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Ebrahimi R, Nasri F, Kalantari T. Coagulation and Inflammation in COVID-19: Reciprocal Relationship between Inflammatory and Coagulation Markers. Ann Hematol 2024; 103:1819-1831. [PMID: 38349409 DOI: 10.1007/s00277-024-05630-1] [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: 09/17/2023] [Accepted: 01/16/2024] [Indexed: 05/14/2024]
Abstract
The coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), formerly known as 2019-nCoV. Numerous cellular and biochemical issues arise after COVID-19 infection. The severe inflammation that is caused by a number of cytokines appears to be one of the key hallmarks of COVID-19. Additionally, people with severe COVID-19 have coagulopathy and fulminant thrombotic events. We briefly reviewed the COVID-19 disease at the beginning of this paper. The inflammation and coagulation markers and their alterations in COVID-19 illness are briefly discussed in the parts that follow. Next, we talked about NETosis, which is a crucial relationship between coagulation and inflammation. In the end, we mentioned the two-way relationship between inflammation and coagulation, as well as the factors involved in it. We suggest that inflammation and coagulation are integrated systems in COVID-19 that act on each other in such a way that not only inflammation can activate coagulation but also coagulation can activate inflammation.
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Affiliation(s)
- Rasoul Ebrahimi
- Division of Laboratory Hematology and Blood Banking, Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Nasri
- Division of Laboratory Hematology and Blood Banking, Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Tahereh Kalantari
- Division of Laboratory Hematology and Blood Banking, Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.
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Shekhar A, Maddheshiya N, Adit, Rastogi V, Ramalingam K. Anti-inflammatory Role of Trypsin, Rutoside, and Bromelain Combination in Temporomandibular Joint Osteoarthritis: A Systematic Review. Cureus 2024; 16:e51749. [PMID: 38322061 PMCID: PMC10846757 DOI: 10.7759/cureus.51749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2024] [Indexed: 02/08/2024] Open
Abstract
The objective of this systematic review was to assess the effectiveness, acceptability, and safety of systemic enzyme therapy, consisting of trypsin, bromelain, and rutoside trihydrate, as an anti-inflammatory agent, either when utilized independently or in conjunction with non-steroidal anti-inflammatory drugs (NSAIDs). This systematic review adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Two studies met the inclusion criteria and were assessed in the review. The bias risk was evaluated using the risk-of-bias tool for randomized trials (RoB 2). Both studies revealed highly significant results for the study population. Individuals receiving oral enzymes and diclofenac sodium combination therapy showed a significant improvement in pain reduction, better eating, and mouth opening, as well as a decrease in joint noise and jerky mandibular motions. Patients receiving systemic enzyme therapy with diclofenac combinations performed better than those receiving NSAIDs alone, and the differences were quite substantial. For the treatment of internal derangement of the temporomandibular joint (TMJ), we recommend combining enzymes and diclofenac. Systemic enzyme therapy can be used in the treatment of TMJ osteoarthritis, as it shows a highly significant result in the study population.
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Affiliation(s)
- Amlendu Shekhar
- Oral Medicine and Radiology, Faculty of Dental Sciences, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
| | - Nisha Maddheshiya
- Oral Medicine and Radiology, Faculty of Dental Sciences, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
| | - Adit
- Oral Medicine and Radiology, Faculty of Dental Sciences, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
| | - Varun Rastogi
- Oral Pathology, Universal College of Medical Sciences and Teaching Hospital, Bhairahawa, NPL
| | - Karthikeyan Ramalingam
- Oral Pathology and Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
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3
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Klabukov I, Atiakshin D, Kogan E, Ignatyuk M, Krasheninnikov M, Zharkov N, Yakimova A, Grinevich V, Pryanikov P, Parshin V, Sosin D, Kostin AA, Shegay P, Kaprin AD, Baranovskii D. Post-Implantation Inflammatory Responses to Xenogeneic Tissue-Engineered Cartilage Implanted in Rabbit Trachea: The Role of Cultured Chondrocytes in the Modification of Inflammation. Int J Mol Sci 2023; 24:16783. [PMID: 38069106 PMCID: PMC10706106 DOI: 10.3390/ijms242316783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/08/2023] [Accepted: 11/13/2023] [Indexed: 12/18/2023] Open
Abstract
Immune responses to tissue-engineered grafts made of xenogeneic materials remain poorly studied. The scope of current investigations is limited by the lack of information on orthotopically implanted grafts. A deeper understanding of these processes is of great importance since innovative surgical approaches include the implantation of xenogeneic decellularized scaffolds seeded by cells. The purpose of our work is to study the immunological features of tracheal repair during the implantation of tissue-engineered constructs based on human xenogeneic scaffolds modified via laser radiation in rabbits. The samples were stained with hematoxylin and Safranin O, and they were immunostained with antibodies against tryptase, collagen II, vimentin, and CD34. Immunological and inflammatory responses were studied by counting immune cells and evaluating blood vessels and collagen. Leukocyte-based inflammation prevailed during the implantation of decellularized unseeded scaffolds; meanwhile, plasma cells were significantly more abundant in tissue-engineered constructs. Mast cells were insignificantly more abundant in tissue-engineered construct samples. Conclusions: The seeding of decellularized xenogeneic cartilage with chondrocytes resulted in a change in immunological reactions upon implantation, and it was associated with plasma cell infiltration. Tissue-engineered grafts widely differed in design, including the type of used cells. The question of immunological response depending on the tissue-engineered graft composition requires further investigation.
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Affiliation(s)
- Ilya Klabukov
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
- Department of Urology and Operative Nephrology, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
- Obninsk Institute for Nuclear Power Engineering, National Research Nuclear University MEPhI, 249031 Obninsk, Russia
| | - Dmitri Atiakshin
- Scientific and Educational Resource Center for Innovative Technologies of Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Evgenia Kogan
- Strukov Department of Pathological Anatomy, Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Michael Ignatyuk
- Scientific and Educational Resource Center for Innovative Technologies of Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Mikhail Krasheninnikov
- Department of Urology and Operative Nephrology, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Nickolay Zharkov
- Strukov Department of Pathological Anatomy, Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Anna Yakimova
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
| | - Vyacheslav Grinevich
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
| | - Pavel Pryanikov
- Russian Child Clinical Hospital, Pirogov Russian National Research Medical University, 119571 Moscow, Russia
| | - Vladimir Parshin
- National Medical Research Center of Phthisiopulmonology and Infectious Diseases of the Ministry of Health of the Russian Federation, 127473 Moscow, Russia
| | - Dmitry Sosin
- Centre for Strategic Planning and Management of Biomedical Health Risks of the Federal Medical Biological Agency, 119121 Moscow, Russia
| | - Andrey A. Kostin
- Department of Urology and Operative Nephrology, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Peter Shegay
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
| | - Andrey D. Kaprin
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
- Department of Urology and Operative Nephrology, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Denis Baranovskii
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
- Department of Urology and Operative Nephrology, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
- Department of Biomedicine, University of Basel, Petersplatz 1, 4001 Basel, Switzerland
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4
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Bencosme-Cuevas E, Kim TK, Nguyen TT, Berry J, Li J, Adams LG, Smith LA, Batool SA, Swale DR, Kaufmann SHE, Jones-Hall Y, Mulenga A. Ixodes scapularis nymph saliva protein blocks host inflammation and complement-mediated killing of Lyme disease agent, Borrelia burgdorferi. Front Cell Infect Microbiol 2023; 13:1253670. [PMID: 37965264 PMCID: PMC10641286 DOI: 10.3389/fcimb.2023.1253670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 09/14/2023] [Indexed: 11/16/2023] Open
Abstract
Tick serine protease inhibitors (serpins) play crucial roles in tick feeding and pathogen transmission. We demonstrate that Ixodes scapularis (Ixs) nymph tick saliva serpin (S) 41 (IxsS41), secreted by Borrelia burgdorferi (Bb)-infected ticks at high abundance, is involved in regulating tick evasion of host innate immunity and promoting host colonization by Bb. Recombinant (r) proteins were expressed in Pichia pastoris, and substrate hydrolysis assays were used to determine. Ex vivo (complement and hemostasis function related) and in vivo (paw edema and effect on Bb colonization of C3H/HeN mice organs) assays were conducted to validate function. We demonstrate that rIxsS41 inhibits chymase and cathepsin G, pro-inflammatory proteases that are released by mast cells and neutrophils, the first immune cells at the tick feeding site. Importantly, stoichiometry of inhibition analysis revealed that 2.2 and 2.8 molecules of rIxsS41 are needed to 100% inhibit 1 molecule of chymase and cathepsin G, respectively, suggesting that findings here are likely events at the tick feeding site. Furthermore, chymase-mediated paw edema, induced by the mast cell degranulator, compound 48/80 (C48/80), was blocked by rIxsS41. Likewise, rIxsS41 reduced membrane attack complex (MAC) deposition via the alternative and lectin complement activation pathways and dose-dependently protected Bb from complement killing. Additionally, co-inoculating C3H/HeN mice with Bb together with rIxsS41 or with a mixture (rIxsS41 and C48/80). Findings in this study suggest that IxsS41 markedly contributes to tick feeding and host colonization by Bb. Therefore, we conclude that IxsS41 is a potential candidate for an anti-tick vaccine to prevent transmission of the Lyme disease agent.
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Affiliation(s)
- Emily Bencosme-Cuevas
- Department of Veterinary Pathobiology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Tae Kwon Kim
- Department of Veterinary Pathobiology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, United States
| | - Thu-Thuy Nguyen
- Department of Veterinary Pathobiology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Jacquie Berry
- Department of Veterinary Pathobiology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Jianrong Li
- Department of Veterinary Integrative Biosciences, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Leslie Garry Adams
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | | | | | - Daniel R. Swale
- Emerging Pathogens Institute, University of Florida, Gainesville, FL, United States
| | - Stefan H. E. Kaufmann
- Department of Veterinary Pathobiology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
- Hagler Institute for Advanced Study, Texas A&M University, College Station, TX, United States
- Max Planck Institute for Infection Biology, Berlin, Germany
- Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Yava Jones-Hall
- Department of Veterinary Pathobiology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Albert Mulenga
- Department of Veterinary Pathobiology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
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5
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Boccatonda A, Balletta M, Vicari S, Hoxha A, Simioni P, Campello E. The Journey Through the Pathogenesis and Treatment of Venous Thromboembolism in Inflammatory Bowel Diseases: A Narrative Review. Semin Thromb Hemost 2023; 49:744-755. [PMID: 36455617 DOI: 10.1055/s-0042-1758869] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Inflammatory bowel diseases (IBDs) are chronic inflammatory disorders of the gastrointestinal tract including Crohn's disease and ulcerative colitis, which may result in several extraintestinal complications (∼20-30% of cases), such as increased risk of venous thromboembolism (VTE). The main pathophysiological mechanism of VTE is an inflammation-induced hypercoagulable state, and recent data have shown that endothelial dysregulation due to gut and systemic inflammation may also lead to a prothrombotic state. Several prothrombotic alterations have been described, such as the activation of the coagulation system, platelet abnormalities, and dysregulation of fibrinolysis. Furthermore, the dysregulation of the gut microbiome seems to play a vital role in increasing systemic inflammation and thus inducing a procoagulant state. Our review aims to examine the main correlations between IBD and VTE, the underlying pathophysiology, and current therapeutic options.
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Affiliation(s)
- Andrea Boccatonda
- Department of Internal Medicine, Bentivoglio Hospital, AUSL Bologna, Bologna, Italy
| | - Marco Balletta
- Department of Internal Medicine, Bologna University, Bologna, Italy
| | - Susanna Vicari
- Department of Internal Medicine, Bentivoglio Hospital, AUSL Bologna, Bologna, Italy
| | - Ariela Hoxha
- Hemorrhagic and Thrombotic Diseases Unit, Department of Medicine (DIMED), Padova University Hospital, Padova, Italy
| | - Paolo Simioni
- Hemorrhagic and Thrombotic Diseases Unit, Department of Medicine (DIMED), Padova University Hospital, Padova, Italy
| | - Elena Campello
- Hemorrhagic and Thrombotic Diseases Unit, Department of Medicine (DIMED), Padova University Hospital, Padova, Italy
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6
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Dileepan KN, Raveendran VV, Sharma R, Abraham H, Barua R, Singh V, Sharma R, Sharma M. Mast cell-mediated immune regulation in health and disease. Front Med (Lausanne) 2023; 10:1213320. [PMID: 37663654 PMCID: PMC10470157 DOI: 10.3389/fmed.2023.1213320] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 07/17/2023] [Indexed: 09/05/2023] Open
Abstract
Mast cells are important components of the immune system, and they perform pro-inflammatory as well as anti-inflammatory roles in the complex process of immune regulation in health and disease. Because of their strategic perivascular localization, sensitivity and adaptability to the microenvironment, and ability to release a variety of preformed and newly synthesized effector molecules, mast cells perform unique functions in almost all organs. Additionally, Mast cells express a wide range of surface and cytoplasmic receptors which enable them to respond to a variety of cytokines, chemicals, and pathogens. The mast cell's role as a cellular interface between external and internal environments as well as between vasculature and tissues is critical for protection and repair. Mast cell interactions with different immune and nonimmune cells through secreted inflammatory mediators may also turn in favor of disease promoting agents. First and forefront, mast cells are well recognized for their multifaceted functions in allergic diseases. Reciprocal communication between mast cells and endothelial cells in the presence of bacterial toxins in chronic/sub-clinical infections induce persistent vascular inflammation. We have shown that mast cell proteases and histamine induce endothelial inflammatory responses that are synergistically amplified by bacterial toxins. Mast cells have been shown to exacerbate vascular changes in normal states as well as in chronic or subclinical infections, particularly among cigarette smokers. Furthermore, a potential role of mast cells in SARS-CoV-2-induced dysfunction of the capillary-alveolar interface adds to the growing understanding of mast cells in viral infections. The interaction between mast cells and microglial cells in the brain further highlights their significance in neuroinflammation. This review highlights the significant role of mast cells as the interface that acts as sensor and early responder through interactions with cells in systemic organs and the nervous system.
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Affiliation(s)
- Kottarappat N. Dileepan
- Division of Allergy, Clinical Immunology and Rheumatology, Department of Medicine, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Vineesh V. Raveendran
- Division of Allergy, Clinical Immunology and Rheumatology, Department of Medicine, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Rishi Sharma
- Department of Medicine, School of Medicine, University of Missouri, Kansas City, MO, United States
| | - Harita Abraham
- Division of Allergy, Clinical Immunology and Rheumatology, Department of Medicine, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Rajat Barua
- Cardiology Section, Kansas City Veterans Affairs Medical Center, Kansas City, MO, United States
| | - Vikas Singh
- Neurology Section, Kansas City Veterans Affairs Medical Center, Kansas City, MO, United States
| | - Ram Sharma
- Research and Development Service, Kansas City Veterans Affairs Medical Center, Kansas City, MO, United States
| | - Mukut Sharma
- Research and Development Service, Kansas City Veterans Affairs Medical Center, Kansas City, MO, United States
- Midwest Veterans’ Biomedical Research Foundation (MVBRF), Kansas City VA Medical Center, Kansas, MO, United States
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7
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Gao J, Zhang Z, Yan JY, Ge YX, Gao Y. Inflammation and coagulation abnormalities via the activation of the HMGB1‑RAGE/NF‑κB and F2/Rho pathways in lung injury induced by acute hypoxia. Int J Mol Med 2023; 52:67. [PMID: 37350396 PMCID: PMC10555482 DOI: 10.3892/ijmm.2023.5270] [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: 03/02/2023] [Accepted: 05/15/2023] [Indexed: 06/24/2023] Open
Abstract
High‑altitude acute hypoxia is commonly associated with respiratory cardiovascular diseases. The inability to adapt to acute hypoxia may lead to cardiovascular dysfunction, lung injury and even death. Therefore, understanding the molecular basis of the adaptation to high‑altitude acute hypoxia may reveal novel therapeutic approaches with which to counteract the detrimental consequences of hypoxia. In the present study, a high‑altitude environment was simulated in a rat model in order to investigate the role of the high mobility group protein‑1 (HMGB1)/receptor for advanced glycation end products (RAGE)/NF‑κB and F2/Rho signaling pathways in lung injury induced by acute hypoxia. It was found that acute hypoxia caused inflammation through the HMGB1/RAGE/NF‑κB pathway and coagulation dysfunction through the F2/Rho pathway, both of which may be key processes in acute hypoxia‑induced lung injury. The present study provides new insight into the molecular basis of lung injury induced by acute hypoxia. The simultaneous activation of the HMGB1/RAGE/NF‑κB and F2/Rho signaling pathways plays a critical role in hypoxia‑induced inflammatory responses and coagulation abnormalities, and provides a theoretical basis for the development of potential therapeutic strategies.
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Affiliation(s)
| | | | - Jia-Yi Yan
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, P.R. China
| | - Yun-Xuan Ge
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, P.R. China
| | - Yue Gao
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, P.R. China
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Kupari J, Ernfors P. Molecular taxonomy of nociceptors and pruriceptors. Pain 2023; 164:1245-1257. [PMID: 36718807 PMCID: PMC10184562 DOI: 10.1097/j.pain.0000000000002831] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/10/2022] [Accepted: 11/21/2022] [Indexed: 02/01/2023]
Affiliation(s)
- Jussi Kupari
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Patrik Ernfors
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
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9
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Bagang N, Gupta K, Singh G, Kanuri SH, Mehan S. Protease-activated receptors in kidney diseases: A comprehensive review of pathological roles, therapeutic outcomes and challenges. Chem Biol Interact 2023; 377:110470. [PMID: 37011708 DOI: 10.1016/j.cbi.2023.110470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/21/2023] [Accepted: 03/31/2023] [Indexed: 04/03/2023]
Abstract
Studies have demonstrated that protease-activated receptors (PARs) with four subtypes (PAR1-4) are mainly expressed in the renal epithelial, endothelial, and podocyte cells. Some endogenous and urinary proteases, namely thrombin, trypsin, urokinase, and kallikrein released during diseased conditions, are responsible for activating different subtypes of PARs. Each PAR receptor subtype is involved in kidney disease of distinct aetiology. PAR1 and PAR2 have shown differential therapeutic outcomes in rodent models of type-1 and type-2 diabetic kidney diseases due to the distinct etiological basis of each disease type, however such findings need to be confirmed in other diabetic renal injury models. PAR1 and PAR2 blockers have been observed to abolish drug-induced nephrotoxicity in rodents by suppressing tubular inflammation and fibrosis and preventing mitochondrial dysfunction. Notably, PAR2 inhibition improved autophagy and prevented fibrosis, inflammation, and remodeling in the urethral obstruction model. Only the PAR1/4 subtypes have emerged as a therapeutic target for treating experimentally induced nephrotic syndrome, where their respective antibodies attenuated the podocyte apoptosis induced upon thrombin activation. Strikingly PAR2 and PAR4 subtypes involvement has been tested in sepsis-induced acute kidney injury (AKI) and renal ischemia-reperfusion injury models. Thus, more studies are required to delineate the role of other subtypes in the sepsis-AKI model. Evidence suggests that PARs regulate oxidative, inflammatory stress, immune cell activation, fibrosis, autophagic flux, and apoptosis during kidney diseases.
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10
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Atiakshin D, Patsap O, Kostin A, Mikhalyova L, Buchwalow I, Tiemann M. Mast Cell Tryptase and Carboxypeptidase A3 in the Formation of Ovarian Endometrioid Cysts. Int J Mol Sci 2023; 24:ijms24076498. [PMID: 37047472 PMCID: PMC10095096 DOI: 10.3390/ijms24076498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/24/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
The mechanisms of ovarian endometrioid cyst formation, or cystic ovarian endometriosis, still remain to be elucidated. To address this issue, we analyzed the involvement of mast cell (MC) tryptase and carboxypeptidase A3 (CPA3) in the development of endometriomas. It was found that the formation of endometrioid cysts was accompanied by an increased MC population in the ovarian medulla, as well as by an MC appearance in the cortical substance. The formation of MC subpopulations was associated with endometrioma wall structures. An active, targeted secretion of tryptase and CPA3 to the epithelium of endometrioid cysts, immunocompetent cells, and the cells of the cytogenic ovarian stroma was detected. The identification of specific proteases in the cell nuclei of the ovarian local tissue microenvironment suggests new mechanisms for the regulatory effects of MCs. The cytoplasmic outgrowths of MCs propagate in the structures of the stroma over a considerable distance; they offer new potentials for MC effects on the structures of the ovarian-specific tissue microenvironment under pathological conditions. Our findings indicate the potential roles of MC tryptase and CPA3 in the development of ovarian endometriomas and infer new perspectives on their uses as pharmacological targets in personalized medicine.
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Affiliation(s)
- Dmitri Atiakshin
- Research and Educational Resource Centre for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, Peoples’ Friendship University of Russia, 117198 Moscow, Russia
- Research Institute of Experimental Biology and Medicine, Burdenko Voronezh State Medical University, 394036 Voronezh, Russia
| | - Olga Patsap
- Research and Educational Resource Centre for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, Peoples’ Friendship University of Russia, 117198 Moscow, Russia
| | - Andrey Kostin
- Research and Educational Resource Centre for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, Peoples’ Friendship University of Russia, 117198 Moscow, Russia
| | | | - Igor Buchwalow
- Research and Educational Resource Centre for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, Peoples’ Friendship University of Russia, 117198 Moscow, Russia
- Institute for Hematopathology, 22547 Hamburg, Germany
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11
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Yakupu A, Zhang D, Guan H, Jiang M, Dong J, Niu Y, Tang J, Liu Y, Ma X, Lu S. Single-cell analysis reveals melanocytes may promote inflammation in chronic wounds through cathepsin G. Front Genet 2023; 14:1072995. [PMID: 36755572 PMCID: PMC9900029 DOI: 10.3389/fgene.2023.1072995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/09/2023] [Indexed: 01/24/2023] Open
Abstract
During acute wound (AW) healing, a series of proper communications will occur between different epidermal cells at precise temporal stages to restore the integrity of the skin. However, it is still unclear what variation happened in epidermal cell interaction in the chronic wound environment. To provide new insights into chronic wound healing, we reconstructed the variations in the epidermal cell-cell communication network that occur in chronic wound healing via single-cell RNA-seq (scRNA-seq) data analysis. We found that the intricate cellular and molecular interactions increased in pressure ulcer (PU) compared to AW, especially the PARs signaling pathways were significantly upregulated. It shows that the PARs signaling pathways' main source was melanocytes and the CTSG-F2RL1 ligand-receptor pairs were its main contributor. Cathepsin G (CatG or CTSG) is a serine protease mainly with trypsin- and chymotrypsin-like specificity. It is synthesized and secreted by some immune or non-immune cells. Whereas, it has not been reported that melanocytes can synthesize and secrete the CTSG. F2R Like Trypsin Receptor 1 (F2RL1) is a member of proteinase-activated receptors (PARs) that are irreversibly activated by proteolytic cleavage and its stimulation can promote inflammation and inflammatory cell infiltration. In this study, we found that melanocytes increased in pressure ulcers, melanocytes can synthesize and secrete the CTSG and may promote inflammation in chronic wounds through CTSG-F2RL1 pairs, which may be a novel potential target and a therapeutic strategy in the treatment of chronic wounds.
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Affiliation(s)
- Aobuliaximu Yakupu
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Di Zhang
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Haonan Guan
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Minfei Jiang
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jiaoyun Dong
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yiwen Niu
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jiajun Tang
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yingkai Liu
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xian Ma
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,*Correspondence: Xian Ma, ; Shuliang Lu,
| | - Shuliang Lu
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,*Correspondence: Xian Ma, ; Shuliang Lu,
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Shao C, Lu L. PAR2 Overexpression is Involved in the Occurrence of Hyperoxygen-Induced Bronchopulmonary Dysplasia in Rats. Fetal Pediatr Pathol 2023; 42:423-437. [PMID: 36657618 DOI: 10.1080/15513815.2023.2166799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Bronchopulmonary dysplasia is a chronic lung disease commonly seen in preterm infants. It is characterized by delayed development of the alveoli and lung fibrosis. Protease-activated receptor 2 (PAR2) is an inflammatory driver that plays a proinflammatory role mainly through the P38 MAPK/NF-κB signaling pathway. METHODS Newborn rat pups were kept under air or oxygen at >60% concentration. Lung tissues were collected at postnatal days (P) 1, 4, 7, and 10 to observe pathological changes and take measurements. RESULTS In the hyperoxic group, P4 and P7 rats showed delayed alveolar development, septal thickening, and disturbances in alveolar structure.PAR2, P38 MAPK, NF-κB, and IL-18 expression at P4, P7, and P10 was significantly higher than in the air group. CONCLUSION PAR2 is involved in lung injury induced by persistent hyperoxia. Activated PAR2 promotes IL-18 overexpression through the P38 MAPK/NF-κB signaling pathway, which may be an important mechanism of PAR2-mediated lung injury in bronchopulmonary dysplasia.
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Affiliation(s)
- Chunyan Shao
- Department of Pediatrics, Chengdu Medical College, Chengdu, China
| | - Liqun Lu
- Department of Pediatrics, The First Affiliated Hospital of Chengdu Medical College, Chengdu Medical College, Chengdu, China
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Wilkinson H, Leonard H, Robson MG, Smith R, Tam E, McVey JH, Kirckhofer D, Chen D, Dorling A. Manipulation of tissue factor-mediated basal PAR-2 signalling on macrophages determines sensitivity for IFNγ responsiveness and significantly modifies the phenotype of murine DTH. Front Immunol 2022; 13:999871. [PMID: 36172348 PMCID: PMC9510775 DOI: 10.3389/fimmu.2022.999871] [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: 07/21/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundTissue factor (TF) generates proteases that can signal through PAR-1 and PAR-2. We have previously demonstrated PAR-1 signalling primes innate myeloid cells to be exquisitely sensitive to interferon-gamma (IFNγ). In this work we explored how TF mediated PAR-2 signalling modulated responsiveness to IFNγ and investigated the interplay between PAR-1/-2 signalling on macrophages.MethodologyWe characterised how TF through PAR-2 influenced IFNγ sensitivity in vitro using PCR and flow cytometry. and how it influenced oxazolone-induced delayed type hypersensitivity (DTH) responses in vivo. We investigated how basal signalling through PAR-2 influenced PAR-1 signalling using a combination of TF-inhibitors and PAR-1 &-2 agonists and antagonists. Finally, we investigated whether this system could be targeted therapeutically using 3-mercaptopropionyl-F-Cha-Cha-RKPNDK (3-MP), which has actions on both PAR-1 and -2.ResultsTF delivered a basal signal through PAR-2 that upregulated SOCS3 expression and blunted M1 polarisation after IFNγ stimulation, opposing the priming achieved by signalling through PAR-1. PAR-1 and -2 agonists or antagonists could be used in combination to modify this basal signal in vitro and in vivo. 3-MP, by virtue of its PAR-2 agonist properties was superior to agents with only PAR-1 antagonist properties at reducing M1 polarisation induced by IFNγ and suppressing DTH. Tethering a myristoyl electrostatic switch almost completely abolished the DTH response.ConclusionsTF-mediated signalling through PARs-1 and -2 act in a homeostatic way to determine how myeloid cells respond to IFNγ. 3-MP, an agent that simultaneously inhibits PAR-1 whilst delivering a PAR-2 signal, can almost completely abolish immune responses dependent on M1 polarisation, particularly if potency is enhanced by targeting to cell membranes; this has potential therapeutic potential in multiple diseases.
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Affiliation(s)
- Hannah Wilkinson
- Department of Inflammation Biology, School of Immunology & Microbial Sciences, King’s College London, Guy’s Hospital, London, United Kingdom
- *Correspondence: Anthony Dorling, ; Hannah Wilkinson,
| | - Hugh Leonard
- Department of Inflammation Biology, School of Immunology & Microbial Sciences, King’s College London, Guy’s Hospital, London, United Kingdom
| | - Michael G. Robson
- Department of Inflammation Biology, School of Immunology & Microbial Sciences, King’s College London, Guy’s Hospital, London, United Kingdom
| | - Richard Smith
- Department of Inflammation Biology, School of Immunology & Microbial Sciences, King’s College London, Guy’s Hospital, London, United Kingdom
| | - ElLi Tam
- Department of Inflammation Biology, School of Immunology & Microbial Sciences, King’s College London, Guy’s Hospital, London, United Kingdom
| | - John H. McVey
- School of Bioscience & Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Daniel Kirckhofer
- Department of Early Discovery Biochemistry, Genentech Inc., South San Francisco, CA, United States
| | - Daxin Chen
- Department of Inflammation Biology, School of Immunology & Microbial Sciences, King’s College London, Guy’s Hospital, London, United Kingdom
| | - Anthony Dorling
- Department of Inflammation Biology, School of Immunology & Microbial Sciences, King’s College London, Guy’s Hospital, London, United Kingdom
- *Correspondence: Anthony Dorling, ; Hannah Wilkinson,
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14
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Abstract
It has been 30 years since the first member of the protease-activated receptor (PAR) family was discovered. This was followed by the discovery of three other receptors, including PAR2. PAR2 is a G protein-coupled receptor activated by trypsin site-specific proteolysis. The process starts with serine proteases acting between arginine and serine, creating an N-terminus that functions as a tethered ligand that binds, after a conformational change, to the second extracellular loop of the receptor, leading to activation of G-proteins. The physiological and pathological functions of this ubiquitous receptor are still elusive. This review focuses on PAR2 activation and its distribution under physiological and pathological conditions, with a particular focus on the pancreas, a significant producer of trypsin, which is the prototype activator of the receptor. The role in acute or chronic pancreatitis, pancreatic cancer, and diabetes mellitus will be highlighted.
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Affiliation(s)
- Petr SUHAJ
- Department of Pathology and Molecular Medicine, Thomayer University Hospital, Prague, Czech Republic,Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Tomas OLEJAR
- Department of Pathology and Molecular Medicine, Thomayer University Hospital, Prague, Czech Republic,Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Radoslav MATEJ
- Department of Pathology and Molecular Medicine, Thomayer University Hospital, Prague, Czech Republic,Department of Pathology, University Hospital Kralovske Vinohrady, Prague, Czech Republic,Third Faculty of Medicine, Charles University, Prague, Czech Republic
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15
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Abstract
INTRODUCTION Platelets play a key role in arterial thrombosis and antiplatelet therapy is pivotal in the treatment of cardiovascular disease. Current antiplatelet drugs target different pathways of platelet activation and show specific pharmacodynamic and pharmacokinetic characteristics, implicating clinically relevant drug-drug interactions. AREAS COVERED This article reviews the role of platelets in hemostasis and cardiovascular thrombosis, and discusses the key pharmacodynamics, drug-drug interactions and reversal strategies of clinically used antiplatelet drugs. EXPERT OPINION Antiplatelet therapies target distinct pathways of platelet activation: thromboxane A2 synthesis, adenosine diphosphate-mediated signaling, integrin αIIbβ3 (GPIIb/IIIa), thrombin-mediated platelet activation via the PAR1 receptor and phosphodiesterases. Key clinical drug-drug interactions of antiplatelet agents involve acetylsalicylic acid - ibuprofen, clopidogrel - omeprazole, and morphine - oral P2Y12 inhibitors, all of which lead to an attenuated antiplatelet effect. Platelet function and genetic testing and the use of scores (ARC-HBR, PRECISE-DAPT, ESC ischemic risk definition) may contribute to a more tailored antiplatelet therapy. High on-treatment platelet reactivity presents a key problem in the acute management of ST-elevation myocardial infarction (STEMI). A treatment strategy involving early initiation of an intravenous antiplatelet agent may be able to bridge the gap of insufficient platelet inhibition in high ischemic risk patients with STEMI.
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Affiliation(s)
- Georg Gelbenegger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Bernd Jilma
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
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16
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Zhao X, Zhu L, Yin Q, Xu Z, Jia Q, Yang R, He K. F2RL3 Methylation in the Peripheral Blood as a Potential Marker for the Detection of Coronary Heart Disease: A Case-Control Study. Front Genet 2022; 13:833923. [PMID: 35419024 PMCID: PMC8996303 DOI: 10.3389/fgene.2022.833923] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 02/14/2022] [Indexed: 12/24/2022] Open
Abstract
Background and Aims: Previous work has shown the association between blood-based methylation of coagulation factor II receptor-like 3 gene (F2RL3) and cardiovascular mortality in Caucasians. However, the diagnostic value of F2RL3 methylation for CHD is still unknown. The aim of our study was to evaluate the association between blood-based F2RL3 methylation and the risk of CHD in the Chinese population. Methods: The methylation level of F2RL3 was quantified by mass spectrometry in a case-control study with 180 CHD cases and 184 controls. The association between F2RL3 methylation intensity and CHD was assessed by logistic regression models, controlling confounding factors. Results: The hypomethylation in F2RL3_A amplicon was significantly associated with CHD (odds ratio (ORs) per -10% methylation: 1.22–1.42, p < 0.035 for six out of seven CpG loci). Specifically, this significant association was observed in elderly CHD patients (≥60 years), myocardial infarction (MI) patients, heart failure patients and the patients with minor to medium cardiac function impairment (NYHA Ⅰ&Ⅱ CHD cases) (ORs per -10% methylation: 1.35–1.58, 1.32–2.00, 1.29–1.43, 1.25–1.44; p < 0.024, 0.033, 0.035, 0.025, respectively). However, F2RL3_B CpG sites showed no or very weak association with CHD. The combination of F2RL3_A_CpG_1 and F2RL3_A_CpG_3 methylation levels could efficiently discriminate CHD, MI, heart failure, NYHA I&II CHD, and elderly CHD patients from controls (area under curve (AUC) = 0.75, 0.79, 0.75, 0.76, and 0.82, respectively). Conclusion: We propose blood-based F2RL3 methylation as a potential biomarker for CHD, especially for people with older age or with the status of MI. The combination of F2RL3 methylation and conventional risk factors might be an approach to evaluate CHD at early stage.
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Affiliation(s)
- Xiaojing Zhao
- Military Translational Medicine Lab, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China.,Beijing Key Laboratory of Chronic Heart Failure Precision Medicine, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
| | - Liya Zhu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Qiming Yin
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Zhenguo Xu
- The First Medical Center, Chinese PLA General Hospital, Beijing, China.,The Medical School of Chinese PLA, Beijing, China
| | - Qian Jia
- Military Translational Medicine Lab, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China.,Beijing Key Laboratory of Chronic Heart Failure Precision Medicine, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
| | - Rongxi Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Kunlun He
- Military Translational Medicine Lab, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China.,Beijing Key Laboratory of Chronic Heart Failure Precision Medicine, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
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17
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Hollenberg MD, Epstein M. The innate immune response, microenvironment proteinases, and the COVID-19 pandemic: pathophysiologic mechanisms and emerging therapeutic targets. Kidney Int Suppl (2011) 2022; 12:48-62. [PMID: 35316977 PMCID: PMC8931295 DOI: 10.1016/j.kisu.2021.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/19/2021] [Accepted: 12/11/2021] [Indexed: 12/13/2022] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic, causing considerable mortality and morbidity worldwide, has fully engaged the biomedical community in attempts to elucidate the pathophysiology of COVID-19 and develop robust therapeutic strategies. To this end, the predominant research focus has been on the adaptive immune response to COVID-19 infections stimulated by mRNA and protein vaccines and on the duration and persistence of immune protection. In contrast, the role of the innate immune response to the viral challenge has been underrepresented. This overview focuses on the innate immune response to COVID-19 infection, with an emphasis on the roles of extracellular proteases in the tissue microenvironment. Proteinase-mediated signaling caused by enzymes in the extracellular microenvironment occurs upstream of the increased production of inflammatory cytokines that mediate COVID-19 pathology. These enzymes include the coagulation cascade, kinin-generating plasma kallikrein, and the complement system, as well as angiotensin-generating proteinases of the renin–angiotensin system. Furthermore, in the context of several articles in this Supplement elucidating and detailing the trajectory of diverse profibrotic pathways, we extrapolate these insights to explore how fibrosis and profibrotic pathways participate importantly in the pathogenesis of COVID-19. We propose that the lessons garnered from understanding the roles of microenvironment proteinases in triggering the innate immune response to COVID-19 pathology will identify potential therapeutic targets and inform approaches to the clinical management of COVID-19. Furthermore, the information may also provide a template for understanding the determinants of COVID-19–induced tissue fibrosis that may follow resolution of acute infection (so-called “long COVID”), which represents a major new challenge to our healthcare systems.
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Affiliation(s)
- Morley D. Hollenberg
- Inflammation Research Network–Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Physiology & Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Murray Epstein
- Division of Nephrology and Hypertension, University of Miami Miller School of Medicine, Miami, Florida, USA
- Correspondence: Murray Epstein, Division of Nephrology and Hypertension, P.O. Box 016960 (R-126), Miami, Florida 33101 USA.
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18
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Steinhoff M, Ahmad F, Pandey A, Datsi A, AlHammadi A, Al-Khawaga S, Al-Malki A, Meng J, Alam M, Buddenkotte J. Neuro-immune communication regulating pruritus in atopic dermatitis. J Allergy Clin Immunol 2022; 149:1875-1898. [PMID: 35337846 DOI: 10.1016/j.jaci.2022.03.010] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 02/13/2022] [Accepted: 03/10/2022] [Indexed: 11/26/2022]
Abstract
Atopic dermatitis (AD) is a common, chronic-relapsing inflammatory skin disease with significant disease burden. Genetic and environmental trigger factors contribute to AD, activating two of our largest organs, the nervous and immune system. Dysregulation of neuro-immune circuits plays a key role in the pathophysiology of AD causing inflammation, pruritus, pain, and barrier dysfunction. Sensory nerves can be activated by environmental or endogenous trigger factors transmitting itch stimuli to the brain. Upon stimulation, sensory nerve endings also release neuromediators into the skin contributing again to inflammation, barrier dysfunction and itch. Additionally, dysfunctional peripheral and central neuronal structures contribute to neuroinflammation, sensitization, nerve elongation, neuropathic itch, thus chronification and therapy-resistance. Consequently, neuro-immune circuits in skin and central nervous system may be targets to treat pruritus in AD. Cytokines, chemokines, proteases, lipids, opioids, ions excite/sensitize sensory nerve endings not only induce itch but further aggravate/perpetuate inflammation, skin barrier disruption, and pruritus. Thus, targeted therapies for neuro-immune circuits as well as pathway inhibitors (e.g., kinase inhibitors) may be beneficial to control pruritus in AD either in systemic and/or topical form. Understanding neuro-immune circuits and neuronal signaling will optimize our approach to control all pathological mechanisms in AD, inflammation, barrier dysfunction and pruritus.
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Affiliation(s)
- Martin Steinhoff
- Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar; Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Department of Dermatology, Weill Cornell Medicine-Qatar, Doha, Qatar; Qatar University, College of Medicine, Doha, Qatar; Department of Dermatology, Weill Cornell Medicine, New York, USA.
| | - Fareed Ahmad
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Atul Pandey
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Angeliki Datsi
- Institute for Transplantational Diagnostics and Cell Therapeutics, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Ayda AlHammadi
- Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar
| | - Sara Al-Khawaga
- Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar
| | - Aysha Al-Malki
- Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar
| | - Jianghui Meng
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
| | - Majid Alam
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Joerg Buddenkotte
- Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar; Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
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19
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Protease-activated receptor 2 enhances innate and inflammatory mechanisms induced by lipopolysaccharide in macrophages from C57BL/6 mice. Inflamm Res 2022; 71:439-448. [PMID: 35274151 DOI: 10.1007/s00011-022-01551-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 02/11/2022] [Accepted: 02/16/2022] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE This study was conducted to investigate the effects of the synthetic PAR2 agonist peptide (PAR2-AP) SLIGRL-NH2 on LPS-induced inflammatory mechanisms in peritoneal macrophages. METHODS Peritoneal macrophages obtained from C57BL/6 mice were incubated with PAR2-AP and/or LPS, and the phagocytosis of zymosan fluorescein isothiocyanate (FITC) particles; nitric oxide (NO), reactive oxygen species (ROS), and cytokine production; and inducible NO synthase (iNOS) expression in macrophages co-cultured with PAR-2-AP/LPS were evaluated. RESULTS Co-incubation of macrophages with PAR2AP (30 µM)/LPS (100 ng/mL) enhanced LPS-induced phagocytosis; production of NO, ROS, and the pro-inflammatory cytokines interleukin (IL)-1β, tumour necrosis factor (TNF)-α, IL-6, and C-C motif chemokine ligand (CCL)2; and iNOS expression and impaired the release of the anti-inflammatory cytokine IL-10 after 4 h of co-stimulation. In addition, PAR2AP increased the LPS-induced translocation of the p65 subunit of the pro-inflammatory transcription factor nuclear factor kappa B (NF-κB) and reduced the expression of inhibitor of NF-κB. CONCLUSION This study provides evidence of a role for PAR2 in macrophage response triggered by LPS enhancing the phagocytic activity and NO, ROS, and cytokine production, resulting in the initial and adequate macrophage response required for their innate response mechanisms.
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Neutrophil Cathepsin G Enhances Thrombogenicity of Mildly Injured Arteries via ADP-Mediated Platelet Sensitization. Int J Mol Sci 2022; 23:ijms23020744. [PMID: 35054930 PMCID: PMC8775596 DOI: 10.3390/ijms23020744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/05/2022] [Accepted: 01/07/2022] [Indexed: 11/26/2022] Open
Abstract
Inhalation of particulate matter in polluted air causes direct, size-restricted passage in the circulation and pronounced lung inflammation, provoking platelet activation and (non)-fatal cardiovascular complications. To determine potency and mechanism of platelet sensitization via neutrophil enzymes, we performed in vitro aggregation studies in washed human platelets and in murine and human blood, in the presence of elastase, cathepsin G and regular platelet agonists, present in damaged arteries. The impact of both enzymes on in vivo thrombogenicity was studied in the same thrombosis mouse model, previously having demonstrated that neutrophil activation enhances peripheral thrombogenicity. At 0.05 U/mL, cathepsin G activated washed human platelets via PAR1, whereas at 0.35 U/mL, aggregation occurred via PAR4. In Swiss mouse platelet-rich plasma no aggregation occurred by cathepsin G at 0.4 U/mL. In human and murine blood, aggregations by 0.05–0.1 U/mL cathepsin G were similar and not PAR-mediated, but platelet aggregation was inhibited by ADP antagonists, advocating cathepsin G-released ADP in blood as the true agonist of sustained platelet activation. In the mouse thrombosis model, cathepsin G and elastase amplified mild thrombogenicity at blood concentrations that activated platelets in vitro. This study shows that cathepsin G and elastase secreted in the circulation during mild air pollution-induced lung inflammation lyse red blood cell membrane proteins, leading to ADP-leakage into plasma, sensitizing platelets and amplifying their contribution to cardiovascular complications of ambient particle inhalation.
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21
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Matos NAD, Reis DCD, Rocha LK, Mattos MSD, Cassali GD, Russo RC, Perez ADC, Klein A. Pharmacological blockade of protease-Activated Receptor 2 improves airway remodeling and lung inflammation in experimental allergic asthma. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e201089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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22
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Cruz-Silva I, Nunes VA, Rydlewski M, Gozzo AJ, Praxedes-Garcia P, Ferraz Carbonel AA, Tanaka AS, Araújo MDS. Disclosing the involvement of proteases in an eczema murine animal model: Perspectives for protease inhibitor-based therapies. Biochimie 2021; 194:1-12. [PMID: 34896570 DOI: 10.1016/j.biochi.2021.12.003] [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: 07/23/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 11/25/2022]
Abstract
Eczema is a skin condition characterized by itchy and inflammatory patches. The accumulation of neutrophils and the imbalance between enzymes and their inhibitors appears to be related to this condition. We proposed a neutrophil elastase (NE)-based eczema model in mice in order to verify histopathological features as well as the expression and activity of proteases and inhibitors. Mice skins were topically administered with human NE (0-2 pmol/cm2) for 24-168 h. It was observed thickening of epidermis, parakeratosis, spongiosis and leukocyte infiltration. Also, NE-treated skins presented high activity of epidermal kallikreins 5 and 7, and cathepsin B on synthetic substrates, and expression evaluated by RT-qPCR. The proteolytic activity was inhibited by soybean trypsin inhibitor, CA074 and Caesalpinia echinata kallikrein inhibitor (CeKI). The topic application of CeKI reversed eczema phenotype in NE-treated skins. Elafin expression was shown to be increased in NE-treated skins. These results suggest that the NE may trigger morphological and biochemical changes in skin similar to those observed in eczematous diseases. In addition to the establishment of this in vivo model, this work opens perspectives for the use of protease inhibitor-based drugs for the management of this skin condition.
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Affiliation(s)
- Ilana Cruz-Silva
- Department of Biochemistry, Universidade Federal de São Paulo, SP, Brazil; Centro Universitário São Camilo, SP, Brazil
| | - Viviane Abreu Nunes
- Laboratory of Skin Physiology and Tissue Bioengineering, School of Arts, Sciences and Humanities, Universidade de São Paulo, SP, Brazil.
| | - Mariana Rydlewski
- Department of Biochemistry, Universidade Federal de São Paulo, SP, Brazil
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Fang X, Li M, Zhang W, Li J, Zhu T. Thrombin induces pro-inflammatory and anti-inflammatory cytokines secretion from human mast cell line (HMC-1) via protease-activated receptors. Mol Immunol 2021; 141:60-69. [PMID: 34808483 DOI: 10.1016/j.molimm.2021.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 10/24/2021] [Accepted: 11/15/2021] [Indexed: 02/05/2023]
Abstract
Thrombin-induced mast cell activation represents cross-talk between coagulation and inflammation. However, there is still controversy concerning the pro- or anti-inflammatory effects mast cells have in response to thrombin signaling. Human mast cell HMC-1 was incubated with 0.2 U/mL thrombin. Cells and supernatants were collected. Production of pro- and anti-inflammatory mediators was determined by quantitative PCR (qPCR) and enzyme-linked immunosorbent assay (ELISA). Expression of proteinase-activated receptor-1 (PAR1) and -4 (PAR4) mRNA in HMC-1 cells was analyzed by qPCR. Activation of mitogen-activated protein kinases (MAPKs) was measured by immunoblotting. Furthermore, the impact of PAR1 inhibitor (SCH79797) and agonist (TFLLR-NH2), PAR4 inhibitor (BMS986120) and agonist (AYPGKF-NH2), and MAPK inhibitors (SB203580, PD98059, and SP600125) on the production of mediators was evaluated using qPCR and ELISA. Thrombin exposure increased pro- and anti-inflammatory mediators, expression of PAR1 and PAR4 mRNA, and phosphorylation of JNK, p38, and ERK1/2 MAPKs in HMC-1 cells. SCH79797, BMS986120, and MAPK inhibitors (SB203580, PD98059, and SP600125) were inhibited, while TFLLR-NH2 and AYPGKF-NH2 promoted pro- and anti-inflammatory cytokines in this process. HMC-1 produces pro- and anti-inflammatory cytokines after thrombin incubation, namely PAR1 and PAR4. Alongside HMC-1, MAPK signaling pathways are involved in the production of these mediators. The mast cells showed dual activation after thrombin stimulation.
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Affiliation(s)
- Xiaobin Fang
- Department of Anesthesiology, West China Hospital, Sichuan University & The Research Unit of West China (2018RU012), Chinese Academy of Medical Science, Chengdu, Sichuan 610041, China.
| | - Mengmeng Li
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, 610041, China.
| | - Weiyi Zhang
- Department of Anesthesiology, West China Hospital, Sichuan University & The Research Unit of West China (2018RU012), Chinese Academy of Medical Science, Chengdu, Sichuan 610041, China.
| | - Jingyi Li
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, 610041, China.
| | - Tao Zhu
- Department of Anesthesiology, West China Hospital, Sichuan University & The Research Unit of West China (2018RU012), Chinese Academy of Medical Science, Chengdu, Sichuan 610041, China.
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24
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Chen H, Smith M, Herz J, Li T, Hasley R, Le Saout C, Zhu Z, Cheng J, Gronda A, Martina JA, Irusta PM, Karpova T, McGavern DB, Catalfamo M. The role of protease-activated receptor 1 signaling in CD8 T cell effector functions. iScience 2021; 24:103387. [PMID: 34841225 PMCID: PMC8605340 DOI: 10.1016/j.isci.2021.103387] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 09/28/2021] [Accepted: 10/28/2021] [Indexed: 12/15/2022] Open
Abstract
CD8 T cells are essential for adaptive immunity against viral infections. Protease activated receptor 1 (PAR1) is expressed by CD8 T cells; however, its role in T cell effector function is not well defined. Here we show that in human CD8 T cells, PAR1 stimulation accelerates calcium mobilization. Furthermore, PAR1 is involved in cytotoxic T cell function by facilitating granule trafficking via actin polymerization and repositioning of the microtubule organizing center (MTOC) toward the immunological synapse. In vivo, PAR1−/− mice have reduced cytokine-producing T cells in response to a lymphocytic choriomeningitis virus (LCMV) infection and fail to efficiently control the virus. Specific deletion of PAR1 in LCMV GP33-specific CD8 T cells results in reduced expansion and diminished effector function. These data demonstrate that PAR1 plays a role in T cell activation and function, and this pathway could represent a new therapeutic strategy to modulate CD8 T cell effector function. PAR1 signaling in human CD8 T cells accelerates TCR-induced calcium mobilization PAR1 participates in the repositioning of the MTOC at the immunological synapse PAR1 facilitates polarized secretion of cytotoxic granules at the immunological synapse PAR1−/− Gp33-specific CD8 T cells show reduced expansion and effector function
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Affiliation(s)
- Hui Chen
- Department of Microbiology and Immunology, Georgetown University School of Medicine, Washington, DC, USA.,Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Mindy Smith
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Jasmin Herz
- Viral Immunology and Intravital Imaging Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Tong Li
- Department of Microbiology and Immunology, Georgetown University School of Medicine, Washington, DC, USA
| | - Rebecca Hasley
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Cecile Le Saout
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Ziang Zhu
- Department of Microbiology and Immunology, Georgetown University School of Medicine, Washington, DC, USA
| | - Jie Cheng
- Department of Microbiology and Immunology, Georgetown University School of Medicine, Washington, DC, USA
| | - Andres Gronda
- Department of Human Science, Georgetown University, Washington, DC, USA
| | - José A Martina
- Cell and Developmental Biology Center, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Pablo M Irusta
- Department of Human Science, Georgetown University, Washington, DC, USA
| | - Tatiana Karpova
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Dorian B McGavern
- Viral Immunology and Intravital Imaging Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Marta Catalfamo
- Department of Microbiology and Immunology, Georgetown University School of Medicine, Washington, DC, USA
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25
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Stadnicki A, Stadnicka I. Venous and arterial thromboembolism in patients with inflammatory bowel diseases. World J Gastroenterol 2021; 27:6757-6774. [PMID: 34790006 PMCID: PMC8567469 DOI: 10.3748/wjg.v27.i40.6757] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/22/2021] [Accepted: 08/19/2021] [Indexed: 02/06/2023] Open
Abstract
The risk of thromboembolism (TE) is increased in patients with inflammatory bowel disease (IBD), mainly due to an increased risk of venous TE (VTE). The risk of arterial TE (ATE) is less pronounced, but an increased risk of cardiovascular diseases needs to be addressed in IBD patients. IBD predisposes to arterial and venous thrombosis through similar prothrombotic mechanisms, including triggering activation of coagulation, in part mediated by impairment of the intestinal barrier and released bacterial components. VTE in IBD has clinical specificities, i.e., an earlier first episode in life, high rates during both active and remission stages, higher recurrence rates, and poor prognosis. The increased likelihood of VTE in IBD patients may be related to surgery, the use of medications such as corticosteroids or tofacitinib, whereas infliximab is antithrombotic. Long-term complications of VTE can include post-thrombotic syndrome and high recurrence rate during post-hospital discharge. A global clot lysis assay may be useful in identifying patients with IBD who are at risk for TE. Many VTEs occur in IBD outpatients; therefore, outpatient prophylaxis in high-risk patients is recommended. It is crucial to continue focusing on prevention and adequate treatment of VTE in patients with IBD.
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Affiliation(s)
- Antoni Stadnicki
- Department of Physiology, Faculty of Medicine, University of Technology, Katowice 41-209, Poland
| | - Izabela Stadnicka
- Department of Molecular Medicine, Medical University of Silesia, Faculty of Pharmacy, Sosnowiec 41-200, Poland
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26
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Subramaniam S, Ruf W, Bosmann M. Advocacy of targeting protease-activated receptors in severe coronavirus disease 2019. Br J Pharmacol 2021; 179:2086-2099. [PMID: 34235728 PMCID: PMC8794588 DOI: 10.1111/bph.15587] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/19/2021] [Accepted: 05/27/2021] [Indexed: 12/23/2022] Open
Abstract
Identifying drug targets mitigating vascular dysfunction, thrombo-inflammation and thromboembolic complications in COVID-19 is essential. COVID-19 coagulopathy differs from sepsis coagulopathy. Factors that drive severe lung pathology and coagulation abnormalities in COVID-19 are not understood. Protein-protein interaction studies indicate that the tagged viral bait protein ORF9c directly interacts with PAR2, which modulates host cell IFN and inflammatory cytokines. In addition to direct interaction of SARS-CoV-2 viral protein with PARs, we speculate that activation of PAR by proteases plays a role in COVID-19-induced hyperinflammation. In COVID-19-associated coagulopathy elevated levels of activated coagulation proteases may cleave PARs in association with TMPRSS2. PARs activation enhances the release of cytokines, chemokines and tissue factor expression to propagate IFN-dependent inflammation, leukocyte-endothelial interaction, vascular permeability and coagulation responses. This hypothesis, corroborated by in vitro findings and emerging clinical evidence, will focus targeted studies of PAR1/2 blockers as adjuvant drugs against cytokine release syndrome and COVID-19-associated coagulopathy.
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Affiliation(s)
- Saravanan Subramaniam
- Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Wolfram Ruf
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany.,Department of Immunology and Microbiology, Scripps Research, La Jolla, California, USA
| | - Markus Bosmann
- Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA.,Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
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27
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Meng J, Li Y, Fischer MJM, Steinhoff M, Chen W, Wang J. Th2 Modulation of Transient Receptor Potential Channels: An Unmet Therapeutic Intervention for Atopic Dermatitis. Front Immunol 2021; 12:696784. [PMID: 34276687 PMCID: PMC8278285 DOI: 10.3389/fimmu.2021.696784] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 06/15/2021] [Indexed: 12/12/2022] Open
Abstract
Atopic dermatitis (AD) is a multifaceted, chronic relapsing inflammatory skin disease that affects people of all ages. It is characterized by chronic eczema, constant pruritus, and severe discomfort. AD often progresses from mild annoyance to intractable pruritic inflammatory lesions associated with exacerbated skin sensitivity. The T helper-2 (Th2) response is mainly linked to the acute and subacute phase, whereas Th1 response has been associated in addition with the chronic phase. IL-17, IL-22, TSLP, and IL-31 also play a role in AD. Transient receptor potential (TRP) cation channels play a significant role in neuroinflammation, itch and pain, indicating neuroimmune circuits in AD. However, the Th2-driven cutaneous sensitization of TRP channels is underappreciated. Emerging findings suggest that critical Th2-related cytokines cause potentiation of TRP channels, thereby exaggerating inflammation and itch sensation. Evidence involves the following: (i) IL-13 enhances TRPV1 and TRPA1 transcription levels; (ii) IL-31 sensitizes TRPV1 via transcriptional and channel modulation, and indirectly modulates TRPV3 in keratinocytes; (iii) The Th2-cytokine TSLP increases TRPA1 synthesis in sensory neurons. These changes could be further enhanced by other Th2 cytokines, including IL-4, IL-25, and IL-33, which are inducers for IL-13, IL-31, or TSLP in skin. Taken together, this review highlights that Th2 cytokines potentiate TRP channels through diverse mechanisms under different inflammatory and pruritic conditions, and link this effect to distinct signaling cascades in AD. This review strengthens the notion that interrupting Th2-driven modulation of TRP channels will inhibit transition from acute to chronic AD, thereby aiding the development of effective therapeutics and treatment optimization.
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Affiliation(s)
- Jianghui Meng
- School of Life Sciences, Henan University, Kaifeng, China.,National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
| | - Yanqing Li
- School of Life Sciences, Henan University, Kaifeng, China
| | - Michael J M Fischer
- Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Martin Steinhoff
- Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar.,Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar.,Department of Dermatology, Weill Cornell Medicine-Qatar, Doha, Qatar.,Qatar University, College of Medicine, Doha, Qatar.,Department of Dermatology, Weill Cornell Medicine, New York, NY, United States
| | - Weiwei Chen
- School of Life Sciences, Henan University, Kaifeng, China
| | - Jiafu Wang
- School of Life Sciences, Henan University, Kaifeng, China.,School of Biotechnology, Faculty of Science and Health, Dublin City University, Dublin, Ireland
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28
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Bone marrow derived mast cells injected into the osteoarthritic knee joints of mice induced by sodium monoiodoacetate enhanced spontaneous pain through activation of PAR2 and action of extracellular ATP. PLoS One 2021; 16:e0252590. [PMID: 34086763 PMCID: PMC8177436 DOI: 10.1371/journal.pone.0252590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 05/18/2021] [Indexed: 12/12/2022] Open
Abstract
Conditions that resemble osteoarthritis (OA) were produced by injection of sodium monoiodoacetate (MIA) into the knee joints of mice. Bone marrow derived mast cells (BMMCs) injected into the OA knee joints enhanced spontaneous pain. Since no spontaneous pain was observed when BMMCs were injected into the knee joints of control mice that had not been treated with MIA, BMMCs should be activated within the OA knee joints and release some pain-inducible factors. Protease activated receptor-2 (PAR2) antagonist (FSLLRY-NH2) almost abolished the pain-enhancing effects of BMMCs injected into the OA knee joints, suggesting that tryptase, a mast cell protease that is capable of activating PAR2, should be released from the injected BMMCs and enhance pain through activation of PAR2. When PAR2 agonist (SLIGKV-NH2) instead of BMMCs was injected into the OA knee joints, it was also enhanced pain. Apyrase, an ATP degrading enzyme, injected into the OA knee joints before BMMCs suppressed the pain enhanced by BMMCs. We showed that purinoceptors (P2X4 and P2X7) were expressed in BMMCs and that extracellular ATP stimulated the release of tryptase from BMMCs. These observations suggest that ATP may stimulate degranulation of BMMCs and thereby enhanced pain. BMMCs injected into the OA knee joints stimulated expression of IL-1β, IL-6, TNF-α, CCL2, and MMP9 genes in the infrapatellar fat pads, and PAR2 antagonist suppressed the stimulatory effects of BMMCs. Our study suggests that intermittent pain frequently observed in OA knee joints may be due, at least partly, to mast cells through activation of PAR2 and action of ATP, and that intraarticular injection of BMMCs into the OA knee joints may provide a useful experimental system for investigating molecular mechanisms by which pain is induced in OA knee joints.
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29
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Mwirigi J, Kume M, Hassler SN, Ahmad A, Ray PR, Jiang C, Chamessian A, Mseeh N, Ludwig BP, Rivera BD, Nieman MT, Van de Ven T, Ji RR, Dussor G, Boitano S, Vagner J, Price TJ. A Role for Protease Activated Receptor Type 3 (PAR3) in Nociception Demonstrated Through Development of a Novel Peptide Agonist. THE JOURNAL OF PAIN 2021; 22:692-706. [PMID: 33429107 PMCID: PMC8197731 DOI: 10.1016/j.jpain.2020.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 12/02/2020] [Accepted: 12/20/2020] [Indexed: 02/07/2023]
Abstract
The protease activated receptor (PAR) family is a group of G-protein coupled receptors (GPCRs) activated by proteolytic cleavage of the extracellular domain. PARs are expressed in a variety of cell types with crucial roles in homeostasis, immune responses, inflammation, and pain. PAR3 is the least researched of the four PARs, with little known about its expression and function. We sought to better understand its potential function in the peripheral sensory nervous system. Mouse single-cell RNA sequencing data demonstrates that PAR3 is widely expressed in dorsal root ganglion (DRG) neurons. Co-expression of PAR3 mRNA with other PARs was identified in various DRG neuron subpopulations, consistent with its proposed role as a coreceptor of other PARs. We developed a lipid tethered PAR3 agonist, C660, that selectively activates PAR3 by eliciting a Ca2+ response in DRG and trigeminal neurons. In vivo, C660 induces mechanical hypersensitivity and facial grimacing in WT but not PAR3-/- mice. We characterized other nociceptive phenotypes in PAR3-/- mice and found a loss of hyperalgesic priming in response to IL-6, carrageenan, and a PAR2 agonist, suggesting that PAR3 contributes to long-lasting nociceptor plasticity in some contexts. To examine the potential role of PAR3 in regulating the activity of other PARs in sensory neurons, we administered PAR1, PAR2, and PAR4 agonists and assessed mechanical and affective pain behaviors in WT and PAR3-/- mice. We observed that the nociceptive effects of PAR1 agonists were potentiated in the absence of PAR3. Our findings suggest a complex role of PAR3 in the physiology and plasticity of nociceptors. PERSPECTIVE: We evaluated the role of PAR3, a G-protein coupled receptor, in nociception by developing a selective peptide agonist. Our findings suggest that PAR3 contributes to nociception in various contexts and plays a role in modulating the activity of other PARs.
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Affiliation(s)
- Juliet Mwirigi
- University of Texas at Dallas, School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, Richardson, Texas
| | - Moeno Kume
- University of Texas at Dallas, School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, Richardson, Texas
| | - Shayne N Hassler
- University of Texas at Dallas, School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, Richardson, Texas
| | - Ayesha Ahmad
- University of Texas at Dallas, School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, Richardson, Texas
| | - Pradipta R Ray
- University of Texas at Dallas, School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, Richardson, Texas
| | - Changyu Jiang
- Duke University School of Medicine, Department of Anesthesiology, Pharmacology, and Cancer Biology, Durham, North Carolina
| | - Alexander Chamessian
- Duke University School of Medicine, Department of Anesthesiology, Pharmacology, and Cancer Biology, Durham, North Carolina
| | - Nakleh Mseeh
- University of Texas at Dallas, School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, Richardson, Texas
| | - Breya P Ludwig
- University of Texas at Dallas, School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, Richardson, Texas
| | - Benjamin D Rivera
- Department of Physiology, University of Arizona, Asthma and Airway Disease Research Center, Tucson, Arizona
| | - Marvin T Nieman
- Case Western Reserve University School of Medicine, Department of Pharmacology, Cleveland, Ohio
| | - Thomas Van de Ven
- Duke University School of Medicine, Department of Anesthesiology, Pharmacology, and Cancer Biology, Durham, North Carolina
| | - Ru-Rong Ji
- Duke University School of Medicine, Department of Anesthesiology, Pharmacology, and Cancer Biology, Durham, North Carolina
| | - Gregory Dussor
- University of Texas at Dallas, School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, Richardson, Texas
| | - Scott Boitano
- Department of Physiology, University of Arizona, Asthma and Airway Disease Research Center, Tucson, Arizona
| | - Josef Vagner
- University of Arizona, Bio5 Research Institute, Tucson, Arizona
| | - Theodore J Price
- University of Texas at Dallas, School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, Richardson, Texas.
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30
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Del Corvo M, Lazzari B, Capra E, Zavarez L, Milanesi M, Utsunomiya YT, Utsunomiya ATH, Stella A, de Paula Nogueira G, Garcia JF, Ajmone-Marsan P. Methylome Patterns of Cattle Adaptation to Heat Stress. Front Genet 2021; 12:633132. [PMID: 34122501 PMCID: PMC8194315 DOI: 10.3389/fgene.2021.633132] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 05/04/2021] [Indexed: 12/13/2022] Open
Abstract
Heat stress has a detrimental impact on cattle health, welfare and productivity by affecting gene expression, metabolism and immune response, but little is known on the epigenetic mechanisms mediating the effect of temperature at the cellular and organism level. In this study, we investigated genome-wide DNA methylation in blood samples collected from 5 bulls of the heat stress resilient Nellore breed and 5 bulls of the Angus that are more heat stress susceptible, exposed to the sun and high temperature-high humidity during the summer season of the Brazilian South-East region. The methylomes were analyzed during and after the exposure by Reduced Representation Bisulfite Sequencing, which provided genome-wide single-base resolution methylation profiles. Significant methylation changes between stressful and recovery periods were observed in 819 genes. Among these, 351 were only seen in Angus, 366 were specific to Nellore, and 102 showed significant changes in methylation patterns in both breeds. KEGG and Gene Ontology (GO) enrichment analyses showed that responses were breed-specific. Interestingly, in Nellore significant genes and pathways were mainly involved in stress responses and cellular defense and were under methylated during heat stress, whereas in Angus the response was less focused. These preliminary results suggest that heat challenge induces changes in methylation patterns in specific loci, which should be further scrutinized to assess their role in heat tolerance.
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Affiliation(s)
- Marcello Del Corvo
- Department of Animal Science Food and Nutrition - DIANA, Nutrigenomics and Proteomics Research Centre - PRONUTRIGEN, and Biodiversity and Ancient DNA Research Centre, Università Cattolica del Sacro Cuore, Piacenza, Italy.,Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche IBBA CNR, Milan, Italy
| | - Barbara Lazzari
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche IBBA CNR, Milan, Italy
| | - Emanuele Capra
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche IBBA CNR, Milan, Italy
| | - Ludmilla Zavarez
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil.,International Atomic Energy Agency, Collaborating Centre on Animal Genomics and Bioinformatics, Araçatuba, Brazil
| | - Marco Milanesi
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil.,International Atomic Energy Agency, Collaborating Centre on Animal Genomics and Bioinformatics, Araçatuba, Brazil
| | - Yuri Tani Utsunomiya
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil.,International Atomic Energy Agency, Collaborating Centre on Animal Genomics and Bioinformatics, Araçatuba, Brazil
| | - Adam Taiti Harth Utsunomiya
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil.,International Atomic Energy Agency, Collaborating Centre on Animal Genomics and Bioinformatics, Araçatuba, Brazil
| | - Alessandra Stella
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche IBBA CNR, Milan, Italy
| | - Guilherme de Paula Nogueira
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil
| | - Josè Fernando Garcia
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil.,International Atomic Energy Agency, Collaborating Centre on Animal Genomics and Bioinformatics, Araçatuba, Brazil
| | - Paolo Ajmone-Marsan
- Department of Animal Science Food and Nutrition - DIANA, Nutrigenomics and Proteomics Research Centre - PRONUTRIGEN, and Biodiversity and Ancient DNA Research Centre, Università Cattolica del Sacro Cuore, Piacenza, Italy
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31
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McDougall JJ, McConnell M, Reid AR. Intracellular versus extracellular inhibition of calpain I causes differential effects on pain in a rat model of joint inflammation. Mol Pain 2021; 17:17448069211016141. [PMID: 34006144 PMCID: PMC8138287 DOI: 10.1177/17448069211016141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Calpain I is a calcium-dependent cysteine protease which has dual effects
on tissue inflammation depending on its cellular location.
Intracellularly, calpain I has pro-inflammatory properties but becomes
anti-inflammatory when exteriorised into the extracellular space. In
this study, the effect of calpain I on joint pain was investigated
using the kaolin/carrageenan model of acute synovitis. Evoked pain
behaviour was determined by von Frey hair algesiometry and non-evoked
pain was measured using dynamic hindlimb weight bearing. Local
administration of calpain I reduced secondary allodynia in the acute
inflammation model and this effect was blocked by the cell impermeable
calpain inhibitor E-64c. Calpain I also blocked the algesic effect of
the protease activated receptor-2 (PAR-2) cleaving enzyme mast cell
tryptase. The cell permeable calpain blocker E-64d also produced
analgesia in arthritic joints. These data suggest that calpain I
produces disparate effects on joint pain viz.
analgesia when present extracellularly by disarming PAR-2, and
pro-algesic when the enzyme is inside the cell.
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Affiliation(s)
- Jason J McDougall
- Departments of Pharmacology and Anaesthesia, Pain Management & Perioperative Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Miranda McConnell
- Departments of Pharmacology and Anaesthesia, Pain Management & Perioperative Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Allison R Reid
- Departments of Pharmacology and Anaesthesia, Pain Management & Perioperative Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
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32
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Raef HS, Elmariah SB. Vulvar Pruritus: A Review of Clinical Associations, Pathophysiology and Therapeutic Management. Front Med (Lausanne) 2021; 8:649402. [PMID: 33898486 PMCID: PMC8058221 DOI: 10.3389/fmed.2021.649402] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/12/2021] [Indexed: 01/08/2023] Open
Abstract
Vulvar pruritus is an unpleasant sensation and frequent symptom associated with many dermatologic conditions, including infectious, inflammatory and neoplastic dermatoses affecting the female genitalia. It can lead to serious impairment of quality of life, impacting sexual function, relationships, sleep and self-esteem. In this review, common conditions associated with vulvar itch are discussed including atopic and contact dermatitis, lichen sclerosus, psoriasis and infectious vulvovaginitis. We review the potential physiologic, environmental and infectious factors that contribute to the development of vulvar itch and emphasize the importance of addressing their complex interplay when managing this disruptive and challenging symptom.
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Affiliation(s)
- Haya S Raef
- Tufts University School of Medicine, Boston, MA, United States.,Massachusetts General Hospital, Boston, MA, United States
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33
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Ruppenstein A, Limberg MM, Loser K, Kremer AE, Homey B, Raap U. Involvement of Neuro-Immune Interactions in Pruritus With Special Focus on Receptor Expressions. Front Med (Lausanne) 2021; 8:627985. [PMID: 33681256 PMCID: PMC7930738 DOI: 10.3389/fmed.2021.627985] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/27/2021] [Indexed: 12/21/2022] Open
Abstract
Pruritus is a common, but very challenging symptom with a wide diversity of underlying causes like dermatological, systemic, neurological and psychiatric diseases. In dermatology, pruritus is the most frequent symptom both in its acute and chronic form (over 6 weeks in duration). Treatment of chronic pruritus often remains challenging. Affected patients who suffer from moderate to severe pruritus have a significantly reduced quality of life. The underlying physiology of pruritus is very complex, involving a diverse network of components in the skin including resident cells such as keratinocytes and sensory neurons as well as transiently infiltrating cells such as certain immune cells. Previous research has established that there is a significant crosstalk among the stratum corneum, nerve fibers and various immune cells, such as keratinocytes, T cells, basophils, eosinophils and mast cells. In this regard, interactions between receptors on cutaneous and spinal neurons or on different immune cells play an important role in the processing of signals which are important for the transmission of pruritus. In this review, we discuss the role of various receptors involved in pruritus and inflammation, such as TRPV1 and TRPA1, IL-31RA and OSMR, TSLPR, PAR-2, NK1R, H1R and H4R, MRGPRs as well as TrkA, with a focus on interaction between nerve fibers and different immune cells. Emerging evidence shows that neuro-immune interactions play a pivotal role in mediating pruritus-associated inflammatory skin diseases such as atopic dermatitis, psoriasis or chronic spontaneous urticaria. Targeting these bidirectional neuro-immune interactions and the involved pruritus-specific receptors is likely to contribute to novel insights into the underlying pathogenesis and targeted treatment options of pruritus.
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Affiliation(s)
- Aylin Ruppenstein
- Division of Experimental Allergy and Immunodermatology, Faculty of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany
| | - Maren M Limberg
- Division of Experimental Allergy and Immunodermatology, Faculty of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany
| | - Karin Loser
- Division of Immunology, Faculty of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany
| | - Andreas E Kremer
- Department of Medicine 1, University Hospital Erlangen and Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Bernhard Homey
- Department of Dermatology, Heinrich-Heine-University of Düsseldorf, Düsseldorf, Germany
| | - Ulrike Raap
- Division of Experimental Allergy and Immunodermatology, Faculty of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany.,University Clinic of Dermatology and Allergy, Oldenburg Clinic, Oldenburg, Germany
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34
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Solinski HJ, Rukwied R. Electrically Evoked Itch in Human Subjects. Front Med (Lausanne) 2021; 7:627617. [PMID: 33553220 PMCID: PMC7855585 DOI: 10.3389/fmed.2020.627617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 12/23/2020] [Indexed: 11/13/2022] Open
Abstract
Administration of chemicals (pruritogens) into the skin evokes itch based on signal transduction mechanisms that generate action potentials mainly in mechanically sensitive and insensitive primary afferent C-fibers (pruriceptors). These signals from peripheral neurons are processed in spinal and supra-spinal centers of the central nervous system and finally generate the sensation of itch. Compared to chemical stimulation, electrical activation of pruriceptors would allow for better temporal control and thereby a more direct functional assessment of their activation. Here, we review the electrical stimulation paradigms which were used to evoke itch in humans in the past. We further evaluate recent attempts to explore electrically induced itch in atopic dermatitis patients. Possible mechanisms underlying successful pruritus generation in chronic itch patients by transdermal slowly depolarizing electrical stimulation are discussed.
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Affiliation(s)
- Hans Jürgen Solinski
- Department of Experimental Pain Research, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Roman Rukwied
- Department of Experimental Pain Research, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
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Schweickert PG, Yang Y, White EE, Cresswell GM, Elzey BD, Ratliff TL, Arumugam P, Antoniak S, Mackman N, Flick MJ, Konieczny SF. Thrombin-PAR1 signaling in pancreatic cancer promotes an immunosuppressive microenvironment. J Thromb Haemost 2021; 19:161-172. [PMID: 33064371 PMCID: PMC7790967 DOI: 10.1111/jth.15115] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 09/11/2020] [Accepted: 09/23/2020] [Indexed: 12/18/2022]
Abstract
Essentials Elimination of PDAC tumor cell PAR1 increased cytotoxic T cells and reduced tumor macrophages. PAR1KO PDAC cells are preferentially eliminated from growing tumors. Thrombin-PAR1 signaling in PDAC tumor cells drives an immunosuppressive gene signature. Csf2 and Ptgs2 are thrombin-PAR1 downstream immune suppressor genes in PDAC tumor cells. ABSTRACT: Background Pancreatic ductal adenocarcinoma (PDAC) is characterized by a prothrombotic state and a lack of host antitumor immune responsiveness. Linking these two key features, we previously demonstrated that tumor-derived coagulation activity promotes immune evasion. Specifically, thrombin-protease-activated receptor-1 (PAR1) signaling in mouse PDAC cells drives tumor growth by evading cytotoxic CD8a+ cells. Methods Syngeneic mixed cell tumor growth, transcriptional analyses, and functional tests of immunosuppressive response genes were used to identify cellular and molecular immune evasion mechanisms mediated by thrombin-PAR-1 signaling in mouse PDAC tumor cells. Results Elimination of tumor cell PAR1 in syngeneic graft studies increased cytotoxic T lymphocyte (CTL) infiltration and decreased tumor-associated macrophages in the tumor microenvironment. Co-injection of PAR1-expressing and PAR1-knockout (PAR-1KO ) tumor cells into immunocompetent mice resulted in preferential elimination of PAR-1KO cells from developing tumors, suggesting that PAR1-dependent immune evasion is not reliant on CTL exclusion. Transcriptomics analyses revealed no PAR1-dependent changes in the expression of immune checkpoint proteins and no difference in major histocompatibility complex-I cell surface expression. Importantly, thrombin-PAR1 signaling in PDAC cells upregulated genes linked to immunosuppression, including Csf2 and Ptgs2. Functional analyses confirmed that both Csf2 and Ptgs2 are critical for PDAC syngeneic graft tumor growth and overexpression of each factor partially restored tumor growth of PAR1KO cells in immunocompetent mice. Conclusions Our results provide novel insight into the mechanisms of a previously unrecognized pathway coupling coagulation to PDAC immune evasion by identifying PAR1-dependent changes in the tumor microenvironment, a PAR1-driven immunosuppressive gene signature, and Csf2 and Ptgs2 as critical PAR1 downstream targets.
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Affiliation(s)
- Patrick G. Schweickert
- Purdue University, Department of Biological Sciences and
the Purdue Center for Cancer Research, West Lafayette, Indiana, USA
| | - Yi Yang
- University of North Carolina, Department of Pathology and
Laboratory Medicine, the Lineberger Comprehensive Cancer Center, and the UNC Blood
Research Center, Chapel Hill, North Carolina, USA
| | - Emily E. White
- Purdue University, Department of Biological Sciences and
the Purdue Center for Cancer Research, West Lafayette, Indiana, USA
| | - Gregory M. Cresswell
- Purdue University, Department of Comparative Pathobiology
and the Purdue Center for Cancer Research, West Lafayette, Indiana, USA
| | - Bennett D. Elzey
- Purdue University, Department of Comparative Pathobiology
and the Purdue Center for Cancer Research, West Lafayette, Indiana, USA
| | - Timothy L. Ratliff
- Purdue University, Department of Comparative Pathobiology
and the Purdue Center for Cancer Research, West Lafayette, Indiana, USA
| | - Paritha Arumugam
- Cincinnati Children’s Hospital Medical Center,
Division of Pulmonary Biology, Cincinnati, Ohio, USA
| | - Silvio Antoniak
- University of North Carolina, Department of Pathology and
Laboratory Medicine, the Lineberger Comprehensive Cancer Center, and the UNC Blood
Research Center, Chapel Hill, North Carolina, USA
| | - Nigel Mackman
- University of North Carolina, Department of Medicine and
the UNC Blood Research Center, Chapel Hill, North Carolina, USA
| | - Matthew J. Flick
- University of North Carolina, Department of Pathology and
Laboratory Medicine, the Lineberger Comprehensive Cancer Center, and the UNC Blood
Research Center, Chapel Hill, North Carolina, USA
| | - Stephen F. Konieczny
- Purdue University, Department of Biological Sciences and
the Purdue Center for Cancer Research, West Lafayette, Indiana, USA
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Wang Y, Yu Z, Xiao W, Lu S, Zhang J. Allosteric binding sites at the receptor-lipid bilayer interface: novel targets for GPCR drug discovery. Drug Discov Today 2020; 26:690-703. [PMID: 33301977 DOI: 10.1016/j.drudis.2020.12.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/19/2020] [Accepted: 12/01/2020] [Indexed: 01/01/2023]
Abstract
As a superfamily of membrane receptors, G-protein-coupled receptors (GPCRs) have significant roles in human physiological processes, including cell proliferation, metabolism, and neuromodulation. GPCRs are vital targets of therapeutic drugs, and their allosteric regulation represents a novel direction for drug discovery. Given the numerous breakthroughs in structural biology, diverse allosteric sites on GPCRs have been identified within the extracellular and intracellular loops, and the seven core transmembrane helices. However, a unique type of allosteric site has also been discovered at the interface of the receptor-lipid bilayer, similar to the β2-adrenergic receptor. Here, we review recent identifications of these allosteric sites and the detailed modulator-target interactions within the interface for each modulator to highlight the role of lipids in GPCR allosteric drug discovery.
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Affiliation(s)
- Ying Wang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China
| | - Zhengtian Yu
- Nutshell Biotechnology Co., Ltd., Shanghai, China
| | - Wen Xiao
- Nutshell Biotechnology Co., Ltd., Shanghai, China
| | - Shaoyong Lu
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China; Medicinal Chemistry and Bioinformatics Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China; State Key Laboratory of Oncogenes and Related Genes, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
| | - Jian Zhang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China; Medicinal Chemistry and Bioinformatics Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China; State Key Laboratory of Oncogenes and Related Genes, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
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Khan AQ, Akhtar S, Prabhu KS, Zarif L, Khan R, Alam M, Buddenkotte J, Ahmad A, Steinhoff M, Uddin S. Exosomes: Emerging Diagnostic and Therapeutic Targets in Cutaneous Diseases. Int J Mol Sci 2020; 21:ijms21239264. [PMID: 33291683 PMCID: PMC7730213 DOI: 10.3390/ijms21239264] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 11/28/2020] [Accepted: 12/02/2020] [Indexed: 02/06/2023] Open
Abstract
Skin is the largest human organ and is continuously exposed to various exogenous and endogenous trigger factors affecting body homeostasis. A number of mechanisms, including genetic, inflammatory and autoimmune ones, have been implicated in the pathogenesis of cutaneous diseases. Recently, there has been considerable interest in the role that extracellular vesicles, particularly exosomes, play in human diseases, through their modulation of multiple signaling pathways. Exosomes are nano-sized vesicles secreted by all cell types. They function as cargo carriers shuttling proteins, nucleic acids, lipids etc., thus impacting the cell-cell communications and transfer of vital information/moieties critical for skin homeostasis and disease pathogenesis. This review summarizes the available knowledge on how exosomes affect pathogenesis of cutaneous diseases, and highlights their potential as future targets for the therapy of various skin diseases.
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Affiliation(s)
- Abdul Q. Khan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; (A.Q.K.); (K.S.P.); (M.A.); (J.B.)
| | - Sabah Akhtar
- Department of Biological and Environmental Sciences, Qatar University, Doha 2713, Qatar; (S.A.); (L.Z.)
| | - Kirti S. Prabhu
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; (A.Q.K.); (K.S.P.); (M.A.); (J.B.)
| | - Lubna Zarif
- Department of Biological and Environmental Sciences, Qatar University, Doha 2713, Qatar; (S.A.); (L.Z.)
| | - Rehan Khan
- Department of Nano-Therapeutics, Institute of Nano Science and Technology, Habitat Centre, Phase 10, Sector 64, Mohali, Punjab 160062, India;
| | - Majid Alam
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; (A.Q.K.); (K.S.P.); (M.A.); (J.B.)
- Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar
- Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha 3050, Qatar
| | - Joerg Buddenkotte
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; (A.Q.K.); (K.S.P.); (M.A.); (J.B.)
- Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar
- Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha 3050, Qatar
| | - Aamir Ahmad
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, AL 35233, USA
- Correspondence: (A.A.); (M.S.); (S.U.); Tel.: +974-40253220 (S.U.)
| | - Martin Steinhoff
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; (A.Q.K.); (K.S.P.); (M.A.); (J.B.)
- Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar
- Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha 3050, Qatar
- Department of Medicine, Weill Cornell Medicine Qatar, Qatar Foundation-Education City, Doha 24144, Qatar
- Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA
- College of Medicine, Qatar University, Doha 2713, Qatar
- Correspondence: (A.A.); (M.S.); (S.U.); Tel.: +974-40253220 (S.U.)
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; (A.Q.K.); (K.S.P.); (M.A.); (J.B.)
- Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar
- Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha 3050, Qatar
- Correspondence: (A.A.); (M.S.); (S.U.); Tel.: +974-40253220 (S.U.)
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High CSF thrombin concentration and activity is associated with an unfavorable outcome in patients with intracerebral hemorrhage. PLoS One 2020; 15:e0241565. [PMID: 33175864 PMCID: PMC7657554 DOI: 10.1371/journal.pone.0241565] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/18/2020] [Indexed: 11/19/2022] Open
Abstract
Background The cerebral thrombin system is activated in the early stage after intracerebral hemorrhage (ICH). Expression of thrombin leads to concentration dependent secondary neuronal damage and detrimental neurological outcome. In this study we aimed to investigate the impact of thrombin concentration and activity in the cerebrospinal fluid (CSF) of patients with ICH on clinical outcome. Methods Patients presenting with space-occupying lobar supratentorial hemorrhage requiring extra-ventricular drainage (EVD) were included in our study. The CSF levels of thrombin, its precursor prothrombin and the Thrombin-Antithrombin complex (TAT) were measured using enzyme linked immune sorbent assays (ELISA). The oxidative stress marker Superoxide dismutase (SOD) was assessed in CSF. Initial clot size and intraventricular hemorrhage (IVH) volume was calculated based on by computerized tomography (CT) upon admission to our hospital. Demographic data, clinical status at admission and neurological outcome were assessed using the modified Rankin Scale (mRS) at 6-weeks and 6-month after ICH. Results Twenty-two consecutive patients (9 females, 11 males) with supratentorial hemorrhage were included in this study. CSF concentrations of prothrombin (p < 0.005), thrombin (p = 0.005) and TAT (p = 0.046) were statistical significantly different in patients with ICH compared to non-hemorrhagic CSF samples. CSF concentrations of thrombin 24h after ICH correlated with the mRS index after 6 weeks (r2 = 0.73; < 0.005) and 6 months (r2 = 0.63; < 0.005) after discharge from hospital. Thrombin activity, measured via TAT as surrogate parameter of coagulation, likewise correlated with the mRS at 6 weeks (r2 = 0.54; < 0.01) and 6 months (r2 = 0.66; < 0.04). High thrombin concentrations coincide with higher SOD levels 24h after ICH (p = 0.01). Conclusion In this study we found that initial thrombin concentration and activity in CSF of ICH patients did not correlate with ICH and IVH volume but are associated with a poorer functional neurological outcome. These findings support mounting evidence of the role of thrombin as a contributor to secondary injury formation after ICH.
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Frombach J, Rancan F, Kübrich K, Schumacher F, Unbehauen M, Blume-Peytavi U, Haag R, Kleuser B, Sabat R, Wolk K, Vogt A. Serine Protease-Mediated Cutaneous Inflammation: Characterization of an Ex Vivo Skin Model for the Assessment of Dexamethasone-Loaded Core Multishell-Nanocarriers. Pharmaceutics 2020; 12:pharmaceutics12090862. [PMID: 32927792 PMCID: PMC7558872 DOI: 10.3390/pharmaceutics12090862] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/02/2020] [Accepted: 09/07/2020] [Indexed: 11/29/2022] Open
Abstract
Standard experimental set-ups for the assessment of skin penetration are typically performed on skin explants with an intact skin barrier or after a partial mechanical or chemical perturbation of the stratum corneum, but they do not take into account biochemical changes. Among the various pathological alterations in inflamed skin, aberrant serine protease (SP) activity directly affects the biochemical environment in the superficial compartments, which interact with topically applied formulations. It further impacts the skin barrier structure and is a key regulator of inflammatory mediators. Herein, we used short-term cultures of ex vivo human skin treated with trypsin and plasmin as inflammatory stimuli to assess the penetration and biological effects of the anti-inflammatory drug dexamethasone (DXM), encapsulated in core multishell-nanocarriers (CMS-NC), when compared to a standard cream formulation. Despite a high interindividual variability, the combined pretreatment of the skin resulted in an average 2.5-fold increase of the transepidermal water loss and swelling of the epidermis, as assessed by optical coherence tomography, as well as in a moderate increase of a broad spectrum of proinflammatory mediators of clinical relevance. The topical application of DXM-loaded CMS-NC or DXM standard cream revealed an increased penetration into SP-treated skin when compared to untreated control skin with an intact barrier. Both formulations, however, delivered sufficient amounts of DXM to effectively suppress the production of interleukin-6 (IL-6), interleukin-8 (IL-8) and Thymic Stromal Lymphopoietin (TSLP). In conclusion, we suggest that the herein presented ex vivo inflammatory skin model is functional and could improve the selection of promising drug delivery strategies for anti-inflammatory compounds at early stages of development.
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Affiliation(s)
- Janna Frombach
- Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venereology and Allergy, Charité-Universitatsmedizin Berlin, Corporate Member of Freie Universitaet Berlin, Humboldt-Universitaet zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (J.F.); (F.R.); (K.K.); (U.B.-P.)
| | - Fiorenza Rancan
- Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venereology and Allergy, Charité-Universitatsmedizin Berlin, Corporate Member of Freie Universitaet Berlin, Humboldt-Universitaet zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (J.F.); (F.R.); (K.K.); (U.B.-P.)
| | - Katharina Kübrich
- Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venereology and Allergy, Charité-Universitatsmedizin Berlin, Corporate Member of Freie Universitaet Berlin, Humboldt-Universitaet zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (J.F.); (F.R.); (K.K.); (U.B.-P.)
| | - Fabian Schumacher
- Institute of Nutritional Science, University of Potsdam, 14558 Nuthetal, Germany; (F.S.); (B.K.)
| | - Michael Unbehauen
- Organic Chemistry, Institute of Chemistry and Biochemistry, Freie Universitaet Berlin, 14195 Berlin, Germany; (M.U.); (R.H.)
| | - Ulrike Blume-Peytavi
- Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venereology and Allergy, Charité-Universitatsmedizin Berlin, Corporate Member of Freie Universitaet Berlin, Humboldt-Universitaet zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (J.F.); (F.R.); (K.K.); (U.B.-P.)
| | - Rainer Haag
- Organic Chemistry, Institute of Chemistry and Biochemistry, Freie Universitaet Berlin, 14195 Berlin, Germany; (M.U.); (R.H.)
| | - Burkhard Kleuser
- Institute of Nutritional Science, University of Potsdam, 14558 Nuthetal, Germany; (F.S.); (B.K.)
| | - Robert Sabat
- Psoriasis Research and Treatment Center, Department of Dermatology, Venerology and Allergy/Institute for Medical Immunology, Charité-Universitaetsmedizin Berlin, Corporate Member of Freie Universitaet Berlin, Humboldt-Universitaet zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (R.S.); (K.W.)
| | - Kerstin Wolk
- Psoriasis Research and Treatment Center, Department of Dermatology, Venerology and Allergy/Institute for Medical Immunology, Charité-Universitaetsmedizin Berlin, Corporate Member of Freie Universitaet Berlin, Humboldt-Universitaet zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (R.S.); (K.W.)
| | - Annika Vogt
- Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venereology and Allergy, Charité-Universitatsmedizin Berlin, Corporate Member of Freie Universitaet Berlin, Humboldt-Universitaet zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (J.F.); (F.R.); (K.K.); (U.B.-P.)
- Correspondence:
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Buhl T, Ikoma A, Kempkes C, Cevikbas F, Sulk M, Buddenkotte J, Akiyama T, Crumrine D, Camerer E, Carstens E, Schön MP, Elias P, Coughlin SR, Steinhoff M. Protease-Activated Receptor-2 Regulates Neuro-Epidermal Communication in Atopic Dermatitis. Front Immunol 2020; 11:1740. [PMID: 32903402 PMCID: PMC7435019 DOI: 10.3389/fimmu.2020.01740] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 06/29/2020] [Indexed: 01/01/2023] Open
Abstract
Background: Activation of protease-activated receptor-2 (PAR2) has been implicated in inflammation, pruritus, and skin barrier regulation, all characteristics of atopic dermatitis (AD), as well as Netherton syndrome which has similar characteristics. However, understanding the precise role of PAR2 on neuro-immune communication in AD has been hampered by the lack of appropriate animal models. Methods: We used a recently established mouse model with epidermal overexpression of PAR2 (PAR2OE) and littermate WT mice to study the impact of increased PAR2 expression in epidermal cells on spontaneous and house dust mite (HDM)-induced skin inflammation, itch, and barrier dysfunction in AD, in vivo and ex vivo. Results: PAR2OE newborns displayed no overt abnormalities, but spontaneously developed dry skin, severe pruritus, and eczema. Dermatological, neurophysiological, and immunological analyses revealed the hallmarks of AD-like skin disease. Skin barrier defects were observed before onset of skin lesions. Application of HDM onto PAR2OE mice triggered pruritus and the skin phenotype. PAR2OE mice displayed an increased density of nerve fibers, increased nerve growth factor and endothelin-1 expression levels, alloknesis, enhanced scratching (hyperknesis), and responses of dorsal root ganglion cells to non-histaminergic pruritogens. Conclusion: PAR2 in keratinocytes, activated by exogenous and endogenous proteases, is sufficient to drive barrier dysfunction, inflammation, and pruritus and sensitize skin to the effects of HDM in a mouse model that mimics human AD. PAR2 signaling in keratinocytes appears to be sufficient to drive several levels of neuro-epidermal communication, another feature of human AD.
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Affiliation(s)
- Timo Buhl
- Department of Dermatology and Surgery, University of California, San Francisco, San Francisco, CA, United States.,Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, Göttingen, Germany
| | - Akihiko Ikoma
- Department of Dermatology and Surgery, University of California, San Francisco, San Francisco, CA, United States.,Department of Dermatology and UCD Charles Institute for Translational Dermatology, University College Dublin, Dublin, Ireland
| | - Cordula Kempkes
- Department of Dermatology and Surgery, University of California, San Francisco, San Francisco, CA, United States
| | - Ferda Cevikbas
- Department of Dermatology and Surgery, University of California, San Francisco, San Francisco, CA, United States
| | - Mathias Sulk
- Department of Dermatology and Surgery, University of California, San Francisco, San Francisco, CA, United States.,Department of Dermatology, University Hospital Münster, Münster, Germany
| | - Joerg Buddenkotte
- Department of Dermatology and Venerology, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Tasuku Akiyama
- Department of Dermatology, Anatomy and Cell Biology, Temple Itch Center, Temple University, Philadelphia, PA, United States.,Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, United States
| | - Debbie Crumrine
- Department of Dermatology and Surgery, University of California, San Francisco, San Francisco, CA, United States
| | - Eric Camerer
- INSERM U970, Paris Cardiovascular Research Centre, Paris, France
| | - Earl Carstens
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, United States
| | - Michael P Schön
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, Göttingen, Germany
| | - Peter Elias
- Department of Dermatology and Surgery, University of California, San Francisco, San Francisco, CA, United States
| | - Shaun R Coughlin
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, United States
| | - Martin Steinhoff
- Department of Dermatology and Surgery, University of California, San Francisco, San Francisco, CA, United States.,Department of Dermatology and UCD Charles Institute for Translational Dermatology, University College Dublin, Dublin, Ireland.,Department of Dermatology and Venerology, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar.,Department of Dermatology, Medical School, University of Qatar, Doha, Qatar.,School of Medicine, Weill Cornell Medicine-Qatar, Doha, Qatar.,Department of Dermatology, Weill Cornell Medicine, New York, NY, United States
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Rudresha GV, Manjuprasanna VN, Urs AP, Choudhury M, Rajaiah R, Vishwanath BS. Serine protease from Tricosanthus tricuspidata accelerates healing of Echis carinatus venom-induced necrotic wound. Toxicon 2020; 183:1-10. [DOI: 10.1016/j.toxicon.2020.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/11/2020] [Accepted: 05/17/2020] [Indexed: 10/24/2022]
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Cevikbas F, Lerner EA. Physiology and Pathophysiology of Itch. Physiol Rev 2020; 100:945-982. [PMID: 31869278 PMCID: PMC7474262 DOI: 10.1152/physrev.00017.2019] [Citation(s) in RCA: 119] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 10/31/2019] [Accepted: 12/04/2019] [Indexed: 02/06/2023] Open
Abstract
Itch is a topic to which everyone can relate. The physiological roles of itch are increasingly understood and appreciated. The pathophysiological consequences of itch impact quality of life as much as pain. These dynamics have led to increasingly deep dives into the mechanisms that underlie and contribute to the sensation of itch. When the prior review on the physiology of itching was published in this journal in 1941, itch was a black box of interest to a small number of neuroscientists and dermatologists. Itch is now appreciated as a complex and colorful Rubik's cube. Acute and chronic itch are being carefully scratched apart and reassembled by puzzle solvers across the biomedical spectrum. New mediators are being identified. Mechanisms blur boundaries of the circuitry that blend neuroscience and immunology. Measures involve psychophysics and behavioral psychology. The efforts associated with these approaches are positively impacting the care of itchy patients. There is now the potential to markedly alleviate chronic itch, a condition that does not end life, but often ruins it. We review the itch field and provide a current understanding of the pathophysiology of itch. Itch is a disease, not only a symptom of disease.
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Affiliation(s)
- Ferda Cevikbas
- Dermira, Inc., Menlo Park, California; and Harvard Medical School and the Cutaneous Biology Research Center at Massachusetts General Hospital, Charlestown, Massachusetts
| | - Ethan A Lerner
- Dermira, Inc., Menlo Park, California; and Harvard Medical School and the Cutaneous Biology Research Center at Massachusetts General Hospital, Charlestown, Massachusetts
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Krenzlin H, Gresser E, Jussen D, Riede N, Taylor L, Vogelaar CF, Ringel F, Kempski O, Alessandri B. The Cerebral Thrombin System Is Activated after Intracerebral Hemorrhage and Contributes to Secondary Lesion Growth and Poor Neurological Outcome in C57Bl/6 Mice. J Neurotrauma 2020; 37:1481-1490. [PMID: 31830857 DOI: 10.1089/neu.2019.6582] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
With increasing evidence for the existence of a cerebral thrombin system, coagulation factor IIa (thrombin) is suspected to influence the pathogenesis of secondary injury progression after intracerebral hemorrhage (ICH). We hypothesized that mechanisms associated with local volume expansion after ICH, rather than blood constituents, activate the cerebral thrombin system and are responsible for detrimental neurological outcome. To test this hypothesis, we examine the local thrombin expression after ICH in a C57BL/6N mouse model in the presence and absence of blood constituents. ICH was established using stereotaxic orthotopic injection of utologous blood (n = 10) or silicone oil as inert volume substance (n = 10) into the striatum. Intracranial pressure (ICP), cerebral blood flow (CBF), and mean arterial blood pressure (MAP) were monitored during and 30 min after the procedure. No significant differences between ICP, CBF, and MAP were found between both groups. Prothrombin messenger RNA expression was upregulated early after ICH. Immunohistochemistry showed an increase of perilesional thrombin in both groups (blood, 4.24-fold; silicone, 3.10-fold), whereas prothrombin fragment (F1.2) was elevated only in the absence of whole blood. Thrombin expression is colocalized with neuronal antigen expression. After 24 h, lesion size and neuronal loss were similar. Perihematomal thrombin correlated with increased neuronal loss and detrimental neurological outcome in vivo. In our study, we demonstrate, for the first time, that the local cerebral thrombin system is activated after ICH and that this activation is independent of the presence of whole-blood constituents. In our study, neuronal damage is driven by local thrombin expression and leads to an adverse clinical outcome.
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Affiliation(s)
- Harald Krenzlin
- Institute of Neurosurgical Pathophysiology, Johannes Gutenberg-University Mainz, Mainz, Germany.,Department of Neurosurgery, and Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Eva Gresser
- Institute of Neurosurgical Pathophysiology, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Daniel Jussen
- Institute of Neurosurgical Pathophysiology, Johannes Gutenberg-University Mainz, Mainz, Germany.,Department of Neurosurgery, HELIOS Dr. Horst-Schmidt-Kliniken, Wiesbaden, Germany
| | - Nicole Riede
- Institute of Neurosurgical Pathophysiology, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Louise Taylor
- Institute of Neurosurgical Pathophysiology, Johannes Gutenberg-University Mainz, Mainz, Germany
| | | | - Florian Ringel
- Institute of Neurosurgical Pathophysiology, Johannes Gutenberg-University Mainz, Mainz, Germany.,Department of Neurosurgery, and Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Oliver Kempski
- Institute of Neurosurgical Pathophysiology, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Beat Alessandri
- Institute of Neurosurgical Pathophysiology, Johannes Gutenberg-University Mainz, Mainz, Germany
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Ayasse MT, Buddenkotte J, Alam M, Steinhoff M. Role of neuroimmune circuits and pruritus in psoriasis. Exp Dermatol 2020; 29:414-426. [PMID: 31954075 DOI: 10.1111/exd.14071] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 12/09/2019] [Accepted: 12/31/2019] [Indexed: 12/19/2022]
Abstract
Psoriasis is a chronic inflammatory skin disease presenting with an array of clinical phenotypes, often associated with pruritus. Environmental and psychological stressors can exacerbate psoriasis symptoms and provoke flares. Recent studies suggest a dysfunctional hypothalamic-pituitary-adrenal (HPA) axis in some patients with psoriasis that can result in immune dysregulation. The immune system, in turn, can communicate with the nervous system to induce, maintain or aggravate psoriasis. In the skin, peripheral sensory as well as autonomic nerves control release of inflammatory mediators from dendritic cells, mast cells, T cells or keratinocytes, thereby modulating inflammatory responses and, in case of sensory nerves, pruritus. In response to the environment or stress, cytokines, chemokines, proteases, and neuropeptides fluctuate in psoriasis and influence immune responses as well as nerve activity. Furthermore, immune cells communicate with sensory nerves which control release of cytokines, such as IL-23, that are ultimately involved in psoriasis pathogenesis. Nerves also communicate with keratinocytes to induce epidermal proliferation. Notably, in contrast to recent years the debilitating problem of pruritus in psoriasis has been increasingly appreciated. Thus, investigating neuroimmune communication in psoriasis will not only expand our knowledge about the impact of sensory nerves in inflammation and pruritus and give new insights into the impact of environmental factors activating neuroimmune circuits or of stress in psoriasis, but may also lead to novel therapies. This review summarizes the relevant literature on the role of neuroimmune circuits, stress and how the central HPA axis and its peripheral equivalent in the skin, impact psoriasis.
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Affiliation(s)
- Marissa T Ayasse
- Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Jörg Buddenkotte
- Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA.,Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Majid Alam
- Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Martin Steinhoff
- Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar.,Weill Cornell Medicine-Qatar, Doha, Qatar.,Medical School, Qatar University, Doha, Qatar.,School of Medicine, Weill Cornell University, New York, NY, USA
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Abstract
Rheumatoid arthritis (RA) is an autoimmune disease in which a variety of circulating pro-inflammatory cells and dysregulated molecules are involved in disease aetiology and progression. Platelets are an important cellular element in the circulation that can bind several dysregulated molecules (such as collagen, thrombin and fibrinogen) that are present both in the synovium and the circulation of patients with RA. Platelets not only respond to dysregulated molecules in their environment but also transport and express their own inflammatory mediators, and serve as regulators at the boundary between haemostasis and immunity. Activated platelets also produce microparticles, which further convey signalling molecules and receptors to the synovium and circulation, thereby positioning these platelet-derived particles as strategic regulators of inflammation. These diverse functions come together to make platelets facilitators of cellular crosstalk in RA. Thus, the receptor functions, ligand binding potential and dysregulated signalling pathways in platelets are becoming increasingly important for treatment in RA. This Review aims to highlight the role of platelets in RA and the need to closely examine platelets as health indicators when designing effective pharmaceutical targets in this disease.
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Klebe D, McBride D, Krafft PR, Flores JJ, Tang J, Zhang JH. Posthemorrhagic hydrocephalus development after germinal matrix hemorrhage: Established mechanisms and proposed pathways. J Neurosci Res 2020; 98:105-120. [PMID: 30793349 PMCID: PMC6703985 DOI: 10.1002/jnr.24394] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 12/05/2018] [Accepted: 01/14/2019] [Indexed: 01/17/2023]
Abstract
In addition to being the leading cause of morbidity and mortality in premature infants, germinal matrix hemorrhage (GMH) is also the leading cause of acquired infantile hydrocephalus. The pathophysiology of posthemorrhagic hydrocephalus (PHH) development after GMH is complex and vaguely understood, although evidence suggests fibrosis and gliosis in the periventricular and subarachnoid spaces disrupts normal cerebrospinal fluid (CSF) dynamics. Theories explaining general hydrocephalus etiology have substantially evolved from the original bulk flow theory developed by Dr. Dandy over a century ago. Current clinical and experimental evidence supports a new hydrodynamic theory for hydrocephalus development involving redistribution of vascular pulsations and disruption of Starling forces in the brain microcirculation. In this review, we discuss CSF flow dynamics, history and development of theoretical hydrocephalus pathophysiology, and GMH epidemiology and etiology as it relates to PHH development. We highlight known mechanisms and propose new avenues that will further elucidate GMH pathophysiology, specifically related to hydrocephalus.
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Affiliation(s)
- Damon Klebe
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92350
| | - Devin McBride
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92350
| | - Paul R Krafft
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92350
- Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA 92350
| | - Jerry J Flores
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92350
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92350
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92350
- Department of Anesthesiology and Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA 92350
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Richard SA. Elucidating the novel biomarker and therapeutic potentials of High-mobility group box 1 in Subarachnoid hemorrhage: A review. AIMS Neurosci 2019; 6:316-332. [PMID: 32341986 PMCID: PMC7179354 DOI: 10.3934/neuroscience.2019.4.316] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 11/21/2019] [Indexed: 12/13/2022] Open
Abstract
Subarachnoid hemorrhage (SAH) frequently arises after an aneurysm in a cerebral artery ruptures, resulting into bleeding as well as clot formation. High-mobility group box 1 (HMGB1) is an extremely preserved, universal protein secreted in the nuclei of all cell varieties. This review explores the biomarker as well as therapeutic potentials of HMBG1 in SAH especially during the occurrence of cerebral vasospasms. Plasma HMGB1 levels have proven to be very useful prognosticators of effective outcome as well as death after SAH. Correspondingly, higher HMGB1 levels in the cerebrospinal fluid (CSF) of SAH patients correlated well with poor outcome; signifying that, CSF level of HMGB1 is a novel predictor of outcome following SAH. Nonetheless, the degree of angiographic vasospasm does not always correlate with the degree of neurological deficits in SAH patients. HMGB1 stimulated cerebral vasospasm, augmented gene as well as protein secretory levels of receptor for advance glycation end product (RAGE) in neurons following SAH; which means that, silencing HMGB1 during SAH could be of therapeutic value. Compounds like resveratrol, glycyrrhizin, rhinacanthin, purpurogallin, 4′-O-β-D-Glucosyl-5-O-Methylvisamminol (4OGOMV) as well as receptor-interacting serine/threonine-protein kinase 3 (RIPK3) gene are capable of interacting with HMGB1 resulting in therapeutic benefits following SAH.
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Affiliation(s)
- Seidu A Richard
- Department of Medicine, Princefield University, P. O. Box MA 128, Ho-Volta Region, Ghana West Africa
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Thrombin Induces Secretion of Multiple Cytokines and Expression of Protease-Activated Receptors in Mouse Mast Cell Line. Mediators Inflamm 2019; 2019:4952131. [PMID: 31814803 PMCID: PMC6878808 DOI: 10.1155/2019/4952131] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/18/2019] [Accepted: 10/04/2019] [Indexed: 02/05/2023] Open
Abstract
Background Thrombin could elicit degranulation of mast cells involved in numerous physiologic and pathologic processes; however, the detailed scrutiny of this procedure and further research of possible cell signaling pathways are lacking. Methods P815 mouse mast cells were exposed to various concentrations of thrombin for 16 h. Expression of protease-activated receptor (PAR)1, PAR2, PAR3, and PAR4 mRNA in P815 was analyzed by quantitative real-time PCR (qRT-PCR) and the fittest concentration of thrombin was decided. Then, secretions of mediators from P815 stimulated by thrombin 0.2 U/ml were determined using enzyme-linked immunosorbent assay (ELISA) and Luminex liquichip; the possible cell signaling pathways were measured by immunoblotting. Furthermore, inhibition of thrombin inhibitor (hirudin), PAR1 inhibitor (SCH79797), and MAPK inhibitors (SB203580, PD98059, and SP600125) on the mediator section was evaluated by ELISA and Luminex liquichip. Results Thrombin 0.2 U/ml induced the elevated expression of PAR1, PAR2, PAR3, and PAR4, as well as the increasing level of phospho-IκBα, phospho-SAPK/JNK MAPK, phospho-P38 MAPK (Thr180/Tyr182), and phospho-ERK1/2 MAPK (p44/42) in P815. Secretion of vascular endothelial growth factor (VEGF), tumor necrosis factor-α (TNF-α), interleukin- (IL-) 2, IL-6, chemokine ligand- (CCL-) 2, chemokine (C-X-C motif) ligand- (CXCL-) 1, and CXCL-5 from P815 increased apparently; this effect could be diminished by hirudin, whereas SCH79797 and MAPK inhibitors (SB203580, PD98059, and SP600125) diminish the secretions with weaker effect. Conclusion We found the expression of PAR mRNA in P815, activation of signaling pathways of nuclear factor-kappaB (NF-κB), and mitogen-activated protein kinases (MAPKs) including C-Jun NH2-terminal kinase (JNK), P38, and extracellular signal-regulated kinase 1/2 (ERK1/2), and the release of multiple inflammatory mediators stimulated by thrombin, as well as the inhibition of the inflammatory releases by hirudin, SCH79797, and MAPK inhibitors including SB203580, PD98059, and SP600125.
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Weiskirchen R, Meurer SK, Liedtke C, Huber M. Mast Cells in Liver Fibrogenesis. Cells 2019; 8:E1429. [PMID: 31766207 PMCID: PMC6912398 DOI: 10.3390/cells8111429] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/05/2019] [Accepted: 11/10/2019] [Indexed: 01/10/2023] Open
Abstract
Mast cells (MCs) are immune cells of the myeloid lineage that are present in the connective tissue throughout the body and in mucosa tissue. They originate from hematopoietic stem cells in the bone marrow and circulate as MC progenitors in the blood. After migration to various tissues, they differentiate into their mature form, which is characterized by a phenotype containing large granules enriched in a variety of bioactive compounds, including histamine and heparin. These cells can be activated in a receptor-dependent and -independent manner. Particularly, the activation of the high-affinity immunoglobulin E (IgE) receptor, also known as FcεRI, that is expressed on the surface of MCs provoke specific signaling cascades that leads to intracellular calcium influx, activation of different transcription factors, degranulation, and cytokine production. Therefore, MCs modulate many aspects in physiological and pathological conditions, including wound healing, defense against pathogens, immune tolerance, allergy, anaphylaxis, autoimmune defects, inflammation, and infectious and other disorders. In the liver, MCs are mainly associated with connective tissue located in the surrounding of the hepatic arteries, veins, and bile ducts. Recent work has demonstrated a significant increase in MC number during hepatic injury, suggesting an important role of these cells in liver disease and progression. In the present review, we summarize aspects of MC function and mediators in experimental liver injury, their interaction with other hepatic cell types, and their contribution to the pathogenesis of fibrosis.
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Affiliation(s)
- Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), University Hospital, RWTH Aachen University, D-52074 Aachen, Germany;
| | - Steffen K. Meurer
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), University Hospital, RWTH Aachen University, D-52074 Aachen, Germany;
| | - Christian Liedtke
- Department of Internal Medicine III, University Hospital, RWTH Aachen University, D-52074 Aachen, Germany;
| | - Michael Huber
- Institute of Biochemistry and Molecular Immunology, Medical Faculty, RWTH Aachen University, D-52074 Aachen, Germany
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Meng J, Wang J, Buddenkotte J, Buhl T, Steinhoff M. Role of SNAREs in Atopic Dermatitis–Related Cytokine Secretion and Skin-Nerve Communication. J Invest Dermatol 2019; 139:2324-2333. [DOI: 10.1016/j.jid.2019.04.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 04/08/2019] [Accepted: 04/23/2019] [Indexed: 01/11/2023]
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