1
|
Clayton SM, Shafikhani SH, Soulika AM. Macrophage and Neutrophil Dysfunction in Diabetic Wounds. Adv Wound Care (New Rochelle) 2024. [PMID: 38695109 DOI: 10.1089/wound.2023.0149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024] Open
Abstract
Significance: The incidence of diabetes continues to rise throughout the world in an alarming rate. Diabetic patients often develop diabetic foot ulcers (DFUs), many of which do not heal. Non-healing DFUs are a major cause of hospitalization, amputation, and increased morbidity. Understanding the underlying mechanisms of impaired healing in DFU is crucial for its management. Recent Advances: This review focuses on the recent advancements on macrophages and neutrophils in diabetic wounds and DFUs. In particular, we discuss diabetes-induced dysregulations and dysfunctions of macrophages and neutrophils . Critical Issues: It is well established that diabetic wounds are characterized by stalled inflammation that results in impaired healing. Recent findings in the field suggest that dysregulation of macrophages and neutrophils plays a critical role in impaired healing in DFUs. The delineation of mechanisms that restore macrophage and neutrophil function in diabetic wound healing is the focus of intense investigation. Future Directions: The breadth of recently generated knowledge on the activity of macrophages and neutrophils in diabetic wound healing is impressive. Experimental models have delineated pathways that hold promise for the treatment of diabetic wounds and DFUs. These pathways may be useful targets for further clinical investigation.
Collapse
Affiliation(s)
- Shannon M Clayton
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, California, USA
- Department of Dermatology, School of Medicine, University of California Davis, Sacramento, California, USA
| | - Sasha H Shafikhani
- Department of Internal Medicine, Division of Hematology, Oncology and Cell Therapy, Rush University, Chicago, Illinois, USA
| | - Athena M Soulika
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, California, USA
- Department of Dermatology, School of Medicine, University of California Davis, Sacramento, California, USA
| |
Collapse
|
2
|
Tran N, Mills EL. Redox regulation of macrophages. Redox Biol 2024; 72:103123. [PMID: 38615489 PMCID: PMC11026845 DOI: 10.1016/j.redox.2024.103123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/26/2024] [Accepted: 03/11/2024] [Indexed: 04/16/2024] Open
Abstract
Redox signaling, a mode of signal transduction that involves the transfer of electrons from a nucleophilic to electrophilic molecule, has emerged as an essential regulator of inflammatory macrophages. Redox reactions are driven by reactive oxygen/nitrogen species (ROS and RNS) and redox-sensitive metabolites such as fumarate and itaconate, which can post-translationally modify specific cysteine residues in target proteins. In the past decade our understanding of how ROS, RNS, and redox-sensitive metabolites control macrophage function has expanded dramatically. In this review, we discuss the latest evidence of how ROS, RNS, and metabolites regulate macrophage function and how this is dysregulated with disease. We highlight the key tools to assess redox signaling and important questions that remain.
Collapse
Affiliation(s)
- Nhien Tran
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA, USA; Department of Immunology, Harvard Medical School, Boston, MA, USA
| | - Evanna L Mills
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA, USA; Department of Immunology, Harvard Medical School, Boston, MA, USA.
| |
Collapse
|
3
|
Priyanka, Sharma S, Joshi H, Kumar C, Waseem R, Sharma M. Mycobacterium tuberculosis protein PPE15 (Rv1039c) possesses eukaryote-like SH3 domain that interferes with NADPH Oxidase assembly and Reactive Oxygen Species production. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119702. [PMID: 38408543 DOI: 10.1016/j.bbamcr.2024.119702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 02/28/2024]
Abstract
Inhibition of Reactive Oxygen Species (ROS) is one of the strategies that Mycobacterium tuberculosis (Mtb) employs as its defence mechanism. In this study, the role of PPE15 (Rv1039c), a late-stage protein, has been investigated in modulating the cellular ROS. We discovered PPE15 to be a secretory protein that downregulates ROS generation in THP1 macrophages. Our in-silico analysis revealed the presence of a eukaryote-like SH3 (SH3e) domain in PPE15. The predicted SH3e-domain of PPE15 was found to interact with cytosolic components of NADPH Oxidase (NOX), p67phox and p47phox through molecular docking. In-vitro experiments using THP1 macrophages showed a diminished NADP/NADPH ratio, indicating reduced NOX activity. We also observed increased levels of p67phox and p47phox in the cytoplasmic fraction of PPE15 treated macrophages as compared to the plasma membrane fraction. To understand the role of the SH3e-domain in ROS modulation, this domain was deleted from the full-length PPE15 (PPE15-/-SH3). We observed an increase in cellular ROS and NADP/NADPH ratio in response to PPE15-/-SH3 protein. The interaction of PPE15-/-SH3 with p67phox or p47phox was also reduced in the cytoplasm, indicating migration of NOX subunits to the plasma membrane. Additionally, M. smegmatis expressing PPE15 was observed to be resistant to oxidative stress with significant intracellular survival in THP1 macrophages as compared to M. smegmatis expressing PPE15-/-SH3. These observations suggest that the SH3e-domain of PPE15 interferes with ROS generation by sequestering NOX components that inhibit NOX assembly at the cell membrane. Therefore, PPE15 acts like a molecular mimic of SH3-domain carrying eukaryotic proteins that can be employed by Mtb at late stages of infection for its survival. These findings give us new insights about the pathogen evading strategy of Mtb which may help in improving the therapeutics for TB treatment.
Collapse
Affiliation(s)
- Priyanka
- DSKC BioDiscovery Laboratory and Department of Zoology, Miranda House, University of Delhi, Delhi, India.
| | - Sadhna Sharma
- DSKC BioDiscovery Laboratory and Department of Zoology, Miranda House, University of Delhi, Delhi, India.
| | - Hemant Joshi
- School of Biotechnology, Jawaharlal Nehru University, Delhi, India
| | - Chanchal Kumar
- Department of Microbiology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - Rashid Waseem
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Monika Sharma
- DSKC BioDiscovery Laboratory and Department of Zoology, Miranda House, University of Delhi, Delhi, India.
| |
Collapse
|
4
|
Lin W, Chen H, Chen X, Guo C. The Roles of Neutrophil-Derived Myeloperoxidase (MPO) in Diseases: The New Progress. Antioxidants (Basel) 2024; 13:132. [PMID: 38275657 PMCID: PMC10812636 DOI: 10.3390/antiox13010132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/06/2024] [Accepted: 01/12/2024] [Indexed: 01/27/2024] Open
Abstract
Myeloperoxidase (MPO) is a heme-containing peroxidase, mainly expressed in neutrophils and, to a lesser extent, in monocytes. MPO is known to have a broad bactericidal ability via catalyzing the reaction of Cl- with H2O2 to produce a strong oxidant, hypochlorous acid (HOCl). However, the overproduction of MPO-derived oxidants has drawn attention to its detrimental role, especially in diseases characterized by acute or chronic inflammation. Broadly speaking, MPO and its derived oxidants are involved in the pathological processes of diseases mainly through the oxidation of biomolecules, which promotes inflammation and oxidative stress. Meanwhile, some researchers found that MPO deficiency or using MPO inhibitors could attenuate inflammation and tissue injuries. Taken together, MPO might be a promising target for both prognostic and therapeutic interventions. Therefore, understanding the role of MPO in the progress of various diseases is of great value. This review provides a comprehensive analysis of the diverse roles of MPO in the progression of several diseases, including cardiovascular diseases (CVDs), neurodegenerative diseases, cancers, renal diseases, and lung diseases (including COVID-19). This information serves as a valuable reference for subsequent mechanistic research and drug development.
Collapse
Affiliation(s)
- Wei Lin
- Clinical Pharmacology Research Center, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China;
| | - Huili Chen
- Center of System Pharmacology and Pharmacometrics, College of Pharmacy, University of Florida, Gainesville, FL 32611, USA;
| | - Xijing Chen
- Clinical Pharmacology Research Center, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China;
| | - Chaorui Guo
- Clinical Pharmacology Research Center, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China;
| |
Collapse
|
5
|
Zhu Q, Han Y, Wang X, Jia R, Zhang J, Liu M, Zhang W. Hypoxia exacerbates intestinal injury and inflammatory response mediated by myeloperoxidase during Salmonella Typhimurium infection in mice. Gut Pathog 2023; 15:62. [PMID: 38037141 PMCID: PMC10688069 DOI: 10.1186/s13099-023-00586-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 11/21/2023] [Indexed: 12/02/2023] Open
Abstract
BACKGROUND High-altitude exposure can cause oxidative stress damage in the intestine, which leads to increased intestinal permeability and bacterial translocation, resulting in local and systemic inflammation. Control of infection is critically dependent on the host's ability to kill pathogens with reactive oxygen species (ROS). Myeloperoxidase (MPO) targets ROS in pathogens. This study aimed to investigate the effects of hypoxia on the colonic mucosal barrier and myeloperoxidase (MPO)-mediated innate immune response in the colon. METHODS AND RESULTS Genetically engineered mice were exposed to a hypobaric oxygen chamber for 3 days and an inflammation model was established using Salmonella Typhimurium infection. We found that hypoxic exposure caused the development of exacerbated bacterial colitis and enhanced bacterial dissemination in MPO-deficient mice. Infection and disease severity were associated with significantly increased Ly6G+ neutrophil and F4/80+ macrophage counts in infected tissues, which is consistent with elevated proinflammatory cytokines and chemoattractant molecules. Hypoxia restrained antioxidant ability and MPO deficiency aggravated the respiratory burst in the colon. CONCLUSION Hypoxia can damage the colonic mucosa. MPO mediates the innate immune response and regulates the mucosal and systemic inflammatory responses to Salmonella infection during hypoxia.
Collapse
Affiliation(s)
- Qinfang Zhu
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Ying Han
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Xiaozhou Wang
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Ruhan Jia
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Jingxuan Zhang
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Meiheng Liu
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Wei Zhang
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China.
| |
Collapse
|
6
|
Hunt M, Torres M, Bachar-Wikström E, Wikström JD. Multifaceted roles of mitochondria in wound healing and chronic wound pathogenesis. Front Cell Dev Biol 2023; 11:1252318. [PMID: 37771375 PMCID: PMC10523588 DOI: 10.3389/fcell.2023.1252318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/28/2023] [Indexed: 09/30/2023] Open
Abstract
Mitochondria are intracellular organelles that play a critical role in numerous cellular processes including the regulation of metabolism, cellular stress response, and cell fate. Mitochondria themselves are subject to well-orchestrated regulation in order to maintain organelle and cellular homeostasis. Wound healing is a multifactorial process that involves the stringent regulation of several cell types and cellular processes. In the event of dysregulated wound healing, hard-to-heal chronic wounds form and can place a significant burden on healthcare systems. Importantly, treatment options remain limited owing to the multifactorial nature of chronic wound pathogenesis. One area that has received more attention in recent years is the role of mitochondria in wound healing. With regards to this, current literature has demonstrated an important role for mitochondria in several areas of wound healing and chronic wound pathogenesis including metabolism, apoptosis, and redox signalling. Additionally, the influence of mitochondrial dynamics and mitophagy has also been investigated. However, few studies have utilised patient tissue when studying mitochondria in wound healing, instead using various animal models. In this review we dissect the current knowledge of the role of mitochondria in wound healing and discuss how future research can potentially aid in the progression of wound healing research.
Collapse
Affiliation(s)
- Matthew Hunt
- Dermatology and Venerology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Monica Torres
- Dermatology and Venerology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Etty Bachar-Wikström
- Dermatology and Venerology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Jakob D. Wikström
- Dermatology and Venerology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| |
Collapse
|
7
|
Awasthi D, Chopra S, Cho BA, Emmanuelli A, Sandoval TA, Hwang SM, Chae CS, Salvagno C, Tan C, Vasquez-Urbina L, Fernandez Rodriguez JJ, Santagostino SF, Iwawaki T, Romero-Sandoval EA, Crespo MS, Morales DK, Iliev ID, Hohl TM, Cubillos-Ruiz JR. Inflammatory ER stress responses dictate the immunopathogenic progression of systemic candidiasis. J Clin Invest 2023; 133:e167359. [PMID: 37432737 PMCID: PMC10471176 DOI: 10.1172/jci167359] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 07/06/2023] [Indexed: 07/12/2023] Open
Abstract
Recognition of pathogen-associated molecular patterns can trigger the inositol-requiring enzyme 1 α (IRE1α) arm of the endoplasmic reticulum (ER) stress response in innate immune cells. This process maintains ER homeostasis and also coordinates diverse immunomodulatory programs during bacterial and viral infections. However, the role of innate IRE1α signaling in response to fungal pathogens remains elusive. Here, we report that systemic infection with the human opportunistic fungal pathogen Candida albicans induced proinflammatory IRE1α hyperactivation in myeloid cells that led to fatal kidney immunopathology. Mechanistically, simultaneous activation of the TLR/IL-1R adaptor protein MyD88 and the C-type lectin receptor dectin-1 by C. albicans induced NADPH oxidase-driven generation of ROS, which caused ER stress and IRE1α-dependent overexpression of key inflammatory mediators such as IL-1β, IL-6, chemokine (C-C motif) ligand 5 (CCL5), prostaglandin E2 (PGE2), and TNF-α. Selective ablation of IRE1α in leukocytes, or treatment with an IRE1α pharmacological inhibitor, mitigated kidney inflammation and prolonged the survival of mice with systemic C. albicans infection. Therefore, controlling IRE1α hyperactivation may be useful for impeding the immunopathogenic progression of disseminated candidiasis.
Collapse
Affiliation(s)
| | - Sahil Chopra
- Department of Obstetrics and Gynecology, and
- Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, New York, USA
| | - Byuri A. Cho
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Alexander Emmanuelli
- Department of Obstetrics and Gynecology, and
- Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, New York, USA
| | | | | | | | | | - Chen Tan
- Department of Obstetrics and Gynecology, and
| | | | - Jose J. Fernandez Rodriguez
- Unit of Excellence, Institute of Biology and Molecular Genetics, CSIC–Universidad de Valladolid, Valladolid, Spain
| | - Sara F. Santagostino
- Laboratory of Comparative Pathology, Memorial Sloan Kettering Cancer Center, The Rockefeller University, and Weill Cornell Medicine, New York, New York, USA
| | - Takao Iwawaki
- Division of Cell Medicine, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan
| | - E. Alfonso Romero-Sandoval
- Department of Anesthesiology, Pain Mechanisms Laboratory, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Mariano Sanchez Crespo
- Unit of Excellence, Institute of Biology and Molecular Genetics, CSIC–Universidad de Valladolid, Valladolid, Spain
| | | | - Iliyan D. Iliev
- Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, New York, USA
- Department of Medicine and
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease, Weill Cornell Medicine, New York, New York, USA
| | - Tobias M. Hohl
- Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, New York, USA
- Infectious Disease Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Juan R. Cubillos-Ruiz
- Department of Obstetrics and Gynecology, and
- Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, New York, USA
| |
Collapse
|
8
|
Gollnick H, Barber J, Wilkinson RJ, Newton S, Garg A. IL-27 inhibits anti- Mycobacterium tuberculosis innate immune activity of primary human macrophages. Tuberculosis (Edinb) 2023; 139:102326. [PMID: 36863206 PMCID: PMC10052773 DOI: 10.1016/j.tube.2023.102326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 02/12/2023] [Accepted: 02/19/2023] [Indexed: 03/04/2023]
Abstract
Mycobacterium tuberculosis (M. tuberculosis) is an intracellular pathogen that primarily infects macrophages. Despite a robust anti-mycobacterial response, many times macrophages are unable to control M. tuberculosis. The purpose of this study was to investigate the mechanism by which the immunoregulatory cytokine IL-27 inhibits the anti-mycobacterial activity of primary human macrophages. We found concerted production of IL-27 and anti-mycobacterial cytokines by M. tuberculosis-infected macrophages in a toll-like receptor (TLR) dependent manner. Notably, IL-27 suppressed the production of anti-mycobacterial cytokines TNFα, IL-6, IL-1β, and IL-15 by M. tuberculosis-infected macrophages. IL-27 limits the anti-mycobacterial activity of macrophages by reducing Cyp27B, cathelicidin (LL-37), LC3B lipidation, and increasing IL-10 production. Furthermore, neutralizing both IL-27 and IL-10 increased the expression of proteins involved in LC3-associated phagocytosis (LAP) pathway for bacterial clearance, namely vacuolar-ATPase, NOX2, and RUN-domain containing protein RUBCN. These results implicate IL-27 is a prominent cytokine that impedes M. tuberculosis clearance.
Collapse
Affiliation(s)
- Hailey Gollnick
- College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Jamie Barber
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Robert J Wilkinson
- Department of Infectious Diseases, Imperial College London, W12 0NN, United Kingdom; The Francis Crick Institute London, NW1 1AT, United Kingdom
| | - Sandra Newton
- Section of Pediatric Infectious Disease, Department of Infectious Disease, Imperial College London, W2 1PG, United Kingdom
| | - Ankita Garg
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, USA.
| |
Collapse
|
9
|
Shen LH, Zhang Y, Shen Y, Su ZT, Yu SM, Cao SZ, Zong XL. Effect of anemoside B4 on milk whey in clinical mastitis-affected cows elucidated using tandem mass tag (TMT)-based quantitative proteomics. Sci Rep 2022; 12:18829. [PMID: 36335251 PMCID: PMC9637092 DOI: 10.1038/s41598-022-23749-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 11/04/2022] [Indexed: 11/08/2022] Open
Abstract
Intramuscular injection of anemoside B4 (AB4) has a superior therapeutic effect on clinical mastitis in lactating cows. Here, we explored AB4's effect on milk whey in clinical mastitis-affected cows using proteomics. Among fifty clinical mastitis cows received AB4 administration (0.05 ml/kg/day, for 7 days), twelve healed cows were selected and marked as group T. Twelve clinically heathy cows received the same dose of saline for 7 days, marked as group C. Collected milk whey of group T before and after AB4 administration marked as T1 and T2, respectively. The milk whey of group C after saline injection marked as C1. Milk whey protein changes were detected using tandem mass tag-based quantitative proteomic. We identified 872 quantifiable proteins in the samples. Among them, 511 proteins between T1 and C1, and 361 proteins between T2 and T1 were significantly altered. T1 than C1 had significantly more proteins associated with inflammatory damage and trans-endothelial migration of leukocytes, whereas these proteins were reduced in T2 treated with AB4. Compared with C, proteins associated with fibrin clot degradation and complement system activation were downregulated in T1 but upregulated in T2. In summary, AB4 can exert its therapeutic effect on clinical mastitis in cows mainly by reducing inflammatory damage, activating the complement system, inhibiting trans-endothelial migration of leukocytes, and promoting degradation of milk fibrin clots.
Collapse
Affiliation(s)
- Liu-hong Shen
- grid.80510.3c0000 0001 0185 3134The Key Laboratory of Animal Disease and Human Health of Sichuan Province, The Medical Research Center for Cow Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Yue Zhang
- grid.80510.3c0000 0001 0185 3134The Key Laboratory of Animal Disease and Human Health of Sichuan Province, The Medical Research Center for Cow Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Yu Shen
- grid.80510.3c0000 0001 0185 3134The Key Laboratory of Animal Disease and Human Health of Sichuan Province, The Medical Research Center for Cow Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Zhe-tong Su
- Guangxi Innovates Medical Technology Co., Ltd., Lipu, 546600 Guangxi China
| | - Shu-min Yu
- grid.80510.3c0000 0001 0185 3134The Key Laboratory of Animal Disease and Human Health of Sichuan Province, The Medical Research Center for Cow Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Sui-zhong Cao
- grid.80510.3c0000 0001 0185 3134The Key Laboratory of Animal Disease and Human Health of Sichuan Province, The Medical Research Center for Cow Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Xiao-lan Zong
- grid.80510.3c0000 0001 0185 3134The Key Laboratory of Animal Disease and Human Health of Sichuan Province, The Medical Research Center for Cow Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| |
Collapse
|
10
|
Pleiotropic Roles of Atrial Natriuretic Peptide in Anti-Inflammation and Anti-Cancer Activity. Cancers (Basel) 2022; 14:cancers14163981. [PMID: 36010974 PMCID: PMC9406604 DOI: 10.3390/cancers14163981] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 08/07/2022] [Accepted: 08/15/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary The relationship between inflammation and carcinogenesis, as well as the response to anti-tumor therapy, is intimate. Atrial natriuretic peptides (ANPs) play a pivotal role in the homeostatic control of blood pressure, electrolytes, and water balance. In addition, ANPs exert immune-modulatory effects in the tissue microenvironment, thus exhibiting a fascinating ability to prevent inflammation-related tumorigenesis and cancer recurrence. In cancers, ANPs show anti-proliferative effects through several molecular pathways. Furthermore, ANPs attenuate the side effects of cancer therapy. Therefore, ANPs have potential therapeutic value in tumors. Here, we summarized the roles of ANPs in diverse aspects of the immune system and the molecular mechanisms underlying the anti-cancer effects of ANPs, contributing to the development of ANP-based anti-cancer agents. Abstract The atrial natriuretic peptide (ANP), a cardiovascular hormone, plays a pivotal role in the homeostatic control of blood pressure, electrolytes, and water balance and is approved to treat congestive heart failure. In addition, there is a growing realization that ANPs might be related to immune response and tumor growth. The anti-inflammatory and immune-modulatory effects of ANPs in the tissue microenvironment are mediated through autocrine or paracrine mechanisms, which further suppress tumorigenesis. In cancers, ANPs show anti-proliferative effects through several molecular pathways. Furthermore, ANPs attenuate the side effects of cancer therapy. Therefore, ANPs act on several hallmarks of cancer, such as inflammation, angiogenesis, sustained tumor growth, and metastasis. In this review, we summarized the contributions of ANPs in diverse aspects of the immune system and the molecular mechanisms underlying the anti-cancer effects of ANPs.
Collapse
|
11
|
Thompson MA, Zuniga K, Sousse L, Christy R, Gurney J. The Role of Vitamin E in Thermal Burn Injuries, Infection, and Sepsis: A Review. J Burn Care Res 2022; 43:1260-1270. [PMID: 35863690 PMCID: PMC9629418 DOI: 10.1093/jbcr/irac100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Thermal burn injuries are still a serious public health concern in the United States, due to the initial insult and resulting comorbidities. Burned patients are increasingly susceptible to colonization by endogenous and exogenous microorganisms after having lost skin, which acts as the primary protective barrier to environmental contaminants. Furthermore, the onset of additional pathophysiologies, specifically sepsis, becomes more likely in burned patients compared to other injuries. Despite improvements in the early care of burn patients, infections, and sepsis, these pathophysiologies remain major causes of morbidity and mortality and warrant further investigation of potential therapies. Vitamin E may be one such therapy. We aimed to identify publications of studies that evaluated the effectiveness of vitamin E as it pertains to thermal burn injuries, infection, and sepsis. Several investigations ranging from in vitro bench work to clinical studies have examined the impact on, or influence of, vitamin E in vitro, in vivo, and in the clinical setting. To the benefit of subjects it has been shown that enteral or parenteral vitamin E supplementation can prevent, mitigate, and even reverse the effects of thermal burn injuries, infection, and sepsis. Therefore, a large-scale prospective observational study to assess the potential benefits of vitamin E supplementation in patients is warranted and could result in clinical care practice paradigm changes.
Collapse
Affiliation(s)
- Marc A Thompson
- US Army Institute of Surgical Research, JBSA Ft Sam Houston, San Antonio, TX
| | - Kameel Zuniga
- US Army Institute of Surgical Research, JBSA Ft Sam Houston, San Antonio, TX
| | - Linda Sousse
- US Army Institute of Surgical Research, JBSA Ft Sam Houston, San Antonio, TX
| | - Robert Christy
- US Army Institute of Surgical Research, JBSA Ft Sam Houston, San Antonio, TX
| | - Jennifer Gurney
- Burn Center, United States Army Institute of Surgical Research, JBSA Ft. Sam Houston, TX, USA
| |
Collapse
|
12
|
Parny M, Coste A, Aubouy A, Rahabi M, Prat M, Pipy B, Treilhou M. Differential immunomodulatory effects of six pesticides of different chemical classes on human monocyte-derived macrophage functions. Food Chem Toxicol 2022; 163:112992. [PMID: 35395341 DOI: 10.1016/j.fct.2022.112992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/04/2022] [Accepted: 04/03/2022] [Indexed: 01/19/2023]
Abstract
Exposure to pesticides through eyes, skin, ingestion and inhalation may affects human health by interfering with immune cells, such as macrophages. We evaluated, in vitro, the effect of six pesticides widely used in apple arboriculture on the functions of human monocyte-derived macrophages (hMDMs). hMDMs were cultured for 4 or 24 h with or without pesticides (0.01, 0.1, 1, 10 μmol.L-1). We showed that chlorpyrifos, thiacloprid, thiophanate, boscalid, and captan had little toxic effect at the tested concentrations, while dithianon had low-cytotoxicity at 10 μmol.L-1. While boscalid showed no effect on hMDMs function, thiophanate (0.01 μmol.L-1) stimulated with TPA and thiacloprid (1, 10 μmol.L-1) stimulated with zymosan activated ROS production. Chlorpyrifos, dithianon, and captan inhibited ROS production and TNF-α, IL-1β pro-inflammatory cytokines. We established that dithianon (0.01-1 μmol.L-1) and captan (0.1, 1 μmol.L-1) induced mRNA expression of NQO1 and HMOX1 antioxidant enzymes. Dithianon also induced the mRNA expression of catalase, superoxide dismutase-2 at 10 μmol.L-1. Together, these results show that exposure to chlorpyrifos, dithianon, and captan induce immunomodulatory effects that may influence the disease fighting properties of monocytes/macrophages while pesticides such as thiacloprid, thiophanate and boscalid have little influence.
Collapse
Affiliation(s)
- Melissa Parny
- EA7417, BTSB, Université Fédérale Toulouse Midi-Pyrénées, INU Champollion, Albi, France; PHARMADEV UMR 152, Institut de Recherche pour le Développement (IRD), Université Paul Sabatier Toulouse 3, Toulouse, France.
| | - Agnès Coste
- PHARMADEV UMR 152, Institut de Recherche pour le Développement (IRD), Université Paul Sabatier Toulouse 3, Toulouse, France.
| | - Agnès Aubouy
- PHARMADEV UMR 152, Institut de Recherche pour le Développement (IRD), Université Paul Sabatier Toulouse 3, Toulouse, France.
| | - Mouna Rahabi
- PHARMADEV UMR 152, Institut de Recherche pour le Développement (IRD), Université Paul Sabatier Toulouse 3, Toulouse, France.
| | - Melissa Prat
- PHARMADEV UMR 152, Institut de Recherche pour le Développement (IRD), Université Paul Sabatier Toulouse 3, Toulouse, France.
| | - Bernard Pipy
- PHARMADEV UMR 152, Institut de Recherche pour le Développement (IRD), Université Paul Sabatier Toulouse 3, Toulouse, France.
| | - Michel Treilhou
- EA7417, BTSB, Université Fédérale Toulouse Midi-Pyrénées, INU Champollion, Albi, France.
| |
Collapse
|
13
|
Environment tames CGD macrophages. Blood 2022; 139:1611-1612. [PMID: 35298607 DOI: 10.1182/blood.2021014417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 10/29/2021] [Indexed: 11/20/2022] Open
|
14
|
Tian T, Fu J, Li D, Liu Y, Sun H, Wang X, Zhang X, Zhang D, Zheng T, Zhao Y, Pang D. Methylation of Immune-Related Genes in Peripheral Blood Leukocytes and Breast Cancer. Front Oncol 2022; 12:817565. [PMID: 35223499 PMCID: PMC8867609 DOI: 10.3389/fonc.2022.817565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 01/17/2022] [Indexed: 11/13/2022] Open
Abstract
Abnormal DNA methylation contributes to breast cancer (BC). Immune-related genes play crucial roles in BC development and progression. This study aims to investigate the effect of methylation of immune-related genes in peripheral blood leukocytes (PBLs) on BC risk. GSE51032 and GSE104942 datasets were used to identify significantly differentially methylated CpG sites (DMCs) of immune-related genes. A case-control study was conducted using MethylTarget sequencing to validate the relationship between the methylation levels of the screened genes and BC risk. We also evaluated the association between methylation haplotypes of screened genes and BC risk. Moreover, we sorted the blood leukocytes into T cells, B cells, and monocytes to detect the difference of DNA methylation in different cell subtypes. A total of five DMCs were screened from GEO datasets, including cg01760846 (PSMC1), cg07141527 (SPPL3), cg15658543 (CARD11), cg21568368 (PSMB8), and cg24045276 (NCF2). In the case-control study, there were significant associations between methylation of the CpG sites in the five genes and BC risk. Methylation haplotype burdens of PSMC1, CARD11, and PSMB8 were associated with reduced BC risk. Moreover, there were heterogeneities in the methylation levels of the genes in different cell subtypes. In conclusion, methylation of PSMC1, SPPL3, CARD11, PSMB8, and NCF2 in PBLs were associated with BC risk. The five-gene methylation could be the potential biomarkers for predicting BC risk.
Collapse
Affiliation(s)
- Tian Tian
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, China
| | - JinMing Fu
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, China
| | - DaPeng Li
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, China
| | - YuPeng Liu
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, China
| | - HongRu Sun
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, China
| | - Xuan Wang
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, China
| | - XianYu Zhang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Ding Zhang
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, China
| | - Ting Zheng
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, China
| | - Yashuang Zhao
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, China
| | - Da Pang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| |
Collapse
|
15
|
Gugnacki P, Sierko E. Is There an Interplay between Oral Microbiome, Head and Neck Carcinoma and Radiation-Induced Oral Mucositis? Cancers (Basel) 2021; 13:5902. [PMID: 34885015 PMCID: PMC8656742 DOI: 10.3390/cancers13235902] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/22/2021] [Accepted: 11/22/2021] [Indexed: 02/07/2023] Open
Abstract
Head and neck carcinoma is one of the most common human malignancy types and it ranks as the sixth most common cancer worldwide. Nowadays, a great potential of microbiome research is observed in oncology-investigating the effect of oral microbiome in oncogenesis, occurrence of treatment side effects and response to anticancer therapies. The microbiome is a unique collection of microorganisms and their genetic material, interactions and products residing within the mucous membranes. The aim of this paper is to summarize current research on the oral microbiome and its impact on the development of head and neck cancer and radiation-induced oral mucositis. Human microbiome might determine an oncogenic effect by, among other things, inducing chronic inflammatory response, instigating cellular antiapoptotic signals, modulation of anticancer immunity or influencing xenobiotic metabolism. Influence of oral microbiome on radiation-induced oral mucositis is expressed by the production of additional inflammatory cytokines and facilitates progression and aggravation of mucositis. Exacerbated acute radiation reaction and bacterial superinfections lead to the deterioration of the patient's condition and worsening of the quality of life. Simultaneously, positive effects of probiotics on the course of radiation-induced oral mucositis have been observed. Understanding the impact on the emerging acute radiation reaction on the composition of the microflora can be helpful in developing a multifactorial model to forecast the course of radiation-induced oral mucositis. Investigating these processes will allow us to create optimized and personalized preventive measures and treatment aimed at their formation mechanism. Further studies are needed to better establish the structure of the oral microbiome as well as the dynamics of its changes before and after therapy. It will help to expand the understanding of the biological function of commensal and pathogenic oral microbiota in HNC carcinogenesis and the development of radiation-induced oral mucositis.
Collapse
Affiliation(s)
| | - Ewa Sierko
- Department of Oncology, Medical University of Bialystok, 15-025 Bialystok, Poland;
| |
Collapse
|
16
|
Al Ghadeer HA, Busaleh FN, Al Habeeb JA, Alaithan RM, Almutahhar AE, Bin Abd MM, Aldawood MM. Liver Abscesses as a Sign of Chronic Granulomatous Disease in Adolescent. Cureus 2021; 13:e17467. [PMID: 34589361 PMCID: PMC8464347 DOI: 10.7759/cureus.17467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2021] [Indexed: 11/26/2022] Open
Abstract
Chronic granulomatous disease (CGD) is an inherited primary immunodeficiency disease caused by a genetic defect in the nicotinamide adenine dinucleotide phosphate oxidase (NADPH) complex that affects phagocytes. This leads to recurrent severe bacterial and fungal infections manifested by recurrent pneumonia, also involving soft tissue, bones, and liver. Usually, CGD is presented and diagnosed in the first five years of life. In this case report, we describe a late presentation in an adolescent with multiple liver abscesses, the approach of diagnosis, and management.
Collapse
Affiliation(s)
| | - Fadi N Busaleh
- Pediatrics, Maternity and Children Hospital, AlAhsa, SAU
| | - Jaber A Al Habeeb
- Allergy and Immunology, Maternity and Children Hospital, AlAhsa, SAU
| | | | | | | | | |
Collapse
|
17
|
Lukácsi S, Farkas Z, Saskői É, Bajtay Z, Takács-Vellai K. Conserved and Distinct Elements of Phagocytosis in Human and C. elegans. Int J Mol Sci 2021; 22:ijms22168934. [PMID: 34445642 PMCID: PMC8396242 DOI: 10.3390/ijms22168934] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/12/2021] [Accepted: 08/17/2021] [Indexed: 12/12/2022] Open
Abstract
Endocytosis provides the cellular nutrition and homeostasis of organisms, but pathogens often take advantage of this entry point to infect host cells. This is counteracted by phagocytosis that plays a key role in the protection against invading microbes both during the initial engulfment of pathogens and in the clearance of infected cells. Phagocytic cells balance two vital functions: preventing the accumulation of cell corpses to avoid pathological inflammation and autoimmunity, whilst maintaining host defence. In this review, we compare elements of phagocytosis in mammals and the nematode Caenorhabditis elegans. Initial recognition of infection requires different mechanisms. In mammals, pattern recognition receptors bind pathogens directly, whereas activation of the innate immune response in the nematode rather relies on the detection of cellular damage. In contrast, molecules involved in efferocytosis—the engulfment and elimination of dying cells and cell debris—are highly conserved between the two species. Therefore, C. elegans is a powerful model to research mechanisms of the phagocytic machinery. Finally, we show that both mammalian and worm studies help to understand how the two phagocytic functions are interconnected: emerging data suggest the activation of innate immunity as a consequence of defective apoptotic cell clearance.
Collapse
Affiliation(s)
- Szilvia Lukácsi
- MTA-ELTE Immunology Research Group, Eötvös Loránd Research Network (ELKH), Eötvös Loránd University, Pázmány Péter s. 1/C, 1117 Budapest, Hungary; (S.L.); (Z.B.)
| | - Zsolt Farkas
- Department of Biological Anthropology, Eötvös Loránd University, Pázmány Péter s. 1/C, 1117 Budapest, Hungary; (Z.F.); (É.S.)
| | - Éva Saskői
- Department of Biological Anthropology, Eötvös Loránd University, Pázmány Péter s. 1/C, 1117 Budapest, Hungary; (Z.F.); (É.S.)
| | - Zsuzsa Bajtay
- MTA-ELTE Immunology Research Group, Eötvös Loránd Research Network (ELKH), Eötvös Loránd University, Pázmány Péter s. 1/C, 1117 Budapest, Hungary; (S.L.); (Z.B.)
- Department of Immunology, Eötvös Loránd University, Pázmány Péter s. 1/C, 1117 Budapest, Hungary
| | - Krisztina Takács-Vellai
- Department of Biological Anthropology, Eötvös Loránd University, Pázmány Péter s. 1/C, 1117 Budapest, Hungary; (Z.F.); (É.S.)
- Correspondence:
| |
Collapse
|
18
|
Du H, Pang H, Gao Y, Zhou Y, Li SJ. Deficiency of voltage-gated proton channel Hv1 aggravates ovalbumin-induced allergic lung asthma in mice. Int Immunopharmacol 2021; 96:107640. [PMID: 33866247 DOI: 10.1016/j.intimp.2021.107640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 03/18/2021] [Accepted: 04/01/2021] [Indexed: 02/07/2023]
Abstract
Asthma is a chronic airway inflammation that caused by many factors. The voltage-gated proton channel Hv1 has been proposed to extrude excessive protons produced by NADPH oxidase (NOX) from cytosol to maintain its activity during respiratory bursts. Here, we showed that loss of Hv1 aggravates ovalbumin (OVA)-induced allergic lung asthma in mice. The numbers of total cells, eosinophils and neutrophils in bronchoalveolar lavage fluid (BALF) of Hv1-deficiency (KO) mice are obviously increased after OVA challenge compared with that of wild-type (WT) mice. Histopathological staining reveals that Hv1-deficiency aggravates OVA-induced inflammatory cell infiltration and goblet cell hyperplasia in lung tissues. The expression of IL-4, IL-5 and IL-13 are markedly increased in lung tissues of OVA-challenged KO mice compared with that of WT mice. Furthermore, the expression levels of NOX2, NOX4 and DUOX1 are dramatically increased, while the expression levels of SOD2 and catalase are significantly reduced in lung tissues of OVA-challenged KO mice compared with that of WT mice. The production of ROS in lung tissues of KO mice is significantly higher than that of WT mice after OVA challenge. Our data suggest that Hv1-deficiency might aggravate the development of allergic asthma through increasing ROS production.
Collapse
Affiliation(s)
- Hongyan Du
- Department of Biophysics, School of Physical Science, The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, Tianjin 300071, China
| | - Huimin Pang
- Department of Biophysics, School of Physical Science, The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, Tianjin 300071, China
| | - Yingtang Gao
- Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Institute of Hepatobiliary Disease, Tianjin Third Central Hospital affiliated to Nankai University, 83 Jintang Road, Hedong District, Tianjin 300170, China
| | - Yongfa Zhou
- Department of Biophysics, School of Physical Science, The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, Tianjin 300071, China
| | - Shu Jie Li
- Department of Biophysics, School of Physical Science, The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, Tianjin 300071, China; Qilu Institute of Technology, Shandong 250200, P. R. China.
| |
Collapse
|
19
|
Matsumoto M, Liu J, Iwata K, Ibi M, Asaoka N, Zhang X, Katsuyama M, Matsuda M, Nabe T, Schröder K, Yabe-Nishimura C. NOX1/NADPH oxidase is involved in the LPS-induced exacerbation of collagen-induced arthritis. J Pharmacol Sci 2021; 146:88-97. [PMID: 33941325 DOI: 10.1016/j.jphs.2021.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 01/19/2021] [Accepted: 01/25/2021] [Indexed: 11/20/2022] Open
Abstract
We investigate as yet an unidentified role of NOX1, a non-phagocytic isoform of the superoxide-generating NADPH oxidase, in immune responses using Nox1-knockout mice (Nox1-KO). The transcripts of NOX1 was expressed in lymphoid tissues, including the spleen, thymus, bone marrow, and inguinal lymphoid nodes. When antibody production after ovalbumin (OVA) immunization was examined, no significant differences were observed in serum anti-OVA IgG levels between wild-type mice (WT) and Nox1-KO. In the experimental asthma, the infiltration of eosinophils and the Th2 cytokine response after the induction of asthma with OVA were similar between the two genotypes. However, the severity and incidence of experimental collagen-induced arthritis (CIA) following the administration of a low dose of endotoxin (LPS) were significantly lower in Nox1-KO. While neither serum levels of autoantibodies nor in vitro cytokine responses were affected by Nox1 deficiency, NOX1 mRNA levels in the spleen significantly increased after the LPS challenge. Among the spleen cells, remarkable LPS-induced upregulation of NOX1 was demonstrated in both CD11b+ monocytes/macrophages and CD11c+ dendritic cells, suggesting that LPS-inducible NOX1 in monocytes/macrophages/dendritic cells may modulate the development of experimental CIA. Therapeutic targeting of NOX1 may therefore control the onset and/or severity of arthritis which is exacerbated by bacterial infection.
Collapse
Affiliation(s)
- Misaki Matsumoto
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto, Japan.
| | - Junjie Liu
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kazumi Iwata
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Masakazu Ibi
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Nozomi Asaoka
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Xueqing Zhang
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Masato Katsuyama
- Radioisotope Center, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Masaya Matsuda
- Laboratory of Immunopharmacology, Faculty of Pharmaceutical Sciences, Setsunan University, Osaka, Japan
| | - Takeshi Nabe
- Laboratory of Immunopharmacology, Faculty of Pharmaceutical Sciences, Setsunan University, Osaka, Japan
| | - Katrin Schröder
- Institute for Cardiovascular Physiology, Goethe-University, Frankfurt, Germany
| | | |
Collapse
|
20
|
Matiašková K, Kavanová L, Kulich P, Gebauer J, Nedbalcová K, Kudláčková H, Tesařík R, Faldyna M. The Role of Antibodies Against the Crude Capsular Extract in the Immune Response of Porcine Alveolar Macrophages to In Vitro Infection of Various Serovars of Glaesserella ( Haemophilus) parasuis. Front Immunol 2021; 12:635097. [PMID: 33968026 PMCID: PMC8101634 DOI: 10.3389/fimmu.2021.635097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 04/06/2021] [Indexed: 11/13/2022] Open
Abstract
In Glässer’s disease outbreaks, Glaesserella (Haemophilus) parasuis has to overcome the non-specific immune system in the lower respiratory tract, the alveolar macrophages. Here we showed that porcine alveolar macrophages (PAMs) were able to recognize and phagocyte G. parasuis with strain-to-strain variability despite the presence of the capsule in virulent (serovar 1, 5, 12) as well in avirulent strains (serovar 6 and 9). The capsule, outer membrane proteins, virulence-associated autotransporters, cytolethal distending toxins and many other proteins have been identified as virulence factors of this bacterium. Therefore, we immunized pigs with the crude capsular extract (cCE) from the virulent G. parasuis CAPM 6475 strain (serovar 5) and evaluated the role of the anti-cCE/post-vaccinal IgG in the immune response of PAMs to in vitro infection with various G. parasuis strains. We demonstrated the specific binding of the antibodies to the cCE by Western-blotting assay and immunoprecipitation as well as the specific binding to the strain CAPM 6475 in transmission electron microscopy. In the cCE, we identified several virulence-associated proteins that were immunoreactive with IgG isolated from sera of immunized pigs. Opsonization of G. parasuis strains by post-vaccinal IgG led to enhanced phagocytosis of G. parasuis by PAMs at the first two hours of infection. Moreover, opsonization increased the oxidative burst and expression/production of both pro- and anti-inflammatory cytokines. The neutralizing effects of these antibodies on the antioxidant mechanisms of G. parasuis may lead to attenuation of its virulence and pathogenicity in vivo. Together with opsonization of bacteria by these antibodies, the host may eliminate G. parasuis in the infection site more efficiently. Based on these results, the crude capsular extract is a vaccine candidate with immunogenic properties.
Collapse
Affiliation(s)
- Katarína Matiašková
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, Brno, Czechia
| | - Lenka Kavanová
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, Brno, Czechia
| | - Pavel Kulich
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Brno, Czechia
| | - Jan Gebauer
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, Brno, Czechia
| | - Kateřina Nedbalcová
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, Brno, Czechia
| | - Hana Kudláčková
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, Brno, Czechia
| | - Radek Tesařík
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, Brno, Czechia
| | - Martin Faldyna
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, Brno, Czechia.,Department of Infectious Diseases and Microbiology, University of Veterinary Sciences, Brno, Czechia
| |
Collapse
|
21
|
Zhang Y, Hill GE, Ge Z, Park NR, Taylor HA, Andreasen V, Tardy L, Kavazis AN, Bonneaud C, Hood WR. Effects of a Bacterial Infection on Mitochondrial Function and Oxidative Stress in a Songbird. Physiol Biochem Zool 2021; 94:71-82. [PMID: 33399516 DOI: 10.1086/712639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AbstractAs a major physiological mechanism involved in cellular renewal and repair, immune function is vital to the body's capacity to support tissue maintenance and organismal survival. Because immune defenses can be energetically expensive, the activities of metabolically active organs, such as the liver, are predicted to increase during infection by most pathogens. However, some pathogens are immunosuppressive, which might reduce the metabolic capacities of select organs to suppress immune response. Mycoplasma gallisepticum (MG) is a well-known immunosuppressive bacterium that infects domestic chickens and turkeys as well as songbirds. In the house finch (Haemorhous mexicanus), which is the primary host for MG among songbird species, MG infects both the respiratory system and the conjunctiva of the eye, causing conspicuous swelling. To study the effect of a systemic bacterial infection on cellular respiration and oxidative damage in the house finch, we measured mitochondrial respiration, mitochondrial membrane potential, reactive oxygen species production, and oxidative damage in the livers of house finches that were wild caught and either infected with MG, as indicated by genetic screening for the pathogen, or free of MG infection. We observed that MG-infected house finches showed significantly lower oxidative lipid and protein damage in liver tissue compared with their uninfected counterparts. Moreover, using complex II substrates, we documented a nonsignificant trend for lower state 3 respiration of liver mitochondria in MG-infected house finches compared with uninfected house finches (P=0.07). These results are consistent with the hypothesis that MG suppresses organ function in susceptible hosts.
Collapse
|
22
|
Checa J, Aran JM. Airway Redox Homeostasis and Inflammation Gone Awry: From Molecular Pathogenesis to Emerging Therapeutics in Respiratory Pathology. Int J Mol Sci 2020; 21:E9317. [PMID: 33297418 PMCID: PMC7731288 DOI: 10.3390/ijms21239317] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 12/05/2020] [Indexed: 02/06/2023] Open
Abstract
As aerobic organisms, we are continuously and throughout our lifetime subjected to an oxidizing atmosphere and, most often, to environmental threats. The lung is the internal organ most highly exposed to this milieu. Therefore, it has evolved to confront both oxidative stress induced by reactive oxygen species (ROS) and a variety of pollutants, pathogens, and allergens that promote inflammation and can harm the airways to different degrees. Indeed, an excess of ROS, generated intrinsically or from external sources, can imprint direct damage to key structural cell components (nucleic acids, sugars, lipids, and proteins) and indirectly perturb ROS-mediated signaling in lung epithelia, impairing its homeostasis. These early events complemented with efficient recognition of pathogen- or damage-associated recognition patterns by the airway resident cells alert the immune system, which mounts an inflammatory response to remove the hazards, including collateral dead cells and cellular debris, in an attempt to return to homeostatic conditions. Thus, any major or chronic dysregulation of the redox balance, the air-liquid interface, or defects in epithelial proteins impairing mucociliary clearance or other defense systems may lead to airway damage. Here, we review our understanding of the key role of oxidative stress and inflammation in respiratory pathology, and extensively report current and future trends in antioxidant and anti-inflammatory treatments focusing on the following major acute and chronic lung diseases: acute lung injury/respiratory distress syndrome, asthma, chronic obstructive pulmonary disease, pulmonary fibrosis, and cystic fibrosis.
Collapse
Affiliation(s)
| | - Josep M. Aran
- Immune-Inflammatory Processes and Gene Therapeutics Group, IDIBELL, L’Hospitalet de Llobregat, 08908 Barcelona, Spain;
| |
Collapse
|
23
|
Göllner M, Ihrig-Biedert I, Petermann V, Saurin S, Oelze M, Kröller-Schön S, Vujacic-Mirski K, Kuntic M, Pautz A, Daiber A, Kleinert H. NOX2ko Mice Show Largely Increased Expression of a Mutated NOX2 mRNA Encoding an Inactive NOX2 Protein. Antioxidants (Basel) 2020; 9:antiox9111043. [PMID: 33114493 PMCID: PMC7692237 DOI: 10.3390/antiox9111043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/15/2020] [Accepted: 10/20/2020] [Indexed: 11/16/2022] Open
Abstract
Background: The superoxide-generating enzyme nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX2 or gp91phox, the phagocytic isoform) was reported as a major source of oxidative stress in various human diseases. Genetic deletion is widely used to study the impact of NOX2-derived reactive oxygen species (ROS) on disease development and progression in various animal models. Here, we investigate why NOX2 knockout mice show no NOX2 activity but express NOX2 mRNA and protein. Methods and Results: Oxidative burst (NOX2-dependent formation of ROS) was measured by L-012-based chemiluminescence and was largely absent in whole blood of NOX2 knockout mice. Protein expression was still detectable in different tissues of the NOX2 knockout mice, at the expected and a slightly lower molecular weight (determined by Western blot). The NOX2 gene was even largely enhanced at its expressional level in NOX2 knockout mice. RNA sequencing revealed a modified NOX2 mRNA in the knockout mice that is obviously translated to a truncated inactive mutant enzyme. Conclusion: Although the commercial NOX2 knockout mice display no considerable enzymatic NOX2 activity, expression of the NOX2 gene (when using standard primers) and protein (when using antibodies binding to the carboxy-terminal end) can still be detected, which may lead to confusion among investigators.
Collapse
Affiliation(s)
- Monika Göllner
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.G.); (I.I.-B.); (V.P.); (S.S.); (A.P.)
| | - Irmgard Ihrig-Biedert
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.G.); (I.I.-B.); (V.P.); (S.S.); (A.P.)
| | - Victoria Petermann
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.G.); (I.I.-B.); (V.P.); (S.S.); (A.P.)
| | - Sabrina Saurin
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.G.); (I.I.-B.); (V.P.); (S.S.); (A.P.)
| | - Matthias Oelze
- Laboratory of Molecular Cardiology, Department of Cardiology 1, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.O.); (S.K.-S.); (K.V.-M.); (M.K.)
| | - Swenja Kröller-Schön
- Laboratory of Molecular Cardiology, Department of Cardiology 1, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.O.); (S.K.-S.); (K.V.-M.); (M.K.)
| | - Ksenija Vujacic-Mirski
- Laboratory of Molecular Cardiology, Department of Cardiology 1, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.O.); (S.K.-S.); (K.V.-M.); (M.K.)
| | - Marin Kuntic
- Laboratory of Molecular Cardiology, Department of Cardiology 1, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.O.); (S.K.-S.); (K.V.-M.); (M.K.)
| | - Andrea Pautz
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.G.); (I.I.-B.); (V.P.); (S.S.); (A.P.)
| | - Andreas Daiber
- Laboratory of Molecular Cardiology, Department of Cardiology 1, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.O.); (S.K.-S.); (K.V.-M.); (M.K.)
- Correspondence: (A.D.); (H.K.); Tel.: +49-(6131)-17-6280 (A.D.); +49-(6131)-17-9150 (H.K.)
| | - Hartmut Kleinert
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany; (M.G.); (I.I.-B.); (V.P.); (S.S.); (A.P.)
- Correspondence: (A.D.); (H.K.); Tel.: +49-(6131)-17-6280 (A.D.); +49-(6131)-17-9150 (H.K.)
| |
Collapse
|
24
|
Sugimoto Y, Endo D, Aratani Y. Mice Deficient in NOX2 Display Severe Thymic Atrophy, Lymphopenia, and Reduced Lymphopoiesis in a Zymosan-Induced Model of Systemic Inflammation. Inflammation 2020; 44:371-382. [PMID: 32939668 DOI: 10.1007/s10753-020-01342-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/28/2020] [Accepted: 09/08/2020] [Indexed: 10/23/2022]
Abstract
Patients with chronic granulomatous disease (CGD) who have mutated phagocyte NADPH oxidase are susceptible to infections due to reduced reactive oxygen species production and exhibit autoimmune and inflammatory diseases in the absence of evident infection. Neutrophils and macrophages have been extensively studied since phagocyte NADPH oxidase is mainly found only in them, while the impact of its deficiency on lymphocyte cellularity is less well characterized. We showed herein a zymosan-induced systemic inflammation model that CGD mice deficient in the phagocyte NADPH oxidase gp91phox subunit (NOX2) exhibited more severe thymic atrophy associated with peripheral blood and splenic lymphopenia and reduced lymphopoiesis in the bone marrow in comparison with the wild-type mice. Conversely, the zymosan-exposed CGD mice suffered from more remarkable neutrophilic lung inflammation, circulating and splenic neutrophilia, and enhanced granulopoiesis compared with those in zymosan-exposed wild-type mice. Overall, this study provided evidence that NOX2 deficiency exhibits severe thymic atrophy and lymphopenia concomitant with enhanced neutrophilic inflammation in a zymosan-induced systemic inflammation model.
Collapse
Affiliation(s)
- Yu Sugimoto
- Graduate School of Nanobioscience, Yokohama City University, Seto 22-2, Kanazawa, Yokohama, 236-0027, Japan
| | - Daiki Endo
- Graduate School of Nanobioscience, Yokohama City University, Seto 22-2, Kanazawa, Yokohama, 236-0027, Japan
| | - Yasuaki Aratani
- Graduate School of Nanobioscience, Yokohama City University, Seto 22-2, Kanazawa, Yokohama, 236-0027, Japan.
| |
Collapse
|
25
|
Holdfeldt A, Lind S, Hesse C, Dahlgren C, Forsman H. The PAR4-derived pepducin P4Pal 10 lacks effect on neutrophil GPCRs that couple to Gαq for signaling but distinctly modulates function of the Gαi-coupled FPR2 and FFAR2. Biochem Pharmacol 2020; 180:114143. [PMID: 32653592 DOI: 10.1016/j.bcp.2020.114143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/03/2020] [Accepted: 07/07/2020] [Indexed: 12/18/2022]
Abstract
A novel mechanism of action was described for the protease-activated receptor 4 (PAR4)-derived pepducin (P4Pal10), when it was shown to exhibit inhibitory efficacy towards G protein coupling to multiple Gαq-coupled receptors (Carr, R., 3rd et al., Mol. Pharmacol. 2016(89) 94). We could confirm that P4Pal10, similar to an earlier-characterized Gαq inhibitor (YM-254890), inhibited platelet aggregation induced by agonists for the Gαq-coupled receptors PAR1 and PAR4. Next, we applied P4Pal10 as a tool compound and investigated its modulatory effect on several Gαq- and Gαi-coupled GPCRs expressed by human neutrophils. P4Pal10 had, however, no inhibitory effects on signaling downstream of the Gαq-coupled receptors for ATP (P2Y2R) and PAF (PAFR). Instead, P4Pal10 inhibited signaling downstream the Gαi-coupled FPR2. The inhibition was not due to a direct effect on Gαi as the closely related FPR1 was unaffected. In addition, we found that the pepducin activated allosterically modulated short chain fatty acid receptor (FFAR2), a Gαi/Gαq coupled GPCR that is functionally expressed in neutrophils. Taken together, we show that pepducins are unique tool-compounds for mechanistic studies of GPCR signaling and modulation in neutrophils. The data presented add also lipopeptides into the known ligand recognition lists for the two pattern recognition receptors FPR2 and FFAR2, receptors that primarily sense formylated peptides and short free fatty acids, respectively, inflammatory mediators of microbial origin.
Collapse
Affiliation(s)
- André Holdfeldt
- Department of Rheumatology and Inflammation Research, Institute of Medicine at the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Simon Lind
- Department of Rheumatology and Inflammation Research, Institute of Medicine at the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Camilla Hesse
- Department for Laboratory Medicine, Institute for Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Claes Dahlgren
- Department of Rheumatology and Inflammation Research, Institute of Medicine at the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Huamei Forsman
- Department of Rheumatology and Inflammation Research, Institute of Medicine at the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| |
Collapse
|
26
|
Maqbool A, Watt NT, Haywood N, Viswambharan H, Skromna A, Makava N, Visnagri A, Shawer HM, Bridge K, Muminov SK, Griffin K, Beech DJ, Wheatcroft SB, Porter KE, Simmons KJ, Sukumar P, Shah AM, Cubbon RM, Kearney MT, Yuldasheva NY. Divergent effects of genetic and pharmacological inhibition of Nox2 NADPH oxidase on insulin resistance-related vascular damage. Am J Physiol Cell Physiol 2020; 319:C64-C74. [PMID: 32401607 PMCID: PMC7468885 DOI: 10.1152/ajpcell.00389.2019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Insulin resistance leads to excessive endothelial cell (EC) superoxide generation and accelerated atherosclerosis. The principal source of superoxide from the insulin-resistant endothelium is the Nox2 isoform of NADPH oxidase. Here we examine the therapeutic potential of Nox2 inhibition on superoxide generation in saphenous vein ECs (SVECs) from patients with advanced atherosclerosis and type 2 diabetes and on vascular function, vascular damage, and lipid deposition in apolipoprotein E-deficient (ApoE−/−) mice with EC-specific insulin resistance (ESMIRO). To examine the effect of genetic inhibition of Nox2, ESMIRO mice deficient in ApoE−/− and Nox2 (ESMIRO/ApoE−/−/Nox2−/y) were generated and compared with ESMIRO/ApoE−/−/Nox2+/y littermates. To examine the effect of pharmacological inhibition of Nox2, we administered gp91dstat or scrambled peptide to ESMIRO/ApoE−/− mice. SVECs from diabetic patients had increased expression of Nox2 protein with concomitant increase in superoxide generation, which could be reduced by the Nox2 inhibitor gp91dstat. After 12 wk Western diet, ESMIRO/ApoE−/−/Nox2−/y mice had reduced EC superoxide generation and greater aortic relaxation to acetylcholine. ESMIRO/ApoE−/−/Nox2−/y mice developed more lipid deposition in the thoraco-abdominal aorta with multiple foci of elastin fragmentation at the level of the aortic sinus and greater expression of intercellular adhesion molecule-1 (ICAM-1). Gp91dstat reduced EC superoxide and lipid deposition in the thoraco-abdominal aorta of ESMIRO/ApoE−/− mice without causing elastin fragmentation or increased ICAM-1 expression. These results demonstrate that insulin resistance is characterized by increased Nox2-derived vascular superoxide. Complete deletion of Nox2 in mice with EC insulin resistance exacerbates, whereas partial pharmacological Nox2 inhibition protects against, insulin resistance-induced vascular damage.
Collapse
Affiliation(s)
- Azhar Maqbool
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Nicole T Watt
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Natalie Haywood
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Hema Viswambharan
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Anna Skromna
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Natalia Makava
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Asjad Visnagri
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Heba M Shawer
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Katherine Bridge
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | | | - Kathryn Griffin
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - David J Beech
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Stephen B Wheatcroft
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Karen E Porter
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Katie J Simmons
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Piruthivi Sukumar
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Ajay M Shah
- British Heart Foundation, Centre of Research Excellence, King's College London, London, United Kingdom
| | - Richard M Cubbon
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Mark T Kearney
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Nadira Y Yuldasheva
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| |
Collapse
|
27
|
Li QY, Li P, Myint Phyu Sin Htwe N, Shangguan KK, Liang Y. Antepenultimate residue at the C-terminus of NADPH oxidase RBOHD is critical for its function in the production of reactive oxygen species in Arabidopsis. J Zhejiang Univ Sci B 2020; 20:713-727. [PMID: 31379142 PMCID: PMC6700349 DOI: 10.1631/jzus.b1900105] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/12/2019] [Indexed: 12/14/2022]
Abstract
Production of reactive oxygen species (ROS) is a conserved immune response primarily mediated by NADPH oxidases (NOXs), also known in plants as respiratory burst oxidase homologs (RBOHs). Most microbe-associated molecular patterns (MAMPs) trigger a very fast and transient ROS burst in plants. However, recently, we found that lipopolysaccharides (LPS), a typical bacterial MAMP, triggered a biphasic ROS burst. In this study, we isolated mutants defective in LPS-triggered biphasic ROS burst (delt) in Arabidopsis, and cloned the DELT1 gene that was shown to encode RBOHD. In the delt1-2 allele, the antepenultimate residue, glutamic acid (E919), at the C-terminus of RBOHD was mutated to lysine (K). E919 is a highly conserved residue in NADPH oxidases, and a mutation of the corresponding residue E568 in human NOX2 has been reported to be one of the causes of chronic granulomatous disease. Consistently, we found that residue E919 was indispensable for RBOHD function in the MAMP-induced ROS burst and stomatal closure. It has been suggested that the mutation of this residue in other NADPH oxidases impairs the protein's stability and complex assembly. However, we found that the E919K mutation did not affect RBOHD protein abundance or the ability of protein association, suggesting that the residue E919 in RBOHD might have a regulatory mechanism different from that of other NOXs. Taken together, our results confirm that the antepenultimate residue E is critical for NADPH oxidases and provide a new insight into the regulatory mechanisms of RBOHD.
Collapse
|
28
|
Blancas-Galicia L, Santos-Chávez E, Deswarte C, Mignac Q, Medina-Vera I, León-Lara X, Roynard M, Scheffler-Mendoza SC, Rioja-Valencia R, Alvirde-Ayala A, Lugo Reyes SO, Staines-Boone T, García-Campos J, Saucedo-Ramírez OJ, Del-Río_Navarro BE, Zamora-Chávez A, López-Larios A, García-Pavón-Osorio S, Melgoza-Arcos E, Canseco-Raymundo MR, Mogica-Martínez D, Venancio-Hernández M, Pacheco-Rosas D, Pedraza-Sánchez S, Guevara-Cruz M, Saracho-Weber F, Gámez-González B, Wakida-Kuzunoki G, Morán-Mendoza AR, Macías-Robles AP, Ramírez-Rivera R, Vargas-Camaño E, Zarate-Hernández C, Gómez-Tello H, Ramírez-Sánchez E, Ruíz-Hernández F, Ramos-López D, Acuña-Martínez H, García-Cruz ML, Román-Jiménez MG, González-Villarreal MG, Álvarez-Cardona A, Llamas-Guillén BA, Cuellar-Rodríguez J, Olaya-Vargas A, Ramírez-Uribe N, Boisson-Dupuis S, Casanova JL, Espinosa-Rosales FJ, Serafín-López J, Yamazaki-Nakashimada M, Espinosa-Padilla S, Bustamante J. Genetic, Immunological, and Clinical Features of the First Mexican Cohort of Patients with Chronic Granulomatous Disease. J Clin Immunol 2020; 40:475-493. [DOI: 10.1007/s10875-020-00750-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 01/15/2020] [Indexed: 12/21/2022]
|
29
|
Favia M, de Bari L, Bobba A, Atlante A. An Intriguing Involvement of Mitochondria in Cystic Fibrosis. J Clin Med 2019; 8:jcm8111890. [PMID: 31698802 PMCID: PMC6912654 DOI: 10.3390/jcm8111890] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 10/31/2019] [Accepted: 11/04/2019] [Indexed: 12/16/2022] Open
Abstract
Cystic fibrosis (CF) occurs when the cystic fibrosis transmembrane conductance regulator (CFTR) protein is not synthetized and folded correctly. The CFTR protein helps to maintain the balance of salt and water on many body surfaces, such as the lung surface. When the protein is not working correctly, chloride becomes trapped in cells, then water cannot hydrate the cellular surface and the mucus covering the cells becomes thick and sticky. Furthermore, a defective CFTR appears to produce a redox imbalance in epithelial cells and extracellular fluids and to cause an abnormal generation of reactive oxygen species: as a consequence, oxidative stress has been implicated as a causative factor in the aetiology of the process. Moreover, massive evidences show that defective CFTR gives rise to extracellular GSH level decrease and elevated glucose concentrations in airway surface liquid (ASL), thus encouraging lung infection by pathogens in the CF advancement. Recent research in progress aims to rediscover a possible role of mitochondria in CF. Here the latest new and recent studies on mitochondrial bioenergetics are collected. Surprisingly, they have enabled us to ascertain that mitochondria have a leading role in opposing the high ASL glucose level as well as oxidative stress in CF.
Collapse
Affiliation(s)
- Maria Favia
- Istituto di Biomembrane, Bioenergetica e Biotecnologie Molecolari—CNR, Via G. Amendola 122/O, 70126 Bari, Italy; (L.d.B.); (A.B.)
- Dipartimento di Bioscienze, Biotecnologie e Biofarmaceutica, Università di Bari, Via E. Orabona 4, 70126 Bari, Italy
- Correspondence: (M.F.); (A.A.)
| | - Lidia de Bari
- Istituto di Biomembrane, Bioenergetica e Biotecnologie Molecolari—CNR, Via G. Amendola 122/O, 70126 Bari, Italy; (L.d.B.); (A.B.)
| | - Antonella Bobba
- Istituto di Biomembrane, Bioenergetica e Biotecnologie Molecolari—CNR, Via G. Amendola 122/O, 70126 Bari, Italy; (L.d.B.); (A.B.)
| | - Anna Atlante
- Istituto di Biomembrane, Bioenergetica e Biotecnologie Molecolari—CNR, Via G. Amendola 122/O, 70126 Bari, Italy; (L.d.B.); (A.B.)
- Correspondence: (M.F.); (A.A.)
| |
Collapse
|
30
|
Liu FC, Yu HP, Chen PJ, Yang HW, Chang SH, Tzeng CC, Cheng WJ, Chen YR, Chen YL, Hwang TL. A novel NOX2 inhibitor attenuates human neutrophil oxidative stress and ameliorates inflammatory arthritis in mice. Redox Biol 2019; 26:101273. [PMID: 31325723 PMCID: PMC6639650 DOI: 10.1016/j.redox.2019.101273] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/04/2019] [Accepted: 07/09/2019] [Indexed: 12/18/2022] Open
Abstract
Neutrophil infiltration plays a significant pathological role in inflammatory diseases. NADPH oxidase type 2 (NOX2) is a respiratory burst oxidase that generates large amounts of superoxide anion (O2•−) and subsequent other reactive oxygen species (ROS). NOX2 is an emerging therapeutic target for treating neutrophilic inflammatory diseases. Herein, we show that 4-[(4-(dimethylamino)butoxy)imino]-1-methyl-1H-benzo[f]indol-9(4H)-one (CYR5099) acts as a NOX2 inhibitor and exerts a protective effect against complete Freund's adjuvant (CFA)-induced inflammatory arthritis in mice. CYR5099 restricted the production of O2•− and ROS, but not the elastase release, in human neutrophils activated with various stimulators. The upstream signaling pathways of NOX2 were not inhibited by CYR5099. Significantly, CYR5099 inhibited NOX2 activity in activated human neutrophils and in reconstituted subcellular assays. In addition, CYR5099 reduced ROS production, neutrophil infiltration, and edema in CFA-induced arthritis in mice. Our findings suggest that CYR5099 is a NOX2 inhibitor and has therapeutic potential for treating neutrophil-dominant oxidative inflammatory disorders. CYR5099 is a NOX2 inhibitor. CYR5099 inhibits human neutrophil respiratory burst and adhesion. CYR5099 reduces ROS production, neutrophil infiltration, and edema on mouse arthritis. CYR5099 has potential to treat neutrophil-mediated inflammatory diseases.
Collapse
Affiliation(s)
- Fu-Chao Liu
- College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan
| | - Huang-Ping Yu
- College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan
| | - Po-Jen Chen
- Department of Cosmetic Science, Providence University, Taichung, 433, Taiwan; Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
| | - Hsuan-Wu Yang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
| | - Shih-Hsin Chang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan; Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, 333, Taiwan
| | - Cherng-Chyi Tzeng
- Department of Medicinal and Applied Chemistry, College of Life Science, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Department of Medical Research, Kaohsiung Medical University-Hospital, Kaohsiung, 807, Taiwan
| | - Wei-Jen Cheng
- Graduate Institute of Clinical Medicine, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan; Department of Traditional Chinese Medicine, Center of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan
| | - You-Ren Chen
- Department of Medicinal and Applied Chemistry, College of Life Science, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Department of Medical Research, Kaohsiung Medical University-Hospital, Kaohsiung, 807, Taiwan
| | - Yeh-Long Chen
- Department of Medicinal and Applied Chemistry, College of Life Science, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Department of Medical Research, Kaohsiung Medical University-Hospital, Kaohsiung, 807, Taiwan.
| | - Tsong-Long Hwang
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan; Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan; Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan, 333, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 243, Taiwan.
| |
Collapse
|
31
|
Liu Q, Sundqvist M, Li W, Holdfeldt A, Zhang L, Björkman L, Bylund J, Dahlgren C, Wang C, Zhao X, Forsman H. Functional characteristics of circulating granulocytes in severe congenital neutropenia caused by ELANE mutations. BMC Pediatr 2019; 19:189. [PMID: 31176364 PMCID: PMC6555947 DOI: 10.1186/s12887-019-1556-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 05/22/2019] [Indexed: 01/22/2023] Open
Abstract
Background Neutrophils and eosinophils are multifunctional granulocytes derived from common myelocytic-committed progenitor cells. Severe congenital neutropenia 1 (SCN1) caused by ELANE mutations is a rare disease characterized by very low numbers of circulating neutrophils. Little is known about the functional characteristics of the SCN1 granulocytes, except that eosinophilia has been noticed in both bone marrow and peripheral blood. In this study, we profiled the number and function of granulocytes in patients suffering from SCN1. Methods Nine patients diagnosed with SCN1 were enrolled in this study and absolute counts of eosinophils and neutrophils from bone marrow aspirates and peripheral blood samples were analysed. In addition, Ficoll-Paque enriched granulocytes from patients and healthy controls were analysed for specific eosinophil and neutrophil markers using flow cytometry and for NADPH-oxidase activity-profile by chemiluminescence. Results Our data demonstrate a skewed granulocyte population in SCN1 patients dominated by eosinophils in both bone marrow and peripheral blood. The latter was detected only by blood smear examination, but not by automated blood analysers. Furthermore, we show that the SCN1 eosinophils exerted normal production of reactive oxygen species generated by the NADPH-oxidase, however the response was profoundly different from that of healthy control neutrophils. Conclusions SCN1 patients with ELANE mutations suffer from neutropenia yet display eosinophilia in the bone marrow and blood, as revealed by smear examination but not by automatic blood analysers. The SCN1 eosinophils are functionally normal regarding production of reactive oxygen species (ROS). However, the ROS profile produced by eosinophils differs drastically from that of neutrophils isolated from the same blood donor, implying that the eosinophilia in SCN1 cannot compensate for the loss of neutrophils regarding ROS-mediated functions.
Collapse
Affiliation(s)
- Qiao Liu
- Children's hospital, Chongqing Medical University, Chongqing, China
| | - Martina Sundqvist
- Department of Rheumatology and Inflammation Research, University of Gothenburg, Gothenburg, Sweden
| | - Wenyan Li
- Children's hospital, Chongqing Medical University, Chongqing, China
| | - André Holdfeldt
- Department of Rheumatology and Inflammation Research, University of Gothenburg, Gothenburg, Sweden
| | - Liang Zhang
- Children's hospital, Chongqing Medical University, Chongqing, China
| | - Lena Björkman
- Department of Rheumatology and Inflammation Research, University of Gothenburg, Gothenburg, Sweden.,Rheumatology Unit, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Johan Bylund
- Department of Oral Microbiology and Immunology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Claes Dahlgren
- Department of Rheumatology and Inflammation Research, University of Gothenburg, Gothenburg, Sweden
| | - Cai Wang
- Children's hospital, Chongqing Medical University, Chongqing, China
| | - Xiaodong Zhao
- Children's hospital, Chongqing Medical University, Chongqing, China.
| | - Huamei Forsman
- Department of Rheumatology and Inflammation Research, University of Gothenburg, Gothenburg, Sweden
| |
Collapse
|
32
|
Derry PJ, Nilewski LG, Sikkema WKA, Mendoza K, Jalilov A, Berka V, McHugh EA, Tsai AL, Tour JM, Kent TA. Catalytic oxidation and reduction reactions of hydrophilic carbon clusters with NADH and cytochrome C: features of an electron transport nanozyme. NANOSCALE 2019; 11:10791-10807. [PMID: 31134256 PMCID: PMC10863654 DOI: 10.1039/c9nr00807a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Previously, our group reported on the promising efficacy of poly(ethylene glycol)-hydrophilic carbon clusters (PEG-HCCs) to work as broadly active and high capacity antioxidants in brain ischemia and injury models including stroke and traumatic brain injury coupled with hemorrhagic shock. PEG-HCCs are a carbon nanomaterial derived from harsh oxidation of single wall carbon nanotubes and covalently modified with poly(ethylene glycol). They retain no tubular remnants and are composed of a highly oxidized carbon core functionalized with epoxy, peroxyl, quinone, ketone, carboxylate, and hydroxyl groups. HCCs are the redox active carbon core of PEG-HCCs, which have a broad reduction potential range starting at +200 mV and extending to -2 V. Here we describe a new property of these materials: the ability to catalytically transfer electrons between key surrogates and proteins of the mitochondrial electron transport complex in a catalytic fashion consistent with the concept of a nanozyme. The estimated reduction potential of PEG-HCCs is similar to that of ubiquinone and they enabled the catalytic transfer of electrons from low reduction potential species to higher reduction electron transport complex constituents. PEG-HCCs accelerated the reduction of resazurin (a test indicator of mitochondrial viability) and cytochrome c by NADH and ascorbic acid in solution. Kinetic experiments suggested a transient tertiary complex. Electron paramagnetic resonance demonstrated NADH increased the magnitude of PEG-HCCs' intrinsic radical, which then reduced upon subsequent addition of cytochrome c or resazurin. Deconvolution microscopy identified PEG-HCCs in close proximity to mitochondria after brief incubation with cultured SHSY-5Y human neuroblastoma cells. Compared to methylene blue (MB), considered a prototypical small molecule electron transport shuttle, PEG-HCCs were more protective against toxic effects of hydrogen peroxide in vitro and did not demonstrate impaired cell viability as did MB. PEG-HCCs were protective in vitro when cells were exposed to sodium cyanide, a mitochondrial complex IV poison. Because mitochondria are a major source of free radicals in pathology, we suggest that this newly described nanozyme action helps explain their in vivo efficacy in a range of injury models. These findings may also extend their use to mitochondrial disorders.
Collapse
Affiliation(s)
- Paul J. Derry
- Texas A&M Health Science Center Institute of
Biosciences and Technology, Houston, Texas 77030, United States
- Neurology and Center for Translational Research in
Inflammatory Diseases, Michel E. DeBakey VA Medical Center, Houston, Texas 77030,
United States
| | - Lizanne G. Nilewski
- Department of Chemistry, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - William K. A. Sikkema
- Department of Chemistry, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Kimberly Mendoza
- Department of Chemistry, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Almaz Jalilov
- Department of Chemistry and Center for Integrative
Petroleum Research, King Fahd University of Petroleum and Minerals, Dhahran, Saudi
Arabia, 31261
| | - Vladimir Berka
- Hematology, Internal Medicine, University of Texas
Houston Medical School, Houston, Texas 77030, United States
| | - Emily A. McHugh
- Department of Chemistry, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Ah-Lim Tsai
- Hematology, Internal Medicine, University of Texas
Houston Medical School, Houston, Texas 77030, United States
| | - James M. Tour
- Department of Chemistry, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- The NanoCarbon Center, Rice University, 6100 Main
Street, Houston, Texas 77005, United States
- Department of Materials Science and
NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United
States
| | - Thomas A. Kent
- Department of Chemistry, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Stanley H. Appel Department of Neurology, Houston
Methodist Hospital and Institute of Academic Medicine, Houston, Texas 77030, United
States
| |
Collapse
|
33
|
Deochand DK, Pande A, Meariman JK, Grove A. Redox Sensing by PecS from the Plant Pathogen Pectobacterium atrosepticum and Its Effect on Gene Expression and the Conformation of PecS-Bound Promoter DNA. Biochemistry 2019; 58:2564-2575. [PMID: 31046241 DOI: 10.1021/acs.biochem.9b00288] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The plant pathogen Pectobacterium atrosepticum encounters a stressful environment when it colonizes the plant apoplast. Chief among the stressors are the reactive oxygen species (ROS) that are produced by the host as a first line of defense. Bacterial transcription factors in turn use these signals as cues to upregulate expression of virulence-associated genes. We have previously shown that the transcription factor PecS from P. atrosepticum binds the promoters that drive expression of pecS and pecM, which encodes an efflux pump, to repress gene expression. We show here that addition of oxidant relieves repression in vivo and in vitro. While reduced PecS distorts promoter DNA on binding, oxidized PecS does not, as evidenced by DNaseI footprinting. PecS oxidation is reversible, as shown by an oxidant-dependent quenching of the intrinsic tryptophan fluorescence that is completely reversed upon addition of a reducing agent. Cysteine 45 positioned at the PecS dimer interface is the redox sensor. Reduced PecS-C45A causes less DNA distortion on binding compared to wild-type PecS; addition of an oxidant has no effect on binding, and PecS-C45A cannot repress gene expression. Our data suggest that reduced PecS distorts its cognate DNA on binding, perhaps inducing a conformation in which promoter elements are suboptimally aligned for RNA polymerase binding, resulting in transcriptional repression. In contrast, oxidized PecS binds promoter DNA such that RNA polymerase may successfully compete with PecS for binding, allowing gene expression. This mode of regulation would facilitate induction of the PecS regulon when the bacteria encounter host-derived ROS in the plant apoplast.
Collapse
Affiliation(s)
- Dinesh K Deochand
- Department of Biological Sciences , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| | - Anuja Pande
- Department of Biological Sciences , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| | - Jacob K Meariman
- Department of Biological Sciences , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| | - Anne Grove
- Department of Biological Sciences , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| |
Collapse
|
34
|
Streptolysin S induces mitochondrial damage and macrophage death through inhibiting degradation of glycogen synthase kinase-3β in Streptococcus pyogenes infection. Sci Rep 2019; 9:5371. [PMID: 30926881 PMCID: PMC6440947 DOI: 10.1038/s41598-019-41853-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 03/18/2019] [Indexed: 12/20/2022] Open
Abstract
Group A Streptococcus (GAS) infection is associated with a variety of human diseases. Previous studies indicate GAS infection leads to RAW264.7 cell death, but the mechanism is unclear. Here, analyzing the timing of reactive oxygen species (ROS) production and using mitochondrial ROS scavenger, we found the wild type GAS-induced RAW264.7 cell death was associated with mitochondrial ROS. The wild type GAS infection could activate glycogen synthase kinase-3β (GSK-3β). Inhibition of GSK-3β activity by lithium chloride or decreasing GSK-3β expression by lentivirus-mediated short hairpin RNA for GSK-3β could not only decrease the wild type GAS-induced mitochondrial ROS generation, mitochondria damage and cell death, but also reduced GAS intracellular replication. Streptolysin S (SLS), a GAS toxin, played the important role on GAS-induced macrophage death. Compared to the wild type GAS with its isogenic sagB mutant (SLS mutant)-infected macrophages, we found sagB mutant infection caused less mitochondrial ROS generation and cell death than those of the wild type GAS-infected ones. Furthermore, the sagB mutant, but not the wild type or the sagB-complementary mutant, could induce GSK-3β degradation via a proteasome-dependent pathway. These results suggest that a new mechanism of SLS-induced macrophage death was through inhibiting GSK-3β degradation and further enhancing mitochondrial damage.
Collapse
|
35
|
Novel function of PiT1/SLC20A1 in LPS-related inflammation and wound healing. Sci Rep 2019; 9:1808. [PMID: 30755642 PMCID: PMC6372663 DOI: 10.1038/s41598-018-37551-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 11/27/2018] [Indexed: 12/17/2022] Open
Abstract
PiT1/SLC20A1 is an inorganic phosphate transporter with additional functions including the regulation of TNFα-induced apoptosis, erythropoiesis, cell proliferation and insulin signaling. Recent data suggest a relationship between PiT1 and NF-κB-dependent inflammation: (i) Pit1 mRNA is up-regulated in the context of NF-κB pathway activation; (ii) NF-κB target gene transcription is decreased in PiT1-deficient conditions. This led us to investigate the role of PiT1 in lipopolysaccharide (LPS)-induced inflammation. MCP-1 and IL-6 concentrations were impaired in PiT1-deficient bone marrow derived macrophages (BMDMs) upon LPS stimulation. Lower MCP-1 and IL-6 serum levels were observed in Mx1-Cre; Pit1lox/lox mice dosed intraperitoneally with LPS. Lower PiT1 expression correlated with decreased in vitro wound healing and lower reactive oxygen species levels. Reduced IκB degradation and lower p65 nuclear translocation were observed in PiT1-deficient cells stimulated with LPS. Conversely, PiT1 expression was induced in vitro upon LPS stimulation. Addition of an NF-κB inhibitor abolished LPS-induced PiT1 expression. Furthermore, we showed that p65 expression activated Pit1 promoter activity. Finally, ChIP assays demonstrated that p65 directly binds to the mPit1 promoter in response to LPS. These data demonstrate a completely novel function of PiT1 in the response to LPS and provide mechanistic insights into the regulation of PiT1 expression by NF-κB.
Collapse
|
36
|
Rapid and sensitive detection of NADPH via mBFP-mediated enhancement of its fluorescence. PLoS One 2019; 14:e0212061. [PMID: 30742684 PMCID: PMC6370209 DOI: 10.1371/journal.pone.0212061] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 01/26/2019] [Indexed: 01/02/2023] Open
Abstract
The reduced form of nicotinamide adenine dinucleotide phosphate (NADPH) functions as a reducing agent involved in many biosynthetic and antioxidant reactions in cells. Therefore, a lots of detection or assaying method of this cofactor are developed and used broadly in various research and application fields. These detection or assay tools, however, have often some problems, such as the low sensitivity, susceptibility to environmental interference and time-consuming pretreatment steps, remaining hurdle to successful quantification of NADPH or its derivatives accurately and immediately. Herein, we present a rapid (assay time < 30 s) and sensitive (detection limit < 2 pmol) detection method of NADPH using metagenome-derived blue fluorescent protein (mBFP), a protein capable of significantly enhancing NADPH fluorescence upon binding to this cofactor. Our method takes advantage of the high specificity of mBFP to NADPH and the immediate fluorescence enhancement upon the addition of mBFP to a solution of interest containing NADPH. We can apply this detection scheme to directly quantitative assessment of NADP(H)-dependent enzyme activities in-vitro, and further accessed to quantitative assay of other nicotine amide cofactors, such as NAD+ and NADH, by coupling assay using NAD(H) kinase. Thus, our method enabled us to quantitatively assess the activity of nicotinamide cofactor-associated enzymes in both bacterial and human cell lysates.
Collapse
|
37
|
Burg AR, Tse HM. Redox-Sensitive Innate Immune Pathways During Macrophage Activation in Type 1 Diabetes. Antioxid Redox Signal 2018; 29:1373-1398. [PMID: 29037052 PMCID: PMC6166692 DOI: 10.1089/ars.2017.7243] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
SIGNIFICANCE Type 1 diabetes (T1D) is an autoimmune disease resulting in β-cell destruction mediated by islet-infiltrating leukocytes. The role of oxidative stress in human and murine models of T1D is highly significant as these noxious molecules contribute to diabetic complications and β-cell lysis, but their direct impact on dysregulated autoimmune responses is highly understudied. Pro-inflammatory macrophages play a vital role in the initiation and effector phases of T1D by producing free radicals and pro-inflammatory cytokines to facilitate β-cell destruction and to present antigen to autoreactive T cells. Recent Advances: Redox modulation of macrophage functions may play critical roles in autoimmunity. These include enhancing pro-inflammatory innate immune signaling pathways in response to environmental triggers, enforcing an M1 macrophage differentiation program, controlling antigen processing, and altering peptide recognition by oxidative post-translational modification. Therefore, an oxidative environment may act on multiple macrophage functions to orchestrate T1D pathogenesis. CRITICAL ISSUES Mechanisms involved in the initiation of T1D remain unclear, making preventive and early therapeutics difficult to develop. Although many of these advances in the redox regulation of macrophages are in their infancy, they provide insight into how oxidative stress aids in the precipitating event of autoimmune activation. FUTURE DIRECTIONS Future studies should be aimed at mechanistically determining which redox-regulated macrophage functions are pertinent in T1D pathogenesis, as well as at investigating potential targetable therapeutics to halt and/or dampen innate immune activation in T1D.
Collapse
Affiliation(s)
- Ashley R Burg
- Department of Microbiology, Comprehensive Diabetes Center, University of Alabama at Birmingham , Birmingham, Alabama
| | - Hubert M Tse
- Department of Microbiology, Comprehensive Diabetes Center, University of Alabama at Birmingham , Birmingham, Alabama
| |
Collapse
|
38
|
Oxidative stress in chronic lung disease: From mitochondrial dysfunction to dysregulated redox signaling. Mol Aspects Med 2018; 63:59-69. [PMID: 30098327 DOI: 10.1016/j.mam.2018.08.001] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/02/2018] [Accepted: 08/07/2018] [Indexed: 12/31/2022]
Abstract
The lung is a delicate organ with a large surface area that is continuously exposed to the external environment, and is therefore highly vulnerable to exogenous sources of oxidative stress. In addition, each of its approximately 40 cell types can also generate reactive oxygen species (ROS), as byproducts of cellular metabolism and in a more regulated manner by NOX enzymes with functions in host defense, immune regulation, and cell proliferation or differentiation. To effectively regulate the biological actions of exogenous and endogenous ROS, various enzymatic and non-enzymatic antioxidant defense systems are present in all lung cell types to provide adequate protection against their injurious effects and to allow for appropriate ROS-mediated biological signaling. Acute and chronic lung diseases are commonly thought to be associated with increased oxidative stress, evidenced by altered cellular or extracellular redox status, increased irreversible oxidative modifications in proteins or DNA, mitochondrial dysfunction, and altered expression or activity of NOX enzymes and antioxidant enzyme systems. However, supplementation strategies with generic antioxidants have been minimally successful in prevention or treatment of lung disease, most likely due to their inability to distinguish between harmful and beneficial actions of ROS. Recent studies have attempted to identify specific redox-based mechanisms that may mediate chronic lung disease, such as allergic asthma or pulmonary fibrosis, which provide opportunities for selective redox-based therapeutic strategies that may be useful in treatment of these diseases.
Collapse
|
39
|
Brandt SL, Klopfenstein N, Wang S, Winfree S, McCarthy BP, Territo PR, Miller L, Serezani CH. Macrophage-derived LTB4 promotes abscess formation and clearance of Staphylococcus aureus skin infection in mice. PLoS Pathog 2018; 14:e1007244. [PMID: 30102746 PMCID: PMC6107286 DOI: 10.1371/journal.ppat.1007244] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 08/23/2018] [Accepted: 07/26/2018] [Indexed: 01/26/2023] Open
Abstract
The early events that shape the innate immune response to restrain pathogens during skin infections remain elusive. Methicillin-resistant Staphylococcus aureus (MRSA) infection engages phagocyte chemotaxis, abscess formation, and microbial clearance. Upon infection, neutrophils and monocytes find a gradient of chemoattractants that influence both phagocyte direction and microbial clearance. The bioactive lipid leukotriene B4 (LTB4) is quickly (seconds to minutes) produced by 5-lipoxygenase (5-LO) and signals through the G protein-coupled receptors LTB4R1 (BLT1) or BLT2 in phagocytes and structural cells. Although it is known that LTB4 enhances antimicrobial effector functions in vitro, whether prompt LTB4 production is required for bacterial clearance and development of an inflammatory milieu necessary for abscess formation to restrain pathogen dissemination is unknown. We found that LTB4 is produced in areas near the abscess and BLT1 deficient mice are unable to form an abscess, elicit neutrophil chemotaxis, generation of neutrophil and monocyte chemokines, as well as reactive oxygen species-dependent bacterial clearance. We also found that an ointment containing LTB4 synergizes with antibiotics to eliminate MRSA potently. Here, we uncovered a heretofore unknown role of macrophage-derived LTB4 in orchestrating the chemoattractant gradient required for abscess formation, while amplifying antimicrobial effector functions.
Collapse
Affiliation(s)
- Stephanie L. Brandt
- Indiana University School of Medicine, Department of Microbiology & Immunology, Indianapolis, Indiana, United States of America
- Vanderbilt University Medical Center, Department of Medicine, Division of Infectious Disease, Nashville, Tennessee, United States of America
| | - Nathan Klopfenstein
- Vanderbilt University Medical Center, Department of Medicine, Division of Infectious Disease, Nashville, Tennessee, United States of America
- Vanderbilt University Medical Center, Department of Pathology, Microbiology and Immunology, Nashville, Tennessee, United States of America
| | - Soujuan Wang
- Indiana University School of Medicine, Department of Microbiology & Immunology, Indianapolis, Indiana, United States of America
| | - Seth Winfree
- Indiana Center for Biological Microscopy, Indianapolis, Indiana, United States of America
| | - Brian P. McCarthy
- Indiana Institute for Biomedical Imaging Sciences, Department of Radiology, Indianapolis, Indiana, United States of America
| | - Paul R. Territo
- Indiana Institute for Biomedical Imaging Sciences, Department of Radiology, Indianapolis, Indiana, United States of America
| | - Lloyd Miller
- Johns Hopkins University School of Medicine, Department of Dermatology, Baltimore, Maryland, United States of America
| | - C. Henrique Serezani
- Indiana University School of Medicine, Department of Microbiology & Immunology, Indianapolis, Indiana, United States of America
- Vanderbilt University Medical Center, Department of Medicine, Division of Infectious Disease, Nashville, Tennessee, United States of America
- Vanderbilt University Medical Center, Department of Pathology, Microbiology and Immunology, Nashville, Tennessee, United States of America
- Vanderbilt Institute of Infection, Immunology and Inflammation, Nashville, Tennessee, United States of America
| |
Collapse
|
40
|
Abstract
The balance between reactive oxygen species and reactive nitrogen species production by the host and stress response by fungi is a key axis of the host-pathogen interaction. This review will describe emerging themes in fungal pathogenesis underpinning this axis.
Collapse
Affiliation(s)
- Adilia Warris
- Medical Research Centre for Medical Mycology, Aberdeen Fungal Group, Institute of Medical Sciences, University of Aberdeen, UK
| | - Elizabeth R Ballou
- Institute for Microbiology and Infection, School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| |
Collapse
|
41
|
Abstract
More than a century ago, infections by Salmonella were already associated with foodborne enteric diseases with high morbidity in humans and cattle. Intestinal inflammation and diarrhea are hallmarks of infections caused by nontyphoidal Salmonella serovars, and these pathologies facilitate pathogen transmission to the environment. In those early times, physicians and microbiologists also realized that typhoid and paratyphoid fever caused by some Salmonella serovars could be transmitted by "carriers," individuals outwardly healthy or at most suffering from some minor chronic complaint. In his pioneering study of the nontyphoidal serovar Typhimurium in 1967, Takeuchi published the first images of intracellular bacteria enclosed by membrane-bound vacuoles in the initial stages of the intestinal epithelium penetration. These compartments, called Salmonella-containing vacuoles, are highly dynamic phagosomes with differing biogenesis depending on the host cell type. Single-cell studies involving real-time imaging and gene expression profiling, together with new approaches based on genetic reporters sensitive to growth rate, have uncovered unprecedented heterogeneous responses in intracellular bacteria. Subpopulations of intracellular bacteria displaying fast, reduced, or no growth, as well as cytosolic and intravacuolar bacteria, have been reported in both in vitro and in vivo infection models. Recent investigations, most of them focused on the serovar Typhimurium, point to the selection of persisting bacteria inside macrophages or following an autophagy attack in fibroblasts. Here, we discuss these heterogeneous intracellular lifestyles and speculate on how these disparate behaviors may impact host-to-host transmissibility of Salmonella serovars.
Collapse
|
42
|
Aratani Y. Myeloperoxidase: Its role for host defense, inflammation, and neutrophil function. Arch Biochem Biophys 2018; 640:47-52. [PMID: 29336940 DOI: 10.1016/j.abb.2018.01.004] [Citation(s) in RCA: 540] [Impact Index Per Article: 90.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 12/14/2017] [Accepted: 01/09/2018] [Indexed: 12/22/2022]
Abstract
Myeloperoxidase (MPO) is a heme-containing peroxidase expressed mainly in neutrophils and to a lesser degree in monocytes. In the presence of hydrogen peroxide and halides, MPO catalyzes the formation of reactive oxygen intermediates, including hypochlorous acid (HOCl). The MPO/HOCl system plays an important role in microbial killing by neutrophils. In addition, MPO has been demonstrated to be a local mediator of tissue damage and the resulting inflammation in various inflammatory diseases. These findings have implicated MPO as an important therapeutic target in the treatment of inflammatory conditions. In contrast to its injurious effects at sites of inflammation, recent studies using animal models of various inflammatory diseases have demonstrated that MPO deficiency results in the exaggeration of inflammatory response, and that it affects neutrophil functions including cytokine production. Given these diverse effects, a growing interest has emerged in the role of this well-studied enzyme in health and disease.
Collapse
Affiliation(s)
- Yasuaki Aratani
- Graduate School of Nanobioscience, Yokohama City University, Seto 22-2, Kanazawa, Yokohama 236-0027, Japan.
| |
Collapse
|
43
|
Burg AR, Das S, Padgett LE, Koenig ZE, Tse HM. Superoxide Production by NADPH Oxidase Intensifies Macrophage Antiviral Responses during Diabetogenic Coxsackievirus Infection. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2018; 200:61-70. [PMID: 29158420 PMCID: PMC5736405 DOI: 10.4049/jimmunol.1700478] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 10/17/2017] [Indexed: 02/07/2023]
Abstract
Coxsackievirus B infections are suspected environmental triggers of type 1 diabetes (T1D) and macrophage antiviral responses may provide a link to virus-induced T1D. We previously demonstrated an important role for NADPH oxidase (NOX)-derived superoxide production during T1D pathogenesis, as NOX-deficient NOD mice (NOD.Ncf1m1J ) were protected against T1D due, in part, to impaired proinflammatory TLR signaling in NOD.Ncf1m1J macrophages. Therefore, we hypothesized that loss of NOX-derived superoxide would dampen diabetogenic antiviral macrophage responses and protect from virus-induced diabetes. Upon infection with a suspected diabetogenic virus, Coxsackievirus B3 (CB3), NOD.Ncf1m1J mice remained resistant to virus-induced autoimmune diabetes. A concomitant decrease in circulating inflammatory chemokines, blunted antiviral gene signature within the pancreas, and reduced proinflammatory M1 macrophage responses were observed. Importantly, exogenous superoxide addition to CB3-infected NOD.Ncf1m1J bone marrow-derived macrophages rescued the inflammatory antiviral M1 macrophage response, revealing reduction-oxidation-dependent mechanisms of signal transducer and activator of transcription 1 signaling and dsRNA viral sensors in macrophages. We report that superoxide production following CB3 infection may exacerbate pancreatic β cell destruction in T1D by influencing proinflammatory M1 macrophage responses, and mechanistically linking oxidative stress, inflammation, and diabetogenic virus infections.
Collapse
Affiliation(s)
- Ashley R Burg
- Comprehensive Diabetes Center, Department of Microbiology, University of Alabama at Birmingham School of Medicine, Birmingham, AL 35294-2182
| | - Shaonli Das
- Comprehensive Diabetes Center, Department of Microbiology, University of Alabama at Birmingham School of Medicine, Birmingham, AL 35294-2182
| | - Lindsey E Padgett
- Comprehensive Diabetes Center, Department of Microbiology, University of Alabama at Birmingham School of Medicine, Birmingham, AL 35294-2182
| | - Zachary E Koenig
- Comprehensive Diabetes Center, Department of Microbiology, University of Alabama at Birmingham School of Medicine, Birmingham, AL 35294-2182
| | - Hubert M Tse
- Comprehensive Diabetes Center, Department of Microbiology, University of Alabama at Birmingham School of Medicine, Birmingham, AL 35294-2182
| |
Collapse
|
44
|
Sakai Y, Yamamori T, Yoshikawa Y, Bo T, Suzuki M, Yamamoto K, Ago T, Inanami O. NADPH oxidase 4 mediates ROS production in radiation-induced senescent cells and promotes migration of inflammatory cells. Free Radic Res 2017; 52:92-102. [PMID: 29228832 DOI: 10.1080/10715762.2017.1416112] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Excessive DNA damage induced by ionising radiation (IR) to normal tissue cells is known to trigger cellular senescence, a process termed stress-induced premature senescence (SIPS). SIPS is often accompanied by the production of reactive oxygen species (ROS), and this is reported to be important for the initiation and maintenance of SIPS. However, the source of ROS during SIPS after IR and their significance in radiation-induced normal tissue damage remain elusive. In the present study, we tested the hypothesis that the NADPH oxidase (NOX) family of proteins mediates ROS production in SIPS-induced cells after IR and plays a role in SIPS-associated biological events. X-irradiation of primary mouse embryonic fibroblasts (MEFs) resulted in cellular senescence and the concomitant increase of intracellular ROS. Among all six murine NOX isoforms (NOX1-4 and DUOX1/2), only NOX4 was detectable under basal conditions and was upregulated following IR. In addition, radiation-induced ROS production was diminished by genetic or pharmacological inhibition of NOX4. Meanwhile, NOX4 deficiency did not affect the induction of cellular senescence after IR. Furthermore, the migration of human monocytic U937 cells to the culture medium collected from irradiated MEFs was significantly reduced by NOX4 inhibition, suggesting that NOX4 promotes the recruitment of inflammatory cells. Collectively, our findings imply that NOX4 mediates ROS production in radiation-induced senescent cells and contributes to normal tissue damage after IR via the recruitment of inflammatory cells and the exacerbation of tissue inflammation.
Collapse
Affiliation(s)
- Yuri Sakai
- a Laboratory of Radiation Biology, Department of Applied Veterinary Sciences, Faculty of Veterinary Medicine , Hokkaido University , Sapporo , Japan
| | - Tohru Yamamori
- a Laboratory of Radiation Biology, Department of Applied Veterinary Sciences, Faculty of Veterinary Medicine , Hokkaido University , Sapporo , Japan
| | - Yoji Yoshikawa
- b Department of Medicine and Clinical Science, Graduate School of Medical Sciences , Kyushu University , Fukuoka , Japan
| | - Tomoki Bo
- a Laboratory of Radiation Biology, Department of Applied Veterinary Sciences, Faculty of Veterinary Medicine , Hokkaido University , Sapporo , Japan
| | - Motofumi Suzuki
- c Radiation and Cancer Biology Team , National Institutes for Quantum and Radiobiological Science and Technology , Chiba , Japan
| | - Kumiko Yamamoto
- a Laboratory of Radiation Biology, Department of Applied Veterinary Sciences, Faculty of Veterinary Medicine , Hokkaido University , Sapporo , Japan
| | - Tetsuro Ago
- b Department of Medicine and Clinical Science, Graduate School of Medical Sciences , Kyushu University , Fukuoka , Japan
| | - Osamu Inanami
- a Laboratory of Radiation Biology, Department of Applied Veterinary Sciences, Faculty of Veterinary Medicine , Hokkaido University , Sapporo , Japan
| |
Collapse
|
45
|
NADPH Oxidase Deficiency: A Multisystem Approach. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:4590127. [PMID: 29430280 PMCID: PMC5753020 DOI: 10.1155/2017/4590127] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/11/2017] [Accepted: 11/02/2017] [Indexed: 02/07/2023]
Abstract
The immune system is a complex system able to recognize a wide variety of host agents, through different biological processes. For example, controlled changes in the redox state are able to start different pathways in immune cells and are involved in the killing of microbes. The generation and release of ROS in the form of an “oxidative burst” represent the pivotal mechanism by which phagocytic cells are able to destroy pathogens. On the other hand, impaired oxidative balance is also implicated in the pathogenesis of inflammatory complications, which may affect the function of many body systems. NADPH oxidase (NOX) plays a pivotal role in the production of ROS, and the defect of its different subunits leads to the development of chronic granulomatous disease (CGD). The defect of the different NOX subunits in CGD affects different organs. In this context, this review will be focused on the description of the effect of NOX2 deficiency in different body systems. Moreover, we will also focus our attention on the novel insight in the pathogenesis of immunodeficiency and inflammation-related manifestations and on the protective role of NOX2 deficiency against the development of atherosclerosis.
Collapse
|
46
|
Lv J, He X, Wang H, Wang Z, Kelly GT, Wang X, Chen Y, Wang T, Qian Z. TLR4-NOX2 axis regulates the phagocytosis and killing of Mycobacterium tuberculosis by macrophages. BMC Pulm Med 2017; 17:194. [PMID: 29233104 PMCID: PMC5727946 DOI: 10.1186/s12890-017-0517-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 11/21/2017] [Indexed: 11/23/2022] Open
Abstract
Background Macrophages stand at the forefront of both innate and adapted immunity through their capacities to recognize, engulf, and eliminate foreign particles, and to stimulate adapted immune cells. They are also involved in controlling pro- and anti-inflammatory pathways. Macrophage activity against Mycobacterium tuberculosis (M. tuberculosis) has been shown to involve Toll-like receptor (TLR) activation and ROS production. Previous studies have shown that lipopolysaccharide (LPS), through TLR4, could activate macrophages, improve their bactericidal ROS production, and facilitate anti-infective immune responses. We sought to better understand the role of the TLR4-NOX2 axis in macrophage activation during M. tuberculosis infection. Methods THP-1 macrophages and PMA primed THP-1 macrophages [THP-1(A)] were treated with LPS and infected by M. tuberculosis. Cells were analyzed by flow cytometry for TLR4 expression, ROS production, phagocytosis, and killing of M. tuberculosis. Western blotting was used to analyze NOX2 expression. Inhibitors of the TLR4-NOX2 pathway were used to assess this pathway’s role in these processes, and their role in LPS activation of macrophages. Results We found that THP1-derived macrophages or PMA primed THP-1 macrophages exhibit higher surface TLR4 levels and increased NOX2 expression levels following LPS treatment. M. tuberculosis infection reduced these levels, but LPS was able to limit the negative effects of M.tb. Additionally, LPS increases THP-1(A) cells’ bactericidal activities including phagocytosis, ROS production, and destruction of M. tuberculosis. Significantly, all of these activities are impaired when TLR4 or NOX2 are inhibited. Conclusion These studies demonstrate the importance of the TLR4-NOX2 axis in M. tuberculosis elimination by macrophages and may lead to novel therapies for tuberculosis and other bacterial infections. Electronic supplementary material The online version of this article (10.1186/s12890-017-0517-0) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Jingzhu Lv
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Bengbu, Anhui, 233003, China
| | - Xiaoyan He
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Bengbu, Anhui, 233003, China
| | - Hongtao Wang
- Key Laboratory of Anhui Province for Infection and Immunology, Bengbu Medical College, 2600 Donghai Ave, Bengbu, Anhui, 233003, China
| | - Zhaohua Wang
- Department of Pulmonary Medicine, Bengbu Infectious Disease Hospital, Bengbu, Anhui, 233003, China
| | - Gabriel T Kelly
- Department of Medicine, The University of Arizona, 1656 E. Mabel St, P.O. Box 245218, Tucson, AZ, 85724, USA
| | - Xiaojing Wang
- Anhui Clinical and Preclinical Key Laboratory of Respiratory Disease, Department of Respiration, First Affiliated Hospital; Bengbu Medical College, Bengbu, Anhui, 233000, China
| | - Yin Chen
- Department of Pharmacology and Toxicology, The University of Arizona, Tucson, AZ, 85724, USA
| | - Ting Wang
- Department of Medicine, The University of Arizona, 1656 E. Mabel St, P.O. Box 245218, Tucson, AZ, 85724, USA.
| | - Zhongqing Qian
- Key Laboratory of Anhui Province for Infection and Immunology, Bengbu Medical College, 2600 Donghai Ave, Bengbu, Anhui, 233003, China.
| |
Collapse
|
47
|
Mahmoud AM. Exercise Amaliorates Metabolic Disturbances and Oxidative Stress in Diabetic Cardiomyopathy: Possible Underlying Mechanisms. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 999:207-230. [DOI: 10.1007/978-981-10-4307-9_12] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
48
|
Köster S, Upadhyay S, Chandra P, Papavinasasundaram K, Yang G, Hassan A, Grigsby SJ, Mittal E, Park HS, Jones V, Hsu FF, Jackson M, Sassetti CM, Philips JA. Mycobacterium tuberculosis is protected from NADPH oxidase and LC3-associated phagocytosis by the LCP protein CpsA. Proc Natl Acad Sci U S A 2017; 114:E8711-E8720. [PMID: 28973896 PMCID: PMC5642705 DOI: 10.1073/pnas.1707792114] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Mycobacterium tuberculosis' success as a pathogen comes from its ability to evade degradation by macrophages. Normally macrophages clear microorganisms that activate pathogen-recognition receptors (PRRs) through a lysosomal-trafficking pathway called "LC3-associated phagocytosis" (LAP). Although Mtuberculosis activates numerous PRRs, for reasons that are poorly understood LAP does not substantially contribute to Mtuberculosis control. LAP depends upon reactive oxygen species (ROS) generated by NADPH oxidase, but Mtuberculosis fails to generate a robust oxidative response. Here, we show that CpsA, a LytR-CpsA-Psr (LCP) domain-containing protein, is required for Mtuberculosis to evade killing by NADPH oxidase and LAP. Unlike phagosomes containing wild-type bacilli, phagosomes containing the ΔcpsA mutant recruited NADPH oxidase, produced ROS, associated with LC3, and matured into antibacterial lysosomes. Moreover, CpsA was sufficient to impair NADPH oxidase recruitment to fungal particles that are normally cleared by LAP. Intracellular survival of the ΔcpsA mutant was largely restored in macrophages missing LAP components (Nox2, Rubicon, Beclin, Atg5, Atg7, or Atg16L1) but not in macrophages defective in a related, canonical autophagy pathway (Atg14, Ulk1, or cGAS). The ΔcpsA mutant was highly impaired in vivo, and its growth was partially restored in mice deficient in NADPH oxidase, Atg5, or Atg7, demonstrating that CpsA makes a significant contribution to the resistance of Mtuberculosis to NADPH oxidase and LC3 trafficking in vivo. Overall, our findings reveal an essential role of CpsA in innate immune evasion and suggest that LCP proteins have functions beyond their previously known role in cell-wall metabolism.
Collapse
Affiliation(s)
- Stefan Köster
- Division of Infectious Diseases, Department of Medicine, New York University School of Medicine, New York, NY 10016
| | - Sandeep Upadhyay
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Pallavi Chandra
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Kadamba Papavinasasundaram
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01655
| | - Guozhe Yang
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Amir Hassan
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Steven J Grigsby
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Ekansh Mittal
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Heidi S Park
- Division of Infectious Diseases, Department of Medicine, New York University School of Medicine, New York, NY 10016
| | - Victoria Jones
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523
| | - Fong-Fu Hsu
- Mass Spectrometry Resource, Division of Endocrinology, Diabetes, Metabolism, and Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
| | - Mary Jackson
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523
| | - Christopher M Sassetti
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01655
| | - Jennifer A Philips
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110;
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110
| |
Collapse
|
49
|
Detection of a microbial metabolite by STING regulates inflammasome activation in response to Chlamydia trachomatis infection. PLoS Pathog 2017; 13:e1006383. [PMID: 28570638 PMCID: PMC5453623 DOI: 10.1371/journal.ppat.1006383] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 04/26/2017] [Indexed: 01/25/2023] Open
Abstract
The innate immune system is a critical component of host defence against microbial pathogens, but effective responses require an ability to distinguish between infectious and non-infectious insult to prevent inappropriate inflammation. Using the important obligate intracellular human pathogen Chlamydia trachomatis; an organism that causes significant immunopathology, we sought to determine critical host and pathogen factors that contribute to the induction of inflammasome activation. We assayed inflammasome activation by immunoblotting and ELISA to detect IL-1β processing and LDH release to determine pyroptosis. Using primary murine bone marrow derived macrophages or human monocyte derived dendritic cells, infected with live or attenuated Chlamydia trachomatis we report that the live organism activates both canonical and non-canonical inflammasomes, but only canonical inflammasomes controlled IL-1β processing which preceded pyroptosis. NADPH oxidase deficient macrophages were permissive to Chlamydia trachomatis replication and displayed elevated type-1 interferon and inflammasome activation. Conversely, attenuated, non-replicating Chlamydia trachomatis, primed but did not activate inflammasomes and stimulated reduced type-1 interferon responses. This suggested bacterial replication or metabolism as important factors that determine interferon responses and inflammasome activation. We identified STING but not cGAS as a central mediator of interferon regulated inflammasome activation. Interestingly, exogenous delivery of a Chlamydia trachomatis metabolite and STING ligand—cyclic di-AMP, recovered inflammasome activation to attenuated bacteria in a STING dependent manner thus indicating that a bacterial metabolite is a key factor initiating inflammasome activation through STING, independent of cGAS. These data suggest a potential mechanism of how the innate immune system can distinguish between infectious and non-infectious insult and instigate appropriate immune responses that could be therapeutically targeted. Innate responses to bacterial infection such as Chlamydia trachomatis activate inflammasomes to enable the processing of IL-1β, IL-18 and the induction of an inflammatory form of cell death termed pyroptosis. Inflammasomes are crucial to host defence but require tight regulation in order to prevent inappropriate inflammation and immunopathology. Here, we demonstrate that the pro-inflammatory potential of an attenuated strain of Chlamydia trachomatis, that fails to activate the inflammasome, can be rescued by the addition of a bacterial metabolite. The requirement for this metabolite, highlights a novel mechanism of inflammasome regulation and reveals a crucial role for STING mediated interferon signalling independent of cGAS. These findings further our understanding of how the innate immune system can differentiate between potential infectious and non-infectious threats and mount appropriate immune responses.
Collapse
|
50
|
Statins in anthracycline-induced cardiotoxicity: Rac and Rho, and the heartbreakers. Cell Death Dis 2017; 8:e2564. [PMID: 28102848 PMCID: PMC5386353 DOI: 10.1038/cddis.2016.418] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 11/02/2016] [Indexed: 01/06/2023]
Abstract
Cancer patients receiving anthracycline-based chemotherapy are at risk to develop life-threatening chronic cardiotoxicity with the pathophysiological mechanism of action not fully understood. Besides the most common hypothesis that anthracycline-induced congestive heart failure (CHF) is mainly caused by generation of reactive oxygen species, recent data point to a critical role of topoisomerase II beta (TOP2B), which is a primary target of anthracycline poisoning, in the pathophysiology of CHF. As the use of the only clinically approved cardioprotectant dexrazoxane has been limited by the FDA in 2011, there is an urgent need for alternative cardioprotective measures. Statins are anti-inflammatory and anti-oxidative drugs that are clinically well established for the prevention of cardiovascular diseases. They exhibit pleiotropic beneficial properties beyond cholesterol-lowering effects that most likely rest on the indirect inhibition of small Ras homologous (Rho) GTPases. The Rho GTPase Rac1 has been shown to be a major factor in the regulation of the pro-oxidative NADPH oxidase as well as in the regulation of type II topoisomerase. Both are discussed to play an important role in the pathophysiology of anthracycline-induced CHF. Therefore, off-label use of statins or novel Rac1 inhibitors might represent a promising pharmacological approach to gain control over chronic cardiotoxicity by interfering with key mechanisms of anthracycline-induced cardiomyocyte cell death.
Collapse
|