1
|
Huertas J, Lee HT. Multi‑faceted roles of cathepsins in ischemia reperfusion injury (Review). Mol Med Rep 2022; 26:368. [PMID: 36300202 PMCID: PMC9644425 DOI: 10.3892/mmr.2022.12885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022] Open
Abstract
Cathepsins are one of the most abundant proteases within the lysosomes with diverse physiological effects ranging from immune responses, cell death and intracellular protein degradation. Cathepsins are involved in extracellular and systemic functions such as systemic inflammation and extracellular matrix degradation. Ischemia reperfusion (IR) injury is responsible for numerous diseases including myocardial infarction, acute kidney injury, stroke and acute graft failure after transplant surgery. Inflammation plays a major role in the reperfusion phase of IR injury and previous research has shown that cathepsins are key mediators of the inflammation cascade as well as apoptosis. Taken together, cathepsins modulation could provide potential therapeutic approaches to attenuate IR injury. The present review summarized the current understanding of various cathepsin subtypes, their major physiologic functions, their roles in multi‑organ IR injury and detailed selective cathepsin inhibitors with therapeutic potential.
Collapse
Affiliation(s)
- Jaime Huertas
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, NY 10032-3784, USA
| | - H. Thomas Lee
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, NY 10032-3784, USA
| |
Collapse
|
2
|
Pasman R, Krom BP, Zaat SAJ, Brul S. The Role of the Oral Immune System in Oropharyngeal Candidiasis-Facilitated Invasion and Dissemination of Staphylococcus aureus. FRONTIERS IN ORAL HEALTH 2022; 3:851786. [PMID: 35464779 PMCID: PMC9021398 DOI: 10.3389/froh.2022.851786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 02/25/2022] [Indexed: 11/13/2022] Open
Abstract
Candida albicans and Staphylococcus aureus account for most invasive fungal and bacterial bloodstream infections (BSIs), respectively. However, the initial point of invasion responsible for S. aureus BSIs is often unclear. Recently, C. albicans has been proposed to mediate S. aureus invasion of immunocompromised hosts during co-colonization of oral mucosal surfaces. The status of the oral immune system crucially contributes to this process in two distinct ways: firstly, by allowing invasive C. albicans growth during dysfunction of extra-epithelial immunity, and secondly following invasion by some remaining function of intra-epithelial immunity. Immunocompromised individuals at risk of developing invasive oral C. albicans infections could, therefore, also be at risk of contracting concordant S. aureus BSIs. Considering the crucial contribution of both oral immune function and dysfunction, the aim of this review is to provide an overview of relevant aspects of intra and extra-epithelial oral immunity and discuss predominant immune deficiencies expected to facilitate C. albicans induced S. aureus BSIs.
Collapse
Affiliation(s)
- Raymond Pasman
- Department of Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | - Bastiaan P. Krom
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Sebastian A. J. Zaat
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam, Netherlands
| | - Stanley Brul
- Department of Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
- *Correspondence: Stanley Brul
| |
Collapse
|
3
|
Surucu Yilmaz N, Bilgic Eltan S, Kayaoglu B, Geckin B, Heredia RJ, Sefer AP, Kiykim A, Nain E, Kasap N, Dogru O, Yucelten AD, Cinel L, Karasu G, Yesilipek A, Sozeri B, Kaya GG, Yilmaz IC, Baydemir I, Aydin Y, Cansen Kahraman D, Haimel M, Boztug K, Karakoc-Aydiner E, Gursel I, Ozen A, Baris S, Gursel M. Low Density Granulocytes and Dysregulated Neutrophils Driving Autoinflammatory Manifestations in NEMO Deficiency. J Clin Immunol 2022; 42:582-596. [PMID: 35028801 DOI: 10.1007/s10875-021-01176-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 10/20/2021] [Indexed: 11/27/2022]
Abstract
NF-κB essential modulator (NEMO, IKK-γ) deficiency is a rare combined immunodeficiency caused by mutations in the IKBKG gene. Conventionally, patients are afflicted with life threatening recurrent microbial infections. Paradoxically, the spectrum of clinical manifestations includes severe inflammatory disorders. The mechanisms leading to autoinflammation in NEMO deficiency are currently unknown. Herein, we sought to investigate the underlying mechanisms of clinical autoinflammatory manifestations in a 12-years old male NEMO deficiency (EDA-ID, OMIM #300,291) patient by comparing the immune profile of the patient before and after hematopoietic stem cell transplantation (HSCT). Response to NF-kB activators were measured by cytokine ELISA. Neutrophil and low-density granulocyte (LDG) populations were analyzed by flow cytometry. Peripheral blood mononuclear cells (PBMC) transcriptome before and after HSCT and transcriptome of sorted normal-density neutrophils and LDGs were determined using the NanoString nCounter gene expression panels. ISG15 expression and protein ISGylation was based on Immunoblotting. Consistent with the immune deficiency, PBMCs of the patient were unresponsive to toll-like and T cell receptor-activators. Paradoxically, LDGs comprised 35% of patient PBMCs and elevated expression of genes such as MMP9, LTF, and LCN2 in the granulocytic lineage, high levels of IP-10 in the patient's plasma, spontaneous ISG15 expression and protein ISGylation indicative of a spontaneous type I interferon (IFN) signature were observed, all of which normalized after HSCT. Collectively, our results suggest that type I IFN signature observed in the patient, dysregulated LDGs and spontaneously activated neutrophils, potentially contribute to tissue damage in NEMO deficiency.
Collapse
Affiliation(s)
- Naz Surucu Yilmaz
- Department of Biological Sciences, Middle East Technical University, B-58, Üniversiteler Mah. Dumlupınar Bulvarı No:1, Ankara, Turkey
| | - Sevgi Bilgic Eltan
- Division of Pediatric Allergy and Immunology, Marmara University, Fevzi Çakmak Mah. No: 41, Istanbul, Turkey.,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey.,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey
| | - Basak Kayaoglu
- Department of Biological Sciences, Middle East Technical University, B-58, Üniversiteler Mah. Dumlupınar Bulvarı No:1, Ankara, Turkey
| | - Busranur Geckin
- Department of Biological Sciences, Middle East Technical University, B-58, Üniversiteler Mah. Dumlupınar Bulvarı No:1, Ankara, Turkey
| | - Raul Jimenez Heredia
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
| | - Asena Pinar Sefer
- Division of Pediatric Allergy and Immunology, Marmara University, Fevzi Çakmak Mah. No: 41, Istanbul, Turkey.,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey.,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey
| | - Ayca Kiykim
- Faculty of Medicine, Pediatric Allergy and Immunology, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ercan Nain
- Division of Pediatric Allergy and Immunology, Marmara University, Fevzi Çakmak Mah. No: 41, Istanbul, Turkey.,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey.,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey
| | - Nurhan Kasap
- Division of Pediatric Allergy and Immunology, Marmara University, Fevzi Çakmak Mah. No: 41, Istanbul, Turkey.,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey.,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey
| | - Omer Dogru
- Division of Pediatric Hematology-Oncology, Marmara University, Istanbul, Turkey
| | | | - Leyla Cinel
- Division of Pathology, Marmara University, Istanbul, Turkey
| | - Gulsun Karasu
- Goztepe Medicalpark Hospital, Pediatric Stem Cell Transplantation Unit, İstanbul, Turkey
| | - Akif Yesilipek
- Goztepe Medicalpark Hospital, Pediatric Stem Cell Transplantation Unit, İstanbul, Turkey
| | - Betul Sozeri
- Division of Pediatric Rheumatology, University of Health Sciences, Umraniye Research and Training Hospital, Istanbul, Turkey
| | - Goksu Gokberk Kaya
- Therapeutic ODN Research Lab, Department of Molecular Biology and Genetics, Bilkent University, Bilkent, 06800, Ankara, Turkey
| | - Ismail Cem Yilmaz
- Department of Biological Sciences, Middle East Technical University, B-58, Üniversiteler Mah. Dumlupınar Bulvarı No:1, Ankara, Turkey
| | - Ilayda Baydemir
- Department of Biological Sciences, Middle East Technical University, B-58, Üniversiteler Mah. Dumlupınar Bulvarı No:1, Ankara, Turkey
| | - Yagmur Aydin
- Department of Biological Sciences, Middle East Technical University, B-58, Üniversiteler Mah. Dumlupınar Bulvarı No:1, Ankara, Turkey
| | - Deniz Cansen Kahraman
- KanSiL, Department of Health Informatics, Graduate School of Informatics, Middle East Technical University, Ankara, Turkey
| | - Matthias Haimel
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Kaan Boztug
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria.,St. Anna Children's Hospital, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
| | - Elif Karakoc-Aydiner
- Division of Pediatric Allergy and Immunology, Marmara University, Fevzi Çakmak Mah. No: 41, Istanbul, Turkey.,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey.,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey
| | - Ihsan Gursel
- Therapeutic ODN Research Lab, Department of Molecular Biology and Genetics, Bilkent University, Bilkent, 06800, Ankara, Turkey
| | - Ahmet Ozen
- Division of Pediatric Allergy and Immunology, Marmara University, Fevzi Çakmak Mah. No: 41, Istanbul, Turkey.,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey.,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey
| | - Safa Baris
- Division of Pediatric Allergy and Immunology, Marmara University, Fevzi Çakmak Mah. No: 41, Istanbul, Turkey. .,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey. .,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey.
| | - Mayda Gursel
- Department of Biological Sciences, Middle East Technical University, B-58, Üniversiteler Mah. Dumlupınar Bulvarı No:1, Ankara, Turkey.
| |
Collapse
|
4
|
Burster T, Mustafa Z, Myrzakhmetova D, Zhanapiya A, Zimecki M. Hindrance of the Proteolytic Activity of Neutrophil-Derived Serine Proteases by Serine Protease Inhibitors as a Management of Cardiovascular Diseases and Chronic Inflammation. Front Chem 2021; 9:784003. [PMID: 34869231 PMCID: PMC8634265 DOI: 10.3389/fchem.2021.784003] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 10/20/2021] [Indexed: 12/23/2022] Open
Abstract
During inflammation neutrophils become activated and segregate neutrophil serine proteases (NSPs) to the surrounding environment in order to support a natural immune defense. However, an excess of proteolytic activity of NSPs can cause many complications, such as cardiovascular diseases and chronic inflammatory disorders, which will be elucidated on a biochemical and immunological level. The application of selective serine protease inhibitors is the logical consequence in the management of the indicated comorbidities and will be summarized in this briefing.
Collapse
Affiliation(s)
- Timo Burster
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Zhadyra Mustafa
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Dinara Myrzakhmetova
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Anuar Zhanapiya
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Michal Zimecki
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| |
Collapse
|
5
|
Cathepsin G and Its Role in Inflammation and Autoimmune Diseases. Arch Rheumatol 2018; 33:498-504. [PMID: 30874236 DOI: 10.5606/archrheumatol.2018.6595] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 12/23/2017] [Indexed: 01/01/2023] Open
Abstract
Cathepsin G belongs to the neutrophil serine proteases family, known for its function in killing pathogens. Studies over the past several years indicate that cathepsin G has important effects on inflammation and immune reaction, and may be a key factor in the pathogenesis of some autoimmune diseases. In this article, we discuss the roles of cathepsin G in inflammation, immune reaction, and autoimmune diseases. To our knowledge, this is the first study providing important information about cathepsin G in the pathogenesis of autoimmune diseases and suggesting that cathepsin G may be a new biomarker or treatment target.
Collapse
|
6
|
Lillico DME, Pemberton JG, Stafford JL. Trypsin differentially modulates the surface expression and function of channel catfish leukocyte immune-type receptors. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2016; 65:231-244. [PMID: 27461858 DOI: 10.1016/j.dci.2016.07.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 07/19/2016] [Accepted: 07/19/2016] [Indexed: 06/06/2023]
Abstract
Channel catfish (Ictalurus punctatus) leukocyte immune-type receptors (IpLITRs) are immunoregulatory proteins that control innate immune cellular responses. Previously, we demonstrated that two representative IpLITR forms, IpLITR 2.6b and IpLITR 1.1b, engage distinct components of the phagocytic machinery resulting in unique target capture and engulfment phenotypes. IpLITR-induced phagocytic mechanisms were also differentially susceptible to temperature and pharmacological inhibitors of canonical signaling mediators. In the present study, we examined the sensitivity of IpLITR-mediated phagocytosis to the endogenous serine-protease trypsin, a well-known mediator of immunoregulatory receptor functions. Trypsin selectively reduced IpLITR 1.1b cell surface expression and phagocytic activity in a dose-dependent manner. We also observed a significant alteration of the IpLITR 1.1b phagocytic phenotype post-trypsin exposure; whereas, the IpLITR 2.6b-mediated target engulfment phenotype was unchanged. Recovery experiments suggested that trypsin-induced inhibition of IpLITR 1.1b-dependent phagocytosis was reversible and that the re-establishment of phagocytic function was associated with a recovery of receptor surface expression. Cell-surface biotinylation and immunoprecipitation studies demonstrated that IpLITR 1.1b normally exists as a mature (∼70 kDa) protein on the cell surface. However, trypsin treatment reduced expression of the mature receptor and processed IpLITR 1.1b into an ∼60 kDa form. The trypsin-generated and putative immature IpLITR 1.1b form was not present on the cell surface; suggesting that the cleaved receptor may have been internalized, post-processing, by regulated endocytosis. Taken together, these results reveal a unique role for trypsin as a selective modulator of IpLITR-mediated phagocytosis and highlight a conserved role for serine proteases as potent immunomodulatory factors.
Collapse
Affiliation(s)
- Dustin M E Lillico
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Joshua G Pemberton
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - James L Stafford
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.
| |
Collapse
|
7
|
Immuno-evasive tactics by schistosomes identify an effective allergy preventative. Exp Parasitol 2015; 153:139-50. [PMID: 25819297 DOI: 10.1016/j.exppara.2015.03.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 03/15/2015] [Accepted: 03/20/2015] [Indexed: 12/11/2022]
Abstract
Many chronic inflammatory diseases can be improved by helminth infection, but the mechanisms are poorly understood. Allergy and helminthiasis are both associated with Th2-like immune responses; thus, defining how infection with parasites leads to reduced allergy has been particularly challenging. We sought to better understand this conundrum by evaluating host-parasite interactions involved in Th2 immunity in human schistosomiasis. Immune cells were cultured with schistosomes and the effect on CD23, an IgE receptor associated with resistance in schistosomiasis, was evaluated. Cells treated with schistosomes demonstrated reduced surface CD23 levels with a parallel accumulation of soluble (s) CD23 suggesting this IgE receptor is proteolytically cleaved by the parasite. Consistent with this hypothesis, a schistosome-generated (SG)-sCD23 fragment of 15 kDa was identified. SG-sCD23 inhibited IgE from binding to CD23 and FcεRI, but lacked the ability to bind CD21. These results suggested that schistosomes target IgE-mediated immunity in immuno-evasive tactics. Based on its characteristics, we predicted that SG-sCD23 would function as an efficacious allergy preventative. Treatment of human FcεRI-transgenic mice with recombinant (r) SG-sCD23 reduced the ability of human IgE to induce an acute allergic response in vivo. In addition, an optimized form of rSG-sCD23 with an introduced point mutation at Asp258 (D258E)to stabilize IgE binding had increased efficacy compared to native rSG-sCD23. Schistosome infection may thus inhibit allergic-like protective immune responses by increasing soluble IgE decoy receptors. Allergy treatments based on this naturally occurring phenomenon may be highly effective and have fewer side effects with long-term use.
Collapse
|
8
|
Lavoie-Lamoureux A, Moran K, Beauchamp G, Mauel S, Steinbach F, Lefebvre-Lavoie J, Martin JG, Lavoie JP. IL-4 activates equine neutrophils and induces a mixed inflammatory cytokine expression profile with enhanced neutrophil chemotactic mediator release ex vivo. Am J Physiol Lung Cell Mol Physiol 2010; 299:L472-82. [PMID: 20639353 DOI: 10.1152/ajplung.00135.2009] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Neutrophils are potent contributors to the lung pathophysiological changes occurring in allergic airway inflammation, which typically involve T helper type 2 (Th2) cytokine overexpression. We have previously reported that equine pulmonary endothelial cells are activated by the Th2 cytokine IL-4 and express chemotactic factors for neutrophils after stimulation. We have further explored the possible mechanisms linking Th2-driven inflammation and neutrophilia by studying the effects of recombinant equine IL-4, a prototypical Th2 cytokine, on peripheral blood neutrophils (PBN) isolated from normal animals and from horses with asthmatic airway inflammation (equine heaves). We found that IL-4 induced morphological changes in PBN, dose- and time-dependent expression of IL-8 mRNA, as well as the release of chemotactic factors for neutrophils in culture supernatants. Also, IL-4 induced a mixed inflammatory response in PBN from control and asthmatic-animals with increased expression of proinflammatory IL-8 and TNF-α but a marked inhibition of IL-1β. IL-4 type I receptor (IL-4Rα) and CD23 (FcεRII) expression were also upregulated by IL-4. Importantly, disease as well as chronic antigenic exposure modified gene expression by PBN. Finally, we found that activation of equine neutrophils with IL-4 involved STAT6 phosphorylation and p38 MAPK and phosphatidylinositol 3-kinase (PI3K); the pharmacological inhibitors, SB-203580 and LY-294002, respectively, significantly reversed IL-4-induced gene modulation in PBN. Overall, results from this study add to the link between Th2-driven inflammation and neutrophilia in the equine model and further extend the characterization of IL-4 effects on neutrophils.
Collapse
Affiliation(s)
- Anouk Lavoie-Lamoureux
- Département de Sciences Cliniques, Université de Montréal, Saint-Hyacinthe, Québec, Canada
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Piper MG, Massullo PR, Loveland M, Druhan LJ, Kindwall-Keller TL, Ai J, Copelan A, Avalos BR. Neutrophil elastase downmodulates native G-CSFR expression and granulocyte-macrophage colony formation. JOURNAL OF INFLAMMATION-LONDON 2010; 7:5. [PMID: 20205821 PMCID: PMC2824667 DOI: 10.1186/1476-9255-7-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2009] [Accepted: 01/21/2010] [Indexed: 11/10/2022]
Abstract
BACKGROUND The granulocyte colony-stimulating factor receptor (G-CSFR) plays a critical role in maintaining homeostatic levels of circulating neutrophils (PMN). The mechanisms modulating G-CSFR surface expression to prevent chronic neutrophilia are poorly understood. Here, we report that neutrophil elastase (NE) proteolytically cleaves the G-CSFR on human PMN and blocks G-CSFR-mediated granulopoiesis in vitro. METHODS Human peripheral blood PMN isolated from healthy donors were incubated with NE. Expression of the G-CSFR was analyzed by flow cytometry and western blot analyses. Detection of G-CSFR cleavage products from the culture supernatants was also performed. Human bone marrow mononuclear cells were also cultured in the presence or absence of NE to determine its effects on the proliferation of granulocyte-macrophage colony forming units (CFU-GM). RESULTS Treatment of PMN with NE induced a time-dependent decrease in G-CSFR expression that correlated with its degradation and the appearance of proteolytic cleavage fragments in conditioned media. Immunoblot analysis confirmed the G-CSFR was cleaved at its amino-terminus. Treatment of progenitor cells with NE prior to culture inhibited the growth of granulocyte-macrophage colony forming units. CONCLUSIONS These findings indicate that in addition to transcriptional controls and ligand-induced internalization, direct proteolytic cleavage of the G-CSFR by NE also downregulates G-CSFR expression and inhibits G-CSFR-mediated granulopoiesis in vitro. Our results suggest that NE negatively regulates granulopoiesis through a novel negative feedback loop.
Collapse
Affiliation(s)
- Melissa G Piper
- The Davis Heart and Lung Research Institute, The Ohio State University, Columbus, 43210, OH, USA.
| | | | | | | | | | | | | | | |
Collapse
|
10
|
Roghanian A, Sallenave JM. Neutrophil elastase (NE) and NE inhibitors: canonical and noncanonical functions in lung chronic inflammatory diseases (cystic fibrosis and chronic obstructive pulmonary disease). J Aerosol Med Pulm Drug Deliv 2008; 21:125-44. [PMID: 18518838 DOI: 10.1089/jamp.2007.0653] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Proteases and antiproteases have multiple important roles both in normal homeostasis and during inflammation. Antiprotease molecules may have developed in a parallel network, consisting of "alarm" and "systemic" inhibitors. Their primary function was thought until recently to mainly prevent the potential injurious effects of excess release of proteolytic enzymes, such as neutrophil elastase (NE), from inflammatory cells. However, recently, new potential roles have been ascribed to these antiproteases. We will review "canonical" and new "noncanonical" functions for these molecules, and more particularly, those pertaining to their role in innate and adaptive immunity (antibacterial activity and biasing of the adaptive immune response).
Collapse
Affiliation(s)
- Ali Roghanian
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, Edinburgh University Medical School, Edinburgh, United Kingdom
| | | |
Collapse
|
11
|
Pham CTN. Neutrophil serine proteases fine-tune the inflammatory response. Int J Biochem Cell Biol 2007; 40:1317-33. [PMID: 18180196 DOI: 10.1016/j.biocel.2007.11.008] [Citation(s) in RCA: 173] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2007] [Revised: 11/12/2007] [Accepted: 11/13/2007] [Indexed: 12/21/2022]
Abstract
Neutrophil serine proteases are granule-associated enzymes known mainly for their function in the intracellular killing of pathogens. Their extracellular release upon neutrophil activation is traditionally regarded as the primary reason for tissue damage at the sites of inflammation. However, studies over the past several years indicate that neutrophil serine proteases may also be key regulators of the inflammatory response. Neutrophil serine proteases specifically process and release chemokines, cytokines, and growth factors, thus modulating their biological activity. In addition, neutrophil serine proteases activate and shed specific cell surface receptors, which can ultimately prolong or terminate cytokine-induced responses. Moreover, it has been proposed that these proteases can impact cell viability through their caspase-like activity and initiate the adaptive immune response by directly activating lymphocytes. In summary, these studies point to neutrophil serine proteases as versatile mediators that fine-tune the local immune response and identify them as potential targets for therapeutic interventions.
Collapse
Affiliation(s)
- Christine T N Pham
- Division of Rheumatology, Department of Internal Medicine, Washington University, 660 South Euclid Avenue, Box 8045, St. Louis, MO 63110, USA.
| |
Collapse
|
12
|
Meng JF, McFall C, Rosenwasser LJ. Polymorphism R62W results in resistance of CD23 to enzymatic cleavage in cultured cells. Genes Immun 2007; 8:215-23. [PMID: 17301828 DOI: 10.1038/sj.gene.6364376] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A nonsynonymous single nucleotide polymorphism (SNP) of the low-affinity IgE receptor (FcvarepsilonRII/CD23) gene resulting in an arginine to tryptophan exchange at amino-acid position 62 (R62W) has been associated with enhanced T-cell responses to antigen in allergic subjects. To explore the mechanism, a CD23(a) cDNA was cloned into the plasmid pCMVScript-CD23a-C with a C allele (R62). The pCMVScript-CD23a-T with T (W62) was produced using a site-directed mutagenesis approach. The pCMVScript-CD23a-C only (CC), mixture of pCMVScript-CD23a-T and pCMVSCript-CD23a-C (CT) and pCMVScript-CD23a-T only (TT) plasmids were transfected in Cos-7 cells at equivalence in transfection efficiency. No soluble CD23 was released from TT transfectants whereas a higher level of soluble CD23 was detected in CC than in CT transfectants. Human leukocyte elastase (HLE), cathepsin G, the dust mite allergen Der p I and ADAM 33 (A disintegrin and metalloproteinase) were found to cleave membrane CD23 in CC but not in TT transfectants, implying the resistance of CD23 to enzymatic cleavage associated with T mutant. Addition of tunicamycin resulted in the resistance of CD23 to Der p I mediated cleavage in CC but no change in TT transfectants. These results indicate that R62W influences the stability of membrane CD23 molecules due to possibly diminished N-glycosylation.
Collapse
Affiliation(s)
- J-F Meng
- 1Pediatric Immunology Research Department, Children's Mercy Hospital/School of Medicine, University of Missouri at Kansas City, Kansas City, MO, USA.
| | | | | |
Collapse
|
13
|
Abstract
CD23, the low-affinity immunoglobulin (Ig)E receptor (FcepsilonRII), is widely distributed on the surface of various human cells. CD23 mediates numerous IgE-related immune responses (including allergen focusing) by enhancing IgE antigen complex presentation, regulating IgE synthesis, influencing cell differentiation and growth of both B- and T-cells, and stimulating production of pro-inflammatory mediators from monocytes/macrophages, eosinophils, and even airway smooth muscle cells. Both membrane and soluble CD23 play an important role in allergic reactions. Cellular contacts and cytokines modulate its expression in a concerted manner as needed for allergic reactions. Expression of CD23 and soluble CD23 has been associated with allergic diseases. Targeting CD23 with monoclonal antibody (MAb) is a promising candidate therapy in allergic diseases. A newly developed agent known as Lumiliximab, which is an anti-CD23 MAb (Lumiliximab), was demonstrated to be a well-tolerated agent in a phase I clinical trial (a placebo-controlled study with allergic asthma). Adverse events were mild, and no relationship was apparent between the dose of Lumilixilab and the frequency, severity, or type of event. Sustained and dose-dependent decreases in mean serum total IgE concentrations were noted. The serum half-life of Lumilixilab increased from 2 to 10 d with increasing doses. Blocking antigen presentation, preventing costimulation signals, and reducing production of pro-inflammatory mediators are some of the potential mechanisms involved for anti-CD23 activity. Although the safety and clinical efficacy of Lumilixilab in allergic asthma and rhinitis require confirmation, the observed data imply that anti-CD23 is a promising candidate therapy option for future treatment of allergic diseases.
Collapse
Affiliation(s)
- Lanny J Rosenwasser
- Division of Allergy and Immunology, Department of Medicine, National Jewish Medical and Research Center/University of Colorado Health Sciences Center, Denver, CO, USA.
| | | |
Collapse
|
14
|
Richter R, Bistrian R, Escher S, Forssmann WG, Vakili J, Henschler R, Spodsberg N, Frimpong-Boateng A, Forssmann U. Quantum proteolytic activation of chemokine CCL15 by neutrophil granulocytes modulates mononuclear cell adhesiveness. THE JOURNAL OF IMMUNOLOGY 2005; 175:1599-608. [PMID: 16034099 DOI: 10.4049/jimmunol.175.3.1599] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Monocyte infiltration into inflammatory sites is generally preceded by neutrophils. We show here that neutrophils may support this process by activation of CCL15, a human chemokine circulating in blood plasma. Neutrophils were found to release CCL15 proteolytic activity in the course of hemofiltration of blood from renal insufficiency patients. Processing of CCL15 immunoreactivity (IR) in the pericellular space is suggested by a lack of proteolytic activity in blood and blood filtrate, but a shift of the retention time (t(R)) of CCL15-IR, detected by chromatographic separation of CCL15-IR in blood and hemofiltrate. CCL15 molecules with N-terminal deletions of 23 (delta23) and 26 (delta26) aa were identified as main proteolytic products in hemofiltrate. Neutrophil cathepsin G was identified as the principal protease to produce delta23 and delta26 CCL15. Also, elastase displays CCL15 proteolytic activity and produces a delta21 isoform. Compared with full-length CCL15, delta23 and delta26 isoforms displayed a significantly increased potency to induce calcium fluxes and chemotactic activity on monocytes and to induce adhesiveness of mononuclear cells to fibronectin. Thus, our findings indicate that activation of monocytes by neutrophils is at least in part induced by quantum proteolytic processing of circulating or endothelium-bound CCL15 by neutrophil cathepsin G.
Collapse
|
15
|
Daniels BB, Askew SL, van de Venter M, Oosthuizen V. Production of biologically active recombinant human soluble CD23 and its effect on PBMCs isolated from hyper-IgE blood. Cell Immunol 2005; 234:146-53. [PMID: 16083870 DOI: 10.1016/j.cellimm.2005.06.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2005] [Revised: 06/03/2005] [Accepted: 06/11/2005] [Indexed: 12/29/2022]
Abstract
A recombinant form of human soluble CD23 (sCD23), the low affinity receptor for IgE (FcepsilonRII), was produced by PCR cloning the lectin-binding domain sequence into a bacterial expression vector. After renaturation and purification, the sCD23 bound IgE and divalent metal ions, indicating its activity. The recombinant human sCD23 exhibited similar proinflammatory properties as the native protein. Although interleukin-1beta, tumour necrosis factor-alpha, and nuclear factor-kappaB appeared not to be enhanced significantly in unstimulated RPMI 8866 B-lymphoblastoid and U937 promonocytic cell lines with 24 h incubation of recombinant sCD23, they were produced in both healthy and hyper-IgE-derived peripheral blood mononuclear cells, especially tumour necrosis factor-alpha. This study concludes that while recombinant and chimeric sCD23 may be useful in blocking IgE binding to immune cells and decreasing IgE synthesis by B-lymphocytes, the production of proinflammatory cytokines, particularly tumour necrosis factor-alpha will enhance immune responses in cases of asthma, allergy, and hyper-IgE syndrome.
Collapse
Affiliation(s)
- Brodie B Daniels
- Department of Biochemistry and Microbiology, Nelson Mandela Metropolitan University, P.O. Box 77000, Port Elizabeth 6031, South Africa
| | | | | | | |
Collapse
|
16
|
Pilette C, Ouadrhiri Y, Dimanche F, Vaerman JP, Sibille Y. Secretory component is cleaved by neutrophil serine proteinases but its epithelial production is increased by neutrophils through NF-kappa B- and p38 mitogen-activated protein kinase-dependent mechanisms. Am J Respir Cell Mol Biol 2003; 28:485-98. [PMID: 12654638 DOI: 10.1165/rcmb.4913] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
We previously showed that expression of polymeric immunoglobulin receptor (pIgR)/secretory component (SC), the epithelial receptor assuming transport of polymeric IgA in mucosal secretions, is strongly decreased in severe chronic obstructive pulmonary disease. Here, we evaluated in vitro the effects of polymorphonuclear neutrophil (PMN) mediators on pIgR/SC. On polyacrylamide gel electrophoresis analysis, soluble SC was rapidly cleaved by supernatants from phorbol-myristate-acetate-activated PMN, through a serine proteinase activity. Moreover, purified PMN serine proteinases also cleaved SC. Similarly, polymeric IgA was rapidly cleaved in monomers by neutrophil elastase, whereas secretory immunoglobulin A was relatively resistant to neutrophil elastase. Surface pIgR on human bronchial epithelial cells was also cleaved by serine proteinases, as shown by immunofluorescence. In contrast, pIgR/SC production by cultured epithelial cells (quantified by enzyme-linked immunosorbent assay) was significantly increased by supernatants from interleukin-8/formylmethionylleucylphenylalanine-activated PMN (122.6 +/- 17.3 versus 70.9 +/- 9 ng/mg protein, P < 0.01). Upregulation of pIgR/SC production by bronchial epithelial cells was abolished by nuclear factor kappa B- and p38 mitogen-activated protein kinase (MAPK) inhibitors. Moreover, supernatants from interleukin-8/formylmethionylleucylphenylalanine-activated PMN induced the phosphorylation of I kappa B-alpha and p38 MAPK in epithelial cells, independently of serine proteinases. Thus, PMN serine proteinases cleave pIgR/SC, whereas activated PMN induce an increased pIgR/SC expression through epithelial activation of nuclear factor kappa B and p38 MAPK pathways.
Collapse
Affiliation(s)
- Charles Pilette
- Experimental Medicine Unit, Christian de Duve Institute of Cellular Pathology, University of Louvain, Brussels, Belgium
| | | | | | | | | |
Collapse
|