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Nienaber A, Baumgartner J, Dolman RC, Ozturk M, Zandberg L, Hayford FEA, Brombacher F, Blaauw R, Parihar SP, Smuts CM, Malan L. Omega-3 Fatty Acid and Iron Supplementation Alone, but Not in Combination, Lower Inflammation and Anemia of Infection in Mycobacterium tuberculosis-Infected Mice. Nutrients 2020; 12:E2897. [PMID: 32971969 PMCID: PMC7551947 DOI: 10.3390/nu12092897] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/15/2020] [Accepted: 09/18/2020] [Indexed: 12/11/2022] Open
Abstract
Progressive inflammation and anemia are common in tuberculosis (TB) and linked to poor clinical outcomes. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have inflammation-resolving properties, whereas iron supplementation in TB may have limited efficacy and enhance bacterial growth. We investigated effects of iron and EPA/DHA supplementation, alone and in combination, on inflammation, anemia, iron status markers and clinical outcomes in Mycobacterium tuberculosis-infected C3HeB/FeJ mice. One week post-infection, mice received the AIN-93 diet without (control) or with supplemental iron (Fe), EPA/DHA, or Fe+EPA/DHA for 3 weeks. Mice supplemented with Fe or EPA/DHA had lower soluble transferrin receptor, ferritin and hepcidin than controls, but these effects were attenuated in Fe+EPA/DHA mice. EPA/DHA increased inflammation-resolving lipid mediators and lowered lung IL-1α, IFN-γ, plasma IL-1β, and TNF-α. Fe lowered lung IL-1α, IL-1β, plasma IL-1β, TNF-α, and IL-6. However, the cytokine-lowering effects in the lungs were attenuated with Fe+EPA/DHA. Mice supplemented with EPA/DHA had lower lung bacterial loads than controls, but this effect was attenuated in Fe+EPA/DHA mice. Thus, individually, post-infection EPA/DHA and iron supplementation lowered systemic and lung inflammation and mitigated anemia of infection in TB, but not when combined. EPA/DHA also enhanced bactericidal effects and could support inflammation resolution and management of anemia.
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Affiliation(s)
- Arista Nienaber
- Centre of Excellence for Nutrition, North-West University, Potchefstroom 2531, South Africa; (J.B.); (R.C.D.); (L.Z.); (F.E.A.H.); (C.M.S.); (L.M.)
| | - Jeannine Baumgartner
- Centre of Excellence for Nutrition, North-West University, Potchefstroom 2531, South Africa; (J.B.); (R.C.D.); (L.Z.); (F.E.A.H.); (C.M.S.); (L.M.)
- Laboratory of Human Nutrition, ETH, 8092 Zurich, Switzerland
| | - Robin C. Dolman
- Centre of Excellence for Nutrition, North-West University, Potchefstroom 2531, South Africa; (J.B.); (R.C.D.); (L.Z.); (F.E.A.H.); (C.M.S.); (L.M.)
| | - Mumin Ozturk
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Cape Town-Component, University of Cape Town, Cape Town 7925, South Africa; (M.O.); (F.B.); (S.P.P.)
- Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, University of Cape Town, Cape Town 7925, South Africa
| | - Lizelle Zandberg
- Centre of Excellence for Nutrition, North-West University, Potchefstroom 2531, South Africa; (J.B.); (R.C.D.); (L.Z.); (F.E.A.H.); (C.M.S.); (L.M.)
| | - Frank E. A. Hayford
- Centre of Excellence for Nutrition, North-West University, Potchefstroom 2531, South Africa; (J.B.); (R.C.D.); (L.Z.); (F.E.A.H.); (C.M.S.); (L.M.)
- Department of Nutrition and Dietetics, School of biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra Box KB143, Ghana
| | - Frank Brombacher
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Cape Town-Component, University of Cape Town, Cape Town 7925, South Africa; (M.O.); (F.B.); (S.P.P.)
- Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, University of Cape Town, Cape Town 7925, South Africa
- Wellcome Centre for Infectious Diseases Research in Africa (CIDRI-Africa) and Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, Cape Town 7925, South Africa
| | - Renee Blaauw
- Division of Human Nutrition, Stellenbosch University, Tygerberg, Cape Town 7505, South Africa;
| | - Suraj P. Parihar
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Cape Town-Component, University of Cape Town, Cape Town 7925, South Africa; (M.O.); (F.B.); (S.P.P.)
- Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, University of Cape Town, Cape Town 7925, South Africa
- Wellcome Centre for Infectious Diseases Research in Africa (CIDRI-Africa) and Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, Cape Town 7925, South Africa
- Division of Medical Microbiology, Institute of Infectious Diseases and Molecular Medicine (IDM), Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
| | - Cornelius M. Smuts
- Centre of Excellence for Nutrition, North-West University, Potchefstroom 2531, South Africa; (J.B.); (R.C.D.); (L.Z.); (F.E.A.H.); (C.M.S.); (L.M.)
| | - Linda Malan
- Centre of Excellence for Nutrition, North-West University, Potchefstroom 2531, South Africa; (J.B.); (R.C.D.); (L.Z.); (F.E.A.H.); (C.M.S.); (L.M.)
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152
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Silwal P, Kim JK, Kim YJ, Jo EK. Mitochondrial Reactive Oxygen Species: Double-Edged Weapon in Host Defense and Pathological Inflammation During Infection. Front Immunol 2020; 11:1649. [PMID: 32922385 PMCID: PMC7457135 DOI: 10.3389/fimmu.2020.01649] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/19/2020] [Indexed: 12/12/2022] Open
Abstract
Mitochondria are inevitable sources for the generation of mitochondrial reactive oxygen species (mtROS) due to their fundamental roles in respiration. mtROS were reported to be bactericidal weapons with an innate effector function during infection. However, the controlled generation of mtROS is vital for the induction of efficient immune responses because excessive production of mtROS with mitochondrial damage leads to sustained inflammation, resulting in pathological outcomes such as sepsis. Here, we discuss the beneficial and detrimental roles of mtROS in the innate immune system during bacterial, viral, and fungal infections. Recent evidence suggests that several pathogens have evolved multiple strategies to modulate mtROS for their own benefit. We are just beginning to understand the mechanisms by which mtROS generation is regulated and how mtROS affect protective and pathological responses during infection. Several agents/small molecules that prevent the uncontrolled production of mtROS are known to be beneficial in the maintenance of tissue homeostasis during sepsis. mtROS-targeted approaches need to be incorporated into preventive and therapeutic strategies against a variety of infections.
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Affiliation(s)
- Prashanta Silwal
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, South Korea.,Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Jin Kyung Kim
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, South Korea.,Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Young Jae Kim
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, South Korea.,Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Eun-Kyeong Jo
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, South Korea.,Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, South Korea
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153
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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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154
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Wang M, Wan H, Wang S, Liao L, Huang Y, Guo L, Liu F, Shang L, Huang J, Ji D, Xia X, Jiang B, Chen D, Xiong K. RSK3 mediates necroptosis by regulating phosphorylation of RIP3 in rat retinal ganglion cells. J Anat 2020; 237:29-47. [PMID: 32162697 PMCID: PMC7309291 DOI: 10.1111/joa.13185] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 12/15/2022] Open
Abstract
Receptor-interacting protein 3 (RIP3) plays an important role in the necroptosis signaling pathway. Our previous studies have shown that the RIP3/mixed lineage kinase domain-like protein (MLKL)-mediated necroptosis occurs in retinal ganglion cell line 5 (RGC-5) following oxygen-glucose deprivation (OGD). However, upstream regulatory pathways of RIP3 are yet to be uncovered. The purpose of the present study was to investigate the role of p90 ribosomal protein S6 kinase 3 (RSK3) in the phosphorylation of RIP3 in RGC-5 cell necroptosis following OGD. Our results showed that expression of RSK3, RIP3, and MLKL was upregulated in necroptosis of RGC-5 after OGD. A computer simulation based on our preliminary results indicated that RSK3 might interact with RIP3, which was subsequently confirmed by co-immunoprecipitation. Further, we found that the application of a specific RSK inhibitor, LJH685, or rsk3 small interfering RNA (siRNA), downregulated the phosphorylation of RIP3. However, the overexpression of rip3 did not affect the expression of RSK3, thereby indicating that RSK3 could be a possible upstream regulator of RIP3 phosphorylation in OGD-induced necroptosis of RGC-5 cells. Moreover, our in vivo results showed that pretreatment with LJH685 before acute high intraocular pressure episodes could reduce the necroptosis of retinal neurons and improve recovery of impaired visual function. Taken together, our findings suggested that RSK3 might work as an upstream regulator of RIP3 phosphorylation during RGC-5 necroptosis.
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Affiliation(s)
- Mi Wang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Hao Wan
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Shuchao Wang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Lvshuang Liao
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Yanxia Huang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Limin Guo
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Fengxia Liu
- Department of Human AnatomySchool of Basic Medical ScienceXinjiang Medical UniversityUrumqiChina
| | - Lei Shang
- Jiangxi Research Institute of Ophthalmology and Visual SciencesAffiliated Eye Hospital of Nanchang UniversityNanchangChina
| | - Jufang Huang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
| | - Dan Ji
- Hunan Key Laboratory of OphthalmologyChangshaChina
- Department of OphthalmologyXiangya HospitalCentral South UniversityChangshaChina
| | - Xiaobo Xia
- Hunan Key Laboratory of OphthalmologyChangshaChina
- Department of OphthalmologyXiangya HospitalCentral South UniversityChangshaChina
| | - Bin Jiang
- Department of OphthalmologyThe Second Xiangya HospitalCentral South UniversityChangshaChina
| | - Dan Chen
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
| | - Kun Xiong
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
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155
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Lohrmann F, Forde AJ, Merck P, Henneke P. Control of myeloid cell density in barrier tissues. FEBS J 2020; 288:405-426. [PMID: 32502309 DOI: 10.1111/febs.15436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 04/21/2020] [Accepted: 06/01/2020] [Indexed: 12/19/2022]
Abstract
The interface between the mammalian host and its environment is formed by barrier tissues, for example, of the skin, and the respiratory and the intestinal tracts. On the one hand, barrier tissues are colonized by site-adapted microbial communities, and on the other hand, they contain specific myeloid cell networks comprising macrophages, dendritic cells, and granulocytes. These immune cells are tightly regulated in function and cell number, indicating important roles in maintaining tissue homeostasis and immune balance in the presence of commensal microorganisms. The regulation of myeloid cell density and activation involves cell-autonomous 'single-loop circuits' including autocrine mechanisms. However, an array of microenvironmental factors originating from nonimmune cells and the microbiota, as well as the microanatomical structure, impose additional layers of regulation onto resident myeloid cells. This review discusses models integrating these factors into cell-specific programs to instruct differentiation and proliferation best suited for the maintenance and renewal of immune homeostasis in the tissue-specific environment.
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Affiliation(s)
- Florens Lohrmann
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Medical Center - University of Freiburg, Germany.,Institute for Immunodeficiency (IFI), Faculty of Medicine, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Germany.,Spemann Graduate School for Biology and Medicine, University of Freiburg, Germany.,IMM-PACT Clinician Scientist Program, Faculty of Medicine, University of Freiburg, Germany
| | - Aaron J Forde
- Institute for Immunodeficiency (IFI), Faculty of Medicine, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Germany.,Faculty of Biology, university of Freiburg, Germany
| | - Philipp Merck
- Institute for Immunodeficiency (IFI), Faculty of Medicine, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Germany
| | - Philipp Henneke
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Medical Center - University of Freiburg, Germany.,Institute for Immunodeficiency (IFI), Faculty of Medicine, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Germany
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156
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Illuminating Macrophage Contributions to Host-Pathogen Interactions In Vivo: the Power of Zebrafish. Infect Immun 2020; 88:IAI.00906-19. [PMID: 32179583 DOI: 10.1128/iai.00906-19] [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] [Indexed: 12/15/2022] Open
Abstract
Macrophages are a key cell type in innate immunity. Years of in vitro cell culture studies have unraveled myriad macrophage pathways that combat pathogens and demonstrated how pathogen effectors subvert these mechanisms. However, in vitro cell culture studies may not accurately reflect how macrophages fit into the context of an innate immune response in whole animals with multiple cell types and tissues. Larval zebrafish have emerged as an intermediate model of innate immunity and host-pathogen interactions to bridge the gap between cell culture studies and mammalian models. These organisms possess an innate immune system largely conserved with that of humans and allow state-of-the-art genetic and imaging techniques, all in the context of an intact organism. Using larval zebrafish, researchers are elucidating the function of macrophages in response to many different infections, including both bacterial and fungal pathogens. The goal of this review is to highlight studies in zebrafish that utilized live-imaging techniques to analyze macrophage activities in response to pathogens. Recent studies have explored the roles of specific pathways and mechanisms in macrophage killing ability, explored how pathogens subvert these responses, identified subsets of macrophages with differential microbicidal activities, and implicated macrophages as an intracellular niche for pathogen survival and trafficking. Research using this model continues to advance our understanding of how macrophages, and specific pathways inside these cells, fit into complex multicellular innate immune responses in vivo, providing important information on how pathogens evade these pathways and how we can exploit them for development of treatments against microbial infections.
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157
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Linnerz T, Hall CJ. The Diverse Roles of Phagocytes During Bacterial and Fungal Infections and Sterile Inflammation: Lessons From Zebrafish. Front Immunol 2020; 11:1094. [PMID: 32582182 PMCID: PMC7289964 DOI: 10.3389/fimmu.2020.01094] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 05/06/2020] [Indexed: 12/23/2022] Open
Abstract
The immediate and natural reaction to both infectious challenges and sterile insults (wounds, tissue trauma or crystal deposition) is an acute inflammatory response. This inflammatory response is mediated by activation of the innate immune system largely comprising professional phagocytes (neutrophils and macrophages). Zebrafish (danio rerio) larvae possess many advantages as a model organism, including their genetic tractability and highly conserved innate immune system. Exploiting these attributes and the live imaging potential of optically transparent zebrafish larvae has greatly contributed to our understanding of how neutrophils and macrophages orchestrate the initiation and resolution phases of inflammatory responses. Numerous bacterial and fungal infection models have been successfully established using zebrafish as an animal model and studies investigating neutrophil and macrophage behavior to sterile insults have also provided unique insights. In this review we highlight how examining the larval zebrafish response to specific bacterial and fungal pathogens has uncovered cellular and molecular mechanisms behind a variety of phagocyte responses, from those that protect the host to those that are detrimental. We also describe how modeling sterile inflammation in larval zebrafish has provided an opportunity to dissect signaling pathways that control the recruitment, and fate, of phagocytes at inflammatory sites. Finally, we briefly discuss some current limitations, and opportunities to improve, the zebrafish model system for studying phagocyte biology.
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Affiliation(s)
- Tanja Linnerz
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Christopher J Hall
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
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158
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Wu T, Jiao L, Bai H, Hu X, Wang M, Zhao Z, Xue H, Ying B. The dominant model analysis of Sirt3 genetic variants is associated with susceptibility to tuberculosis in a Chinese Han population. Mol Genet Genomics 2020; 295:1155-1162. [PMID: 32462533 DOI: 10.1007/s00438-020-01685-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 05/06/2020] [Indexed: 02/05/2023]
Abstract
Tuberculosis (TB) is a complex infectious disease caused by the pathogen Mycobacterium tuberculosis (Mtb) which has coexisted with humanity since the Neolithic. Recent research indicated that SIRT3 plays a pivotal role in promoting the antimycobacterial response of mitochondria and autophagy during Mtb infection. A case-control study comprised 900 TB patients and 1534 healthy controls who were retrospectively enrolled to assess the association between Sirt3 gene polymorphisms and TB susceptibility. In total, five single-nucleotide polymorphisms (SNPs) (rs511744, rs3782118, rs7104764, rs536715 and rs28365927) were selected through database 1000 Genomes Project and offline software Haploview V4.2 and genotyped by a customized 2 × 48-Plex SNPscan™ Kit. Our results suggested that the minor allele genotypes (A carriers) of rs3782118 confers the decreased risk of TB susceptibility (pBonferroni = 0.032), and a similar but more significant effect was observed under the dominant model analysis (OR 0.787, 95% CI 0.666-0.931, pBonferroni = 0.026). Haplotype analysis showed that haplotype AGAAG (rs511744/rs3782118/rs7104764/rs536715/rs28365927) was associated with an increased risk of TB (p = 0.023, OR 1.159, 95% CI 1.019-1.317). In stratification analysis, we found that rs3782118 was associated with decreased risk of TB in female subgroup under the dominant model analysis (pBonferroni = 0.016, OR 0.678, 95% CI 0.523-0.878). Moreover, functional annotations for three loci (rs7930823, rs3782116 and rs3782115) which are strongly linked to rs3782118 indicated that they may be responsible for the changes in some motifs. In conclusion, our study suggested that the SNP rs3782118 was associated with a lower susceptibility to TB, especially under the dominant model analysis and that the haplotype AGAAG (containing the major allele G of rs3782118) was associated with an increased risk of TB. Further independent cohort studies are necessary to validate the protective effect of Sirt3 genetic variants on the risk of TB.
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Affiliation(s)
- Tao Wu
- Department of Laboratory Medicine and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, Sichuan, China.,Department of Clinical Laboratory Medicine, People's Hospital of Ningxia Hui Autonomous Region (First Affiliated Hospital of Northwest Minzu University), Yinchuan, Ningxia Hui Autonomous Region, China
| | - Lin Jiao
- Department of Laboratory Medicine and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Hao Bai
- Department of Laboratory Medicine and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Xuejiao Hu
- Department of Laboratory Medicine and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, Sichuan, China.,Division of Laboratory Medicine, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Minjin Wang
- Department of Laboratory Medicine and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Zhenzhen Zhao
- Department of Laboratory Medicine and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Hui Xue
- Precision Medicine Key Laboratory of Sichuan Province and Precision Medicine Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China.
| | - Binwu Ying
- Department of Laboratory Medicine and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, Sichuan, China.
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159
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160
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Salvadores N, Court FA. The necroptosis pathway and its role in age-related neurodegenerative diseases: will it open up new therapeutic avenues in the next decade? Expert Opin Ther Targets 2020; 24:679-693. [PMID: 32310729 DOI: 10.1080/14728222.2020.1758668] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
INTRODUCTION Necroptosis is a programmed form of necrotic cell death. Growing evidence demonstrates that necroptosis contributes to cell demise in different pathological conditions including age-dependent neurodegenerative diseases (NDs). These findings open new avenues for understanding the mechanisms of neuronal loss in NDs, which might eventually translate into novel therapeutic interventions. AREAS COVERED We reviewed key aspects of necroptosis, in health and disease, focusing on evidence demonstrating its involvement in the pathogenesis of age-related NDs. We then highlight the activation of this pathway in the mechanism of axonal degeneration. We searched on PubMed the literature regarding necroptosis published between 2008 and 2020 and reviewed all publications were necroptosis was studied in the context of age-related NDs. EXPERT OPINION Axonal loss and neuronal death are the ultimate consequences of NDs that translate into disease phenotypes. Targeting degenerative mechanisms of the neuron appears as a strategy that might cover a wide range of diseases. Thus, the participation of necroptosis as a common mediator of neuronal demise emerges as a promising target for therapeutic intervention. Considering evidence demonstrating that necroptosis mediates axonal degeneration, we propose and discuss the potential of targeting necroptosis-mediated axonal destruction as a strategy to tackle NDs before neuronal loss occurs.
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Affiliation(s)
- Natalia Salvadores
- Faculty of Sciences, Center for Integrative Biology, Universidad Mayor , Santiago, Chile.,Fondap Geroscience Center for Brain Health and Metabolism , Santiago, Chile
| | - Felipe A Court
- Faculty of Sciences, Center for Integrative Biology, Universidad Mayor , Santiago, Chile.,Fondap Geroscience Center for Brain Health and Metabolism , Santiago, Chile
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161
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Fumanal M, Di Zeo DE, Anguís V, Fernández-Diaz C, Alarcón FJ, Piñera R, Albaladejo-Riad N, Esteban MA, Moriñigo MA, Balebona MC. Inclusion of dietary Ulva ohnoi 5% modulates Solea senegalensis immune response during Photobacterium damselae subsp. piscicida infection. FISH & SHELLFISH IMMUNOLOGY 2020; 100:186-197. [PMID: 32145450 DOI: 10.1016/j.fsi.2020.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/04/2020] [Accepted: 03/04/2020] [Indexed: 06/10/2023]
Abstract
Macroalgae represent valuable sources of functional ingredients for fish diets, and the influence of supplemented aquafeeds on growth performance has been studied for some fish and seaweed species. In the present work, the potential immunomodulation exerted by U. ohnoi (5%) as dietary ingredient was investigated in Senegalese sole. After feeding with the experimental diets for 90 d, fish immune response before and after challenge with Photobacterium damselae subsp. piscicida (Phdp) was assessed. In absence of infection, systemic immune response was not modified by 5% U. ohnoi dietary inclusion for 90 d. Thus, no differences in liver and head kidney immune gene transcription or serum lysozyme, peroxidase, antiprotease and complement activities were observed based on the diet received by Senegalese sole specimens. Regarding mucosal immune parameters, no changes in gene transcription were detected in the skin and gills, whilst only tnf, cd4 and cd8 were significantly up-regulated in the intestine of fish fed with U. ohnoi, compared to the values obtained with control diet. On the contrary, when S. senegalensis specimens were challenged with Phdp, modulation of the immune response consisting in increased transcription of genes encoding complement (c1q4, c3, c9), lysozyme g (lysg), tumor necrosis factor alpha (tnfα) as well as those involved in the antioxidant response (gpx, sodmn) and iron metabolism (ferrm, hamp-1) was observed in the liver of fish fed with U. ohnoi. In parallel, decreased inflammatory cytokine and complement encoding gene transcription was displayed by the spleen of fish receiving the algal diet. Though mortality rates due to Phdp challenge were not affected by the diet received, lower pathogen loads were detected in the liver of soles receiving U. ohnoi diet. Further research to investigate the effects of higher inclusion levels of this seaweed in fish diets, feeding during short periods as wells as to assess the response against other pathogens needs to be carried out.
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Affiliation(s)
- Milena Fumanal
- Departamento de Microbiología, Universidad de Málaga, Andalucia Tech, Campus de Teatinos s/n, 29071, Málaga, Spain
| | - Daniel E Di Zeo
- Departamento de Microbiología, Universidad de Málaga, Andalucia Tech, Campus de Teatinos s/n, 29071, Málaga, Spain
| | - Victoria Anguís
- IFAPA Centro El Toruño, Camino Tiro Pichón s/n, 11500, El Puerto de Santa María, Cádiz, Spain
| | - Catalina Fernández-Diaz
- IFAPA Centro El Toruño, Camino Tiro Pichón s/n, 11500, El Puerto de Santa María, Cádiz, Spain
| | - F Javier Alarcón
- Departamento de Biología y Geología, Universidad de Almería, Almería, Spain
| | - Rocío Piñera
- Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional Campus Mare Nostrum, University of Murcia, 30100, Murcia, Spain
| | - Nora Albaladejo-Riad
- Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional Campus Mare Nostrum, University of Murcia, 30100, Murcia, Spain
| | - M Angeles Esteban
- Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional Campus Mare Nostrum, University of Murcia, 30100, Murcia, Spain
| | - Miguel A Moriñigo
- Departamento de Microbiología, Universidad de Málaga, Andalucia Tech, Campus de Teatinos s/n, 29071, Málaga, Spain
| | - M Carmen Balebona
- Departamento de Microbiología, Universidad de Málaga, Andalucia Tech, Campus de Teatinos s/n, 29071, Málaga, Spain.
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162
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Faergeman SL, Evans H, Attfield KE, Desel C, Kuttikkatte SB, Sommerlund M, Jensen LT, Frokiaer J, Friese MA, Matthews PM, Luchtenborg C, Brügger B, Oturai AB, Dendrou CA, Fugger L. A novel neurodegenerative spectrum disorder in patients with MLKL deficiency. Cell Death Dis 2020; 11:303. [PMID: 32358523 PMCID: PMC7195448 DOI: 10.1038/s41419-020-2494-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 04/06/2020] [Accepted: 04/07/2020] [Indexed: 12/14/2022]
Abstract
Mixed lineage kinase domain-like (MLKL) is the main executor of necroptosis, an inflammatory form of programmed cell death. Necroptosis is implicated in combating infections, but also in contributing to numerous other clinical conditions, including cardiovascular diseases and neurodegenerative disorders. Inhibition of necroptosis is therefore of therapeutic interest. Here we report two siblings both of whom over the course of 35 years developed a similar progressive, neurodegenerative spectrum disorder characterized by paresis, ataxia and dysarthria. Magnetic resonance imaging of their central nervous system (CNS) revealed severe global cerebral volume loss and atrophy of the cerebellum and brainstem. These brothers are homozygous for a rare haplotype identified by whole genome sequencing carrying a frameshift variant in MLKL, as well as an in-frame deletion of one amino acid in the adjacent fatty acid 2-hydroxylase (FA2H) gene. Functional studies of patient-derived primary cells demonstrated that the variant in MLKL leads to a deficiency of MLKL protein resulting in impairment of necroptosis. Conversely, shotgun lipidomic analysis of the variant in FA2H shows no impact on either the abundance or the enzymatic activity of the encoded hydroxylase. To our knowledge, this is the first report of complete necroptosis deficiency in humans. The findings may suggest that impaired necroptosis is a novel mechanism of neurodegeneration, promoting a disorder that shares some clinical features with primary progressive multiple sclerosis (PPMS) and other neurodegenerative diseases. Importantly, the necroptotic deficiency does not cause symptoms outside the nervous system, nor does it confer susceptibility to infections. Given the current interest in pharmacological inhibition of necroptosis by targeting MLKL and its associated pathways, this strategy should be developed with caution, with careful consideration of the possible development of adverse neurological effects.
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Affiliation(s)
- Soren L Faergeman
- Oxford Centre for Neuroinflammation, Nuffield Department of Clinical Neurosciences, Division of Clinical Neurology, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus, DK-8200, Denmark
| | - Hayley Evans
- Oxford Centre for Neuroinflammation, Nuffield Department of Clinical Neurosciences, Division of Clinical Neurology, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Kathrine E Attfield
- Oxford Centre for Neuroinflammation, Nuffield Department of Clinical Neurosciences, Division of Clinical Neurology, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Christiane Desel
- Oxford Centre for Neuroinflammation, Nuffield Department of Clinical Neurosciences, Division of Clinical Neurology, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Subita Balaram Kuttikkatte
- Oxford Centre for Neuroinflammation, Nuffield Department of Clinical Neurosciences, Division of Clinical Neurology, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Mette Sommerlund
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus, DK-8200, Denmark
| | - Lise Torp Jensen
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus, DK-8200, Denmark
| | - Jorgen Frokiaer
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus, DK-8200, Denmark
| | - Manuel A Friese
- Institute of Neuroimmunology and Multiple Sclerosis, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Paul M Matthews
- Division of Brain Sciences, Department of Medicine, UK Dementia Research Institute, Imperial College London, London, SW7 2AZ, UK
| | | | - Britta Brügger
- Heidelberg University Biochemistry Center (BZH), Heidelberg, D-69120, Germany
| | - Annette Bang Oturai
- Danish Multiple Sclerosis Center, Department of Neurology, Copenhagen University Hospital, Copenhagen, 2100, Denmark
| | - Calliope A Dendrou
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Lars Fugger
- Oxford Centre for Neuroinflammation, Nuffield Department of Clinical Neurosciences, Division of Clinical Neurology, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK.
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK.
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163
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Zhang R, Varela M, Forn-Cuní G, Torraca V, van der Vaart M, Meijer AH. Deficiency in the autophagy modulator Dram1 exacerbates pyroptotic cell death of Mycobacteria-infected macrophages. Cell Death Dis 2020; 11:277. [PMID: 32332700 PMCID: PMC7181687 DOI: 10.1038/s41419-020-2477-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 02/07/2023]
Abstract
DNA damage regulated autophagy modulator 1 (DRAM1) is a stress-inducible regulator of autophagy and cell death. DRAM1 has been implicated in cancer, myocardial infarction, and infectious diseases, but the molecular and cellular functions of this transmembrane protein remain poorly understood. Previously, we have proposed DRAM1 as a host resistance factor for tuberculosis (TB) and a potential target for host-directed anti-infective therapies. In this study, we generated a zebrafish dram1 mutant and investigated its loss-of-function effects during Mycobacterium marinum (Mm) infection, a widely used model in TB research. In agreement with previous knockdown analysis, dram1 mutation increased the susceptibility of zebrafish larvae to Mm infection. RNA sequencing revealed major effects of Dram1 deficiency on metabolic, immune response, and cell death pathways during Mm infection, and only minor effects on proteinase and metabolic pathways were found under uninfected conditions. Furthermore, unchallenged dram1 mutants did not display overt autophagic defects, but autophagic targeting of Mm was reduced in the absence of Dram1. The phagocytic ability of macrophages in dram1 mutants was unaffected, but acidification of Mm-containing vesicles was strongly reduced, indicating that Dram1 is required for phagosome maturation. By in vivo imaging, we observed that Dram1-deficient macrophages fail to restrict Mm during early stages of infection. The resulting increase in bacterial burden could be reverted by knockdown of inflammatory caspase a (caspa) and gasdermin Eb (gsdmeb), demonstrating pyroptosis as the mechanism underlying premature cell death of Mm-infected macrophages in dram1 mutants. Collectively, these data demonstrate that dissemination of mycobacterial infection in zebrafish larvae is promoted in the absence of Dram1 due to reduced maturation of mycobacteria-containing vesicles, failed intracellular containment, and consequent pyroptotic death of infected macrophages. These results provide new evidence that Dram1 plays a central role in host resistance to intracellular infection, acting at the crossroad of autophagy and cell death.
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Affiliation(s)
- Rui Zhang
- Institute of Biology Leiden, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Monica Varela
- Institute of Biology Leiden, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Gabriel Forn-Cuní
- Institute of Biology Leiden, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Vincenzo Torraca
- Institute of Biology Leiden, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Michiel van der Vaart
- Institute of Biology Leiden, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Annemarie H Meijer
- Institute of Biology Leiden, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands.
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164
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Bernut A, Dupont C, Ogryzko NV, Neyret A, Herrmann JL, Floto RA, Renshaw SA, Kremer L. CFTR Protects against Mycobacterium abscessus Infection by Fine-Tuning Host Oxidative Defenses. Cell Rep 2020; 26:1828-1840.e4. [PMID: 30759393 DOI: 10.1016/j.celrep.2019.01.071] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/17/2018] [Accepted: 01/17/2019] [Indexed: 01/03/2023] Open
Abstract
Infection by rapidly growing Mycobacterium abscessus is increasingly prevalent in cystic fibrosis (CF), a genetic disease caused by a defective CF transmembrane conductance regulator (CFTR). However, the potential link between a dysfunctional CFTR and vulnerability to M. abscessus infection remains unknown. Herein, we exploit a CFTR-depleted zebrafish model, recapitulating CF immuno-pathogenesis, to study the contribution of CFTR in innate immunity against M. abscessus infection. Loss of CFTR increases susceptibility to infection through impaired NADPH oxidase-dependent restriction of intracellular growth and reduced neutrophil chemotaxis, which together compromise granuloma formation and integrity. As a consequence, extracellular multiplication of M. abscessus expands rapidly, inducing abscess formation and causing lethal infections. Because these phenotypes are not observed with other mycobacteria, our findings highlight the crucial and specific role of CFTR in the immune control of M. abscessus by mounting effective oxidative responses.
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Affiliation(s)
- Audrey Bernut
- CNRS, UMR9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, Montpellier, France; Bateson Centre, University of Sheffield, Sheffield, UK; Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Sheffield, UK.
| | - Christian Dupont
- CNRS, UMR9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, Montpellier, France
| | - Nikolay V Ogryzko
- Bateson Centre, University of Sheffield, Sheffield, UK; Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Sheffield, UK
| | - Aymeric Neyret
- CNRS, UMR9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, Montpellier, France
| | | | - R Andres Floto
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Stephen A Renshaw
- Bateson Centre, University of Sheffield, Sheffield, UK; Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Sheffield, UK
| | - Laurent Kremer
- CNRS, UMR9004, Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, Montpellier, France; INSERM, IRIM, Montpellier, France.
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165
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Hoseinifar SH, Shakouri M, Doan HV, Shafiei S, Yousefi M, Raeisi M, Yousefi S, Harikrishnan R, Reverter M. Dietary supplementation of lemon verbena (Aloysia citrodora) improved immunity, immune-related genes expression and antioxidant enzymes in rainbow trout (Oncorrhyncus mykiss). FISH & SHELLFISH IMMUNOLOGY 2020; 99:379-385. [PMID: 32032763 DOI: 10.1016/j.fsi.2020.02.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 01/29/2020] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
The use of veterinary drugs for the treatments of fish diseases has often health and environmental side effects and thus alternative more sustainable strategies are needed. In this study we have explored the effect of dietary administration of lemon verbena (Aloysia citrodora) leaves powder on growth, immune parameters and antioxidant enzyme activity of rainbow trout (Oncorrhyncus myskiss). The results show that adding lemon verbena (LV) leaves powder (0.5, 1 and 2%), as feed supplement does not affect significantly rainbow trout growth, but increases the levels of some immune parameters. All enriched-diets induced an increase in the levels of lysozyme activity and total immunoglobulin in rainbow trout serum (P < 0.05), whilst 1 and 2% enriched-diets increased lysozyme and immunoglobulin in skin mucus. Expression of interleukin-1β (IL-1β) was enhanced in all fish supplemented with LV leaves powder (0.5, 1 and 2%) whilst only the diet with the highest dose (2%) induced a significantly higher expression of IL-8 and tumour necrosis factor (TNF-α). Fish fed with LV leaves powder at 1 and 2% had significantly lower expression of transforming growth factor (TGF-β, P < 0.05). Furthermore, all enriched-diets significantly increased the activity of super oxide dismutase (SOD, P < 0.05) and diets containing 1 and 2% of LV leaves powder also increased activity of glutathione-S-transferase (GST) and glutathione peroxidase (GPx). In conclusion, LV leaves powder administered as feed supplement at 2% enhances the expression of some immune-related genes (IL-1β, IL-8 and TNF- α), rises the levels of lysozyme and total immunoglobulin in serum and skin mucus and increases the activity of antioxidant enzymes (SOD, GST and GPx) in rainbow trout.
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Affiliation(s)
- Seyed Hossein Hoseinifar
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Meysam Shakouri
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand; Science and Technology Research Institute, Chiang Mai University, 239 Huay Keaw Rd., Suthep, Muang, Chiang Mai, 50200, Thailand.
| | - Shafigh Shafiei
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
| | - Morteza Yousefi
- Department of Veterinary Medicine, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Mojtaba Raeisi
- Food, Drug and Natural products health research center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Samira Yousefi
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Ramasamy Harikrishnan
- Department of Zoology, Pachaiyappa's College for Men, Kanchipuram, 631 501, Tamil Nadu, India
| | - Miriam Reverter
- Institut für Chemie und Biologie des Meeres (ICBM), Carl von Ossietzky Universität Oldenburg, Wilhelmshaven, Germany
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166
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Ibrutinib suppresses intracellular mycobacterium tuberculosis growth by inducing macrophage autophagy. J Infect 2020; 80:e19-e26. [PMID: 32171871 DOI: 10.1016/j.jinf.2020.03.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 02/08/2020] [Accepted: 03/03/2020] [Indexed: 12/26/2022]
Abstract
Tuberculosis (TB) is a major cause of morbidity and mortality worldwide. The host-directed therapy is a promising strategy for TB treatment that synergize with anti-TB treatment drugs. In this study, we found that the anti-chronic lymphocytic leukemia drug, ibrutinib, inhibited the growth of intracellular Mtb in human macrophages. Mechanisms studies showed that ibrutinib treatment significantly decreased p62 and increased LC3b proteins in Mtb infected macrophages. In addition, ibrutinib increased LC3b colocalization with intracellular Mtb and auto-lysosome fusion. Furthermore, inhibition of autophagy by using siRNA targeting ATG7 abolished the effect of ibrutinib-mediated suppression of intracellular Mtb. Next, we found that ibrutinib induced autophagy was through inhibition of BTK/Akt/mTOR pathway. Finally, we confirmed that ibrutinib treatment significantly reduced Mtb load in mediastinal node and spleen of Mtb infected mice. In conclusion, our data suggest that ibrutinib is a potential host-directed therapy candidate against TB.
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167
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Heib M, Rose-John S, Adam D. Necroptosis, ADAM proteases and intestinal (dys)function. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 353:83-152. [PMID: 32381179 DOI: 10.1016/bs.ircmb.2020.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Recently, an unexpected connection between necroptosis and members of the a disintegrin and metalloproteinase (ADAM) protease family has been reported. Necroptosis represents an important cell death routine which helps to protect from viral, bacterial, fungal and parasitic infections, maintains adult T cell homeostasis and contributes to the elimination of potentially defective organisms before parturition. Equally important for organismal homeostasis, ADAM proteases control cellular processes such as development and differentiation, immune responses or tissue regeneration. Notably, necroptosis as well as ADAM proteases have been implicated in the control of inflammatory responses in the intestine. In this review, we therefore provide an overview of the physiology and pathophysiology of necroptosis, ADAM proteases and intestinal (dys)function, discuss the contribution of necroptosis and ADAMs to intestinal (dys)function, and review the current knowledge on the role of ADAMs in necroptotic signaling.
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Affiliation(s)
- Michelle Heib
- Institut für Immunologie, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
| | - Stefan Rose-John
- Institut für Biochemie, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
| | - Dieter Adam
- Institut für Immunologie, Christian-Albrechts-Universität zu Kiel, Kiel, Germany.
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168
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Kwon JS, Park JH, Kim JY, Cha HH, Kim MJ, Chong YP, Lee SO, Choi SH, Kim YS, Woo JH, Koo YS, Jeon SB, Lee SA, Kim SH. Diagnostic Usefulness of Cytokine and Chemokine Levels in the Cerebrospinal Fluid of Patients with Suspected Tuberculous Meningitis. Am J Trop Med Hyg 2020; 101:343-349. [PMID: 31264559 DOI: 10.4269/ajtmh.18-0947] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In this study, we investigated the diagnostic utility of the cytokine profile of the cerebrospinal fluid (CSF) and enzyme-linked immunospot (ELISPOT) assays of patients with suspected tuberculous meningitis (TBM). We prospectively enrolled adult patients with suspected TBM, and CSF specimens were analyzed for 18 cytokines/chemokines and soluble programmed death protein 1 (PD-1) and programmed death ligand 1 (PD-L1). Enzyme-linked immunospot assays were performed on mononuclear cells from the CSF (CSF-MCs) and peripheral blood (PBMCs). A total of 87 patients with meningitis, including 42 TBM-suspected patients and 45 non-TBM patients, were enrolled. Excluding the 32 patients with possible TBM, 10 patients with TBM and 45 patients with non-TBM were finally analyzed. Levels of adenosine deaminase (ADA), interleukin 12 subunit β (IL-12p40), IL-13, macrophage inflammatory protein α (MIP-1α), and soluble PD-1 and PD-L1 in the CSF were significantly higher in the TBM group than in the non-TBM group (P < 0.05). The optimal cutoff values for the sensitivities and specificities of the test methods for diagnosing TBM with small samples of 10 cases of definite or probable TBM were as follows: ADA > 6.95 U/L, 70% and 81%; IL-12p40 > 52.04 pg/mL, 80% and 73%; IL-13 > 0.44 pg/mL, 90% and 47%; MIP-1α > 8.83 pg/mL, 80% and 62%; soluble PD-1 > 35.87 pg/mL, 80% and 63%; soluble PD-L1 > 24.19 pg/mL, 80% and 61%; CSF-MC ELISPOT > 13.5 spots/250,000 CSF-MC, 30% and 91%; and PBMC ELISPOT > 14 spots/250,000 PBMCs, 50% and 78%, respectively. Therefore, CSF IL-12p40, IL-13, MIP-1α, and soluble PD-1 and PD-L1 concentrations appear to be useful adjuncts for diagnosing TBM.
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Affiliation(s)
- Ji-Soo Kwon
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Joung Ha Park
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Ji Yeun Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Hye Hee Cha
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Min-Jae Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Yong Pil Chong
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Sang-Oh Lee
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Sang-Ho Choi
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Yang Soo Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jun Hee Woo
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Yong Seo Koo
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Sang-Beom Jeon
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Sang-Ahm Lee
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Sung-Han Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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169
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Young C, Walzl G, Du Plessis N. Therapeutic host-directed strategies to improve outcome in tuberculosis. Mucosal Immunol 2020; 13:190-204. [PMID: 31772320 PMCID: PMC7039813 DOI: 10.1038/s41385-019-0226-5] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 10/15/2019] [Accepted: 10/23/2019] [Indexed: 02/04/2023]
Abstract
Bacille Calmette-Guérin (BCG) is the only licenced tuberculosis (TB) vaccine, but has limited efficacy against pulmonary TB disease development and modest protection against extrapulmonary TB. Preventative antibiotic treatment for Mycobacterium tuberculosis (Mtb) infections in high-prevalence settings is unfeasible due to unclear treatment durability, drug toxicity, logistical constraints related to directly observed treatment strategy (DOTS) and the lengthy treatment protocols. Together, these factors promote non-adherence, contributing to relapse and establishment of drug-resistant Mtb strains. Although antibiotic treatment of drug-susceptible Mtb is generally effective, drug-resistant TB has a treatment efficacy below 50% and can, in a proportion, develop into progressive, untreatable disease. Other immune compromising co-infections and/or co-morbidities require more complex prevention/treatment approaches, posing huge financial burdens to national health services. Novel TB treatment strategies, such as host-directed therapeutics, are required to complement pathogen-targeted approaches. Pre-clinical studies have highlighted promising candidates that enhance endogenous pathways and/or limit destructive host responses. This review discusses promising pre-clinical candidates and forerunning compounds at advanced stages of clinical investigation in TB host-directed therapeutic (HDT) efficacy trials. Such approaches are rationalized to improve outcome in TB and shorten treatment strategies.
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Affiliation(s)
- C Young
- South African Medical Research Council, Centre for Tuberculosis Research, Department of Science and Technology/DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - G Walzl
- South African Medical Research Council, Centre for Tuberculosis Research, Department of Science and Technology/DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - N Du Plessis
- South African Medical Research Council, Centre for Tuberculosis Research, Department of Science and Technology/DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
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170
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Tezera LB, Bielecka MK, Ogongo P, Walker NF, Ellis M, Garay-Baquero DJ, Thomas K, Reichmann MT, Johnston DA, Wilkinson KA, Ahmed M, Jogai S, Jayasinghe SN, Wilkinson RJ, Mansour S, Thomas GJ, Ottensmeier CH, Leslie A, Elkington PT. Anti-PD-1 immunotherapy leads to tuberculosis reactivation via dysregulation of TNF-α. eLife 2020; 9:52668. [PMID: 32091388 PMCID: PMC7058383 DOI: 10.7554/elife.52668] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 02/19/2020] [Indexed: 12/14/2022] Open
Abstract
Previously, we developed a 3-dimensional cell culture model of human tuberculosis (TB) and demonstrated its potential to interrogate the host-pathogen interaction (Tezera et al., 2017a). Here, we use the model to investigate mechanisms whereby immune checkpoint therapy for cancer paradoxically activates TB infection. In patients, PD-1 is expressed in Mycobacterium tuberculosis (Mtb)-infected lung tissue but is absent in areas of immunopathology. In the microsphere model, PD-1 ligands are up-regulated by infection, and the PD-1/PD-L1 axis is further induced by hypoxia. Inhibition of PD-1 signalling increases Mtb growth, and augments cytokine secretion. TNF-α is responsible for accelerated Mtb growth, and TNF-α neutralisation reverses augmented Mtb growth caused by anti-PD-1 treatment. In human TB, pulmonary TNF-α immunoreactivity is increased and circulating PD-1 expression negatively correlates with sputum TNF-α concentrations. Together, our findings demonstrate that PD-1 regulates the immune response in TB, and inhibition of PD-1 accelerates Mtb growth via excessive TNF-α secretion.
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Affiliation(s)
- Liku B Tezera
- NIHR Biomedical Research Centre, School of Clinical and Experimental Sciences, Faculty of Medicine, University of SouthamptonSouthamptonUnited Kingdom
- Institute for Life Sciences, University of SouthamptonSouthamptonUnited Kingdom
| | - Magdalena K Bielecka
- NIHR Biomedical Research Centre, School of Clinical and Experimental Sciences, Faculty of Medicine, University of SouthamptonSouthamptonUnited Kingdom
| | - Paul Ogongo
- Africa Health Research InstituteKwaZulu NatalSouth Africa
- Department of Tropical and Infectious Diseases, Institute of Primate Research, National Museums of KenyaNairobiKenya
| | - Naomi F Walker
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape TownCape TownSouth Africa
- TB Centre and Department of Clinical Research, London School of Hygiene and Tropical MedicineLondonUnited Kingdom
- Department of Clinical Sciences, Liverpool School of Tropical MedicineLiverpoolUnited Kingdom
| | - Matthew Ellis
- NIHR Biomedical Research Centre, School of Cancer Sciences, University of SouthamptonSouthamptonUnited Kingdom
| | - Diana J Garay-Baquero
- NIHR Biomedical Research Centre, School of Clinical and Experimental Sciences, Faculty of Medicine, University of SouthamptonSouthamptonUnited Kingdom
- Institute for Life Sciences, University of SouthamptonSouthamptonUnited Kingdom
| | - Kristian Thomas
- NIHR Biomedical Research Centre, School of Clinical and Experimental Sciences, Faculty of Medicine, University of SouthamptonSouthamptonUnited Kingdom
| | - Michaela T Reichmann
- NIHR Biomedical Research Centre, School of Clinical and Experimental Sciences, Faculty of Medicine, University of SouthamptonSouthamptonUnited Kingdom
| | - David A Johnston
- NIHR Biomedical Research Centre, School of Clinical and Experimental Sciences, Faculty of Medicine, University of SouthamptonSouthamptonUnited Kingdom
| | | | - Mohamed Ahmed
- Africa Health Research InstituteKwaZulu NatalSouth Africa
| | - Sanjay Jogai
- NIHR Biomedical Research Centre, School of Clinical and Experimental Sciences, Faculty of Medicine, University of SouthamptonSouthamptonUnited Kingdom
| | - Suwan N Jayasinghe
- BioPhysics Group, Department of Mechanical Engineering, University College LondonLondonUnited Kingdom
| | - Robert J Wilkinson
- The Francis Crick InstituteLondonUnited Kingdom
- Department of Infectious Diseases, Imperial College LondonLondonUnited Kingdom
| | - Salah Mansour
- NIHR Biomedical Research Centre, School of Clinical and Experimental Sciences, Faculty of Medicine, University of SouthamptonSouthamptonUnited Kingdom
- Institute for Life Sciences, University of SouthamptonSouthamptonUnited Kingdom
| | - Gareth J Thomas
- NIHR Biomedical Research Centre, School of Cancer Sciences, University of SouthamptonSouthamptonUnited Kingdom
| | - Christian H Ottensmeier
- NIHR Biomedical Research Centre, School of Cancer Sciences, University of SouthamptonSouthamptonUnited Kingdom
| | - Alasdair Leslie
- Africa Health Research InstituteKwaZulu NatalSouth Africa
- Department of Infection and Immunity, University College LondonLondonUnited Kingdom
| | - Paul T Elkington
- NIHR Biomedical Research Centre, School of Clinical and Experimental Sciences, Faculty of Medicine, University of SouthamptonSouthamptonUnited Kingdom
- Institute for Life Sciences, University of SouthamptonSouthamptonUnited Kingdom
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171
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FitzSimons M, Beauchemin M, Smith AM, Stroh EG, Kelpsch DJ, Lamb MC, Tootle TL, Yin VP. Cardiac injury modulates critical components of prostaglandin E 2 signaling during zebrafish heart regeneration. Sci Rep 2020; 10:3095. [PMID: 32080283 PMCID: PMC7033201 DOI: 10.1038/s41598-020-59868-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 01/31/2020] [Indexed: 12/14/2022] Open
Abstract
The inability to effectively stimulate cardiomyocyte proliferation remains a principle barrier to regeneration in the adult human heart. A tightly regulated, acute inflammatory response mediated by a range of cell types is required to initiate regenerative processes. Prostaglandin E2 (PGE2), a potent lipid signaling molecule induced by inflammation, has been shown to promote regeneration and cell proliferation; however, the dynamics of PGE2 signaling in the context of heart regeneration remain underexplored. Here, we employ the regeneration-competent zebrafish to characterize components of the PGE2 signaling circuit following cardiac injury. In the regenerating adult heart, we documented an increase in PGE2 levels, concurrent with upregulation of cox2a and ptges, two genes critical for PGE2 synthesis. Furthermore, we identified the epicardium as the most prominent site for cox2a expression, thereby suggesting a role for this tissue as an inflammatory mediator. Injury also drove the opposing expression of PGE2 receptors, upregulating pro-restorative ptger2a and downregulating the opposing receptor ptger3. Importantly, treatment with pharmacological inhibitors of Cox2 activity suppressed both production of PGE2, and the proliferation of cardiomyocytes. These results suggest that injury-induced PGE2 signaling is key to stimulating cardiomyocyte proliferation during regeneration.
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Affiliation(s)
- MaryLynn FitzSimons
- Kathryn W. Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Bar Harbor, ME, 04609, US.,Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, 04469, US
| | - Megan Beauchemin
- Kathryn W. Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Bar Harbor, ME, 04609, US.,Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, 04469, US.,The University of New England, Biddeford, ME, 04005, US
| | - Ashley M Smith
- Kathryn W. Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Bar Harbor, ME, 04609, US
| | - Erika G Stroh
- Kathryn W. Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Bar Harbor, ME, 04609, US
| | - Daniel J Kelpsch
- Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, Iowa, 52242, US.,Department of Embryology, Carnegie Institution for Science, Baltimore, MD, 21218, US
| | - Maureen C Lamb
- Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, Iowa, 52242, US
| | - Tina L Tootle
- Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, Iowa, 52242, US
| | - Viravuth P Yin
- Kathryn W. Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Bar Harbor, ME, 04609, US. .,Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, 04469, US.
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172
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Mycobacterium tuberculosis pathogenicity viewed through the lens of molecular Koch's postulates. Curr Opin Microbiol 2020; 54:103-110. [PMID: 32062573 DOI: 10.1016/j.mib.2020.01.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 01/14/2020] [Indexed: 01/12/2023]
Abstract
Thirty years ago Stanley Falkow formulated molecular Koch's postulates as a framework to help dissect the contribution of microbial genes to their pathogenicity (Box 1). Three years later, his advice led me to develop Mycobacterium marinum, a close genetic relative of Mycobacterium tuberculosis, as a model for tuberculosis pathogenesis. Here, I discuss insights into M. tuberculosis pathogenicity from studying M. marinum in the zebrafish, and frame them in terms of molecular Koch's postulates. The highly orchestrated life cycle of M. tuberculosis is achieved in substantial measure not by "traditional" pathogen-exclusive virulence genes acquired along its evolutionary history, but rather by genes that are shared with its environmental ancestors. Together, these genes support its tactics of subterfuge and exploitation to overcome host immunity so as to produce the transmissible disease that ensures the evolutionary survival of this obligate human pathogen.
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173
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Coppola M, Villar-Hernández R, van Meijgaarden KE, Latorre I, Muriel Moreno B, Garcia-Garcia E, Franken KLMC, Prat C, Stojanovic Z, De Souza Galvão ML, Millet JP, Sabriá J, Sánchez-Montalva A, Noguera-Julian A, Geluk A, Domínguez J, Ottenhoff THM. Cell-Mediated Immune Responses to in vivo-Expressed and Stage-Specific Mycobacterium tuberculosis Antigens in Latent and Active Tuberculosis Across Different Age Groups. Front Immunol 2020; 11:103. [PMID: 32117257 PMCID: PMC7026259 DOI: 10.3389/fimmu.2020.00103] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 01/15/2020] [Indexed: 12/12/2022] Open
Abstract
A quarter of the global human population is estimated to be latently infected by Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB). TB remains the global leading cause of death by a single pathogen and ranks among the top-10 causes of overall global mortality. Current immunodiagnostic tests cannot discriminate between latent, active and past TB, nor predict progression of latent infection to active disease. The only registered TB vaccine, Bacillus Calmette-Guérin (BCG), does not adequately prevent pulmonary TB in adolescents and adults, thus permitting continued TB-transmission. Several Mtb proteins, mostly discovered through IFN-γ centered approaches, have been proposed as targets for new TB-diagnostic tests or -vaccines. Recently, however, we identified novel Mtb antigens capable of eliciting multiple cytokines, including antigens that did not induce IFN-γ but several other cytokines. These antigens had been selected based on high Mtb gene-expression in the lung in vivo, and have been termed in vivo expressed (IVE-TB) antigens. Here, we extend and validate our previous findings in an independent Southern European cohort, consisting of adults and adolescents with either LTBI or TB. Our results confirm that responses to IVE-TB antigens, and also DosR-regulon and Rpf stage-specific Mtb antigens are marked by multiple cytokines, including strong responses, such as for TNF-α, in the absence of detectable IFN-γ production. Except for TNF-α, the magnitude of those responses were significantly higher in LTBI subjects. Additional unbiased analyses of high dimensional flow-cytometry data revealed that TNF-α+ cells responding to Mtb antigens comprised 17 highly heterogeneous cell types. Among these 17 TNF-α+ cells clusters identified, those with CD8+TEMRA or CD8+CD4+ phenotypes, defined by the expression of multiple intracellular markers, were the most prominent in adult LTBI, while CD14+ TNF-α+ myeloid-like clusters were mostly abundant in adolescent LTBI. Our findings, although limited to a small cohort, stress the importance of assessing broader immune responses than IFN-γ alone in Mtb antigen discovery as well as the importance of screening individuals of different age groups. In addition, our results provide proof of concept showing how unbiased multidimensional multiparametric cell subset analysis can identify unanticipated blood cell subsets that could play a role in the immune response against Mtb.
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Affiliation(s)
- Mariateresa Coppola
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | - Raquel Villar-Hernández
- Institut d'Investigació Germans Trias i Pujol, CIBER Enfermedades Respiratorias, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Irene Latorre
- Institut d'Investigació Germans Trias i Pujol, CIBER Enfermedades Respiratorias, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Beatriz Muriel Moreno
- Institut d'Investigació Germans Trias i Pujol, CIBER Enfermedades Respiratorias, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Esther Garcia-Garcia
- Institut d'Investigació Germans Trias i Pujol, CIBER Enfermedades Respiratorias, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Kees L M C Franken
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | - Cristina Prat
- Institut d'Investigació Germans Trias i Pujol, CIBER Enfermedades Respiratorias, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Zoran Stojanovic
- Servei de Neumología Hospital Universitari Germans Trias i Pujol, Institut d'Investigació Germans Trias i Pujol, CIBER Enfermedades Respiratorias, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Joan-Pau Millet
- Serveis Clínics, Unitat Clínica de Tractament Directament Observat de la Tuberculosi, CIBER de Epidemiología y Salud Pública (CIBEREESP), Madrid, Spain
| | - Josefina Sabriá
- Servei de Pneumologia, Hospital Sant Joan Despí Moises Broggi, Sant Joan Despí, Spain
| | - Adrián Sánchez-Montalva
- Infectious Diseases Department, Vall d'Hebron University Hospital, PROSICS Barcelona, Universitat Autònoma de Barcelona, Barcelona, Spain.,Grupo de Estudio de Micobacterias (GEIM), Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
| | - Antoni Noguera-Julian
- Malalties Infeccioses i Resposta Inflamatòria Sistèmica en Pediatria, Unitat d'Infeccions, Servei de Pediatria, Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Annemieke Geluk
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | - Jose Domínguez
- Institut d'Investigació Germans Trias i Pujol, CIBER Enfermedades Respiratorias, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Tom H M Ottenhoff
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
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174
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Guzman G, Niekamp P, Tafesse FG. The Squeaky Yeast Gets Greased: The Roles of Host Lipids in the Clearance of Pathogenic Fungi. J Fungi (Basel) 2020; 6:E19. [PMID: 32024011 PMCID: PMC7151219 DOI: 10.3390/jof6010019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/21/2020] [Accepted: 01/26/2020] [Indexed: 02/07/2023] Open
Abstract
Fungal infections remain a global health threat with high morbidity and mortality. The human immune system must, therefore, perpetually defend against invasive fungal infections. Phagocytosis is critical for the clearance of fungal pathogens, as this cellular process allows select immune cells to internalize and destroy invading fungal cells. While much is known about the protein players that enable phagocytosis, the various roles that lipids play during this fundamental innate immune process are still being illuminated. In this review, we describe recent discoveries that shed new light on the mechanisms by which host lipids enable the phagocytic uptake and clearance of fungal pathogens.
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Affiliation(s)
- Gaelen Guzman
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR 97239, USA; (G.G.); (P.N.)
| | - Patrick Niekamp
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR 97239, USA; (G.G.); (P.N.)
- Biology & Chemistry Department, University of Osnabrück, Fachbereich Biologie/Chemie, Barbarastrasse 13, 49076 Osnabrück, Germany
| | - Fikadu Geta Tafesse
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR 97239, USA; (G.G.); (P.N.)
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175
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Potential role of adjuvant drugs on efficacy of first line oral antitubercular therapy: Drug repurposing. Tuberculosis (Edinb) 2020; 120:101902. [DOI: 10.1016/j.tube.2020.101902] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 01/08/2020] [Accepted: 01/09/2020] [Indexed: 12/11/2022]
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176
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Torraca V, Kaforou M, Watson J, Duggan GM, Guerrero-Gutierrez H, Krokowski S, Hollinshead M, Clarke TB, Mostowy RJ, Tomlinson GS, Sancho-Shimizu V, Clements A, Mostowy S. Shigella sonnei infection of zebrafish reveals that O-antigen mediates neutrophil tolerance and dysentery incidence. PLoS Pathog 2019; 15:e1008006. [PMID: 31830135 PMCID: PMC6980646 DOI: 10.1371/journal.ppat.1008006] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 01/24/2020] [Accepted: 11/01/2019] [Indexed: 01/03/2023] Open
Abstract
Shigella flexneri is historically regarded as the primary agent of bacillary dysentery, yet the closely-related Shigella sonnei is replacing S. flexneri, especially in developing countries. The underlying reasons for this dramatic shift are mostly unknown. Using a zebrafish (Danio rerio) model of Shigella infection, we discover that S. sonnei is more virulent than S. flexneri in vivo. Whole animal dual-RNAseq and testing of bacterial mutants suggest that S. sonnei virulence depends on its O-antigen oligosaccharide (which is unique among Shigella species). We show in vivo using zebrafish and ex vivo using human neutrophils that S. sonnei O-antigen can mediate neutrophil tolerance. Consistent with this, we demonstrate that O-antigen enables S. sonnei to resist phagolysosome acidification and promotes neutrophil cell death. Chemical inhibition or promotion of phagolysosome maturation respectively decreases and increases neutrophil control of S. sonnei and zebrafish survival. Strikingly, larvae primed with a sublethal dose of S. sonnei are protected against a secondary lethal dose of S. sonnei in an O-antigen-dependent manner, indicating that exposure to O-antigen can train the innate immune system against S. sonnei. Collectively, these findings reveal O-antigen as an important therapeutic target against bacillary dysentery, and may explain the rapidly increasing S. sonnei burden in developing countries. Shigella sonnei is predominantly responsible for dysentery in developed countries, and is replacing Shigella flexneri in areas undergoing economic development and improvements in water quality. Using Shigella infection of zebrafish (in vivo) and human neutrophils (in vitro), we discover that S. sonnei is more virulent than S. flexneri because of neutrophil tolerance mediated by its O-antigen oligosaccharide acquired from the environmental bacteria Plesiomonas shigelloides. To inspire new approaches for S. sonnei control, we show that increased phagolysosomal acidification or innate immune training can promote S. sonnei clearance by neutrophils in vivo. These findings have major implications for our evolutionary understanding of Shigella, and may explain why exposure to P. shigelloides in low and middle-income countries (LMICs) can protect against dysentery incidence.
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Affiliation(s)
- Vincenzo Torraca
- Section of Microbiology, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
- Department of Infection Biology, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Myrsini Kaforou
- Department of Paediatrics, Division of Medicine, Imperial College London, London, United Kingdom
| | - Jayne Watson
- Faculty of Natural Sciences, Department of Life Sciences, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
| | - Gina M. Duggan
- Section of Microbiology, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
- Department of Infection Biology, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Hazel Guerrero-Gutierrez
- Section of Microbiology, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
| | - Sina Krokowski
- Section of Microbiology, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
- Department of Infection Biology, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Michael Hollinshead
- Division of Virology, Department of Pathology, Cambridge University, Cambridge, United Kingdom
| | - Thomas B. Clarke
- Section of Microbiology, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
| | - Rafal J. Mostowy
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
- Faculty of Medicine, School of Public Health, Imperial College London, London, United Kingdom
| | - Gillian S. Tomlinson
- Division of Infection and Immunity, University College London, London, United Kingdom
| | - Vanessa Sancho-Shimizu
- Department of Paediatrics, Division of Medicine, Imperial College London, London, United Kingdom
- Department of Virology, Division of Medicine, Imperial College London, London, United Kingdom
| | - Abigail Clements
- Faculty of Natural Sciences, Department of Life Sciences, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
| | - Serge Mostowy
- Section of Microbiology, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
- Department of Infection Biology, London School of Hygiene & Tropical Medicine, London, United Kingdom
- * E-mail:
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177
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ROS and diseases: role in metabolism and energy supply. Mol Cell Biochem 2019; 467:1-12. [PMID: 31813106 PMCID: PMC7089381 DOI: 10.1007/s11010-019-03667-9] [Citation(s) in RCA: 283] [Impact Index Per Article: 56.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 11/30/2019] [Indexed: 02/07/2023]
Abstract
Researches dedicated to reactive oxygen species (ROS) had been performed for decades, yet the outcomes remain controversial. With the relentless effort of studies, researchers have explored the role of ROS in biosystem and various diseases. ROS are beneficial for biosystem presenting as signalling molecules and enhancing immunologic defence. However, they also have harmful effects such as causing tissue and organ damages. The results are controversial in studies focusing on ROS and ROS-related diseases by regulating ROS with inhibitors or promotors. These competing results hindered the process for further investigation of the specific mechanisms lying behind. The opinions presented in this review interpret the researches of ROS from a different dimension that might explain the competing results of ROS introduced so far from a broader perspective. This review brings a different thinking to researchers, with the neglected features and potentials of ROS, to relate their works with ROS and to explore the mechanisms between their subject and ROS.
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178
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Krause K, Daily K, Estfanous S, Hamilton K, Badr A, Abu Khweek A, Hegazi R, Anne MNK, Klamer B, Zhang X, Gavrilin MA, Pancholi V, Amer AO. Caspase-11 counteracts mitochondrial ROS-mediated clearance of Staphylococcus aureus in macrophages. EMBO Rep 2019; 20:e48109. [PMID: 31637841 PMCID: PMC6893291 DOI: 10.15252/embr.201948109] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 09/16/2019] [Accepted: 09/25/2019] [Indexed: 02/05/2023] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a growing health concern due to increasing resistance to antibiotics. As a facultative intracellular pathogen, MRSA is capable of persisting within professional phagocytes including macrophages. Here, we identify a role for CASP11 in facilitating MRSA survival within murine macrophages. We show that MRSA actively prevents the recruitment of mitochondria to the vicinity of the vacuoles they reside in to avoid intracellular demise. This process requires CASP11 since its deficiency allows increased association of MRSA-containing vacuoles with mitochondria. The induction of mitochondrial superoxide by antimycin A (Ant A) improves MRSA eradication in casp11-/- cells, where mitochondria remain in the vicinity of the bacterium. In WT macrophages, Ant A does not affect MRSA persistence. When mitochondrial dissociation is prevented by the actin depolymerizing agent cytochalasin D, Ant A effectively reduces MRSA numbers. Moreover, the absence of CASP11 leads to reduced cleavage of CASP1, IL-1β, and CASP7, as well as to reduced production of CXCL1/KC. Our study provides a new role for CASP11 in promoting the persistence of Gram-positive bacteria.
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Affiliation(s)
- Kathrin Krause
- Department of Microbial Infection and ImmunityInfectious Diseases InstituteOhio State UniversityColumbusOHUSA
| | - Kylene Daily
- Department of Microbial Infection and ImmunityInfectious Diseases InstituteOhio State UniversityColumbusOHUSA
| | - Shady Estfanous
- Department of Microbial Infection and ImmunityInfectious Diseases InstituteOhio State UniversityColumbusOHUSA
| | - Kaitlin Hamilton
- Department of Microbial Infection and ImmunityInfectious Diseases InstituteOhio State UniversityColumbusOHUSA
| | - Asmaa Badr
- Department of Microbial Infection and ImmunityInfectious Diseases InstituteOhio State UniversityColumbusOHUSA
| | - Arwa Abu Khweek
- Department of Microbial Infection and ImmunityInfectious Diseases InstituteOhio State UniversityColumbusOHUSA
- Department of Biology and BiochemistryBirzeit UniversityBirzeitWest BankPalestine
| | - Rana Hegazi
- Department of Microbial Infection and ImmunityInfectious Diseases InstituteOhio State UniversityColumbusOHUSA
| | - Midhun NK Anne
- Department of Microbial Infection and ImmunityInfectious Diseases InstituteOhio State UniversityColumbusOHUSA
| | - Brett Klamer
- Center for BiostatisticsOhio State UniversityColumbusOHUSA
| | - Xiaoli Zhang
- Center for BiostatisticsOhio State UniversityColumbusOHUSA
| | | | - Vijay Pancholi
- Department of PathologyOhio State UniversityColumbusOHUSA
| | - Amal O Amer
- Department of Microbial Infection and ImmunityInfectious Diseases InstituteOhio State UniversityColumbusOHUSA
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179
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Geng L, Zhang G, Yao M, Fang Y. Rip 1-dependent endothelial necroptosis participates in ischemia-reperfusion injury of mouse flap. J Dermatol Sci 2019; 97:30-40. [PMID: 31831282 DOI: 10.1016/j.jdermsci.2019.11.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 11/21/2019] [Accepted: 11/24/2019] [Indexed: 11/25/2022]
Abstract
BACKGROUND Ischemia reperfusion injury plays an important role in free flap necrosis. However, the detailed mechanism is not clear, and effective methods for improving the survival rate of skin flap are still lacking. OBJECTIVE To investigate the regulation and functional link between necroptosis and ischemia-reperfusion injury of mouse flap. METHODS We established a mouse ischemia-reperfusion injury flap model and a cell Oxygen Glucose Deprivation (OGD) model intervened with Necrostatin-1. The mouse flap tissues were harvested in vivo for histological immunofluorescence analysis and western blotting analyses. The HUVECs cells with various treatments in vitro were assessed by using Transwell assay, tube formation assay, cell counting kit-8 analysis and flow cytometry. A Rip3-knockout cell line and a TNFR1-knockout cell line were generated from HUVEC cells using the CRISPR-Cas9 technology and were subsequently used to explore the related mechanisms. RESULTS The expression of p-Rip3 is positive in both mouse and cell culture models. When necroptosis is completely or partially inhibited in vivo, damaged tissues are repaired with better efficiency. The cells treated with Necrostatin-1 in vitro exhibit faster migration, proliferation and better tube formation. Deficiency of TNFR1 can block the necroptosis pathway by blocking the phosphorylation of Rip3 in HUVEC OGD/ROG model. Meanwhile, the levels of APJ, HIF-1α, and VEGF are reduced when necroptosis is inhibited by Necrostatin-1. CONCLUSION TNFR1 mediates Rip1/Rip3 in ischemia-reperfusion injury. Inhibition of necroptosis attenuates the ischemia-reperfusion injury of flap and may enhance hypoxic tolerance of HUVECs and vascular homeostasis through regulation of the HIF-1α signaling pathways.
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Affiliation(s)
- Lele Geng
- Department of Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Gai Zhang
- Department of Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Min Yao
- Department of Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yong Fang
- Department of Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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180
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Faust H, Mangalmurti NS. Collateral damage: necroptosis in the development of lung injury. Am J Physiol Lung Cell Mol Physiol 2019; 318:L215-L225. [PMID: 31774305 DOI: 10.1152/ajplung.00065.2019] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Cell death is increasingly recognized as a driving factor in the development of acute lung injury. Necroptosis, an immunogenic regulated cell death program important in innate immunity, has been implicated in the development of lung injury in a diverse range of conditions. Characterized by lytic cell death and consequent extracellular release of endogenous inflammatory mediators, necroptosis can be both beneficial and deleterious to the host, depending on the context. Here, we review recent investigations linking necroptosis and the development of experimental lung injury. We assess the consequences of necroptosis during bacterial pneumonia, viral infection, sepsis, and sterile injury, highlighting increasing evidence from in vitro studies, animal models, and clinical studies that implicates necroptosis in the pathogenesis of ARDS. Lastly, we highlight current challenges in translating laboratory findings to the bedside.
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Affiliation(s)
- Hilary Faust
- Allergy, Pulmonary, and Critical Care Division, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Nilam S Mangalmurti
- Pulmonary, Allergy, and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.,Lung Biology Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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181
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Molnár T, Mázló A, Tslaf V, Szöllősi AG, Emri G, Koncz G. Current translational potential and underlying molecular mechanisms of necroptosis. Cell Death Dis 2019; 10:860. [PMID: 31719524 PMCID: PMC6851151 DOI: 10.1038/s41419-019-2094-z] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 10/22/2019] [Accepted: 10/24/2019] [Indexed: 12/27/2022]
Abstract
Cell death has a fundamental impact on the evolution of degenerative disorders, autoimmune processes, inflammatory diseases, tumor formation and immune surveillance. Over the past couple of decades extensive studies have uncovered novel cell death pathways, which are independent of apoptosis. Among these is necroptosis, a tightly regulated, inflammatory form of cell death. Necroptosis contribute to the pathogenesis of many diseases and in this review, we will focus exclusively on necroptosis in humans. Necroptosis is considered a backup mechanism of apoptosis, but the in vivo appearance of necroptosis indicates that both caspase-mediated and caspase-independent mechanisms control necroptosis. Necroptosis is regulated on multiple levels, from the transcription, to the stability and posttranslational modifications of the necrosome components, to the availability of molecular interaction partners and the localization of receptor-interacting serine/threonine-protein kinase 1 (RIPK1), receptor-interacting serine/threonine-protein kinase 3 (RIPK3) and mixed lineage kinase domain-like protein (MLKL). Accordingly, we classified the role of more than seventy molecules in necroptotic signaling based on consistent in vitro or in vivo evidence to understand the molecular background of necroptosis and to find opportunities where regulating the intensity and the modality of cell death could be exploited in clinical interventions. Necroptosis specific inhibitors are under development, but >20 drugs, already used in the treatment of various diseases, have the potential to regulate necroptosis. By listing necroptosis-modulated human diseases and cataloging the currently available drug-repertoire to modify necroptosis intensity, we hope to kick-start approaches with immediate translational potential. We also indicate where necroptosis regulating capacity should be considered in the current applications of these drugs.
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Affiliation(s)
- Tamás Molnár
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Doctoral School of Molecular Cellular and Immune Biology, University of Debrecen, Debrecen, Hungary
| | - Anett Mázló
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Doctoral School of Molecular Cellular and Immune Biology, University of Debrecen, Debrecen, Hungary.,MTA-DE Cell Biology and Signaling Research Group, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
| | - Vera Tslaf
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Attila Gábor Szöllősi
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gabriella Emri
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gábor Koncz
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.
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182
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Chen M, Luo Y, Xu J, Chang MX, Liu JX. Copper Regulates the Susceptibility of Zebrafish Larvae to Inflammatory Stimuli by Controlling Neutrophil/Macrophage Survival. Front Immunol 2019; 10:2599. [PMID: 31787979 PMCID: PMC6856049 DOI: 10.3389/fimmu.2019.02599] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 10/21/2019] [Indexed: 11/21/2022] Open
Abstract
Copper has been revealed to negatively affect the hematopoietic system, which has an important function in immune pathogen defense, but little is known about the potential mechanism. In this study, copper-stressed larvae exhibited significantly increased mortality as well as reduced percentages of GFP-labeled macrophages and neutrophils after Aeromonas hydrophila (A. hydrophila) infection. However, those copper-stressed GFP-labeled macrophages and neutrophils showed more rapid responses to A. hydrophila infection. The transcriptional profiles in copper-stressed macrophages or neutrophils were unveiled by RNA-Sequencing, and KEGG pathway analysis revealed enrichment of differentially expressed genes (DEGs) in lysosome, apoptosis, oxidative phosphorylation, phagosome, etc. The copper-stressed macrophages or neutrophils were revealed to have an increase in reactive oxygen species (ROS) and mitochondria ROS (mROS)-mediated apoptosis, and a reduction in phagocytosis. Furthermore, the A. hydrophila-infected copper-stressed macrophages or neutrophils were found to be unable to maintain a consistently increased expression in immune responsive genes. This study demonstrated for the first time that copper might induce the susceptibility of fish larvae to inflammatory stimuli via triggering macrophage or neutrophil apoptosis, leading to reduced phagocytic activities and non-sustainable immune responses in immune macrophages or neutrophils.
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Affiliation(s)
- MingYue Chen
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Yi Luo
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - JiangPing Xu
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Ming-Xian Chang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Jing-Xia Liu
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China
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183
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NAD + Depletion Triggers Macrophage Necroptosis, a Cell Death Pathway Exploited by Mycobacterium tuberculosis. Cell Rep 2019; 24:429-440. [PMID: 29996103 DOI: 10.1016/j.celrep.2018.06.042] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 05/05/2018] [Accepted: 06/08/2018] [Indexed: 12/19/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) kills infected macrophages by inhibiting apoptosis and promoting necrosis. The tuberculosis necrotizing toxin (TNT) is a secreted nicotinamide adenine dinucleotide (NAD+) glycohydrolase that induces necrosis in infected macrophages. Here, we show that NAD+ depletion by TNT activates RIPK3 and MLKL, key mediators of necroptosis. Notably, Mtb bypasses the canonical necroptosis pathway since neither TNF-α nor RIPK1 are required for macrophage death. Macrophage necroptosis is associated with depolarized mitochondria and impaired ATP synthesis, known hallmarks of Mtb-induced cell death. These results identify TNT as the main trigger of necroptosis in Mtb-infected macrophages. Surprisingly, NAD+ depletion itself was sufficient to trigger necroptosis in a RIPK3- and MLKL-dependent manner by inhibiting the NAD+ salvage pathway in THP-1 cells or by TNT expression in Jurkat T cells. These findings suggest avenues for host-directed therapies to treat tuberculosis and other infectious and age-related diseases in which NAD+ deficiency is a pathological factor.
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184
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Shlomovitz I, Speir M, Gerlic M. Flipping the dogma - phosphatidylserine in non-apoptotic cell death. Cell Commun Signal 2019; 17:139. [PMID: 31665027 PMCID: PMC6819419 DOI: 10.1186/s12964-019-0437-0] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/10/2019] [Indexed: 12/18/2022] Open
Abstract
The exposure of phosphatidylserine (PS) on the outer plasma membrane has long been considered a unique feature of apoptotic cells. Together with other "eat me" signals, it enables the recognition and phagocytosis of dying cells (efferocytosis), helping to explain the immunologically-silent nature of apoptosis. Recently, however, PS exposure has also been reported in non-apoptotic forms of regulated inflammatory cell death, such as necroptosis, challenging previous dogma. In this review, we outline the evidence for PS exposure in non-apoptotic cells and extracellular vesicles (EVs), and discuss possible mechanisms based on our knowledge of apoptotic-PS exposure. In addition, we examine the outcomes of non-apoptotic PS exposure, including the reversibility of cell death, efferocytosis, and consequent inflammation. By examining PS biology, we challenge the established approach of distinguishing apoptosis from other cell death pathways by AnnexinV staining of PS externalization. Finally, we re-evaluate how PS exposure is thought to define apoptosis as an immunologically silent process distinct from other non-apoptotic and inflammatory cell death pathways. Ultimately, we suggest that a complete understanding of how regulated cell death processes affect the immune system is far from being fully elucidated.
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Affiliation(s)
- Inbar Shlomovitz
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mary Speir
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC 3168 Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC 3800 Australia
| | - Motti Gerlic
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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185
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Pajuelo D, Gonzalez-Juarbe N, Niederweis M. NAD hydrolysis by the tuberculosis necrotizing toxin induces lethal oxidative stress in macrophages. Cell Microbiol 2019; 22:e13115. [PMID: 31509891 DOI: 10.1111/cmi.13115] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 09/06/2019] [Accepted: 09/09/2019] [Indexed: 12/26/2022]
Abstract
Mycobacterium tuberculosis (Mtb) kills infected macrophages through necroptosis, a programmed cell death that enhances mycobacterial replication and dissemination. The tuberculosis necrotizing toxin (TNT) is the major cytotoxicity factor of Mtb in macrophages and induces necroptosis by NAD+ hydrolysis. Here, we show that the catalytic activity of TNT triggers the production of reactive oxygen species (ROS) in Mtb-infected macrophages causing cell death and promoting mycobacterial replication. TNT induces ROS formation both by activating necroptosis and by a necroptosis-independent mechanism. Most of the detected ROS originate in mitochondria as a consequence of opening the mitochondrial permeability transition pore. However, a significant part of ROS is produced by mechanisms independent of TNT and necroptosis. Expressing only the tnt gene in Jurkat T-cells also induces lethal ROS formation indicating that these molecular mechanisms are not restricted to macrophages. Both the antioxidant N-acetyl-cysteine and replenishment of NAD+ by providing nicotinamide reduce ROS levels in Mtb-infected macrophages, protect them from cell death, and restrict mycobacterial replication. Our results indicate that a host-directed therapy combining replenishment of NAD+ with inhibition of necroptosis and/or antioxidants might improve the health status of TB patients and augment antibacterial TB chemotherapy.
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Affiliation(s)
- David Pajuelo
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Norberto Gonzalez-Juarbe
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, USA.,Infectious Diseases and Genomic Medicine Group, J. Craig Venter Institute (JCVI), Rockville, MD, USA
| | - Michael Niederweis
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, USA
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186
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Sommer F, Torraca V, Kamel SM, Lombardi A, Meijer AH. Frontline Science: Antagonism between regular and atypical Cxcr3 receptors regulates macrophage migration during infection and injury in zebrafish. J Leukoc Biol 2019; 107:185-203. [PMID: 31529512 PMCID: PMC7028096 DOI: 10.1002/jlb.2hi0119-006r] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 07/11/2019] [Accepted: 09/04/2019] [Indexed: 12/17/2022] Open
Abstract
The CXCR3‐CXCL11 chemokine‐signaling axis plays an essential role in infection and inflammation by orchestrating leukocyte trafficking in human and animal models, including zebrafish. Atypical chemokine receptors (ACKRs) play a fundamental regulatory function in signaling networks by shaping chemokine gradients through their ligand scavenging function, while being unable to signal in the classic G‐protein‐dependent manner. Two copies of the CXCR3 gene in zebrafish, cxcr3.2 and cxcr3.3, are expressed on macrophages and share a highly conserved ligand‐binding site. However, Cxcr3.3 has structural characteristics of ACKRs indicative of a ligand‐scavenging role. In contrast, we previously showed that Cxcr3.2 is an active CXCR3 receptor because it is required for macrophage motility and recruitment to sites of mycobacterial infection. In this study, we generated a cxcr3.3 CRISPR‐mutant to functionally dissect the antagonistic interplay among the cxcr3 paralogs in the immune response. We observed that cxcr3.3 mutants are more susceptible to mycobacterial infection, whereas cxcr3.2 mutants are more resistant. Furthermore, macrophages in the cxcr3.3 mutant are more motile, show higher activation status, and are recruited more efficiently to sites of infection or injury. Our results suggest that Cxcr3.3 is an ACKR that regulates the activity of Cxcr3.2 by scavenging common ligands and that silencing the scavenging function of Cxcr3.3 results in an exacerbated Cxcr3.2 signaling. In human, splice variants of CXCR3 have antagonistic functions and CXCR3 ligands also interact with ACKRs. Therefore, in zebrafish, an analogous regulatory mechanism appears to have evolved after the cxcr3 gene duplication event, through diversification of conventional and atypical receptor variants.
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Affiliation(s)
- Frida Sommer
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands
| | - Vincenzo Torraca
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands
| | - Sarah M Kamel
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands
| | - Amber Lombardi
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands
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187
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Regulation of HMGB1 release protects chemoradiotherapy-associated mucositis. Mucosal Immunol 2019; 12:1070-1081. [PMID: 30647411 DOI: 10.1038/s41385-019-0132-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 11/28/2018] [Accepted: 12/31/2018] [Indexed: 02/04/2023]
Abstract
Oral mucositis (OM) is a common complication in cancer patients undergoing anticancer treatment. Despite the clinical and economic consequences of OM, there are no drugs available for its fundamental control. Here we show that high-mobility group box 1 (HMGB1), a "danger signal" that acts as a potent innate immune mediator, plays a critical role in the pathogenesis of OM. In addition, we investigated treatment of OM through HMGB1 blockade using NecroX-7 (tetrahydropyran-4-yl)-[2-phenyl-5-(1,1-dioxo-thiomorpholin-4-yl)methyl-1Hindole-7-yl]amine). NecroX-7 ameliorated basal layer epithelial cell death and ulcer size in OM induced by chemotherapy or radiotherapy. This protective effect of NecroX-7 was mediated by inhibition of HMGB1 release and downregulation of mitochondrial oxidative stress. Additionally, NecroX-7 inhibited the HMGB1-induced release of tumor necrosis factor-alpha (TNF-α), interleukin (IL)-1β, and macrophage inflammatory protein (MIP)-1β, as well as the expression of p53-upregulated modulator of apoptosis (PUMA) and the excessive inflammatory microenvironment, including nuclear factor-kB (NF-kB) pathways. In conclusion, our findings suggest that HMGB1 plays a key role in the pathogenesis of OM; therefore, blockade of HMGB1 by NecroX-7 may be a novel therapeutic strategy for OM.
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188
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Roca FJ, Whitworth LJ, Redmond S, Jones AA, Ramakrishnan L. TNF Induces Pathogenic Programmed Macrophage Necrosis in Tuberculosis through a Mitochondrial-Lysosomal-Endoplasmic Reticulum Circuit. Cell 2019; 178:1344-1361.e11. [PMID: 31474371 PMCID: PMC6736209 DOI: 10.1016/j.cell.2019.08.004] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 05/15/2019] [Accepted: 08/02/2019] [Indexed: 01/07/2023]
Abstract
Necrosis of infected macrophages constitutes a critical pathogenetic event in tuberculosis by releasing mycobacteria into the growth-permissive extracellular environment. In zebrafish infected with Mycobacterium marinum or Mycobacterium tuberculosis, excess tumor necrosis factor triggers programmed necrosis of infected macrophages through the production of mitochondrial reactive oxygen species (ROS) and the participation of cyclophilin D, a component of the mitochondrial permeability transition pore. Here, we show that this necrosis pathway is not mitochondrion-intrinsic but results from an inter-organellar circuit initiating and culminating in the mitochondrion. Mitochondrial ROS induce production of lysosomal ceramide that ultimately activates the cytosolic protein BAX. BAX promotes calcium flow from the endoplasmic reticulum into the mitochondrion through ryanodine receptors, and the resultant mitochondrial calcium overload triggers cyclophilin-D-mediated necrosis. We identify ryanodine receptors and plasma membrane L-type calcium channels as druggable targets to intercept mitochondrial calcium overload and necrosis of mycobacterium-infected zebrafish and human macrophages. TNF induces mitochondrial ROS to cause necrosis of mycobacterium-infected macrophages Mitochondrial ROS activate lysosomal enzymes that lead to BAX activation BAX activates ER ryanodine receptors to cause Ca2+ flow into the mitochondrion Drugs preventing mitochondrial Ca2+ overload prevent pathogenic macrophage necrosis in TB
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Affiliation(s)
- Francisco J Roca
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Cambridge CB2 OQH, UK.
| | - Laura J Whitworth
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Cambridge CB2 OQH, UK
| | - Sarah Redmond
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Cambridge CB2 OQH, UK; Department of Microbiology, University of Washington, Seattle, WA 98195, USA
| | - Ana A Jones
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Cambridge CB2 OQH, UK
| | - Lalita Ramakrishnan
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Cambridge CB2 OQH, UK; Department of Microbiology, University of Washington, Seattle, WA 98195, USA.
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189
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Kumar NP, Moideen K, Nancy A, Viswanathan V, Shruthi BS, Sivakumar S, Natarajan M, Kornfeld H, Babu S. Heterogeneity in the cytokine profile of tuberculosis - diabetes co-morbidity. Cytokine 2019; 125:154824. [PMID: 31472402 DOI: 10.1016/j.cyto.2019.154824] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 08/22/2019] [Accepted: 08/22/2019] [Indexed: 01/08/2023]
Abstract
Tuberculosis - diabetes (TB-DM) co-morbidity is characterized by heterogeneity in clinical and biochemical parameters between newly diagnosed diabetic individuals with TB (TB-NDM) and known diabetic individuals at incident TB (TB-KDM). However, the immunological profile underlying this heterogeneity is not explored. To identify the cytokine profiles in TB-NDM and TB-KDM individuals, we examined the plasma cytokine levels as well as TB-antigen stimulated levels of pro-inflammatory cytokines. TB-KDM individuals exhibit significantly higher levels of IFNγ, IL-2, TNFα, IL-17A, IL-1α, IL-1β and IL-6 in comparison to TB-NDM, TB alone and DM alone individuals. TB-NDM individuals are characterized by significantly lower levels of blood glucose and glycated hemoglobin in comparison to TB-KDM with both groups exhibiting a significant lowering of glycated hemoglobin levels at 6 months of anti-tuberculosis therapy (ATT). TB-NDM individuals are characterized by significantly diminished - unstimulated levels of IFNγ, IL-2, TNFα, IL-17A, IL-1α, IL-1β and IL-12 at pre-treatment, of IFNγ, IL-2 and IL-1α at 2 months of ATT and IL-2 at post-treatment in comparison to TB-KDM. TB-NDM individuals are also characterized by significantly diminished TB-antigen stimulated levels of IFNγ, IL-2, TNFα, IL-17A, IL-17F, IL-1α, IL-1β and/or IL-6 at pre-treatment and at 2 months of ATT and IFNγ, IL-2, IL-1α and IL-1β at post-treatment. In addition, TB-NDM individuals are characterized by significantly diminished mitogen - stimulated levels of IL-17F and IL-6 at pre-treatment and IL-6 alone at 6 months of ATT. Therefore, our data reveal considerable heterogeneity in the immunological underpinnings of TB-DM co-morbidity. Our data also suggest that TB-NDM exhibits a characteristic profile, which is both biochemically and immunologically distinct from TB-KDM.
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Affiliation(s)
- Nathella P Kumar
- National Institutes of Health-NIRT- International Center for Excellence in Research, Chennai, India
| | - Kadar Moideen
- National Institutes of Health-NIRT- International Center for Excellence in Research, Chennai, India
| | - Arul Nancy
- National Institutes of Health-NIRT- International Center for Excellence in Research, Chennai, India; Prof. M. Viswanathan Diabetes Research Center, Chennai, India
| | | | | | | | - Mohan Natarajan
- National Institute for Research in Tuberculosis, Chennai, India
| | - Hardy Kornfeld
- University of Massachusetts Medical School, Worcester, MA, USA
| | - Subash Babu
- National Institutes of Health-NIRT- International Center for Excellence in Research, Chennai, India; University of Massachusetts Medical School, Worcester, MA, USA; LPD, NIAID, NIH, MD, USA.
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190
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TLR-2 mediated cytosolic-Ca 2+ surge activates ER-stress-superoxide-NO signalosome augmenting TNF-α production leading to apoptosis of Mycobacterium smegmatis-infected fish macrophages. Sci Rep 2019; 9:12330. [PMID: 31444398 PMCID: PMC6707155 DOI: 10.1038/s41598-019-48847-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 08/05/2019] [Indexed: 01/14/2023] Open
Abstract
The implications of TLR-2 mediated alterations in cytosolic-Ca2+((Ca2+)c) levels in M. smegmatis infections is not well known. Using headkidney macrophages (HKM) from Clarias gariepinus, we observed TLR-2 signalling is required in the phagocytosis of M. smegmatis. M. smegmatis induced caspase-dependent HKM apoptosis in MOI, time and growth-phase dependent manner. RNAi and inhibitor studies demonstrated critical role of TLR-2 in eliciting (Ca2+)c-surge and c-Src-PI3K-PLC axis playing an intermediary role in the process. The (Ca2+)c-surge triggered downstream ER-stress and superoxide (O2−) generation. The cross-talk between ER-stress and O2− amplified TNF-α production, which led to HKM apoptosis and bacterial clearance. Release of nitric oxide (NO) was also observed and silencing the NOS2-NO axis enhanced intracellular bacterial survival and attenuated caspase activity. Pre-treatment with diphenyleneidonium chloride inhibited NO production implicating O2−–NO axis imperative in M. smegmatis-induced HKM apoptosis. NO positively impacted CHOP expression and TNF-α production in infected HKM. We conclude that, TLR-2 induced (Ca2+)c-surge and ensuing cross-talk between ER-stress and O2− potentiates HKM pathology by amplifying pro-inflammatory TNF-α production. Moreover, the pro-oxidant environment triggers NO release which prolonged ER-stress and TNF-α production, culminating in HKM apoptosis and bacterial clearance. Together, our study suggests HKM an alternate model to study macrophage-mycobacteria interactions.
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191
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Srivastava S, Battu MB, Khan MZ, Nandicoori VK, Mukhopadhyay S. Mycobacterium tuberculosis PPE2 Protein Interacts with p67phox and Inhibits Reactive Oxygen Species Production. THE JOURNAL OF IMMUNOLOGY 2019; 203:1218-1229. [DOI: 10.4049/jimmunol.1801143] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 07/04/2019] [Indexed: 01/09/2023]
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192
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Hodgkinson JW, Belosevic M, Elks PM, Barreda DR. Teleost contributions to the understanding of mycobacterial diseases. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 96:111-125. [PMID: 30776420 DOI: 10.1016/j.dci.2019.02.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 02/15/2019] [Accepted: 02/15/2019] [Indexed: 06/09/2023]
Abstract
Few pathogens have shaped human medicine as the mycobacteria. From understanding biological phenomena driving disease spread, to mechanisms of host-pathogen interactions and antibiotic resistance, the Mycobacterium genus continues to challenge and offer insights into the basis of health and disease. Teleost fish models of mycobacterial infections have progressed significantly over the past three decades, now supplying a range of unique tools and new opportunities to define the strategies employed by these Gram-positive bacteria to overcome host defenses, as well as those host antimicrobial pathways that can be used to limit its growth and spread. Herein, we take a comparative perspective and provide an update on the contributions of teleost models to our understanding of mycobacterial diseases.
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Affiliation(s)
- Jordan W Hodgkinson
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Miodrag Belosevic
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Philip M Elks
- The Bateson Centre, University of Sheffield, Western Bank, Sheffield, United Kingdom; Department of Infection and Immunity and Cardiovascular Disease, University of Sheffield, Western Bank, Sheffield, United Kingdom
| | - Daniel R Barreda
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada; Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.
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193
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Robinson N, Ganesan R, Hegedűs C, Kovács K, Kufer TA, Virág L. Programmed necrotic cell death of macrophages: Focus on pyroptosis, necroptosis, and parthanatos. Redox Biol 2019; 26:101239. [PMID: 31212216 PMCID: PMC6582207 DOI: 10.1016/j.redox.2019.101239] [Citation(s) in RCA: 209] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/27/2019] [Accepted: 06/03/2019] [Indexed: 12/12/2022] Open
Abstract
Macrophages are highly plastic cells of the innate immune system. Macrophages play central roles in immunity against microbes and contribute to a wide array of pathologies. The processes of macrophage activation and their functions have attracted considerable attention from life scientists. Although macrophages are highly resistant to many toxic stimuli, including oxidative stress, macrophage death has been reported in certain diseases, such as viral infections, tuberculosis, atherosclerotic plaque development, inflammation, and sepsis. While most studies on macrophage death focused on apoptosis, a significant body of data indicates that programmed necrotic cell death forms may be equally important modes of macrophage death. Three such regulated necrotic cell death modalities in macrophages contribute to different pathologies, including necroptosis, pyroptosis, and parthanatos. Various reactive oxygen and nitrogen species, such as superoxide, hydrogen peroxide, and peroxynitrite have been shown to act as triggers, mediators, or modulators in regulated necrotic cell death pathways. Here we discuss recent advances in necroptosis, pyroptosis, and parthanatos, with a strong focus on the role of redox homeostasis in the regulation of these events.
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Affiliation(s)
- Nirmal Robinson
- Inflammation and Human Ailments Laboratory, Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, Australia.
| | - Raja Ganesan
- Inflammation and Human Ailments Laboratory, Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, Australia
| | - Csaba Hegedűs
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Katalin Kovács
- MTA-DE Cell Biology and Signaling Research Group, Debrecen, Hungary
| | - Thomas A Kufer
- University of Hohenheim, Institute of Nutritional Medicine, Department of Immunology, Stuttgart, Germany.
| | - László Virág
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary; MTA-DE Cell Biology and Signaling Research Group, Debrecen, Hungary.
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194
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Wajant H, Siegmund D. TNFR1 and TNFR2 in the Control of the Life and Death Balance of Macrophages. Front Cell Dev Biol 2019; 7:91. [PMID: 31192209 PMCID: PMC6548990 DOI: 10.3389/fcell.2019.00091] [Citation(s) in RCA: 213] [Impact Index Per Article: 42.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 05/14/2019] [Indexed: 12/18/2022] Open
Abstract
Macrophages stand in the first line of defense against a variety of pathogens but are also involved in the maintenance of tissue homeostasis. To fulfill their functions macrophages sense a broad range of pathogen- and damage-associated molecular patterns (PAMPs/DAMPs) by plasma membrane and intracellular pattern recognition receptors (PRRs). Intriguingly, the overwhelming majority of PPRs trigger the production of the pleiotropic cytokine tumor necrosis factor-alpha (TNF). TNF affects almost any type of cell including macrophages themselves. TNF promotes the inflammatory activity of macrophages but also controls macrophage survival and death. TNF exerts its activities by stimulation of two different types of receptors, TNF receptor-1 (TNFR1) and TNFR2, which are both expressed by macrophages. The two TNF receptor types trigger distinct and common signaling pathways that can work in an interconnected manner. Based on a brief general description of major TNF receptor-associated signaling pathways, we focus in this review on research of recent years that revealed insights into the molecular mechanisms how the TNFR1-TNFR2 signaling network controls the life and death balance of macrophages. In particular, we discuss how the TNFR1-TNFR2 signaling network is integrated into PRR signaling.
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Affiliation(s)
- Harald Wajant
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Daniela Siegmund
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
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195
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Wu Y, Gulbins E, Grassmé H. The function of sphingomyelinases in mycobacterial infections. Biol Chem 2019; 399:1125-1133. [PMID: 29924725 DOI: 10.1515/hsz-2018-0179] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/06/2018] [Indexed: 12/21/2022]
Abstract
Tuberculosis (TB), caused by Mycobacterium tuberculosis, is one of the deadliest and most important infectious diseases worldwide. The sphingomyelinase/ceramide system, which has been shown several times to be a crucial factor in the internalization, processing and killing of diverse pathogens, also modulates the pro-inflammatory response and the state of mycobacteria in macrophages. Both acid and neutral sphingomyelinases are important in this activity. However, studies of the role of sphingomyelinases in TB are still at an early stage.
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Affiliation(s)
- Yuqing Wu
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, D-45122 Essen, Germany
| | - Erich Gulbins
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, D-45122 Essen, Germany.,Department of Surgery, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH 45267, USA
| | - Heike Grassmé
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, D-45122 Essen, Germany
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196
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Choi MJ, Kang H, Lee YY, Choo OS, Jang JH, Park SH, Moon JS, Choi SJ, Choung YH. Cisplatin-Induced Ototoxicity in Rats Is Driven by RIP3-Dependent Necroptosis. Cells 2019; 8:E409. [PMID: 31052605 PMCID: PMC6562419 DOI: 10.3390/cells8050409] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/25/2019] [Accepted: 04/30/2019] [Indexed: 12/22/2022] Open
Abstract
Cisplatin-induced early-onset ototoxicity is linked to hearing loss. The mechanism by which cisplatin causes ototoxicity remains unclear. The purpose of this study was to identify the involvement of receptor-interacting protein kinase (RIP)3-dependent necroptosis in cisplatin-induced ototoxicity in vitro and in vivo. Sprague-Dawley rats (SD, 8 week) were treated via intraperitoneal (i.p.) injection with cisplatin (16 mg/kg for 1 day), and their hearing thresholds were measured by the auditory brainstem response (ABR) method. Hematoxylin and eosin (H & E) staining, immunohistochemistry, and western blots were performed to determine the effect of cisplatin-induced ototoxicity on cochlear morphology. Inhibitor experiments with necrostatin 1 (Nec-1) and Z-VAD were also performed in HEI-OC1 cell line. H&E stains revealed that the necroptotic changes were increased in the organ of Corti (OC) and spiral ganglion neurons (SGNs). Moreover, immunohistochemistry and western blot analysis showed that cisplatin treatment increased the protein levels of RIP3 in both OCs and SGNs. The treatment of Nec-1, a selective RIP1 inhibitor, resulted in markedly suppression of cisplatin-induced cell death in HEI-OC1 cells, whereas Z-VAD treatment did not change the cisplatin-induced cell death. Our results suggest that RIP3-dependent necroptosis was substantial in cisplatin-induced ototoxicity; inner cochlear regions, the OCs, and SGNs were especially sensitive to necroptosis.
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Affiliation(s)
- Mi-Jin Choi
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Korea.
- Bk21 Plus Research Center for Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Korea.
| | - Hyunsook Kang
- Department of Otolaryngology-Head and Neck Surgery, Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan 31151, Korea.
| | - Yun Yeong Lee
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Korea.
- Bk21 Plus Research Center for Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Korea.
| | - Oak-Sung Choo
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Korea.
- Bk21 Plus Research Center for Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Korea.
| | - Jeong Hun Jang
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Korea.
- Bk21 Plus Research Center for Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Korea.
| | - Sung-Hee Park
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Korea.
- Bk21 Plus Research Center for Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Korea.
| | - Jong-Seok Moon
- Soonchunhyang Institute of Medi-bio Science, Soonchunhyang University, Cheonan 31151, Korea.
| | - Seong Jun Choi
- Department of Otolaryngology-Head and Neck Surgery, Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan 31151, Korea.
| | - Yun-Hoon Choung
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Korea.
- Bk21 Plus Research Center for Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Korea.
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197
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Black HD, Xu W, Hortle E, Robertson SI, Britton WJ, Kaur A, New EJ, Witting PK, Chami B, Oehlers SH. The cyclic nitroxide antioxidant 4-methoxy-TEMPO decreases mycobacterial burden in vivo through host and bacterial targets. Free Radic Biol Med 2019; 135:157-166. [PMID: 30878645 DOI: 10.1016/j.freeradbiomed.2019.03.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 03/07/2019] [Accepted: 03/09/2019] [Indexed: 12/22/2022]
Abstract
Tuberculosis is a chronic inflammatory disease caused by persistent infection with Mycobacterium tuberculosis. The rise of antibiotic resistant strains necessitates the design of novel treatments. Recent evidence shows that not only is M. tuberculosis highly resistant to oxidative killing, it also co-opts host oxidant production to induce phagocyte death facilitating bacterial dissemination. We have targeted this redox environment with the cyclic nitroxide derivative 4-methoxy-TEMPO (MetT) in the zebrafish-M. marinum infection model. MetT inhibited the production of mitochondrial ROS and decreased infection-induced cell death to aid containment of infection. We identify a second mechanism of action whereby stress conditions, including hypoxia, found in the infection microenvironment appear to sensitise M. marinum to killing by MetT both in vitro and in vivo. Together, our study demonstrates MetT inhibited the growth and dissemination of M. marinum through host and bacterial targets.
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Affiliation(s)
- Harrison D Black
- Centenary Institute, The University of Sydney, Australia; The University of Sydney, Discipline of Pathology Faculty of Medicine and Health, Australia
| | - Wenbo Xu
- Centenary Institute, The University of Sydney, Australia
| | - Elinor Hortle
- Centenary Institute, The University of Sydney, Australia; The University of Sydney, Central Clinical School Faculty of Medicine and Health and Marie Bashir Institute, Australia
| | | | - Warwick J Britton
- Centenary Institute, The University of Sydney, Australia; The University of Sydney, Central Clinical School Faculty of Medicine and Health and Marie Bashir Institute, Australia
| | - Amandeep Kaur
- The University of Sydney, School of Chemistry, Australia
| | | | - Paul K Witting
- The University of Sydney, Discipline of Pathology Faculty of Medicine and Health, Australia
| | - Belal Chami
- The University of Sydney, Discipline of Pathology Faculty of Medicine and Health, Australia
| | - Stefan H Oehlers
- Centenary Institute, The University of Sydney, Australia; The University of Sydney, Central Clinical School Faculty of Medicine and Health and Marie Bashir Institute, Australia.
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198
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Florean C, Song S, Dicato M, Diederich M. Redox biology of regulated cell death in cancer: A focus on necroptosis and ferroptosis. Free Radic Biol Med 2019; 134:177-189. [PMID: 30639617 DOI: 10.1016/j.freeradbiomed.2019.01.008] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/23/2018] [Accepted: 01/06/2019] [Indexed: 12/20/2022]
Abstract
Redox changes and generation of reactive oxygen species (ROS) are part of normal cell metabolism. While low ROS levels are implicated in cellular signaling pathways necessary for survival, higher levels play major roles in cancer development as well as cell death signaling and execution. A role for redox changes in apoptosis has been long established; however, several new modalities of regulated cell death have been brought to light, for which the importance of ROS production as well as ROS source and targets are being actively investigated. In this review, we summarize recent findings on the role of ROS and redox changes in the activation and execution of two major forms of regulated cell death, necroptosis and ferroptosis. We also discuss the potential of using modulators of these two forms of cell death to exacerbate ROS as a promising anticancer therapy.
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Affiliation(s)
- Cristina Florean
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer (LBMCC), Hôpital Kirchberg, L-2540 Luxembourg, Luxembourg
| | - Sungmi Song
- Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Mario Dicato
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer (LBMCC), Hôpital Kirchberg, L-2540 Luxembourg, Luxembourg
| | - Marc Diederich
- Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
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199
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Baindara P. Host-directed therapies to combat tuberculosis and associated non-communicable diseases. Microb Pathog 2019; 130:156-168. [PMID: 30876870 DOI: 10.1016/j.micpath.2019.03.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 03/03/2019] [Accepted: 03/04/2019] [Indexed: 12/22/2022]
Abstract
Mycobacterium tuberculosis (Mtb) has coevolved with a human host to evade and exploit the immune system in multiple ways. Mtb is an enormously successful human pathogen that can remain undetected in hosts for decades without causing clinical disease. While tuberculosis (TB) represents a perfect prototype of host-pathogen interaction, it remains a major challenge to develop new therapies to combat mycobacterial infections. Additionally, recent studies emphasize on comorbidity of TB with different non-communicable diseases (NCDs), highlighting the impact of demographic and lifestyle changes on the global burden of TB. In the recent past, host-directed therapies have emerged as a novel and promising approach to treating TB. Drugs modulating host responses are likely to avoid the development of bacterial resistance which is a major public health concern for TB treatment. Interestingly, many of these drugs also form treatment strategies for non-communicable diseases. In general, technological advances along with novel host-directed therapies may open an exciting and promising research area, which can eventually deliver effective TB treatment as well as curtail the emergent synergy with NCDs.
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Affiliation(s)
- Piyush Baindara
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, USA.
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200
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Kim TS, Jin YB, Kim YS, Kim S, Kim JK, Lee HM, Suh HW, Choe JH, Kim YJ, Koo BS, Kim HN, Jung M, Lee SH, Kim DK, Chung C, Son JW, Min JJ, Kim JM, Deng CX, Kim HS, Lee SR, Jo EK. SIRT3 promotes antimycobacterial defenses by coordinating mitochondrial and autophagic functions. Autophagy 2019; 15:1356-1375. [PMID: 30774023 DOI: 10.1080/15548627.2019.1582743] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
SIRT3 (sirtuin 3), a mitochondrial protein deacetylase, maintains respiratory function, but its role in the regulation of innate immune defense is largely unknown. Herein, we show that SIRT3 coordinates mitochondrial function and macroautophagy/autophagy activation to promote anti-mycobacterial responses through PPARA (peroxisome proliferator activated receptor alpha). SIRT3 deficiency enhanced inflammatory responses and mitochondrial dysfunction, leading to defective host defense and pathological inflammation during mycobacterial infection. Antibody-mediated depletion of polymorphonuclear neutrophils significantly increased protection against mycobacterial infection in sirt3-/- mice. In addition, mitochondrial oxidative stress promoted excessive inflammation induced by Mycobacterium tuberculosis infection in sirt3-/- macrophages. Notably, SIRT3 was essential for the enhancement of PPARA, a key regulator of mitochondrial homeostasis and autophagy activation in the context of infection. Importantly, overexpression of either PPARA or TFEB (transcription factor EB) in sirt3-/- macrophages recovered antimicrobial activity through autophagy activation. Furthermore, pharmacological activation of SIRT3 enhanced antibacterial autophagy and functional mitochondrial pools during mycobacterial infection. Finally, the levels of SIRT3 and PPARA were downregulated and inversely correlated with TNF (tumor necrosis factor) levels in peripheral blood mononuclear cells from tuberculosis patients. Collectively, these data demonstrate a previously unappreciated function of SIRT3 in orchestrating mitochondrial and autophagic functions to promote antimycobacterial responses. Abbreviations: Ab: antibody; BCG: M. bovis Bacillus Calmette-Guérin; Baf-A1: bafilomycin A1; BMDMs: bone marrow-derived macrophages; CFU: colony forming unit; CXCL5: C-X-C motif chemokine ligand 5; EGFP: enhanced green fluorescent protein; ERFP: enhanced red fluorescent protein; FOXO3: forkhead box O3; HC: healthy controls; H&E: haematoxylin and eosin; HKL: honokiol; IHC: immunohistochemistry; IL1B: interleukin 1 beta; IL6: interleukin 6; IL12B: interleukin 12B; MDMs: monocyte-derived macrophages; MMP: mitochondrial membrane potential; Mtb: Mycobacterium tuberculosis; PBMC: peripheral blood mononuclear cells; PBS: phosphate buffered saline; PMN: polymorphonuclear neutrophil; PPARA: peroxisome proliferator activated receptor alpha; ROS: reactive oxygen species; SIRT3: sirtuin 3; TB: tuberculosis; TEM: transmission electron microscopy; TFEB: transcription factor EB; TNF: tumor necrosis factor.
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Affiliation(s)
- Tae Sung Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Yeung Bae Jin
- d National Primate Research Center , Korea Research Institute of Bioscience and Biotechnology , Cheongju , Korea
| | - Yi Sak Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Sup Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Jin Kyung Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Hye-Mi Lee
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea
| | - Hyun-Woo Suh
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Jin Ho Choe
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Young Jae Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Bon-Sang Koo
- d National Primate Research Center , Korea Research Institute of Bioscience and Biotechnology , Cheongju , Korea
| | - Han-Na Kim
- d National Primate Research Center , Korea Research Institute of Bioscience and Biotechnology , Cheongju , Korea
| | - Mingyu Jung
- e Department of Pathology , Chungnam National University School of Medicine , Daejeon , Korea
| | - Sang-Hee Lee
- f Institute of Molecular Biology & Genetics , Seoul National University , Seoul , Korea
| | - Don-Kyu Kim
- g Department of Molecular Biotechnology , Chonnam National University , Gwangju , Korea
| | - Chaeuk Chung
- c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea.,h Division of Pulmonary and Critical Care, Department of Internal Medicine , Chungnam National University School of Medicine , Daejeon , Korea
| | - Ji-Woong Son
- i Department of Internal Medicine , Konyang University , Daejeon , Korea
| | - Jung-Joon Min
- j Department of Nuclear Medicine , Chonnam National University Medical School , Gwangju , Korea
| | - Jin-Man Kim
- c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea.,e Department of Pathology , Chungnam National University School of Medicine , Daejeon , Korea
| | - Chu-Xia Deng
- k Faculty of Health Sciences , University of Macau , Macau SAR , China
| | - Hyun Seok Kim
- l Department of Bioinspired Science , Ewha Womans University , Seoul , Korea
| | - Sang-Rae Lee
- d National Primate Research Center , Korea Research Institute of Bioscience and Biotechnology , Cheongju , Korea
| | - Eun-Kyeong Jo
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
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