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
| | - RePORT Brazil
- Centro de Integração de Dados e Conhecimentos para Saúde, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Laboratório de Inflamação e Biomarcadores, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
- Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador 40290-150, Brazil
- Boston University School of Public Health, Boston, MA USA
- National Institutes of Health- NIRT - International Center for Excellence in Research, Chennai, India
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN USA
- Department of Pulmonary Medicine, Byramjee-Jeejeebhoy Government Medical College and Sassoon General Hospitals, Pune, India
- Department of Microbiology, Byramjee-Jeejeebhoy Government Medical College and Sassoon General Hospitals, Pune, India
- Byramjee-Jeejeebhoy Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
- Prof. M. Viswanathan Diabetes Research Centre, Chennai, India
- Faculdade de Tecnologia e Ciências, Instituto de Pesquisa Clínica e Translacional, Salvador, Brazil
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA USA
- UMass Chan Medical School, Worcester, MA USA
- ICMR-National Institute for Research in Tuberculosis, Chennai, India
| | - RePORT India Consortia
- Centro de Integração de Dados e Conhecimentos para Saúde, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Laboratório de Inflamação e Biomarcadores, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
- Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador 40290-150, Brazil
- Boston University School of Public Health, Boston, MA USA
- National Institutes of Health- NIRT - International Center for Excellence in Research, Chennai, India
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN USA
- Department of Pulmonary Medicine, Byramjee-Jeejeebhoy Government Medical College and Sassoon General Hospitals, Pune, India
- Department of Microbiology, Byramjee-Jeejeebhoy Government Medical College and Sassoon General Hospitals, Pune, India
- Byramjee-Jeejeebhoy Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
- Prof. M. Viswanathan Diabetes Research Centre, Chennai, India
- Faculdade de Tecnologia e Ciências, Instituto de Pesquisa Clínica e Translacional, Salvador, Brazil
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA USA
- UMass Chan Medical School, Worcester, MA USA
- ICMR-National Institute for Research in Tuberculosis, Chennai, India
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4
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Barnacle JR, Davis AG, Wilkinson RJ. Recent advances in understanding the human host immune response in tuberculous meningitis. Front Immunol 2024; 14:1326651. [PMID: 38264653 PMCID: PMC10803428 DOI: 10.3389/fimmu.2023.1326651] [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: 10/23/2023] [Accepted: 12/18/2023] [Indexed: 01/25/2024] Open
Abstract
Tuberculous meningitis (TBM), the most severe form of tuberculosis, causes death in approximately 25% cases despite antibiotic therapy, and half of survivors are left with neurological disability. Mortality and morbidity are contributed to by a dysregulated immune response, and adjunctive host-directed therapies are required to modulate this response and improve outcomes. Developing such therapies relies on improved understanding of the host immune response to TBM. The historical challenges in TBM research of limited in vivo and in vitro models have been partially overcome by recent developments in proteomics, transcriptomics, and metabolomics, and the use of these technologies in nested substudies of large clinical trials. We review the current understanding of the human immune response in TBM. We begin with M. tuberculosis entry into the central nervous system (CNS), microglial infection and blood-brain and other CNS barrier dysfunction. We then outline the innate response, including the early cytokine response, role of canonical and non-canonical inflammasomes, eicosanoids and specialised pro-resolving mediators. Next, we review the adaptive response including T cells, microRNAs and B cells, followed by the role of the glutamate-GABA neurotransmitter cycle and the tryptophan pathway. We discuss host genetic immune factors, differences between adults and children, paradoxical reaction, and the impact of HIV-1 co-infection including immune reconstitution inflammatory syndrome. Promising immunomodulatory therapies, research gaps, ongoing challenges and future paths are discussed.
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Affiliation(s)
- James R. Barnacle
- The Francis Crick Institute, London, United Kingdom
- Department of Infectious Disease, Imperial College, London, United Kingdom
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory, South Africa
| | - Angharad G. Davis
- The Francis Crick Institute, London, United Kingdom
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory, South Africa
| | - Robert J. Wilkinson
- The Francis Crick Institute, London, United Kingdom
- Department of Infectious Disease, Imperial College, London, United Kingdom
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory, South Africa
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5
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Zhao L, Fan K, Sun X, Li W, Qin F, Shi L, Gao F, Zheng C. Host-directed therapy against mycobacterium tuberculosis infections with diabetes mellitus. Front Immunol 2024; 14:1305325. [PMID: 38259491 PMCID: PMC10800548 DOI: 10.3389/fimmu.2023.1305325] [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: 10/01/2023] [Accepted: 12/11/2023] [Indexed: 01/24/2024] Open
Abstract
Tuberculosis (TB) is caused by the bacterial pathogen Mycobacterium tuberculosis (MTB) and is one of the principal reasons for mortality and morbidity worldwide. Currently, recommended anti-tuberculosis drugs include isoniazid, rifampicin, ethambutol, and pyrazinamide. TB treatment is lengthy and inflicted with severe side-effects, including reduced patient compliance with treatment and promotion of drug-resistant strains. TB is also prone to other concomitant diseases such as diabetes and HIV. These drug-resistant and complex co-morbid characteristics increase the complexity of treating MTB. Host-directed therapy (HDT), which effectively eliminates MTB and minimizes inflammatory tissue damage, primarily by targeting the immune system, is currently an attractive complementary approach. The drugs used for HDT are repositioned drugs in actual clinical practice with relative safety and efficacy assurance. HDT is a potentially effective therapeutic intervention for the treatment of MTB and diabetic MTB, and can compensate for the shortcomings of current TB therapies, including the reduction of drug resistance and modulation of immune response. Here, we summarize the state-of-the-art roles and mechanisms of HDT in immune modulation and treatment of MTB, with a special focus on the role of HDT in diabetic MTB, to emphasize the potential of HDT in controlling MTB infection.
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Affiliation(s)
- Li Zhao
- Department of Tuberculosis III, Wuhan Pulmonary Hospital, Wuhan, Hubei, China
| | - Ke Fan
- Department of Tuberculosis III, Wuhan Pulmonary Hospital, Wuhan, Hubei, China
| | - Xuezhi Sun
- Department of Tuberculosis III, Wuhan Pulmonary Hospital, Wuhan, Hubei, China
| | - Wei Li
- Department of Tuberculosis III, Wuhan Pulmonary Hospital, Wuhan, Hubei, China
| | - Fenfen Qin
- Department of Tuberculosis III, Wuhan Pulmonary Hospital, Wuhan, Hubei, China
| | - Liwen Shi
- Department of Tuberculosis III, Wuhan Pulmonary Hospital, Wuhan, Hubei, China
| | - Feng Gao
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Chunlan Zheng
- Department of Tuberculosis III, Wuhan Pulmonary Hospital, Wuhan, Hubei, China
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6
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Sankar P, Mishra BB. Early innate cell interactions with Mycobacterium tuberculosis in protection and pathology of tuberculosis. Front Immunol 2023; 14:1260859. [PMID: 37965344 PMCID: PMC10641450 DOI: 10.3389/fimmu.2023.1260859] [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: 07/18/2023] [Accepted: 09/26/2023] [Indexed: 11/16/2023] Open
Abstract
Tuberculosis (TB) remains a significant global health challenge, claiming the lives of up to 1.5 million individuals annually. TB is caused by the human pathogen Mycobacterium tuberculosis (Mtb), which primarily infects innate immune cells in the lungs. These immune cells play a critical role in the host defense against Mtb infection, influencing the inflammatory environment in the lungs, and facilitating the development of adaptive immunity. However, Mtb exploits and manipulates innate immune cells, using them as favorable niche for replication. Unfortunately, our understanding of the early interactions between Mtb and innate effector cells remains limited. This review underscores the interactions between Mtb and various innate immune cells, such as macrophages, dendritic cells, granulocytes, NK cells, innate lymphocytes-iNKT and ILCs. In addition, the contribution of alveolar epithelial cell and endothelial cells that constitutes the mucosal barrier in TB immunity will be discussed. Gaining insights into the early cellular basis of immune reactions to Mtb infection is crucial for our understanding of Mtb resistance and disease tolerance mechanisms. We argue that a better understanding of the early host-pathogen interactions could inform on future vaccination approaches and devise intervention strategies.
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Affiliation(s)
| | - Bibhuti Bhusan Mishra
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY, United States
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7
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Harvest CK, Abele TJ, Yu C, Beatty CJ, Amason ME, Billman ZP, DePrizio MA, Souza FW, Lacey CA, Maltez VI, Larson HN, McGlaughon BD, Saban DR, Montgomery SA, Miao EA. An innate granuloma eradicates an environmental pathogen using Gsdmd and Nos2. Nat Commun 2023; 14:6686. [PMID: 37865673 PMCID: PMC10590453 DOI: 10.1038/s41467-023-42218-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 09/21/2023] [Indexed: 10/23/2023] Open
Abstract
Granulomas often form around pathogens that cause chronic infections. Here, we discover an innate granuloma model in mice with an environmental bacterium called Chromobacterium violaceum. Granuloma formation not only successfully walls off, but also clears, the infection. The infected lesion can arise from a single bacterium that replicates despite the presence of a neutrophil swarm. Bacterial replication ceases when macrophages organize around the infection and form a granuloma. This granuloma response is accomplished independently of adaptive immunity that is typically required to organize granulomas. The C. violaceum-induced granuloma requires at least two separate defense pathways, gasdermin D and iNOS, to maintain the integrity of the granuloma architecture. This innate granuloma successfully eradicates C. violaceum infection. Therefore, this C. violaceum-induced granuloma model demonstrates that innate immune cells successfully organize a granuloma and thereby resolve infection by an environmental pathogen.
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Affiliation(s)
- Carissa K Harvest
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Taylor J Abele
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Chen Yu
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Cole J Beatty
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Megan E Amason
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Zachary P Billman
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Morgan A DePrizio
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Fernando W Souza
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
| | - Carolyn A Lacey
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Vivien I Maltez
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Heather N Larson
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Benjamin D McGlaughon
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Daniel R Saban
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Stephanie A Montgomery
- Department of Pathology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Edward A Miao
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA.
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA.
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA.
- Department of Pathology, Duke University School of Medicine, Durham, NC, USA.
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8
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Mayer-Barber KD. Granulocytes subsets and their divergent functions in host resistance to Mycobacterium tuberculosis - a 'tipping-point' model of disease exacerbation. Curr Opin Immunol 2023; 84:102365. [PMID: 37437471 PMCID: PMC10543468 DOI: 10.1016/j.coi.2023.102365] [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: 04/01/2023] [Revised: 05/29/2023] [Accepted: 06/14/2023] [Indexed: 07/14/2023]
Abstract
Granulocytes are innate immune effector cells with essential functions in host resistance to bacterial infections. I will discuss emerging evidence that during Mycobacterium tuberculosis infection, counter-intuitively, eosinophils are host-protective while neutrophils are host detrimental. Additionally, I will propose a 'tipping-point' model in which neutrophils are an integral part of a feedforward loop driving tuberculosis disease exacerbation.
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Affiliation(s)
- Katrin D Mayer-Barber
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, 20892, USA.
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9
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Escobar-Chavarría O, Benitez-Guzman A, Jiménez-Vázquez I, Carrisoza-Urbina J, Arriaga-Pizano L, Huerta-Yépez S, Baay-Guzmán G, Gutiérrez-Pabello JA. Necrotic Cell Death and Inflammasome NLRP3 Activity in Mycobacterium bovis-Infected Bovine Macrophages. Cells 2023; 12:2079. [PMID: 37626889 PMCID: PMC10453650 DOI: 10.3390/cells12162079] [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: 06/28/2023] [Revised: 08/05/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Mycobacterium bovis is a facultative intracellular bacterium that produces cellular necrosis in granulomatous lesions in bovines. Although M. bovis-induced inflammation actively participates in granuloma development, its role in necrotic cell death and in bovine macrophages has not been fully explored. In this study, we evaluate the effect of M. bovis AN5 and its culture filtrate protein extract (CFPE) on inflammasome activation in bovine macrophages and its consequences on cell death. Our results show that both stimuli induce necrotic cell death starting 4 h after incubation. CFPE treatment and M. bovis infection also induce the maturation of IL-1β (>3000 pg/mL), oligomerization of ASC (apoptosis-associated speck-like protein containing CARD), and activation of caspase-1, following the canonical activation pathway of the NLRP3 inflammasome. Inhibiting the oligomerization of NLRP3 and caspase-1 decreases necrosis among the infected or CFPE-stimulated macrophages. Furthermore, histological lymph node sections of bovines naturally infected with M. bovis contained cleaved gasdermin D, mainly in macrophages and giant cells within the granulomas. Finally, the induction of cell death (apoptosis and pyroptosis) decreased the intracellular bacteria count in the infected bovine macrophages, suggesting that cell death helps to control the intracellular growth of the mycobacteria. Our results indicate that M. bovis induces pyroptosis-like cell death that is partially related to the NLRP3 inflammasome activation and that the cell death process could control bacterial growth.
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Affiliation(s)
- Omar Escobar-Chavarría
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Alejandro Benitez-Guzman
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Itzel Jiménez-Vázquez
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Jacobo Carrisoza-Urbina
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Lourdes Arriaga-Pizano
- Unidad de Investigación Médica en Inmunoquímica, Hospital de Especialidades del Centro Médico Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico;
| | - Sara Huerta-Yépez
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México, Federico Gómez, Mexico City 06720, Mexico; (S.H.-Y.); (G.B.-G.)
| | - Guillermina Baay-Guzmán
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México, Federico Gómez, Mexico City 06720, Mexico; (S.H.-Y.); (G.B.-G.)
| | - José A. Gutiérrez-Pabello
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
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10
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Kroon EE, Correa-Macedo W, Evans R, Seeger A, Engelbrecht L, Kriel JA, Loos B, Okugbeni N, Orlova M, Cassart P, Kinnear CJ, Tromp GC, Möller M, Wilkinson RJ, Coussens AK, Schurr E, Hoal EG. Neutrophil extracellular trap formation and gene programs distinguish TST/IGRA sensitization outcomes among Mycobacterium tuberculosis exposed persons living with HIV. PLoS Genet 2023; 19:e1010888. [PMID: 37616312 PMCID: PMC10470897 DOI: 10.1371/journal.pgen.1010888] [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: 04/24/2023] [Revised: 08/31/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023] Open
Abstract
Persons living with HIV (PLWH) have an increased risk for tuberculosis (TB). After prolonged and repeated exposure, some PLWH never develop TB and show no evidence of immune sensitization to Mycobacterium tuberculosis (Mtb) as defined by persistently negative tuberculin skin tests (TST) and interferon gamma release assays (IGRA). This group has been identified and defined as HIV+ persistently TB, tuberculin and IGRA negative (HITTIN). To investigate potential innate mechanisms unique to individuals with the HITTIN phenotype we compared their neutrophil Mtb infection response to that of PLWH, with no TB history, but who test persistently IGRA positive, and tuberculin positive (HIT). Neutrophil samples from 17 HITTIN (PMNHITTIN) and 11 HIT (PMNHIT) were isolated and infected with Mtb H37Rv for 1h and 6h. RNA was extracted and used for RNAseq analysis. Since there was no significant differential transcriptional response at 1h between infected PMNHITTIN and PMNHIT, we focused on the 6h timepoint. When compared to uninfected PMN, PMNHITTIN displayed 3106 significantly upregulated and 3548 significantly downregulated differentially expressed genes (DEGs) (absolute cutoff of a log2FC of 0.2, FDR < 0.05) whereas PMNHIT demonstrated 3816 significantly upregulated and 3794 significantly downregulated DEGs following 6h Mtb infection. Contrasting the log2FC 6h infection response to Mtb from PMNHITTIN against PMNHIT, 2285 genes showed significant differential response between the two groups. Overall PMNHITTIN had a lower fold change response to Mtb infection compared to PMNHIT. According to pathway enrichment, Apoptosis and NETosis were differentially regulated between HITTIN and HIT PMN responses after 6h Mtb infection. To corroborate the blunted NETosis transcriptional response measured among HITTIN, fluorescence microscopy revealed relatively lower neutrophil extracellular trap formation and cell loss in PMNHITTIN compared to PMNHIT, showing that PMNHITTIN have a distinct response to Mtb.
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Affiliation(s)
- Elouise E. Kroon
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Wilian Correa-Macedo
- Program in Infectious Diseases and Immunity in Global Health, The Research Institute of the McGill University Health Centre, Montréal, Canada
- McGill International TB Centre, McGill University, Montréal, Canada
- Department of Biochemistry, McGill University, Montréal, Canada
| | - Rachel Evans
- Infectious Diseases and Immune Defence Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department Medical Biology (WEHI), Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Australia
| | - Allison Seeger
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine and Department of Medicine, University of Cape Town, Observatory, South Africa
| | - Lize Engelbrecht
- Central Analytical Facilities, Microscopy Unit, Stellenbosch University, Cape Town, South Africa
| | - Jurgen A. Kriel
- Central Analytical Facilities, Microscopy Unit, Stellenbosch University, Cape Town, South Africa
| | - Ben Loos
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Naomi Okugbeni
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Genomics Platform, Tygerberg, South Africa
| | - Marianna Orlova
- Program in Infectious Diseases and Immunity in Global Health, The Research Institute of the McGill University Health Centre, Montréal, Canada
- McGill International TB Centre, McGill University, Montréal, Canada
- Department of Biochemistry, McGill University, Montréal, Canada
| | - Pauline Cassart
- Program in Infectious Diseases and Immunity in Global Health, The Research Institute of the McGill University Health Centre, Montréal, Canada
- McGill International TB Centre, McGill University, Montréal, Canada
| | - Craig J. Kinnear
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Genomics Platform, Tygerberg, South Africa
| | - Gerard C. Tromp
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- Centre for Bioinformatics and Computational Biology, University of Stellenbosch, Cape Town, South Africa
- SAMRC-SHIP South African Tuberculosis Bioinformatics Initiative (SATBBI), Center for Bioinformatics and Computational Biology, Cape Town, South Africa
| | - Marlo Möller
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- Centre for Bioinformatics and Computational Biology, University of Stellenbosch, Cape Town, South Africa
| | - Robert J. Wilkinson
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine and Department of Medicine, University of Cape Town, Observatory, South Africa
- Department of Infectious Diseases, Imperial College London, London, United Kingdom
- The Francis Crick Institute, London, United Kingdom
| | - Anna K. Coussens
- Infectious Diseases and Immune Defence Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department Medical Biology (WEHI), Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Australia
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine and Department of Medicine, University of Cape Town, Observatory, South Africa
| | - Erwin Schurr
- Program in Infectious Diseases and Immunity in Global Health, The Research Institute of the McGill University Health Centre, Montréal, Canada
- McGill International TB Centre, McGill University, Montréal, Canada
- Department of Biochemistry, McGill University, Montréal, Canada
| | - Eileen G. Hoal
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
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11
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Mandal M, Pires D, Catalão MJ, Azevedo-Pereira JM, Anes E. Modulation of Cystatin F in Human Macrophages Impacts Cathepsin-Driven Killing of Multidrug-Resistant Mycobacterium tuberculosis. Microorganisms 2023; 11:1861. [PMID: 37513033 PMCID: PMC10385253 DOI: 10.3390/microorganisms11071861] [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: 05/30/2023] [Revised: 07/07/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023] Open
Abstract
Tuberculosis (TB) treatment relies primarily on 70-year-old drugs, and prophylaxis suffers from the lack of an effective vaccine. Among the 10 million people exhibiting disease symptoms yearly, 450,000 have multidrug or extensively drug-resistant (MDR or XDR) TB. A greater understanding of host and pathogen interactions will lead to new therapeutic interventions for TB eradication. One of the strategies will be to target the host for better immune bactericidal responses against the TB causative agent Mycobacterium tuberculosis (Mtb). Cathepsins are promising targets due to their manipulation of Mtb with consequences such as decreased proteolytic activity and improved pathogen survival in macrophages. We recently demonstrated that we could overcome this enzymatic blockade by manipulating protease inhibitors such as cystatins. Here, we investigate the role of cystatin F, an inhibitor that we showed previously to be strongly upregulated during Mtb infection. Our results indicate that the silencing of cystatin F using siRNA increase the proteolytic activity of cathepsins S, L, and B, significantly impacting pathogen intracellular killing in macrophages. Taken together, these indicate the targeting of cystatin F as a potential adjuvant therapy for TB, including MDR and XDR-TB.
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Affiliation(s)
- Manoj Mandal
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - David Pires
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Center for Interdisciplinary Research in Health, Católica Medical School, Universidade Católica Portuguesa, Estrada Octávio Pato, 2635-631 Rio de Mouro, Portugal
| | - Maria João Catalão
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - José Miguel Azevedo-Pereira
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Elsa Anes
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
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12
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Cavalcante-Silva LHA, Almeida FS, Andrade AGD, Comberlang FC, Cardoso LL, Vanderley SER, Keesen TSL. Mycobacterium tuberculosis in a Trap: The Role of Neutrophil Extracellular Traps in Tuberculosis. Int J Mol Sci 2023; 24:11385. [PMID: 37511144 PMCID: PMC10379580 DOI: 10.3390/ijms241411385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/07/2023] [Accepted: 07/09/2023] [Indexed: 07/30/2023] Open
Abstract
Mycobacterium tuberculosis complex causes tuberculosis (TB), a disease that causes pulmonary inflammation but can also affect other tissues. Despite macrophages having a defined role in TB immunopathogenesis, other innate immune cells, such as neutrophils, are involved in this process. These cells have high phagocytic ability and a microbial-killing machine comprised of enzymes, antimicrobial peptides, and reactive oxygen species. In the last two decades, a new neutrophil immune response, the neutrophil extracellular traps (NETs), has been intensely researched. NETs comprise DNA associated with histones, enzymes, and antimicrobial peptides. These structures are related to antimicrobial immune response and some immuno-pathogenesis mechanisms. This mini review highlights the role of NETs in tuberculosis and how they can be helpful as a diagnostic tool and/or therapeutic target.
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Affiliation(s)
- Luiz Henrique Agra Cavalcante-Silva
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Fernanda Silva Almeida
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Arthur Gomes de Andrade
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Fernando Cézar Comberlang
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Leonardo Lima Cardoso
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Shayenne Eduarda Ramos Vanderley
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Tatjana S L Keesen
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
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13
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García-Bengoa M, Meurer M, Goethe R, Singh M, Reljic R, von Köckritz-Blickwede M. Role of phagocyte extracellular traps during Mycobacterium tuberculosis infections and tuberculosis disease processes. Front Microbiol 2023; 14:983299. [PMID: 37492257 PMCID: PMC10365110 DOI: 10.3389/fmicb.2023.983299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 06/19/2023] [Indexed: 07/27/2023] Open
Abstract
Mycobacterium tuberculosis (M.tb) infections remain one of the most significant causes of mortality worldwide. The current situation shows an emergence of new antibiotic-resistant strains making it difficult to control the tuberculosis (TB) disease. A large part of its success as a pathogen is due to its ability to persist for years or even decades without causing evident clinical manifestations. M.tb is highly successful in evading the host-defense by manipulating host-signalling pathways. Although macrophages are generally viewed as the key cell type involved in harboring M.tb, growing evidence shows that neutrophils also play a fundamental role. Both cells are known to act in multiple ways when encountering an invading pathogen, including phagocytosis, release of cytokines and chemokines, and oxidative burst. In addition, the formation of neutrophil extracellular traps (NETs) and macrophage extracellular traps (METs) has been described to contribute to M.tb infections. NETs/METs are extracellular DNA fibers with associated granule components, which are released upon activation of the cells by the pathogen or by pro-inflammatory mediators. On one hand, they can lead to a protective immune response by entrapment and killing of pathogens. However, on the other hand, they can also play a severe pathological role by inducing tissue damage. Extracellular traps (ETs) produced in the pulmonary alveoli can expand easily and expose tissue-damaging factors with detrimental effects. Since host-directed therapies offer a complementary strategy in TB, the knowledge of NET/MET formation is important for understanding potential protective versus detrimental pathways during innate immune signaling. In this review, we summarize the progress made in understanding the role of NETs/METs in the pathogenesis of TB.
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Affiliation(s)
- María García-Bengoa
- Institute for Biochemistry, University of Veterinary Medicine Hannover, Hannover, Germany
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
- LIONEX Diagnostics and Therapeutics GmbH, Braunschweig, Germany
| | - Marita Meurer
- Institute for Biochemistry, University of Veterinary Medicine Hannover, Hannover, Germany
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ralph Goethe
- Institute for Microbiology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Mahavir Singh
- LIONEX Diagnostics and Therapeutics GmbH, Braunschweig, Germany
| | - Rajko Reljic
- Institute for Infection and Immunity, St George’s University of London, London, United Kingdom
| | - Maren von Köckritz-Blickwede
- Institute for Biochemistry, University of Veterinary Medicine Hannover, Hannover, Germany
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
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14
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Kayongo A, Nyiro B, Siddharthan T, Kirenga B, Checkley W, Lutaakome Joloba M, Ellner J, Salgame P. Mechanisms of lung damage in tuberculosis: implications for chronic obstructive pulmonary disease. Front Cell Infect Microbiol 2023; 13:1146571. [PMID: 37415827 PMCID: PMC10320222 DOI: 10.3389/fcimb.2023.1146571] [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: 01/17/2023] [Accepted: 06/05/2023] [Indexed: 07/08/2023] Open
Abstract
Pulmonary tuberculosis is increasingly recognized as a risk factor for COPD. Severe lung function impairment has been reported in post-TB patients. Despite increasing evidence to support the association between TB and COPD, only a few studies describe the immunological basis of COPD among TB patients following successful treatment completion. In this review, we draw on well-elaborated Mycobacterium tuberculosis-induced immune mechanisms in the lungs to highlight shared mechanisms for COPD pathogenesis in the setting of tuberculosis disease. We further examine how such mechanisms could be exploited to guide COPD therapeutics.
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Affiliation(s)
- Alex Kayongo
- Department of Medicine, Center for Emerging Pathogens, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
- Makerere University College of Health Sciences, Lung Institute, Makerere University, Kampala, Uganda
| | - Brian Nyiro
- Department of Medicine, Center for Emerging Pathogens, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Trishul Siddharthan
- Division of Pulmonary and Critical Care Medicine, University of Miami, Miami, FL, United States
| | - Bruce Kirenga
- Makerere University College of Health Sciences, Lung Institute, Makerere University, Kampala, Uganda
| | - William Checkley
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, United States
- Center for Global Non-Communicable Disease Research and Training, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Moses Lutaakome Joloba
- Makerere University College of Health Sciences, Lung Institute, Makerere University, Kampala, Uganda
| | - Jerrold Ellner
- Department of Medicine, Center for Emerging Pathogens, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States
| | - Padmini Salgame
- Department of Medicine, Center for Emerging Pathogens, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States
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15
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Ramon-Luing LA, Palacios Y, Ruiz A, Téllez-Navarrete NA, Chavez-Galan L. Virulence Factors of Mycobacterium tuberculosis as Modulators of Cell Death Mechanisms. Pathogens 2023; 12:839. [PMID: 37375529 DOI: 10.3390/pathogens12060839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/29/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Mycobacterium tuberculosis (Mtb) modulates diverse cell death pathways to escape the host immune responses and favor its dissemination, a complex process of interest in pathogenesis-related studies. The main virulence factors of Mtb that alter cell death pathways are classified according to their origin as either non-protein (for instance, lipomannan) or protein (such as the PE family and ESX secretion system). The 38 kDa lipoprotein, ESAT-6 (early antigen-secreted protein 6 kDa), and another secreted protein, tuberculosis necrotizing toxin (TNT), induces necroptosis, thereby allowing mycobacteria to survive inside the cell. The inhibition of pyroptosis by blocking inflammasome activation by Zmp1 and PknF is another pathway that aids the intracellular replication of Mtb. Autophagy inhibition is another mechanism that allows Mtb to escape the immune response. The enhanced intracellular survival (Eis) protein, other proteins, such as ESX-1, SecA2, SapM, PE6, and certain microRNAs, also facilitate Mtb host immune escape process. In summary, Mtb affects the microenvironment of cell death to avoid an effective immune response and facilitate its spread. A thorough study of these pathways would help identify therapeutic targets to prevent the survival of mycobacteria in the host.
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Affiliation(s)
- Lucero A Ramon-Luing
- Laboratory of Integrative Immunology, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Mexico City 14080, Mexico
| | - Yadira Palacios
- Escuela Militar de Graduados de Sanidad, Secretaría de la Defensa Nacional, Mexico City 11200, Mexico
- Department of Biological Systems, Universidad Autónoma Metropolitana, Campus Xochimilco, Mexico City 04960, Mexico
| | - Andy Ruiz
- Laboratory of Integrative Immunology, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Mexico City 14080, Mexico
| | - Norma A Téllez-Navarrete
- Department of Healthcare Coordination, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Mexico City 14080, Mexico
| | - Leslie Chavez-Galan
- Laboratory of Integrative Immunology, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Mexico City 14080, Mexico
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16
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Anes E, Pires D, Mandal M, Azevedo-Pereira JM. ESAT-6 a Major Virulence Factor of Mycobacterium tuberculosis. Biomolecules 2023; 13:968. [PMID: 37371548 DOI: 10.3390/biom13060968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/31/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Mycobacterium tuberculosis (Mtb), the causative agent of human tuberculosis (TB), is one of the most successfully adapted human pathogens. Human-to-human transmission occurs at high rates through aerosols containing bacteria, but the pathogen evolved prior to the establishment of crowded populations. Mtb has developed a particular strategy to ensure persistence in the host until an opportunity for transmission arises. It has refined its lifestyle to obviate the need for virulence factors such as capsules, flagella, pili, or toxins to circumvent mucosal barriers. Instead, the pathogen uses host macrophages, where it establishes intracellular niches for its migration into the lung parenchyma and other tissues and for the induction of long-lived latency in granulomas. Finally, at the end of the infection cycle, Mtb induces necrotic cell death in macrophages to escape to the extracellular milieu and instructs a strong inflammatory response that is required for the progression from latency to disease and transmission. Common to all these events is ESAT-6, one of the major virulence factors secreted by the pathogen. This narrative review highlights the recent advances in understanding the role of ESAT-6 in hijacking macrophage function to establish successful infection and transmission and its use as a target for the development of diagnostic tools and vaccines.
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Affiliation(s)
- Elsa Anes
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - David Pires
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Center for Interdisciplinary Research in Health, Católica Medical School, Universidade Católica Portuguesa, Estrada Octávio Pato, 2635-631 Rio de Mouro, Portugal
| | - Manoj Mandal
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - José Miguel Azevedo-Pereira
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
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17
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Carabalí-Isajar ML, Rodríguez-Bejarano OH, Amado T, Patarroyo MA, Izquierdo MA, Lutz JR, Ocampo M. Clinical manifestations and immune response to tuberculosis. World J Microbiol Biotechnol 2023; 39:206. [PMID: 37221438 DOI: 10.1007/s11274-023-03636-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 04/29/2023] [Indexed: 05/25/2023]
Abstract
Tuberculosis is a far-reaching, high-impact disease. It is among the top ten causes of death worldwide caused by a single infectious agent; 1.6 million tuberculosis-related deaths were reported in 2021 and it has been estimated that a third of the world's population are carriers of the tuberculosis bacillus but do not develop active disease. Several authors have attributed this to hosts' differential immune response in which cellular and humoral components are involved, along with cytokines and chemokines. Ascertaining the relationship between TB development's clinical manifestations and an immune response should increase understanding of tuberculosis pathophysiological and immunological mechanisms and correlating such material with protection against Mycobacterium tuberculosis. Tuberculosis continues to be a major public health problem globally. Mortality rates have not decreased significantly; rather, they are increasing. This review has thus been aimed at deepening knowledge regarding tuberculosis by examining published material related to an immune response against Mycobacterium tuberculosis, mycobacterial evasion mechanisms regarding such response and the relationship between pulmonary and extrapulmonary clinical manifestations induced by this bacterium which are related to inflammation associated with tuberculosis dissemination through different routes.
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Grants
- a Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia
- a Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia
- a Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia
- a Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia
- b PhD Program in Biomedical and Biological Sciences, Universidad del Rosario, Carrera 24#63C-69, Bogotá 111221, Colombia
- c Health Sciences Faculty, Universidad de Ciencias Aplicadas y Ambientales (UDCA), Calle 222#55-37, Bogotá 111166, Colombia
- d Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia
- e Medicine Department, Hospital Universitario Mayor Mederi, Calle 24 # 29-45, Bogotá 111411. Colombia
- e Medicine Department, Hospital Universitario Mayor Mederi, Calle 24 # 29-45, Bogotá 111411. Colombia
- f Universidad Distrital Francisco José de Caldas, Carrera 3#26A-40, Bogotá 110311, Colombia
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Affiliation(s)
- Mary Lilián Carabalí-Isajar
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, 111321, Bogotá, Colombia
- Biomedical and Biological Sciences Programme, Universidad del Rosario, Carrera 24#63C-69, 111221, Bogotá, Colombia
| | | | - Tatiana Amado
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, 111321, Bogotá, Colombia
| | - Manuel Alfonso Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, 111321, Bogotá, Colombia
- Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45#26-85, 111321, Bogotá, Colombia
| | - María Alejandra Izquierdo
- Medicine Department, Hospital Universitario Mayor Mederi, Calle 24 # 29-45, 111411, Bogotá, Colombia
| | - Juan Ricardo Lutz
- Medicine Department, Hospital Universitario Mayor Mederi, Calle 24 # 29-45, 111411, Bogotá, Colombia.
| | - Marisol Ocampo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, 111321, Bogotá, Colombia.
- Universidad Distrital Francisco José de Caldas, Carrera 3#26A-40, 110311, Bogotá, Colombia.
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18
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Mott D, Yang J, Baer C, Papavinasasundaram K, Sassetti CM, Behar SM. High Bacillary Burden and the ESX-1 Type VII Secretion System Promote MHC Class I Presentation by Mycobacterium tuberculosis-Infected Macrophages to CD8 T Cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 210:1531-1542. [PMID: 37000471 PMCID: PMC10159937 DOI: 10.4049/jimmunol.2300001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 02/21/2023] [Indexed: 04/01/2023]
Abstract
We used a mouse model to study how Mycobacterium tuberculosis subverts host defenses to persist in macrophages despite immune pressure. CD4 T cells can recognize macrophages infected with a single bacillus in vitro. Under identical conditions, CD8 T cells inefficiently recognize infected macrophages and fail to restrict M. tuberculosis growth, although they can inhibit M. tuberculosis growth during high-burden intracellular infection. We show that high intracellular M. tuberculosis numbers cause macrophage death, leading other macrophages to scavenge cellular debris and cross-present the TB10.4 Ag to CD8 T cells. Presentation by infected macrophages requires M. tuberculosis to have a functional ESX-1 type VII secretion system. These data indicate that phagosomal membrane damage and cell death promote MHC class I presentation of the immunodominant Ag TB10.4 by macrophages. Although this mode of Ag presentation stimulates cytokine production that we presume would be host beneficial, killing of uninfected cells could worsen immunopathology. We suggest that shifting the focus of CD8 T cell recognition to uninfected macrophages would limit the interaction of CD8 T cells with infected macrophages and impair CD8 T cell-mediated resolution of tuberculosis.
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Affiliation(s)
- Daniel Mott
- Immunology and Microbiology Program, Graduate School of Biomedical Science, Worcester, Massachusetts, USA
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Jason Yang
- Immunology and Microbiology Program, Graduate School of Biomedical Science, Worcester, Massachusetts, USA
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Christina Baer
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Kadamba Papavinasasundaram
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Christopher M. Sassetti
- Immunology and Microbiology Program, Graduate School of Biomedical Science, Worcester, Massachusetts, USA
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Samuel M. Behar
- Immunology and Microbiology Program, Graduate School of Biomedical Science, Worcester, Massachusetts, USA
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
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19
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Golovkine GR, Roberts AW, Morrison HM, Rivera-Lugo R, McCall RM, Nilsson H, Garelis NE, Repasy T, Cronce M, Budzik J, Van Dis E, Popov LM, Mitchell G, Zalpuri R, Jorgens D, Cox JS. Autophagy restricts Mycobacterium tuberculosis during acute infection in mice. Nat Microbiol 2023; 8:819-832. [PMID: 37037941 PMCID: PMC11027733 DOI: 10.1038/s41564-023-01354-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 03/03/2023] [Indexed: 04/12/2023]
Abstract
Whether or not autophagy has a role in defence against Mycobacterium tuberculosis infection remains unresolved. Previously, conditional knockdown of the core autophagy component ATG5 in myeloid cells was reported to confer extreme susceptibility to M. tuberculosis in mice, whereas depletion of other autophagy factors had no effect on infection. We show that doubling cre gene dosage to more robustly deplete ATG16L1 or ATG7 resulted in increased M. tuberculosis growth and host susceptibility in mice, although ATG5-depleted mice are more sensitive than ATG16L1- or ATG7-depleted mice. We imaged individual macrophages infected with M. tuberculosis and identified a shift from apoptosis to rapid necrosis in autophagy-depleted cells. This effect was dependent on phagosome permeabilization by M. tuberculosis. We monitored infected cells by electron microscopy, showing that autophagy protects the host macrophage by partially reducing mycobacterial access to the cytosol. We conclude that autophagy has an important role in defence against M. tuberculosis in mammals.
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Affiliation(s)
- Guillaume R Golovkine
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
- Evotec, Toulouse, France
| | - Allison W Roberts
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
| | - Huntly M Morrison
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
| | - Rafael Rivera-Lugo
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
| | - Rita M McCall
- Department of Plant & Microbial Biology, University of California, Berkeley, CA, USA
| | - Hannah Nilsson
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
| | - Nicholas E Garelis
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
| | - Teresa Repasy
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
- Bio-Rad Laboratories, Seattle, WA, USA
| | - Michael Cronce
- Department of Bioengineering, University of California, Berkeley, CA, USA
- UC Berkeley-UCSF Graduate program in Bioengineering, Berkeley, CA, USA
| | - Jonathan Budzik
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
- Department of Medicine, University of California, San Francisco, CA, USA
- Department of Medicine, University of California, San Francisco, CA, USA
| | - Erik Van Dis
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
- Department of Immunology, University of Washington School of Medicine, Seattle, WA, USA
| | - Lauren M Popov
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
- Novome Biotechnologies, San Francisco, CA, USA
| | - Gabriel Mitchell
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
- Open Innovation @ NITD, Novartis Institute for Tropical Diseases, Emeryville, CA, USA
| | - Reena Zalpuri
- Electron Microscope Laboratory, University of California, Berkeley, CA, USA
| | - Danielle Jorgens
- Electron Microscope Laboratory, University of California, Berkeley, CA, USA
| | - Jeffery S Cox
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA.
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20
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Toniolo C, Dhar N, McKinney JD. Uptake-independent killing of macrophages by extracellular Mycobacterium tuberculosis aggregates. EMBO J 2023; 42:e113490. [PMID: 36920246 PMCID: PMC10152147 DOI: 10.15252/embj.2023113490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 01/30/2023] [Accepted: 02/23/2023] [Indexed: 03/16/2023] Open
Abstract
Mycobacterium tuberculosis (Mtb) infection is initiated by inhalation of bacteria into lung alveoli, where they are phagocytosed by resident macrophages. Intracellular Mtb replication induces the death of the infected macrophages and the release of bacterial aggregates. Here, we show that these aggregates can evade phagocytosis by killing macrophages in a contact-dependent but uptake-independent manner. We use time-lapse fluorescence microscopy to show that contact with extracellular Mtb aggregates triggers macrophage plasma membrane perturbation, cytosolic calcium accumulation, and pyroptotic cell death. These effects depend on the Mtb ESX-1 secretion system, however, this system alone cannot induce calcium accumulation and macrophage death in the absence of the Mtb surface-exposed lipid phthiocerol dimycocerosate. Unexpectedly, we found that blocking ESX-1-mediated secretion of the EsxA/EsxB virulence factors does not eliminate the uptake-independent killing of macrophages and that the 50-kDa isoform of the ESX-1-secreted protein EspB can mediate killing in the absence of EsxA/EsxB secretion. Treatment with an ESX-1 inhibitor reduces uptake-independent killing of macrophages by Mtb aggregates, suggesting that novel therapies targeting this anti-phagocytic mechanism could prevent the propagation of extracellular bacteria within the lung.
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Affiliation(s)
- Chiara Toniolo
- School of Life Sciences, Swiss Federal Institute of Technology in Lausanne (EPFL), Lausanne, Switzerland
| | - Neeraj Dhar
- School of Life Sciences, Swiss Federal Institute of Technology in Lausanne (EPFL), Lausanne, Switzerland.,Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, SK, Canada.,Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Saskatoon, SK, Canada
| | - John D McKinney
- School of Life Sciences, Swiss Federal Institute of Technology in Lausanne (EPFL), Lausanne, Switzerland
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21
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Harvest CK, Abele TJ, Yu C, Beatty CJ, Amason ME, Billman ZP, DePrizio MA, Lacey CA, Maltez VI, Larson HN, McGlaughon BD, Saban DR, Montgomery SA, Miao EA. An innate granuloma eradicates an environmental pathogen using Gsdmd and Nos2. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.07.531568. [PMID: 36945446 PMCID: PMC10028874 DOI: 10.1101/2023.03.07.531568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
Granulomas often form around pathogens that cause chronic infections. Here, we discover a novel granuloma model in mice. Chromobacterium violaceum is an environmental bacterium that stimulates granuloma formation that not only successfully walls off but also clears the infection. The infected lesion can arise from a single bacterium that replicates in the presence of a neutrophil swarm. Bacterial replication ceases when macrophages organize around the infection and form a granuloma. This granuloma response is accomplished independently of adaptive immunity that is typically required to organize granulomas. The C. violaceum -induced granuloma requires at least two separate defense pathways, gasdermin D and iNOS, to maintain the integrity of the granuloma architecture. These innate granulomas successfully eradicate C. violaceum infection. Therefore, this new C. violaceum -induced granuloma model demonstrates that innate immune cells successfully organize a granuloma and thereby eradicate infection by an environmental pathogen.
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22
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Waguia Kontchou C, Häcker G. Role of mitochondrial outer membrane permeabilization during bacterial infection. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2023; 374:83-127. [PMID: 36858657 DOI: 10.1016/bs.ircmb.2022.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Beyond the initial 'powerhouse' view, mitochondria have numerous functions in their mammalian cell and contribute to many physiological processes, and many of these we understand only partially. The control of apoptosis by mitochondria is firmly established. Many questions remain however how this function is embedded into physiology, and how other signaling pathways regulate mitochondrial apoptosis; the interplay of bacteria with the mitochondrial apoptosis pathway is one such example. The outer mitochondrial membrane regulates both import into mitochondria and the release of intermembrane, and in some situations also matrix components from mitochondria, and these mitochondrial components can have signaling function in the cytosol. One function is the induction of apoptotic cell death. An exciting, more recently discovered function is the regulation of inflammation. Mitochondrial molecules, both proteins and nucleic acids, have inflammatory activity when released from mitochondria, an activity whose regulation is intertwined with the activation of apoptotic caspases. Bacterial infection can have more general effects on mitochondrial apoptosis-regulation, through effects on host transcription and other pathways, such as signals controlled by pattern recognition. Some specialized bacteria have products that more specifically regulate signaling to the outer mitochondrial membrane, and to apoptosis; both pro- and anti-apoptotic mechanisms have been reported. Among the intriguing recent findings in this area are signaling contributions of porins and the sub-lethal release of intermembrane constituents. We will here review the literature and place the new developments into the established context of mitochondrial signaling during the contact of bacterial pathogens with human cells.
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Affiliation(s)
- Collins Waguia Kontchou
- Institute of Medical Microbiology and Hygiene, Medical Center-University of Freiburg, Faculty of Medicine, Freiburg, Germany
| | - Georg Häcker
- Institute of Medical Microbiology and Hygiene, Medical Center-University of Freiburg, Faculty of Medicine, Freiburg, Germany; BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg, Germany.
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23
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Ma Y, Kemp SS, Yang X, Wu MH, Yuan SY. Cellular mechanisms underlying the impairment of macrophage efferocytosis. Immunol Lett 2023; 254:41-53. [PMID: 36740099 PMCID: PMC9992097 DOI: 10.1016/j.imlet.2023.02.001] [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: 12/08/2022] [Revised: 01/23/2023] [Accepted: 02/02/2023] [Indexed: 02/05/2023]
Abstract
The phagocytosis and clearance of dying cells by macrophages, a process termed efferocytosis, is essential for both maintaining homeostasis and promoting tissue repair after infection or sterile injury. If not removed in a timely manner, uncleared cells can undergo secondary necrosis, and necrotic cells lose membrane integrity, release toxic intracellular components, and potentially induce inflammation or autoimmune diseases. Efferocytosis also initiates the repair process by producing a wide range of pro-reparative factors. Accumulating evidence has revealed that macrophage efferocytosis defects are involved in the development and progression of a variety of inflammatory and autoimmune diseases. The underlying mechanisms of efferocytosis impairment are complex, disease-dependent, and incompletely understood. In this review, we will first summarize the current knowledge about the normal signaling and metabolic processes of macrophage efferocytosis and its importance in maintaining tissue homeostasis and repair. We then will focus on analyzing the molecular and cellular mechanisms underlying efferocytotic abnormality (impairment) in disease or injury conditions. Next, we will discuss the potential molecular targets for enhanced efferocytosis in animal models of disease. To provide a balanced view, we will also discuss some deleterious effects of efferocytosis.
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Affiliation(s)
- Yonggang Ma
- Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL 33612, USA
| | - Scott S Kemp
- Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL 33612, USA
| | - Xiaoyuan Yang
- Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL 33612, USA
| | - Mack H Wu
- Department of Surgery, University of South Florida Morsani College of Medicine, Tampa, FL 33612, USA
| | - Sarah Y Yuan
- Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL 33612, USA; Department of Surgery, University of South Florida Morsani College of Medicine, Tampa, FL 33612, USA.
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24
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Hampton MB, Dickerhof N. Inside the phagosome: A bacterial perspective. Immunol Rev 2023; 314:197-209. [PMID: 36625601 DOI: 10.1111/imr.13182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The neutrophil phagosome is one of the most hostile environments that bacteria must face and overcome if they are to succeed as pathogens. Targeting bacterial defense mechanisms should lead to new therapies that assist neutrophils to kill pathogens, but this has not yet come to fruition. One of the limiting factors in this effort has been our incomplete knowledge of the complex biochemistry that occurs within the rapidly changing environment of the phagosome. The same compartmentalization that protects host tissue also limits our ability to measure events within the phagosome. In this review, we highlight the limitations in our knowledge, and how the contribution of bacteria to the phagosomal environment is often ignored. There appears to be significant heterogeneity among phagosomes, and it is important to determine whether survivors have more efficient defenses or whether they are ingested into less threatening environments than other bacteria. As part of these efforts, we discuss how monitoring or recovering bacteria from phagosomes can provide insight into the conditions they have faced. We also encourage the use of unbiased screening approaches to identify bacterial genes that are essential for survival inside neutrophil phagosomes.
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Affiliation(s)
- Mark B Hampton
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Nina Dickerhof
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
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25
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Pires D, Mandal M, Pinho J, Catalão MJ, Almeida AJ, Azevedo-Pereira JM, Gaspar MM, Anes E. Liposomal Delivery of Saquinavir to Macrophages Overcomes Cathepsin Blockade by Mycobacterium tuberculosis and Helps Control the Phagosomal Replicative Niches. Int J Mol Sci 2023; 24:ijms24021142. [PMID: 36674655 PMCID: PMC9863908 DOI: 10.3390/ijms24021142] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/21/2022] [Accepted: 01/04/2023] [Indexed: 01/10/2023] Open
Abstract
Mycobacterium tuberculosis is able to establish a chronic colonization of lung macrophages in a controlled replication manner, giving rise to a so-called latent infection. Conversely, when intracellular bacteria undergo actively uncontrolled replication rates, they provide the switch for the active infection called tuberculosis to occur. Our group found that the pathogen is able to manipulate the activity of endolysosomal enzymes, cathepsins, directly at the level of gene expression or indirectly by regulating their natural inhibitors, cystatins. To provide evidence for the crucial role of cathepsin manipulation for the success of tuberculosis bacilli in their intracellular survival, we used liposomal delivery of saquinavir. This protease inhibitor was previously found to be able to increase cathepsin proteolytic activity, overcoming the pathogen induced blockade. In this study, we demonstrate that incorporation in liposomes was able to increase the efficiency of saquinavir internalization in macrophages, reducing cytotoxicity at higher concentrations. Consequently, our results show a significant impact on the intracellular killing not only to reference and clinical strains susceptible to current antibiotic therapy but also to multidrug- and extensively drug-resistant (XDR) Mtb strains. Altogether, this indicates the manipulation of cathepsins as a fine-tuning strategy used by the pathogen to survive and replicate in host cells.
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Affiliation(s)
- David Pires
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Center for Interdisciplinary Research in Health, Católica Medical School, Universidade Católica Portuguesa, Estrada Octávio Pato, 2635-631 Rio de Mouro, Portugal
| | - Manoj Mandal
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Jacinta Pinho
- Advanced Technologies for Drug Delivery, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Maria João Catalão
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - António José Almeida
- Advanced Technologies for Drug Delivery, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - José Miguel Azevedo-Pereira
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Maria Manuela Gaspar
- Advanced Technologies for Drug Delivery, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Elsa Anes
- Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Correspondence:
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26
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Inflammation-mediated tissue damage in pulmonary tuberculosis and host-directed therapeutic strategies. Semin Immunol 2023; 65:101672. [PMID: 36469987 DOI: 10.1016/j.smim.2022.101672] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 11/04/2022] [Accepted: 11/08/2022] [Indexed: 12/04/2022]
Abstract
Treatment of tuberculosis (TB) involves the administration of anti-mycobacterial drugs for several months. The emergence of drug-resistant strains of Mycobacterium tuberculosis (Mtb, the causative agent) together with increased disease severity in people with co-morbidities such as diabetes mellitus and HIV have hampered efforts to reduce case fatality. In severe disease, TB pathology is largely attributable to over-exuberant host immune responses targeted at controlling bacterial replication. Non-resolving inflammation driven by host pro-inflammatory mediators in response to high bacterial load leads to pulmonary pathology including cavitation and fibrosis. The need to improve clinical outcomes and reduce treatment times has led to a two-pronged approach involving the development of novel antimicrobials as well as host-directed therapies (HDT) that favourably modulate immune responses to Mtb. HDT strategies incorporate aspects of immune modulation aimed at downregulating non-productive inflammatory responses and augmenting antimicrobial effector mechanisms to minimise pulmonary pathology and accelerate symptom resolution. HDT in combination with existing antimycobacterial agents offers a potentially promising strategy to improve the long-term outcome for TB patients. In this review, we describe components of the host immune response that contribute to inflammation and tissue damage in pulmonary TB, including cytokines, matrix metalloproteinases, lipid mediators, and neutrophil extracellular traps. We then proceed to review HDT directed at these pathways.
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Okugbeni N, du Toit A, Cole-Holman V, Johnson G, Loos B, Kinnear C. Measurement of Autophagy Activity Reveals Time-Dependent, Bacteria-Specific Turnover during Mycobacterium tuberculosis Infection. Pathogens 2022; 12:pathogens12010024. [PMID: 36678372 PMCID: PMC9864524 DOI: 10.3390/pathogens12010024] [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: 11/17/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
The intracellular pathogen, Mycobacterium tuberculosis (M. tb) uses various mechanisms to evade its killing. One of such is phagosomal damage and cytosolic translocation which is then targeted by the host's bactericidal autophagy pathway. It is suggested that cytosolic translocation of M. tb is time-dependent, occurring at later time points of 48 to 72 h post-infection. It is, however, not known whether increased autophagic targeting correlates with these time points of infection. We investigated the time-dependent profile of autophagy activity through the course of M. tb infection in mammalian macrophages. Autophagy activity was inferred by the turnover measurement of autophagy markers and M. tb bacilli in THP-1 and RAW 264.7 macrophages. Over a period of 4 to 72 h, we observed highest autophagy turnover at 48 h of infection in M. tb-containing cells. This was evident by the highest turnover levels of p62 and intracellular M. tb. This supports observations of phagosomal damage mostly occurring at this time point and reveal the correlation of increased autophagy activity. The findings support the preservation of autophagy activity despite M. tb infection while also highlighting time-dependent differences in M. tb-infected macrophages. Future studies may explore time-dependent exogenous autophagy targeting towards host-directed anti-tuberculosis therapy.
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Affiliation(s)
- Naomi Okugbeni
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, US/SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
- South African Medical Research Council Genomics Centre, Tygerberg 7505, South Africa
| | - André du Toit
- Neuro Research Group, Department of Physiological Sciences, Faculty of Sciences, Stellenbosch University, Stellenbosch 7602, South Africa
| | - Victoria Cole-Holman
- South African Medical Research Council Genomics Centre, Tygerberg 7505, South Africa
| | - Glynis Johnson
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, US/SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
| | - Ben Loos
- Neuro Research Group, Department of Physiological Sciences, Faculty of Sciences, Stellenbosch University, Stellenbosch 7602, South Africa
| | - Craig Kinnear
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, US/SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
- South African Medical Research Council Genomics Centre, Tygerberg 7505, South Africa
- Correspondence:
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Rawat BS, Kumar D, Soni V, Rosenn EH. Therapeutic Potentials of Immunometabolomic Modulations Induced by Tuberculosis Vaccination. Vaccines (Basel) 2022; 10:vaccines10122127. [PMID: 36560537 PMCID: PMC9781011 DOI: 10.3390/vaccines10122127] [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: 10/19/2022] [Revised: 12/03/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022] Open
Abstract
Metabolomics is emerging as a promising tool to understand the effect of immunometabolism for the development of novel host-directed alternative therapies. Immunometabolism can modulate both innate and adaptive immunity in response to pathogens and vaccinations. For instance, infections can affect lipid and amino acid metabolism while vaccines can trigger bile acid and carbohydrate pathways. Metabolomics as a vaccinomics tool, can provide a broader picture of vaccine-induced biochemical changes and pave a path to potentiate the vaccine efficacy. Its integration with other systems biology tools or treatment modes can enhance the cure, response rate, and control over the emergence of drug-resistant strains. Mycobacterium tuberculosis (Mtb) infection can remodel the host metabolism for its survival, while there are many biochemical pathways that the host adjusts to combat the infection. Similarly, the anti-TB vaccine, Bacillus Calmette-Guerin (BCG), was also found to affect the host metabolic pathways thus modulating immune responses. In this review, we highlight the metabolomic schema of the anti-TB vaccine and its therapeutic applications. Rewiring of immune metabolism upon BCG vaccination induces different signaling pathways which lead to epigenetic modifications underlying trained immunity. Metabolic pathways such as glycolysis, central carbon metabolism, and cholesterol synthesis play an important role in these aspects of immunity. Trained immunity and its applications are increasing day by day and it can be used to develop the next generation of vaccines to treat various other infections and orphan diseases. Our goal is to provide fresh insight into this direction and connect various dots to develop a conceptual framework.
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Affiliation(s)
- Bhupendra Singh Rawat
- Center for Immunity and Inflammation, Rutgers New Jersey Medical School, Newark, NJ 07103, USA
| | - Deepak Kumar
- Department of Zoology, University of Rajasthan, Jaipur 302004, Rajasthan, India
| | - Vijay Soni
- Division of Infectious Diseases, Weill Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
- Correspondence:
| | - Eric H. Rosenn
- School of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
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Chandra P, Grigsby SJ, Philips JA. Immune evasion and provocation by Mycobacterium tuberculosis. Nat Rev Microbiol 2022; 20:750-766. [PMID: 35879556 PMCID: PMC9310001 DOI: 10.1038/s41579-022-00763-4] [Citation(s) in RCA: 106] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2022] [Indexed: 02/07/2023]
Abstract
Mycobacterium tuberculosis, the causative agent of tuberculosis, has infected humans for millennia. M. tuberculosis is well adapted to establish infection, persist in the face of the host immune response and be transmitted to uninfected individuals. Its ability to complete this infection cycle depends on it both evading and taking advantage of host immune responses. The outcome of M. tuberculosis infection is often a state of equilibrium characterized by immunological control and bacterial persistence. Recent data have highlighted the diverse cell populations that respond to M. tuberculosis infection and the dynamic changes in the cellular and intracellular niches of M. tuberculosis during the course of infection. M. tuberculosis possesses an arsenal of protein and lipid effectors that influence macrophage functions and inflammatory responses; however, our understanding of the role that specific bacterial virulence factors play in the context of diverse cellular reservoirs and distinct infection stages is limited. In this Review, we discuss immune evasion and provocation by M. tuberculosis during its infection cycle and describe how a more detailed molecular understanding is crucial to enable the development of novel host-directed therapies, disease biomarkers and effective vaccines.
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Affiliation(s)
- Pallavi Chandra
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St Louis, MO, USA
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA
| | - Steven J Grigsby
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St Louis, MO, USA
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA
| | - Jennifer A Philips
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St Louis, MO, USA.
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA.
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Nisa A, Kipper FC, Panigrahy D, Tiwari S, Kupz A, Subbian S. Different modalities of host cell death and their impact on Mycobacterium tuberculosis infection. Am J Physiol Cell Physiol 2022; 323:C1444-C1474. [PMID: 36189975 PMCID: PMC9662802 DOI: 10.1152/ajpcell.00246.2022] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/16/2022] [Accepted: 09/25/2022] [Indexed: 11/22/2022]
Abstract
Mycobacterium tuberculosis (Mtb) is the pathogen that causes tuberculosis (TB), a leading infectious disease of humans worldwide. One of the main histopathological hallmarks of TB is the formation of granulomas comprised of elaborately organized aggregates of immune cells containing the pathogen. Dissemination of Mtb from infected cells in the granulomas due to host and mycobacterial factors induces multiple cell death modalities in infected cells. Based on molecular mechanism, morphological characteristics, and signal dependency, there are two main categories of cell death: programmed and nonprogrammed. Programmed cell death (PCD), such as apoptosis and autophagy, is associated with a protective response to Mtb by keeping the bacteria encased within dead macrophages that can be readily phagocytosed by arriving in uninfected or neighboring cells. In contrast, non-PCD necrotic cell death favors the pathogen, resulting in bacterial release into the extracellular environment. Multiple types of cell death in the PCD category, including pyroptosis, necroptosis, ferroptosis, ETosis, parthanatos, and PANoptosis, may be involved in Mtb infection. Since PCD pathways are essential for host immunity to Mtb, therapeutic compounds targeting cell death signaling pathways have been experimentally tested for TB treatment. This review summarizes different modalities of Mtb-mediated host cell deaths, the molecular mechanisms underpinning host cell death during Mtb infection, and its potential implications for host immunity. In addition, targeting host cell death pathways as potential therapeutic and preventive approaches against Mtb infection is also discussed.
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Affiliation(s)
- Annuurun Nisa
- Public Health Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey
| | - Franciele C Kipper
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Dipak Panigrahy
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Sangeeta Tiwari
- Department of Biological Sciences, Border Biomedical Research Center (BBRC), University of Texas, El Paso, Texas
| | - Andreas Kupz
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine (AITHM), James Cook University, Townsville, Queensland, Australia
| | - Selvakumar Subbian
- Public Health Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey
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31
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Simper JD, Perez E, Schlesinger LS, Azad AK. Resistance and Susceptibility Immune Factors at Play during Mycobacterium tuberculosis Infection of Macrophages. Pathogens 2022; 11:pathogens11101153. [PMID: 36297211 PMCID: PMC9611686 DOI: 10.3390/pathogens11101153] [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: 08/26/2022] [Revised: 09/27/2022] [Accepted: 10/01/2022] [Indexed: 11/28/2022] Open
Abstract
Tuberculosis (TB), caused by infection with Mycobacterium tuberculosis (M.tb), is responsible for >1.5 million deaths worldwide annually. Innate immune cells, especially macrophages, are the first to encounter M.tb, and their response dictates the course of infection. During infection, macrophages exert a variety of immune factors involved in either controlling or promoting the growth of M.tb. Research on this topic has been performed in both in vitro and in vivo animal models with discrepant results in some cases based on the model of study. Herein, we review macrophage resistance and susceptibility immune factors, focusing primarily on recent advances in the field. We include macrophage cellular pathways, bioeffector proteins and molecules, cytokines and chemokines, associated microbiological factors and bacterial strains, and host genetic factors in innate immune genes. Recent advances in mechanisms underlying macrophage resistance and susceptibility factors will aid in the successful development of host-directed therapeutics, a topic emphasized throughout this review.
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Affiliation(s)
- Jan D. Simper
- Host-Pathogen Interaction Program, Texas Biomedical Research Institute, 8715 W. Military Drive, San Antonio, TX 78227, USA
- Department of Microbiology, Immunology and Molecular Genetics, UT Health Science Center San Antonio, San Antonio, TX 78229, USA
| | - Esteban Perez
- Host-Pathogen Interaction Program, Texas Biomedical Research Institute, 8715 W. Military Drive, San Antonio, TX 78227, USA
- Translational Sciences Program, UT Health San Antonio Graduate School of Biomedical Sciences, San Antonio, TX 78229, USA
| | - Larry S. Schlesinger
- Host-Pathogen Interaction Program, Texas Biomedical Research Institute, 8715 W. Military Drive, San Antonio, TX 78227, USA
- Correspondence: (L.S.S.); (A.K.A.); Tel.: +1-210-258-9578 (L.S.S.); +1-210-258-9467 (A.K.A.)
| | - Abul K. Azad
- Host-Pathogen Interaction Program, Texas Biomedical Research Institute, 8715 W. Military Drive, San Antonio, TX 78227, USA
- Correspondence: (L.S.S.); (A.K.A.); Tel.: +1-210-258-9578 (L.S.S.); +1-210-258-9467 (A.K.A.)
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Campos PC, Cunha DT, Souza-Costa LP, Shiloh MU, Franco LH. Bag it, tag it: ubiquitin ligases and host resistance to Mycobacterium tuberculosis. Trends Microbiol 2022; 30:973-985. [PMID: 35491351 PMCID: PMC9474620 DOI: 10.1016/j.tim.2022.03.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/26/2022] [Accepted: 03/29/2022] [Indexed: 11/29/2022]
Abstract
Infection with Mycobacterium tuberculosis (Mtb), the etiological agent of tuberculosis (TB), remains a significant global epidemic. Host resistance to Mtb depends on both adaptive and innate immunity mechanisms, including development of antigen-specific CD4 and CD8 T cells, production of inflammatory cytokines, bacterial phagocytosis and destruction within phagolysosomes, host cell apoptosis, and autophagy. A key regulatory mechanism in innate immunity is the attachment of the small protein ubiquitin to protein and lipid targets by the enzymatic activity of ubiquitin ligases. Here, we summarize the latest advances on the role of ubiquitination and ubiquitin ligases in host immunity against Mtb, with a focus on innate immunity signaling, inflammation, and antimicrobial autophagy. Understanding how ubiquitin ligases mediate immunity to Mtb, and the specific substrates of distinct ubiquitin ligases in the context of Mtb infection, could facilitate development of new host-directed antimicrobials.
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Affiliation(s)
- Priscila C Campos
- Department of Internal Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-9113, USA
| | - Danielle T Cunha
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6627, Belo Horizonte, MG 31270-901, Brazil
| | - Luiz P Souza-Costa
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6627, Belo Horizonte, MG 31270-901, Brazil
| | - Michael U Shiloh
- Department of Internal Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-9113, USA; Department of Microbiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-9113, USA.
| | - Luis H Franco
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6627, Belo Horizonte, MG 31270-901, Brazil.
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Gaffney E, Murphy D, Walsh A, Connolly S, Basdeo SA, Keane J, Phelan JJ. Defining the role of neutrophils in the lung during infection: Implications for tuberculosis disease. Front Immunol 2022; 13:984293. [PMID: 36203565 PMCID: PMC9531133 DOI: 10.3389/fimmu.2022.984293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/30/2022] [Indexed: 11/25/2022] Open
Abstract
Neutrophils are implicated in the pathogenesis of many diseases involving inflammation. Neutrophils are also critical to host defence and have a key role in the innate immune response to infection. Despite their efficiencies against a wide range of pathogens however, their ability to contain and combat Mycobacterium tuberculosis (Mtb) in the lung remains uncertain and contentious. The host response to Mtb infection is very complex, involving the secretion of various cytokines and chemokines from a wide variety of immune cells, including neutrophils, macrophages, monocytes, T cells, B cells, NK cells and dendritic cells. Considering the contributing role neutrophils play in the advancement of many diseases, understanding how an inflammatory microenvironment affects neutrophils, and how neutrophils interact with other immune cells, particularly in the context of the infected lung, may aid the design of immunomodulatory therapies. In the current review, we provide a brief overview of the mechanisms that underpin pathogen clearance by neutrophils and discuss their role in the context of Mtb and non-Mtb infection. Next, we examine the current evidence demonstrating how neutrophils interact with a range of human and non-human immune cells and how these interactions can differentially prime, activate and alter a repertoire of neutrophil effector functions. Furthermore, we discuss the metabolic pathways employed by neutrophils in modulating their response to activation, pathogen stimulation and infection. To conclude, we highlight knowledge gaps in the field and discuss plausible novel drug treatments that target host neutrophil metabolism and function which could hold therapeutic potential for people suffering from respiratory infections.
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34
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Wang J, Le W, Yan T, Jiang J, Chen B. Usage of Nanoparticles to Alter Neutrophils' Function for Therapy. ACS Biomater Sci Eng 2022; 8:3676-3689. [PMID: 36018296 DOI: 10.1021/acsbiomaterials.2c00711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Neutrophils, the most abundant white blood cells in the human body, are important immune cells responsible for the innate immune response. Neutrophils can migrate to inflammatory areas, such as tumor sites and infection sites, because of chemotaxis. Neutrophil-based nanomaterials, such as neutrophil-nanomaterial composites and neutrophil membrane-based nanomaterials, can help the drug or imaging agent gather in the inflammatory area with the help of chemotaxis. In addition, some nanomaterials can interfere with the function of neutrophils to treat tissue damage caused by excessive local accumulation of neutrophils. This review focuses on the interaction between nanomaterials and neutrophils as well as the applications of neutrophil-based nanomaterials and neutrophil-interfering nanomaterials.
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Affiliation(s)
- Jing Wang
- Institute for Regenerative Medicine, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, China
| | - Wenjun Le
- Shanghai East Hospital Ji'an Hospital, 80 Ji'an South Road, Ji'an City 343000, Jiangxi Province, China
| | - Tinghua Yan
- Department of Interventional Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jinhua Jiang
- Department of Interventional Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bingdi Chen
- Institute for Regenerative Medicine, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, China
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35
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Geng X, Wu X, Yang Q, Xin H, Zhang B, Wang D, Liu L, Liu S, Chen Q, Liu Z, Zhang M, Pan S, Zhang X, Gao L, Jin Q. Whole transcriptome sequencing reveals neutrophils’ transcriptional landscape associated with active tuberculosis. Front Immunol 2022; 13:954221. [PMID: 36059536 PMCID: PMC9436479 DOI: 10.3389/fimmu.2022.954221] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 07/29/2022] [Indexed: 11/13/2022] Open
Abstract
Neutrophils have been recognized to play an important role in the pathogenesis of tuberculosis in recent years. Interferon-induced blood transcriptional signatures in ATB are predominantly driven by neutrophils. In this study, we performed global RNA-seq on peripheral blood neutrophils from active tuberculosis patients (ATB, n=15); latent tuberculosis infections (LTBI, n=22); and healthy controls (HC, n=21). The results showed that greater perturbations of gene expression patterns happened in neutrophils from ATB individuals than HC or those with LTBI, and a total of 344 differentially expressed genes (DEGs) were observed. Functional enrichment analysis showed that besides the interferon signaling pathway, multiple pattern recognition receptor pathways were significantly activated in ATB, such as NOD-like receptors and Toll-like receptors. Meanwhile, we also observed that the expression of genes related to endocytosis, secretory granules, and neutrophils degranulation were downregulated. Our data also showed that the NF-κB signaling pathway might be inhibited in patients with ATB, which could increase Mycobacterium tuberculosis survival and lead to active tuberculosis status. Furthermore, we validated the accuracy of some differentially expressed genes in an independent cohort using quantitative PCR, and obtained three novel genes (RBM3, CSRNP1, SRSF5) with the ability to discriminate active tuberculosis from LTBI and HC.
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Affiliation(s)
- Xingzhu Geng
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, and Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaolin Wu
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, and Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qianting Yang
- Guangdong Key Laboratory for Emerging Infectious Diseases, Shenzhen Key Laboratory of Infection & Immunity, Shenzhen Third People’s Hospital, Shenzhen, China
| | - Henan Xin
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, and Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bin Zhang
- Center for Diseases Control and Prevention of Zhongmu, Zhengzhou, China
| | - Dakuan Wang
- Center for Diseases Control and Prevention of Zhongmu, Zhengzhou, China
| | - Liguo Liu
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, and Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Song Liu
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, and Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qi Chen
- Guangdong Key Laboratory for Emerging Infectious Diseases, Shenzhen Key Laboratory of Infection & Immunity, Shenzhen Third People’s Hospital, Shenzhen, China
| | - Zisen Liu
- Center for Diseases Control and Prevention of Zhongmu, Zhengzhou, China
| | - Mingxia Zhang
- Guangdong Key Laboratory for Emerging Infectious Diseases, Shenzhen Key Laboratory of Infection & Immunity, Shenzhen Third People’s Hospital, Shenzhen, China
| | - Shouguo Pan
- Center for Diseases Control and Prevention of Zhongmu, Zhengzhou, China
| | - Xiaobing Zhang
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, and Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Qi Jin, ; Xiaobing Zhang, ; Lei Gao,
| | - Lei Gao
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, and Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Qi Jin, ; Xiaobing Zhang, ; Lei Gao,
| | - Qi Jin
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, and Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Qi Jin, ; Xiaobing Zhang, ; Lei Gao,
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Jahanbani F, Maynard RD, Sing JC, Jahanbani S, Perrino JJ, Spacek DV, Davis RW, Snyder MP. Phenotypic characteristics of peripheral immune cells of Myalgic encephalomyelitis/chronic fatigue syndrome via transmission electron microscopy: A pilot study. PLoS One 2022; 17:e0272703. [PMID: 35943990 PMCID: PMC9362953 DOI: 10.1371/journal.pone.0272703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 07/25/2022] [Indexed: 01/06/2023] Open
Abstract
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a complex chronic multi-systemic disease characterized by extreme fatigue that is not improved by rest, and worsens after exertion, whether physical or mental. Previous studies have shown ME/CFS-associated alterations in the immune system and mitochondria. We used transmission electron microscopy (TEM) to investigate the morphology and ultrastructure of unstimulated and stimulated ME/CFS immune cells and their intracellular organelles, including mitochondria. PBMCs from four participants were studied: a pair of identical twins discordant for moderate ME/CFS, as well as two age- and gender- matched unrelated subjects-one with an extremely severe form of ME/CFS and the other healthy. TEM analysis of CD3/CD28-stimulated T cells suggested a significant increase in the levels of apoptotic and necrotic cell death in T cells from ME/CFS patients (over 2-fold). Stimulated Tcells of ME/CFS patients also had higher numbers of swollen mitochondria. We also found a large increase in intracellular giant lipid droplet-like organelles in the stimulated PBMCs from the extremely severe ME/CFS patient potentially indicative of a lipid storage disorder. Lastly, we observed a slight increase in platelet aggregation in stimulated cells, suggestive of a possible role of platelet activity in ME/CFS pathophysiology and disease severity. These results indicate extensive morphological alterations in the cellular and mitochondrial phenotypes of ME/CFS patients' immune cells and suggest new insights into ME/CFS biology.
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Affiliation(s)
- Fereshteh Jahanbani
- Department of Genetics, Stanford University School of Medicine, Stanford, California, United States of America
| | - Rajan D. Maynard
- Department of Genetics, Stanford University School of Medicine, Stanford, California, United States of America
| | - Justin Cyril Sing
- Department of Molecular Genetics, Donnelly Centre, University of Toronto, Toronto, Ontario, Canada
| | - Shaghayegh Jahanbani
- Division of Immunology and Rheumatology, Stanford University School of Medicine, and VA Palo Alto Health Care System, Palo Alto, California, United States of America
| | - John J. Perrino
- Stanford Cell Sciences Imaging Facility (CSIF), Stanford University School of Medicine Stanford, Stanford, California, United States of America
| | - Damek V. Spacek
- Karius Incorporated, Redwood City, California, United States of America
| | - Ronald W. Davis
- ME/CFS Collaborative Research Center at Stanford, Stanford Genome Technology Center, Stanford University School of Medicine, Palo Alto, California, United States of America
| | - Michael P. Snyder
- Department of Genetics, Stanford University School of Medicine, Stanford, California, United States of America
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Abstract
Macrophage surface receptors are critical for pathogen defense, as they are the gatekeepers for pathogen entry and sensing, which trigger robust immune responses. TREM2 (triggering receptor expressed on myeloid cells 2) is a transmembrane surface receptor that mediates anti-inflammatory immune signaling. A recent study showed that TREM2 is a receptor for mycolic acids in the mycobacterial cell wall and inhibits macrophage activation. However, the underlying functional mechanism of how TREM2 regulates the macrophage antimycobacterial response remains unclear. Here, we show that Mycobacterium tuberculosis, the causative agent for tuberculosis, specifically binds to human TREM2 to disable the macrophage antibacterial response. Live but not killed mycobacteria specifically trigger the upregulation of TREM2 during macrophage infection through a mechanism dependent on STING (the stimulator of interferon genes). TREM2 facilitated uptake of M. tuberculosis into macrophages and is responsible for blocking the production of tumor necrosis factor alpha (TNF-α), interleukin-1β (IL-1β), and reactive oxygen species (ROS), while enhancing the production of interferon-β (IFN-β) and IL-10. TREM2-mediated blockade of ROS production promoted the survival of M. tuberculosis within infected macrophages. Consistent with this, genetic deletion or antibody-mediated neutralization of TREM2 reduced the intracellular survival of M. tuberculosis through enhanced production of ROS. Importantly, inhibition of type I IFN signaling in TREM2-overexpressing macrophages restored the ability of these cells to produce inflammatory cytokines and ROS, resulting in normal levels of intracellular bacteria killing. Collectively, our study identifies TREM2 as an attractive host receptor for host-directed antimycobacterial therapeutics. IMPORTANCE Mycobacterium tuberculosis is one of the most ancient bacterial pathogens and remains the leading cause of death from a single bacterial agent. The success of M. tuberculosis relies greatly on its ability to parasitize and disable its host macrophages. Previous studies have found that M. tuberculosis uses its unique cell wall lipids to manipulate the immune response by binding to specific surface receptors on macrophages. Our study reveals that M. tuberculosis binds to TREM2, an immunomodulatory receptor expressed on macrophages, to facilitate a "silent" mode of entry. Increased levels of TREM2 triggered by intracellular sensing of M. tuberculosis promoted the intracellular survival of M. tuberculosis through type I IFN-driven inhibition of reactive oxygen species (ROS) and proinflammatory cytokine production. Importantly, deletion of TREM2 reversed the effects of "silent" entry and resulted in increased production of inflammatory cytokines, generation of ROS, and cell death. As such, antibody-mediated or pharmacological targeting of TREM2 could be a promising strategy for novel treatments against M. tuberculosis infection.
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Abstract
The daily removal of billions of apoptotic cells in the human body via the process of efferocytosis is essential for homeostasis. To allow for this continuous efferocytosis, rapid phenotypic changes occur in the phagocytes enabling them to engulf and digest the apoptotic cargo. In addition, efferocytosis is actively anti-inflammatory and promotes resolution. Owing to its ubiquitous nature and the sheer volume of cell turnover, efferocytosis is a point of vulnerability. Aberrations in efferocytosis are associated with numerous inflammatory pathologies, including atherosclerosis, cancer and infections. The recent exciting discoveries defining the molecular machinery involved in efferocytosis have opened many avenues for therapeutic intervention, with several agents now in clinical trials.
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Affiliation(s)
- Parul Mehrotra
- Unit for Cell Clearance in Health and Disease, VIB Center for Inflammation Research, Ghent, Belgium
| | - Kodi S Ravichandran
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
- The Center for Cell Clearance, University of Virginia, Charlottesville, VA, USA.
- Division of Immunobiology, Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA.
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Pereira IS, Pais SV, Borges V, Borrego MJ, Gomes JP, Mota LJ. The Type III Secretion Effector CteG Mediates Host Cell Lytic Exit of Chlamydia trachomatis. Front Cell Infect Microbiol 2022; 12:902210. [PMID: 35903198 PMCID: PMC9318579 DOI: 10.3389/fcimb.2022.902210] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 05/25/2022] [Indexed: 11/17/2022] Open
Abstract
Chlamydia trachomatis is an obligate intracellular bacterium causing ocular and urogenital infections in humans that are a significant burden worldwide. The completion of its characteristic infectious cycle relies on the manipulation of several host cell processes by numerous chlamydial type III secretion effector proteins. We previously identified the C. trachomatis CteG effector and showed it localizes at the host cell plasma membrane at late stages of infection. Here, we showed that, from 48 h post-infection, mammalian cells infected by wild-type C. trachomatis contained more infectious chlamydiae in the culture supernatant than cells infected by a CteG-deficient strain. This phenotype was CteG-dependent as it could be complemented in cells infected by the CteG-deficient strain carrying a plasmid encoding CteG. Furthermore, we detected a CteG-dependent defect on host cell cytotoxicity, indicating that CteG mediates chlamydial lytic exit. Previous studies showed that Pgp4, a global regulator of transcription encoded in the C. trachomatis virulence plasmid, also mediates chlamydial lytic exit. However, by using C. trachomatis strains encoding or lacking Pgp4, we showed that production and localization of CteG are not regulated by Pgp4. A C. trachomatis strain lacking both CteG and Pgp4 was as defective in promoting host cell cytotoxicity as mutant strains lacking only CteG or Pgp4. Furthermore, CteG overproduction in a plasmid suppressed the host cell cytotoxic defect of CteG- and Pgp4-deficient chlamydiae. Overall, we revealed the first chlamydial type III secretion effector involved in host cell lytic exit. Our data indicates that CteG and Pgp4 participate in a single cascade of events, but involving multiple layers of regulation, leading to lysis of host cells and release of the infectious chlamydiae.
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Affiliation(s)
- Inês Serrano Pereira
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
- UCIBIO – Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Sara Vilela Pais
- UCIBIO – Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Vítor Borges
- Bioinformatics Unit, Department of Infectious Diseases, National Institute of Health Dr. Ricardo Jorge (INSA), Lisbon, Portugal
| | - Maria José Borrego
- Bioinformatics Unit, Department of Infectious Diseases, National Institute of Health Dr. Ricardo Jorge (INSA), Lisbon, Portugal
| | - João Paulo Gomes
- Bioinformatics Unit, Department of Infectious Diseases, National Institute of Health Dr. Ricardo Jorge (INSA), Lisbon, Portugal
| | - Luís Jaime Mota
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
- UCIBIO – Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
- *Correspondence: Luís Jaime Mota,
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40
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Quan DH, Kwong AJ, Hansbro PM, Britton WJ. No smoke without fire: the impact of cigarette smoking on the immune control of tuberculosis. Eur Respir Rev 2022; 31:210252. [PMID: 35675921 PMCID: PMC9488690 DOI: 10.1183/16000617.0252-2021] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 03/20/2022] [Indexed: 12/12/2022] Open
Abstract
Cigarette smoke (CS) exposure is a key risk factor for both active and latent tuberculosis (TB). It is associated with delayed diagnosis, more severe disease progression, unfavourable treatment outcomes and relapse after treatment. Critically, CS exposure is common in heavily populated areas with a high burden of TB, such as China, India and the Russian Federation. It is therefore prudent to evaluate interventions for TB while taking into account the immunological impacts of CS exposure. This review is a mechanistic examination of how CS exposure impairs innate barrier defences, as well as alveolar macrophage, neutrophil, dendritic cell and T-cell functions, in the context of TB infection and disease.
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Affiliation(s)
- Diana H Quan
- Tuberculosis Research Program at the Centenary Institute, The University of Sydney, Sydney, Australia
- D.H. Quan and W.J. Britton contributed equally to this article as lead authors and supervised the work
| | | | - Philip M Hansbro
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, Sydney, Australia
| | - Warwick J Britton
- Tuberculosis Research Program at the Centenary Institute, The University of Sydney, Sydney, Australia
- Dept of Clinical Immunology, Royal Prince Alfred Hospital, Sydney, Australia
- D.H. Quan and W.J. Britton contributed equally to this article as lead authors and supervised the work
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41
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Brandenburg J, Heyckendorf J, Marwitz F, Zehethofer N, Linnemann L, Gisch N, Karaköse H, Reimann M, Kranzer K, Kalsdorf B, Sanchez-Carballo P, Weinkauf M, Scholz V, Malm S, Homolka S, Gaede KI, Herzmann C, Schaible UE, Hölscher C, Reiling N, Schwudke D. Tuberculostearic Acid-Containing Phosphatidylinositols as Markers of Bacterial Burden in Tuberculosis. ACS Infect Dis 2022; 8:1303-1315. [PMID: 35763439 PMCID: PMC9274766 DOI: 10.1021/acsinfecdis.2c00075] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
![]()
One-fourth of the
global human population is estimated to be infected
with strains of the Mycobacterium tuberculosis complex (MTBC), the causative agent of tuberculosis (TB). Using
lipidomic approaches, we show that tuberculostearic acid (TSA)-containing
phosphatidylinositols (PIs) are molecular markers for infection with
clinically relevant MTBC strains and signify bacterial burden. For
the most abundant lipid marker, detection limits of ∼102 colony forming units (CFUs) and ∼103 CFUs
for bacterial and cell culture systems were determined, respectively.
We developed a targeted lipid assay, which can be performed within
a day including sample preparation—roughly 30-fold faster than
in conventional methods based on bacterial culture. This indirect
and culture-free detection approach allowed us to determine pathogen
loads in infected murine macrophages, human neutrophils, and murine
lung tissue. These marker lipids inferred from mycobacterial PIs were
found in higher levels in peripheral blood mononuclear cells of TB
patients compared to healthy individuals. Moreover, in a small cohort
of drug-susceptible TB patients, elevated levels of these molecular
markers were detected at the start of therapy and declined upon successful
anti-TB treatment. Thus, the concentration of TSA-containing PIs can
be used as a correlate for the mycobacterial burden in experimental
models and in vitro systems and may prospectively also provide a clinically
relevant tool to monitor TB severity.
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Affiliation(s)
- Julius Brandenburg
- Division of Microbial Interface Biology, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Jan Heyckendorf
- Division of Clinical Infectious Disease, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany.,German Center for Infection Research, Clinical Tuberculosis Center, 23845 Borstel, Germany
| | - Franziska Marwitz
- Division of Bioanalytical Chemistry, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany.,German Center for Infection Research, Thematic Translational Unit Tuberculosis, Partner Site Hamburg-Lübeck-Borstel-Riems, 23845 Borstel, Germany
| | - Nicole Zehethofer
- Division of Bioanalytical Chemistry, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany.,German Center for Infection Research, Thematic Translational Unit Tuberculosis, Partner Site Hamburg-Lübeck-Borstel-Riems, 23845 Borstel, Germany
| | - Lara Linnemann
- Division of Cellular Microbiology, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Nicolas Gisch
- Division of Bioanalytical Chemistry, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Hande Karaköse
- Division of Bioanalytical Chemistry, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany.,German Center for Infection Research, Thematic Translational Unit Tuberculosis, Partner Site Hamburg-Lübeck-Borstel-Riems, 23845 Borstel, Germany
| | - Maja Reimann
- Division of Clinical Infectious Disease, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany.,German Center for Infection Research, Clinical Tuberculosis Center, 23845 Borstel, Germany
| | - Katharina Kranzer
- National Reference Center for Mycobacteria, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Barbara Kalsdorf
- Division of Clinical Infectious Disease, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany.,German Center for Infection Research, Clinical Tuberculosis Center, 23845 Borstel, Germany
| | - Patricia Sanchez-Carballo
- Division of Clinical Infectious Disease, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany.,German Center for Infection Research, Clinical Tuberculosis Center, 23845 Borstel, Germany
| | - Michael Weinkauf
- Division of Bioanalytical Chemistry, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Verena Scholz
- Division of Bioanalytical Chemistry, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Sven Malm
- Division of Molecular and Experimental Mycobacteriology, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Susanne Homolka
- Division of Molecular and Experimental Mycobacteriology, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Karoline I Gaede
- BioMaterialBank Nord, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany.,German Center for Lung Research (DZL), Airway Research Center North (ARCN), Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Christian Herzmann
- Center for Clinical Studies, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Ulrich E Schaible
- German Center for Infection Research, Thematic Translational Unit Tuberculosis, Partner Site Hamburg-Lübeck-Borstel-Riems, 23845 Borstel, Germany.,Division of Cellular Microbiology, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Christoph Hölscher
- German Center for Infection Research, Thematic Translational Unit Tuberculosis, Partner Site Hamburg-Lübeck-Borstel-Riems, 23845 Borstel, Germany.,Division of Infection Immunology, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Norbert Reiling
- Division of Microbial Interface Biology, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany.,German Center for Infection Research, Thematic Translational Unit Tuberculosis, Partner Site Hamburg-Lübeck-Borstel-Riems, 23845 Borstel, Germany
| | - Dominik Schwudke
- Division of Bioanalytical Chemistry, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany.,German Center for Infection Research, Thematic Translational Unit Tuberculosis, Partner Site Hamburg-Lübeck-Borstel-Riems, 23845 Borstel, Germany.,German Center for Lung Research (DZL), Airway Research Center North (ARCN), Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
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42
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Zha BS, Desvignes L, Fergus TJ, Cornelius A, Cheng TY, Moody DB, Ernst JD. Bacterial Strain-Dependent Dissociation of Cell Recruitment and Cell-to-Cell Spread in Early M. tuberculosis Infection. mBio 2022; 13:e0133222. [PMID: 35695454 PMCID: PMC9239178 DOI: 10.1128/mbio.01332-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 05/16/2022] [Indexed: 11/20/2022] Open
Abstract
In the initial stage of respiratory infection, Mycobacterium tuberculosis traverses from alveolar macrophages to phenotypically diverse monocyte-derived phagocytes and neutrophils in the lung parenchyma. Here, we compare the in vivo kinetics of early bacterial growth and cell-to-cell spread of two strains of M. tuberculosis: a lineage 2 strain, 4334, and the widely studied lineage 4 strain H37Rv. Using flow cytometry, live cell sorting of phenotypic subsets, and quantitation of bacteria in cells of the distinct subsets, we found that 4334 induces less leukocyte influx into the lungs but demonstrates earlier population expansion and cell-to-cell spread. The earlier spread of 4334 to recruited cells, including monocyte-derived dendritic cells, is accompanied by earlier and greater magnitude of CD4+ T cell activation. The results provide evidence that strain-specific differences in interactions with lung leukocytes can shape adaptive immune responses in vivo. IMPORTANCE Tuberculosis is a leading infectious disease killer worldwide and is caused by Mycobacterium tuberculosis. After exposure to M. tuberculosis, outcomes range from apparent elimination to active disease. Early innate immune responses may contribute to differences in outcomes, yet it is not known how bacterial strains alter the early dynamics of innate immune and T cell responses. We infected mice with distinct strains of M. tuberculosis and discovered striking differences in innate cellular recruitment, cell-to-cell spread of bacteria in the lungs, and kinetics of initiation of antigen-specific CD4 T cell responses. We also found that M. tuberculosis can spread beyond alveolar macrophages even before a large influx of inflammatory cells. These results provide evidence that distinct strains of M. tuberculosis can exhibit differential kinetics in cell-to-cell spread which is not directly linked to early recruitment of phagocytes but is subsequently linked to adaptive immune responses.
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Affiliation(s)
- B. Shoshana Zha
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco, California, USA
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, California, USA
| | - Ludovic Desvignes
- Department of Medicine, New York University School of Medicine, New York, New York, USA
| | - Tawania J. Fergus
- Department of Medicine, New York University School of Medicine, New York, New York, USA
| | - Amber Cornelius
- Department of Medicine, New York University School of Medicine, New York, New York, USA
| | - Tan-Yun Cheng
- Division of Rheumatology, Immunity and Inflammation, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - D. Branch Moody
- Division of Rheumatology, Immunity and Inflammation, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Joel D. Ernst
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, California, USA
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43
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Rani A, Alam A, Ahmad F, P. M, Saurabh A, Zarin S, Mitra DK, Hasnain SE, Ehtesham NZ. Mycobacterium tuberculosis Methyltransferase Rv1515c Can Suppress Host Defense Mechanisms by Modulating Immune Functions Utilizing a Multipronged Mechanism. Front Mol Biosci 2022; 9:906387. [PMID: 35813825 PMCID: PMC9263924 DOI: 10.3389/fmolb.2022.906387] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
Mycobacterium tuberculosis (M. tb) gene Rv1515c encodes a conserved hypothetical protein exclusively present within organisms of MTB complex and absent in non-pathogenic mycobacteria. In silico analysis revealed that Rv1515c contain S-adenosylmethionine binding site and methyltransferase domain. The DNA binding and DNA methyltransferase activity of Rv1515c was confirmed in vitro. Knock-in of Rv1515c in a model mycobacteria M. smegmatis (M. s_Rv1515c) resulted in remarkable physiological and morphological changes and conferred the recombinant strain with an ability to adapt to various stress conditions, including resistance to TB drugs. M. s_Rv1515c was phagocytosed at a greater rate and displayed extended intra-macrophage survival in vitro. Recombinant M. s_Rv1515c contributed to enhanced virulence by suppressing the host defense mechanisms including RNS and ROS production, and apoptotic clearance. M. s_Rv1515c, while suppressing the phagolysosomal maturation, modulated pro-inflammatory cytokine production and also inhibited antigen presentation by downregulating the expression of MHC-I/MHC-II and co-stimulatory signals CD80 and CD86. Mice infected with M. s_Rv1515c produced more Treg cells than vector control (M. s_Vc) and exhibited reduced effector T cell responses, along-with reduced expression of macrophage activation markers in the chronic phase of infection. M. s_Rv1515c was able to survive in the major organs of mice up to 7 weeks post-infection. These results indicate a crucial role of Rv1515c in M. tb pathogenesis.
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Affiliation(s)
- Anshu Rani
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi (IIT-D), New Delhi, India
- ICMR-National Institute of Pathology, Safdarjung Hospital Campus, New Delhi, India
| | - Anwar Alam
- ICMR-National Institute of Pathology, Safdarjung Hospital Campus, New Delhi, India
| | - Faraz Ahmad
- ICMR-National Institute of Pathology, Safdarjung Hospital Campus, New Delhi, India
| | - Manjunath P.
- ICMR-National Institute of Pathology, Safdarjung Hospital Campus, New Delhi, India
| | - Abhinav Saurabh
- Department of Transplant Immunology and Immunogenetics, All India Institute of Medical Sciences, New Delhi, India
| | - Sheeba Zarin
- ICMR-National Institute of Pathology, Safdarjung Hospital Campus, New Delhi, India
| | - Dipendra Kumar Mitra
- Department of Transplant Immunology and Immunogenetics, All India Institute of Medical Sciences, New Delhi, India
| | - Seyed E. Hasnain
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi (IIT-D), New Delhi, India
- Department of Life Science, School of Basic Sciences and Research, Sharda University, Greater Noida, India
- *Correspondence: Seyed E. Hasnain, , , , Nasreen Z. Ehtesham, ,
| | - Nasreen Z. Ehtesham
- ICMR-National Institute of Pathology, Safdarjung Hospital Campus, New Delhi, India
- *Correspondence: Seyed E. Hasnain, , , , Nasreen Z. Ehtesham, ,
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44
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Niu L, Luo G, Liang R, Qiu C, Yang J, Xie L, Zhang K, Tian Y, Wang D, Song S, Takiff HE, Wong KW, Fan X, Gao Q, Yan B. Negative Regulator Nlrc3-like Maintain the Balanced Innate Immune Response During Mycobacterial Infection in Zebrafish. Front Immunol 2022; 13:893611. [PMID: 35693809 PMCID: PMC9174460 DOI: 10.3389/fimmu.2022.893611] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 04/25/2022] [Indexed: 01/02/2023] Open
Abstract
The NOD-like receptors (NLRs) have been shown to be involved in infection and autoinflammatory disease. Previously, we identified a zebrafish NLR, nlrc3-like, required for macrophage homeostasis in the brain under physiological conditions. Here, we found that a deficiency of nlrc3-like leads to decreased bacterial burden at a very early stage of Mycobacterium marinum infection, along with increased production of pro-inflammatory cytokines, such as il-1β and tnf-α. Interestingly, myeloid-lineage specific overexpression of nlrc3-like achieved the opposite effects, suggesting that the impact of nlrc3-like on the host anti-mycobacterial response is mainly due to its expression in the innate immune system. Fluorescence-activated cell sorting (FACS) and subsequent gene expression analysis demonstrated that inflammasome activation-related genes were upregulated in the infected macrophages of nlrc3-like deficient embryos. By disrupting asc, encoding apoptosis-associated speck-like protein containing a CARD, a key component for inflammasome activation, the bacterial burden increased in asc and nlrc3-like double deficient embryos compared with nlrc3-like single deficient embryos, implying the involvement of inflammasome activation in infection control. We also found extensive neutrophil infiltration in the nlrc3-like deficient larvae during infection, which was associated with comparable bacterial burden but increased tissue damage and death at a later stage that could be alleviated by administration of dexamethasone. Our findings uncovered an important role of nlrc3-like in the negative regulation of macrophage inflammasome activation and neutrophil infiltration during mycobacterial infection. This highlights the importance of a balanced innate immune response during mycobacterial infection and provides a potential molecular basis to explain how anti-inflammatory drugs can improve treatment outcomes in TB patients whose infection is accompanied by a hyperinflammatory response.
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Affiliation(s)
- Liangfei Niu
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Geyang Luo
- Shanghai Public Health Clinical Center, Key Laboratory of Medical Molecular Virology [Ministry of Education (MOE)/National Health Commission (NHC)/Chinese Academy of Medical Sciences (CAMS)], School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Rui Liang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Chenli Qiu
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Jianwei Yang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
- School of Medicine, Xizang Minzu University, Xianyang, China
| | - Lingling Xie
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Kaile Zhang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
- School of Life Sciences, Bengbu Medical College, Bengbu, China
| | - Yu Tian
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
- School of Life Sciences, Bengbu Medical College, Bengbu, China
| | - Decheng Wang
- Medical College, China Three Gorges University, Yichang, China
| | - Shu Song
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Howard E. Takiff
- Department of Tuberculosis Control and Prevention, Shenzhen Nanshan Centre for Chronic Disease Control, Shenzhen, China
- Laboratorio de Genética Molecular, CMBC, Instituto Venezolano de Investigaciones Cientificas, Caracas, Venezuela
| | - Ka-Wing Wong
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Xiaoyong Fan
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Qian Gao
- Shanghai Public Health Clinical Center, Key Laboratory of Medical Molecular Virology [Ministry of Education (MOE)/National Health Commission (NHC)/Chinese Academy of Medical Sciences (CAMS)], School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- *Correspondence: Bo Yan, ; Qian Gao,
| | - Bo Yan
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
- *Correspondence: Bo Yan, ; Qian Gao,
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45
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Wang J, Lu S, Zheng K, He Z, Li W, Liu J, Guo N, Xie Y, Chen D, Xu M, Wu Y. Treponema pallidum delays the apoptosis of human polymorphonuclear neutrophils through the intrinsic and extrinsic pathways. Mol Immunol 2022; 147:157-169. [PMID: 35597181 DOI: 10.1016/j.molimm.2022.04.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/26/2022] [Accepted: 04/21/2022] [Indexed: 11/26/2022]
Abstract
Treponema pallidum is a "stealth pathogen" responsible for infectious sexually transmitted diseases. Although neutrophils are usually present in skin lesions of early syphilis, the role of these cells in T. pallidum infection has barely been investigated. Neutrophils are short-lived cells that undergo constitutive apoptosis, and phagocytosis usually accelerates this process. Here, we demonstrated that human polymorphonuclear neutrophils (hPMNs) could phagocytose T. pallidum in vitro. An unexpected discovery was that T. pallidum inhibited hPMNs apoptosis markedly in an opsonin-independent manner. Furthermore, this phenomenon was not affected by bacterial viability, as detected by annexin V, morphology studies, and TUNEL staining. Exploration of the underlying mechanism showed that expression of the cleaved forms of caspase-3, -8, and -9 and effector caspase activity were diminished significantly in T. pallidum-infected hPMNs. T. pallidum also impaired staurosporine- and anti-Fas-induced signaling for neutrophil apoptosis. Of note, these effects were accompanied by inducing the autocrine production of the anti-apoptotic cytokine IL-8. Taken together, our data revealed that T. pallidum could inhibit the apoptosis of hPMNs through intrinsic and extrinsic pathways and provide new insights for understanding the pathogenicity mechanisms of T. pallidum.
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Affiliation(s)
- Jianye Wang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Simin Lu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Kang Zheng
- Clinical Laboratory, Hengyang Central Hospital, Hengyang, China
| | - Zhangping He
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Weiwei Li
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Jie Liu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Ningyuan Guo
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Yafeng Xie
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China; Department of Clinical Laboratory, the Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Dejun Chen
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Man Xu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China.
| | - Yimou Wu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China.
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46
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Ramon-Luing LA, Olvera Y, Flores-Gonzalez J, Palacios Y, Carranza C, Aguilar-Duran Y, Vargas MA, Gutierrez N, Medina-Quero K, Chavez-Galan L. Diverse Cell Death Mechanisms Are Simultaneously Activated in Macrophages Infected by Virulent Mycobacterium tuberculosis. Pathogens 2022; 11:pathogens11050492. [PMID: 35631013 PMCID: PMC9147088 DOI: 10.3390/pathogens11050492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/18/2022] [Accepted: 04/19/2022] [Indexed: 11/16/2022] Open
Abstract
Macrophages are necessary to eliminate pathogens. However, some pathogens have developed mechanisms to avoid the immune response. One of them is modulating the cell death mechanism to favor pathogen survival. In this study, we evaluated if virulent Mycobacterium tuberculosis (M. tb) can simultaneously activate more than one cell death mechanism. We infected human monocyte-derived macrophages (MDM) in vitro with avirulent (H37Ra) and virulent (H37Rv) strains, and then we measured molecules involved in apoptosis, necroptosis, and pyroptosis. Our data showed that H37Rv infection increased the BCL-2 transcript and protein, decreased the BAX transcript, and increased phosphorylated BCL-2 at the protein level. Moreover, H37Rv infection increased the expression of the molecules involved in the necroptotic pathway, such as ASK1, p-38, RIPK1, RIPK3, and caspase-8, while H37Ra increased caspase-8 and decreased RIPK3 at the transcriptional level. In addition, NLRP3 and CASP1 expression was increased at low MOI in both strains, while IL-1β was independent of virulence but dependent on infection MOI, suggesting the activation of pyroptosis. These findings suggest that virulent M. tb inhibits the apoptosis mediated by BCL-2 family molecules but, at the same time, increases the expression of molecules involved in apoptosis, necroptosis, and pyroptosis at the transcriptional and protein levels, probably as a mechanism to avoid the immune response and guarantee its survival.
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Affiliation(s)
- Lucero A. Ramon-Luing
- Laboratory of Integrative Immunology, Instituto Nacional de Enfermedades Respiratorias “Ismael Cosío Villegas”, Mexico City 14080, Mexico; (L.A.R.-L.); (J.F.-G.); (Y.P.); (Y.A.-D.)
| | - Yessica Olvera
- Research Department, Military School of Graduate of Health, SEDENA, Mexico City 11200, Mexico; (Y.O.); (M.A.V.); (N.G.); (K.M.-Q.)
| | - Julio Flores-Gonzalez
- Laboratory of Integrative Immunology, Instituto Nacional de Enfermedades Respiratorias “Ismael Cosío Villegas”, Mexico City 14080, Mexico; (L.A.R.-L.); (J.F.-G.); (Y.P.); (Y.A.-D.)
| | - Yadira Palacios
- Laboratory of Integrative Immunology, Instituto Nacional de Enfermedades Respiratorias “Ismael Cosío Villegas”, Mexico City 14080, Mexico; (L.A.R.-L.); (J.F.-G.); (Y.P.); (Y.A.-D.)
| | - Claudia Carranza
- Laboratory of Tuberculosis Immunobiology, Instituto Nacional de Enfermedades Respiratorias “Ismael Cosio Villegas”, Mexico City 14080, Mexico;
| | - Yerany Aguilar-Duran
- Laboratory of Integrative Immunology, Instituto Nacional de Enfermedades Respiratorias “Ismael Cosío Villegas”, Mexico City 14080, Mexico; (L.A.R.-L.); (J.F.-G.); (Y.P.); (Y.A.-D.)
| | - Marco Antonio Vargas
- Research Department, Military School of Graduate of Health, SEDENA, Mexico City 11200, Mexico; (Y.O.); (M.A.V.); (N.G.); (K.M.-Q.)
| | - Neptali Gutierrez
- Research Department, Military School of Graduate of Health, SEDENA, Mexico City 11200, Mexico; (Y.O.); (M.A.V.); (N.G.); (K.M.-Q.)
| | - Karen Medina-Quero
- Research Department, Military School of Graduate of Health, SEDENA, Mexico City 11200, Mexico; (Y.O.); (M.A.V.); (N.G.); (K.M.-Q.)
| | - Leslie Chavez-Galan
- Laboratory of Integrative Immunology, Instituto Nacional de Enfermedades Respiratorias “Ismael Cosío Villegas”, Mexico City 14080, Mexico; (L.A.R.-L.); (J.F.-G.); (Y.P.); (Y.A.-D.)
- Correspondence: or ; Tel.: +52-5554871700 (ext. 5270)
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Mycobacterium bovis PknG R242P Mutation Results in Structural Changes with Enhanced Virulence in the Mouse Model of Infection. Microorganisms 2022; 10:microorganisms10040673. [PMID: 35456728 PMCID: PMC9030157 DOI: 10.3390/microorganisms10040673] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 02/01/2023] Open
Abstract
Mycobacterium bovis is the causative agent of tuberculosis in domestic and wild animal species and sometimes in humans, presenting variable degrees of pathogenicity. It is known that PknG is involved in the first steps of Mycobacterium tuberculosis macrophage infection and immune evasion. We questioned whether M. bovispknG genes were conserved among mycobacteria and if natural genetic modifications would affect its virulence. We discovered a single mutation at a catalytic domain (R242P) of one M. bovis isolate and established the relation between the presence of R242P mutation and enhanced M. bovis virulence. Here, we demonstrated that R242P mutation alters the PknG protein conformation to a more open ATP binding site cleft. It was observed that M. bovis with PknG mutation resulted in increased growth under stress conditions. In addition, infected macrophages by M. bovis (R242P) presented a higher bacterial load compared with M. bovis without the pknG mutation. Furthermore, using the mouse model of infection, animals infected with M. bovis (R242P) had a massive innate immune response migration to the lung that culminated with pneumonia, necrosis, and higher mortality. The PknG protein single point mutation in its catalytic domain did not reduce the bacterial fitness but rather increased its virulence.
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Kondratieva E, Majorov K, Grigorov A, Skvortsova Y, Kondratieva T, Rubakova E, Linge I, Azhikina T, Apt A. An In Vivo Model of Separate M. tuberculosis Phagocytosis by Neutrophils and Macrophages: Gene Expression Profiles in the Parasite and Disease Development in the Mouse Host. Int J Mol Sci 2022; 23:ijms23062961. [PMID: 35328388 PMCID: PMC8954342 DOI: 10.3390/ijms23062961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/03/2022] [Accepted: 03/07/2022] [Indexed: 11/21/2022] Open
Abstract
The role of neutrophils in tuberculosis infection remains less well studied compared to that of the CD4+ T-lymphocytes and macrophages. Thus, alterations in Mycobacterium tuberculosis transcription profile following phagocytosis by neutrophils and how these shifts differ from those caused by macrophage phagocytosis remain unknown. We developed a mouse model that allows obtaining large amounts of either neutrophils or macrophages infected in vivo with M. tuberculosis for mycobacteria isolation in quantities sufficient for the whole genome RNA sequencing and aerosol challenge of mice. Here, we present: (i) the differences in transcription profiles of mycobacteria isolated from liquid cultures, neutrophils and macrophages infected in vivo; (ii) phenotypes of infection and lung inflammation (life span, colony forming units (CFU) counts in organs, lung pathology, immune cells infiltration and cytokine production) in genetically TB-susceptible mice identically infected via respiratory tract with neutrophil-passaged (NP), macrophage-passaged (MP) and conventionally prepared (CP) mycobacteria. Two-hour residence within neutrophils caused transcriptome shifts consistent with mycobacterial transition to dormancy and diminished their capacity to attract immune cells to infected lung tissue. Mycobacterial multiplication in organs did not depend upon pre-phagocytosis, whilst survival time of infected mice was shorter in the group infected with NP bacilli. We also discuss possible reasons for these phenotypic divergences.
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Affiliation(s)
- Elena Kondratieva
- Laboratory for Immunogenetics, Central Research TB Institute, 107564 Moscow, Russia; (E.K.); (K.M.); (T.K.); (E.R.); (I.L.)
| | - Konstantin Majorov
- Laboratory for Immunogenetics, Central Research TB Institute, 107564 Moscow, Russia; (E.K.); (K.M.); (T.K.); (E.R.); (I.L.)
| | - Artem Grigorov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (A.G.); (Y.S.); (T.A.)
| | - Yulia Skvortsova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (A.G.); (Y.S.); (T.A.)
| | - Tatiana Kondratieva
- Laboratory for Immunogenetics, Central Research TB Institute, 107564 Moscow, Russia; (E.K.); (K.M.); (T.K.); (E.R.); (I.L.)
| | - Elvira Rubakova
- Laboratory for Immunogenetics, Central Research TB Institute, 107564 Moscow, Russia; (E.K.); (K.M.); (T.K.); (E.R.); (I.L.)
| | - Irina Linge
- Laboratory for Immunogenetics, Central Research TB Institute, 107564 Moscow, Russia; (E.K.); (K.M.); (T.K.); (E.R.); (I.L.)
| | - Tatyana Azhikina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (A.G.); (Y.S.); (T.A.)
| | - Alexander Apt
- Laboratory for Immunogenetics, Central Research TB Institute, 107564 Moscow, Russia; (E.K.); (K.M.); (T.K.); (E.R.); (I.L.)
- Correspondence:
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Evaluation of Myeloperoxidase as Target for Host-Directed Therapy in Tuberculosis In Vivo. Int J Mol Sci 2022; 23:ijms23052554. [PMID: 35269694 PMCID: PMC8910451 DOI: 10.3390/ijms23052554] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/21/2022] [Accepted: 02/23/2022] [Indexed: 12/11/2022] Open
Abstract
Due to the rise of tuberculosis cases infected with multi and extensively drug-resistant Mycobacterium tuberculosis strains and the emergence of isolates resistant to antibiotics newly in clinical use, host-directed therapies targeting pathogenesis-associated immune pathways adjunct to antibiotics may ameliorate disease and bacterial clearance. Active tuberculosis is characterized by neutrophil-mediated lung pathology and tissue destruction. Previously, we showed that preventing M. tuberculosis induced necrosis in human neutrophils by inhibition of myeloperoxidase (MPO) promoted default apoptosis and subsequent control of mycobacteria by macrophages taking up the mycobacteria-infected neutrophils. To translate our findings in an in vivo model, we tested the MPO inhibitor 4-aminobenzoic acid hydrazide (ABAH) in C3HeB/FeJ mice, which are highly susceptible to M. tuberculosis infection manifesting in neutrophil-associated necrotic granulomas. MPO inhibition alone or as co-treatment with isoniazid, a first-line antibiotic in tuberculosis treatment, did not result in reduced bacterial burden, improved pathology, or altered infiltrating immune cell compositions. MPO inhibition failed to prevent M. tuberculosis induced neutrophil necrosis in C3Heb/FeJ mice in vivo as well as in murine neutrophils in vitro. In contrast to human neutrophils, murine neutrophils do not respond to M. tuberculosis infection in an MPO-dependent manner. Thus, the murine C3HeB/FeJ model does not fully resemble the pathomechanisms in active human tuberculosis. Consequently, murine infection models of tuberculosis are not necessarily adequate to evaluate host-directed therapies targeting neutrophils in vivo.
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50
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Poh XY, Loh FK, Friedland JS, Ong CWM. Neutrophil-Mediated Immunopathology and Matrix Metalloproteinases in Central Nervous System - Tuberculosis. Front Immunol 2022; 12:788976. [PMID: 35095865 PMCID: PMC8789671 DOI: 10.3389/fimmu.2021.788976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/20/2021] [Indexed: 12/19/2022] Open
Abstract
Tuberculosis (TB) remains one of the leading infectious killers in the world, infecting approximately a quarter of the world’s population with the causative organism Mycobacterium tuberculosis (M. tb). Central nervous system tuberculosis (CNS-TB) is the most severe form of TB, with high mortality and residual neurological sequelae even with effective TB treatment. In CNS-TB, recruited neutrophils infiltrate into the brain to carry out its antimicrobial functions of degranulation, phagocytosis and NETosis. However, neutrophils also mediate inflammation, tissue destruction and immunopathology in the CNS. Neutrophils release key mediators including matrix metalloproteinase (MMPs) which degrade brain extracellular matrix (ECM), tumor necrosis factor (TNF)-α which may drive inflammation, reactive oxygen species (ROS) that drive cellular necrosis and neutrophil extracellular traps (NETs), interacting with platelets to form thrombi that may lead to ischemic stroke. Host-directed therapies (HDTs) targeting these key mediators are potentially exciting, but currently remain of unproven effectiveness. This article reviews the key role of neutrophils and neutrophil-derived mediators in driving CNS-TB immunopathology.
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Affiliation(s)
- Xuan Ying Poh
- Infectious Diseases Translational Research Programme, Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Fei Kean Loh
- Infectious Diseases Translational Research Programme, Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jon S Friedland
- Institute for Infection and Immunity, St George's, University of London, London, United Kingdom
| | - Catherine W M Ong
- Infectious Diseases Translational Research Programme, Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Division of Infectious Diseases, Department of Medicine, National University Hospital, Singapore, Singapore.,Institute for Health Innovation and Technology (iHealthtech), National University of Singapore, Singapore, Singapore
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