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Vu A, Glassman I, Campbell G, Yeganyan S, Nguyen J, Shin A, Venketaraman V. Host Cell Death and Modulation of Immune Response against Mycobacterium tuberculosis Infection. Int J Mol Sci 2024; 25:6255. [PMID: 38892443 PMCID: PMC11172987 DOI: 10.3390/ijms25116255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 05/30/2024] [Accepted: 06/03/2024] [Indexed: 06/21/2024] Open
Abstract
Mycobacterium tuberculosis (Mtb) is the causative agent of tuberculosis (TB), a prevalent infectious disease affecting populations worldwide. A classic trait of TB pathology is the formation of granulomas, which wall off the pathogen, via the innate and adaptive immune systems. Some key players involved include tumor necrosis factor-alpha (TNF-α), foamy macrophages, type I interferons (IFNs), and reactive oxygen species, which may also show overlap with cell death pathways. Additionally, host cell death is a primary method for combating and controlling Mtb within the body, a process which is influenced by both host and bacterial factors. These cell death modalities have distinct molecular mechanisms and pathways. Programmed cell death (PCD), encompassing apoptosis and autophagy, typically confers a protective response against Mtb by containing the bacteria within dead macrophages, facilitating their phagocytosis by uninfected or neighboring cells, whereas necrotic cell death benefits the pathogen, leading to the release of bacteria extracellularly. Apoptosis is triggered via intrinsic and extrinsic caspase-dependent pathways as well as caspase-independent pathways. Necrosis is induced via various pathways, including necroptosis, pyroptosis, and ferroptosis. Given the pivotal role of host cell death pathways in host defense against Mtb, therapeutic agents targeting cell death signaling have been investigated for TB treatment. This review provides an overview of the diverse mechanisms underlying Mtb-induced host cell death, examining their implications for host immunity. Furthermore, it discusses the potential of targeting host cell death pathways as therapeutic and preventive strategies against Mtb infection.
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Affiliation(s)
| | | | | | | | | | | | - Vishwanath Venketaraman
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA (G.C.); (A.S.)
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2
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Corleis B, Bastian M, Hoffmann D, Beer M, Dorhoi A. Animal models for COVID-19 and tuberculosis. Front Immunol 2023; 14:1223260. [PMID: 37638020 PMCID: PMC10451089 DOI: 10.3389/fimmu.2023.1223260] [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: 05/15/2023] [Accepted: 07/21/2023] [Indexed: 08/29/2023] Open
Abstract
Respiratory infections cause tremendous morbidity and mortality worldwide. Amongst these diseases, tuberculosis (TB), a bacterial illness caused by Mycobacterium tuberculosis which often affects the lung, and coronavirus disease 2019 (COVID-19) caused by the Severe Acute Respiratory Syndrome Coronavirus type 2 (SARS-CoV-2), stand out as major drivers of epidemics of global concern. Despite their unrelated etiology and distinct pathology, these infections affect the same vital organ and share immunopathogenesis traits and an imperative demand to model the diseases at their various progression stages and localizations. Due to the clinical spectrum and heterogeneity of both diseases experimental infections were pursued in a variety of animal models. We summarize mammalian models employed in TB and COVID-19 experimental investigations, highlighting the diversity of rodent models and species peculiarities for each infection. We discuss the utility of non-human primates for translational research and emphasize on the benefits of non-conventional experimental models such as livestock. We epitomize advances facilitated by animal models with regard to understanding disease pathophysiology and immune responses. Finally, we highlight research areas necessitating optimized models and advocate that research of pulmonary infectious diseases could benefit from cross-fertilization between studies of apparently unrelated diseases, such as TB and COVID-19.
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Affiliation(s)
- Björn Corleis
- Institute of Immunology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Max Bastian
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Donata Hoffmann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Martin Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Anca Dorhoi
- Institute of Immunology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
- Faculty of Mathematics and Natural Sciences, University of Greifswald, Greifswald, Germany
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3
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Abstract
Mycobacteria are responsible for several human and animal diseases. NOD2 is a pattern recognition receptor that has an important role in mycobacterial recognition. However, the mechanisms by which mutations in NOD2 alter the course of mycobacterial infection remain unclear. Herein, we aimed to review the totality of studies directly addressing the relationship between NOD2 and mycobacteria as a foundation for moving the field forward. NOD2 was linked to mycobacterial infection at 3 levels: (1) genetic, through association with mycobacterial diseases of humans; (2) chemical, through the distinct NOD2 ligand in the mycobacterial cell wall; and (3) immunologic, through heightened NOD2 signaling caused by the unique modification of the NOD2 ligand. The immune response to mycobacteria is shaped by NOD2 signaling, responsible for NF-κB and MAPK activation, and the production of various immune effectors like cytokines and nitric oxide, with some evidence linking this to bacteriologic control. Absence of NOD2 during mycobacterial infection of mice can be detrimental, but the mechanism remains unknown. Conversely, the success of immunization with mycobacteria has been linked to NOD2 signaling and NOD2 has been targeted as an avenue of immunotherapy for diseases even beyond mycobacteria. The mycobacteria-NOD2 interaction remains an important area of study, which may shed light on immune mechanisms in disease.
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Affiliation(s)
- Jean-Yves Dubé
- Department of Microbiology and Immunology, McGill University, Montréal, Canada
| | - Marcel A Behr
- Department of Medicine, McGill University Health Centre, Montréal, Canada
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Chen P, Zhou Y, Li X, Yang J, Zheng Z, Zou Y, Li X, Liao J, Dai J, Xu Y, Yin L, Chen G, Gu J, Ouyang Q, Cho WJ, Tang Q, Liang G. Design, Synthesis, and Bioevaluation of Novel MyD88 Inhibitor c17 against Acute Lung Injury Derived from the Virtual Screen. J Med Chem 2023; 66:6938-6958. [PMID: 37130331 DOI: 10.1021/acs.jmedchem.3c00359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Myeloid differentiation primary response protein 88 (MyD88) is crucial to immune cascades mediated by Toll-like receptors (TLRs) and interleukin-1 receptors (IL-1Rs). MyD88 dysregulation has been linked to a wide variety of inflammatory diseases, making it a promising new target for anti-inflammatory and cancer therapy development. In this study, 46 compounds were designed and synthesized inspired by virtual screen hit. The anti-inflammatory activity of designed compounds was evaluated biologically, and c17 was discovered to have a high binding affinity with MyD88. It inhibited the interaction of TLR4 and MyD88 and suppressed the NF-κB pathway. In addition, c17 treatment led to the accumulation in the lungs of rats and attenuated LPS-induced ALI mice model. Furthermore, c17 showed negligible toxicity in vivo. Together, these findings suggest that c17 may serve as a potential therapeutical method for the treatment of ALI and as a lead structure for the continued development of MyD88 inhibitors.
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Affiliation(s)
- Pan Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou 310053, China
- College of Pharmacy, Chonnam National University, Gwangju 61186, Korea
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Ying Zhou
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Xiaobo Li
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Jun Yang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Zhiwei Zheng
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- College of Pharmacy, Chonnam National University, Gwangju 61186, Korea
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Yu Zou
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Xiang Li
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Jing Liao
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Jintian Dai
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Yuye Xu
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Lina Yin
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou 310053, China
| | - Gaozhi Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Jing Gu
- Department of Medicinal Chemistry, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Qin Ouyang
- Department of Medicinal Chemistry, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Won-Jea Cho
- College of Pharmacy, Chonnam National University, Gwangju 61186, Korea
| | - Qidong Tang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou 310053, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
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5
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Zhang H, Zhang S, Dang X, Lin L, Ren L, Song R. GPNMB plays an active role in the M1/M2 balance. Tissue Cell 2021; 74:101683. [PMID: 34800878 DOI: 10.1016/j.tice.2021.101683] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 11/14/2021] [Accepted: 11/14/2021] [Indexed: 12/20/2022]
Abstract
The phenotypic function of macrophages varies with the local microenvironment. Macrophages play an important role in the development of periodontitis. As one of the sources of GPNMB protein, the phenotype of macrophages is affected by GPNMB expression. In this study, activated macrophages were evaluated by flow cytometry, RT-qPCR and WB, and M2a macrophages had higher GPNMB expression than M0 and M1 macrophages. On this basis, a macrophage model with overexpression of GPNMB was established, and it was observed that GPNMB overexpression promoted the secretion of anti-inflammatory factors by macrophages and inhibited the secretion of pro-inflammatory factors by M1 macrophages.
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Affiliation(s)
- Hengfang Zhang
- First Affiliated Hospital of Harbin Medical University, College of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin, 150001, China
| | - Shuang Zhang
- Office of International Exchange and Cooperation, Harbin Medical University, No. 157 Baojian Street, Nangang District, Harbin, 150081, China
| | - Xuan Dang
- First Affiliated Hospital of Harbin Medical University, College of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin, 150001, China
| | - Lexun Lin
- Department of Pathogenic Microbiology, School of Basic Medical Sciences, Harbin Medical University, No. 157 Baojian Street, Nangang District, Harbin, 150081, China
| | - Liping Ren
- First Affiliated Hospital of Harbin Medical University, College of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin, 150001, China
| | - Rong Song
- First Affiliated Hospital of Harbin Medical University, College of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin, 150001, China.
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6
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Foster M, Hill PC, Setiabudiawan TP, Koeken VACM, Alisjahbana B, van Crevel R. BCG-induced protection against Mycobacterium tuberculosis infection: Evidence, mechanisms, and implications for next-generation vaccines. Immunol Rev 2021; 301:122-144. [PMID: 33709421 PMCID: PMC8252066 DOI: 10.1111/imr.12965] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 02/12/2021] [Accepted: 02/13/2021] [Indexed: 12/20/2022]
Abstract
The tuberculosis (TB) vaccine Bacillus Calmette-Guérin (BCG) was introduced 100 years ago, but as it provides insufficient protection against TB disease, especially in adults, new vaccines are being developed and evaluated. The discovery that BCG protects humans from becoming infected with Mycobacterium tuberculosis (Mtb) and not just from progressing to TB disease provides justification for considering Mtb infection as an endpoint in vaccine trials. Such trials would require fewer participants than those with disease as an endpoint. In this review, we first define Mtb infection and disease phenotypes that can be used for mechanistic studies and/or endpoints for vaccine trials. Secondly, we review the evidence for BCG-induced protection against Mtb infection from observational and BCG re-vaccination studies, and discuss limitations and variation of this protection. Thirdly, we review possible underlying mechanisms for BCG efficacy against Mtb infection, including alternative T cell responses, antibody-mediated protection, and innate immune mechanisms, with a specific focus on BCG-induced trained immunity, which involves epigenetic and metabolic reprogramming of innate immune cells. Finally, we discuss the implications for further studies of BCG efficacy against Mtb infection, including for mechanistic research, and their relevance to the design and evaluation of new TB vaccines.
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Affiliation(s)
- Mitchell Foster
- Department of Microbiology and ImmunologyUniversity of OtagoDunedinNew Zealand
| | - Philip C. Hill
- Centre for International HealthUniversity of OtagoDunedinNew Zealand
| | - Todia Pediatama Setiabudiawan
- Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI)Radboud University Medical CenterNijmegenThe Netherlands
| | - Valerie A. C. M. Koeken
- Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI)Radboud University Medical CenterNijmegenThe Netherlands
- Department of Computational Biology for Individualised Infection MedicineCentre for Individualised Infection Medicine (CiiM) & TWINCOREJoint Ventures between The Helmholtz‐Centre for Infection Research (HZI) and The Hannover Medical School (MHH)HannoverGermany
| | - Bachti Alisjahbana
- Tuberculosis Working GroupFaculty of MedicineUniversitas PadjadjaranBandungIndonesia
| | - Reinout van Crevel
- Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI)Radboud University Medical CenterNijmegenThe Netherlands
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7
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Kilinç G, Saris A, Ottenhoff THM, Haks MC. Host-directed therapy to combat mycobacterial infections. Immunol Rev 2021; 301:62-83. [PMID: 33565103 PMCID: PMC8248113 DOI: 10.1111/imr.12951] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 12/27/2020] [Indexed: 12/27/2022]
Abstract
Upon infection, mycobacteria, such as Mycobacterium tuberculosis (Mtb) and nontuberculous mycobacteria (NTM), are recognized by host innate immune cells, triggering a series of intracellular processes that promote mycobacterial killing. Mycobacteria, however, have developed multiple counter‐strategies to persist and survive inside host cells. By manipulating host effector mechanisms, including phagosome maturation, vacuolar escape, autophagy, antigen presentation, and metabolic pathways, pathogenic mycobacteria are able to establish long‐lasting infection. Counteracting these mycobacteria‐induced host modifying mechanisms can be accomplished by host‐directed therapeutic (HDT) strategies. HDTs offer several major advantages compared to conventional antibiotics: (a) HDTs can be effective against both drug‐resistant and drug‐susceptible bacteria, as well as potentially dormant mycobacteria; (b) HDTs are less likely to induce bacterial drug resistance; and (c) HDTs could synergize with, or shorten antibiotic treatment by targeting different pathways. In this review, we will explore host‐pathogen interactions that have been identified for Mtb for which potential HDTs impacting both innate and adaptive immunity are available, and outline those worthy of future research. We will also discuss possibilities to target NTM infection by HDT, although current knowledge regarding host‐pathogen interactions for NTM is limited compared to Mtb. Finally, we speculate that combinatorial HDT strategies can potentially synergize to achieve optimal mycobacterial host immune control.
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Affiliation(s)
- Gül Kilinç
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Anno Saris
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Tom H M Ottenhoff
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Mariëlle C Haks
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
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8
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Ma J, Zhao S, Gao X, Wang R, Liu J, Zhou X, Zhou Y. The Roles of Inflammasomes in Host Defense against Mycobacterium tuberculosis. Pathogens 2021; 10:pathogens10020120. [PMID: 33503864 PMCID: PMC7911501 DOI: 10.3390/pathogens10020120] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/16/2021] [Accepted: 01/21/2021] [Indexed: 12/14/2022] Open
Abstract
Mycobacterium tuberculosis (MTB) infection is characterized by granulomatous lung lesions and systemic inflammatory responses during active disease. Inflammasome activation is involved in regulation of inflammation. Inflammasomes are multiprotein complexes serving a platform for activation of caspase-1, which cleaves the proinflammatory cytokines such as interleukin-1β (IL-1β) and IL-18 into their active forms. These cytokines play an essential role in MTB control. MTB infection triggers activation of the nucleotide-binding domain, leucine-rich-repeat containing family, pyrin domain-containing 3 (NLRP3) and absent in melanoma 2 (AIM2) inflammasomes in vitro, but only AIM2 and apoptosis-associated speck-like protein containing a caspase-activation recruitment domain (ASC), rather than NLRP3 or caspase-1, favor host survival and restriction of mycobacterial replication in vivo. Interferons (IFNs) inhibits MTB-induced inflammasome activation and IL-1 signaling. In this review, we focus on activation and regulation of the NLRP3 and AIM2 inflammasomes after exposure to MTB, as well as the effect of inflammasome activation on host defense against the infection.
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Affiliation(s)
- Jialu Ma
- College of Veterinary Medicine, Southwest University, Chongqing 402460, China; (J.M.); (S.Z.); (X.G.); (R.W.); (J.L.)
| | - Shasha Zhao
- College of Veterinary Medicine, Southwest University, Chongqing 402460, China; (J.M.); (S.Z.); (X.G.); (R.W.); (J.L.)
| | - Xiao Gao
- College of Veterinary Medicine, Southwest University, Chongqing 402460, China; (J.M.); (S.Z.); (X.G.); (R.W.); (J.L.)
| | - Rui Wang
- College of Veterinary Medicine, Southwest University, Chongqing 402460, China; (J.M.); (S.Z.); (X.G.); (R.W.); (J.L.)
| | - Juan Liu
- College of Veterinary Medicine, Southwest University, Chongqing 402460, China; (J.M.); (S.Z.); (X.G.); (R.W.); (J.L.)
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing 402460, China
| | - Xiangmei Zhou
- State Key Laboratories for Agrobiotechnology, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China;
| | - Yang Zhou
- College of Veterinary Medicine, Southwest University, Chongqing 402460, China; (J.M.); (S.Z.); (X.G.); (R.W.); (J.L.)
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing 402460, China
- Correspondence:
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9
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Nicotine Modulates MyD88-Dependent Signaling Pathway in Macrophages during Mycobacterial Infection. Microorganisms 2020; 8:microorganisms8111804. [PMID: 33212859 PMCID: PMC7698335 DOI: 10.3390/microorganisms8111804] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/03/2020] [Accepted: 11/13/2020] [Indexed: 12/11/2022] Open
Abstract
Recently, we reported that cigarette smoking, and especially nicotine, increases susceptibility to mycobacterial infection and exacerbates inflammation in patients with Crohn’s disease (CD). The macrophagic response to Mycobacterium avium subspecies paratuberculosis (MAP) in CD and Mycobacteria tuberculosis (MTB) continues to be under investigation. The role of toll-like-receptors (TLRs) and cytoplasmic adaptor protein (MyD88) in proinflammatory response during Mycobacterial infection has been suggested. However, the mechanism of how nicotine modulates macrophage response during infection in CD and exacerbates inflammatory response remain unclear. In this study, we elucidated the mechanistic role of nicotine in modulating MyD88-dependent/TLR pathway signaling in a macrophage system during mycobacterial infection. The data demonstrated that MAP infection in THP-1 derived macrophages was mediated through TLR2 and MyD88 leading to increase in IL-8 in expression and production. On the other hand, LPS-representing, Gram-negative bacteria mediated macrophage response through TLR4. Blocking TLR2 and TLR4 with antagonists voided the effect of MAP, and LPS, respectively in macrophages and reversed response with decrease in expression of iNOS, TNF-α and IL-8. Interestingly, nicotine in infected macrophages significantly (1) downregulated TLR2 and TLR4 expression, (2) activated MyD88, (3) increased M1/M2 ratio, and (4) increased expression and secretion of proinflammatory cytokines especially IL-8, as seen in CD smokers. We also discovered that blocking macrophages during MAP infection with MyD88 antagonist significantly decreased response which illustrates the key role for MyD88 during infection. Surprisingly, dual treatment of MAP-infected macrophages with MyD88 antagonist and nicotine absolutely impaired immune response and decreased MAP viability, which clearly validate the inflammatory role of nicotine in macrophages through TLR2/MyD88 pathway during infection. This is the first report to describe the mechanism by which nicotine modulates TLR2/MyDD88 and exacerbates inflammation in CD smokers associated with infection.
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Prasla Z, Sutliff RL, Sadikot RT. Macrophage Signaling Pathways in Pulmonary Nontuberculous Mycobacteria Infections. Am J Respir Cell Mol Biol 2020; 63:144-151. [PMID: 32160017 DOI: 10.1165/rcmb.2019-0241tr] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The incidence and prevalence of nontuberculous mycobacteria (NTM) lung disease is rising worldwide and accounts for most clinical cases of NTM disease. NTM infections occur in both immunocompetent and immunocompromised hosts. Macrophages are the primary host cells that initiate an immune response to NTM. Defining the molecular events that govern the control of infection within macrophages is fundamental to understanding the pathogenesis of NTM disease. Here, we review key macrophage host signaling pathways that contribute to the host immune response to pulmonary NTM infections. In this review, we focus primarily on NTM that are known to cause lung disease, including Mycobacterium avium intracellulare, M. abscessus, and M. kansasii.
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Affiliation(s)
- Zohra Prasla
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia; and.,Atlanta Veterans Affairs Health Care System, Decatur, Georgia
| | - Roy L Sutliff
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia; and.,Atlanta Veterans Affairs Health Care System, Decatur, Georgia
| | - Ruxana T Sadikot
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia; and.,Atlanta Veterans Affairs Health Care System, Decatur, Georgia
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11
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Chai Q, Wang L, Liu CH, Ge B. New insights into the evasion of host innate immunity by Mycobacterium tuberculosis. Cell Mol Immunol 2020; 17:901-913. [PMID: 32728204 PMCID: PMC7608469 DOI: 10.1038/s41423-020-0502-z] [Citation(s) in RCA: 134] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 06/22/2020] [Indexed: 12/26/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) is an extremely successful intracellular pathogen that causes tuberculosis (TB), which remains the leading infectious cause of human death. The early interactions between Mtb and the host innate immune system largely determine the establishment of TB infection and disease development. Upon infection, host cells detect Mtb through a set of innate immune receptors and launch a range of cellular innate immune events. However, these innate defense mechanisms are extensively modulated by Mtb to avoid host immune clearance. In this review, we describe the emerging role of cytosolic nucleic acid-sensing pathways at the host-Mtb interface and summarize recently revealed mechanisms by which Mtb circumvents host cellular innate immune strategies such as membrane trafficking and integrity, cell death and autophagy. In addition, we discuss the newly elucidated strategies by which Mtb manipulates the host molecular regulatory machinery of innate immunity, including the intranuclear regulatory machinery, the ubiquitin system, and cellular intrinsic immune components. A better understanding of innate immune evasion mechanisms adopted by Mtb will provide new insights into TB pathogenesis and contribute to the development of more effective TB vaccines and therapies.
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Affiliation(s)
- Qiyao Chai
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, 100101, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Lin Wang
- Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 200433, Shanghai, China
| | - Cui Hua Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, 100101, Beijing, China. .,Savaid Medical School, University of Chinese Academy of Sciences, 101408, Beijing, China.
| | - Baoxue Ge
- Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 200433, Shanghai, China.
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12
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Troy A, Esparza-Gonzalez SC, Bartek A, Creissen E, Izzo L, Izzo AA. Pulmonary mucosal immunity mediated through CpG provides adequate protection against pulmonary Mycobacterium tuberculosis infection in the mouse model. A role for type I interferon. Tuberculosis (Edinb) 2020; 123:101949. [PMID: 32741537 DOI: 10.1016/j.tube.2020.101949] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 05/08/2020] [Accepted: 05/10/2020] [Indexed: 12/28/2022]
Abstract
Toll-Like Receptor (TLR) 9 stimulation is required for induction of potent immune responses against pathogen invasion. The use of unmethylated CpG as adjuvants in vaccines provides an excellent means of stimulating adaptive immunity. Our data demonstrate that CpG-C provided prolonged immune responses in the mouse model of tuberculosis when formulated with liposomes and the Mycobacterium tuberculosis antigen ESAT-6. A reduction in the mycobacterial burden was best achieved when administered as an intranasal vaccine and was dependent on type I interferon (IFN). There was a significant difference between CpG-C inoculated wild type and IFN-αR1-/- mice, indicating that type I IFN plays a role in the immune response following CpG-C inoculation. Further analysis showed that early NK cell presence was not an absolute requirement, although elevated IFN-γ levels were detected in the lungs of mice within 48 h. The reduction in mycobacterial burden was MyD88-independent as CpG-C inoculated MyD88-/- mice showed comparable mycobacterial burdens to wild type mice with no detriment due to the lack of MyD88. Together our data show that pulmonary stimulation of TLR9 bearing antigen presenting cells resulted in the induction of protective immunity against M. tuberculosis infection that was dependent on type I IFN signaling.
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Affiliation(s)
- Amber Troy
- Colorado State University, Department of Microbiology, Immunology, and Pathology, Fort Collins, CO, USA
| | - Sandra C Esparza-Gonzalez
- Colorado State University, Department of Microbiology, Immunology, and Pathology, Fort Collins, CO, USA
| | - Alicia Bartek
- Colorado State University, Department of Microbiology, Immunology, and Pathology, Fort Collins, CO, USA
| | - Elizabeth Creissen
- Colorado State University, Department of Microbiology, Immunology, and Pathology, Fort Collins, CO, USA
| | - Linda Izzo
- Colorado State University, Department of Microbiology, Immunology, and Pathology, Fort Collins, CO, USA
| | - Angelo A Izzo
- Colorado State University, Department of Microbiology, Immunology, and Pathology, Fort Collins, CO, USA.
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Eom YW, Akter R, Li W, Lee S, Hwang S, Kim J, Cho MY. M1 Macrophages Promote TRAIL Expression in Adipose Tissue-Derived Stem Cells, Which Suppresses Colitis-Associated Colon Cancer by Increasing Apoptosis of CD133 + Cancer Stem Cells and Decreasing M2 Macrophage Population. Int J Mol Sci 2020; 21:ijms21113887. [PMID: 32485960 PMCID: PMC7312348 DOI: 10.3390/ijms21113887] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/22/2020] [Accepted: 05/28/2020] [Indexed: 12/12/2022] Open
Abstract
We have previously reported that adipose tissue-derived stem cells (ASCs) cultured at high cell density can induce cancer cell death through the expression of type I interferons and tumor necrosis factor (TNF)-related apoptosis-inducing ligands (TRAIL). Here, we investigated whether TRAIL-expressing ASCs induced by M1 macrophages can alleviate colitis-associated cancer in an azoxymethane (AOM)/dextran sodium sulfate (DSS) animal model. M1 macrophages significantly increased the TRAIL expression in ASCs, which induced the apoptosis of LoVo cells in a TRAIL-dependent manner. However, CD133knockout LoVo cells, generated using the CRISPR-Cas9 gene-editing system, were resistant to TRAIL. In the AOM/DSS-induced colitis-associated cancer model, the intraperitoneal transplantation of TRAIL-expressing ASCs significantly suppressed colon cancer development. Moreover, immunohistochemical staining revealed a low CD133 expression in tumors from the AOM/DSS + ASCs group when compared with tumors from the untreated group. Additionally, the ASC treatment selectively reduced the number of M2 macrophages in tumoral (45.7 ± 4.2) and non-tumoral mucosa (30.3 ± 1.5) in AOM/DSS + ASCs-treated animals relative to those in the untreated group (tumor 71.7 ± 11.2, non-tumor 94.3 ± 12.5; p < 0.001). Thus, TRAIL-expressing ASCs are promising agents for anti-tumor therapy, particularly to alleviate colon cancer by inducing the apoptosis of CD133+ cancer stem cells and decreasing the M2 macrophage population.
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Affiliation(s)
- Young Woo Eom
- Cell Therapy and Tissue Engineering Center, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do 26426, Korea; (Y.W.E.); (S.H.)
- Regeneration Medicine Research Center, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do 26426, Korea
| | - Rokeya Akter
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do 26426, Korea; (R.A.); (W.L.); (S.L.)
| | - Wanlu Li
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do 26426, Korea; (R.A.); (W.L.); (S.L.)
| | - Suji Lee
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do 26426, Korea; (R.A.); (W.L.); (S.L.)
| | - Soonjae Hwang
- Cell Therapy and Tissue Engineering Center, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do 26426, Korea; (Y.W.E.); (S.H.)
| | - Jiye Kim
- Department of Plastic and Reconstructive Surgery, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do 26426, Korea;
| | - Mee-Yon Cho
- Regeneration Medicine Research Center, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do 26426, Korea
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do 26426, Korea; (R.A.); (W.L.); (S.L.)
- Correspondence: ; Tel.: +82-33-731-1553
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14
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Chai Q, Lu Z, Liu CH. Host defense mechanisms against Mycobacterium tuberculosis. Cell Mol Life Sci 2020; 77:1859-1878. [PMID: 31720742 PMCID: PMC11104961 DOI: 10.1007/s00018-019-03353-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/30/2019] [Accepted: 10/21/2019] [Indexed: 12/19/2022]
Abstract
Tuberculosis (TB), which is caused by Mycobacterium tuberculosis (Mtb), remains the leading cause of death worldwide from a single infectious pathogen. Mtb is a paradigmatic intracellular pathogen that primarily invades the lungs after host inhalation of bacteria-containing droplets via the airway. However, the majority of Mtb-exposed individuals can spontaneously control the infection by virtue of a robust immune defense system. The mucosal barriers of the respiratory tract shape the first-line defense against Mtb through various mucosal immune responses. After arriving at the alveoli, the surviving mycobacteria further encounter a set of host innate immune cells that exert multiple cellular bactericidal functions. Adaptive immunity, predominantly mediated by a range of different T cell and B cell subsets, is subsequently activated and participates in host anti-mycobacterial defense. During Mtb infection, host bactericidal immune responses are exquisitely adjusted and balanced by multifaceted mechanisms, including genetic and epigenetic regulation, metabolic regulation and neuroendocrine regulation, which are indispensable for maintaining host immune efficiency and avoiding excessive tissue injury. A better understanding of the integrated and equilibrated host immune defense system against Mtb will contribute to the development of rational TB treatment regimens especially novel host-directed therapeutics.
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Affiliation(s)
- Qiyao Chai
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Zhe Lu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Cui Hua Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071, China.
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, China.
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Abstract
Tuberculosis (TB) is a serious global public health challenge that results in significant morbidity and mortality worldwide. TB is caused by infection with the bacilli Mycobacterium tuberculosis (M. tuberculosis), which has evolved a wide variety of strategies in order to thrive within its host. Understanding the complex interactions between M. tuberculosis and host immunity can inform the rational design of better TB vaccines and therapeutics. This chapter covers innate and adaptive immunity against M. tuberculosis infection, including insights on bacterial immune evasion and subversion garnered from animal models of infection and human studies. In addition, this chapter discusses the immunology of the TB granuloma, TB diagnostics, and TB comorbidities. Finally, this chapter provides a broad overview of the current TB vaccine pipeline.
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16
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Li B, Wan Z, Wang Z, Zuo J, Xu Y, Han X, Phouthapane V, Miao J. TLR2 Signaling Pathway Combats Streptococcus uberis Infection by Inducing Mitochondrial Reactive Oxygen Species Production. Cells 2020; 9:cells9020494. [PMID: 32098158 PMCID: PMC7072855 DOI: 10.3390/cells9020494] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/09/2020] [Accepted: 02/19/2020] [Indexed: 12/24/2022] Open
Abstract
Mastitis caused by Streptococcus uberis (S. uberis) is a common and difficult-to-cure clinical disease in dairy cows. In this study, the role of Toll-like receptors (TLRs) and TLR-mediated signaling pathways in mastitis caused by S. uberis was investigated using mouse models and mammary epithelial cells (MECs). We used S. uberis to infect mammary glands of wild type, TLR2−/− and TLR4−/− mice and quantified the adaptor molecules in TLR signaling pathways, proinflammatory cytokines, tissue damage, and bacterial count. When compared with TLR4 deficiency, TLR2 deficiency induced more severe pathological changes through myeloid differentiation primary response 88 (MyD88)-mediated signaling pathways during S. uberis infection. In MECs, TLR2 detected S. uberis infection and induced mitochondrial reactive oxygen species (mROS) to assist host in controlling the secretion of inflammatory factors and the elimination of intracellular S. uberis. Our results demonstrated that TLR2-mediated mROS has a significant effect on S. uberis-induced host defense responses in mammary glands as well as in MECs.
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Affiliation(s)
- Bin Li
- MOE Joint International Research Laboratory of Animal Health and Food Safty, Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (Z.W.); (Z.W.); (J.Z.); (Y.X.)
| | - Zhixin Wan
- MOE Joint International Research Laboratory of Animal Health and Food Safty, Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (Z.W.); (Z.W.); (J.Z.); (Y.X.)
| | - Zhenglei Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safty, Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (Z.W.); (Z.W.); (J.Z.); (Y.X.)
| | - Jiakun Zuo
- MOE Joint International Research Laboratory of Animal Health and Food Safty, Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (Z.W.); (Z.W.); (J.Z.); (Y.X.)
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China;
| | - Yuanyuan Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safty, Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (Z.W.); (Z.W.); (J.Z.); (Y.X.)
| | - Xiangan Han
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China;
| | - Vanhnaseng Phouthapane
- Biotechnology and Ecology Institute, Ministry of Science and Technology (MOST), Vientiane 22797, Lao PDR;
| | - Jinfeng Miao
- MOE Joint International Research Laboratory of Animal Health and Food Safty, Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (Z.W.); (Z.W.); (J.Z.); (Y.X.)
- Correspondence: ; Fax: +86-25-8439-8669
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17
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Patankar YR, Sutiwisesak R, Boyce S, Lai R, Lindestam Arlehamn CS, Sette A, Behar SM. Limited recognition of Mycobacterium tuberculosis-infected macrophages by polyclonal CD4 and CD8 T cells from the lungs of infected mice. Mucosal Immunol 2020; 13:140-148. [PMID: 31636345 PMCID: PMC7161428 DOI: 10.1038/s41385-019-0217-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/23/2019] [Accepted: 09/28/2019] [Indexed: 02/04/2023]
Abstract
Immune responses following Mycobacterium tuberculosis (Mtb) infection or vaccination are frequently assessed by measuring T-cell recognition of crude Mtb antigens, recombinant proteins, or peptide epitopes. We previously showed that not all Mtb-specific T cells recognize Mtb-infected macrophages. Thus, an important question is what proportion of T cells elicited by Mtb infection recognize Mtb-infected macrophages. We address this question by developing a modified elispot assay using viable Mtb-infected macrophages, a low multiplicity of infection and purified T cells. In C57BL/6 mice, CD4 and CD8 T cells were classically MHC restricted. Comparable frequencies of T cells that recognize Mtb-infected macrophages were determined using interferon-γ elispot and intracellular cytokine staining, and lung CD4 T cells more sensitively recognized Mtb-infected macrophages than lung CD8 T cells. Compared to the relatively high frequencies of T cells specific for antigens such as ESAT-6 and TB10.4, low frequencies of total pulmonary T cells elicited by aerosolized Mtb infection recognize Mtb-infected macrophages. Finally, we demonstrate that BCG vaccination elicits T cells that recognize Mtb-infected macrophages. We propose that the frequency of T cells that recognize infected macrophages could correlate with protective immunity and may be an alternative approach to measuring T-cell responses to Mtb antigens.
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Affiliation(s)
- Yash R. Patankar
- 0000 0001 0742 0364grid.168645.8Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655 USA
| | - Rujapak Sutiwisesak
- 0000 0001 0742 0364grid.168645.8Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655 USA
| | - Shayla Boyce
- 0000 0001 0742 0364grid.168645.8Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655 USA
| | - Rocky Lai
- 0000 0001 0742 0364grid.168645.8Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655 USA
| | - Cecilia S. Lindestam Arlehamn
- 0000 0004 0461 3162grid.185006.aDepartment of Vaccine Discovery, La Jolla Institute for Immunology, La Jolla, CA 92037 USA
| | - Alessandro Sette
- 0000 0004 0461 3162grid.185006.aDepartment of Vaccine Discovery, La Jolla Institute for Immunology, La Jolla, CA 92037 USA ,0000 0001 2107 4242grid.266100.3Department of Medicine, University of California San Diego, La Jolla, CA 92093 USA
| | - Samuel M. Behar
- 0000 0001 0742 0364grid.168645.8Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655 USA
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18
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Sepehri Z, Kiani Z, Kohan F, Ghavami S. Toll-Like Receptor 4 as an Immune Receptor Against Mycobacterium tuberculosis: A Systematic Review. Lab Med 2019; 50:117-129. [PMID: 30124945 DOI: 10.1093/labmed/lmy047] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVE To review the main Mycobacterium tuberculosis (Mtb) pathogen-associated molecular patterns (PAMPs) and the roles played by toll-like receptor (TLR)4 in determination of Mtb infection outcome. METHODS Several scientific databases, including Scopus, PubMed, and Google Scholar, were used for searching appropriate research articles from the literature for information on our topic. RESULTS TLR4 plays positive roles in induction of immune responses against Mtb and participates in eradication of the infection. Some limited investigations approved the roles of TLR4 in induction of apoptosis in macrophages during tuberculosis (TB) and attenuation of immune responses in some situations. CONCLUSIONS TB outcome appears to be dependent on TLR4/Mtb interaction and several factors, including bacterial load and immune or nonimmune cells, as hosts. Also, other TLR/Mtb interactions can affect TLR4 responses.
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Affiliation(s)
- Zahra Sepehri
- Department of Internal Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Zohre Kiani
- Zabol Medicinal Plant Research Center, Zabol University of Medical Sciences, Zabol, Iran and Kerman University of Medical Sciences, Kerman, Iran
| | - Farhad Kohan
- Zabol University of Medical Sciences, Zabol, Iran
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Sciences, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
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19
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Cervantes JL, Oak E, Garcia J, Liu H, Lorenzini PA, Batra D, Chhabra A, Salazar JC, Roca X. Vitamin D modulates human macrophage response to Mycobacterium tuberculosis DNA. Tuberculosis (Edinb) 2019; 116S:S131-S137. [PMID: 31085128 PMCID: PMC6626683 DOI: 10.1016/j.tube.2019.04.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 11/01/2018] [Indexed: 12/12/2022]
Abstract
Mycobacterium tuberculosis (Mtb) is a facultative intracellular pathogen that infects macrophages where it avoids elimination by interfering with host defense mechanisms, including phago-lysosome fusion. Endosomal Toll-like receptors (TLRs) generate Type I Interferons (IFNs), which are associated with active tuberculosis (TB). We aimed to explore if DNA from different Mtb lineages lead to differences in the inflammatory response of human monocytic/macrophage cells. THP-1 cells which express two inducible reporter constructs for interferons (IFNs) as well as for NF-κB, were stimulated via endosomal delivery of Mtb DNA as a nanocomplex with PEI. DNA from different Mtb phylogenetic lineages elicited differential inflammatory responses in human macrophages. An initial relatively weak IRF-mediated response to DNA from HN878 and H37Rv increased if the cells were pre-treated with Vitamin D (Vit D) for 72 h. RNAseq of THP-1 under different transformation conditions showed that pre-treatment with Vit D upregulated several TLR9 variants, as well as genes involved in inflammatory immune response to infection, immune cell activation, Type I IFN regulation, and regulation of inflammation. Vit D appears to be important in increasing low IRF responses to DNA from certain lineages of Mtb. Variations in the IRF-mediated response to DNA derived from different Mtb genotypes are potentially important in the pathogenesis of tuberculosis since Type I IFN responses are associated with active disease. The role of Vit D in these responses could also translate into future therapeutic approaches.
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Affiliation(s)
- Jorge L Cervantes
- Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, TX, USA.
| | - Esther Oak
- University of New England, College of Dental Medicine, Portland, ME, USA
| | - John Garcia
- University of Connecticut Health, School of Public Health, Farmington, CT, USA
| | - Hongfei Liu
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Paolo A Lorenzini
- School of Biological Sciences, Nanyang Technological University, Singapore; Nanyang Institute of Technology in Health and Medicine, Interdisciplinary Graduate School, Nanyang Technological University, Singapore
| | - Deepika Batra
- Stem Cell Institute, Amity University Haryana, Manesar, Gurugram, Haryana, India
| | - Arvind Chhabra
- Stem Cell Institute, Amity University Haryana, Manesar, Gurugram, Haryana, India
| | - Juan C Salazar
- University of Connecticut Health, Department of Pediatrics, Farmington, CT, USA; Connecticut Children's Medical Center, Hartford, CT, USA
| | - Xavier Roca
- School of Biological Sciences, Nanyang Technological University, Singapore
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20
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Jin C, Wu X, Dong C, Li F, Fan L, Xiong S, Dong Y. EspR promotes mycobacteria survival in macrophages by inhibiting MyD88 mediated inflammation and apoptosis. Tuberculosis (Edinb) 2019; 116:22-31. [PMID: 31153514 DOI: 10.1016/j.tube.2019.03.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 02/18/2019] [Accepted: 03/30/2019] [Indexed: 12/22/2022]
Abstract
Tuberculosis is an infectious disease caused by Mycobacterium tuberculosis (Mtb), leading to about a million deaths each year. EspR is a DNA binding protein of Mtb which regulates expression of multiple genes and the activity of ESX-1 secretion system of the bacteria, with itself being secreted out as a substrate of ESX-1. We explored the function of secreted EspR in host cells by overexpressing the protein in murine macrophage cell line RAW264.7, infecting the cells with BCG which does not secrete EspR, and evaluating the antimicrobial responses of the cells. We found that EspR resulted in an increased intracellular bacteria load in macrophages. This is due to its inhibition on BCG induced expression of inflammatory cytokines and inducible nitric oxide synthase (iNOS), as well as host cell apoptosis. Mechanism study showed that EspR directly interacted with adaptor protein myeloid differentiation factor 88 (MyD88), suppressed MyD88 dependent Toll-like receptor (TLR) and IL-1R signal activation, thus reduced inflammatory responses and apoptosis in macrophages and promoted mycobacteria survival.
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Affiliation(s)
- Chunyan Jin
- Jiangsu Key Laboratory of Infection and Immunity, Institute of Biology and Medical Sciences, Soochow University, Postal address: 199 Renai Road, SIP, Suzhou, Jiangsu, China.
| | - Xiaoyu Wu
- Jiangsu Key Laboratory of Infection and Immunity, Institute of Biology and Medical Sciences, Soochow University, Postal address: 199 Renai Road, SIP, Suzhou, Jiangsu, China.
| | - Chunsheng Dong
- Jiangsu Key Laboratory of Infection and Immunity, Institute of Biology and Medical Sciences, Soochow University, Postal address: 199 Renai Road, SIP, Suzhou, Jiangsu, China.
| | - Fengge Li
- Jiangsu Key Laboratory of Infection and Immunity, Institute of Biology and Medical Sciences, Soochow University, Postal address: 199 Renai Road, SIP, Suzhou, Jiangsu, China.
| | - Lingbo Fan
- Jiangsu Key Laboratory of Infection and Immunity, Institute of Biology and Medical Sciences, Soochow University, Postal address: 199 Renai Road, SIP, Suzhou, Jiangsu, China.
| | - Sidong Xiong
- Jiangsu Key Laboratory of Infection and Immunity, Institute of Biology and Medical Sciences, Soochow University, Postal address: 199 Renai Road, SIP, Suzhou, Jiangsu, China.
| | - Yuanshu Dong
- Jiangsu Key Laboratory of Infection and Immunity, Institute of Biology and Medical Sciences, Soochow University, Postal address: 199 Renai Road, SIP, Suzhou, Jiangsu, China.
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21
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Kumar P, Bhaskar S. Myeloid differentiation primary response protein 88 (MyD88)-deficient dendritic cells exhibit a skewed cytokine response to BCG. BMC Res Notes 2019; 12:52. [PMID: 30674337 PMCID: PMC6343232 DOI: 10.1186/s13104-019-4086-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 01/14/2019] [Indexed: 11/29/2022] Open
Abstract
Objective Macrophages and dendritic cells (DCs) play key role in the recognition of mycobacterial infection and mounting of antimycobacterial immunity. In case of macrophages, recognition of BCG and other mycobacteria has been attributed predominantly to MyD88-dependent singling. Interestingly, in previous study with bone marrow-derived DCs, we have shown that BCG promotes the survival of wild-type and MyD88−/− cells to the comparable levels. In the present study, we further examined MyD88−/− DC’s response to BCG. Results Bone marrow-derived DCs from wild-type and MyD88−/− mice were stimulated with BCG and analyzed for cytokine secretion. As expected, BCG-stimulated wild-type DCs produced significant amount of TNF-α and IL-12p40 in response to BCG. Interestingly, BCG-stimulated MyD88−/− DCs were also found to secret significantly higher levels of TNF-α and IL-12p40, compared with unstimulated DCs. We further observed that wild-type DCs produced significant level of immunosuppressive cytokine IL-10 in response to BCG, whereas MyD88−/− DCs secreted very low amount of IL-10 when stimulated with BCG. These findings demonstrated that MyD88−/− DCs exhibit a skewed cytokine response to BCG.
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Affiliation(s)
- Pawan Kumar
- Dept. of Preventive Oncology, Dr. B.R Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India.,PDC-I, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Sangeeta Bhaskar
- PDC-I, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India.
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22
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Chen L, Chen H, Chen P, Zhang W, Wu C, Sun C, Luo W, Zheng L, Liu Z, Liang G. Development of 2-amino-4-phenylthiazole analogues to disrupt myeloid differentiation factor 88 and prevent inflammatory responses in acute lung injury. Eur J Med Chem 2019; 161:22-38. [DOI: 10.1016/j.ejmech.2018.09.068] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 09/11/2018] [Accepted: 09/26/2018] [Indexed: 11/16/2022]
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23
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Cohen SB, Gern BH, Delahaye JL, Adams KN, Plumlee CR, Winkler JK, Sherman DR, Gerner MY, Urdahl KB. Alveolar Macrophages Provide an Early Mycobacterium tuberculosis Niche and Initiate Dissemination. Cell Host Microbe 2018; 24:439-446.e4. [PMID: 30146391 DOI: 10.1016/j.chom.2018.08.001] [Citation(s) in RCA: 299] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 05/03/2018] [Accepted: 07/18/2018] [Indexed: 01/15/2023]
Abstract
Mycobacterium tuberculosis (Mtb) infection is initiated in the distal airways, but the bacteria ultimately disseminate to the lung interstitium. Although various cell types, including alveolar macrophages (AM), neutrophils, and permissive monocytes, are known to be infected with Mtb, the initially infected cells as well as those that mediate dissemination from the alveoli to the lung interstitium are unknown. In this study, using a murine infection model, we reveal that early, productive Mtb infection occurs almost exclusively within airway-resident AM. Thereafter Mtb-infected, but not uninfected, AM localize to the lung interstitium through mechanisms requiring an intact Mtb ESX-1 secretion system. Relocalization of infected AM precedes Mtb uptake by recruited monocyte-derived macrophages and neutrophils. This dissemination process is driven by non-hematopoietic host MyD88/interleukin-1 receptor inflammasome signaling. Thus, interleukin-1-mediated crosstalk between Mtb-infected AM and non-hematopoietic cells promotes pulmonary Mtb infection by enabling infected cells to disseminate from the alveoli to the lung interstitium.
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Affiliation(s)
- Sara B Cohen
- Center for Infectious Disease Research, 307 Westlake Avenue North, Suite #500, Seattle, WA 98109, USA
| | - Benjamin H Gern
- Center for Infectious Disease Research, 307 Westlake Avenue North, Suite #500, Seattle, WA 98109, USA; Department of Pediatrics, Division of Infectious Diseases, University of Washington School of Medicine and Seattle Children's Hospital, Seattle, WA 98195, USA
| | - Jared L Delahaye
- Center for Infectious Disease Research, 307 Westlake Avenue North, Suite #500, Seattle, WA 98109, USA; Department of Immunology, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Kristin N Adams
- Center for Infectious Disease Research, 307 Westlake Avenue North, Suite #500, Seattle, WA 98109, USA
| | - Courtney R Plumlee
- Center for Infectious Disease Research, 307 Westlake Avenue North, Suite #500, Seattle, WA 98109, USA
| | - Jessica K Winkler
- Center for Infectious Disease Research, 307 Westlake Avenue North, Suite #500, Seattle, WA 98109, USA
| | - David R Sherman
- Center for Infectious Disease Research, 307 Westlake Avenue North, Suite #500, Seattle, WA 98109, USA; Department of Global Health, University of Washington, Seattle, WA 98195, USA
| | - Michael Y Gerner
- Department of Immunology, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Kevin B Urdahl
- Center for Infectious Disease Research, 307 Westlake Avenue North, Suite #500, Seattle, WA 98109, USA; Department of Pediatrics, Division of Infectious Diseases, University of Washington School of Medicine and Seattle Children's Hospital, Seattle, WA 98195, USA; Department of Immunology, University of Washington School of Medicine, Seattle, WA 98109, USA.
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24
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Kumar P, John V, Gupta A, Bhaskar S. Enhanced survival of BCG-stimulated dendritic cells: involvement of anti-apoptotic proteins and NF-κB. Biol Open 2018; 7:bio.032045. [PMID: 29848490 PMCID: PMC6031337 DOI: 10.1242/bio.032045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
BCG (Bacillus Calmette-Guérin) is the only available vaccine against TB and is also used for the treatment of superficial bladder cancer. BCG-mediated protection against TB and bladder cancer has been shown to rely on its ability to induce superior CD4+ and CD8+ T cell responses. As the magnitude of T cell responses is defined by dendritic cell (DC) lifespan, we examined the effect of BCG on DC survival and its underlying mechanisms. It was observed that BCG stimulation enhanced DC survival and prolonged DC lifespan in a dose-dependent manner. Live BCG led to a higher DC survival compared with heat-killed BCG. FITC-Annexin V staining showed that BCG promoted DC survival by inhibiting apoptosis. Consistently, higher expressions of anti-apoptotic proteins Bcl-2 and Bcl-xL were observed in BCG-stimulated DCs. Pharmacological inhibition of Bcl-2 and Bcl-xL drastically reduced the DC survival efficacy of BCG. Comparable survival of BCG-stimulated wild-type and MyD88−/− DCs suggested that MyD88 signaling is dispensable for BCG-induced DC survival. NF-κB is one of the key regulators of innate immune responses. We observed that pharmacological inhibition of NF-κB abrogated BCG-mediated increase in DC survival and expression of anti-apoptotic proteins. These findings provide a novel insight into the effect of BCG on DC physiology. Summary: BCG enhanced the survival of dendritic cells (DCs) and prolonged their lifespan. BCG promoted DC survival by up-regulating Bcl-2 and Bcl-xL. Increased survival of BCG-stimulated DCs was dependent on NF-κB, but was independent of MyD88 signaling.
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Affiliation(s)
- Pawan Kumar
- Product Development Cell-I, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Vini John
- Product Development Cell-I, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Ananya Gupta
- Product Development Cell-I, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Sangeeta Bhaskar
- Product Development Cell-I, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
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25
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Di Padova F, Quesniaux VFJ, Ryffel B. MyD88 as a therapeutic target for inflammatory lung diseases. Expert Opin Ther Targets 2018; 22:401-408. [PMID: 29658361 DOI: 10.1080/14728222.2018.1464139] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Myeloid differentiation primary response protein 88 (MyD88) is a critical adaptor protein involved in Toll-like and IL-1 receptor family signaling controlling innate immune responses and inflammation. Genetic deletion of MyD88 function results in profound suppression of inflammation and reduced resistance of the host to pathogens indicating non-redundant roles of MyD88. The TIR domain is critical for MyD88 dimerization and signaling for TLR and IL-1R family receptor. Areas covered: Emerging evidence suggests that chemical disruption of the TIR domain attenuates cell activation and inhibits in vivo MyD88-dependent inflammation. We review the development of MyD88 dimerization disruptors as a novel therapeutic approach of respiratory diseases with a focus on COPD. Expert opinion: There is a proof of concept that therapeutic targeting of MyD88 is feasible and first preclinical data are highly promising. This opens a great opportunity to treat exacerbations of COPD and other chronic respiratory diseases. However, extensive preclinical investigations and risk analyses are required with carefully evaluation of reduced host resistance and opportunistic infections.
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Affiliation(s)
| | - Valerie F J Quesniaux
- b Laboratory of experimental and molecular immunology and neurogenetics (INEM) , UMR 7355 CNRS-University of Orleans , Orleans , France
| | - Bernhard Ryffel
- b Laboratory of experimental and molecular immunology and neurogenetics (INEM) , UMR 7355 CNRS-University of Orleans , Orleans , France.,c IDM, Institute of Infectious Disease and Molecular Medicine , University of Cape Town , Cape Town , RSA
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26
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Liang S, Song Z, Wu Y, Gao Y, Gao M, Liu F, Wang F, Zhang Y. MicroRNA-27b Modulates Inflammatory Response and Apoptosis during Mycobacterium tuberculosis Infection. THE JOURNAL OF IMMUNOLOGY 2018; 200:3506-3518. [PMID: 29661829 DOI: 10.4049/jimmunol.1701448] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 03/13/2018] [Indexed: 12/29/2022]
Abstract
Mycobacterium tuberculosis poses a significant global health threat. MicroRNAs play an important role in regulating host anti-mycobacterial defense; however, their role in apoptosis-mediated mycobacterial elimination and inflammatory response remains unclear. In this study, we explored the role of microRNA-27b (miR-27b) in murine macrophage responses to M. tuberculosis infection. We uncovered that the TLR-2/MyD88/NF-κB signaling pathway induced the expression of miR-27b and miR-27b suppressed the production of proinflammatory factors and the activity of NF-κB, thereby avoiding an excessive inflammation during M. tuberculosis infection. Luciferase reporter assay and Western blotting showed that miR-27b directly targeted Bcl-2-associated athanogene 2 (Bag2) in macrophages. Overexpression of Bag2 reversed miR-27b-mediated inhibition of the production of proinflammatory factors. In addition, miR-27b increased p53-dependent cell apoptosis and the production of reactive oxygen species and decreased the bacterial burden. We also showed that Bag2 interacts with p53 and negatively regulates its activity, thereby controlling cell apoptosis and facilitating bacterial survival. In summary, we revealed a novel role of the miR-27b/Bag2 axis in the regulation of inflammatory response and apoptosis and provide a potential molecular host defense mechanism against mycobacteria.
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Affiliation(s)
- Shuxin Liang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China; and
| | - Zhigang Song
- Department of Pathogen Diagnosis and Biosafety, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Yongyan Wu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China; and
| | - Yuanpeng Gao
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China; and
| | - Mingqing Gao
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China; and
| | - Fayang Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China; and
| | - Fengyu Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China; and
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China; .,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China; and
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27
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Zhang J, Zhao Z, Zhong H, Wu L, Zhou W, Peng W, Hu X, Song J, Liu T, Wu Q, Bai H, Zhou Y, Chen X, Chen J, Lu X, Ying B. Importance of common TLR2 genetic variants on clinical phenotypes and risk in tuberculosis disease in a Western Chinese population. INFECTION GENETICS AND EVOLUTION 2018; 60:173-180. [PMID: 29486365 DOI: 10.1016/j.meegid.2018.02.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 02/05/2023]
Abstract
OBJECTIVES Abundant studies have suggested that TLR2 genetic variants involve in susceptibility to TB infection. We tried to verified the hypothesis that TLR2 genetic loci effect on the susceptibility to TB in the Western Chinese population. METHODS A total 1109 individuals (634 TB patients and 475 healthy controls) were genotyped for rs3804099, rs3804100 and rs76112010 by using a custom-by-design 2x48-Plex SNP scan TM Kit. The statistical analysis between candidate 3 SNPs and risk and phenotypes of TB were conducted in this study. Significant SNPs were further interrogated in relation to TB susceptibility to TB infection and clinical phenotypes. RESULTS None of the three genetic loci (rs3804099, rs3804100 and rs76112010) showed statistically significant differences between all TB cases and healthy controls in genotype, allele frequencies and genetic models (all p > 0.05). Statistical comparisons of retreatment TB cases and healthy controls or primary cases revealed that rs3804099 was significantly associated with the increased risk of developing TB in Western Chinese population. For genotypes frequencies, the subgroups of retreatment TB group versus healthy control group analysis and retreatment TB group versus primary TB group analysis results showed the p = 0.041 and p = 0.002 respectively. For recessive model, the subgroup of retreatment TB group versus healthy control group and retreatment TB group versus primary TB group analyses showed the p = 0.028 and P = 0.002 after Bonferroni correction respectively. Furthermore, analysis of the genotypes of rs76112010 in relation to clinical phenotypes of active TB using the dominant model demonstrated that it was strongly correlated with different hematological parameters (Erythrocyte P = 0.043, Hemoglobin P = 0.047, Hematocrit P = 0.027). CONCLUSION Our study presented the significant associations of rs3804099 with TB susceptibility in the retreatment TB subgroup analysis. Our study proposed that common TLR2 genetic variants may influence TB development and disease phenotypes in Western Chinese population.
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Affiliation(s)
- Jingwei Zhang
- Department of Laboratory Medicine, Chengdu Second People's Hospital, Chengdu 610017, PR China
| | - Zhenzhen Zhao
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Huiyu Zhong
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Lijuan Wu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Wenjing Zhou
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Wu Peng
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Xuejiao Hu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Jiajia Song
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Tangyuheng Liu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Qian Wu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Hao Bai
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Yi Zhou
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Xuerong Chen
- Division of Pulmonary Disease, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Jie Chen
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Xiaojun Lu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Binwu Ying
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China.
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28
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Ferraris DM, Miggiano R, Rossi F, Rizzi M. Mycobacterium tuberculosis Molecular Determinants of Infection, Survival Strategies, and Vulnerable Targets. Pathogens 2018; 7:E17. [PMID: 29389854 PMCID: PMC5874743 DOI: 10.3390/pathogens7010017] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 01/26/2018] [Accepted: 01/28/2018] [Indexed: 12/13/2022] Open
Abstract
Mycobacterium tuberculosis is the causative agent of tuberculosis, an ancient disease which, still today, represents a major threat for the world population. Despite the advances in medicine and the development of effective antitubercular drugs, the cure of tuberculosis involves prolonged therapies which complicate the compliance and monitoring of drug administration and treatment. Moreover, the only available antitubercular vaccine fails to provide an effective shield against adult lung tuberculosis, which is the most prevalent form. Hence, there is a pressing need for effective antitubercular drugs and vaccines. This review highlights recent advances in the study of selected M. tuberculosis key molecular determinants of infection and vulnerable targets whose structures could be exploited for the development of new antitubercular agents.
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Affiliation(s)
- Davide M Ferraris
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "A. Avogadro", Largo Donegani 2, 28100 Novara, Italy.
| | - Riccardo Miggiano
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "A. Avogadro", Largo Donegani 2, 28100 Novara, Italy.
| | - Franca Rossi
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "A. Avogadro", Largo Donegani 2, 28100 Novara, Italy.
| | - Menico Rizzi
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "A. Avogadro", Largo Donegani 2, 28100 Novara, Italy.
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29
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Lang R, Schick J. Review: Impact of Helminth Infection on Antimycobacterial Immunity-A Focus on the Macrophage. Front Immunol 2017; 8:1864. [PMID: 29312343 PMCID: PMC5743664 DOI: 10.3389/fimmu.2017.01864] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 12/08/2017] [Indexed: 12/16/2022] Open
Abstract
Successful immune control of Mycobacterium tuberculosis (MTB) requires robust CD4+ T cell responses, with IFNγs as the key cytokine promoting killing of intracellular mycobacteria by macrophages. By contrast, helminth infections typically direct the immune system toward a type 2 response, characterized by high levels of the cytokines IL-4 and IL-10, which can antagonize IFNγ production and its biological effects. In many countries with high burden of tuberculosis, helminth infections are endemic and have been associated with increased risk to develop tuberculosis or to inhibit vaccination-induced immunity. Mechanistically, regulation of the antimycobacterial immune response by helminths has been mostly been attributed to the T cell compartment. Here, we review the current status of the literature on the impact of helminths on vaccine-induced and natural immunity to MTB with a focus on the alterations enforced on the capacity of macrophages to function as sensors of mycobacteria and effector cells to control their replication.
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Affiliation(s)
- Roland Lang
- Institute of Clinical Microbiology, Immunology and Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Judith Schick
- Institute of Clinical Microbiology, Immunology and Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
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30
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Cheng AC, Yang KY, Chen NJ, Hsu TL, Jou R, Hsieh SL, Tseng PH. CLEC9A modulates macrophage-mediated neutrophil recruitment in response to heat-killed Mycobacterium tuberculosis H37Ra. PLoS One 2017; 12:e0186780. [PMID: 29065139 PMCID: PMC5655532 DOI: 10.1371/journal.pone.0186780] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 10/06/2017] [Indexed: 12/15/2022] Open
Abstract
Tuberculosis is a fatal human infectious disease caused by Mycobacterium tuberculosis (M. tuberculosis) that is prevalent worldwide. Mycobacteria differ from other bacteria in that they have a cell wall composed of specific surface glycans that are the major determinant of these organisms' pathogenicity. The interaction of M. tuberculosis with pattern recognition receptors (PRRs), in particular C-type lectin receptors (CLRs), on the surface of macrophages plays a central role in initiating innate and adaptive immunity, but the picture as a whole remains a puzzle. Defining novel mechanisms by which host receptors interact with pathogens in order to modulate a specific immune response is an area of intense research. In this study, based on an in vitro lectin binding assay, CLEC9A (DNGR-1) is identified as a novel CLR that binds with mycobacteria. Our results with CLEC9A-knocked down cells and a CLEC9A-Fc fusion protein as blocking agents show that CLEC9A is involved in the activation of SYK and MAPK signaling in response to heat-killed M. tuberculosis H37Ra treatment, and it then promotes the production of CXCL8 and IL-1β in macrophages. The CXCL8 and IL-1β secreted by the activated macrophages are critical to neutrophil recruitment and activation. In a in vivo mouse model, when the interaction between CLEC9A and H37Ra is interfered with by treatment with CLEC9A-Fc fusion protein, this reduces lung inflammation and cell infiltration. These findings demonstrate that CLEC9A is a specialized receptor that modulates the innate immune response when there is a mycobacterial infection.
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Affiliation(s)
- An-Chieh Cheng
- Institute of Biochemistry and Molecular Biology, School of Life Science, National Yang-Ming University, Taipei, Taiwan
| | - Kuang-Yao Yang
- Institute of Emergency and Critical Care Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Infection and Immunity Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Nien-Jung Chen
- Infection and Immunity Research Center, National Yang-Ming University, Taipei, Taiwan
- Institute of Microbiology and Immunology, School of Life Science, National Yang-Ming University, Taipei, Taiwan
| | - Tsui-Ling Hsu
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Ruwen Jou
- Institute of Microbiology and Immunology, School of Life Science, National Yang-Ming University, Taipei, Taiwan
- Taiwan Centers for Disease Control, Taipei, Taiwan
| | | | - Ping-Hui Tseng
- Institute of Biochemistry and Molecular Biology, School of Life Science, National Yang-Ming University, Taipei, Taiwan
- Infection and Immunity Research Center, National Yang-Ming University, Taipei, Taiwan
- * E-mail:
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31
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Oldenburg R, Demangel C. Pathogenic and immunosuppressive properties of mycobacterial phenolic glycolipids. Biochimie 2017; 141:3-8. [DOI: 10.1016/j.biochi.2017.03.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 03/15/2017] [Indexed: 01/29/2023]
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32
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Shaping the niche in macrophages: Genetic diversity of the M. tuberculosis complex and its consequences for the infected host. Int J Med Microbiol 2017; 308:118-128. [PMID: 28969988 DOI: 10.1016/j.ijmm.2017.09.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 09/09/2017] [Accepted: 09/11/2017] [Indexed: 12/12/2022] Open
Abstract
Pathogenic mycobacteria of the Mycobacterium tuberculosis complex (MTBC) have co-evolved with their individual hosts and are able to transform the hostile environment of the macrophage into a permissive cellular habitat. The impact of MTBC genetic variability has long been considered largely unimportant in TB pathogenesis. Members of the MTBC can now be distinguished into three major phylogenetic groups consisting of 7 phylogenetic lineages and more than 30 so called sub-lineages/subgroups. MTBC genetic diversity indeed influences the transmissibility and virulence of clinical MTBC isolates as well as the immune response and the clinical outcome. Here we review the genetic diversity and epidemiology of MTBC strains and describe the current knowledge about the host immune response to infection with MTBC clinical isolates using human and murine experimental model systems in vivo and in vitro. We discuss the role of innate cytokines in detail and portray two in our group recently developed approaches to characterize the intracellular niches of MTBC strains. Characterizing the niches and deciphering the strategies of MTBC strains to transform an antibacterial effector cell into a permissive cellular habitat offers the opportunity to identify strain- and lineage-specific key factors which may represent targets for novel antimicrobial or host directed therapies for tuberculosis.
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33
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Faridgohar M, Nikoueinejad H. New findings of Toll-like receptors involved in Mycobacterium tuberculosis infection. Pathog Glob Health 2017; 111:256-264. [PMID: 28715935 DOI: 10.1080/20477724.2017.1351080] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Tuberculosis (TB), an important issue in the present age, affects millions of people each year. The infectious agent of TB, Mycobacterium tuberculosis (Mtb), interacts with the immune system which prevents the development of this bacterium as much as possible. In fact, the receptors on the surface of immune cells identify the bacteria, one of which is Toll-like receptors (TLRs). Different TLRs including 2, 4, 9 and 8 play critical roles in tuberculosis infection. In this paper, we focused on the role of TLRs which interact with different components of Mtb and, consequently, prevent the entrance and influence of bacteria on the body.
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Affiliation(s)
- Majid Faridgohar
- a Molecular Biology Research Center , Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Hassan Nikoueinejad
- b Nephrology and Urology Research Center , Baqiyatallah University of Medical Sciences , Tehran , Iran
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Abstract
Tuberculosis remains one of the greatest threats to human health. The causative bacterium, Mycobacterium tuberculosis, is acquired by the respiratory route. It is exquisitely adapted to humans and is a prototypic intracellular pathogen of macrophages, with alveolar macrophages being the primary conduit of infection and disease. However, M. tuberculosis bacilli interact with and are affected by several soluble and cellular components of the innate immune system which dictate the outcome of primary infection, most commonly a latently infected healthy human host, in whom the bacteria are held in check by the host immune response within the confines of tissue granuloma, the host histopathologic hallmark. Such individuals can develop active TB later in life with impairment in the immune system. In contrast, in a minority of infected individuals, the early host immune response fails to control bacterial growth, and progressive granulomatous disease develops, facilitating spread of the bacilli via infectious aerosols. The molecular details of the M. tuberculosis-host innate immune system interaction continue to be elucidated, particularly those occurring within the lung. However, it is clear that a number of complex processes are involved at the different stages of infection that may benefit either the bacterium or the host. In this article, we describe a contemporary view of the molecular events underlying the interaction between M. tuberculosis and a variety of cellular and soluble components and processes of the innate immune system.
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35
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Mishra A, Akhtar S, Jagannath C, Khan A. Pattern recognition receptors and coordinated cellular pathways involved in tuberculosis immunopathogenesis: Emerging concepts and perspectives. Mol Immunol 2017; 87:240-248. [PMID: 28514713 DOI: 10.1016/j.molimm.2017.05.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 04/28/2017] [Accepted: 05/01/2017] [Indexed: 01/04/2023]
Abstract
Pattern Recognition Receptors (PRRs) play a central role in the recognition of numerous pathogens, including Mycobacterium tuberculosis, resulting in activation of innate and adaptive immune responses. Besides Toll Like Receptors, C-type Lectin Receptors and Nod Like Receptors are now being recognized for their involvement in inducing immune response against M. tuberculosis infection. Although, a functional redundancy of the PRRs has also been reported in many studies, emerging evidences support the notion that a cooperative and coordinated response generated by these receptors is critical to sustain the full immune control of M. tuberculosis infection. Many of the PRRs are now found to be involved in various cellular host defenses, such as inflammasome activation, phagosome biogenesis, endosomal trafficking, and antigen processing pathways that are all very critical for an effective immune response against M. tuberculosis. In support, polymorphism in several of these receptors has also been found associated with increased susceptibility to tuberculosis in humans. Nonetheless, increasing evidences also show that in order to enhance its intracellular survival, M. tuberculosis has also evolved multiple strategies to subvert and reprogram PPR-mediated immune responses. In light of these findings, this review analyzes the interaction of bacterial and host factors at the intersections of PRR signaling pathways that could provide integrative insights for the development of better vaccines and therapeutics for tuberculosis.
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Affiliation(s)
- Abhishek Mishra
- Department of Biotechnology, Goa University, Taleigao Plateau, Goa, 403206, India
| | - Shamim Akhtar
- Department of Microbiology, Dr. D.Y. Patil College of Arts Commerce and Science, Saint Tukaram Nagar, Pimpri, Pune, 411018, India
| | - Chinnaswamy Jagannath
- Department of Pathology and Laboratory Medicine, McGovern Medical School, University of Texas Health Sciences Center-Houston, Houston, TX, 77030, USA
| | - Arshad Khan
- Department of Pathology and Laboratory Medicine, McGovern Medical School, University of Texas Health Sciences Center-Houston, Houston, TX, 77030, USA.
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36
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MyD88 in Mycobacterium tuberculosis infection. Med Microbiol Immunol 2017; 206:187-193. [PMID: 28220253 DOI: 10.1007/s00430-017-0495-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 01/27/2017] [Indexed: 01/15/2023]
Abstract
MyD88 adaptor protein mediates numerous biologically important signal transduction pathways in innate immunity. MyD88 signaling fosters bacterial containment and is necessary to raise an adequate innate and acquired immune response to Mycobacterium tuberculosis (Mtb). The phagosome is a crucial cellular location not only for Mtb replication, but it is also where components of the Myddosome and inflammasome are recruited. Besides its function as a TLR-adaptor protein, MyD88 may help stabilizing cytosolic receptors that are recruited to the phagosome. MyD88 plays a critical role not only in the generation of an inflammatory response, but also in inducing regulatory signals to prevent excessive inflammation and cellular damage in the lung.
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37
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Ishikawa E, Mori D, Yamasaki S. Recognition of Mycobacterial Lipids by Immune Receptors. Trends Immunol 2017; 38:66-76. [DOI: 10.1016/j.it.2016.10.009] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 10/24/2016] [Accepted: 10/28/2016] [Indexed: 01/03/2023]
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38
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Segueni N, Tritto E, Bourigault ML, Rose S, Erard F, Le Bert M, Jacobs M, Di Padova F, Stiehl DP, Moulin P, Brees D, Chibout SD, Ryffel B, Kammüller M, Quesniaux VF. Controlled Mycobacterium tuberculosis infection in mice under treatment with anti-IL-17A or IL-17F antibodies, in contrast to TNFα neutralization. Sci Rep 2016; 6:36923. [PMID: 27853279 PMCID: PMC5113257 DOI: 10.1038/srep36923] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 10/21/2016] [Indexed: 12/20/2022] Open
Abstract
Antibodies targeting IL-17A or its receptor IL-17RA show unprecedented efficacy in the treatment of autoimmune diseases such as psoriasis. These therapies, by neutralizing critical mediators of immunity, may increase susceptibility to infections. Here, we compared the effect of antibodies neutralizing IL-17A, IL-17F or TNFα on murine host responses to Mycobacterium tuberculosis infection by evaluating lung transcriptomic, microbiological and histological analyses. Coinciding with a significant increase of mycobacterial burden and pathological changes following TNFα blockade, gene array analyses of infected lungs revealed major changes of inflammatory and immune gene expression signatures 4 weeks post-infection. Specifically, gene expression associated with host-pathogen interactions, macrophage recruitment, activation and polarization, host-antimycobacterial activities, immunomodulatory responses, as well as extracellular matrix metallopeptidases, were markedly modulated by TNFα blockade. IL-17A or IL-17F neutralization elicited only mild changes of few genes without impaired host resistance four weeks after M. tuberculosis infection. Further, the absence of both IL-17RA and IL-22 pathways in genetically deficient mice did not profoundly compromise host control of M. tuberculosis over a 6-months period, ruling out potential compensation between these two pathways, while TNFα-deficient mice succumbed rapidly. These data provide experimental confirmation of the low clinical risk of mycobacterial infection under anti-IL-17A therapy, in contrast to anti-TNFα treatment.
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Affiliation(s)
- Noria Segueni
- CNRS, UMR7355, Orleans, France
- University of Orleans, INEM, Experimental and Molecular Immunology and Neurogenetics, Orleans, France
| | - Elaine Tritto
- Novartis Institutes for Biomedical Research, CH-4002, Basel, Switzerland
| | - Marie-Laure Bourigault
- CNRS, UMR7355, Orleans, France
- University of Orleans, INEM, Experimental and Molecular Immunology and Neurogenetics, Orleans, France
| | - Stéphanie Rose
- CNRS, UMR7355, Orleans, France
- University of Orleans, INEM, Experimental and Molecular Immunology and Neurogenetics, Orleans, France
| | - François Erard
- CNRS, UMR7355, Orleans, France
- University of Orleans, INEM, Experimental and Molecular Immunology and Neurogenetics, Orleans, France
| | - Marc Le Bert
- CNRS, UMR7355, Orleans, France
- University of Orleans, INEM, Experimental and Molecular Immunology and Neurogenetics, Orleans, France
| | - Muazzam Jacobs
- Division of Immunology, Institute of Infectious Disease and Molecular Medicine, Health Sciences Faculty, University of Cape Town, South Africa
- National Health Laboratory Service, Cape Town, South Africa
| | - Franco Di Padova
- Novartis Institutes for Biomedical Research, CH-4002, Basel, Switzerland
| | - Daniel P. Stiehl
- Novartis Institutes for Biomedical Research, CH-4002, Basel, Switzerland
| | - Pierre Moulin
- Novartis Institutes for Biomedical Research, CH-4002, Basel, Switzerland
| | - Dominique Brees
- Novartis Institutes for Biomedical Research, CH-4002, Basel, Switzerland
| | - Salah-Dine Chibout
- Novartis Institutes for Biomedical Research, CH-4002, Basel, Switzerland
| | - Bernhard Ryffel
- CNRS, UMR7355, Orleans, France
- University of Orleans, INEM, Experimental and Molecular Immunology and Neurogenetics, Orleans, France
- Division of Immunology, Institute of Infectious Disease and Molecular Medicine, Health Sciences Faculty, University of Cape Town, South Africa
| | - Michael Kammüller
- Novartis Institutes for Biomedical Research, CH-4002, Basel, Switzerland
| | - Valerie F. Quesniaux
- CNRS, UMR7355, Orleans, France
- University of Orleans, INEM, Experimental and Molecular Immunology and Neurogenetics, Orleans, France
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39
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Domingo-Gonzalez R, Prince O, Cooper A, Khader SA. Cytokines and Chemokines in Mycobacterium tuberculosis Infection. Microbiol Spectr 2016; 4:10.1128/microbiolspec.TBTB2-0018-2016. [PMID: 27763255 PMCID: PMC5205539 DOI: 10.1128/microbiolspec.tbtb2-0018-2016] [Citation(s) in RCA: 234] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Indexed: 02/06/2023] Open
Abstract
Chemokines and cytokines are critical for initiating and coordinating the organized and sequential recruitment and activation of cells into Mycobacterium tuberculosis-infected lungs. Correct mononuclear cellular recruitment and localization are essential to ensure control of bacterial growth without the development of diffuse and damaging granulocytic inflammation. An important block to our understanding of TB pathogenesis lies in dissecting the critical aspects of the cytokine/chemokine interplay in light of the conditional role these molecules play throughout infection and disease development. Much of the data highlighted in this review appears at first glance to be contradictory, but it is the balance between the cytokines and chemokines that is critical, and the "goldilocks" (not too much and not too little) phenomenon is paramount in any discussion of the role of these molecules in TB. Determination of how the key chemokines/cytokines and their receptors are balanced and how the loss of that balance can promote disease is vital to understanding TB pathogenesis and to identifying novel therapies for effective eradication of this disease.
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Affiliation(s)
| | - Oliver Prince
- Department of Molecular Microbiology, Washington University in St. Louis, St. Louis, MO 63130
| | - Andrea Cooper
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester LE1 7RH, United Kingdom
| | - Shabaana A Khader
- Department of Molecular Microbiology, Washington University in St. Louis, St. Louis, MO 63130
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40
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Study of risk factors for pulmonary tuberculosis among diabetes mellitus patients. EGYPTIAN JOURNAL OF CHEST DISEASES AND TUBERCULOSIS 2016. [DOI: 10.1016/j.ejcdt.2016.05.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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41
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Liu Y, Chen S, Pan B, Guan Z, Yang Z, Duan L, Cai H. A subunit vaccine based on rH-NS induces protection against Mycobacterium tuberculosis infection by inducing the Th1 immune response and activating macrophages. Acta Biochim Biophys Sin (Shanghai) 2016; 48:909-922. [PMID: 27563010 DOI: 10.1093/abbs/gmw078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 07/07/2016] [Indexed: 11/12/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) is a Gram-positive pathogen which causes tuberculosis in both animals and humans. All tested rH-NS formulations induced a specific Th1 response, as indicated by increased production of interferon γ (IFN-γ) and interleukin 2 (IL-2) by lymphocytes in the spleen of mice which were immunized with rH-NS alone or with rH-NS and the adjuvant cyclic GMP-AMP (cGAMP). Serum from mice immunized with rH-NS with or without adjuvant also had higher levels of IL-12p40 and TNF-α, compared with those from control mice immunized with phosphate-buffered saline. Both vaccines increased protective efficacy in mice which were challenged with Mtb H37Rv, as measured by reduced relative CFU counts in the lungs. We found that rH-NS induced the production of TNF-α, IL-6, and IL-12p40, which relied on the activation of mitogen-activated protein kinases by stimulating the rapid phosphorylation of ERK1/2, p38, and JNK, and on the activation of transcription factor NF-κB in macrophages. Additionally, we also found that rH-NS could interact with TLR2 but not TLR4 in pull-down assays. The rH-NS-induced cytokine production from TLR2-silenced RAW264.7 cells was lower than that from BALB/c macrophages. Prolonged exposure (>24 h) of RAW264.7 cells to rH-NS resulted in a significant enhancement in IFN-γ-induced MHC II expression, which was not found in shTLR2-treated RAW264.7 cells. These results suggest that rH-NS is a TLR2 agonist which induces the production of cytokines by macrophages and up-regulates macrophage function.
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Affiliation(s)
- Yuan Liu
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing 100871, China
| | - Suting Chen
- National Clinical Laboratory on Tuberculosis, Beijing Key Laboratory on Drug-Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing 101149, China
| | - Bowen Pan
- State Key Laboratory of Natural and Biomimetic Drugs, Peking Universtiy Health Science Center, Beijing 100191, China
| | - Zhu Guan
- State Key Laboratory of Natural and Biomimetic Drugs, Peking Universtiy Health Science Center, Beijing 100191, China
| | - Zhenjun Yang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking Universtiy Health Science Center, Beijing 100191, China
| | - Linfei Duan
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing 100871, China
| | - Hong Cai
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing 100871, China
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42
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Inflammasome Activation and Function During Infection with Mycobacterium Tuberculosis. Curr Top Microbiol Immunol 2016; 397:183-97. [DOI: 10.1007/978-3-319-41171-2_9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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43
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Marinho FV, Fahel JS, Scanga CA, Gomes MTR, Guimarães G, Carvalho GRM, Morales SV, Báfica A, Oliveira SC. Lack of IL-1 Receptor–Associated Kinase-4 Leads to Defective Th1 Cell Responses and Renders Mice Susceptible to Mycobacterial Infection. THE JOURNAL OF IMMUNOLOGY 2016; 197:1852-63. [DOI: 10.4049/jimmunol.1502157] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 06/19/2016] [Indexed: 01/03/2023]
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44
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Ahsan F, Moura-Alves P, Guhlich-Bornhof U, Klemm M, Kaufmann SHE, Maertzdorf J. Role of Interleukin 36γ in Host Defense Against Tuberculosis. J Infect Dis 2016; 214:464-74. [DOI: 10.1093/infdis/jiw152] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 04/07/2016] [Indexed: 12/11/2022] Open
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45
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microRNA-146a promotes mycobacterial survival in macrophages through suppressing nitric oxide production. Sci Rep 2016; 6:23351. [PMID: 27025258 PMCID: PMC4812255 DOI: 10.1038/srep23351] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 03/02/2016] [Indexed: 12/17/2022] Open
Abstract
Macrophages play a crucial role in host innate anti-mycobacterial defense, which is tightly regulated by multiple factors, including microRNAs. Our previous study showed that a panel of microRNAs was markedly up-regulated in macrophages upon mycobacterial infection. Here, we investigated the biological function of miR-146a during mycobacterial infection. miR-146a expression was induced both in vitro and in vivo after Mycobacterium bovis BCG infection. The inducible miR-146a could suppress the inducible nitric oxide (NO) synthase (iNOS) expression and NO generation, thus promoting mycobacterial survival in macrophages. Inhibition of endogenous miR-146a increased NO production and mycobacterial clearance. Moreover, miR-146a attenuated the activation of nuclear factor κB and mitogen-activated protein kinases signaling pathways during BCG infection, which in turn repressed iNOS expression. Mechanistically, miR-146a directly targeted tumor necrosis factor (TNF) receptor-associated factor 6 (TRAF6) at post-transcriptional level. Silencing TRAF6 decreased iNOS expression and NO production in BCG-infected macrophages, while overexpression of TRAF6 reversed miR-146a-mediated inhibition of NO production and clearance of mycobacteria. Therefore, we demonstrated a novel role of miR-146a in the modulation of host defense against mycobacterial infection by repressing NO production via targeting TRAF6, which may provide a promising therapeutic target for tuberculosis.
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46
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Khan N, Vidyarthi A, Javed S, Agrewala JN. Innate Immunity Holding the Flanks until Reinforced by Adaptive Immunity against Mycobacterium tuberculosis Infection. Front Microbiol 2016; 7:328. [PMID: 27014247 PMCID: PMC4789502 DOI: 10.3389/fmicb.2016.00328] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 03/01/2016] [Indexed: 12/12/2022] Open
Abstract
T cells play a cardinal role in imparting protection against Mycobacterium tuberculosis (Mtb). However, ample time is required before T-cells are able to evoke efficient effector responses in the lung, where the mycobacterium inflicts disease. This delay in T cells priming, which is termed as lag phase, provides sufficient time for Mtb to replicate and establish itself within the host. In contrast, innate immunity efficiently curb the growth of Mtb during initial phase of infection through several mechanisms. Pathogen recognition by innate cells rapidly triggers a cascade of events, such as apoptosis, autophagy, inflammasome formation and nitric oxide production to kill intracellular pathogens. Furthermore, bactericidal mechanisms such as autophagy and apoptosis, augment the antigen processing and presentation, thereby contributing substantially to the induction of adaptive immunity. This manuscript highlights the role of innate immune mechanisms in restricting the survival of Mtb during lag phase. Finally, this article provides new insight for designing immuno-therapies by targeting innate immune mechanisms to achieve optimum immune response to cure TB.
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Affiliation(s)
- Nargis Khan
- Council of Scientific and Industrial Research - Institute of Microbial Technology Chandigarh, India
| | - Aurobind Vidyarthi
- Council of Scientific and Industrial Research - Institute of Microbial Technology Chandigarh, India
| | - Shifa Javed
- Department of Cytology and Gynecologic Pathology, Postgraduate Institute of Medical Education and Research Chandigarh, India
| | - Javed N Agrewala
- Council of Scientific and Industrial Research - Institute of Microbial Technology Chandigarh, India
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47
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Innate myeloid cell TNFR1 mediates first line defence against primary Mycobacterium tuberculosis infection. Sci Rep 2016; 6:22454. [PMID: 26931771 PMCID: PMC4773807 DOI: 10.1038/srep22454] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 02/15/2016] [Indexed: 12/11/2022] Open
Abstract
TNF is crucial for controlling Mycobacterium tuberculosis infection and
understanding how will help immunomodulating the host response. Here we assessed the
contribution of TNFR1 pathway from innate myeloid versus T cells. We first
established the prominent role of TNFR1 in haematopoietic cells for controlling
M. tuberculosis in TNFR1 KO chimera mice. Further, absence of TNFR1
specifically on myeloid cells (M-TNFR1 KO) recapitulated the uncontrolled M.
tuberculosis infection seen in fully TNFR1 deficient mice, with increased
bacterial burden, exacerbated lung inflammation, and rapid death. Pulmonary IL-12p40
over-expression was attributed to a prominent CD11b+
Gr1high cell population in infected M-TNFR1 KO mice. By contrast,
absence of TNFR1 on T-cells did not compromise the control of M. tuberculosis
infection over 6-months. Thus, the protective TNF/TNFR1 pathway essential for
controlling primary M. tuberculosis infection depends on innate macrophage
and neutrophil myeloid cells, while TNFR1 pathway in T cells is dispensable.
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48
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Hussain Bhat K, Mukhopadhyay S. Macrophage takeover and the host-bacilli interplay during tuberculosis. Future Microbiol 2016; 10:853-72. [PMID: 26000654 DOI: 10.2217/fmb.15.11] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Macrophages are key type of antigen-presenting cells that arbitrate the first line of defense against various intracellular pathogens. Tuberculosis, both pulmonary and extrapulmonary, is an infectious disease of global concern caused by Mycobacterium tuberculosis. The bacillus is a highly successful pathogen and has acquired various strategies to downregulate critical innate-effector immune responses of macrophages, such as phagosome-lysosome fusion, autophagy, induction of cytokines, generation of reactive oxygen and nitrogen species and antigen presentation. In addition, the bacilli also subvert acquired immunity. In this review, we aim to provide an overview of different antimycobacterial immune functions of macrophage and the strategies adopted by the bacilli to manipulate these functions to favor its survival and replication inside the host.
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49
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Mycobacterial Metabolic Syndrome: LprG and Rv1410 Regulate Triacylglyceride Levels, Growth Rate and Virulence in Mycobacterium tuberculosis. PLoS Pathog 2016; 12:e1005351. [PMID: 26751071 PMCID: PMC4709180 DOI: 10.1371/journal.ppat.1005351] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 11/30/2015] [Indexed: 11/19/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) mutants lacking rv1411c, which encodes the lipoprotein LprG, and rv1410c, which encodes a putative efflux pump, are dramatically attenuated for growth in mice. Here we show that loss of LprG-Rv1410 in Mtb leads to intracellular triacylglyceride (TAG) accumulation, and overexpression of the locus increases the levels of TAG in the culture medium, demonstrating a role of this locus in TAG transport. LprG binds TAG within a large hydrophobic cleft and is sufficient to transfer TAG from donor to acceptor membranes. Further, LprG-Rv1410 is critical for broadly regulating bacterial growth and metabolism in vitro during carbon restriction and in vivo during infection of mice. The growth defect in mice is due to disrupted bacterial metabolism and occurs independently of key immune regulators. The in vivo essentiality of this locus suggests that this export system and other regulators of metabolism should be considered as targets for novel therapeutics. Of the estimated 2 billion people worldwide currently infected with Mycobacterium tuberculosis (Mtb), surprisingly few go on to develop active tuberculosis (TB) disease. The vast majority, 95 percent, of infected individuals develop latent TB, remaining infected but without disease. Despite its importance in global health, the question of what determines whether an infected individual will develop active or latent TB remains largely unanswered. Changes in how Mtb grows in response to stressors presented by the host environment likely play an important role in this process. In particular, the manifold ways in which Mtb synthesizes, degrades, and transports lipids dictates its growth in an infected host. Here, we show that lipid transport is an important function of two TB genes known to be required for Mtb’s ability to cause disease in the mouse model of infection. Using a variety of genetic and biochemical techniques, we found that the products of these genes prevent the cytosolic accumulation of a lipid associated with non-growing Mtb under the metabolic conditions it encounters during infection. Our results indicate an important role for the metabolism of Mtb in its ability to orchestrate a productive infection and cause disease.
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50
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Volpe E, Battistini L, Borsellino G. Advances in T Helper 17 Cell Biology: Pathogenic Role and Potential Therapy in Multiple Sclerosis. Mediators Inflamm 2015; 2015:475158. [PMID: 26770017 PMCID: PMC4685148 DOI: 10.1155/2015/475158] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 11/19/2015] [Indexed: 01/08/2023] Open
Abstract
The discovery of the T helper (Th) 17 lineage, involved in the protection against fungal and extracellular bacterial infections, has profoundly revolutionized our current understanding of T cell-mediated responses in autoimmune diseases, including multiple sclerosis (MS). Indeed, recent data demonstrate the pathogenic role of Th17 cells in autoimmune disorders. In particular, studies in MS and in its animal model (EAE, experimental autoimmune encephalomyelitis) have revealed a crucial role of Th17 cells in the pathogenesis of autoimmune demyelinating diseases in both mice and humans. Over the past years, several important aspects concerning Th17 cells have been elucidated, such as the factors which promote or inhibit their differentiation and the effector cytokines which mediate their responses. The identification of the features endowing Th17 cells with high pathogenicity in MS is of particular interest, and discoveries in Th17 cell biology and function could lead to the design of new strategies aimed at modulating the immune response in MS. Here, we will discuss recent advances in this field, with particular focus on the mechanisms conferring pathogenicity in MS and their potential modulation.
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Affiliation(s)
- Elisabetta Volpe
- Neuroimmunology Unit, Santa Lucia Foundation, Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - Luca Battistini
- Neuroimmunology Unit, Santa Lucia Foundation, Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - Giovanna Borsellino
- Neuroimmunology Unit, Santa Lucia Foundation, Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
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