1
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Li W, Yan ZF, Teng TS, Xiang XH. Mycobacterium tuberculosis Rv1043c regulates the inflammatory response by inhibiting the phosphorylation of TAK1. Int Microbiol 2024; 27:743-752. [PMID: 37676442 DOI: 10.1007/s10123-023-00428-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/24/2023] [Accepted: 08/29/2023] [Indexed: 09/08/2023]
Abstract
Mycobacterium tuberculosis can manipulate the host immunity through its effectors to ensure intracellular survival and colonization. Rv1043c has been identified as an effector potentially involved in M. tuberculosis pathogenicity. To explore the function of M. tuberculosis Rv1043c during infection, we overexpressed this protein in M. smegmatis, a non-pathogenic surrogate model in tuberculosis research. Here, we reported that Rv1043c enhanced mycobacterial survival and down-regulated the release of pro-inflammatory cytokines in macrophages and mice. In addition, Rv1043c inhibited the activation of MAPK and NF-κB signaling by preventing the phosphorylation of TAK1 indirectly. In conclusion, these data suggest that Rv1043c regulates the immune response and enhances the survival of recombinant M. smegmatis in vitro and in vivo.
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Affiliation(s)
- Wu Li
- Key Laboratory of Regional Characteristic Agricultural Resources, College of Life Sciences, Neijiang Normal University, Neijiang, Sichuan, 641100, People's Republic of China
| | - Zi-Fei Yan
- Key Laboratory of Regional Characteristic Agricultural Resources, College of Life Sciences, Neijiang Normal University, Neijiang, Sichuan, 641100, People's Republic of China
| | - Tie-Shan Teng
- School of Medical Sciences, College of Medicine, Henan University, Kaifeng, Henan, 475004, People's Republic of China
| | - Xiao-Hong Xiang
- School of Pharmacy, Chongqing Medical and Pharmaceutical College, Chongqing, 401331, People's Republic of China.
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2
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Li W, Yan Z, Zhang N, Zhang Z, Xiang X. Novel role of PE_PGRS47 in the alteration of mycobacterial cell wall integrity and drug resistance. Arch Microbiol 2023; 205:174. [PMID: 37022460 DOI: 10.1007/s00203-023-03515-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/11/2023] [Accepted: 03/23/2023] [Indexed: 04/07/2023]
Abstract
The proline-glutamic acid and proline-proline-glutamic acid (PE/PPE) family of proteins is widespread in pathogenic mycobacteria and plays different roles in mycobacterial physiology. While several PE/PPE family proteins have been studied, the exact function of most PE/PPE proteins in the physiology of Mycobacterium tuberculosis (Mtb) remains unknown. PE_PGRS47 belongs to the PE/PPE family of proteins reported to help Mtb evade protective host immune responses. In this study, we demonstrate a novel role of PE_PGRS47. Heterologous expression of the pe_pgrs47 gene in a non-pathogenic Mycobacterium smegmatis, intrinsically deficient of PE_PGRS protein, exhibits modulated colony morphology and cell wall lipid profile leading to a marked susceptibility to multiple antibiotics and environmental stressors. Using ethidium bromide/Nile red uptake assays, Mycobacterium smegmatis expressing PE_PGRS47 showed higher cell wall permeability than the control strain. Overall, these data suggested that PE_PGRS47 is cell surface exposed and influences cell wall integrity and the formation of mycobacterial colonies, ultimately potentiating the efficacy of lethal stresses against mycobacteria.
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Affiliation(s)
- Wu Li
- Key Laboratory of Regional Characteristic Agricultural Resources, College of Life Sciences, Neijiang Normal University, Neijiang, 641100, Sichuan, People's Republic of China.
| | - Zifei Yan
- Key Laboratory of Regional Characteristic Agricultural Resources, College of Life Sciences, Neijiang Normal University, Neijiang, 641100, Sichuan, People's Republic of China
| | - Nan Zhang
- Key Laboratory of Regional Characteristic Agricultural Resources, College of Life Sciences, Neijiang Normal University, Neijiang, 641100, Sichuan, People's Republic of China
| | - Zhiyong Zhang
- Key Laboratory of Regional Characteristic Agricultural Resources, College of Life Sciences, Neijiang Normal University, Neijiang, 641100, Sichuan, People's Republic of China
| | - Xiaohong Xiang
- School of Pharmacy, Chongqing Medical and Pharmaceutical College, Chongqing, 401331, People's Republic of China.
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3
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Li W, Deng W, Zhang N, Peng H, Xu Y. Mycobacterium tuberculosis Rv2387 Facilitates Mycobacterial Survival by Silencing TLR2/p38/JNK Signaling. Pathogens 2022; 11:pathogens11090981. [PMID: 36145413 PMCID: PMC9504853 DOI: 10.3390/pathogens11090981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/15/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) can evade antimicrobial immunity and persist within macrophages by interfering with multiple host cellular functions through its virulence factors, causing latent tuberculosis. The Rv2387 protein has been identified as a putative effector that potentially participates in Mtb pathogenicity. To explore the role of the Rv2387 protein in host–mycobacteria interactions, we established recombinant M. smegmatis strains and RAW264.7 cell lines that stably express the Rv2387 protein. We found that this protein suppresses mycobacteria infection-induced macrophage apoptosis by inactivating caspase-3/-8, thus facilitating the intracellular survival of mycobacteria. In addition, Rv2387 inhibits the production of inflammatory cytokines in macrophages by specifically suppressing TLR2-dependent stimulation of p38 and JNK MAPK pathways. Moreover, we further determined that the Rv2387 protein conferred a growth advantage over recombinant M. smegmatis and suppressed the inflammatory response in a mouse infection model. Overall, these data suggested that Rv2387 facilitates mycobacteria to escape host immunity and might be an essential virulence factor in Mtb.
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Affiliation(s)
- Wu Li
- The Joint Center for Infection and Immunity, Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
- Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
- Key Laboratory of Regional Characteristic Agricultural Resources, College of Life Sciences, Neijiang Normal University, Neijiang 641100, China
- Correspondence: (W.L.); (Y.X.)
| | - Wanyan Deng
- The Joint Center for Infection and Immunity, Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
- Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Nan Zhang
- Key Laboratory of Regional Characteristic Agricultural Resources, College of Life Sciences, Neijiang Normal University, Neijiang 641100, China
| | - Huijuan Peng
- Key Laboratory of Regional Characteristic Agricultural Resources, College of Life Sciences, Neijiang Normal University, Neijiang 641100, China
| | - Yi Xu
- The Joint Center for Infection and Immunity, Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
- Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
- Correspondence: (W.L.); (Y.X.)
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4
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Sudhakar P, Machiels K, Verstockt B, Korcsmaros T, Vermeire S. Computational Biology and Machine Learning Approaches to Understand Mechanistic Microbiome-Host Interactions. Front Microbiol 2021; 12:618856. [PMID: 34046017 PMCID: PMC8148342 DOI: 10.3389/fmicb.2021.618856] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 03/19/2021] [Indexed: 12/11/2022] Open
Abstract
The microbiome, by virtue of its interactions with the host, is implicated in various host functions including its influence on nutrition and homeostasis. Many chronic diseases such as diabetes, cancer, inflammatory bowel diseases are characterized by a disruption of microbial communities in at least one biological niche/organ system. Various molecular mechanisms between microbial and host components such as proteins, RNAs, metabolites have recently been identified, thus filling many gaps in our understanding of how the microbiome modulates host processes. Concurrently, high-throughput technologies have enabled the profiling of heterogeneous datasets capturing community level changes in the microbiome as well as the host responses. However, due to limitations in parallel sampling and analytical procedures, big gaps still exist in terms of how the microbiome mechanistically influences host functions at a system and community level. In the past decade, computational biology and machine learning methodologies have been developed with the aim of filling the existing gaps. Due to the agnostic nature of the tools, they have been applied in diverse disease contexts to analyze and infer the interactions between the microbiome and host molecular components. Some of these approaches allow the identification and analysis of affected downstream host processes. Most of the tools statistically or mechanistically integrate different types of -omic and meta -omic datasets followed by functional/biological interpretation. In this review, we provide an overview of the landscape of computational approaches for investigating mechanistic interactions between individual microbes/microbiome and the host and the opportunities for basic and clinical research. These could include but are not limited to the development of activity- and mechanism-based biomarkers, uncovering mechanisms for therapeutic interventions and generating integrated signatures to stratify patients.
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Affiliation(s)
- Padhmanand Sudhakar
- Department of Chronic Diseases, Metabolism and Ageing, Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
- Earlham Institute, Norwich, United Kingdom
- Quadram Institute Bioscience, Norwich, United Kingdom
| | - Kathleen Machiels
- Department of Chronic Diseases, Metabolism and Ageing, Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
| | - Bram Verstockt
- Department of Chronic Diseases, Metabolism and Ageing, Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Tamas Korcsmaros
- Earlham Institute, Norwich, United Kingdom
- Quadram Institute Bioscience, Norwich, United Kingdom
| | - Séverine Vermeire
- Department of Chronic Diseases, Metabolism and Ageing, Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
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5
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Ruan C, Li J, Niu J, Li P, Huang Y, Li X, Duan W, Yan S, Zhen J, Xie J. Mycobacterium tuberculosis Rv0426c promotes recombinant mycobacteria intracellular survival via manipulating host inflammatory cytokines and suppressing cell apoptosis. INFECTION GENETICS AND EVOLUTION 2019; 77:104070. [PMID: 31614213 DOI: 10.1016/j.meegid.2019.104070] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 10/08/2019] [Accepted: 10/11/2019] [Indexed: 01/19/2023]
Abstract
Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb) is still a leading cause of death worldwide. M. tuberculosis has evolved multipronged strategies to subvert host immune defenses and establish an immunologically privileged niche in macrophages. Rv0426c has been predicted to be an effector involved in the Mtb-host interactions. To investigate the potential role played by Rv0426c, we constructed recombinant M. smegmatis strains with heterologous expression of Rv0426c. We observed that Rv0426c recombinants became more susceptible to various stresses by increasing cell wall permeability, however with elevated early survival rate within macrophages. This was accompanied by decreased levels of pro-inflammatory cytokines and host cell apoptosis. The data suggested that Rv0426c was a new player involved in the interactions between Mtb and macrophages.
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Affiliation(s)
- Cao Ruan
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, China
| | - Jiang Li
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, China
| | - Jingjing Niu
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, China
| | - Ping Li
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, China
| | - Yu Huang
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, China
| | - Xue Li
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, China
| | - Wei Duan
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, China
| | - Shuangquan Yan
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, China
| | - Junfeng Zhen
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, China
| | - Jianping Xie
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, China.
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6
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Yan S, Zhen J, Li Y, Zhang C, Stojkoska A, Lambert N, Li Q, Li P, Xie J. Mce-associated protein Rv0177 alters the cell wall structure of Mycobacterium smegmatis and promotes macrophage apoptosis via regulating the cytokines. Int Immunopharmacol 2019; 66:205-214. [DOI: 10.1016/j.intimp.2018.11.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 10/26/2018] [Accepted: 11/09/2018] [Indexed: 10/27/2022]
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7
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The Mycobacterium tuberculosis protein Rv2387 is involved in cell wall remodeling and susceptibility to acidic conditions. Biochem Biophys Res Commun 2018; 503:625-630. [PMID: 29902462 DOI: 10.1016/j.bbrc.2018.06.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 06/11/2018] [Indexed: 11/22/2022]
Abstract
The distinctive cell walls of mycobacteria are characteristic features of these bacteria. Individual cell wall components influence diverse mycobacterial phenotypes, such as colony morphology, virulence and stress resistance. To investigate the role of the hypothetical protein Rv2387, we constructed a Mycobacterium smegmatis strain that heterologously expressed this ORF, and we observed that the M. smegmatis strain expressing Rv2387 exhibited altered colony morphology and cell wall lipid composition, leading to a marked decrease in the resistance against acidic conditions. This study demonstrates that due to its impact on cell wall remodeling, Rv2387 might play an important role in mycobacterial physiology.
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8
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He X, Jiang HW, Chen H, Zhang HN, Liu Y, Xu ZW, Wu FL, Guo SJ, Hou JL, Yang MK, Yan W, Deng JY, Bi LJ, Zhang XE, Tao SC. Systematic Identification of Mycobacterium tuberculosis Effectors Reveals that BfrB Suppresses Innate Immunity. Mol Cell Proteomics 2017; 16:2243-2253. [PMID: 29018126 DOI: 10.1074/mcp.ra117.000296] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Indexed: 12/14/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) has evolved multiple strategies to counter the human immune system. The effectors of Mtb play important roles in the interactions with the host. However, because of the lack of highly efficient strategies, there are only a handful of known Mtb effectors, thus hampering our understanding of Mtb pathogenesis. In this study, we probed Mtb proteome microarray with biotinylated whole-cell lysates of human macrophages, identifying 26 Mtb membrane proteins and secreted proteins that bind to macrophage proteins. Combining GST pull-down with mass spectroscopy then enabled the specific identification of all binders. We refer to this proteome microarray-based strategy as SOPHIE (Systematic unlOcking of Pathogen and Host Interacting Effectors). Detailed investigation of a novel effector identified here, the iron storage protein BfrB (Rv3841), revealed that BfrB inhibits NF-κB-dependent transcription through binding and reducing the nuclear abundance of the ribosomal protein S3 (RPS3), which is a functional subunit of NF- κB. The importance of this interaction was evidenced by the promotion of survival in macrophages of the mycobacteria, Mycobacterium smegmatis, by overexpression of BfrB. Thus, beyond demonstrating the power of SOPHIE in the discovery of novel effectors of human pathogens, we expect that the set of Mtb effectors identified in this work will greatly facilitate the understanding of the pathogenesis of Mtb, possibly leading to additional potential molecular targets in the battle against tuberculosis.
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Affiliation(s)
- Xiang He
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China.,§School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - He-Wei Jiang
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hong Chen
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hai-Nan Zhang
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yin Liu
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhao-Wei Xu
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Fan-Lin Wu
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shu-Juan Guo
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jing-Li Hou
- ¶Instrumental Analysis Center of Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ming-Kun Yang
- ‖Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Wei Yan
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiao-Yu Deng
- **State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China
| | - Li-Jun Bi
- ‡‡National Key Laboratory of Biomacromolecules, Key Laboratory of Non-Coding; RNA and Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.,§§School of Stomatology and Medicine, Foshan University, Foshan 528000, Guangdong Province, China
| | - Xian-En Zhang
- ‡‡National Key Laboratory of Biomacromolecules, Key Laboratory of Non-Coding; RNA and Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Sheng-Ce Tao
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China; .,§School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.,¶¶State Key Laboratory of Oncogenes and Related Genes, Shanghai 200240, China
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9
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Samten B, Fannin S, Sarva K, Yi N, Madiraju M, Rajagopalan M. Modulation of human T cell cytokines by the Mycobacterium tuberculosis -secreted protein Wag31. Tuberculosis (Edinb) 2016; 101S:S99-S104. [DOI: 10.1016/j.tube.2016.09.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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10
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Deboosère N, Iantomasi R, Queval CJ, Song OR, Deloison G, Jouny S, Debrie AS, Chamaillard M, Nigou J, Cohen-Gonsaud M, Locht C, Brodin P, Veyron-Churlet R. LppM impact on the colonization of macrophages by Mycobacterium tuberculosis. Cell Microbiol 2016; 19. [PMID: 27220037 PMCID: PMC5217060 DOI: 10.1111/cmi.12619] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 05/10/2016] [Accepted: 05/12/2016] [Indexed: 01/19/2023]
Abstract
Mycobacterium tuberculosis produces several bacterial effectors impacting the colonization of phagocytes. Here, we report that the putative lipoprotein LppM hinders phagocytosis by macrophages in a toll-like receptor 2-dependent manner. Moreover, recombinant LppM is able to functionally complement the phenotype of the mutant, when exogenously added during macrophage infection. LppM is also implicated in the phagosomal maturation, as a lppM deletion mutant is more easily addressed towards the acidified compartments of the macrophage than its isogenic parental strain. In addition, this mutant was affected in its ability to induce the secretion of pro-inflammatory chemokines, interferon-gamma-inducible protein-10, monocyte chemoattractant protein-1 and macrophage inflammatory protein-1α. Thus, our results describe a new mycobacterial protein involved in the early trafficking of the tubercle bacillus and its manipulation of the host immune response.
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Affiliation(s)
- Nathalie Deboosère
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
| | - Raffaella Iantomasi
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
| | - Christophe J Queval
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
| | - Ok-Ryul Song
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
| | - Gaspard Deloison
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
| | - Samuel Jouny
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
| | - Anne-Sophie Debrie
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
| | - Mathias Chamaillard
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
| | - Jérôme Nigou
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse CNRS, Toulouse, F-31077, France
| | - Martin Cohen-Gonsaud
- Centre de Biochimie Structurale, CNRS UMR 5048, Inserm U1054, Université de Montpellier, Montpellier, F-34090, France
| | - Camille Locht
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
| | - Priscille Brodin
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
| | - Romain Veyron-Churlet
- Univ. Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Lille, F-59000, France.,CNRS, UMR 8204, Lille, F-59000, France.,Inserm U1019, Lille, F-59000, France.,CHU Lille, Lille, F-59000, France.,Institut Pasteur de Lille, Lille, F-59000, France
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11
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Li W, Liu M, Xie J. Rv3369 Induces Cytokine Interleukin-1β Production and Enhances Mycobacterium smegmatis Intracellular Survival. J Interferon Cytokine Res 2015; 36:140-7. [PMID: 26588672 DOI: 10.1089/jir.2015.0090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The pathogenesis of tuberculosis, caused by Mycobacterium tuberculosis, is largely because of the pathogen's successful entry and survival within macrophages. We predicted that rv3369, a gene encoding a conserved protein, might play a role in the interactions with host cells. To test this, rv3369 gene was heterologously expressed in a nonpathogenic fast-growing Mycobacterium smegmatis strain. The recombinant strain survives better than the control within macrophages, accompanied by more host cell death and a marked higher secretion of interleukin-1β (IL-1β). Furthermore, pharmacological inhibition experiments showed that the NF-κB and ERK pathways were involved in the Rv3369-triggered IL-1β changes. These results provided evidence for the engagement of Rv3369 in the interaction between mycobacteria and host.
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Affiliation(s)
- Wu Li
- 1 Institute of Modern Biopharmaceuticals, State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Ministry of Education Eco-Environment of the Three Gorges Reservoir Region, School of Life Sciences, Southwest University , Chongqing, China .,2 College of Life Sciences, Neijiang Normal University , Neijiang, China
| | - Minqiang Liu
- 1 Institute of Modern Biopharmaceuticals, State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Ministry of Education Eco-Environment of the Three Gorges Reservoir Region, School of Life Sciences, Southwest University , Chongqing, China
| | - Jianping Xie
- 1 Institute of Modern Biopharmaceuticals, State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Ministry of Education Eco-Environment of the Three Gorges Reservoir Region, School of Life Sciences, Southwest University , Chongqing, China
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