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Bharatha M, Nandana MB, Praveen R, Nayaka S, Velmurugan D, Vishwanath BS, Rajaiah R. Unconjugated bilirubin and its derivative ameliorate IMQ-induced psoriasis-like skin inflammation in mice by inhibiting MMP9 and MAPK pathway. Int Immunopharmacol 2024; 130:111679. [PMID: 38377853 DOI: 10.1016/j.intimp.2024.111679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/02/2024] [Accepted: 02/08/2024] [Indexed: 02/22/2024]
Abstract
Psoriasis is a chronic immune-mediated inflammatory skin disease that involves dysregulated proliferation of keratinocytes. Psoriatic skin lesions are characterized by redness, thickness, and scaling. The interleukin axis of IL-23/IL-17 is critically involved in the development of human psoriasis. Imiquimod (IMQ), an agonist of TLR7 is known to induce psoriatic-like skin inflammation in mice. The topical application of IMQ induces systemic inflammation with increased proinflammatory cytokines in serum and secondary lymphoid organs. Further, matrix metalloproteases (MMPs) have been implicated in the pathophysiology of psoriatic-like skin inflammation. The increased MMP9 activity and gene expression of proinflammatory cytokines in IMQ-induced psoriatic skin is mediated by the activation of the MAPK pathway. Moreover, the increased expression of neutrophil-specific chemokines confirmed the infiltration of neutrophils at the site of psoriatic skin inflammation. In contrast, expression of IL-10, an anti-inflammatory cytokine gene expression is reduced in IMQ-treated mice skin. Topical application of unconjugated bilirubin (UCB) and its derivative dimethyl ester of bilirubin (BD1) on IMQ-induced psoriatic mice skin significantly mitigated the symptoms of psoriasis by inhibiting the activity of MMP9. Further, UCB and BD1 reduced neutrophil infiltration as evidenced by decreased myeloperoxidase (MPO) activity and reduced gene expression of proinflammatory cytokines, and neutrophil-specific chemokines. Apart from these modulations UCB and BD1 reduced MAPK phosphorylation and upregulated anti-inflammatory cytokines. To conclude, UCB and BD1 immunomodulated the psoriatic skin inflammation induced by IMQ in mice by inhibiting neutrophil mediated MMP9, decreased proinflammatory cytokines gene expression and modulating the MAPK pathway.
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Affiliation(s)
- Madeva Bharatha
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore, Karnataka 570006, India
| | - Manuganahalli B Nandana
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore, Karnataka 570006, India
| | - Raju Praveen
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore, Karnataka 570006, India
| | - Spandan Nayaka
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore, Karnataka 570006, India
| | - Devadasan Velmurugan
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603 203, India
| | - Bannikuppe S Vishwanath
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore, Karnataka 570006, India.
| | - Rajesh Rajaiah
- Department of Studies in Molecular Biology, University of Mysore, Manasagangotri, Mysore, Karnataka 570006, India.
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2
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Marandu TF, Dombek M, Gutknecht M, Griessl M, Riça IG, Vlková B, Macáková K, Panagioti E, Griffith A, Lederer J, Yaffe M, Shankar S, Otterbein L, Itagaki K, Hauser CJ, Cook CH. Cytomegalovirus durably primes neutrophil oxidative burst. J Leukoc Biol 2023; 114:459-474. [PMID: 37566762 DOI: 10.1093/jleuko/qiad091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 06/01/2023] [Accepted: 06/20/2023] [Indexed: 08/13/2023] Open
Abstract
Cytomegalovirus (CMV) is a ubiquitous herpes virus that infects most humans, thereafter persisting lifelong in tissues of the host. It is a known pathogen in immunosuppressed patients, but its impact on immunocompetent hosts remains less understood. Recent data have shown that CMV leaves a significant and long-lasting imprint in host immunity that may confer some protection against subsequent bacterial infection. Such innate immune activation may come at a cost, however, with potential to cause immunopathology. Neutrophils are central to many models of immunopathology, and while acute CMV infection is known to influence neutrophil biology, the impact of chronic CMV infection on neutrophil function remains unreported. Using our murine model of CMV infection and latency, we show that chronic CMV causes persistent enhancement of neutrophil oxidative burst well after resolution of acute infection. Moreover, this in vivo priming of marrow neutrophils is associated with enhanced formyl peptide receptor expression, and ultimately constitutive c-Jun N-terminal kinase phosphorylation and enhanced CD14 expression in/on circulating neutrophils. Finally, we show that neutrophil priming is dependent on viral load, suggesting that naturally infected human hosts will show variability in CMV-related neutrophil priming. Altogether, these findings represent a previously unrecognized and potentially important impact of chronic CMV infection on neutrophil responsiveness in immunocompetent hosts.
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Affiliation(s)
- Thomas F Marandu
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
- Department of Microbiology & Immunology, Mbeya College of Health and Allied Sciences, Hospital Hill Rd, University of Dar es Salaam, Mbeya 53107, Tanzania
| | - Michael Dombek
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
| | - Michael Gutknecht
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
| | - Marion Griessl
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
| | - Ingred Goretti Riça
- Department of Biology and Biological Engineering, and Center for Precision Cancer Medicine, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St, Cambridge, MA 02139, United States
| | - Barbora Vlková
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, 4 Sasinkova St, Bratislava 811 08, Slovakia
| | - Kristína Macáková
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, 4 Sasinkova St, Bratislava 811 08, Slovakia
| | - Eleni Panagioti
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
| | - Alec Griffith
- Department of Surgery, Brigham and Women's Hospital and Harvard Medical School, 75 Francis St., Boston, MA 02215, United States
| | - James Lederer
- Department of Surgery, Brigham and Women's Hospital and Harvard Medical School, 75 Francis St., Boston, MA 02215, United States
| | - Michael Yaffe
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
- Department of Biology and Biological Engineering, and Center for Precision Cancer Medicine, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St, Cambridge, MA 02139, United States
| | - Sidharth Shankar
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
| | - Leo Otterbein
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
| | - Kiyoshi Itagaki
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
| | - Carl J Hauser
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
| | - Charles H Cook
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis St., Boston, MA 02215, United States
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3
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Aanei CM, Devêvre E, Șerban A, Tavernier-Tardy E, Guyotat D, Campos Catafal L. High-Dimensional Mass Cytometry Analysis of Embryonic Antigens and Their Signaling Pathways in Myeloid Cells from Bone Marrow Aspirates in AML Patients at Diagnosis. Cancers (Basel) 2023; 15:4707. [PMID: 37835401 PMCID: PMC10571794 DOI: 10.3390/cancers15194707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 10/15/2023] Open
Abstract
BACKGROUND Embryonic antigens (EA) regulate pluripotency, self-renewal, and differentiation in embryonic stem (ES) cells during their development. In adult somatic cells, EA expression is normally inhibited; however, EAs can be re-expressed by cancer cells and are involved in the deregulation of different signaling pathways (SPs). In the context of AML, data concerning the expression of EAs are scarce and contradictory. METHODS We used mass cytometry to explore the expression of EAs and three SPs in myeloid cells from AML patients and normal bone marrow (NBM). Imaging flow cytometry was used for morphological assessment of cells in association with their OCT3/4 expression status (positive vs. negative). RESULTS An overall reduction in or absence of EA expression was observed in immature myeloid cells from AML patients compared to their normal counterparts. Stage-specific embryonic antigen-3 (SSEA-3) was consistently expressed at low levels in immature myeloid cells, whereas SSEA-1 was overexpressed in hematopoietic stem cells (HSCs) and myeloblasts from AML with monocytic differentiation (AML M4/M5). Therefore, these markers are valuable for distinguishing between normal and abnormal myeloid cells. These preliminary results show that the exploration of myeloid cell intracellular SPs in the setting of AML is very informative. Deregulation of three important leukemogenic SPs was also observed in myeloid cells from AML. CONCLUSIONS Exploring EAs and SPs in myeloid cells from AML patients by mass cytometry may help identify characteristic phenotypes and facilitate AML follow-up.
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Affiliation(s)
- Carmen-Mariana Aanei
- Laboratory of Hematology, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France; (A.Ș.); (L.C.C.)
- Santé Ingénierie Biologie Saint-Etienne, INSERM SainBiose U1059, 42270 Saint-Priest-en-Jarez, France
| | - Estelle Devêvre
- Plateau de Cytométrie AniRA, SFR BioSciences (UAR3444-US8), 69367 Lyon, France;
| | - Adrian Șerban
- Laboratory of Hematology, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France; (A.Ș.); (L.C.C.)
| | - Emmanuelle Tavernier-Tardy
- Department of Clinical Hematology, University Hospital of Saint-Etienne, 42100 Saint-Etienne, France; (E.T.-T.); (D.G.)
| | - Denis Guyotat
- Department of Clinical Hematology, University Hospital of Saint-Etienne, 42100 Saint-Etienne, France; (E.T.-T.); (D.G.)
| | - Lydia Campos Catafal
- Laboratory of Hematology, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France; (A.Ș.); (L.C.C.)
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Futosi K, Németh T, Horváth ÁI, Abram CL, Tusnády S, Lowell CA, Helyes Z, Mócsai A. Myeloid Src-family kinases are critical for neutrophil-mediated autoinflammation in gout and motheaten models. J Exp Med 2023; 220:e20221010. [PMID: 37074415 PMCID: PMC10120404 DOI: 10.1084/jem.20221010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 01/27/2023] [Accepted: 03/28/2023] [Indexed: 04/20/2023] Open
Abstract
Autoinflammatory diseases include a number of monogenic systemic inflammatory diseases, as well as acquired autoinflammatory diseases such as gout. Here, we show that the myeloid Src-family kinases Hck, Fgr, and Lyn are critical for experimental models of gout, as well as for genetically determined systemic inflammation in the Ptpn6me-v/me-v (motheaten viable) mouse model. The Hck-/-Fgr-/-Lyn-/- mutation abrogated various monosodium urate (MSU) crystal-induced pro-inflammatory responses of neutrophils, and protected mice from the development of gouty arthritis. The Src-family inhibitor dasatinib abrogated MSU crystal-induced responses of human neutrophils and reduced experimental gouty arthritis in mice. The Hck-/-Fgr-/-Lyn-/- mutation also abrogated spontaneous inflammation and prolonged the survival of the Ptpn6me-v/me-v mice. Spontaneous adhesion and superoxide release of Ptpn6me-v/me-v neutrophils were also abolished by the Hck-/-Fgr-/-Lyn-/- mutation. Excessive activation of tyrosine phosphorylation pathways in myeloid cells may characterize a subset of autoinflammatory diseases.
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Affiliation(s)
- Krisztina Futosi
- Department of Physiology, School of Medicine, Semmelweis University, Budapest, Hungary
- ELKH-SE Inflammation Physiology Research Group, Eötvös Loránd Research Network and Semmelweis University, Budapest, Hungary
| | - Tamás Németh
- Department of Physiology, School of Medicine, Semmelweis University, Budapest, Hungary
- MTA-SE “Lendület” Translational Rheumatology Research Group, Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
- Department of Rheumatology and Clinical Immunology, Semmelweis University, Budapest, Hungary
- Department of Internal Medicine and Oncology, Semmelweis University, Budapest, Hungary
| | - Ádám I. Horváth
- Department of Pharmacology and Pharmacotherapy, Medical School and János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Clare L. Abram
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Simon Tusnády
- Department of Physiology, School of Medicine, Semmelweis University, Budapest, Hungary
| | - Clifford A. Lowell
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School and János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Pécs, Hungary
- PharmInVivo Ltd., Pécs, Hungary
| | - Attila Mócsai
- Department of Physiology, School of Medicine, Semmelweis University, Budapest, Hungary
- ELKH-SE Inflammation Physiology Research Group, Eötvös Loránd Research Network and Semmelweis University, Budapest, Hungary
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5
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Wang SW, Zhang Q, Lu D, Fang YC, Yan XC, Chen J, Xia ZK, Yuan QT, Chen LH, Zhang YM, Nan FJ, Xie X. GPR84 regulates pulmonary inflammation by modulating neutrophil functions. Acta Pharmacol Sin 2023:10.1038/s41401-023-01080-z. [PMID: 37016043 PMCID: PMC10072043 DOI: 10.1038/s41401-023-01080-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 03/14/2023] [Indexed: 04/06/2023] Open
Abstract
Acute lung injury (ALI) is an acute, progressive hypoxic respiratory failure that could develop into acute respiratory distress syndrome (ARDS) with very high mortality rate. ALI is believed to be caused by uncontrolled inflammation, and multiple types of immune cells, especially neutrophils, are critically involved in the development of ALI. The treatment for ALI/ARDS is very limited, a better understanding of the pathogenesis and new therapies are urgently needed. Here we discover that GPR84, a medium chain fatty acid receptor, plays critical roles in ALI development by regulating neutrophil functions. GPR84 is highly upregulated in the cells isolated from the bronchoalveolar lavage fluid of LPS-induced ALI mice. GPR84 deficiency or blockage significantly ameliorated ALI mice lung inflammation by reducing neutrophils infiltration and oxidative stress. Further studies reveal that activation of GPR84 strongly induced reactive oxygen species production from neutrophils by stimulating Lyn, AKT and ERK1/2 activation and the assembly of the NADPH oxidase. These results reveal an important role of GPR84 in neutrophil functions and lung inflammation and strongly suggest that GPR84 is a potential drug target for ALI.
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Affiliation(s)
- Si-Wei Wang
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qing Zhang
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
- Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, 264117, China
| | - Dan Lu
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - You-Chen Fang
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Xiao-Ci Yan
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Jing Chen
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhi-Kan Xia
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qian-Ting Yuan
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Lin-Hai Chen
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | | | - Fa-Jun Nan
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
- Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, 264117, China
| | - Xin Xie
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China.
- Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, 264117, China.
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
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Xie Y, Fontenot L, Estrada AC, Nelson B, Bullock A, Faull KF, Feng H, Sun M, Koon HW. Genistein Inhibits Clostridioides difficile Infection via Estrogen Receptors and Lysine-Deficient Protein Kinase 1. J Infect Dis 2023; 227:806-819. [PMID: 36628948 PMCID: PMC10226758 DOI: 10.1093/infdis/jiad008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/29/2022] [Accepted: 01/09/2023] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Clostridioides difficile infection (CDI) is a debilitating nosocomial disease. Postmenopausal women may have an increased risk of CDI, suggesting estrogen influence. Soybean products contain a representative estrogenic isoflavone, genistein. METHODS The anti-inflammatory and antiapoptotic effects of genistein were determined using primary human cells and fresh colonic tissues. The effects of oral genistein therapy among mice and hamsters were evaluated. RESULTS Within 10 days of CDI, female c57BL/6J mice in a standard environment (regular diet) had a 50% survival rate, while those with estrogen depletion and in an isoflavone-free environment (soy-free diet) had a 25% survival rate. Oral genistein improved their 10-day survival rate to 100% on a regular diet and 75% in an isoflavone-free environment. Genistein reduced macrophage inflammatory protein-1α (MIP-1α) secretion in fresh human colonic tissues exposed to toxins. Genistein inhibited MIP-1α secretion in primary human peripheral blood mononuclear cells, abolished apoptosis and BCL-2-associated X (BAX) expression in human colonic epithelial cells, and activated lysine-deficient protein kinase 1 (WNK1) phosphorylation in both cell types. The anti-inflammatory and antiapoptotic effects of genistein were abolished by inhibiting estrogen receptors and WNK1. CONCLUSIONS Genistein reduces CDI disease activity by inhibiting proinflammatory cytokine expression and apoptosis via the estrogen receptor/G-protein estrogen receptor/WNK1 pathways.
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Affiliation(s)
- Ying Xie
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, USA
- Department of Gastroenterology, The First Hospital of China Medical University, Shenyang City, Liaoning Province, China
| | - Lindsey Fontenot
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, USA
| | - Andrea Chupina Estrada
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, USA
| | - Becca Nelson
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, USA
| | - Ashlen Bullock
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, USA
| | - Kym F Faull
- Pasarow Mass Spectrometry Laboratory, Jane and Terry Semel Institute for Neuroscience and Human Behavior, Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, USA
| | - Hanping Feng
- Department of Microbial Pathogenesis, School of Dentistry, University of Maryland, Maryland, Baltimore, USA
| | - Mingjun Sun
- Department of Gastroenterology, The First Hospital of China Medical University, Shenyang City, Liaoning Province, China
| | - Hon Wai Koon
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, USA
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2-Hexadecenal Regulates ROS Production and Induces Apoptosis in Polymorphonuclear Leucocytes. Cell Biochem Biophys 2023; 81:77-86. [PMID: 36418741 DOI: 10.1007/s12013-022-01117-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 10/30/2022] [Indexed: 11/27/2022]
Abstract
2-Hexadecenal (2-HD)-a biologically active long-chain fatty aldehyde formed in organism enzymatically or nonenzymatically in the reaction of free-radical destruction of sphingolipids under the action of hypochlorous acid, producing by myeloperoxidase. This research aimed to study 2-HD effects on polymorphonuclear leukocytes' (PMNLs) functions. It has been shown that at submicromolar concentrations, 2-HD causes an elevation in ROS production by PMNLs. It has been found that such effect is associated with signal transduction pathways modification and expressed in elevation of NADPH oxidase, MPO, and JNK-MAPK contributions to this process. At higher concentrations, 2-HD induces apoptosis, which correlates with a significant increase in free Ca2+ in the cytoplasm, a decrease in ROS production, and a decline in mitochondrial potential. Both of these processes are accompanied by cytoskeleton reorganization.
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8
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Panasenko OM, Ivanov VA, Mikhalchik EV, Gorudko IV, Grigorieva DV, Basyreva LY, Shmeleva EV, Gusev SA, Kostevich VA, Gorbunov NP, Sokolov AV. Methylglyoxal-Modified Human Serum Albumin Binds to Leukocyte Myeloperoxidase and Inhibits its Enzymatic Activity. Antioxidants (Basel) 2022; 11:2263. [PMID: 36421449 PMCID: PMC9686918 DOI: 10.3390/antiox11112263] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/01/2022] [Accepted: 11/10/2022] [Indexed: 11/15/2023] Open
Abstract
Hyperglycemia in diabetes mellitus induces modification of proteins by glucose and its derivative methylglyoxal (MG). Neutrophils perform their bactericidal activity mainly via reactive halogen (RHS) and oxygen (ROS) species generation catalyzed by myeloperoxidase (MPO) stored in neutrophil azurophilic granules (AGs) and membrane NADPH oxidase, respectively. Herein, we study the binding of human serum albumin (HSA) modified with MG (HSA-MG) to MPO and its effects on MPO activity and release by neutrophils. Peroxidase activity of MPO was registered by oxidation of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt, and chlorinating activity by decolorization of Celestine blue B dye. Binding of HSA-MG to MPO was studied by affinity chromatography, disc-electrophoresis, ligand Western blotting and enzyme-linked solid phase immunoassay using monoclonal antibodies (mAbs) to MPO. ROS and RHS generation were detected by lucigenin (Luc) and luminol (Lum) chemiluminescence (CL), respectively. Neutrophil degranulation was assessed by flow cytometry using fluorescent labeled antibodies to the marker proteins CD63 from AGs and CD11b from peroxidase-negative granules (PNGs). NETosis was assayed by quantifying DNA network-like structures (NET-like structures) in blood smears stained by Romanowsky. HSA-MG bound to MPO, giving a stable complex (Kd = 1.5 nM) and competing with mAbs, and non-competitively inhibited peroxidase and chlorinating MPO activity and induced degranulation of PNGs but not of AGs. HSA-MG enhanced Luc-CL per se or following PMA, unlike Lum-CL, and did not affect spontaneous or PMA-stimulated NETosis. Thus, HSA modified under hyperglycemia-like conditions stimulated NADPH oxidase of neutrophils but dampened their functions dependent on activity of MPO, with no effect on its release via degranulation or NETosis. This phenomenon could underlie the downregulation of bactericidal activity of MPO and neutrophils, and hence of innate immunity, giving rise to wound healing impairment and susceptibility to infection in patients with hyperglycemia.
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Affiliation(s)
- Oleg M. Panasenko
- Department of Biophysics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
- Department of Medical Biophysics of the Institute for Translative Medicine, Pirogov Russian National Research Medical University, Moscow 117997, Russia
| | - Viktor A. Ivanov
- Department of Biophysics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Elena V. Mikhalchik
- Department of Biophysics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Irina V. Gorudko
- Department of Biophysics, Belarusian State University, 220030 Minsk, Belarus
| | - Daria V. Grigorieva
- Department of Biophysics, Belarusian State University, 220030 Minsk, Belarus
| | - Liliya Yu. Basyreva
- Department of Biophysics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Ekaterina V. Shmeleva
- Department of Biophysics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Sergey A. Gusev
- Department of Biophysics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Valeria A. Kostevich
- Department of Biophysics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
- Department of Molecular Genetics, Institute of Experimental Medicine, St. Petersburg 197376, Russia
| | - Nikolay P. Gorbunov
- Department of Biophysics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
- Department of Molecular Genetics, Institute of Experimental Medicine, St. Petersburg 197376, Russia
| | - Alexey V. Sokolov
- Department of Biophysics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
- Department of Molecular Genetics, Institute of Experimental Medicine, St. Petersburg 197376, Russia
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Delobel P, Ginter B, Rubio E, Balabanian K, Lazennec G. CXCR2 intrinsically drives the maturation and function of neutrophils in mice. Front Immunol 2022; 13:1005551. [PMID: 36311783 PMCID: PMC9606682 DOI: 10.3389/fimmu.2022.1005551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/23/2022] [Indexed: 11/13/2022] Open
Abstract
Neutrophils play a major role in the protection from infections but also in inflammation related to tumor microenvironment. However, cell-extrinsic and -intrinsic cues driving their function at steady state is still fragmentary. Using Cxcr2 knock-out mice, we have evaluated the function of the chemokine receptor Cxcr2 in neutrophil physiology. We show here that Cxcr2 deficiency decreases the percentage of mature neutrophils in the spleen, but not in the bone marrow (BM). There is also an increase of aged CD62Llo CXCR4hi neutrophils in the spleen of KO animals. Spleen Cxcr2-/- neutrophils display a reduced phagocytic ability, whereas BM neutrophils show an enhanced phagocytic ability compared to WT neutrophils. Spleen Cxcr2-/- neutrophils show reduced reactive oxygen species production, F-actin and α-tubulin levels. Moreover, spleen Cxcr2-/- neutrophils display an altered signaling with reduced phosphorylation of ERK1/2 and p38 MAPK, impaired PI3K-AKT, NF-κB, TGFβ and IFNγ pathways. Altogether, these results suggest that Cxcr2 is essential for neutrophil physiology.
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Affiliation(s)
- Pauline Delobel
- CNRS, UMR9005, Sys2Diag-ALCEN, Cap delta, Montpellier, France
| | - Benjamin Ginter
- CNRS, UMR9005, Sys2Diag-ALCEN, Cap delta, Montpellier, France
| | - Eliane Rubio
- CNRS, UMR9005, Sys2Diag-ALCEN, Cap delta, Montpellier, France
| | - Karl Balabanian
- CNRS, GDR 3697 “Microenvironment of tumor niches”, Micronit, France
- Université Paris-Cité, Institut de Recherche Saint-Louis, INSERM U1160, Paris, France
| | - Gwendal Lazennec
- CNRS, UMR9005, Sys2Diag-ALCEN, Cap delta, Montpellier, France
- CNRS, GDR 3697 “Microenvironment of tumor niches”, Micronit, France
- *Correspondence: Gwendal Lazennec,
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10
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Dib K, El Banna A, Radulescu C, Lopez Campos G, Sheehan G, Kavanagh K. Histamine Produced by Gram-Negative Bacteria Impairs Neutrophil's Antimicrobial Response by Engaging the Histamine 2 Receptor. J Innate Immun 2022; 15:153-173. [PMID: 35858582 PMCID: PMC10643892 DOI: 10.1159/000525536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 06/12/2022] [Indexed: 11/19/2022] Open
Abstract
We found that histamine (10-9 M) did not have any effect on the in vitro capture of Escherichia coli by neutrophils but accelerated its intracellular killing. In contrast, histamine (10-6 M) delayed the capture of Escherichia coli by neutrophils and reduced the amounts of pHrodo zymosan particles inside acidic mature phagosomes. Histamine acted through the H4R and the H2R, which are coupled to the Src family tyrosine kinases or the cAMP/protein kinase A pathway, respectively. The protein kinase A inhibitor H-89 abrogated the delay in bacterial capture induced by histamine (10-6 M) and the Src family tyrosine kinase inhibitor PP2 blocked histamine (10-9 M) induced acceleration of bacterial intracellular killing and tyrosine phosphorylation of proteins. To investigate the role of histamine in pathogenicity, we designed an Acinetobacter baumannii strain deficient in histamine production (hdc::TOPO). Galleria mellonella larvae inoculated with the wild-type Acinetobacter baumannii ATCC 17978 strain (1.1 × 105 CFU) died rapidly (100% death within 40 h) but not when inoculated with the Acinetobacter baumannii hdc::TOPO mutant (10% mortality). The concentration of histamine rose in the larval haemolymph upon inoculation of the wild type but not the Acinetobacter baumannii hdc::TOPO mutant, such concentration of histamine blocks the ability of hemocytes from Galleria mellonella to capture Candida albicans in vitro. Thus, bacteria-producing histamine, by maintaining high levels of histamine, may impair neutrophil phagocytosis by hijacking the H2R.
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Affiliation(s)
- Karim Dib
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Amal El Banna
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Clara Radulescu
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Guillermo Lopez Campos
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Gerard Sheehan
- Department of Biology, Maynooth University, Maynooth, Ireland
| | - Kevin Kavanagh
- Department of Biology, Maynooth University, Maynooth, Ireland
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11
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Liao HR, Kao YY, Leu YL, Liu FC, Tseng CP. Larixol inhibits fMLP-induced superoxide anion production and chemotaxis by targeting the βγ subunit of Gi-protein of fMLP receptor in human neutrophils. Biochem Pharmacol 2022; 201:115091. [DOI: 10.1016/j.bcp.2022.115091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/04/2022] [Accepted: 05/06/2022] [Indexed: 11/24/2022]
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12
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de Freitas Junior RA, Lossavaro PKDMB, Kassuya CAL, Paredes-Gamero EJ, Farias Júnior NC, Souza MIL, Silva-Comar FMDS, Cuman RKN, Silva DB, Toffoli-Kadri MC, Silva-Filho SE. Effect of Ylang-Ylang ( Cananga odorata Hook. F. & Thomson) Essential Oil on Acute Inflammatory Response In Vitro and In Vivo. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123666. [PMID: 35744789 PMCID: PMC9231162 DOI: 10.3390/molecules27123666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 05/05/2022] [Accepted: 05/16/2022] [Indexed: 11/16/2022]
Abstract
The aim of this study is to evaluate the phytochemical profile, oral acute toxicity, and the effect of ylang-ylang (Cananga odorata Hook. F. & Thomson) essential oil (YEO) on acute inflammation. YEO was analyzed by gas chromatography/mass spectrometry. For in vitro tests, YEO was assessed using cytotoxicity, neutrophil chemotaxis induced by N-formyl methionyl leucyl phenylalanine (fMLP), and phagocytic activity tests. YEO was orally administered in zymosan-induced peritonitis, carrageenan-induced leukocyte rolling, and adhesion events in the in situ microcirculation model and in carrageenan-induced paw edema models. YEO (2000 mg/kg) was also tested using an acute toxicity test in Swiss mice. YEO showed a predominance of benzyl acetate, linalool, benzyl benzoate, and methyl benzoate. YEO did not present in vitro cytotoxicity. YEO reduced the in vitro neutrophil chemotaxis induced by fMLP and reduced the phagocytic activity. The oral treatment with YEO reduced the leukocyte recruitment and nitric oxide production in the zymosan-induced peritonitis model, reduced rolling and adherent leukocyte number induced by carrageenan in the in situ microcirculation model, and reduced carrageenan-induced edema and mechanical hyperalgesia. YEO did not present signs of toxicity in the acute toxicity test. In conclusion, YEO affected the leukocyte activation, and presented antiedematogenic, anti-hyperalgesic, and anti-inflammatory properties.
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Affiliation(s)
- Robson Araújo de Freitas Junior
- Pharmaceutical Sciences, Food and Nutrition College, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (R.A.d.F.J.); (P.K.d.M.B.L.); (E.J.P.-G.); (D.B.S.); (M.C.T.-K.)
| | - Paloma Kênia de Moraes Berenguel Lossavaro
- Pharmaceutical Sciences, Food and Nutrition College, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (R.A.d.F.J.); (P.K.d.M.B.L.); (E.J.P.-G.); (D.B.S.); (M.C.T.-K.)
| | | | - Edgar Julian Paredes-Gamero
- Pharmaceutical Sciences, Food and Nutrition College, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (R.A.d.F.J.); (P.K.d.M.B.L.); (E.J.P.-G.); (D.B.S.); (M.C.T.-K.)
| | | | - Maria Inês Lenz Souza
- Biosciences Institute, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
| | | | - Roberto Kenji Nakamura Cuman
- Department of Pharmacology and Therapeutics, State University of Maringá, Maringá 87020-900, Brazil; (F.M.d.S.S.-C.); (R.K.N.C.)
| | - Denise Brentan Silva
- Pharmaceutical Sciences, Food and Nutrition College, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (R.A.d.F.J.); (P.K.d.M.B.L.); (E.J.P.-G.); (D.B.S.); (M.C.T.-K.)
| | - Mônica Cristina Toffoli-Kadri
- Pharmaceutical Sciences, Food and Nutrition College, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (R.A.d.F.J.); (P.K.d.M.B.L.); (E.J.P.-G.); (D.B.S.); (M.C.T.-K.)
| | - Saulo Euclides Silva-Filho
- Pharmaceutical Sciences, Food and Nutrition College, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (R.A.d.F.J.); (P.K.d.M.B.L.); (E.J.P.-G.); (D.B.S.); (M.C.T.-K.)
- Correspondence:
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13
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Myeloid-Specific Pyruvate-Kinase-Type-M2-Deficient Mice Are Resistant to Acute Lung Injury. Biomedicines 2022; 10:biomedicines10051193. [PMID: 35625931 PMCID: PMC9138865 DOI: 10.3390/biomedicines10051193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 05/17/2022] [Accepted: 05/19/2022] [Indexed: 02/05/2023] Open
Abstract
Infiltration of polymorphonuclear neutrophils (PMNs) plays a central role in acute lung injury (ALI). The mechanisms governing PMN inflammatory responses, however, remain incompletely understood. Based on our recent study showing a non-metabolic role of pyruvate kinase type M2 (PKM2) in controlling PMN degranulation of secondary and tertiary granules and consequent chemotaxis, here we tested a hypothesis that Pkm2-deficient mice may resist ALI due to impaired PMN inflammatory responses. We found that PMN aerobic glycolysis controlled the degranulation of secondary and tertiary granules induced by fMLP and PMA. Compared to WT PMNs, Pkm2-deficient (Pkm2-/-) PMNs displayed significantly less capacity for fMLP- or PMA-induced degranulation of secondary and tertiary granules, ROS production, and transfilter migration. In line with this, myeloid-specific Pkm2-/- mice exhibited impaired zymosan-induced PMN infiltration in the peritoneal cavity. Employing an LPS-induced ALI mouse model, LPS-treated Pkm2-/- mice displayed significantly less infiltration of inflammatory PMNs in the alveolar space and a strong resistance to LPS-induced ALI. Our results thus reveal that PKM2 is required for PMN inflammatory responses and deletion of PKM2 in PMN leads to an impaired PMN function but protection against LPS-induced ALI.
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14
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Gonzalez CG, Mills RH, Kordahi MC, Carrillo-Terrazas M, Secaira-Morocho H, Widjaja CE, Tsai MS, Mittal Y, Yee BA, Vargas F, Weldon K, Gauglitz JM, Delaroque C, Sauceda C, Rossitto LA, Ackermann G, Humphrey G, Swafford AD, Siegel CA, Buckey JC, Raffals LE, Sadler C, Lindholm P, Fisch KM, Valaseck M, Suriawinata A, Yeo GW, Ghosh P, Chang JT, Chu H, Dorrestein P, Zhu Q, Chassaing B, Knight R, Gonzalez DJ, Dulai PS. The Host-Microbiome Response to Hyperbaric Oxygen Therapy in Ulcerative Colitis Patients. Cell Mol Gastroenterol Hepatol 2022; 14:35-53. [PMID: 35378331 PMCID: PMC9117812 DOI: 10.1016/j.jcmgh.2022.03.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Hyperbaric oxygen therapy (HBOT) is a promising treatment for moderate-to-severe ulcerative colitis. However, our current understanding of the host and microbial response to HBOT remains unclear. This study examined the molecular mechanisms underpinning HBOT using a multi-omic strategy. METHODS Pre- and post-intervention mucosal biopsies, tissue, and fecal samples were collected from HBOT phase 2 clinical trials. Biopsies and fecal samples were subjected to shotgun metaproteomics, metabolomics, 16s rRNA sequencing, and metagenomics. Tissue was subjected to bulk RNA sequencing and digital spatial profiling (DSP) for single-cell RNA and protein analysis, and immunohistochemistry was performed. Fecal samples were also used for colonization experiments in IL10-/- germ-free UC mouse models. RESULTS Proteomics identified negative associations between HBOT response and neutrophil azurophilic granule abundance. DSP identified an HBOT-specific reduction of neutrophil STAT3, which was confirmed by immunohistochemistry. HBOT decreased microbial diversity with a proportional increase in Firmicutes and a secondary bile acid lithocholic acid. A major source of the reduction in diversity was the loss of mucus-adherent taxa, resulting in increased MUC2 levels post-HBOT. Targeted database searching revealed strain-level associations between Akkermansia muciniphila and HBOT response status. Colonization of IL10-/- with stool obtained from HBOT responders resulted in lower colitis activity compared with non-responders, with no differences in STAT3 expression, suggesting complementary but independent host and microbial responses. CONCLUSIONS HBOT reduces host neutrophil STAT3 and azurophilic granule activity in UC patients and changes in microbial composition and metabolism in ways that improve colitis activity. Intestinal microbiota, especially strain level variations in A muciniphila, may contribute to HBOT non-response.
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Key Words
- bclxl, b-cell lymphoma-extra large
- bim, bcl-2 interacting protein
- dsp, digital spatial profiling
- fdr, false discovery rate
- hbot, hyperbaric oxygen therapy
- hif, hypoxia inducible factor
- il, interleukin
- lca, lithocholic acid
- mapk, mitogen-activated protein kinase
- ms, mass spectrometry
- nlrp3, nod-, lrr- and pyrin domain-containing protein 3
- roi, regions of interest
- ros, reactive oxygen species
- stat3, signal transducer and activator of transcription 3
- tmt, tandem mass tag
- uc, ulcerative colitis
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Affiliation(s)
- Carlos G Gonzalez
- Department of Pharmacology, University of California, San Diego, California; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California; Department of Pediatrics, University of California, San Diego, California
| | - Robert H Mills
- Department of Pharmacology, University of California, San Diego, California; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California; Department of Pediatrics, University of California, San Diego, California
| | - Melissa C Kordahi
- INSERM U1016, team "Mucosal microbiota in chronic inflammatory diseases", CNRS UMR 8104, Université de Paris, Paris, France
| | - Marvic Carrillo-Terrazas
- Department of Pharmacology, University of California, San Diego, California; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California
| | - Henry Secaira-Morocho
- School of Life Sciences, Arizona State University, Tempe, Arizona; Biodesign Center for Fundamental and Applied Microbiomics, Arizona State University, Tempe, Arizona
| | - Christella E Widjaja
- Division of Gastroenterology, University of California San Diego, San Diego, California
| | - Matthew S Tsai
- Division of Gastroenterology, University of California San Diego, San Diego, California
| | - Yash Mittal
- Division of Gastroenterology, University of California San Diego, San Diego, California
| | - Brian A Yee
- Department of Cellular and Molecular Medicine, University of California San Diego, San Diego, California; Institute for Genomic Medicine, University of California San Diego, San Diego, California
| | - Fernando Vargas
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California
| | - Kelly Weldon
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California; Department of Computer Science and Engineering, University of California San Diego, San Diego, California
| | - Julia M Gauglitz
- Department of Pediatrics, University of California, San Diego, California
| | - Clara Delaroque
- INSERM U1016, team "Mucosal microbiota in chronic inflammatory diseases", CNRS UMR 8104, Université de Paris, Paris, France
| | - Consuelo Sauceda
- Department of Pharmacology, University of California, San Diego, California
| | - Leigh-Ana Rossitto
- Department of Pharmacology, University of California, San Diego, California
| | - Gail Ackermann
- Department of Pediatrics, University of California, San Diego, California
| | - Gregory Humphrey
- Department of Pediatrics, University of California, San Diego, California
| | - Austin D Swafford
- Department of Computer Science and Engineering, University of California San Diego, San Diego, California
| | - Corey A Siegel
- Section of Gastroenterology and Hepatology, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Jay C Buckey
- Center for Hyperbaric Medicine, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Laura E Raffals
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Charlotte Sadler
- Division of Hyperbaric Medicine, Department of Emergency Medicine, University of California San Diego, San Diego, California
| | - Peter Lindholm
- Division of Hyperbaric Medicine, Department of Emergency Medicine, University of California San Diego, San Diego, California
| | - Kathleen M Fisch
- Center for Computational Biology and Bioinformatics, University of California San Diego, San Diego, California
| | - Mark Valaseck
- Department of Pathology, University of California San Diego, San Diego, California
| | - Arief Suriawinata
- Section of Gastroenterology and Hepatology, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Gene W Yeo
- Department of Cellular and Molecular Medicine, University of California San Diego, San Diego, California; Institute for Genomic Medicine, University of California San Diego, San Diego, California
| | - Pradipta Ghosh
- Division of Gastroenterology, University of California San Diego, San Diego, California; Department of Cellular and Molecular Medicine, University of California San Diego, San Diego, California
| | - John T Chang
- Division of Gastroenterology, University of California San Diego, San Diego, California
| | - Hiutung Chu
- Department of Pathology, University of California San Diego, San Diego, California; Center for Microbiome Innovation, University of California San Diego, San Diego, California; Chiba University-UC San Diego Center for Mucosal Immunology, Allergy and Vaccines (cMAV), University of California, San Diego, La Jolla, California
| | - Pieter Dorrestein
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California; Department of Pediatrics, University of California, San Diego, California; Center for Microbiome Innovation, University of California San Diego, San Diego, California
| | - Qiyun Zhu
- School of Life Sciences, Arizona State University, Tempe, Arizona; Biodesign Center for Fundamental and Applied Microbiomics, Arizona State University, Tempe, Arizona
| | - Benoit Chassaing
- INSERM U1016, team "Mucosal microbiota in chronic inflammatory diseases", CNRS UMR 8104, Université de Paris, Paris, France
| | - Rob Knight
- Department of Computer Science and Engineering, University of California San Diego, San Diego, California; Department of Pediatrics, University of California, San Diego, California; Center for Microbiome Innovation, University of California San Diego, San Diego, California
| | - David J Gonzalez
- Department of Pharmacology, University of California, San Diego, California; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California; Center for Microbiome Innovation, University of California San Diego, San Diego, California
| | - Parambir S Dulai
- Division of Gastroenterology, University of California San Diego, San Diego, California; Division of Gastroenterology, Northwestern University, Chicago, Illinois.
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15
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Inhibition of transcription factor NFAT activity in activated platelets enhances their aggregation and exacerbates gram-negative bacterial septicemia. Immunity 2021; 55:224-236.e5. [PMID: 34995475 DOI: 10.1016/j.immuni.2021.12.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 09/09/2021] [Accepted: 12/03/2021] [Indexed: 12/25/2022]
Abstract
During gram-negative septicemia, interactions between platelets and neutrophils initiate a detrimental feedback loop that sustains neutrophil extracellular trap (NET) induction, disseminated intravascular coagulation, and inflammation. Understanding intracellular pathways that control platelet-neutrophil interactions is essential for identifying new therapeutic targets. Here, we found that thrombin signaling induced activation of the transcription factor NFAT in platelets. Using genetic and pharmacologic approaches, as well as iNFATuation, a newly developed mouse model in which NFAT activation can be abrogated in a cell-specific manner, we demonstrated that NFAT inhibition in activated murine and human platelets enhanced their activation and aggregation, as well as their interactions with neutrophils and NET induction. During gram-negative septicemia, NFAT inhibition in platelets promoted disease severity by increasing disseminated coagulation and NETosis. NFAT inhibition also partially restored coagulation ex vivo in patients with hypoactive platelets. Our results define non-transcriptional roles for NFAT that could be harnessed to address pressing clinical needs.
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16
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Hawkins P, McEnery T, Gabillard-Lefort C, Bergin DA, Alfawaz B, Shutchaidat V, Meleady P, Henry M, Coleman O, Murphy M, McElvaney NG, Reeves EP. In vitro and in vivo modulation of NADPH oxidase activity and reactive oxygen species production in human neutrophils by α 1-antitrypsin. ERJ Open Res 2021; 7:00234-2021. [PMID: 34881324 PMCID: PMC8645872 DOI: 10.1183/23120541.00234-2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 08/29/2021] [Indexed: 12/17/2022] Open
Abstract
Oxidative stress from innate immune cells is a driving mechanism that underlies COPD pathogenesis. Individuals with α-1 antitrypsin (AAT) deficiency (AATD) have a dramatically increased risk of developing COPD. To understand this further, the aim of this study was to investigate whether AATD presents with altered neutrophil NADPH oxidase activation, due to the specific lack of plasma AAT. Experiments were performed using circulating neutrophils isolated from healthy controls and individuals with AATD. Superoxide anion (O2−) production was determined from the rate of reduction of cytochrome c. Quantification of membrane NADPH oxidase subunits was performed by mass spectrometry and Western blot analysis. The clinical significance of our in vitro findings was assessed in patients with AATD and severe COPD receiving intravenous AAT replacement therapy. In vitro, AAT significantly inhibited O2− production by stimulated neutrophils and suppressed receptor stimulation of cyclic adenosine monophosphate and extracellular signal-regulated kinase (ERK)1/2 phosphorylation. In addition, AAT reduced plasma membrane translocation of cytosolic phox components of the NADPH oxidase. Ex vivo, AATD neutrophils demonstrated increased plasma membrane-associated p67phox and p47phox and significantly increased O2− production. The described variance in phox protein membrane assembly was resolved post-AAT augmentation therapy in vivo, the effects of which significantly reduced AATD neutrophil O2− production to that of healthy control cells. These results expand our knowledge on the mechanism of neutrophil-driven airways disease associated with AATD. Therapeutic AAT augmentation modified neutrophil NADPH oxidase assembly and reactive oxygen species production, with implications for clinical use in conditions in which oxidative stress plays a pathogenic role. Circulating neutrophils in COPD due to α1-antitrypsin deficiency illustrate increased NADPH oxidase assembly and reactive oxygen species production, a defect corrected by α1-antitrypsin augmentation therapyhttps://bit.ly/38NNTzM
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Affiliation(s)
- Padraig Hawkins
- Irish Centre for Genetic Lung Disease, Dept of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Thomas McEnery
- Irish Centre for Genetic Lung Disease, Dept of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Claudie Gabillard-Lefort
- Irish Centre for Genetic Lung Disease, Dept of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - David A Bergin
- Irish Centre for Genetic Lung Disease, Dept of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Bader Alfawaz
- Irish Centre for Genetic Lung Disease, Dept of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Vipatsorn Shutchaidat
- Irish Centre for Genetic Lung Disease, Dept of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Paula Meleady
- National Institute for Cellular Biology, Dublin City University, Glasnevin, Dublin, Ireland
| | - Michael Henry
- National Institute for Cellular Biology, Dublin City University, Glasnevin, Dublin, Ireland
| | - Orla Coleman
- National Institute for Cellular Biology, Dublin City University, Glasnevin, Dublin, Ireland
| | - Mark Murphy
- Irish Centre for Genetic Lung Disease, Dept of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Noel G McElvaney
- Irish Centre for Genetic Lung Disease, Dept of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland.,These authors contributed equally
| | - Emer P Reeves
- Irish Centre for Genetic Lung Disease, Dept of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland.,These authors contributed equally
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17
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Bhalla M, Heinzinger LR, Morenikeji OB, Marzullo B, Thomas BN, Bou Ghanem EN. Transcriptome Profiling Reveals CD73 and Age-Driven Changes in Neutrophil Responses against Streptococcus pneumoniae. Infect Immun 2021; 89:e0025821. [PMID: 34310891 PMCID: PMC8519284 DOI: 10.1128/iai.00258-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 07/15/2021] [Indexed: 11/20/2022] Open
Abstract
Neutrophils are required for host resistance against Streptococcus pneumoniae, but their function declines with age. We previously found that CD73, an enzyme required for antimicrobial activity, is downregulated in neutrophils (also known as polymorphonuclear leukocytes [PMNs]) from aged mice. This study explored transcriptional changes in neutrophils induced by S. pneumoniae to identify pathways controlled by CD73 and dysregulated with age. Pure bone marrow-derived neutrophils isolated from wild-type (WT) young and old and CD73 knockout (CD73KO) young mice were mock challenged or infected with S. pneumoniae ex vivo. RNA sequencing (RNA-Seq) was performed to identify differentially expressed genes (DEGs). We found that infection triggered distinct global transcriptional changes across hosts that were strongest in CD73KO neutrophils. Surprisingly, there were more downregulated than upregulated genes in all groups upon infection. Downregulated DEGs indicated a dampening of immune responses in old and CD73KO hosts. Further analysis revealed that CD73KO neutrophils expressed higher numbers of long noncoding RNAs (lncRNAs) than those in WT controls. Predicted network analysis indicated that CD73KO-specific lncRNAs control several signaling pathways. We found that genes in the c-Jun N-terminal kinase (JNK)-mitogen-activated protein kinase (MAPK) pathway were upregulated upon infection in CD73KO mice and in WT old mice, but not in WT young mice. This corresponded to functional differences, as phosphorylation of the downstream AP-1 transcription factor component c-Jun was significantly higher in neutrophils from infected CD73KO mice and old mice. Importantly, inhibition of JNK/AP-1 rescued the ability of these neutrophils to kill S. pneumoniae. Together, our findings revealed that the ability of neutrophils to modify their gene expression to better adapt to bacterial infection is in part regulated by CD73 and declines with age.
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Affiliation(s)
- Manmeet Bhalla
- Department of Microbiology and Immunology, State University of New York at Buffalo School of Medicine, Buffalo, New York, USA
| | - Lauren R. Heinzinger
- Department of Microbiology and Immunology, State University of New York at Buffalo School of Medicine, Buffalo, New York, USA
| | - Olanrewaju B. Morenikeji
- Department of Biomedical Sciences, College of Health Sciences and Technology, Rochester Institute of Technology, Rochester, New York, USA
- Division of Biological and Health Sciences, University of Pittsburgh–Bradford, Bradford, Pennsylvania, USA
| | - Brandon Marzullo
- Department of Biochemistry and Center of Excellence in Bioinformatics and Life Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| | - Bolaji N. Thomas
- Department of Biomedical Sciences, College of Health Sciences and Technology, Rochester Institute of Technology, Rochester, New York, USA
| | - Elsa N. Bou Ghanem
- Department of Microbiology and Immunology, State University of New York at Buffalo School of Medicine, Buffalo, New York, USA
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18
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Othman A, Sekheri M, Filep JG. Roles of neutrophil granule proteins in orchestrating inflammation and immunity. FEBS J 2021; 289:3932-3953. [PMID: 33683814 PMCID: PMC9546106 DOI: 10.1111/febs.15803] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/17/2021] [Accepted: 03/05/2021] [Indexed: 12/17/2022]
Abstract
Neutrophil granulocytes form the first line of host defense against invading pathogens and tissue injury. They are rapidly recruited from the blood to the affected sites, where they deploy an impressive arsenal of effectors to eliminate invading microbes and damaged cells. This capacity is endowed in part by readily mobilizable proteins acquired during granulopoiesis and stored in multiple types of cytosolic granules with each granule type containing a unique cargo. Once released, granule proteins contribute to killing bacteria within the phagosome or the extracellular milieu, but are also capable of inflicting collateral tissue damage. Neutrophil-driven inflammation underlies many common diseases. Research over the last decade has documented neutrophil heterogeneity and functional versatility far beyond their antimicrobial function. Emerging evidence indicates that neutrophils utilize granule proteins to interact with innate and adaptive immune cells and orchestrate the inflammatory response. Granule proteins have been identified as important modulators of neutrophil trafficking, reverse transendothelial migration, phagocytosis, neutrophil life span, neutrophil extracellular trap formation, efferocytosis, cytokine activity, and autoimmunity. Hence, defining their roles within the inflammatory locus is critical for minimizing damage to the neighboring tissue and return to homeostasis. Here, we provide an overview of recent advances in the regulation of degranulation, granule protein functions, and signaling in modulating neutrophil-mediated immunity. We also discuss how targeting granule proteins and/or signaling could be harnessed for therapeutic benefits.
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Affiliation(s)
- Amira Othman
- Department of Pathology and Cell Biology, University of Montreal, QC, Canada.,Department of Biomedical Sciences, University of Montreal, QC, Canada.,Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
| | - Meriem Sekheri
- Department of Biomedical Sciences, University of Montreal, QC, Canada.,Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
| | - János G Filep
- Department of Pathology and Cell Biology, University of Montreal, QC, Canada.,Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
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19
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Coto-Llerena M, Lepore M, Spagnuolo J, Di Blasi D, Calabrese D, Suslov A, Bantug G, Duong FH, Terracciano LM, De Libero G, Heim MH. Interferon lambda 4 can directly activate human CD19 + B cells and CD8 + T cells. Life Sci Alliance 2021; 4:e201900612. [PMID: 33158978 PMCID: PMC7668538 DOI: 10.26508/lsa.201900612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 12/12/2022] Open
Abstract
Compared with the ubiquitous expression of type I (IFNα and IFNβ) interferon receptors, type III (IFNλ) interferon receptors are mainly expressed in epithelial cells of mucosal barriers of the of the intestine and respiratory tract. Consequently, IFNλs are important for innate pathogen defense in the lung and intestine. IFNλs also determine the outcome of hepatitis C virus (HCV) infections, with IFNλ4 inhibiting spontaneous clearance of HCV. Because viral clearance is dependent on T cells, we explored if IFNλs can directly bind to and regulate human T cells. We found that human B cells and CD8+ T cells express the IFNλ receptor and respond to IFNλs, including IFNλ4. IFNλs were not inhibitors but weak stimulators of B- and T-cell responses. Furthermore, IFNλ4 showed neither synergistic nor antagonistic effects in co-stimulatory experiments with IFNλ1 or IFNα. Multidimensional flow cytometry of cells from liver biopsies of hepatitis patients from IFNλ4-producers showed accumulation of activated CD8+ T cells with a central memory-like phenotype. In contrast, CD8+ T cells with a senescent/exhausted phenotype were more abundant in IFNλ4-non-producers. It remains to be elucidated how IFNλ4 promotes CD8 T-cell responses and inhibits the host immunity to HCV infections.
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Affiliation(s)
- Mairene Coto-Llerena
- Department of Biomedicine, Hepatology, University Hospital and University of Basel, Basel, Switzerland
| | - Marco Lepore
- Department of Biomedicine, Experimental Immunology, University Hospital and University of Basel, Basel, Switzerland
| | - Julian Spagnuolo
- Department of Biomedicine, Experimental Immunology, University Hospital and University of Basel, Basel, Switzerland
| | - Daniela Di Blasi
- Department of Biomedicine, Hepatology, University Hospital and University of Basel, Basel, Switzerland
- Department of Biomedicine, Experimental Immunology, University Hospital and University of Basel, Basel, Switzerland
| | - Diego Calabrese
- Department of Biomedicine, Hepatology, University Hospital and University of Basel, Basel, Switzerland
| | - Aleksei Suslov
- Department of Biomedicine, Hepatology, University Hospital and University of Basel, Basel, Switzerland
| | - Glenn Bantug
- Department of Biomedicine, Immunobiology, University Hospital and University of Basel, Basel, Switzerland
| | - Francois Ht Duong
- Department of Biomedicine, Hepatology, University Hospital and University of Basel, Basel, Switzerland
| | - Luigi M Terracciano
- Molecular Pathology Division, Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | - Gennaro De Libero
- Department of Biomedicine, Experimental Immunology, University Hospital and University of Basel, Basel, Switzerland
| | - Markus H Heim
- Department of Biomedicine, Hepatology, University Hospital and University of Basel, Basel, Switzerland
- Division of Gastroenterology and Hepatology, Clarunis, University Center for Gastrointestinal and Liver Diseases, Basel, Switzerland
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20
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Daseke MJ, Chalise U, Becirovic-Agic M, Salomon JD, Cook LM, Case AJ, Lindsey ML. Neutrophil signaling during myocardial infarction wound repair. Cell Signal 2021; 77:109816. [PMID: 33122000 PMCID: PMC7718402 DOI: 10.1016/j.cellsig.2020.109816] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/21/2020] [Accepted: 10/21/2020] [Indexed: 12/12/2022]
Abstract
Neutrophils are key effector cells of the innate immune system, serving as a first line of defense in the response to injury and playing essential roles in the wound healing process. Following myocardial infarction (MI), neutrophils infiltrate into the infarct region to propagate inflammation and begin the initial phase of cardiac wound repair. Pro-inflammatory neutrophils release proteases to degrade extracellular matrix (ECM), a necessary step for the removal of necrotic myocytes as a prelude for scar formation. Neutrophils transition their phenotype over time to regulate MI inflammation resolution and stabilize scar formation. Neutrophils contribute to the evolution from inflammation to resolution and scar formation by serving anti-inflammatory and repair functions. As anti-inflammatory cells, neutrophils contribute ECM proteins during scar formation, in particular fibronectin, galectin-3, and vimentin. The diverse and polarizing functions that contribute to MI wound repair make this innate immune cell a viable target to improve MI outcomes. Thus, understanding the signaling involved in neutrophil physiology in the context of MI may help to identify novel therapeutic targets.
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Affiliation(s)
- Michael J Daseke
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS 39216, USA; Research Service, Nebraska-Western Iowa Health Care System, Omaha, NE 68198, USA
| | - Upendra Chalise
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, NE 68198, USA; Research Service, Nebraska-Western Iowa Health Care System, Omaha, NE 68198, USA
| | - Mediha Becirovic-Agic
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Jeffrey D Salomon
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, NE 68198, USA; Departments of Pediatrics, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Leah M Cook
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Division of Pediatric Critical Care, Center for Heart and Vascular Research, Omaha, NE 68198, USA
| | - Adam J Case
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Merry L Lindsey
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, NE 68198, USA; Research Service, Nebraska-Western Iowa Health Care System, Omaha, NE 68198, USA.
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21
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Mazzoleni V, Zimmermann K, Smirnova A, Tarassov I, Prévost G. Staphylococcus aureus Panton-Valentine Leukocidin triggers an alternative NETosis process targeting mitochondria. FASEB J 2020; 35:e21167. [PMID: 33241563 DOI: 10.1096/fj.201902981r] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 09/18/2020] [Accepted: 10/23/2020] [Indexed: 01/18/2023]
Abstract
Panton-Valentine Leukocidin (PVL) is a bicomponent leukotoxin produced by 3%-10% of clinical Staphylococcus aureus (SA) strains involved in the severity of hospital and community-acquired infections. Although PVL was long known as a pore-forming toxin, recent studies have challenged the formation of a pore at the plasma membrane, while its endocytosis and the exact mode of action remain to be defined. In vitro immunolabeling of human neutrophils shows that Neutrophil Extracellular Traps (NETosis) is triggered by the action of purified PVL, but not by Gamma hemolysin CB (HlgCB), a structurally similar SA leukotoxin. PVL causes the ejection of chromatin fibers (NETs) decorated with antibacterial peptides independently of the NADPH oxidase oxidative burst. Leukotoxin partially colocalizes with mitochondria and enhances the production of reactive oxygen species from these organelles, while showing an increased autophagy, which results unnecessary for NETs ejection. PVL NETosis is elicited through Ca2+ -activated SK channels and Myeloperoxidase activity but is abolished by Allopurinol pretreatment of neutrophils. Moreover, massive citrullination of the histone H3 is performed by peptidyl arginine deiminases. Inhibition of this latter enzymes fails to abolish NET extrusion. Unexpectedly, PVL NETosis does not seem to involve Src kinases, which is the main kinase family activated downstream the binding of PVL F subunit to CD45 receptor, while the specific kinase pathway differs from the NADPH oxidase-dependent NETosis. PVL alone causes a different and specific form of NETosis that may rather represent a bacterial strategy conceived to disarm and disrupt the immune response, eventually allowing SA to spread.
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Affiliation(s)
- Viola Mazzoleni
- University of Strasbourg, CHRU Strasbourg, ITI InnoVec, Fédération de Médecine Translationnelle de Strasbourg, UR7290, Institut de Bactériologie, Strasbourg, France
| | - Kiran Zimmermann
- University of Strasbourg, CHRU Strasbourg, ITI InnoVec, Fédération de Médecine Translationnelle de Strasbourg, UR7290, Institut de Bactériologie, Strasbourg, France
| | - Anna Smirnova
- UMR 7156 GMGM Strasbourg University/CNRS, Strasbourg, France
| | - Ivan Tarassov
- UMR 7156 GMGM Strasbourg University/CNRS, Strasbourg, France
| | - Gilles Prévost
- University of Strasbourg, CHRU Strasbourg, ITI InnoVec, Fédération de Médecine Translationnelle de Strasbourg, UR7290, Institut de Bactériologie, Strasbourg, France
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22
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Bobowska A, Granica S, Filipek A, Melzig MF, Moeslinger T, Zentek J, Kruk A, Piwowarski JP. Comparative studies of urolithins and their phase II metabolites on macrophage and neutrophil functions. Eur J Nutr 2020; 60:1957-1972. [PMID: 32960290 PMCID: PMC8137622 DOI: 10.1007/s00394-020-02386-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 09/10/2020] [Indexed: 12/16/2022]
Abstract
Purpose Ellagitannins are high molecular weight polyphenols present in high quantities in various food products. They are metabolized by human and animal gut microbiota to postbiotic metabolites-urolithins, bioavailable molecules of a low molecular weight. Following absorption in the gut, urolithins rapidly undergo phase II metabolism. Thus, to fully evaluate the mechanisms of their biological activity, the in vitro studies should be conducted for their phase II conjugates, mainly glucuronides. The aim of the study was to comparatively determine the influence of urolithin A, iso-urolithin A, and urolithin B together with their respective glucuronides on processes associated with the inflammatory response. Methods The urolithins obtained by chemical synthesis or isolation from microbiota cultures were tested with their respective glucuronides isolated from human urine towards modulation of inflammatory response in THP-1-derived macrophages, RAW 264.7 macrophages, PBMCs-derived macrophages, and primary neutrophils. Results Urolithin A was confirmed to be the most active metabolite in terms of LPS-induced inflammatory response inhibition (TNF-α attenuation, IL-10 induction). The observed strong induction of ERK1/2 phosphorylation has been postulated as the mechanism of its action. None of the tested glucuronide conjugates was active in terms of pro-inflammatory TNF-α inhibition and anti-inflammatory IL-10 and TGF-β1 induction. Conclusion Comparative studies of the most abundant urolithins and their phase II conjugates conducted on human and murine immune cells unambiguously confirmed urolithin A to be the most active metabolite in terms of inhibition of the inflammatory response. Phase II metabolism was shown to result in the loss of urolithins’ pharmacological properties. Electronic supplementary material The online version of this article (10.1007/s00394-020-02386-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Aneta Bobowska
- Department of Pharmacognosy and Molecular Basis of Phytotherapy, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland
| | - Sebastian Granica
- Department of Pharmacognosy and Molecular Basis of Phytotherapy, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland
| | - Agnieszka Filipek
- Department of Pharmacognosy and Molecular Basis of Phytotherapy, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland
| | - Matthias F Melzig
- Department of Pharmaceutical Biology, Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Thomas Moeslinger
- Institute of Physiology, Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Jürgen Zentek
- Institute of Animal Nutrition, Freie Universität Berlin, Berlin, Germany
| | - Aleksandra Kruk
- Department of Pharmacognosy and Molecular Basis of Phytotherapy, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland
| | - Jakub P Piwowarski
- Department of Pharmacognosy and Molecular Basis of Phytotherapy, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland. .,Department of Pharmaceutical Biology, Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany. .,Institute of Animal Nutrition, Freie Universität Berlin, Berlin, Germany.
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23
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Metzemaekers M, Gouwy M, Proost P. Neutrophil chemoattractant receptors in health and disease: double-edged swords. Cell Mol Immunol 2020; 17:433-450. [PMID: 32238918 PMCID: PMC7192912 DOI: 10.1038/s41423-020-0412-0] [Citation(s) in RCA: 220] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 03/05/2020] [Indexed: 02/08/2023] Open
Abstract
Neutrophils are frontline cells of the innate immune system. These effector leukocytes are equipped with intriguing antimicrobial machinery and consequently display high cytotoxic potential. Accurate neutrophil recruitment is essential to combat microbes and to restore homeostasis, for inflammation modulation and resolution, wound healing and tissue repair. After fulfilling the appropriate effector functions, however, dampening neutrophil activation and infiltration is crucial to prevent damage to the host. In humans, chemoattractant molecules can be categorized into four biochemical families, i.e., chemotactic lipids, formyl peptides, complement anaphylatoxins and chemokines. They are critically involved in the tight regulation of neutrophil bone marrow storage and egress and in spatial and temporal neutrophil trafficking between organs. Chemoattractants function by activating dedicated heptahelical G protein-coupled receptors (GPCRs). In addition, emerging evidence suggests an important role for atypical chemoattractant receptors (ACKRs) that do not couple to G proteins in fine-tuning neutrophil migratory and functional responses. The expression levels of chemoattractant receptors are dependent on the level of neutrophil maturation and state of activation, with a pivotal modulatory role for the (inflammatory) environment. Here, we provide an overview of chemoattractant receptors expressed by neutrophils in health and disease. Depending on the (patho)physiological context, specific chemoattractant receptors may be up- or downregulated on distinct neutrophil subsets with beneficial or detrimental consequences, thus opening new windows for the identification of disease biomarkers and potential drug targets.
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Affiliation(s)
- Mieke Metzemaekers
- Laboratory of Molecular Immunology, Rega Institute, KU Leuven, Herestraat 49 bus 1042, B-3000, Leuven, Belgium
| | - Mieke Gouwy
- Laboratory of Molecular Immunology, Rega Institute, KU Leuven, Herestraat 49 bus 1042, B-3000, Leuven, Belgium
| | - Paul Proost
- Laboratory of Molecular Immunology, Rega Institute, KU Leuven, Herestraat 49 bus 1042, B-3000, Leuven, Belgium.
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24
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Lodge KM, Cowburn AS, Li W, Condliffe AM. The Impact of Hypoxia on Neutrophil Degranulation and Consequences for the Host. Int J Mol Sci 2020; 21:ijms21041183. [PMID: 32053993 PMCID: PMC7072819 DOI: 10.3390/ijms21041183] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/06/2020] [Accepted: 02/08/2020] [Indexed: 12/16/2022] Open
Abstract
Neutrophils are key effector cells of innate immunity, rapidly recruited to defend the host against invading pathogens. Neutrophils may kill pathogens intracellularly, following phagocytosis, or extracellularly, by degranulation and the release of neutrophil extracellular traps; all of these microbicidal strategies require the deployment of cytotoxic proteins and proteases, packaged during neutrophil development within cytoplasmic granules. Neutrophils operate in infected and inflamed tissues, which can be profoundly hypoxic. Neutrophilic infiltration of hypoxic tissues characterises a myriad of acute and chronic infectious and inflammatory diseases, and as well as potentially protecting the host from pathogens, neutrophil granule products have been implicated in causing collateral tissue damage in these scenarios. This review discusses the evidence for the enhanced secretion of destructive neutrophil granule contents observed in hypoxic environments and the potential mechanisms for this heightened granule exocytosis, highlighting implications for the host. Understanding the dichotomy of the beneficial and detrimental consequences of neutrophil degranulation in hypoxic environments is crucial to inform potential neutrophil-directed therapeutics in order to limit persistent, excessive, or inappropriate inflammation.
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Affiliation(s)
- Katharine M. Lodge
- Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London SW3 6LY, UK; (K.M.L.); (A.S.C.)
| | - Andrew S. Cowburn
- Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London SW3 6LY, UK; (K.M.L.); (A.S.C.)
| | - Wei Li
- Department of Medicine, University of Cambridge, Cambridge CB2 0SP, UK;
| | - Alison M. Condliffe
- Department of Infection, Immunity and Cardiovascular Diseases, University of Sheffield, Sheffield S10 2RX, UK
- Correspondence:
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25
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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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26
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Ai Z, Udalova IA. Transcriptional regulation of neutrophil differentiation and function during inflammation. J Leukoc Biol 2020; 107:419-430. [PMID: 31951039 DOI: 10.1002/jlb.1ru1219-504rr] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 12/30/2022] Open
Abstract
Neutrophils are the most abundant leukocytes in innate immunity where they elicit powerful effector functions to eliminate invading pathogens and modulate the adaptive as well as the innate immune response. Neutrophil function must be tightly regulated during inflammation and infection to avoid additional tissue damage. Increasing evidence suggests that transcription factors (TFs) function as key regulators to modulate transcriptional output, thereby controlling cell fate decision and the inflammatory responses. However, the molecular mechanisms underlying neutrophil differentiation and function during inflammation remain largely uncharacterized. Here, we provide a comprehensive overview of TFs known to be crucial for neutrophil maturation and in the signaling pathways that control neutrophil differentiation and activation. We also outline how emerging genomic and single-cell technologies may facilitate further discovery of neutrophil transcriptional regulators.
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Affiliation(s)
- Zhichao Ai
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - Irina A Udalova
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
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27
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McElvaney OF, Murphy MP, Reeves EP, McElvaney NG. Anti-cytokines as a Strategy in Alpha-1 Antitrypsin Deficiency. CHRONIC OBSTRUCTIVE PULMONARY DISEASES-JOURNAL OF THE COPD FOUNDATION 2020; 7:203-213. [PMID: 32503090 DOI: 10.15326/jcopdf.7.3.2019.0171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
For many years, the lung disease associated with alpha-1 antitrypsin (AAT) deficiency (AATD) was perceived as being secondary to an imbalance between this serine protease inhibitor and the target protease, neutrophil elastase (NE). More recently, a greater understanding of the pathways leading to lung inflammation has shed light on new potential attributes and presented AATD as an inflammatory condition in which proteases and neutrophils still play a major role, but in which pro-inflammatory cytokines, either induced by the actions of NE or by other pro-inflammatory processes normally modulated by AAT, are involved. In this review, we will look at the various cytokines centrally involved in AATD lung disease, and how a greater understanding of their contribution may help development of targeted therapies.
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Affiliation(s)
- Oisín F McElvaney
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Mark P Murphy
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Emer P Reeves
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Noel G McElvaney
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
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28
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Eichelberger KR, Jones GS, Goldman WE. Inhibition of Neutrophil Primary Granule Release during Yersinia pestis Pulmonary Infection. mBio 2019; 10:e02759-19. [PMID: 31822588 PMCID: PMC6904878 DOI: 10.1128/mbio.02759-19] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 10/21/2019] [Indexed: 12/22/2022] Open
Abstract
Inhalation of Yersinia pestis causes primary pneumonic plague, the most severe manifestation of plague that is characterized by a dramatic neutrophil influx to the lungs. Neutrophils are ineffective during primary pneumonic plague, failing to control Y. pestis growth in the airways. However, the mechanisms by which Y. pestis resists neutrophil killing are incompletely understood. Here, we show that Y. pestis inhibits neutrophil degranulation, an important line of host innate immune defense. We observed that neutrophils from the lungs of mice infected intranasally with Y. pestis fail to release primary granules throughout the course of disease. Using a type III secretion system (T3SS) injection reporter strain, we determined that Y. pestis directly inhibits neutrophil granule release by a T3SS-dependent mechanism. Combinatorial mutant analysis revealed that a Y. pestis strain lacking both effectors YopE and YopH did not inhibit primary granule release and is killed by neutrophils both in vivo and in vitro Similarly, Y. pestis strains injecting only YopE or YopH are able to inhibit the majority of primary granule release from human neutrophils. We determined that YopE and YopH block Rac2 activation and calcium flux, respectively, to inhibit neutrophil primary granule release in isolated human neutrophils. These results demonstrate that Y. pestis coordinates the inhibition of neutrophil primary granule release through the activities of two distinct effectors, and this inhibition promotes Y. pestis survival during primary pneumonic plague.IMPORTANCEYersinia pestis is the causative agent of plague and is one of the deadliest human pathogens. The pneumonic form of Y. pestis infection has played a critical role in the severity of both historical and modern plague outbreaks, yet the host-pathogen interactions that govern the lethality of Yersinia pestis pulmonary infections are incompletely understood. Here, we report that Yersinia pestis inhibits neutrophil degranulation during infection, rendering neutrophils ineffective and allowing unrestricted growth of Y. pestis in the lungs. This coordinated inhibition of granule release not only demonstrates the pathogenic benefit of "silencing" lung neutrophils but also reveals specific host processes and pathways that could be manipulated to reduce the severity of primary pneumonic plague.
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Affiliation(s)
- Kara R Eichelberger
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Grant S Jones
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - William E Goldman
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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29
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MiR-574-5p: A Circulating Marker of Thoracic Aortic Aneurysm. Int J Mol Sci 2019; 20:ijms20163924. [PMID: 31409059 PMCID: PMC6720007 DOI: 10.3390/ijms20163924] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/07/2019] [Accepted: 08/09/2019] [Indexed: 01/16/2023] Open
Abstract
Thoracic aortic aneurysm (TAA) can lead to fatal complications such as aortic dissection. Since aneurysm dimension poorly predicts dissection risk, microRNAs (miRNAs) may be useful to diagnose or risk stratify TAA patients. We aim to identify miRNAs associated with TAA pathogenesis and that are possibly able to improve TAA diagnosis. MiRNA microarray experiments of aortic media tissue samples from 19 TAA patients and 19 controls allowed identifying 232 differentially expressed miRNAs. Using interaction networks between these miRNAs and 690 genes associated with TAA, we identified miR-574-5p as a potential contributor of TAA pathogenesis. Interestingly, miR-574-5p was significantly down-regulated in the TAA tissue compared to the controls, but was up-regulated in serum samples from a separate group of 28 TAA patients compared to 20 controls (p < 0.001). MiR-574-5p serum levels discriminated TAA patients from controls with an area under the receiver operating characteristic curve of 0.87. In the Fbn1C1041G/+ mouse model, miR-574-5p was down-regulated in aortic tissue compared to wild-type (p < 0.05), and up-regulated in plasma extracellular vesicles from Fbn1C1041G/+ mice compared to wild-type mice (p < 0.05). Furthermore, in vascular smooth muscle cells, angiotensin II appears to induce miR-574-5p secretion in extracellular vesicles. In conclusion, miR-574-5p is associated with TAA pathogenesis and may help in diagnosing this disease.
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30
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Szilveszter KP, Németh T, Mócsai A. Tyrosine Kinases in Autoimmune and Inflammatory Skin Diseases. Front Immunol 2019; 10:1862. [PMID: 31447854 PMCID: PMC6697022 DOI: 10.3389/fimmu.2019.01862] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 07/23/2019] [Indexed: 12/30/2022] Open
Abstract
Tyrosine kinases relay signals from diverse leukocyte antigen receptors, innate immune receptors, and cytokine receptors, and therefore mediate the recruitment and activation of various leukocyte populations. Non-receptor tyrosine kinases of the Jak, Src, Syk, and Btk families play major roles in various immune-mediated disorders, and small-molecule tyrosine kinase inhibitors are emerging novel therapeutics in a number of those diseases. Autoimmune and inflammatory skin diseases represent a broad spectrum of immune-mediated diseases. Genetic and pharmacological studies in humans and mice support the role of tyrosine kinases in several inflammatory skin diseases. Atopic dermatitis and psoriasis are characterized by an inflammatory microenvironment which activates cytokine receptors coupled to the Jak-Stat signaling pathway. Jak kinases are also implicated in alopecia areata and vitiligo, skin disorders mediated by cytotoxic T lymphocytes. Genetic studies indicate a critical role for Src-family kinases and Syk in animal models of autoantibody-mediated blistering skin diseases. Here, we review the various tyrosine kinase signaling pathways and their role in various autoimmune and inflammatory skin diseases. Special emphasis will be placed on identification of potential therapeutic targets, as well as on ongoing preclinical and clinical studies for the treatment of inflammatory skin diseases by small-molecule tyrosine kinase inhibitors.
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Affiliation(s)
- Kata P Szilveszter
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Tamás Németh
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
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Aschner Y, Downey GP. The Importance of Tyrosine Phosphorylation Control of Cellular Signaling Pathways in Respiratory Disease: pY and pY Not. Am J Respir Cell Mol Biol 2019; 59:535-547. [PMID: 29812954 DOI: 10.1165/rcmb.2018-0049tr] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Reversible phosphorylation of proteins on tyrosine residues is an essential signaling mechanism by which diverse cellular processes are closely regulated. The tight temporal and spatial control of the tyrosine phosphorylation status of proteins by protein tyrosine kinases (PTKs) and protein tyrosine phosphatases (PTPs) is critical to cellular homeostasis as well as to adaptations to the external environment. Via regulation of cellular signaling cascades involving other protein kinases and phosphatases, receptors, adaptor proteins, and transcription factors, PTKs and PTPs closely control diverse cellular processes such as proliferation, differentiation, migration, inflammation, and maintenance of cellular barrier function. Given these key regulatory roles, it is not surprising that dysfunction of PTKs and PTPs is important in the pathogenesis of human disease, including many pulmonary diseases. The roles of various PTKs and PTPs in acute lung injury and repair, pulmonary fibrosis, pulmonary vascular disease, and inflammatory airway disease are discussed in this review. It is important to note that although there is overlap among many of these proteins in various disease states, the mechanisms by which they influence the pathogenesis of these conditions differ, suggesting wide-ranging roles for these enzymes and their potential as therapeutic targets.
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Affiliation(s)
- Yael Aschner
- 1 Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, and
| | - Gregory P Downey
- 1 Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, and.,2 Department of Immunology and Microbiology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado; and.,3 Department of Medicine.,4 Department of Pediatrics, and.,5 Department of Biomedical Research, National Jewish Health, Denver, Colorado
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32
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Moreau R, Périanin A, Arroyo V. Review of Defective NADPH Oxidase Activity and Myeloperoxidase Release in Neutrophils From Patients With Cirrhosis. Front Immunol 2019; 10:1044. [PMID: 31134093 PMCID: PMC6517494 DOI: 10.3389/fimmu.2019.01044] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 04/24/2019] [Indexed: 12/15/2022] Open
Abstract
Patients with decompensated cirrhosis are highly susceptible to develop bacterial infections and these can trigger multiorgan failure associated with high in-hospital mortality. Neutrophils from patients with decompensated cirrhosis exhibit marked alterations that may explain the susceptibility of these patients to develop bacterial infections. These neutrophil alterations include marked defects in intracellular signaling pathways involving serine/threonine kinases such as protein kinase B (AKT), p38-mitogen-activated protein kinase (MAPK), and the MAP kinases1/2; activation of the NADPH oxidase complex; myeloperoxidase (MPO) release; and bactericidal activity of neutrophils stimulated by the bacterial peptide formyl-Methionine-Leucine-Phenylalanine (fMLF). Impaired activity of the NADPH oxidase 2 (NOX2) complex is also related to reduced levels of expression of its major components through post-transcriptional mechanisms. In addition, the catalytic NOX2 component gp91 phox is subject to degradation by elastase highly present in patients' plasma. A defect in the protein kinase B (AKT) and p38 MAPK-mediated signaling pathways may explain the decrease in phosphorylation of p47 phox (an important component of the NADPH oxidase complex) and MPO release, in response to neutrophil stimulation by fMLF. Most of these alterations are reversible ex vivo with TLR7/8 agonists (CL097, R848), raising the possibility that these agonists might be used in the future to restore neutrophil antibacterial functions in patients with cirrhosis.
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Affiliation(s)
- Richard Moreau
- Inserm, U1149, Centre de Recherche sur l'Inflammation, Paris, France.,UMRS1149, Université Paris Diderot-Paris 7, Paris, France.,Département Hospitalo-Universitaire UNITY, Service d'Hépatologie, Hôpital Beaujon, Assistance Publique-Hôpitaux de Paris, Clichy, France.,Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Axel Périanin
- Inserm, U1149, Centre de Recherche sur l'Inflammation, Paris, France.,UMRS1149, Université Paris Diderot-Paris 7, Paris, France.,Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Vicente Arroyo
- EF Clif, EASL-CLIF Consortium and Grifols Chair, Barcelona, Spain
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Qian X, Zhao H, Chen X, Li J. Disruption of transient receptor potential melastatin 2 decreases elastase release and bacterial clearance in neutrophils. Innate Immun 2019; 24:122-130. [PMID: 29495939 PMCID: PMC6830898 DOI: 10.1177/1753425918759181] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Elastase released by neutrophils is critical for eliminating Gram-negative
bacteria. Ca2+ influx plays a key role in elastase release and
bacterial clearance in neutrophils. Transient receptor potential melastatin 2
(TRPM2) is a Ca2+-permeable cation channel highly expressed in
neutrophils. Here, we explore the role and possible mechanism of TRPM2 in
bacterial clearance in TRPM2 knockout (TRPM2-KO) mice neutrophils. After
exposure to Escherichia coli, TRPM2–KO bone marrow
neutrophils (BMNs) had increased bacterial burden and decreased elastase
release. The same was observed for septic TRPM2-KO mice which also had decreased
survival rate. After stimulation with chemotactic peptide N-formyl-methionyl-leucyl-phenylalanine (fMLP), elastase release
was lower in TRPM2-KO BMNs than in wild type (WT) BMNs. Pre-treatment of WT BMNs
with p38 MAPK inhibitor reduced fMLP-induced elastase release. Compared with WT
BMNs, TRPM2-KO BMNs had decreased p38 MAPK phosphorylation after fMLP
stimulation. Removal of extracellular Ca2+ reduced fMLP-induced p38
MAPK phosphorylation and elastase release. The concentration of intracellular
Ca2+ decreased in TRPM2-KO BMNs compared with WT BMNs after fMLP
treatment. Hence, TRPM2 plays an important role in bacterial clearance in
neutrophils, possibly by regulating elastase release. TRPM2-mediated
Ca2+ influx regulates elastase release partially via p38 MAPK
phosphorylation in neutrophils.
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Affiliation(s)
- XiaoWei Qian
- 1 Department of Anesthesiology, Women's Hospital, School of Medicine, Zhejiang University, China.,2 Department of Anesthesiology, Critical Care and Pain Medicine, The Second Affiliated Hospital and Yuying Children Hospital of Wenzhou Medical University, China
| | - Hang Zhao
- 3 Department of Anesthesiology, Yancheng Third People's Hospital, China
| | - XinZhong Chen
- 1 Department of Anesthesiology, Women's Hospital, School of Medicine, Zhejiang University, China
| | - Jun Li
- 2 Department of Anesthesiology, Critical Care and Pain Medicine, The Second Affiliated Hospital and Yuying Children Hospital of Wenzhou Medical University, China
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Chen CY, Tsai YF, Huang WJ, Chang SH, Hwang TL. Propofol inhibits endogenous formyl peptide-induced neutrophil activation and alleviates lung injury. Free Radic Biol Med 2018; 129:372-382. [PMID: 30312762 DOI: 10.1016/j.freeradbiomed.2018.09.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 09/27/2018] [Accepted: 09/29/2018] [Indexed: 02/06/2023]
Abstract
Critically ill patients have a high risk of sepsis. Various studies have demonstrated that propofol has anti-inflammatory effects that may benefit critically ill patients who require anesthesia. However, the mechanism and therapeutic effect remain incompletely understood. Our previous data suggest that propofol can act as a formyl peptide receptor 1 (FPR1) antagonist. Here, we hypothesize that propofol mitigates sepsis-induced acute lung injury (ALI) by inhibiting mitochondria-derived N-formyl peptide-mediated neutrophil activation. Oxidative stress caused by activated neutrophils is involved in the pathogenesis of ALI. In human neutrophils, propofol competitively reduced the release of superoxide and associated reactive oxygen species induced by fMMYALF, a human mitochondria-derived N-formyl peptide, suggesting that propofol effectively suppresses neutrophilic oxidative stress. In addition, propofol significantly inhibited fMMYALF-induced elastase release, chemotaxis, calcium mobilization, and phosphorylation of protein kinase B and mitogen-activated protein kinases. These results indicate that propofol suppresses neutrophil activation by blocking the interaction between endogenous N-formyl peptide and its receptor, FPR1, thus inhibiting downstream signaling. Furthermore, propofol alleviated alveolar wall disruption, edematous changes, and neutrophil infiltration in lipopolysaccharide-induced ALI in mice. Noticeably, propofol improved the survival of sepsis mice. This study indicates that the anti-neutrophil effects of propofol may benefit critically ill septic patients.
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Affiliation(s)
- Chun-Yu Chen
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Yung-Fong Tsai
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Wei-Ju Huang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Shih-Hsin Chang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan.
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Thabet AA, Youssef FS, Korinek M, Chang FR, Wu YC, Chen BH, El-Shazly M, Singab ANB, Hwang TL. Study of the anti-allergic and anti-inflammatory activity of Brachychiton rupestris and Brachychiton discolor leaves (Malvaceae) using in vitro models. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:299. [PMID: 30413192 PMCID: PMC6230296 DOI: 10.1186/s12906-018-2359-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 10/24/2018] [Indexed: 12/23/2022]
Abstract
Background Brachychiton rupestris and Brachychiton discolor (Malvaceae) are ornamental trees native to Australia. Some members of Brachychiton and its highly related genus, Sterculia, are employed in traditional medicine for itching, dermatitis and other skin diseases. However, scientific studies on these two genera are scarce. Aiming to reveal the scientific basis of the folk medicinal use of these plants, the cytotoxicity, anti-inflammatory and anti-allergic activities of Brachychiton rupestris and Brachychiton discolor leaves extracts and fractions were evaluated. Also, phytochemical investigation of B. rupestris was performed to identify the compounds exerting the biological effect. Methods Extracts as well as fractions of Brachychiton rupestris and Brachychiton discolor were tested for their cytotoxicity versus hepatoma HepG2, lung A549, and breast MDA-MB-231 cancer cell lines. Assessment of the anti-allergic activity was done using degranulation assay in RBL-2H3 mast cells. Anti-inflammatory effect was tested by measuring the suppression of superoxide anion production as well as elastase release in fMLF/CB-induced human neutrophils. Phytochemical investigation of the n-hexane, dichloromethane and ethyl acetate fractions of B. rupestris was done using different chromatographic and spectroscopic techniques. Results The tested samples showed no cytotoxicity towards the tested cell lines. The nonpolar fractions of both B. rupestris and B. discolor showed potent anti-allergic potency by inhibiting the release of β-hexosaminidase. The dichloromethane fraction of both species exhibited the highest anti-inflammatory activity by suppressing superoxide anion generation and elastase release with IC50 values of 2.99 and 1.98 μg/mL, respectively for B. rupestris, and 0.78 and 1.57 μg/mL, respectively for B. discolor. Phytochemical investigation of various fractions of B. rupestris resulted in the isolation of β-amyrin acetate (1), β-sitosterol (2) and stigmasterol (3) from the n-hexane fraction. Scopoletin (4) and β-sitosterol-3-O-β-D-glucoside (5) were obtained from the dichloromethane fraction. Dihydrodehydrodiconiferyl alcohol 4-O-β-D-glucoside (6) and dihydrodehydrodiconiferyl alcohol 9-O-β-D-glucoside (7) were separated from the ethyl acetate fraction. Scopoletin (4) showed anti-allergic and anti-inflammatory activity. Conclusions It was concluded that the nonpolar fractions of both Brachychiton species exhibited anti-allergic and anti-inflammatory activities. Electronic supplementary material The online version of this article (10.1186/s12906-018-2359-6) contains supplementary material, which is available to authorized users.
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Mei J, Zhou WJ, Zhu XY, Lu H, Wu K, Yang HL, Fu Q, Wei CY, Chang KK, Jin LP, Wang J, Wang YM, Li DJ, Li MQ. Suppression of autophagy and HCK signaling promotes PTGS2 high FCGR3 - NK cell differentiation triggered by ectopic endometrial stromal cells. Autophagy 2018; 14:1376-1397. [PMID: 29962266 DOI: 10.1080/15548627.2018.1476809] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Impaired NK cell cytotoxic activity contributes to the local dysfunctional immune environment in endometriosis (EMS), which is an estrogen-dependent gynecological disease that affects the function of ectopic endometrial tissue clearance. The reason for the impaired cytotoxic activity of NK cells in an ectopic lesion microenvironment (ELM) is largely unknown. In this study, we show that the macroautophagy/autophagy level of endometrial stromal cells (ESCs) from EMS decreased under negative regulation of estrogen. The ratio of peritoneal FCGR3- NK to FCGR3+ NK cells increases as EMS progresses. Moreover, the autophagy suppression results in the downregulation of HCK (hematopoietic cellular kinase) by inactivating STAT3 (signal transducer and activator of transcription 3), as well as the increased secretion of the downstream molecules CXCL8/IL8 and IL23A by ESCs, and this increase induced the upregulation of FCGR3- NK cells and decline of cytotoxic activity in ELM. This process is mediated through the depression of microRNA MIR1185-1-3p, which is associated with the activation of the target gene PTGS2 in NK cells. FCGR3- NK with a phenotype of PTGS2/COX2high IFNGlow PRF1low GZMBlow induced by hck knockout (hck-/-) or 3-methyladenine (3-MA, an autophagy inhibitor)-stimulated ESCs accelerates ESC's growth both in vitro and in vivo. These results suggest that the estrogen-autophagy-STAT3-HCK axis participates in the differentiation of PTGS2high IFNGlow PRF1low GZMBlow FCGR3- NK cells in ELM and contributes to the development of EMS. This result provides a scientific basis for potential therapeutic strategies to treat diseases related to impaired NK cell cytotoxic activity. ABBREVIATIONS anti-FCGR3: anti-FCGR3 with neutralizing antibody; Ctrl-ESC: untreated ESCs; CXCL8: C-X-C motif chemokine ligand 8; ectoESC: ESCs from ectopic lesion; ELM: ectopic lesion microenvironment; EMS: endometriosis; ESCs: endometrial stromal cells; eutoESC:eutopic ESCs; HCK: hematopoietic cellular kinase; HCK(OE): overexpression of HCK; IFNG: interferon gamma; IL23A (OE): overexpression of IL23A; KLRK1: Killer cell lectin like receptor K1; MAP1LC3B/LC3B: microtubule-associated protein 1 light chain 3 beta; 3 -MA: 3-methyladenine; 3-MA-ESC: 3-MA-treated ESCs; MIR1185-1-3p+: overexpression of HsMIR1185-1-3p; NK: natural killer; normESCs: normal ESCs; Rap-ESC:rapamycin-treated ESCs; PCNA: proliferating cell nuclear antigen; PF: peritoneal fluid; SFKs: SRC family of cytoplasmic tyrosine kinases; si-HCK: silencing of HCK; siIL23A: silencing of IL23A; USCs: uterus stromal cells.
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Affiliation(s)
- Jie Mei
- a Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology , Fudan University Shanghai Medical College , Shanghai , People's Republic of China.,b Reproductive Medicine Center, Department of Obstetrics and Gynecology, Nanjing Drum Tower Hospital , The Affiliated Hospital of Nanjing University Medicine School , Nanjing , People's Republic of China
| | - Wen-Jie Zhou
- a Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology , Fudan University Shanghai Medical College , Shanghai , People's Republic of China
| | - Xiao-Yong Zhu
- a Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology , Fudan University Shanghai Medical College , Shanghai , People's Republic of China.,c Department of Gynecology, Hospital of Obstetrics and Gynecology, Shanghai Medical School , Fudan University , Shanghai , People's Republic of China
| | - Han Lu
- a Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology , Fudan University Shanghai Medical College , Shanghai , People's Republic of China
| | - Ke Wu
- a Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology , Fudan University Shanghai Medical College , Shanghai , People's Republic of China
| | - Hui-Li Yang
- a Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology , Fudan University Shanghai Medical College , Shanghai , People's Republic of China
| | - Qiang Fu
- d Department of Immunology , Binzhou Medical College , Yantai , People's Republic of China
| | - Chun-Yan Wei
- a Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology , Fudan University Shanghai Medical College , Shanghai , People's Republic of China
| | - Kai-Kai Chang
- b Reproductive Medicine Center, Department of Obstetrics and Gynecology, Nanjing Drum Tower Hospital , The Affiliated Hospital of Nanjing University Medicine School , Nanjing , People's Republic of China
| | - Li-Ping Jin
- e Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital , Tongji University School of Medicine , Shanghai , People's Republic of China
| | - Jian Wang
- a Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology , Fudan University Shanghai Medical College , Shanghai , People's Republic of China
| | - Yong-Ming Wang
- f State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences , Fudan University , Shanghai , People's Republic of China
| | - Da-Jin Li
- a Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology , Fudan University Shanghai Medical College , Shanghai , People's Republic of China
| | - Ming-Qing Li
- a Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology , Fudan University Shanghai Medical College , Shanghai , People's Republic of China
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Liao HR, Chen IS, Liu FC, Lin SZ, Tseng CP. 2’,3-dihydroxy-5-methoxybiphenyl suppresses fMLP-induced superoxide anion production and cathepsin G release by targeting the β-subunit of G-protein in human neutrophils. Eur J Pharmacol 2018; 829:26-37. [DOI: 10.1016/j.ejphar.2018.03.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/22/2018] [Accepted: 03/23/2018] [Indexed: 10/17/2022]
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Cui JB, Chen QQ, Liu TT, Li SJ. Risk factors for early-onset ventilator-associated pneumonia in aneurysmal subarachnoid hemorrhage patients. ACTA ACUST UNITED AC 2018; 51:e6830. [PMID: 29791584 PMCID: PMC5972009 DOI: 10.1590/1414-431x20176830] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 12/06/2017] [Indexed: 01/09/2023]
Abstract
This study aimed to investigate the risk factors related to ventilator-acquired pneumonia (VAP) in aneurysmal subarachnoid hemorrhage (SAH) patients. From January 2011 to December 2015, a single-center retrospective study including 200 SAH patients requiring mechanical ventilation (MV) ≥48 h was performed. The clinical data of these patients were collected and analyzed. The age range of the patients were 41-63 and 72 (36%) were male. The Glasgow coma scale score range was 5-15 and the Simplified Acute Physiology Score II range was 31-52. One hundred and forty-eight (74%) patients had a World Federation of Neurosurgeons (WNFS) score ≥III. Aneurysm was secured with an endovascular coiling procedure in 168 (84%) patients and 94 (47%) patients presented VAP. Male gender (OR=2.25, 95%CI=1.15-4.45), use of mannitol (OR=3.02, 95%CI=1.53-5.94) and enteral feeding above 20 kcal·kg-1·day-1 (OR=2.90, 95%CI=1.26-6.67) after day 7 were independent factors for VAP. Patients with early-onset VAP had a longer duration of sedation (P=0.03), MV (P=0.001) and ICU length of stay (P=0.003) and a worse Glasgow Outcome Scale score (P<0.001), but did not have a higher death rate.
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Affiliation(s)
- J B Cui
- Neurosurgery Intensive Care Unit, Weifang People's Hospital, Weifang, China
| | - Q Q Chen
- Neurosurgery Intensive Care Unit, Weifang People's Hospital, Weifang, China
| | - T T Liu
- Neurosurgery Intensive Care Unit, Weifang People's Hospital, Weifang, China
| | - S J Li
- Neurosurgery Intensive Care Unit, Weifang People's Hospital, Weifang, China
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Dunlea DM, Fee LT, McEnery T, McElvaney NG, Reeves EP. The impact of alpha-1 antitrypsin augmentation therapy on neutrophil-driven respiratory disease in deficient individuals. J Inflamm Res 2018; 11:123-134. [PMID: 29618937 PMCID: PMC5875399 DOI: 10.2147/jir.s156405] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Alpha-1 antitrypsin (AAT) is the most abundant serine protease inhibitor circulating in the blood. AAT deficiency (AATD) is an autosomal codominant condition affecting an estimated 3.4 million individuals worldwide. The clinical disease associated with AATD can present in a number of ways including COPD, liver disease, panniculitis and antineutrophil cytoplasmic antibody vasculitis. AATD is the only proven genetic risk factor for the development of COPD, and deficient individuals who smoke are disposed to more aggressive disease. Principally, AAT is a serine protease inhibitor; however, over the past number of years, the assessment of AAT as simply an antiprotease has evolved, and it is now recognized that AAT has significant anti-inflammatory properties affecting a wide range of cells, including the circulating neutrophil.
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Affiliation(s)
- Danielle M Dunlea
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Laura T Fee
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Thomas McEnery
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Noel G McElvaney
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Emer P Reeves
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
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40
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Finlay TM, Palmer AL, Ousman SS. Murine neutrophils treated with alphaB-crystallin reduce IL-12p40 production by dendritic cells. Immunology 2018. [PMID: 29532462 DOI: 10.1111/imm.12924] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Neutrophils are essential in the fight against invading pathogens. They utilize antimicrobial effector mechanisms, such as phagocytosis, release of proteases and other antimicrobial products, robust oxidative bursts and neutrophil extracellular traps to combat infections. Neutrophils also modulate immune responses through the production of eicosanoids, cytokines and chemokines, as well as via direct communication with other immune cells. This system of high-intensity offense against pathogens is exquisitely balanced through regulation to limit damage to host tissue. Unfortunately, the control of neutrophils is not failproof. In cases of sterile injury, autoimmunity and even during an infection, neutrophils can cause tissue destruction and become detrimental to the host. For that reason, there is a need to find means to regulate the aberrant activation of these cells. We found that alphaB-crystallin (αBC), a heat-shock protein known to have anti-inflammatory abilities, affects certain properties of mouse neutrophils that subsequently influence the pro-inflammatory state of antigen-presenting cells (APCs). More specifically, αBC mediated small but significant increases in the levels of IL-10 and matrix metalloproteinase 8, and altered hydrogen peroxide secretion by stimulated neutrophils. Further, the heat-shock protein influenced the communication between neutrophils and dendritic cells by decreasing the production of pro-inflammatory cytokines, specifically IL-12p40, by the APCs. αBC could thus contribute to dampening neutrophil inflammatory responses by impacting the effect of neutrophils on other immune cells.
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Affiliation(s)
- Trisha M Finlay
- Department of Neuroscience, University of Calgary, Calgary, AB, Canada.,The Hotchkiss Brain Institute, Calgary, AB, Canada
| | - Alexandra L Palmer
- Department of Neuroscience, University of Calgary, Calgary, AB, Canada.,The Hotchkiss Brain Institute, Calgary, AB, Canada
| | - Shalina S Ousman
- The Hotchkiss Brain Institute, Calgary, AB, Canada.,Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada.,Department of Cell Biology & Anatomy, University of Calgary, Calgary, AB, Canada
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Armed for destruction: formation, function and trafficking of neutrophil granules. Cell Tissue Res 2017; 371:455-471. [PMID: 29185068 DOI: 10.1007/s00441-017-2731-8] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/02/2017] [Indexed: 12/21/2022]
Abstract
Neutrophils respond nearly instantly to infection, rapidly deploying a potent enzymatic and chemical arsenal immediately upon entering an infected site. This capacity for rapid and potent responses is endowed by stores of antimicrobial proteins contained in readily mobilizable granules. These granules contain the proteins necessary to mediate the recruitment, chemotaxis, antimicrobial function and NET formation of neutrophils. Four granule types exist, and are sequentially deployed as neutrophils enter infected sites. Secretory vesicles are released first, enabling recruitment of neutrophils out of the blood. Next, specific and gelatinase granules are released to enable neutrophil migration and begin the formation of an antimicrobial environment. Finally, azurophilic granules release potent antimicrobial proteins at the site of infection and into phagosomes. The step-wise mobilization of these granules is regulated by calcium signaling, while specific trafficking regulators and membrane fusion complexes ensure the delivery of granules to the correct subcellular site. In this review, we describe neutrophil granules from their formation through to their deployment at the site of infection, focusing on recent developments in our understanding of the signaling pathways and vesicular trafficking mechanisms which mediate neutrophil degranulation.
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42
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IFN-λ suppresses intestinal inflammation by non-translational regulation of neutrophil function. Nat Immunol 2017; 18:1084-1093. [PMID: 28846084 DOI: 10.1038/ni.3821] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 07/27/2017] [Indexed: 12/17/2022]
Abstract
Interferon-λ (IFN-λ) is a central regulator of mucosal immunity; however, its signaling specificity relative to that of type I interferons is poorly defined. IFN-λ can induce antiviral interferon-stimulated genes (ISGs) in epithelia, while the effect of IFN-λ in non-epithelial cells remains unclear. Here we report that neutrophils responded to IFN-λ. We found that in addition to inducing ISG transcription, IFN-λ (but not IFN-β) specifically activated a translation-independent signaling pathway that diminished the production of reactive oxygen species and degranulation in neutrophils. In mice, IFN-λ was elicited by enteric viruses and acted on neutrophils to decrease oxidative stress and intestinal damage. Thus, IFN-λ acted as a unique immunomodulatory agent by modifying transcriptional and non-translational neutrophil responses, which might permit a controlled development of the inflammatory process.
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Honokiol suppresses formyl peptide-induced human neutrophil activation by blocking formyl peptide receptor 1. Sci Rep 2017; 7:6718. [PMID: 28751674 PMCID: PMC5532207 DOI: 10.1038/s41598-017-07131-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 06/23/2017] [Indexed: 11/24/2022] Open
Abstract
Formyl peptide receptor 1 (FPR1) mediates bacterial and mitochondrial N-formyl peptides-induced neutrophil activation. Therefore, FPR1 is an important therapeutic target for drugs to treat septic or sterile inflammatory diseases. Honokiol, a major bioactive compound of Magnoliaceae plants, possesses several anti-inflammatory activities. Here, we show that honokiol exhibits an inhibitory effect on FPR1 binding in human neutrophils. Honokiol inhibited superoxide anion generation, reactive oxygen species formation, and elastase release in bacterial or mitochondrial N-formyl peptides (FPR1 agonists)-activated human neutrophils. Adhesion of FPR1-induced human neutrophils to cerebral endothelial cells was also reduced by honokiol. The receptor-binding results revealed that honokiol repressed FPR1-specific ligand N-formyl-Nle-Leu-Phe-Nle-Tyr-Lys-fluorescein binding to FPR1 in human neutrophils, neutrophil-like THP-1 cells, and hFPR1-transfected HEK293 cells. However, honokiol did not inhibit FPR2-specific ligand binding to FPR2 in human neutrophils. Furthermore, honokiol inhibited FPR1 agonist-induced calcium mobilization as well as phosphorylation of p38 MAPK, ERK, and JNK in human neutrophils. In conclusion, our data demonstrate that honokiol may have therapeutic potential for treating FPR1-mediated inflammatory diseases.
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Creed TM, Tandon S, Ward RA, McLeish KR. Endocytosis is required for exocytosis and priming of respiratory burst activity in human neutrophils. Inflamm Res 2017. [PMID: 28638979 DOI: 10.1007/s00011-017-1070-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVE AND DESIGN Neutrophil generation of reactive oxygen species (ROS) is enhanced by exposure to pro-inflammatory agents in a process termed priming. Priming is depending on exocytosis of neutrophil granules and p47phox phosphorylation-dependent translocation of cytosolic NADPH oxidase components. Clathrin-mediated endocytosis was recently reported to be necessary for priming, but the mechanism linking endocytosis to priming was not identified. The present study examined the hypothesis that endocytosis regulates neutrophil priming by controlling granule exocytosis. MATERIALS AND METHODS Clathrin-mediated endocytosis by isolated human neutrophils was inhibited by chlorpromazine, monodansylcadaverine, and sucrose. Exocytosis of granule subsets was measured as release of granule components by ELISA or chemiluminescence. ROS generation was measured as extracellular release of superoxide as reduction of ferrocytochrome c. p38 MAPK activation and p47phox phosphorylation were measured by immunoblot analysis. Statistical analysis was performed using a one-way ANOVA with the Tukey-Kramer multiple-comparison test. RESULTS Inhibition of endocytosis prevented priming of superoxide release by TNFα and inhibited TNFα stimulation and priming of exocytosis of all four granule subsets. Inhibition of endocytosis did not reduce TNFα-stimulated p38 MAPK activation or p47phox phosphorylation. Inhibition of NADPH oxidase activity blocked TNFα stimulation of secretory vesicle and gelatinase granule exocytosis. CONCLUSIONS Endocytosis is linked to priming of respiratory burst activity through ROS-mediated control of granule exocytosis.
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Affiliation(s)
- T Michael Creed
- Department of Medicine, University of Louisville School of Medicine, Baxter I Research Building, Room 102, 570 South Preston Street, Louisville, KY, 40202, USA
| | - Shweta Tandon
- Department of Medicine, University of Louisville School of Medicine, Baxter I Research Building, Room 102, 570 South Preston Street, Louisville, KY, 40202, USA
| | - Richard A Ward
- Department of Medicine, University of Louisville School of Medicine, Baxter I Research Building, Room 102, 570 South Preston Street, Louisville, KY, 40202, USA
| | - Kenneth R McLeish
- Department of Medicine, University of Louisville School of Medicine, Baxter I Research Building, Room 102, 570 South Preston Street, Louisville, KY, 40202, USA. .,Robley Rex VAMC, Louisville, KY, 40206, USA.
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45
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Németh T, Virtic O, Sitaru C, Mócsai A. The Syk Tyrosine Kinase Is Required for Skin Inflammation in an In Vivo Mouse Model of Epidermolysis Bullosa Acquisita. J Invest Dermatol 2017; 137:2131-2139. [PMID: 28576735 PMCID: PMC5624865 DOI: 10.1016/j.jid.2017.05.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 05/09/2017] [Accepted: 05/21/2017] [Indexed: 01/10/2023]
Abstract
The inflammatory form of epidermolysis bullosa acquisita is caused by autoantibodies against type VII collagen (C7), a component of the dermal-epidermal junction. We have previously shown that myeloid Src family kinases mediate skin inflammation triggered by anti-C7 antibodies. Here we identify the Syk tyrosine kinase as a critical component of autoantibody-induced skin inflammation downstream of Src family kinases. Immobilized C7–anti-C7 immune complexes triggered neutrophil activation and Syk phosphorylation in a Src family kinase-dependent manner. Bone marrow chimeric mice lacking Syk in their hematopoietic compartment were completely protected from skin inflammation triggered by anti-C7 antibodies despite normal circulating anti-C7 levels. Syk deficiency abrogated the accumulation of CXCL2, IL-1β, and leukotriene B4 at the site of inflammation and resulted in defective in vivo neutrophil recruitment. Syk–/– neutrophils had a normal intrinsic migratory capacity but failed to release CXCL2 or leukotriene B4 upon activation by immobilized C7–anti-C7 immune complexes, indicating a role for Syk in the amplification of the inflammation process. These results identify Syk as a critical component of skin inflammation in a mouse model of epidermolysis bullosa acquisita and as a potential therapeutic target in epidermolysis bullosa acquisita and other mechanistically related inflammatory skin diseases such as bullous pemphigoid.
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Affiliation(s)
- Tamás Németh
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary; MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Oana Virtic
- Department of Dermatology, University Hospital Freiburg, Freiburg, Germany
| | - Cassian Sitaru
- Department of Dermatology, University Hospital Freiburg, Freiburg, Germany; BIOSS Centre for Biological Signalling Studies, Freiburg, Germany
| | - Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary; MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary.
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46
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Yang SC, Chang SH, Hsieh PW, Huang YT, Ho CM, Tsai YF, Hwang TL. Dipeptide HCH6-1 inhibits neutrophil activation and protects against acute lung injury by blocking FPR1. Free Radic Biol Med 2017; 106:254-269. [PMID: 28232203 DOI: 10.1016/j.freeradbiomed.2017.02.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 01/24/2017] [Accepted: 02/17/2017] [Indexed: 12/12/2022]
Abstract
Formyl peptide receptor 1 (FPR1) is an emerging therapeutic target for the discovery of drugs to treat neutrophilic inflammatory diseases. However, development of FPR1 antagonists for clinical use is still inadequate. The purpose of this study was to identify a synthetic dipeptide N-(N-benzoyl-L-tryptophanyl)-D-phenylanlanine methyl ester (HCH6-1) as a FPR1 inhibitor and to investigate its protective effects against acute lung injury (ALI). HCH6-1 inhibited superoxide anion generation, elastase release, and chemotaxis in human neutrophils specifically activated by formyl-L-methionyl-L-leucyl-L-phenylalanine (fMLF), an FPR1 agonist. HCH6-1 produced right shifts in the concentration-response curves of fMLF, suggesting that HCH6-1 was a competitive antagonist of FPR1. Indeed, HCH6-1 bound to FPR1 in human neutrophils and neutrophil-like THP-1 as well as hFPR1-transfected HEK293 cells. Also, the FPR1 downstream signaling pathways were competitively inhibited by HCH6-1. Furthermore, HCH6-1 prevented pulmonary neutrophil infiltration and edema along with alveolar damage in LPS-induced ALI in mice. Our findings suggest that HCH6-1, a FPR1 antagonist, may have potential as a new therapeutic agent for treating FPR1-involved inflammatory lung diseases.
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Affiliation(s)
- Shun-Chin Yang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei 112, Taiwan; Division of Natural Products, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Shih-Hsin Chang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Industry of Human Ecology, Research Center for Chinese Herbal Medicine, and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
| | - Pei-Wen Hsieh
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Division of Natural Products, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Industry of Human Ecology, Research Center for Chinese Herbal Medicine, and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Yin-Ting Huang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chiu-Ming Ho
- Department of Anesthesiology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei 112, Taiwan
| | - Yung-Fong Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Division of Natural Products, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Industry of Human Ecology, Research Center for Chinese Herbal Medicine, and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.
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Vorobjeva N, Prikhodko A, Galkin I, Pletjushkina O, Zinovkin R, Sud'ina G, Chernyak B, Pinegin B. Mitochondrial reactive oxygen species are involved in chemoattractant-induced oxidative burst and degranulation of human neutrophils in vitro. Eur J Cell Biol 2017; 96:254-265. [PMID: 28325500 DOI: 10.1016/j.ejcb.2017.03.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 03/04/2017] [Accepted: 03/04/2017] [Indexed: 12/23/2022] Open
Abstract
Activation of neutrophils is accompanied by the oxidative burst, exocytosis of various granule types (degranulation) and a delay in spontaneous apoptosis. The major source of reactive oxygen species (ROS) in human neutrophils is NADPH oxidase (NOX2), however, other sources of ROS also exist. Although the function of ROS is mainly defensive, they can also play a regulatory role in cell signaling. However, the contribution of various sources of ROS in these processes is not clear. We investigated a possible role of mitochondria-derived ROS (mtROS) in the regulation of neutrophil activation induced by chemoattractant fMLP in vitro. Using the mitochondria-targeted antioxidant SkQ1, we demonstrated that mtROS are implicated in the oxidative burst caused by NOX2 activation as well as in the exocytosis of primary (azurophil) and secondary (specific) granules. Scavenging of mtROS with SkQ1 slightly accelerated spontaneous apoptosis and significantly stimulated apoptosis of fMLP-activated neutrophils. These data indicate that mtROS play a critical role in signal transduction that mediates the major neutrophil functional responses in the process of activation.
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Affiliation(s)
- Nina Vorobjeva
- Department Immunology, Biology Faculty; Lomonosov Moscow State University, 119998 Moscow, Russia; Institute of Immunology, FMBA, Kashirskoe Shosse 24/2, 115478, Moscow, Russia.
| | - Anastasia Prikhodko
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Ivan Galkin
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Olga Pletjushkina
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Roman Zinovkin
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Galina Sud'ina
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Boris Chernyak
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Boris Pinegin
- Institute of Immunology, FMBA, Kashirskoe Shosse 24/2, 115478, Moscow, Russia
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48
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Geraghty P, Hadas E, Kim BH, Dabo AJ, Volsky DJ, Foronjy R. HIV infection model of chronic obstructive pulmonary disease in mice. Am J Physiol Lung Cell Mol Physiol 2017; 312:L500-L509. [PMID: 28104604 DOI: 10.1152/ajplung.00431.2016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 01/12/2017] [Accepted: 01/12/2017] [Indexed: 11/22/2022] Open
Abstract
Cigarette smoke usage is prevalent in human immunodeficiency virus (HIV)-positive patients, and, despite highly active antiretroviral therapy, these individuals develop an accelerated form of chronic obstructive pulmonary disease (COPD). Studies investigating the mechanisms of COPD development in HIV have been limited by the lack of suitable mouse models. Here we describe a model of HIV-induced COPD in wild-type mice using EcoHIV, a chimeric HIV capable of establishing chronic infection in immunocompetent mice. A/J mice were infected with EcoHIV and subjected to whole body cigarette smoke exposure. EcoHIV was detected in alveolar macrophages of mice. Compared with uninfected mice, concomitant EcoHIV infection significantly reduced forced expiratory flow 50%/forced vital capacity and enhanced distal airspace enlargement following cigarette smoke exposure. Lung IL-6, granulocyte-macrophage colony-stimulating factor, neutrophil elastase, cathepsin G, and matrix metalloproteinase-9 expression was significantly enhanced in smoke-exposed EcoHIV-infected mice. These changes coincided with enhanced IκBα, ERK1/2, p38, and STAT3 phosphorylation and lung cell apoptosis. Thus, the EcoHIV smoke exposure mouse model reproduces several of the pathophysiological features of HIV-related COPD in humans, indicating that this murine model can be used to determine key parameters of HIV-related COPD and to test future therapies for this disorder.
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Affiliation(s)
- Patrick Geraghty
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, State University of New York Downstate Medical Center, Brooklyn, New York.,Department of Cell Biology, State University of New York Downstate Medical Center, Brooklyn, New York; and
| | - Eran Hadas
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Boe-Hyun Kim
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Abdoulaye J Dabo
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, State University of New York Downstate Medical Center, Brooklyn, New York.,Department of Cell Biology, State University of New York Downstate Medical Center, Brooklyn, New York; and
| | - David J Volsky
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Robert Foronjy
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, State University of New York Downstate Medical Center, Brooklyn, New York; .,Department of Cell Biology, State University of New York Downstate Medical Center, Brooklyn, New York; and
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49
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Hirano Y, Yang WL, Aziz M, Zhang F, Sherry B, Wang P. MFG-E8-derived peptide attenuates adhesion and migration of immune cells to endothelial cells. J Leukoc Biol 2017; 101:1201-1209. [PMID: 28096298 DOI: 10.1189/jlb.3a0416-184rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 12/20/2016] [Accepted: 12/28/2016] [Indexed: 02/05/2023] Open
Abstract
Milk fat globule-epidermal growth factor-factor 8 (MFG-E8) plays an immunomodulatory role in inflammatory diseases. MFG-E8-derived short peptide (MSP68) greatly reduces neutrophil infiltration and injury in the lung during sepsis. In this study, we examined the effect of MSP68 on chemotaxis of various immune cells and its regulatory mechanism. Bone marrow-derived neutrophils (BMDNs) from C57BL/6 mice, human monocyte THP-1 cell line, and human T lymphocyte Jurkat cell line were used for adhesion and migration assays using a Transwell method in the presence of MSP68. Treatment with MSP68 significantly inhibited the BMDN and THP-1 cell but not Jurkat cell adhesion on the TNF-α-stimulated pulmonary artery endothelial cell (PAEC) monolayer dose-dependently. MSP68 also significantly reduced BMDN adhesion on VCAM-1-coated wells dose dependently. Surface plasmon resonance (SPR) analysis revealed that MSP68 efficiently recognized integrin α4β1 (receptor for VCAM-1) at the dissociation constant (KD) of 1.53 × 10-7 M. These findings implicate that MSP68 prevents neutrophil adhesion to the activated endothelial cells by interfering with the binding between integrin α4β1 on neutrophils and VCAM-1 on endothelial cells. Moreover, MSP68 significantly attenuated the migration of BMDN and THP-1 cells but not Jurkat cells to their chemoattractants. Pretreatment with MSP68 inhibited the transmigration of BMDNs across the PAECs toward chemoattractants, fMLP, MIP-2, and complement fragment 5a (C5a) dose-dependently. Finally, we identified that the activation of p38 MAPK in BMDNs by fMLP was inhibited by MSP68. Thus, MSP68 attenuates extravasation of immune cells through the endothelial cell lining into inflamed tissue, implicating MSP68 to be a novel, therapeutic agent for inflammatory diseases caused by excessive immune cell infiltration.
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Affiliation(s)
- Yohei Hirano
- Center for Immunology and Inflammation, The Feinstein Institute for Medical Research, Manhasset, New York, USA.,Department of Emergency and Critical Care Medicine, Juntendo University and Urayasu Hospital, Chiba, Japan; and
| | - Weng-Lang Yang
- Center for Immunology and Inflammation, The Feinstein Institute for Medical Research, Manhasset, New York, USA.,Department of Surgery, Hofstra Northwell School of Medicine, Manhasset, New York, USA
| | - Monowar Aziz
- Center for Immunology and Inflammation, The Feinstein Institute for Medical Research, Manhasset, New York, USA
| | - Fangming Zhang
- Center for Immunology and Inflammation, The Feinstein Institute for Medical Research, Manhasset, New York, USA
| | - Barbara Sherry
- Center for Immunology and Inflammation, The Feinstein Institute for Medical Research, Manhasset, New York, USA
| | - Ping Wang
- Center for Immunology and Inflammation, The Feinstein Institute for Medical Research, Manhasset, New York, USA; .,Department of Surgery, Hofstra Northwell School of Medicine, Manhasset, New York, USA
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50
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Silva-Filho SE, Wiirzler LAM, Cavalcante HAO, Uchida NS, de Souza Silva-Comar FM, Cardia GFE, da Silva EL, Aguiar RP, Bersani-Amado CA, Cuman RKN. Effect of patchouli (Pogostemon cablin) essential oil on in vitro and in vivo leukocytes behavior in acute inflammatory response. Biomed Pharmacother 2016; 84:1697-1704. [DOI: 10.1016/j.biopha.2016.10.084] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/26/2016] [Accepted: 10/27/2016] [Indexed: 01/08/2023] Open
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