1
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Xiao S, Zhou Y, Wang Q, Yang D. Ketamine Attenuates Airway Inflammation via Inducing Inflammatory Cells Apoptosis and Activating Nrf2 Pathway in a Mixed-Granulocytic Murine Asthma Model. Drug Des Devel Ther 2022; 16:4411-4428. [PMID: 36597444 PMCID: PMC9805722 DOI: 10.2147/dddt.s391010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 12/15/2022] [Indexed: 12/29/2022] Open
Abstract
Purpose The use of ketamine, an anesthetic, as a treatment for asthma has been investigated in numerous studies. However, how ketamine affects asthma is unclear. The present study examined the effects of ketamine on a murine model of mixed-granulocytic asthma, and the role of the nuclear factor erythroid 2-related factor 2 (Nrf2) pathway. Methods The murine model of mixed-granulocytic asthma was established using ovalbumin (OVA) for sensitization and the combination of OVA and lipopolysaccharides (LPS) for challenge. The main characteristics of asthma, oxidative stress biomarkers, and the expression of the Nrf2 pathway were examined. ML385 was administered to verify the role of the Nrf2 pathway. Results Mice in the OVA +LPS group developed asthmatic characteristics, including airway hyperresponsiveness, mixed-granulocytic airway inflammation, mucus overproduction, as well as increased levels of oxidative stress and impaired apoptosis of inflammatory cells. Among the three concentrations, ketamine at 75mg/kg effectively attenuated these asthmatic symptoms, activated the Nrf2 pathway, decreased oxidative stress, and induced apoptosis of eosinophils and neutrophils in bronchoalveolar lavage fluid (BALF) with a reducing level of myeloid cell leukemia 1(Mcl-1). ML385 (an Nrf2 inhibitor) eliminated the protective effects of ketamine on the mixed-granulocytic asthma model. Conclusion The study concluded that ketamine reduced oxidative stress and attenuated asthmatic symptoms (neutrophilic airway inflammation) by activating the Nrf2-Keap1 pathway, with 75 mg/kg ketamine showing the best results. Ketamine administration also increased neutrophil and eosinophil apoptosis in BALF, which may contribute to the resolution of inflammation. The use of ketamine as a treatment for asthma may therefore be beneficial.
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Affiliation(s)
- Shilin Xiao
- Department of Anesthesiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Ying Zhou
- Department of Anesthesiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Qianyu Wang
- Department of Anesthesiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Dong Yang
- Department of Anesthesiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China,Correspondence: Dong Yang, Department of Anesthesiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33 Badachu Road, Shijingshan, Beijing, 100144, People’s Republic of China, Tel +86-13661267522, Email
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2
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Cao Z, Zhao M, Sun H, Hu L, Chen Y, Fan Z. Roles of mitochondria in neutrophils. Front Immunol 2022; 13:934444. [PMID: 36081497 PMCID: PMC9447286 DOI: 10.3389/fimmu.2022.934444] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 07/19/2022] [Indexed: 01/25/2023] Open
Abstract
Neutrophils are the most abundant leukocyte in human blood. They are critical for fighting infections and are involved in inflammatory diseases. Mitochondria are indispensable for eukaryotic cells, as they control the biochemical processes of respiration and energy production. Mitochondria in neutrophils have been underestimated since glycolysis is a major metabolic pathway for fuel production in neutrophils. However, several studies have shown that mitochondria are greatly involved in multiple neutrophil functions as well as neutrophil-related diseases. In this review, we focus on how mitochondrial components, metabolism, and related genes regulate neutrophil functions and relevant diseases.
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Affiliation(s)
- Ziming Cao
- Department of Immunology, School of Medicine, UConn Health, Farmington, CT, United States
| | - Meng Zhao
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States,Department of Microbiology and Immunology, University of Oklahoma Health Science Center, Oklahoma City, OK, United States
| | - Hao Sun
- Department of Medicine, University of California San Diego, La Jolla, CA, United States
| | - Liang Hu
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yunfeng Chen
- Department of Biochemistry and Molecular Biology and Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Zhichao Fan
- Department of Immunology, School of Medicine, UConn Health, Farmington, CT, United States,*Correspondence: Zhichao Fan,
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3
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Ehrnthaller C, Braumüller S, Kellermann S, Gebhard F, Perl M, Huber-Lang M. Complement Factor C5a Inhibits Apoptosis of Neutrophils-A Mechanism in Polytrauma? J Clin Med 2021; 10:jcm10143157. [PMID: 34300323 PMCID: PMC8303460 DOI: 10.3390/jcm10143157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/02/2021] [Accepted: 07/15/2021] [Indexed: 01/03/2023] Open
Abstract
Life-threatening polytrauma results in early activation of the complement and apoptotic system, as well as leukocytes, ultimately leading to the clearance of damaged cells. However, little is known about interactions between the complement and apoptotic systems in PMN (polymorphonuclear neutrophils) after multiple injuries. PMN from polytrauma patients and healthy volunteers were obtained and assessed for apoptotic events along the post-traumatic time course. In vitro studies simulated complement activation by the exposure of PMN to C3a or C5a and addressed both the intrinsic and extrinsic apoptotic pathway. Specific blockade of the C5a-receptor 1 (C5aR1) on PMN was evaluated for efficacy to reverse complement-driven alterations. PMN from polytrauma patients exhibited significantly reduced apoptotic rates up to 10 days post trauma compared to healthy controls. Polytrauma-induced resistance was associated with significantly reduced Fas-ligand (FasL) and Fas-receptor (FasR) on PMN and in contrast, significantly enhanced FasL and FasR in serum. Simulation of systemic complement activation revealed for C5a, but not for C3a, a dose-dependent abrogation of PMN apoptosis in both intrinsic and extrinsic pathways. Furthermore, specific blockade of the C5aR1 reversed C5a-induced PMN resistance to apoptosis. The data suggest an important regulatory and putative mechanistic and therapeutic role of the C5a/C5aR1 interaction on PMN apoptosis after polytrauma.
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Affiliation(s)
- Christian Ehrnthaller
- Institute of Clinical and Experimental Trauma-Immunology (ITI), University of Ulm, 89081 Ulm, Germany; (S.B.); (S.K.)
- Department of Orthopedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, 81377 Munich, Germany
- Correspondence: (C.E.); (M.H.-L.)
| | - Sonja Braumüller
- Institute of Clinical and Experimental Trauma-Immunology (ITI), University of Ulm, 89081 Ulm, Germany; (S.B.); (S.K.)
| | - Stephanie Kellermann
- Institute of Clinical and Experimental Trauma-Immunology (ITI), University of Ulm, 89081 Ulm, Germany; (S.B.); (S.K.)
| | - Florian Gebhard
- Department of Traumatology, Hand-, Plastic-, and Reconstructive Surgery, Center of Surgery, University of Ulm, 89081 Ulm, Germany; (F.G.); (M.P.)
| | - Mario Perl
- Department of Traumatology, Hand-, Plastic-, and Reconstructive Surgery, Center of Surgery, University of Ulm, 89081 Ulm, Germany; (F.G.); (M.P.)
- Department of Traumatology and Orthopaedic Surgery, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma-Immunology (ITI), University of Ulm, 89081 Ulm, Germany; (S.B.); (S.K.)
- Correspondence: (C.E.); (M.H.-L.)
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4
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Wang X, Cai J, Lin B, Ma M, Tao Y, Zhou Y, Bai L, Jiang W, Zhou R. GPR34-mediated sensing of lysophosphatidylserine released by apoptotic neutrophils activates type 3 innate lymphoid cells to mediate tissue repair. Immunity 2021; 54:1123-1136.e8. [PMID: 34107271 DOI: 10.1016/j.immuni.2021.05.007] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/25/2021] [Accepted: 05/05/2021] [Indexed: 02/06/2023]
Abstract
Neutrophils migrate rapidly to damaged tissue and play critical roles in host defense and tissue homeostasis. Here we investigated the mechanisms whereby neutrophils participate in tissue repair. In an intestinal epithelia injury model, neutrophil depletion exacerbated colitis and associated with reduced interleukin (IL)-22 and limited activation of type 3 innate lymphoid cells (ILC3s). Co-culture with neutrophils activated ILC3s in a manner dependent on neutrophil apoptosis. Metabolomic analyses revealed that lysophosphatidylserine (LysoPS) from apoptotic neutrophils directly stimulated ILC3 activation. ILC3-specific deletion of Gpr34, encoding the LysoPS receptor GPR34, or inhibition of downstream PI3K-AKT or ERK suppressed IL-22 production in response to apoptotic neutrophils. Gpr34-/- mice exhibited compromised ILC3 activation and tissue repair during colon injury, and neutrophil depletion abrogated these defects. GPR34 deficiency in ILC3s limited IL-22 production and tissue repair in vivo in settings of colon and skin injury. Thus, GPR34 is an ILC3-expressed damage-sensing receptor that triggers tissue repair upon recognition of dying neutrophils.
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Affiliation(s)
- Xiaqiong Wang
- Department of Geriatrics, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, China; Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Juan Cai
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Bolong Lin
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Ming Ma
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Ye Tao
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Yubo Zhou
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Li Bai
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Wei Jiang
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China.
| | - Rongbin Zhou
- Department of Geriatrics, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, China; Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China; CAS Centre for Excellence in Cell and Molecular Biology, University of Science and Technology of China, Hefei 230027, China.
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5
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Glennon-Alty L, Moots RJ, Edwards SW, Wright HL. Type I interferon regulates cytokine-delayed neutrophil apoptosis, reactive oxygen species production and chemokine expression. Clin Exp Immunol 2020; 203:151-159. [PMID: 32990354 PMCID: PMC7806414 DOI: 10.1111/cei.13525] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/21/2020] [Accepted: 09/14/2020] [Indexed: 02/06/2023] Open
Abstract
Interferons (IFNs) are key regulators of a number of inflammatory conditions in which neutrophils play an important role in pathology, such as rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE), where type I IFNs are implicated in disease pathology. However, IFNs are usually generated in vivo together with other cytokines that also have immunoregulatory functions, but such interactions are poorly defined experimentally. We measured the effects of type I (IFN-α) IFN, elevated in both RA and SLE, on the functions of healthy neutrophils incubated in vitro in the absence and presence of proinflammatory cytokines typically elevated in inflammatory diseases [tumour necrosis factor (TNF-α), granulocyte-macrophage colony-stimulating factor (GM-CSF)]. IFN-α alone had no effect on neutrophil apoptosis; however, it abrogated the anti-apoptotic effect of GM-CSF (18 h, P < 0·01). The enhanced stability of the anti-apoptotic protein myeloid cell leukaemia 1 (Mcl-1) and delayed activation of caspase activation normally regulated by GM-CSF were blocked by IFN-α: this effect was mediated, in part, by activation of p38 mitogen-activated protein kinase (MAPK). IFN-α alone also primed reactive oxygen species (ROS) production and maintained the transient priming effect of TNF-α for up to 4 h: it also down-regulated GM-CSF- and TNF-α-activated expression of chemokine (C-X-C motif) ligand (CXCL)1, CXCL2, CXCL3, CXCL8, CCL3 and CCL4 but, in contrast, increased the expression of CXCL10. These novel data identify complex regulatory signalling networks in which type I IFNs profoundly alter the response of neutrophils to inflammatory cytokines. This is likely to have important consequences in vivo and may explain the complexity and heterogeneity of inflammatory diseases such as RA, in which multiple cytokine cascades have been activated.
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Affiliation(s)
- L Glennon-Alty
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, Merseyside, UK.,Liverpool Health Partners, University of Liverpool, Liverpool, Merseyside, UK
| | - R J Moots
- Department of Rheumatology, Aintree University Hospital, Liverpool, UK
| | - S W Edwards
- Institute of Infection, Veterinary and Ecological Science, University of Liverpool, Liverpool, Merseyside, UK
| | - H L Wright
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, Merseyside, UK
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6
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Németh T, Sperandio M, Mócsai A. Neutrophils as emerging therapeutic targets. Nat Rev Drug Discov 2020; 19:253-275. [DOI: 10.1038/s41573-019-0054-z] [Citation(s) in RCA: 243] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2019] [Indexed: 12/13/2022]
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7
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Rahman A, Henry KM, Herman KD, Thompson AA, Isles HM, Tulotta C, Sammut D, Rougeot JJ, Khoshaein N, Reese AE, Higgins K, Tabor C, Sabroe I, Zuercher WJ, Savage CO, Meijer AH, Whyte MK, Dockrell DH, Renshaw SA, Prince LR. Inhibition of ErbB kinase signalling promotes resolution of neutrophilic inflammation. eLife 2019; 8:50990. [PMID: 31613219 PMCID: PMC6839918 DOI: 10.7554/elife.50990] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/15/2019] [Indexed: 02/06/2023] Open
Abstract
Neutrophilic inflammation with prolonged neutrophil survival is common to many inflammatory conditions, including chronic obstructive pulmonary disease (COPD). There are few specific therapies that reverse neutrophilic inflammation, but uncovering mechanisms regulating neutrophil survival is likely to identify novel therapeutic targets. Screening of 367 kinase inhibitors in human neutrophils and a zebrafish tail fin injury model identified ErbBs as common targets of compounds that accelerated inflammation resolution. The ErbB inhibitors gefitinib, CP-724714, erbstatin and tyrphostin AG825 significantly accelerated apoptosis of human neutrophils, including neutrophils from people with COPD. Neutrophil apoptosis was also increased in Tyrphostin AG825 treated-zebrafish in vivo. Tyrphostin AG825 decreased peritoneal inflammation in zymosan-treated mice, and increased lung neutrophil apoptosis and macrophage efferocytosis in a murine acute lung injury model. Tyrphostin AG825 and knockdown of egfra and erbb2 by CRISPR/Cas9 reduced inflammation in zebrafish. Our work shows that inhibitors of ErbB kinases have therapeutic potential in neutrophilic inflammatory disease. Chronic obstructive pulmonary disease (or COPD) is a serious condition that causes the lungs to become inflamed for long periods of time, leading to permanent damage of the airways. Immune cells known as neutrophils promote inflammation after an injury, or during an infection, to aid the healing process. However, if they are active for too long, they may also cause tissue damage and drive inflammatory diseases including COPD. To limit damage to the body, neutrophils usually have a very short lifespan and die by a regulated process known as apoptosis. Finding ways to stimulate apoptosis in neutrophils may be key to developing better treatments for inflammatory diseases. Cells contain many enzymes known as kinases that control apoptosis and other cell processes. Drugs that inhibit specific kinases are effective treatments for some types of cancer and other conditions, and new kinase-inhibiting drugs are currently being developed. However, it remains unclear which kinases regulate apoptosis in neutrophils or which kinase-inhibiting drugs may have the potential to treat COPD and other inflammatory diseases. To address these questions, Rahman et al. tested over 350 kinase-inhibiting drugs to identify ones that promote apoptosis in neutrophils. The experiments showed that human neutrophils treated with drugs that inhibit the ErbB family of kinases died by apoptosis more quickly than untreated neutrophils. Next, Rahman et al. used zebrafish with injured tail fins as models to study inflammation. Zebrafish treated with one of these drugs – known as Tyrphostin AG825 – had lower levels of inflammation and their neutrophils underwent apoptosis more frequently than untreated zebrafish. Since drugs can have off-target effects, Rahman et al. went on to show using gene-editing technology that reducing the activity of two genes that encode ErbB kinases in zebrafish also decreased the levels of inflammation in the fish. Further experiments used mice that develop inflammation in the lungs similar to COPD in humans. As expected, neutrophils in the lungs of mice treated with Tyrphostin AG825 underwent apoptosis more frequently than those in untreated mice. These dead neutrophils were effectively cleared by other immune cells called macrophages, which also helps limit damage caused by neutrophils. Together, these findings show that Tyrphostin AG825 and other drugs that inhibit ErbB kinases help to reduce inflammation by promoting the death of neutrophils. Since several of these drugs are already used to treat human cancers, it may be possible in the future to repurpose them for use in people with COPD and other long-term inflammatory diseases. Determining whether this is possible is an aim for future studies.
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Affiliation(s)
- Atiqur Rahman
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom.,Department of Biochemistry and Molecular Biology, Faculty of Biological Sciences, University of Dhaka, Dhaka, Bangladesh
| | - Katherine M Henry
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom.,The Bateson Centre, University of Sheffield, Sheffield, United Kingdom
| | - Kimberly D Herman
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom.,The Bateson Centre, University of Sheffield, Sheffield, United Kingdom
| | - Alfred Ar Thompson
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Hannah M Isles
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom.,The Bateson Centre, University of Sheffield, Sheffield, United Kingdom
| | - Claudia Tulotta
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom.,The Bateson Centre, University of Sheffield, Sheffield, United Kingdom
| | - David Sammut
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | | | - Nika Khoshaein
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Abigail E Reese
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Kathryn Higgins
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Caroline Tabor
- The Bateson Centre, University of Sheffield, Sheffield, United Kingdom
| | - Ian Sabroe
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - William J Zuercher
- SGC-UNC, Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, United States
| | - Caroline O Savage
- Immuno-Inflammation Therapy Area Unit, GlaxoSmithKline Research and Development Ltd, Stevenage, United Kingdom
| | | | - Moira Kb Whyte
- MRC Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - David H Dockrell
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom.,MRC Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Stephen A Renshaw
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom.,The Bateson Centre, University of Sheffield, Sheffield, United Kingdom
| | - Lynne R Prince
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
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8
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Wang L, Mehta S, Ahmed Y, Wallace S, Pape MC, Gill SE. Differential Mechanisms of Septic Human Pulmonary Microvascular Endothelial Cell Barrier Dysfunction Depending on the Presence of Neutrophils. Front Immunol 2018; 9:1743. [PMID: 30116240 PMCID: PMC6082932 DOI: 10.3389/fimmu.2018.01743] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 07/16/2018] [Indexed: 01/06/2023] Open
Abstract
Sepsis is characterized by injury of pulmonary microvascular endothelial cells (PMVEC) leading to barrier dysfunction. Multiple mechanisms promote septic PMVEC barrier dysfunction, including interaction with circulating leukocytes and PMVEC apoptotic death. Our previous work demonstrated a strong correlation between septic neutrophil (PMN)-dependent PMVEC apoptosis and pulmonary microvascular albumin leak in septic mice in vivo; however, this remains uncertain in human PMVEC. Thus, we hypothesize that human PMVEC apoptosis is required for loss of PMVEC barrier function under septic conditions in vitro. To assess this hypothesis, human PMVECs cultured alone or in coculture with PMN were stimulated with PBS or cytomix (equimolar interferon γ, tumor necrosis factor α, and interleukin 1β) in the absence or presence of a pan-caspase inhibitor, Q-VD, or specific caspase inhibitors. PMVEC barrier function was assessed by transendothelial electrical resistance (TEER), as well as fluoroisothiocyanate-labeled dextran and Evans blue-labeled albumin flux across PMVEC monolayers. PMVEC apoptosis was identified by (1) loss of cell membrane polarity (Annexin V), (2) caspase activation (FLICA), and (3) DNA fragmentation [terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL)]. Septic stimulation of human PMVECs cultured alone resulted in loss of barrier function (decreased TEER and increased macromolecular flux) associated with increased apoptosis (increased Annexin V, FLICA, and TUNEL staining). In addition, treatment of septic PMVEC cultured alone with Q-VD decreased PMVEC apoptosis and prevented septic PMVEC barrier dysfunction. In septic PMN-PMVEC cocultures, there was greater trans-PMVEC macromolecular flux (both dextran and albumin) vs. PMVEC cultured alone. PMN presence also augmented septic PMVEC caspase activation (FLICA staining) vs. PMVEC cultured alone but did not affect septic PMVEC apoptosis. Importantly, pan-caspase inhibition (Q-VD treatment) completely attenuated septic PMN-dependent PMVEC barrier dysfunction. Moreover, inhibition of caspase 3, 8, or 9 in PMN-PMVEC cocultures also reduced septic PMVEC barrier dysfunction whereas inhibition of caspase 1 had no effect. Our data demonstrate that human PMVEC barrier dysfunction under septic conditions in vitro (cytomix stimulation) is clearly caspase-dependent, but the mechanism differs depending on the presence of PMN. In isolated PMVEC, apoptosis contributes to septic barrier dysfunction, whereas PMN presence enhances caspase-dependent septic PMVEC barrier dysfunction independently of PMVEC apoptosis.
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Affiliation(s)
- Lefeng Wang
- Centre for Critical Illness Research, Lawson Health Research Institute, London, ON, Canada.,Department of Medicine, Western University, London, ON, Canada
| | - Sanjay Mehta
- Centre for Critical Illness Research, Lawson Health Research Institute, London, ON, Canada.,Department of Medicine, Western University, London, ON, Canada.,Division of Respirology, Western University, London, ON, Canada
| | - Yousuf Ahmed
- Centre for Critical Illness Research, Lawson Health Research Institute, London, ON, Canada.,Department of Medicine, Western University, London, ON, Canada
| | - Shelby Wallace
- Department of Physiology and Pharmacology, Western University, London, ON, Canada
| | - M Cynthia Pape
- Centre for Critical Illness Research, Lawson Health Research Institute, London, ON, Canada.,Department of Medicine, Western University, London, ON, Canada
| | - Sean E Gill
- Centre for Critical Illness Research, Lawson Health Research Institute, London, ON, Canada.,Department of Medicine, Western University, London, ON, Canada.,Division of Respirology, Western University, London, ON, Canada.,Department of Physiology and Pharmacology, Western University, London, ON, Canada
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9
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Two-in-one: UV radiation simultaneously induces apoptosis and NETosis. Cell Death Discov 2018; 4:51. [PMID: 29736268 PMCID: PMC5919968 DOI: 10.1038/s41420-018-0048-3] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 03/03/2018] [Accepted: 03/08/2018] [Indexed: 01/10/2023] Open
Abstract
NETosis is a unique form of neutrophil death that differs from apoptosis and necrosis. However, whether NETosis and apoptosis can occur simultaneously in the same neutrophil is unknown. In this paper, we show that increasing doses of ultraviolet (UV) irradiation increases NETosis, which is confirmed by myeloperoxidase colocalisation to neutrophil extracellular DNA. Increasing UV irradiation increases caspase 3 activation, mitochondrial reactive oxygen species (ROS) generation and p38, but not ERK, phosphorylation. Inhibition of mitochondrial ROS production and p38 activation, but not NADPH oxidase (NOX) activity, suppresses UV-induced NETosis, indicating that UV induces NOX-independent NETosis. Like classical NOX-dependent and -independent NETosis, UV-induced NETosis requires transcriptional firing for chromatin decondensation. Cell death-specific inhibitor studies indicate that UV-mediated NETosis is not apoptosis, necrosis or necroptosis. Collectively, these studies indicate that increasing doses of UV irradiation induce both apoptosis and NETosis simultaneously, but the ultimate outcome is the induction of a novel form of NOX-independent NETosis, or “ApoNETosis”.
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10
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Sandlin RD, Wong KHK, Boneschansker L, Carey TR, Miller KL, Rose G, Haber DA, Maheswaran S, Irimia D, Stott SL, Toner M. Preservative solution that stabilizes erythrocyte morphology and leukocyte viability under ambient conditions. Sci Rep 2017; 7:5658. [PMID: 28720788 PMCID: PMC5515929 DOI: 10.1038/s41598-017-05978-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 04/07/2017] [Indexed: 01/04/2023] Open
Abstract
The deterioration of whole blood ex vivo represents a logistical hurdle in clinical and research settings. Here, a cocktail preservative is described that stabilizes leukocyte viability and erythrocyte morphology in whole blood under ambient storage. Neutrophil biostabilization was explored using a sophisticated microfluidic assay to examine the effectiveness of caspase inhibition to stabilize purified neutrophils. Following 72 h ambient storage, neutrophils remained fully functional to migrate towards chemical cues and maintained their ability to undergo NETosis after stimulation. Furthermore, stored neutrophils exhibited improved CD45 biomarker retention and reduced apoptosis and mortality compared to untreated controls. To stabilize erythrocyte morphology, a preservative solution was formulated using Taguchi methods of experimental design, and combined with the caspase inhibitor to form a whole blood cocktail solution, CSWB. CSWB was evaluated in blood from healthy donors and from women with metastatic breast cancer stored under ambient conditions for 72 h. CSWB-treated samples showed a significant improvement in erythrocyte morphology compared to untreated controls. Leukocytes in CSWB-treated blood exhibited significantly higher viability and CD45 biomarker retention compared to untreated controls. This 72 h shelf life under ambient conditions represents an opportunity to transport isolates or simply ease experimental timelines where blood degradation is problematic.
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Affiliation(s)
- Rebecca D Sandlin
- BioMEMS Resource Center, Center for Engineering in Medicine, & Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Keith H K Wong
- BioMEMS Resource Center, Center for Engineering in Medicine, & Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Leo Boneschansker
- BioMEMS Resource Center, Center for Engineering in Medicine, & Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Thomas R Carey
- BioMEMS Resource Center, Center for Engineering in Medicine, & Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Kathleen L Miller
- BioMEMS Resource Center, Center for Engineering in Medicine, & Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Gregory Rose
- BioMEMS Resource Center, Center for Engineering in Medicine, & Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Daniel A Haber
- Cancer Center & Department of Medicine, Massachusetts, MA General Hospital, Harvard Medical School, Boston, MA, 02114, USA.,Howard Hughes Medical Institute, Chevy Chase, MD, 20815, USA
| | - Shyamala Maheswaran
- Cancer Center & Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Daniel Irimia
- BioMEMS Resource Center, Center for Engineering in Medicine, & Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Shannon L Stott
- Cancer Center, Department of Medicine, & BioMEMS Resource Center, Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
| | - Mehmet Toner
- BioMEMS Resource Center, Center for Engineering in Medicine, & Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
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11
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Expression and regulation of drug transporters in vertebrate neutrophils. Sci Rep 2017; 7:4967. [PMID: 28694436 PMCID: PMC5504015 DOI: 10.1038/s41598-017-04785-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 05/19/2017] [Indexed: 12/16/2022] Open
Abstract
There remains a need to identify novel pro-resolution drugs for treatment of inflammatory disease. To date, there are no neutrophil-specific anti-inflammatory treatments in clinical use, perhaps due to our lack of understanding of how drugs access this complex cell type. Here we present the first comprehensive description and expression of both major classes of drug transporters, SLC and ABC, in resting human blood neutrophils. Moreover, we have studied the expression of these carriers in the tractable model system, the zebrafish (Danio rerio), additionally examining the evolutionary relationship between drug transporters in zebrafish and humans. We anticipate that this will be a valuable resource to the field of inflammation biology and will be an important asset in future anti-inflammatory drug design.
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12
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Robertson JD, Ward JR, Avila-Olias M, Battaglia G, Renshaw SA. Targeting Neutrophilic Inflammation Using Polymersome-Mediated Cellular Delivery. THE JOURNAL OF IMMUNOLOGY 2017; 198:3596-3604. [PMID: 28289157 PMCID: PMC5392731 DOI: 10.4049/jimmunol.1601901] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 02/15/2017] [Indexed: 12/19/2022]
Abstract
Neutrophils are key effector cells in inflammation and play an important role in neutralizing invading pathogens. During inflammation resolution, neutrophils undergo apoptosis before they are removed by macrophages, but if apoptosis is delayed, neutrophils can cause extensive tissue damage and chronic disease. Promotion of neutrophil apoptosis is a potential therapeutic approach for treating persistent inflammation, yet neutrophils have proven difficult cells to manipulate experimentally. In this study, we deliver therapeutic compounds to neutrophils using biocompatible, nanometer-sized synthetic vesicles, or polymersomes, which are internalized by binding to scavenger receptors and subsequently escape the early endosome through a pH-triggered disassembly mechanism. This allows polymersomes to deliver molecules into the cell cytosol of neutrophils without causing cellular activation. After optimizing polymersome size, we show that polymersomes can deliver the cyclin-dependent kinase inhibitor (R)-roscovitine into human neutrophils to promote apoptosis in vitro. Finally, using a transgenic zebrafish model, we show that encapsulated (R)-roscovitine can speed up inflammation resolution in vivo more efficiently than the free drug. These results show that polymersomes are effective intracellular carriers for drug delivery into neutrophils. This has important consequences for the study of neutrophil biology and the development of neutrophil-targeted therapeutics.
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Affiliation(s)
- James D Robertson
- Department of Biomedical Science, University College London, London WC1E 6BT, United Kingdom.,Division of Infection and Immunity, University College London, London WC1E 6BT, United Kingdom.,The Bateson Centre, The University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom
| | - Jon R Ward
- Division of Infection and Immunity, University College London, London WC1E 6BT, United Kingdom.,The Bateson Centre, The University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom
| | - Milagros Avila-Olias
- Department of Biomedical Science, University College London, London WC1E 6BT, United Kingdom
| | - Giuseppe Battaglia
- Department of Chemistry, University College London, London WC1E 6BT, United Kingdom; and .,The Medical Research Council/University College London Centre for Molecular and Medical Virology, University College London, London WC1E 6BT, United Kingdom
| | - Stephen A Renshaw
- Division of Infection and Immunity, University College London, London WC1E 6BT, United Kingdom; .,The Bateson Centre, The University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom
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13
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Abstract
Upon entry to the systemic circulation, neutrophils exhibit a short mean time to cell death. The viability of most cell types in a steady state is preserved by the interplay of the Bcl-2 family of proteins, wherein the anti-apoptotic members inhibit the action of their pro-apoptotic counterparts. Neutrophils, however, display absent or severely reduced expression of several anti-apoptotic Bcl-2 family proteins. Hence, they rely on the expression of Mcl-1, an anti-apoptotic member of the Bcl-2 family, for survival. This protein is uniquely short-lived relative to related proteins and its loss likely precipitates the induction of apoptosis in neutrophils. This review describes the role of Mcl-1 in the neutrophil in the context of apoptosis and highlights the proteins' importance to the cell. We also address neutrophil apoptosis in the broader context of the cells' response to pathogens, focussing particularly on the strategies used by pathogens to manipulate the apoptotic pathway to their own ends.
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Affiliation(s)
- Mark P Murphy
- Centre for Microbial-Host Interactions, Institute of Technology Tallaght, Old Blessington Road, Tallaght, Dublin 24, Ireland,
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14
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Tanshinone IIA Protects against Dextran Sulfate Sodium- (DSS-) Induced Colitis in Mice by Modulation of Neutrophil Infiltration and Activation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:7916763. [PMID: 26881040 PMCID: PMC4735939 DOI: 10.1155/2016/7916763] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 10/09/2015] [Accepted: 10/13/2015] [Indexed: 12/19/2022]
Abstract
Neutrophils play a critical role in the initiation and maintenance of intestinal inflammation. However, conventional neutrophil-targeted therapies can impair normal host defense. Tanshinone IIA has been recently revealed to act directly on neutrophils. Hence, we aimed at investigating whether Tanshinone IIA can protect against experimental colitis through modulation of neutrophils. We induced colitis in C57BL/6 mice by giving 3% dextran sulfate sodium (DSS) orally, and meanwhile, we treated mice daily with Tanshinone IIA intraperitoneally. The severity of colitis was evaluated by calculating disease activity index (DAI) and histological parameters. Neutrophil infiltration and activation in the colons of mice were measured. Moreover, whether Tanshinone IIA has direct effects on neutrophil migration and activation was determined in vitro. Our data showed that Tanshinone IIA significantly ameliorated the severity of DSS-induced colitis in mice, evidenced by the reduced DAI and improved colonic inflammation. In addition, Tanshinone IIA decreased neutrophil infiltration of intestinal mucosa and activation and reduced colonic inflammatory cytokines in DSS-treated mice. Furthermore, Tanshinone IIA was demonstrated to significantly suppress neutrophil migration and activation. These results provide compelling evidence that Tanshinone IIA has a therapeutic potential for alleviating inflammatory colitis in mice, which is possibly mediated by the immunomodulation of neutrophils.
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15
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Thomas HB, Moots RJ, Edwards SW, Wright HL. Whose Gene Is It Anyway? The Effect of Preparation Purity on Neutrophil Transcriptome Studies. PLoS One 2015; 10:e0138982. [PMID: 26401909 PMCID: PMC4581699 DOI: 10.1371/journal.pone.0138982] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 09/08/2015] [Indexed: 01/07/2023] Open
Abstract
Protocols for the isolation of neutrophils from whole blood often result in neutrophil preparations containing low numbers (~5%) of contaminating leukocytes, and it is possible that these contaminating cells contribute to highly sensitive assays that measure neutrophil gene expression (e.g. qPCR). We investigated the contribution of contaminating leukocytes on the transcriptome profile of human neutrophils following stimulation with inflammatory cytokines (GM-CSF, TNFα), using RNA-Seq. Neutrophils were isolated using Polymorphprep or the StemCell untouched neutrophil isolation kit (negative selection of “highly pure” neutrophils). The level of contamination was assessed by morphology and flow cytometry. The major source of contamination in Polymorphprep neutrophil preparations was from eosinophils and was highly donor dependent. Contaminating cells were largely, but not completely, absent in neutrophil suspensions prepared using negative selection, but the overall yield of neutrophils was decreased by around 50%. RNA-seq analysis identified only 25 genes that were significantly differentially-expressed between Polymorphprep and negatively-selected neutrophils across all three treatment groups (untreated, GM-CSF, TNFα). The expression levels of 34 cytokines/chemokines both before and after GM-CSF or TNFα treatment were not significantly different between neutrophil isolation methods and therefore not affected by contributions from non-neutrophil cell types. This work demonstrates that low numbers (<5%) of contaminating leukocytes in neutrophil preparations contribute very little to the overall gene expression profile of cytokine-stimulated neutrophils, and that protocols for the isolation of highly pure neutrophils result in significantly lower yields of cells which may hinder investigations where large numbers of cells are required or where volumes of blood are limited.
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Affiliation(s)
- Huw B. Thomas
- Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Robert J. Moots
- Institute of Ageing and Chronic Disease, University Hospital Aintree, University of Liverpool, Liverpool, United Kingdom
| | - Steven W. Edwards
- Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Helen L. Wright
- Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
- * E-mail:
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16
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Espinasse MA, Pépin A, Virault-Rocroy P, Szely N, Chollet-Martin S, Pallardy M, Biola-Vidamment A. Glucocorticoid-Induced Leucine Zipper Is Expressed in Human Neutrophils and Promotes Apoptosis through Mcl-1 Down-Regulation. J Innate Immun 2015; 8:81-96. [PMID: 26384220 DOI: 10.1159/000439052] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 07/29/2015] [Indexed: 01/19/2023] Open
Abstract
Glucocorticoid-induced leucine zipper (GILZ) is a potent anti-inflammatory protein, the expression of which is mainly induced by glucocorticoids (GCs) in haematopoietic cells. GILZ regulates signal transduction pathways of inflammation and plays a role in cell survival. The objective of this study was to evaluate the expression and mechanisms of action of GILZ in the apoptosis of human neutrophils. GILZ expression was induced by GCs in human neutrophils, enhanced upon phosphatidylinositol 3-kinase inhibition and resulted in apoptosis amplification. We then stably transfected PLB-985 cells with the human gilz gene and differentiated both control and GILZ-overexpressing clones in neutrophil-like cells. GILZ overexpression in PLB-985 cells led to an exacerbated apoptosis, associated with caspase-3, caspase-9 and caspase-8 activations, and a loss of mitochondrial potential, suggesting that GILZ-induced apoptosis used the mitochondrial pathway. The expression of BH3 interacting domain death agonist, Bcl-2 interacting mediator of cell death, annexin-A1 and Bcl-2-associated X was not affected in PLB-985-GILZ clones, but phosphorylation and subsequent proteasomal degradation of myeloid cell leukemia-1 (Mcl-1) were observed. Noteworthy, Mcl-1 phosphorylation was related to a significant and sustained activation of c-Jun N-terminal kinase (JNK) in PLB-985-GILZ clones. These results reveal GILZ to be a new actor in apoptosis regulation in neutrophil-like cells involving JNK and Mcl-1.
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Affiliation(s)
- Marie-Alix Espinasse
- UMR996 - Inflammation, Chemokines and Immunopathology, Inserm, Universitx00E9; Paris-Sud, Universitx00E9; Paris-Saclay, Chx00E2;tenay-Malabry, France
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17
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Kim YS, Lee M, Lee JH, Lee HJ, Park CM. The unified ICE-CBF pathway provides a transcriptional feedback control of freezing tolerance during cold acclimation in Arabidopsis. PLANT MOLECULAR BIOLOGY 2015; 89:187-201. [PMID: 26311645 DOI: 10.1007/s11103-015-0365-3] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 08/21/2015] [Indexed: 05/18/2023]
Abstract
During cold acclimation, C-repeat binding factors (CBFs) activate downstream targets, such as cold-regulated genes, leading to the acquisition of freezing tolerance in plants. Inducer of CBF expression 1 (ICE1) plays a key role by activating CBF3 expression in shaping the cold-induced transcriptome. While the ICE1-CBF3 regulon constitutes a major cold acclimation pathway, gene regulatory networks governing the CBF signaling are poorly understood. Here, we demonstrated that ICE1 and its paralog ICE2 induce CBF1, CBF2, and CBF3 by binding to the gene promoters. ICE2, like ICE1, was ubiquitinated by the high expression of osmotically responsive gene 1 (HOS1) E3 ubiquitin ligase. Whereas ICE2-defective ice2-2 mutant did not exhibit any discernible freezing-sensitive phenotypes, ice1-2 ice2-2/+ plant, which is defective in ICE1 and has a heterozygotic ice2 mutation, exhibited significantly reduced freezing tolerance. Accordingly, all three CBF genes were markedly down-regulated in the ice1-2 ice2-2/+ plant, indicating that ICE1 and ICE2 are functionally redundant with different implementations in inducing CBF genes. Together with the negative regulation of CBF3 by CBF2, we propose that the unified ICE-CBF pathway provides a transcriptional feedback of freezing tolerance to sustain plant development and survival during cold acclimation.
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Affiliation(s)
- Ye Seul Kim
- Department of Chemistry, Seoul National University, Seoul, 151-742, Korea
| | - Minyoung Lee
- Department of Chemistry, Seoul National University, Seoul, 151-742, Korea
| | - Jae-Hyung Lee
- Department of Chemistry, Seoul National University, Seoul, 151-742, Korea
| | - Hyo-Jun Lee
- Department of Chemistry, Seoul National University, Seoul, 151-742, Korea.
| | - Chung-Mo Park
- Department of Chemistry, Seoul National University, Seoul, 151-742, Korea.
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, 151-742, Korea.
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18
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Hornstein T, Lehmann S, Philipp D, Detmer S, Hoffmann M, Peter C, Wesselborg S, Unfried K, Windolf J, Flohé S, Paunel-Görgülü A. Staurosporine resistance in inflammatory neutrophils is associated with the inhibition of caspase- and proteasome-mediated Mcl-1 degradation. J Leukoc Biol 2015; 99:163-74. [PMID: 26310832 DOI: 10.1189/jlb.3a1114-537rr] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 07/28/2015] [Indexed: 11/24/2022] Open
Abstract
Apoptosis resistance in activated neutrophils is known to be associated with collateral damage of surrounding tissue, as well as immune and organ dysfunction. Thus, the safe removal of neutrophils by apoptosis induction represents a prerequisite for the resolution of inflammation. Here, we report that intrinsic apoptosis resistance in human neutrophils, isolated from severely injured patients, is based on enhanced stabilization of antiapoptotic myeloid cell leukemia 1 and subsequent impairment of downstream apoptotic pathways. Whereas extrinsic apoptosis induction by the activation of Fas death receptor on inflammatory neutrophils was accompanied by caspase- and proteasome-mediated myeloid cell leukemia 1 degradation, intrinsic apoptosis induction by staurosporine led to a significant stabilization of myeloid cell leukemia 1 protein, which impeded on truncated forms of B cell lymphoma 2-associated X protein and B cell lymphoma 2 homology domain 3-interacting domain death translocation and subsequent cytochrome c release from the mitochondria. We show further that profound inhibition of myeloid cell leukemia 1 degradation is based on the inhibition of caspases and sustained activation of kinases involved in cell survival, such as Akt. Accordingly, impeded myeloid cell leukemia 1 phosphorylation on Ser159 by glycogen synthase kinase 3 and protein ubiquitination has been demonstrated. Inhibition of myeloid cell leukemia 1 activity markedly increased sensitivity to staurosporine-induced cell death. Altogether, these results provide new insights into the mechanisms underlying myeloid cell leukemia 1-mediated apoptosis resistance to staurosporine under inflammatory situations and should be considered for the development of novel therapeutic strategies.
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Affiliation(s)
- Tamara Hornstein
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Sarah Lehmann
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Denise Philipp
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Susanne Detmer
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Michèle Hoffmann
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Christoph Peter
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Sebastian Wesselborg
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Klaus Unfried
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Joachim Windolf
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Sascha Flohé
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Adnana Paunel-Görgülü
- *IUF Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany; Department of Trauma and Hand Surgery, University Hospital Düsseldorf, Düsseldorf, Germany; and Department of Urology and Institute of Molecular Medicine, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
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19
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Lee HJ, Lee EK, Seo YE, Shin YH, Kim HS, Chun YH, Yoon JS, Kim HH, Han MY, Kim CK, Kim KE, Koh YY, Kim JT. Roles of Bcl-2 and caspase-9 and -3 in CD30-induced human eosinophil apoptosis. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2015; 50:145-152. [PMID: 26254825 DOI: 10.1016/j.jmii.2015.05.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 04/01/2015] [Accepted: 05/28/2015] [Indexed: 12/14/2022]
Abstract
BACKGROUND/PURPOSE Activation of cell surface CD30 by immobilized anti-CD30 monoclonal antibodies (mAb) induces strong apoptosis in human eosinophils. This anti-CD30 mAb-induced eosinophil apoptosis is inhibited by the addition of inhibitors of p38, ERK1/2 mitogen-activated protein kinases, and phosphatidylinositol 3-kinase. However, there is little data investigating the role of Bcl-2 and caspases in eosinophil apoptosis induced by anti-CD30 mAb. We sought to determine whether anti-CD30 mAb induces human eosinophil apoptosis via Bcl-2 and caspase pathways. METHODS Peripheral blood was drawn from 37 healthy volunteers. The CD30 expression on eosinophils was measured at various time points. Eosinophils were then cultured in plates precoated with anti-CD30 mAb (clone Ber-H8), isotype control immunoglobulin G1, interleukin (IL)-5, or dexamethasone. Western blot analysis was performed to determine the expression of Bcl-2, procaspase-8, -9, and -3, and caspase-8, -9, and -3 after cross-linking of CD30. Human eosinophils were also cultured in plates precoated with anti-CD30 mAb (clone Ber-H8) in the presence or absence of caspase-9 or -3 inhibitors. Eosinophil apoptosis was assessed using flow cytometry. RESULTS The addition of anti-CD30 mAb significantly increased eosinophil apoptosis compared with controls. In western blot analysis, the addition of anti-CD30 mAb significantly decreased the expression of Bcl-2 and procaspase-9 and -3 and increased the expression of caspase-9 and -3. The addition of caspase-9 or -3 inhibitors decreased anti-CD30 mAb-induced human eosinophil apoptosis. Procaspase-8 or caspase-8 expression was not changed in response to various stimuli. CONCLUSION Anti-CD30 mAb-induced human eosinophil apoptosis is likely to be mediated through Bcl-2 and caspase-9 and -3.
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Affiliation(s)
- Hye Jin Lee
- Department of Pediatrics, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Eun-Kyoung Lee
- Department of Pediatrics, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Young Eun Seo
- Department of Pediatrics, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Youn Ho Shin
- Department of Medicine, The Graduate School, Yonsei University, Seoul, Republic of Korea; Department of Pediatrics, CHA University School of Medicine, Seoul, Republic of Korea
| | - Hwan Soo Kim
- Department of Pediatrics, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yoon Hong Chun
- Department of Pediatrics, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jong-Seo Yoon
- Department of Pediatrics, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyun Hee Kim
- Department of Pediatrics, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Man Yong Han
- Department of Pediatrics, CHA University School of Medicine, Seoul, Republic of Korea
| | - Chang-Keun Kim
- Asthma and Allergy Center, Department of Pediatrics, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea
| | - Kyu-Earn Kim
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young Yull Koh
- Department of Pediatrics, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jin Tack Kim
- Department of Pediatrics, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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20
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van den Berg E, Bal SM, Kuipers MT, Matute-Bello G, Lutter R, Bos AP, van Woensel JBM, Bem RA. The caspase inhibitor zVAD increases lung inflammation in pneumovirus infection in mice. Physiol Rep 2015; 3:3/3/e12332. [PMID: 25780096 PMCID: PMC4393166 DOI: 10.14814/phy2.12332] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Severe respiratory syncytial virus (RSV) disease is a frequent cause of acute respiratory distress syndrome (ARDS) in young children, and is associated with marked lung epithelial injury and neutrophilic inflammation. Experimental studies on ARDS have shown that inhibition of apoptosis in the lungs reduces lung epithelial injury. However, the blockade of apoptosis in the lungs may also have deleterious effects by hampering viral clearance, and importantly, by enhancing or prolonging local proinflammatory responses. The aim of this study was to determine the effect of the broad caspase inhibitor Z-VAD(OMe)-FMK (zVAD) on inflammation and lung injury in a mouse pneumovirus model for severe RSV disease. Eight- to 11-week-old female C57BL/6OlaHsd mice were inoculated with the rodent-specific pneumovirus pneumonia virus of mice (PVM) strain J3666 and received multiple injections of zVAD or vehicle (control) during the course of disease, after which they were studied for markers of apoptosis, inflammation, and lung injury on day 7 after infection. PVM-infected mice that received zVAD had a strong increase in neutrophil numbers in the lungs, which was associated with decreased neutrophil apoptosis. Furthermore, zVAD treatment led to higher concentrations of several proinflammatory cytokines in the lungs and more weight loss in PVM-infected mice. In contrast, zVAD did not reduce apoptosis of lung epithelial cells and did not affect the degree of lung injury, permeability, and viral titers in PVM disease. We conclude that zVAD has an adverse effect in severe pneumovirus disease in mice by enhancing the lung proinflammatory response.
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Affiliation(s)
- Elske van den Berg
- Pediatric Intensive Care Unit, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Suzanne M Bal
- Department of Respiratory Medicine and Experimental Immunology, Academic Medical Center, Amsterdam, The Netherlands
| | - Maria T Kuipers
- Laboratory of Experimental Intensive Care, Academic Medical Center, Amsterdam, The Netherlands
| | - Gustavo Matute-Bello
- Division of Pulmonary and Critical Care Medicine, the Center for Lung Biology, University of Washington, Seattle, Washington, USA
| | - René Lutter
- Department of Respiratory Medicine and Experimental Immunology, Academic Medical Center, Amsterdam, The Netherlands
| | - Albert P Bos
- Pediatric Intensive Care Unit, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Job B M van Woensel
- Pediatric Intensive Care Unit, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Reinout A Bem
- Pediatric Intensive Care Unit, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
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21
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Jin JO, Yu Q. Fucoidan delays apoptosis and induces pro-inflammatory cytokine production in human neutrophils. Int J Biol Macromol 2014; 73:65-71. [PMID: 25445688 DOI: 10.1016/j.ijbiomac.2014.10.059] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 10/25/2014] [Accepted: 10/30/2014] [Indexed: 01/19/2023]
Abstract
Although some immune modulatory effects of fucoidan have been elucidated, the effects of fucoidan on the apoptosis and activation of human neutrophils have not been investigated. In this study, we demonstrated that fucoidan purified from the brown seaweed Undaria pinnatifilda delays spontaneous apoptosis of human neutrophils and induces their activation. Fucoidan treatment inhibited apoptotic nuclei changes and phosphatidyl serine (PS) exposure on neutrophils cultured in vitro for 24h. The delay in neutrophil apoptosis mediated by fucoidan was associated with increased levels of the anti-apoptotic protein Mcl-1 and decreased levels of activated caspase-3. Screening of the signaling pathways by specific inhibitors indicated that fucoidan-induced delay in neutrophil apoptosis was dependent on the activation of PI3K/AKT signaling pathway, whereas MAPK signaling pathway was not critical. In addition, fucoidan enhanced the production of IL-6, IL-8 and TNF-α from neutrophils in an AKT-dependent manner. Taken together, these results demonstrated that fucoidan delays human neutrophil apoptosis and induces their production of pro-inflammatory cytokines. This knowledge could facilitate the development of novel therapeutic strategies for infectious diseases and neutropenia by controlling neutrophil homeostasis and function with fucoidan.
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Affiliation(s)
- Jun-O Jin
- Shanghai Public Health Clinical Center, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Qing Yu
- Department of Immunology and Infectios Diseases, The Forsyth Institute, Cambridge, MA, USA
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22
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Machado ID, Santin JR, Drewes CC, Gil CD, Oliani SM, Perretti M, Farsky SHP. Alterations in the profile of blood neutrophil membrane receptors caused by in vivo adrenocorticotrophic hormone actions. Am J Physiol Endocrinol Metab 2014; 307:E754-63. [PMID: 25184992 DOI: 10.1152/ajpendo.00227.2014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Elevated levels of adrenocorticotrophic hormone (ACTH) mobilize granulocytes from bone marrow into the blood, although these neutrophils are refractory to a full migratory response into inflamed tissues. Here, we investigated the dependence of glucocorticoid receptor activation and glucocorticoid-regulated protein annexin A1 (ANXA1) on ACTH-induced neutrophilia and the phenotype of blood neutrophil after ACTH injection, focusing on adhesion molecule expressions and locomotion properties. ACTH injection (5 μg ip, 4 h) induced neutrophilia in wild-type (WT) mice and did not alter the elevated numbers of neutrophils in RU-38486 (RU)-pretreated or ANXA1(-/-) mice injected with ACTH. Neutrophils from WT ACTH-treated mice presented higher expression of Ly6G⁺ANXA1(high), CD18(high), CD62L(high), CD49(high), CXCR4(high), and formyl-peptide receptor 1 (FPR1(low)) than those observed in RU-pretreated or ANXA1(-/-) mice. The membrane phenotype of neutrophils collected from WT ACTH-treated mice was paralleled by elevated fractions of rolling and adherent leukocytes to the cremaster postcapillary venules together with impaired neutrophil migration into inflamed air pouches in vivo and in vitro reduced formyl-methionyl-leucyl-phenylalanine (fMLP) or stromal-derived factor-1 (SDF-1α)-induced chemotaxis. In an 18-h senescence protocol, neutrophils from WT ACTH-treated mice had a higher proportion of ANXAV(low)/CXCR4(low), and they were less phagocytosed by peritoneal macrophages. We conclude that alterations on HPA axis affect the pattern of membrane receptors in circulating neutrophils, which may lead to different neutrophil phenotypes in the blood. Moreover, ACTH actions render circulating neutrophils to a phenotype with early reactivity, such as in vivo leukocyte-endothelial interactions, but with impaired locomotion and clearance.
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MESH Headings
- Adrenocorticotropic Hormone/administration & dosage
- Adrenocorticotropic Hormone/antagonists & inhibitors
- Adrenocorticotropic Hormone/blood
- Adrenocorticotropic Hormone/metabolism
- Animals
- Annexin A1/blood
- Annexin A1/genetics
- Annexin A1/metabolism
- Cell Membrane/drug effects
- Cell Membrane/metabolism
- Cells, Cultured
- Chemotaxis, Leukocyte/drug effects
- Corticosterone/blood
- Corticosterone/metabolism
- Hormone Antagonists/pharmacology
- Leukopoiesis/drug effects
- Macrophages/drug effects
- Macrophages/immunology
- Macrophages/metabolism
- Macrophages/pathology
- Male
- Mice, Inbred BALB C
- Mice, Knockout
- Neutrophils/drug effects
- Neutrophils/immunology
- Neutrophils/metabolism
- Neutrophils/pathology
- Phagocytosis/drug effects
- Receptors, Corticotropin/agonists
- Receptors, Corticotropin/antagonists & inhibitors
- Receptors, Corticotropin/blood
- Receptors, Corticotropin/metabolism
- Stress, Physiological/drug effects
- Stress, Psychological/blood
- Stress, Psychological/immunology
- Stress, Psychological/metabolism
- Stress, Psychological/pathology
- Surface Properties/drug effects
- Up-Regulation/drug effects
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Affiliation(s)
- Isabel Daufenback Machado
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - José Roberto Santin
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Carine Cristiane Drewes
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Cristiane Damas Gil
- Department of Morphology and Genetics, Federal University of São Paulo, Sao Paulo, Brazil
| | - Sonia Maria Oliani
- Department of Biology, Instituto de Biociências, Letras e Ciências Exatas, São Paulo State University, São José do Rio Preto, Brazil; and
| | - Mauro Perretti
- The William Harvey Research Institute, Barts and The London School of Medicine, Queen Mary University of London, London, United Kingdom
| | - Sandra Helena Poliselli Farsky
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil;
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23
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Allaeys I, Gymninova I, Canet-Jourdan C, Poubelle PE. IL-32γ delays spontaneous apoptosis of human neutrophils through MCL-1, regulated primarily by the p38 MAPK pathway. PLoS One 2014; 9:e109256. [PMID: 25275312 PMCID: PMC4183585 DOI: 10.1371/journal.pone.0109256] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Accepted: 09/09/2014] [Indexed: 12/21/2022] Open
Abstract
IL-32γ is a multifunctional cytokine involved in various inflammatory and auto-immune diseases in which neutrophils can affect the evolution of these diseases. To persist at inflammatory sites, neutrophils require inhibition of their rapid and constitutive apoptosis, an inhibitory effect that phlogogenic cytokines support. To date, the effects of IL-32γ on neutrophils remain unknown. We demonstrate that IL-32γ delays, in a dose-dependent manner, the spontaneous apoptosis of human blood neutrophils by activating mainly p38 MAPK through rapid p38 phosphorylation. PI3-K and ERK1/2 MAPK are also involved, but to a lesser extent. Most of cytokines that induce retardation of neutrophil apoptosis activate the expression of MCL-1 at both mRNA and protein levels. IL-32γ added to human blood neutrophils in vitro is associated with sustained levels of MCL-1 protein. This effect in neutrophils corresponds to a decrease of MCL-1 protein degradation without any effect on MCL-1 mRNA levels. The sustained levels of MCL-1 induced by IL-32γ are only abrogated by the p38β MAPK inhibitor SB202190. Additionally, IL-32γ induces a reduction in caspase 3 activity in neutrophils. In conclusion, IL-32γ affects human blood neutrophils in vitro by increasing their survival, suggesting that this cytokine could have profound effects on the deleterious functions of neutrophils in several diseases.
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Affiliation(s)
- Isabelle Allaeys
- Centre de Recherche en Rhumatologie et Immunologie (CRRI), Centre de Recherche du CHU de Québec, Département de Médecine, Université Laval, Québec, Canada
| | - Irina Gymninova
- Centre de Recherche en Rhumatologie et Immunologie (CRRI), Centre de Recherche du CHU de Québec, Département de Médecine, Université Laval, Québec, Canada
| | - Charlotte Canet-Jourdan
- Centre de Recherche en Rhumatologie et Immunologie (CRRI), Centre de Recherche du CHU de Québec, Département de Médecine, Université Laval, Québec, Canada
| | - Patrice E. Poubelle
- Centre de Recherche en Rhumatologie et Immunologie (CRRI), Centre de Recherche du CHU de Québec, Département de Médecine, Université Laval, Québec, Canada
- * E-mail:
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24
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Lucas CD, Dorward DA, Tait MA, Fox S, Marwick JA, Allen KC, Robb CT, Hirani N, Haslett C, Duffin R, Rossi AG. Downregulation of Mcl-1 has anti-inflammatory pro-resolution effects and enhances bacterial clearance from the lung. Mucosal Immunol 2014; 7:857-68. [PMID: 24280938 PMCID: PMC3940382 DOI: 10.1038/mi.2013.102] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 10/12/2013] [Indexed: 02/07/2023]
Abstract
Phagocytes not only coordinate acute inflammation and host defense at mucosal sites, but also contribute to tissue damage. Respiratory infection causes a globally significant disease burden and frequently progresses to acute respiratory distress syndrome, a devastating inflammatory condition characterized by neutrophil recruitment and accumulation of protein-rich edema fluid causing impaired lung function. We hypothesized that targeting the intracellular protein myeloid cell leukemia 1 (Mcl-1) by a cyclin-dependent kinase inhibitor (AT7519) or a flavone (wogonin) would accelerate neutrophil apoptosis and resolution of established inflammation, but without detriment to bacterial clearance. Mcl-1 loss induced human neutrophil apoptosis, but did not induce macrophage apoptosis nor impair phagocytosis of apoptotic neutrophils. Neutrophil-dominant inflammation was modelled in mice by either endotoxin or bacteria (Escherichia coli). Downregulating inflammatory cell Mcl-1 had anti-inflammatory, pro-resolution effects, shortening the resolution interval (Ri) from 19 to 7 h and improved organ dysfunction with enhanced alveolar-capillary barrier integrity. Conversely, attenuating drug-induced Mcl-1 downregulation inhibited neutrophil apoptosis and delayed resolution of endotoxin-mediated lung inflammation. Importantly, manipulating lung inflammatory cell Mcl-1 also accelerated resolution of bacterial infection (Ri; 50 to 16 h) concurrent with enhanced bacterial clearance. Therefore, manipulating inflammatory cell Mcl-1 accelerates inflammation resolution without detriment to host defense against bacteria, and represents a target for treating infection-associated inflammation.
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Affiliation(s)
- C D Lucas
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK,()
| | - D A Dorward
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK
| | - M A Tait
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK
| | - S Fox
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK,Department of Pathology, University of California, San Diego, California, USA
| | - J A Marwick
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK
| | - K C Allen
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK
| | - C T Robb
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK
| | - N Hirani
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK
| | - C Haslett
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK
| | - R Duffin
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK
| | - A G Rossi
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, Edinburgh, Scotland, UK
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25
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Robertson AL, Holmes GR, Bojarczuk AN, Burgon J, Loynes CA, Chimen M, Sawtell AK, Hamza B, Willson J, Walmsley SR, Anderson SR, Coles MC, Farrow SN, Solari R, Jones S, Prince LR, Irimia D, Rainger GE, Kadirkamanathan V, Whyte MKB, Renshaw SA. A zebrafish compound screen reveals modulation of neutrophil reverse migration as an anti-inflammatory mechanism. Sci Transl Med 2014; 6:225ra29. [PMID: 24574340 PMCID: PMC4247228 DOI: 10.1126/scitranslmed.3007672] [Citation(s) in RCA: 178] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Diseases of failed inflammation resolution are common and largely incurable. Therapeutic induction of inflammation resolution is an attractive strategy to bring about healing without increasing susceptibility to infection. However, therapeutic targeting of inflammation resolution has been hampered by a lack of understanding of the underlying molecular controls. To address this drug development challenge, we developed an in vivo screen for proresolution therapeutics in a transgenic zebrafish model. Inflammation induced by sterile tissue injury was assessed for accelerated resolution in the presence of a library of known compounds. Of the molecules with proresolution activity, tanshinone IIA, derived from a Chinese medicinal herb, potently induced inflammation resolution in vivo both by induction of neutrophil apoptosis and by promoting reverse migration of neutrophils. Tanshinone IIA blocked proinflammatory signals in vivo, and its effects are conserved in human neutrophils, supporting a potential role in treating human inflammation and providing compelling evidence of the translational potential of this screening strategy.
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Affiliation(s)
- Anne L. Robertson
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield S10 2TN, UK
- Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, UK
| | - Geoffrey R. Holmes
- Department of Automatic Control and Systems Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Aleksandra N. Bojarczuk
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield S10 2TN, UK
| | - Joseph Burgon
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield S10 2TN, UK
| | - Catherine A. Loynes
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield S10 2TN, UK
- Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, UK
| | - Myriam Chimen
- Centre for Cardiovascular Sciences, School of Clinical and Experimental Medicine, University of Birmingham, Birmingham B15 2TT, UK
| | - Amy K. Sawtell
- Centre for Immunology and Infection, Department of Biology, University of York, York YO10 5DD, UK
| | - Bashar Hamza
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Joseph Willson
- Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, UK
| | - Sarah R. Walmsley
- Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, UK
| | - Sean R. Anderson
- Department of Automatic Control and Systems Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Mark C. Coles
- Centre for Immunology and Infection, Department of Biology, University of York, York YO10 5DD, UK
| | - Stuart N. Farrow
- Respiratory Therapy Area, GlaxoSmithKline, Stevenage SG1 2NY, UK
| | - Roberto Solari
- National Heart and Lung Institute, Imperial College London, Norfolk Place, London W2 1PG, UK
| | - Simon Jones
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK
| | - Lynne R. Prince
- Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, UK
| | - Daniel Irimia
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - G. Ed Rainger
- Centre for Cardiovascular Sciences, School of Clinical and Experimental Medicine, University of Birmingham, Birmingham B15 2TT, UK
| | - Visakan Kadirkamanathan
- Department of Automatic Control and Systems Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Moira K. B. Whyte
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield S10 2TN, UK
- Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, UK
| | - Stephen A. Renshaw
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield S10 2TN, UK
- Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, UK
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26
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Burgon J, Robertson AL, Sadiku P, Wang X, Hooper-Greenhill E, Prince LR, Walker P, Hoggett EE, Ward JR, Farrow SN, Zuercher WJ, Jeffrey P, Savage CO, Ingham PW, Hurlstone AF, Whyte MKB, Renshaw SA. Serum and glucocorticoid-regulated kinase 1 regulates neutrophil clearance during inflammation resolution. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2014; 192:1796-805. [PMID: 24431232 PMCID: PMC3921102 DOI: 10.4049/jimmunol.1300087] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The inflammatory response is integral to maintaining health by functioning to resist microbial infection and repair tissue damage. Large numbers of neutrophils are recruited to inflammatory sites to neutralize invading bacteria through phagocytosis and the release of proteases and reactive oxygen species into the extracellular environment. Removal of the original inflammatory stimulus must be accompanied by resolution of the inflammatory response, including neutrophil clearance, to prevent inadvertent tissue damage. Neutrophil apoptosis and its temporary inhibition by survival signals provides a target for anti-inflammatory therapeutics, making it essential to better understand this process. GM-CSF, a neutrophil survival factor, causes a significant increase in mRNA levels for the known anti-apoptotic protein serum and glucocorticoid-regulated kinase 1 (SGK1). We have characterized the expression patterns and regulation of SGK family members in human neutrophils and shown that inhibition of SGK activity completely abrogates the antiapoptotic effect of GM-CSF. Using a transgenic zebrafish model, we have disrupted sgk1 gene function and shown this specifically delays inflammation resolution, without altering neutrophil recruitment to inflammatory sites in vivo. These data suggest SGK1 plays a key role in regulating neutrophil survival signaling and thus may prove a valuable therapeutic target for the treatment of inflammatory disease.
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Affiliation(s)
- Joseph Burgon
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield, United Kingdom
| | - Anne L. Robertson
- Department of Infection and Immunity, University of Sheffield, Sheffield, United Kingdom
| | - Pranvera Sadiku
- Department of Infection and Immunity, University of Sheffield, Sheffield, United Kingdom
| | - Xingang Wang
- Institute of Molecular and Cellular Biology, 61, Biopolis Drive, Proteos, Singapore
| | - Edward Hooper-Greenhill
- Immuno-Inflammation Therapy Area Unit, GlaxoSmithKline Research and Development Ltd., Stevenage, United Kingdom
| | - Lynne R. Prince
- Department of Infection and Immunity, University of Sheffield, Sheffield, United Kingdom
| | - Paul Walker
- Faculty of Life Sciences, Michael Smith Building, Oxford Road, The University of Manchester, Manchester, United Kingdom
| | - Emily E. Hoggett
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield, United Kingdom
| | - Jonathan R. Ward
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield, United Kingdom
| | - Stuart N. Farrow
- Respiratory Therapy Area, GlaxoSmithKline Research and Development Ltd., Stevenage, United Kingdom
| | - William J. Zuercher
- Department of Chemical Biology, GlaxoSmithKline, Research Triangle Park, North Carolina, USA
| | - Philip Jeffrey
- Immuno-Inflammation Therapy Area Unit, GlaxoSmithKline Research and Development Ltd., Stevenage, United Kingdom
| | - Caroline O. Savage
- Immuno-Inflammation Therapy Area Unit, GlaxoSmithKline Research and Development Ltd., Stevenage, United Kingdom
| | - Philip W. Ingham
- Institute of Molecular and Cellular Biology, 61, Biopolis Drive, Proteos, Singapore
| | - Adam F. Hurlstone
- Faculty of Life Sciences, Michael Smith Building, Oxford Road, The University of Manchester, Manchester, United Kingdom
| | - Moira K. B. Whyte
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield, United Kingdom
- Department of Infection and Immunity, University of Sheffield, Sheffield, United Kingdom
| | - Stephen A. Renshaw
- Medical Research Council Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield, United Kingdom
- Department of Infection and Immunity, University of Sheffield, Sheffield, United Kingdom
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27
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El Kebir D, Damlaj A, Filep JG. Toll-like receptor 9 signaling delays neutrophil apoptosis by increasing transcription of Mcl-1. PLoS One 2014; 9:e87006. [PMID: 24466313 PMCID: PMC3899359 DOI: 10.1371/journal.pone.0087006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 12/16/2013] [Indexed: 01/13/2023] Open
Abstract
Neutrophils detect bacterial constituents, including bacterial DNA (CpG DNA), which elicits innate immunity and prolongs the functional life span of neutrophils through suppression of apoptosis. Both the anti-apoptotic protein Mcl-1 and activation of NF-κB have been implicated in neutrophil survival, but there is no evidence that these are linked in neutrophils. We hypothesized that CpG DNA could simultaneously activate these pathways. High purity CpG DNA (0.4–3.2 µg/ml) extended the life span of human neutrophils in vitro by delaying apoptosis through altering the rate of Mcl-1 turnover. CpG DNA slightly decreased Mcl-1 protein level in the presence of cyclohexmide and the proteasome inhibitor MG132 had little effect on Mcl-1 expression in CpG DNA-treated neutrophils. In contrast, CpG DNA evoked rapid increases in DNA binding by NF-κB/p65 and Mcl-1 mRNA. NF-κB inhibitors and the telomere-derived TLR9 inhibitory oligonucleotide 5′-TTT AGG GTT AGG GTT AGG G-3′ markedly reduced Mcl-1 protein levels and subsequently abrogated suppression of apoptosis by CpG DNA. Furthermore, CpG DNA attenuated the decreases in Mcl-1 in both cell lysate and nucleus of neutrophils undergoing spontaneous apoptosis and increased Mcl-1 translocation to the mitochondria, leading to preservation of mitochondrial transmembrane potential. These results demonstrate that CpG DNA through toll-like receptor 9 links two survival signaling pathways by delaying apoptosis through induction of NF-κB-mediated Mcl-1 gene transcription and promoting Mcl-1 translocation to the mitochondria.
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Affiliation(s)
- Driss El Kebir
- Research Center, Maisonneuve-Rosemont Hospital and Department of Pathology and Cell Biology, University of Montréal, Montréal, Quebec, Canada
| | - Anas Damlaj
- Research Center, Maisonneuve-Rosemont Hospital and Department of Pathology and Cell Biology, University of Montréal, Montréal, Quebec, Canada
| | - János G. Filep
- Research Center, Maisonneuve-Rosemont Hospital and Department of Pathology and Cell Biology, University of Montréal, Montréal, Quebec, Canada
- * E-mail:
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28
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Wang X, Robertson AL, Li J, Chai RJ, Haishan W, Sadiku P, Ogryzko NV, Everett M, Yoganathan K, Luo HR, Renshaw SA, Ingham PW. Inhibitors of neutrophil recruitment identified using transgenic zebrafish to screen a natural product library. Dis Model Mech 2013; 7:163-9. [PMID: 24291762 PMCID: PMC3882058 DOI: 10.1242/dmm.012047] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Cell migration is fundamental to the inflammatory response, but uncontrolled cell migration and excess recruitment of neutrophils and other leukocytes can cause damage to the tissue. Here we describe the use of an in vivo model – the Tg(mpx:GFP)i114 zebrafish line, in which neutrophils are labelled by green fluorescent protein (GFP) – to screen a natural product library for compounds that can affect neutrophil migratory behaviour. Among 1040 fungal extracts screened, two were found to inhibit neutrophil migration completely. Subfractionation of these extracts identified sterigmatocystin and antibiotic PF1052 as the active components. Using the EZ-TAXIScan chemotaxis assay, both compounds were also found to have a dosage-dependent inhibitory effect on murine neutrophil migration. Furthermore, neutrophils treated with PF1052 failed to form pseudopods and appeared round in shape, suggesting a defect in PI3-kinase (PI3K) signalling. We generated a transgenic neutrophil-specific PtdIns(3,4,5)P3 (PIP3) reporter zebrafish line, which revealed that PF1052 does not affect the activation of PI3K at the plasma membrane. In human neutrophils, PF1052 neither induced apoptosis nor blocked AKT phosphorylation. In conclusion, we have identified an antibiotic from a natural product library with potent anti-inflammatory properties, and have established the utility of the mpx:GFP transgenic zebrafish for high-throughput in vivo screens for novel inhibitors of neutrophil migration.
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Affiliation(s)
- Xingang Wang
- Institute of Molecular and Cell Biology, 61 Biopolis Drive, Proteos, 138673 Singapore
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29
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Pliyev BK, Menshikov M. Differential effects of the autophagy inhibitors 3-methyladenine and chloroquine on spontaneous and TNF-α-induced neutrophil apoptosis. Apoptosis 2013; 17:1050-65. [PMID: 22638980 DOI: 10.1007/s10495-012-0738-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Autophagy and apoptosis cooperate to modulate cell survival. Neutrophils are short-lived cells and apoptosis is considered to be the major mechanism of their death. In the present study, we addressed whether autophagy regulates neutrophil apoptosis and investigated the effects of autophagy inhibition on apoptosis of human neutrophils. We first showed that the established autophagy inhibitors 3-methyladenine (MA) and chloroquine (CQ) markedly accelerated spontaneous neutrophil apoptosis as was evidenced by phosphatidylserine exposure, DNA fragmentation and caspase-3 activation. Apoptosis induced by the autophagy inhibitors was completely abrogated by a pan-caspase inhibitor Q-VD-OPh. Unexpectedly, both MA and CQ significantly delayed neutrophil apoptosis induced by TNF-α, although the inhibitors did attenuate late pro-survival effect of the cytokine. The effect was specific for TNF-α because it was not observed in the presence of other inflammation-associated cytokines (IL-1β or IL-8). The autophagy inhibitors did not modulate surface expression of TNF-α receptors in the absence or presence of TNF-α. Both MA and CQ induced a marked down-regulation of a key anti-apoptotic protein Mcl-1 but did not affect significantly the levels of another anti-apoptotic protein Bcl-X(L). Finally, to confirm the effects of the pharmacological inhibition of autophagy by a genetic approach, we evaluated the consequences of siRNA-mediated autophagy suppression in neutrophil-like differentiated HL60 cells. Knockdown of ATG5 in the cells resulted in accelerated spontaneous apoptosis but attenuated TNF-α-induced apoptosis. Together, these data suggest that autophagy regulates neutrophil apoptosis in an inflammatory context-dependent manner and mediates the early pro-apoptotic effect of TNF-α in neutrophils.
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Affiliation(s)
- Boris K Pliyev
- Department of Biological and Medical Chemistry, Faculty of Fundamental Medicine, Moscow State University, Lomonosovsky Pr., 31-5, Moscow 119192, Russia.
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30
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Marwick JA, Dorward DA, Lucas CD, Jones KO, Sheldrake TA, Fox S, Ward C, Murray J, Brittan M, Hirani N, Duffin R, Dransfield I, Haslett C, Rossi AG. Oxygen levels determine the ability of glucocorticoids to influence neutrophil survival in inflammatory environments. J Leukoc Biol 2013; 94:1285-92. [PMID: 23964116 PMCID: PMC3855024 DOI: 10.1189/jlb.0912462] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Glucocorticoids lack the capacity to further augment neutrophil survival, in severe hypoxia. GCs are highly effective in treating a wide range of inflammatory diseases but are limited in their ability to control neutrophilic lung inflammation in conditions such as COPD. Neutrophil apoptosis, a central feature of inflammation resolution, is delayed in response to microenvironmental cues, such as hypoxia and inflammatory cytokines, present at inflamed sites. GCs delay neutrophil apoptosis in vitro, and this may therefore limit the ability of GCs to control neutrophilic inflammation. This study assesses the effect GCs have on hypoxia- and inflammatory cytokine-induced neutrophil survival. Human neutrophils were treated with GCs in the presence or absence of GM-CSF or inflammatory macrophage-CM at a range of oxygen concentrations (21–1% oxygen). Neutrophil apoptosis and survival were assessed by flow cytometry and morphological analysis and neutrophil function, by stimulus-induced shape change and respiratory burst. Dexamethasone promoted neutrophil survival at 21%, 10%, and 5% oxygen but not at 1% oxygen. Interestingly, GM-CSF and inflammatory CM increased neutrophil survival significantly, even at 1% oxygen, with cells remaining functionally active at 96 h. Dexamethasone was able to reduce the prosurvival effect of GM-CSF and inflammatory CM in a hypoxic environment. In conclusion, we found that GCs do not augment neutrophil survival in the presence of severe hypoxia or proinflammatory mediators. This suggests that GCs would not promote neutrophil survival at sites of inflammation under these conditions.
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Affiliation(s)
- John A Marwick
- 1.The Queen's Medical Research Institute, University of Edinburgh Medical School, 47 Little France Crescent, Edinburgh, EH16 4TJ, Scotland, UK.
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31
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Targeting neutrophil apoptosis for enhancing the resolution of inflammation. Cells 2013; 2:330-48. [PMID: 24709704 PMCID: PMC3972676 DOI: 10.3390/cells2020330] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 04/25/2013] [Accepted: 05/14/2013] [Indexed: 12/25/2022] Open
Abstract
Resolution of acute inflammation is an active process that requires inhibition of further leukocyte recruitment and removal of leukocytes from inflamed sites. Emigrated neutrophils undergo apoptosis before being removed by scavenger macrophages. Recent studies using a variety of gene knockout, transgenic and pharmacological strategies in diverse models of inflammation established neutrophil apoptosis as a critical control point in resolving inflammation. Analysis of death mechanisms revealed distinct features in executing the death program in neutrophils, which can be exploited as targets for controlling the lifespan of neutrophils. Indeed, anti-inflammatory and pro-resolution lipid mediators derived from essential fatty acids, such as lipoxin A4 and resolvin E1, autacoids and proteins, such as annexin A1 and TRAIL, and cyclin-dependent kinase inhibitors, can enhance the resolution of inflammation through induction of neutrophil apoptosis and promoting their removal by efferocytosis. In this review, we discuss recent advances in understanding the molecular basis of these actions, highlighting the potential of therapeutic induction of neutrophil apoptosis for dampening neutrophil-mediated tissue injury and inflammation underlying a variety of diseases.
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Resolution of inflammation: mechanisms and opportunity for drug development. Pharmacol Ther 2013; 139:189-212. [PMID: 23583354 DOI: 10.1016/j.pharmthera.2013.04.006] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 04/01/2013] [Indexed: 12/12/2022]
Abstract
Inflammation is a beneficial host reaction to tissue damage and has the essential primary purpose of restoring tissue homeostasis. Inflammation plays a major role in containing and resolving infection and may also occur under sterile conditions. The cardinal signs of inflammation dolor, calor, tumor and rubor are intrinsically associated with events including vasodilatation, edema and leukocyte trafficking into the site of inflammation. If uncontrolled or unresolved, inflammation itself can lead to further tissue damage and give rise to chronic inflammatory diseases and autoimmunity with eventual loss of organ function. It is now evident that the resolution of inflammation is an active continuous process that occurs during an acute inflammatory episode. Successful resolution requires activation of endogenous programs with switch from production of pro-inflammatory towards pro-resolving molecules, such as specific lipid mediators and annexin A1, and the non-phlogistic elimination of granulocytes by apoptosis with subsequent removal by surrounding macrophages. These processes ensure rapid restoration of tissue homeostasis. Here, we review recent advances in the understanding of resolution of inflammation, highlighting the pharmacological strategies that may interfere with the molecular pathways which control leukocyte survival and clearance. Such strategies have proved beneficial in several pre-clinical models of inflammatory diseases, suggesting that pharmacological modulation of the resolution process may be useful for the treatment of chronic inflammatory diseases in humans.
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El Kebir D, Filep JG. Modulation of Neutrophil Apoptosis and the Resolution of Inflammation through β2 Integrins. Front Immunol 2013; 4:60. [PMID: 23508943 PMCID: PMC3589696 DOI: 10.3389/fimmu.2013.00060] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 02/21/2013] [Indexed: 01/13/2023] Open
Abstract
Precise control of the neutrophil death program provides a balance between their defense functions and safe clearance, whereas impaired regulation of neutrophil death is thought to contribute to a wide range of inflammatory pathologies. Apoptosis is essential for neutrophil functional shutdown, removal of emigrated neutrophils, and timely resolution of inflammation. Neutrophils receive survival and pro-apoptosis cues from the inflammatory microenvironment and integrate these signals through surface receptors and common downstream mechanisms. Among these receptors are the leukocyte-specific membrane receptors β2 integrins that are best known for regulating adhesion and phagocytosis. Accumulating evidence indicate that outside-in signaling through the β2 integrin Mac-1 can generate contrasting cues in neutrophils, leading to promotion of their survival or apoptosis. Binding of Mac-1 to its ligands ICAM-1, fibrinogen, or the azurophilic granule enzyme myeloperoxidase suppresses apoptosis, whereas Mac-1-mediated phagocytosis of bacteria evokes apoptotic cell death. Mac-1 signaling is also target for the anti-inflammatory, pro-resolving mediators, including lipoxin A4, aspirin-triggered lipoxin A4, and resolvin E1. This review focuses on molecular mechanisms underlying Mac-1 regulation of neutrophil apoptosis and highlights recent advances how hierarchy of survival and pro-apoptosis signals can be harnessed to facilitate neutrophil apoptosis and the resolution of inflammation.
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Affiliation(s)
- Driss El Kebir
- Department of Pathology and Cell Biology, University of Montreal and Research Center, Maisonneuve-Rosemont Hospital Montreal, QC, Canada
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Steiger S, Harper JL. Neutrophil cannibalism triggers transforming growth factor β1 production and self regulation of neutrophil inflammatory function in monosodium urate monohydrate crystal-induced inflammation in mice. ACTA ACUST UNITED AC 2013; 65:815-23. [DOI: 10.1002/art.37822] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 12/04/2012] [Indexed: 01/16/2023]
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Phagocytosis is the main CR3-mediated function affected by the lupus-associated variant of CD11b in human myeloid cells. PLoS One 2013; 8:e57082. [PMID: 23451151 PMCID: PMC3579793 DOI: 10.1371/journal.pone.0057082] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 01/17/2013] [Indexed: 11/19/2022] Open
Abstract
The CD11b/CD18 integrin (complement receptor 3, CR3) is a surface receptor on monocytes, neutrophils, macrophages and dendritic cells that plays a crucial role in several immunological processes including leukocyte extravasation and phagocytosis. The minor allele of a non-synonymous CR3 polymorphism (rs1143679, conversation of arginine to histidine at position 77: R77H) represents one of the strongest genetic risk factor in human systemic lupus erythematosus, with heterozygosity (77R/H) being the most common disease associated genotype. Homozygosity for the 77H allele has been reported to reduce adhesion and phagocytosis in human monocytes and monocyte-derived macrophages, respectively, without affecting surface expression of CD11b. Herein we comprehensively assessed the influence of R77H on different CR3-mediated activities in monocytes, neutrophils, macrophages and dendritic cells. R77H did not alter surface expression of CD11b including its active form in any of these cell types. Using two different iC3b-coated targets we found that the uptake by heterozygous 77R/H macrophages, monocytes and neutrophils was significantly reduced compared to 77R/R cells. Allele-specific transduced immortalized macrophage cell lines demonstrated that the minor allele, 77H, was responsible for the impaired phagocytosis. R77H did not affect neutrophil adhesion, neutrophil transmigration in vivo or Toll-like receptor 7/8-mediated cytokine release by monocytes or dendritic cells with or without CR3 pre-engagement by iC3b-coated targets. Our findings demonstrate that the reduction in CR3-mediated phagocytosis associated with the 77H CD11b variant is not macrophage-restricted but demonstrable in other CR3-expressing professional phagocytic cells. The association between 77H and susceptibility to systemic lupus erythematosus most likely relates to impaired waste disposal, a key component of lupus pathogenesis.
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Lucas CD, Allen KC, Dorward DA, Hoodless LJ, Melrose LA, Marwick JA, Tucker CS, Haslett C, Duffin R, Rossi AG. Flavones induce neutrophil apoptosis by down-regulation of Mcl-1 via a proteasomal-dependent pathway. FASEB J 2012. [PMID: 23195034 PMCID: PMC3574292 DOI: 10.1096/fj.12-218990] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Neutrophil apoptosis and subsequent nonphlogistic clearance by surrounding phagocytes are key to the successful resolution of neutrophilic inflammation, with dysregulated apoptosis reported in multiple human inflammatory diseases. Enhancing neutrophil apoptosis has proresolution and anti-inflammatory effects in preclinical models of inflammation. Here we investigate the ability of the flavones apigenin, luteolin, and wogonin to induce neutrophil apoptosis in vitro and resolve neutrophilic inflammation in vivo. Human neutrophil apoptosis was assessed morphologically and by flow cytometry following incubation with apigenin, luteolin, and wogonin. All three flavones induced time- and concentration-dependent neutrophil apoptosis (apigenin, EC50=12.2 μM; luteolin, EC50=14.6 μM; and wogonin, EC50=28.9 μM). Induction of apoptosis was caspase dependent, as it was blocked by the broad-spectrum caspase inhibitor Q-VD-OPh and was associated with both caspase-3 and caspase-9 activation. Flavone-induced apoptosis was preceded by down-regulation of the prosurvival protein Mcl-1, with proteasomal inhibition preventing flavone-induced Mcl-1 down-regulation and apoptosis. The flavones abrogated the survival effects of mediators that prolong neutrophil life span, including lipoteichoic acid, peptidoglycan, dexamethasone, and granulocyte-macrophage colony stimulating factor, by driving apoptosis. Furthermore, wogonin enhanced resolution of established neutrophilic inflammation in a zebrafish model of sterile tissue injury. Wogonin-induced resolution was dependent on apoptosis in vivo as it was blocked by caspase inhibition. Our data show that the flavones induce neutrophil apoptosis and have potential as neutrophil apoptosis-inducing anti-inflammatory, proresolution agents.—Lucas, C. D., Allen, K. C., Dorward, D. A., Hoodless, L. J., Melrose, L. A., Marwick, J. A., Tucker, C. S., Haslett, C., Duffin, R., Rossi, A. G. Flavones induce neutrophil apoptosis by down-regulation of Mcl-1 via a proteasomal-dependent pathway.
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Affiliation(s)
- Christopher D Lucas
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh Medical School, 47 Little France Crescent, Edinburgh, Scotland, UK.
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Glycogen synthase kinase-3β inactivation is an intracellular marker and regulator for endotoxemic neutrophilia. J Mol Med (Berl) 2012; 91:207-17. [DOI: 10.1007/s00109-012-0944-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Revised: 07/27/2012] [Accepted: 08/06/2012] [Indexed: 12/28/2022]
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Al-Yacoub N, Fecker LF, Möbs M, Plötz M, Braun FK, Sterry W, Eberle J. Apoptosis induction by SAHA in cutaneous T-cell lymphoma cells is related to downregulation of c-FLIP and enhanced TRAIL signaling. J Invest Dermatol 2012; 132:2263-74. [PMID: 22551975 DOI: 10.1038/jid.2012.125] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Suberoylanilide hydroxamic acid (SAHA) has been approved for the treatment of cutaneous T-cell lymphoma (CTCL), but its mode of action remained largely elusive. As shown here in four CTCL cell lines, loss of cell viability correlated with significant time- and dose-dependent induction of apoptosis, whereas cytotoxicity was less pronounced. Both extrinsic and intrinsic apoptosis pathways were activated, as seen by processing of initiator caspases 8 and 9, loss of mitochondrial membrane potential, and cytochrome c release. Characteristically, antiapoptotic mediators such as Mcl-1, XIAP, survivin, and c-FLIP were downregulated. Consistent with its critical function, c-FLIP overexpression resulted in a significant decrease of SAHA-mediated apoptosis. Enhanced sensitivity to TRAIL (TNF-related apoptosis-inducing ligand) and enhanced TRAIL signaling was seen in CTCL cell lines with high sensitivity, whereas cell lines with moderate response were characterized by downregulation of TRAIL-R2 and weaker TRAIL expression. Comparable proapoptotic responses to SAHA and to the combination with TRAIL were seen in ex vivo tumor T cells of CTCL patients. Thus, activation of extrinsic apoptosis pathways, related to c-FLIP downregulation and enhanced TRAIL signaling, appeared as characteristic for CTCL cell responsiveness to SAHA. An improved understanding of the pathways may facilitate its targeted use and the selection of suitable combinations.
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Affiliation(s)
- Nadya Al-Yacoub
- Department of Dermatology and Allergy, Skin Cancer Center Charité (HTCC), Charité-University Medical Center Berlin, Berlin, Germany
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Milot E, Filep JG. Regulation of neutrophil survival/apoptosis by Mcl-1. ScientificWorldJournal 2011; 11:1948-62. [PMID: 22125448 PMCID: PMC3217587 DOI: 10.1100/2011/131539] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 10/11/2011] [Indexed: 12/14/2022] Open
Abstract
Neutrophil granulocytes have the shortest lifespan among leukocytes in the circulation and die via apoptosis. At sites of infection or tissue injury, prolongation of neutrophil lifespan is critical for effective host defense. Apoptosis of inflammatory neutrophils and their clearance are critical control points for termination of the inflammatory response. Evasion of neutrophil apoptosis aggravates local injury and leads to persistent tissue damage. The short-lived prosurvival Bcl-2 family protein, Mcl-1 (myeloid cell leukemia-1), is instrumental in controlling apoptosis and consequently neutrophil lifespan in response to rapidly changing environmental cues during inflammation. This paper will focus on multiple levels of control of Mcl-1 expression and function and will discuss targeting Mcl-1 as a potential therapeutic strategy to enhance the resolution of inflammation through accelerating neutrophil apoptosis.
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Affiliation(s)
- Eric Milot
- Department of Medicine, Research Center Maisonneuve-Rosemont Hospital, University of Montreal, 5415 Boulevard de l'Assomption, Montreal, QC, Canada H1T 2M4
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Alessandri AL, Duffin R, Leitch AE, Lucas CD, Sheldrake TA, Dorward DA, Hirani N, Pinho V, de Sousa LP, Teixeira MM, Lyons JF, Haslett C, Rossi AG. Induction of eosinophil apoptosis by the cyclin-dependent kinase inhibitor AT7519 promotes the resolution of eosinophil-dominant allergic inflammation. PLoS One 2011; 6:e25683. [PMID: 21984938 PMCID: PMC3184151 DOI: 10.1371/journal.pone.0025683] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 09/08/2011] [Indexed: 02/07/2023] Open
Abstract
Background Eosinophils not only defend the body against parasitic infection but are also involved in pathological inflammatory allergic diseases such as asthma, allergic rhinitis and contact dermatitis. Clearance of apoptotic eosinophils by macrophages is a key process responsible for driving the resolution of eosinophilic inflammation and can be defective in allergic diseases. However, enhanced resolution of eosinophilic inflammation by deliberate induction of eosinophil apoptosis using pharmacological agents has not been previously demonstrated. Here we investigated the effect of a novel cyclin-dependent kinase inhibitor drug, AT7519, on human and mouse eosinophil apoptosis and examined whether it could enhance the resolution of a murine model of eosinophil-dominant inflammation in vivo. Methodology/Principal Findings Eosinophils from blood of healthy donors were treated with AT7519 and apoptosis assessed morphologically and by flow-cytometric detection of annexin-V/propidium iodide staining. AT7519 induced eosinophil apoptosis in a concentration dependent manner. Therapeutic administration of AT7519 in eosinophil-dominant allergic inflammation was investigated using an established ovalbumin-sensitised mouse model of allergic pleurisy. Following ovalbumin challenge AT7519 was administered systemically at the peak of pleural inflammation and inflammatory cell infiltrate, apoptosis and evidence of macrophage phagocytosis of apoptotic eosinophils assessed at appropriate time points. Administration of AT7519 dramatically enhanced the resolution of allergic pleurisy via direct induction of eosinophil apoptosis without detriment to macrophage clearance of these cells. This enhanced resolution of inflammation was shown to be caspase-dependent as the effects of AT7519 were reduced by treatment with a broad spectrum caspase inhibitor (z-vad-fmk). Conclusions Our data show that AT7519 induces human eosinophil apoptosis and enhances the resolution of a murine model of allergic pleurisy by inducing caspase-dependent eosinophil apoptosis and enhancing macrophage ingestion of apoptotic eosinophils. These findings demonstrate the utility of cyclin-dependent kinase inhibitors such as AT7519 as potential therapeutic agents for the treatment of eosinophil dominant allergic disorders.
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Affiliation(s)
- Ana L. Alessandri
- Medical Research Council Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Rodger Duffin
- Medical Research Council Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, Scotland, United Kingdom
- * E-mail:
| | - Andrew E. Leitch
- Medical Research Council Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Christopher D. Lucas
- Medical Research Council Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Tara A. Sheldrake
- Medical Research Council Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - David A. Dorward
- Medical Research Council Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Nik Hirani
- Medical Research Council Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Vanessa Pinho
- Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Lirlândia Pires de Sousa
- Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mauro M. Teixeira
- Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - John F. Lyons
- Astex Therapeutics, Cambridge, England, United Kingdom
| | - Christopher Haslett
- Medical Research Council Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Adriano G. Rossi
- Medical Research Council Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, Scotland, United Kingdom
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Zmijewski JW, Bae HB, Deshane JS, Peterson CB, Chaplin DD, Abraham E. Inhibition of neutrophil apoptosis by PAI-1. Am J Physiol Lung Cell Mol Physiol 2011; 301:L247-54. [PMID: 21622848 DOI: 10.1152/ajplung.00075.2011] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Increased circulating and tissue levels of plasminogen activator inhibitor 1 (PAI-1) are often present in severe inflammatory states associated with neutrophil activation and accumulation and correlate with poor clinical outcome from many of these conditions. The mechanisms by which PAI-1 contributes to inflammation have not been fully delineated. In the present experiments, we found that addition of PAI-1 to neutrophil cultures diminished the rate of spontaneous and TNF-related apoptosis-inducing ligand-induced apoptotic cell death. The effects of PAI-1 on cell viability were associated with activation of antiapoptotic signaling pathways, including upregulation of PKB/Akt, Mcl-1, and Bcl-x(L). Although urokinase-plasminogen activator receptor, lipoprotein receptor-related protein, and vitronectin are primary ligands for PAI-1, these molecules were not involved in mediating its antiapoptotic properties. In contrast, blocking pertussis toxin-sensitive G protein-coupled receptors and selective inhibition of phosphatidylinositide 3-kinase reversed the ability of PAI-1 to extend neutrophil viability. The antiapoptotic effects of PAI-1 were also evident under in vivo conditions during LPS-induced acute lung injury, where enhanced apoptosis was present among neutrophils accumulating in the lungs of PAI-1(-/-) compared with PAI-1(+/+) mice. These results demonstrate a novel antiapoptotic role for PAI-1 that may contribute to its participation in neutrophil-associated inflammatory responses.
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Affiliation(s)
- Jaroslaw W Zmijewski
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294-0012, USA
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