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Wu Z, Sun J, Liao Z, Sun T, Huang L, Qiao J, Ling C, Chen C, Zhang B, Wang H. Activation of PAR1 contributes to ferroptosis of Schwann cells and inhibits regeneration of myelin sheath after sciatic nerve crush injury in rats via Hippo-YAP/ACSL4 pathway. Exp Neurol 2025; 384:115053. [PMID: 39542339 DOI: 10.1016/j.expneurol.2024.115053] [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: 08/16/2024] [Revised: 11/06/2024] [Accepted: 11/09/2024] [Indexed: 11/17/2024]
Abstract
OBJECTIVE Peripheral nerve injury (PNI) is characterized by high incidence and sequela rate. Recently, there was increasing evidence that has shown ferroptosis may impede functional recovery. Our objective is to explore the novel mechanism that regulates ferroptosis after PNI. METHODS LC-MS/MS proteomics was used to explore the possible differential signals, while PCR array was performed to investigate the differential factors. Besides, we also tried to activate or inhibit the key factors and then observe the level of ferroptosis. Regeneration of myelin sheath was finally examined in vivo via transmission electron microscopy. RESULTS Proteomics analysis suggested coagulation signal was activated after sciatic nerve crush injury, in which high expression of F2 (encoding thrombin) and F2r (encoding PAR1) were observed. Both thrombin and PAR1-targeted activator TRAP6 can induce ferroptosis in RSC96 cells, which can be rescued by Vorapaxar (PAR1 targeted inhibitor) in vitro. Further PCR array revealed that activation of PAR1 induced ferroptosis in RSC96 cells by increasing expression of YAP and ACSL4. Immunofluorescence of sciatic nerve confirmed that the expression of YAP and ACSL4 were simultaneously reduced after PAR1 inhibition, which may contribute to myelin regeneration after injury in SD rats. CONCLUSION Inhibition of PAR1 can relieve ferroptosis after sciatic nerve crush injury in SD rats through Hippo-YAP/ACSL4 pathway, thereby regulating myelin regeneration after injury. In summary, PAR1/Hippo-YAP/ACSL4 pathway may be a promising therapeutic target for promoting functional recovery post-sciatic crush injury.
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Affiliation(s)
- Zhimin Wu
- Department of Neurosurgery, the Third Affiliated Hospital, Sun Yat-Sen University, 600 Tian He Road, Tian He District, Guangzhou, Guangdong 510630, China.
| | - Jun Sun
- Department of Neurosurgery, the Third Affiliated Hospital, Sun Yat-Sen University, 600 Tian He Road, Tian He District, Guangzhou, Guangdong 510630, China.
| | - Zhi Liao
- Department of Neurosurgery, the Third Affiliated Hospital, Sun Yat-Sen University, 600 Tian He Road, Tian He District, Guangzhou, Guangdong 510630, China.
| | - Tao Sun
- Department of Neurosurgery, the Third Affiliated Hospital, Sun Yat-Sen University, 600 Tian He Road, Tian He District, Guangzhou, Guangdong 510630, China.
| | - Lixin Huang
- Department of Neurosurgery, the Third Affiliated Hospital, Sun Yat-Sen University, 600 Tian He Road, Tian He District, Guangzhou, Guangdong 510630, China.
| | - Jia Qiao
- Department of Rehabilitation Medicine, the Third Affiliated Hospital, Sun Yat-Sen University, 600 Tian He Road, Tian He District, Guangzhou, Guangdong 510630, China.
| | - Cong Ling
- Department of Neurosurgery, the Third Affiliated Hospital, Sun Yat-Sen University, 600 Tian He Road, Tian He District, Guangzhou, Guangdong 510630, China.
| | - Chuan Chen
- Department of Neurosurgery, the Third Affiliated Hospital, Sun Yat-Sen University, 600 Tian He Road, Tian He District, Guangzhou, Guangdong 510630, China.
| | - Baoyu Zhang
- Department of Neurosurgery, the Third Affiliated Hospital, Sun Yat-Sen University, 600 Tian He Road, Tian He District, Guangzhou, Guangdong 510630, China.
| | - Hui Wang
- Department of Neurosurgery, the Third Affiliated Hospital, Sun Yat-Sen University, 600 Tian He Road, Tian He District, Guangzhou, Guangdong 510630, China.
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Man C, An Y, Wang GX, Mao EQ, Ma L. Recent Advances in Pathogenesis and Anticoagulation Treatment of Sepsis-Induced Coagulopathy. J Inflamm Res 2025; 18:737-750. [PMID: 39845020 PMCID: PMC11752821 DOI: 10.2147/jir.s495223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2024] [Accepted: 12/31/2024] [Indexed: 01/24/2025] Open
Abstract
Coagulopathy in sepsis is common and is associated with high mortality. Although immunothrombosis is necessary for infection control, excessive thrombus formation can trigger a systemic thrombo-inflammatory response. Immunothrombosis plays a core role in sepsis-induced coagulopathy, and research has revealed a complex interplay between inflammation and coagulation. Different mechanisms underlying sepsis-related coagulopathy are discussed, including factors contributing to the imbalance of pro- and anticoagulation relevant to endothelial cells. The potential therapeutic implications of anticoagulants on these mechanisms are discussed. This review contributes to our understanding of the pathogenesis of coagulopathy in patients with sepsis. Recent studies suggest that endothelial cells play an important role in immunoregulation and hemostasis. Meanwhile, the non-anticoagulation effects of anticoagulants, especially heparin, which act in the pathogenesis of coagulopathy in septic patients, have been partially revealed. We believe that further insights into the pathogenesis of sepsis-induced coagulopathy will help physicians evaluate patient conditions effectively, leading to advanced early recognition and better decision-making in the treatment of sepsis.
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Affiliation(s)
- Chit Man
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, People’s Republic of China
| | - Yuan An
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, People’s Republic of China
| | - Guo-Xin Wang
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, People’s Republic of China
| | - En-Qiang Mao
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, People’s Republic of China
| | - Li Ma
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, People’s Republic of China
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Healy LD, Fernández JA, Aiolfi R, Mosnier LO, Griffin JH. An orthosteric/allosteric bivalent peptide agonist comprising covalently linked protease-activated receptor-derived peptides mimics in vitro and in vivo activities of activated protein C. J Thromb Haemost 2024; 22:2039-2051. [PMID: 38670314 PMCID: PMC11610403 DOI: 10.1016/j.jtha.2024.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/22/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024]
Abstract
BACKGROUND Activated protein C (APC) has anticoagulant and cytoprotective cell-signaling activities, which often require protease-activated receptor (PAR) 1 and PAR3 and PAR cleavages at noncanonical sites (R46-N47 and R41-G42, respectively). Some PAR1-derived (P1) peptides and PAR3-derived (P3) peptides, eg, P1-47-66 and P3-42-65, mimic APC's cell signaling. In anti-inflammatory assays, these 2 peptides at low concentrations synergistically attenuate cellular inflammation. OBJECTIVES To determine whether a P1 peptide covalently linked to a P3 peptide mimics APC's anti-inflammatory and endothelial barrier stabilization activities. METHODS Anti-inflammatory assays employed stimulated THP-1 cells and caspase-1 measurements. Cultured human EA.hy926 or murine aortic endothelial cells (ECs) exposed to thrombin were monitored for transendothelial electrical resistance. Bivalent covalently linked P1:P3 peptides were studied for APC-like activities. RESULTS In anti-inflammatory assays, P1-47-55 was as active as P1-47-66 and some P3 peptides (eg, P3-44-54 and P3-51-65) were as active as P3-42-65. The bivalent P1:P3 peptide comprising P1-47-55-(Gly[10 residues])-P3-51-65 (designated "G10 peptide") was more potently anti-inflammatory than the P1 or P3 peptide alone. In transendothelial electrical resistance studies of thrombin-challenged ECs, P1-47-55 and the G10 peptide mimicked APC's protective actions. In dose-response studies, the G10 peptide was more potent than the P1-47-55 peptide. In murine EC studies, the murine PAR-sequence-derived G10 peptide mimicked murine APC's activity. Anti-PAR1 and anti-PAR3 antibodies, but not anti-endothelial protein C receptor antibodies, abated G10's cytoprotection, showing that G10's actions involve PAR1:PAR3. G10 significantly increased survival in murine endotoxemia. CONCLUSION The PAR-sequence-derived G10 peptide is a bivalent agonist that mimics APC's cytoprotective, anti-inflammatory, and endothelial barrier-stabilizing actions and APC's protection against endotoxemic mortality.
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Affiliation(s)
- Laura D Healy
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - José A Fernández
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Roberto Aiolfi
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Laurent O Mosnier
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - John H Griffin
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA.
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4
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Torosian TA, Barsukova AI, Chichkova NV, Vartapetian AB. Phytaspase Does Not Require Proteolytic Activity for Its Stress-Induced Internalization. Int J Mol Sci 2024; 25:6729. [PMID: 38928451 PMCID: PMC11203471 DOI: 10.3390/ijms25126729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 05/31/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Phytaspases differ from other members of the plant subtilisin-like protease family by having rare aspartate cleavage specificity and unusual localization dynamics. Phytaspases are secreted from healthy plant cells but are re-internalized upon perception of death-inducing stresses. Although proteolytic activity is required for the secretion of plant subtilases, its requirement for the retrograde transportation of phytaspases is currently unknown. To address this issue, we employed an approach to complement in trans the externalization of a prodomain-less form of Nicotiana tabacum phytaspase (NtPhyt) with the free prodomain in Nicotiana benthamiana leaf cells. Using this approach, the generation of the proteolytically active NtPhyt and its transport to the extracellular space at a level comparable to that of the native NtPhyt (synthesized as a canonical prodomain-containing precursor protein) were achieved. The application of this methodology to NtPhyt with a mutated catalytic Ser537 residue resulted in the secretion of the inactive, although processed (prodomain-free), protein as well. Notably, the externalized NtPhyt Ser537Ala mutant was still capable of retrograde transportation into plant cells upon the induction of oxidative stress. Our data thus indicate that the proteolytic activity of NtPhyt is dispensable for stress-induced retrograde transport of the enzyme.
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Affiliation(s)
- Tatevik A. Torosian
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow 199991, Russia; (T.A.T.); (A.I.B.)
| | - Anastasia I. Barsukova
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow 199991, Russia; (T.A.T.); (A.I.B.)
| | - Nina V. Chichkova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 199991, Russia;
| | - Andrey B. Vartapetian
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 199991, Russia;
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5
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Sharma S, Ursery LT, Bharathi V, Miles SD, Williams WA, Elzawam AZ, Schmedes CM, Egnatz GJ, Fernandez JA, Palumbo JS, Griffin JH, Mackman N, Antoniak S. APC-PAR1-R46 signaling limits CXCL1 expression during poly IC-induced airway inflammation in mice. J Thromb Haemost 2023; 21:3279-3282. [PMID: 37634652 DOI: 10.1016/j.jtha.2023.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/29/2023]
Affiliation(s)
- Swati Sharma
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Lauryn T Ursery
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Vanthana Bharathi
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Stephen D Miles
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Willie A Williams
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Aymen Z Elzawam
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Clare M Schmedes
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Grant J Egnatz
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Jose A Fernandez
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Joseph S Palumbo
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - John H Griffin
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA; Department of Medicine, University of California San Diego, San Diego, California, USA
| | - Nigel Mackman
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Silvio Antoniak
- UNC Blood Research Center, UNC Lineberger Comprehensive Cancer Center, UNC McAllister Heart Institute, Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
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Sim MMS, Shiferawe S, Wood JP. Novel strategies in antithrombotic therapy: targeting thrombosis while preserving hemostasis. Front Cardiovasc Med 2023; 10:1272971. [PMID: 37937289 PMCID: PMC10626538 DOI: 10.3389/fcvm.2023.1272971] [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: 08/04/2023] [Accepted: 10/06/2023] [Indexed: 11/09/2023] Open
Abstract
Antithrombotic therapy is a delicate balance between the benefits of preventing a thrombotic event and the risks of inducing a major bleed. Traditional approaches have included antiplatelet and anticoagulant medications, require careful dosing and monitoring, and all carry some risk of bleeding. In recent years, several new targets have been identified, both in the platelet and coagulation systems, which may mitigate this bleeding risk. In this review, we briefly describe the current state of antithrombotic therapy, and then present a detailed discussion of the new generation of drugs that are being developed to target more safely existing or newly identified pathways, alongside the strategies to reverse direct oral anticoagulants, showcasing the breadth of approaches. Combined, these exciting advances in antithrombotic therapy bring us closer than we have ever been to the "holy grail" of the field, a treatment that separates the hemostatic and thrombotic systems, preventing clots without any concurrent bleeding risk.
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Affiliation(s)
- Martha M. S. Sim
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, United States
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
| | - Semekidus Shiferawe
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
| | - Jeremy P. Wood
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, United States
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
- Division of Cardiovascular Medicine Gill Heart and Vascular Institute, University of Kentucky, Lexington, KY, United States
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7
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Jing-Lun Z, Shuang C, Li-Mei Z, Xiao-Dong L. YKL-40 promotes chemokine expression following drug-induced liver injury via TF-PAR1 pathway in mice. Front Pharmacol 2023; 14:1205062. [PMID: 37693903 PMCID: PMC10484592 DOI: 10.3389/fphar.2023.1205062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 08/11/2023] [Indexed: 09/12/2023] Open
Abstract
Background: The inflammatory factor YKL-40 is associated with various inflammatory diseases and is key to remodeling inflammatory cells and tissues. YKL-40 (Chi3l1) promotes the activation of tissue factor (TF), leading to intrahepatic vascular coagulation (IAOC) and liver injury. TF is a key promoter of the exogenous coagulation cascade and is also involved in several signaling involving cell proliferation, apoptosis, charring, migration and inflammatory diseases pathways. However, the effect of YKL-40-induced TF-PAR1 pathway on the expression of downstream chemokines remains unknown. Methods: We established a liver injury model using Concanavalin A (ConA) in C57 BL/6 mice. By adopting various experimental techniques, the effect of YKL-40 induced TF-PAR1 pathway on the expression of downstream chemokine ligand 2 (CCL2) and IP-10 was verified. Results: We found that overexpression of YKL-40 increased the expression of TF, protease-activated receptor 1 (PAR1), CCL2 and IP-10 in mice and exacerbated the severity of liver injury. However, blocking the expression of TF significantly reversed the extent of liver injury. Conclusion: We found that YKL-40 promotes the expression of downstream chemokines ligand 2 (CCL2) and IP-10 by activating the TF-PAR1 pathway, leading to increased recruitment of inflammatory cells and exacerbating the progression of liver injury. This provides a new approach for the clinical treatment of drug-induced liver injury.
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Affiliation(s)
- Zhan Jing-Lun
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyan, China
- Department of the Second Clinical Pharmacy, School of Pharmacy, China Medical University, Shenyang, China
| | - Chai Shuang
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyan, China
- Department of the Second Clinical Pharmacy, School of Pharmacy, China Medical University, Shenyang, China
| | - Zhao Li-Mei
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyan, China
- Department of the Second Clinical Pharmacy, School of Pharmacy, China Medical University, Shenyang, China
| | - Liu Xiao-Dong
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyan, China
- Department of the Second Clinical Pharmacy, School of Pharmacy, China Medical University, Shenyang, China
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8
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Fragopoulou E, Gkotsi K, Petsini F, Gioti K, Kalampaliki AD, Lambrinidis G, Kostakis IK, Tenta R. Synthesis and Biological Evaluation of Resveratrol Methoxy Derivatives. Molecules 2023; 28:5547. [PMID: 37513418 PMCID: PMC10386404 DOI: 10.3390/molecules28145547] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/13/2023] [Accepted: 07/15/2023] [Indexed: 07/30/2023] Open
Abstract
Resveratrol, a naturally occurring stilbene, exhibits numerous beneficial health effects. Various studies have demonstrated its diverse biological actions, including anti-oxidant, anti-inflammatory, and anti-platelet properties, thereby supporting its potential for cardio protection, neuroprotection, and anti-cancer activity. However, a significant limitation of resveratrol is its weak bioavailability. To overcome this challenge, multiple research groups have investigated the synthesis of new resveratrol derivatives to enhance bioavailability and pharmacological activities. Nevertheless, there are limited data on the effects of resveratrol derivatives on platelet function. Therefore, the objective of this study was to synthesize resveratrol methoxy derivatives and evaluate their anti-platelet and anti-proliferative activity. Platelet-rich plasma (PRP) obtained from healthy volunteers was utilized to assess the derivatives' ability to inhibit platelet aggregation induced by platelet activating factor (PAF), adenosine diphosphate (ADP), and thrombin receptor activating peptide (TRAP). Additionally, the derivatives' anti-tumor activity was evaluated against the proliferation of PC-3 and HCT116 cells. The results revealed that some methoxy derivatives of resveratrol exhibited comparable or even superior anti-platelet activity compared to the original compound. The most potent derivative was the 4'-methoxy derivative, which demonstrated approximately 2.5 orders of magnitude higher anti-platelet activity against TRAP-induced platelet aggregation, indicating its potential as an anti-platelet agent. Concerning in silico studies, the 4'-methyl group of 4'-methoxy derivative is oriented similarly to the fluorophenyl-pyridyl group of Vorapaxar, buried in a hydrophobic cavity. In terms of their anti-tumor activity, 3-MRESV exhibited the highest potency in PC-3 cells, while 3,4'-DMRESV and TMRESV showed the greatest efficacy in HCT116 cells. In conclusion, methoxy derivatives of resveratrol possess similar or improved anti-platelet and anti-cancer effects, thereby holding potential as bioactive compounds in various pathological conditions.
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Affiliation(s)
- Elizabeth Fragopoulou
- Department of Nutrition and Dietetics, Harokopio University, 70 Eleftheriou Venizelou Avenue Kallithea, 17676 Athens, Greece
| | - Katerina Gkotsi
- Department of Nutrition and Dietetics, Harokopio University, 70 Eleftheriou Venizelou Avenue Kallithea, 17676 Athens, Greece
| | - Filio Petsini
- Department of Nutrition and Dietetics, Harokopio University, 70 Eleftheriou Venizelou Avenue Kallithea, 17676 Athens, Greece
| | - Katerina Gioti
- Department of Nutrition and Dietetics, Harokopio University, 70 Eleftheriou Venizelou Avenue Kallithea, 17676 Athens, Greece
| | - Amalia D Kalampaliki
- Department of Pharmacy, Division of Pharmaceutical Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - George Lambrinidis
- Department of Pharmacy, Division of Pharmaceutical Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - Ioannis K Kostakis
- Department of Pharmacy, Division of Pharmaceutical Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - Roxane Tenta
- Department of Nutrition and Dietetics, Harokopio University, 70 Eleftheriou Venizelou Avenue Kallithea, 17676 Athens, Greece
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9
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Künze G, Isermann B. Targeting biased signaling by PAR1: function and molecular mechanism of parmodulins. Blood 2023; 141:2675-2684. [PMID: 36952648 PMCID: PMC10646804 DOI: 10.1182/blood.2023019775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/01/2023] [Accepted: 03/21/2023] [Indexed: 03/25/2023] Open
Abstract
The G protein-coupled receptor (GPCR) protease-activated receptor 1 (PAR1) is a therapeutic target that was originally pursued with the aim of restricting platelet activation and the burden of cardiovascular diseases. In clinical studies, the use of orthosteric PAR1 inhibitors was associated with an increased risk of hemorrhage, including intracranial hemorrhage. Because (1) PAR1 is expressed by various cell types, including endothelial cells, (2) conveys in mice a physiological indispensable function for vascular development during embryogenesis, and (3) is subject to biased signaling dependent on the activating proteases, orthosteric PAR1 inhibition may be associated with unwanted side effects. Alternatively, the protease-activated protein C (aPC) and its variants can promote valuable anti-inflammatory signaling via PAR1. Most recently, small molecule allosteric modulators of PAR1 signaling, called parmodulins, have been developed. Parmodulins inhibit coagulation and platelet activation yet maintain cytoprotective effects typically provoked by PAR1 signaling upon the activation by aPC. In this study, we review the discovery of parmodulins and their preclinical data, summarize the current knowledge about their mode of action, and compare the structural interaction of parmodulin and PAR1 with that of other intracellularly binding allosteric GPCR modulators. Thus, we highlight the pharmaceutical potential and challenges associated with the future development of parmodulins.
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Affiliation(s)
- Georg Künze
- Institute for Drug Discovery, Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
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10
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Khimani F, Wolf AJ, Yoon B, Blancke A, Gerhart C, Endsley D, Dougherty A, Ray AK, Yango AF, Flynn SD, Lip GYH, Gonzalez SA, Sathyamoorthy M. Therapeutic considerations for prevention and treatment of thrombotic events in COVID-19. THROMBOSIS UPDATE 2023; 10:100126. [PMID: 38620822 PMCID: PMC9650687 DOI: 10.1016/j.tru.2022.100126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 10/18/2022] [Accepted: 11/01/2022] [Indexed: 11/13/2022] Open
Abstract
Thrombosis is a known complication of SARS-CoV-2 infection, particularly within a severely symptomatic subset of patients with COVID-19 disease, in whom an aggressive host immune response leads to cytokine storm syndrome (CSS). The incidence of thrombotic events coinciding with CSS may contribute to the severe morbidity and mortality observed in association with COVID-19. This review provides an overview of pharmacologic approaches based upon an emerging understanding of the mechanisms responsible for thrombosis across a spectrum of COVID-19 disease involving an interplay between immunologic and pro-thrombotic events, including endothelial injury, platelet activation, altered coagulation pathways, and impaired fibrinolysis.
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Affiliation(s)
- Faria Khimani
- Sathyamoorthy Laboratory, Burnett School of Medicine at TCU, Fort Worth, TX, United States
- Burnett School of Medicine at TCU, Fort Worth, TX, United States
| | - Adam J Wolf
- Sathyamoorthy Laboratory, Burnett School of Medicine at TCU, Fort Worth, TX, United States
- Burnett School of Medicine at TCU, Fort Worth, TX, United States
| | - Braian Yoon
- Sathyamoorthy Laboratory, Burnett School of Medicine at TCU, Fort Worth, TX, United States
- Burnett School of Medicine at TCU, Fort Worth, TX, United States
| | - Amy Blancke
- Consultants in Cardiovascular Medicine and Science - Fort Worth, PLLC, Fort Worth, TX, United States
| | - Coltin Gerhart
- Sathyamoorthy Laboratory, Burnett School of Medicine at TCU, Fort Worth, TX, United States
- Burnett School of Medicine at TCU, Fort Worth, TX, United States
| | - Dakota Endsley
- Sathyamoorthy Laboratory, Burnett School of Medicine at TCU, Fort Worth, TX, United States
- Burnett School of Medicine at TCU, Fort Worth, TX, United States
| | - Alleyna Dougherty
- Sathyamoorthy Laboratory, Burnett School of Medicine at TCU, Fort Worth, TX, United States
- Burnett School of Medicine at TCU, Fort Worth, TX, United States
| | - Anish K Ray
- Department of Pediatrics, Burnett School of Medicine at TCU, Fort Worth, TX, United States and Cook Children's Medical Center, Fort Worth, TX, United States
| | - Angelito F Yango
- Department of Medicine, Burnett School of Medicine at TCU, Fort Worth, TX, United States
- Annette C. and Harold C. Simmons Transplant Institute, Baylor All Saints Medical Center, Fort Worth, TX, United States
| | - Stuart D Flynn
- Burnett School of Medicine at TCU, Fort Worth, TX, United States
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool Heart & Chest Hospital, Liverpool, United Kingdom, and Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Stevan A Gonzalez
- Department of Medicine, Burnett School of Medicine at TCU, Fort Worth, TX, United States
- Annette C. and Harold C. Simmons Transplant Institute, Baylor All Saints Medical Center, Fort Worth, TX, United States
| | - Mohanakrishnan Sathyamoorthy
- Sathyamoorthy Laboratory, Burnett School of Medicine at TCU, Fort Worth, TX, United States
- Department of Medicine, Burnett School of Medicine at TCU, Fort Worth, TX, United States
- Consultants in Cardiovascular Medicine and Science - Fort Worth, PLLC, Fort Worth, TX, United States
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11
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Mörtberg J, Salzinger B, Lundwall K, Edfors R, Jacobson SH, Wallén HN, Jernberg T, Baron T, Erlinge D, Andell P, James S, Eggers KM, Hjort M, Kahan T, Lundman P, Tornvall P, Rezeli M, Marko-Varga G, Lindahl B, Spaak J. Prognostic importance of biomarkers associated with haemostatic, vascular and endothelial disturbances in acute coronary syndrome patients in relation to kidney function. Int J Cardiol 2023; 373:64-71. [PMID: 36476672 DOI: 10.1016/j.ijcard.2022.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/15/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Patients with kidney failure have a high risk for cardiovascular events. We aimed to evaluate the prognostic importance of selected biomarkers related to haemostasis, endothelial function, and vascular regulation in patients with acute coronary syndrome (ACS), and to study whether this association differed in patients with renal dysfunction. METHODS Plasma was collected in 1370 ACS patients included between 2008 and 2015. Biomarkers were analysed using a Proximity Extension Assay and a Multiple Reaction Monitoring mass spectrometry assay. To reduce multiplicity, biomarkers correlating with eGFR were selected a priori among 36 plasma biomarkers reflecting endothelial and vascular function, and haemostasis. Adjusted Cox regression were used to study their association with the composite outcome of myocardial infarction, ischemic stroke, heart failure or death. Interaction with eGFR strata above or below 60 ml/min/1.73 m2 was tested. RESULTS Tissue factor, proteinase-activated receptor, soluble urokinase plasminogen activator surface receptor (suPAR), thrombomodulin, adrenomedullin, renin, and angiotensinogen correlated inversely with eGFR and were selected for the Cox regression. Mean follow-up was 5.2 years during which 428 events occurred. Adrenomedullin, suPAR, and renin were independently associated with the composite outcome. Adrenomedullin showed interaction with eGFR strata (p = 0.010) and was associated with increased risk (HR 1.88; CI 1.44-2.45) only in patients with eGFR ≥60 ml/min/ 1.73 m2. CONCLUSIONS Adrenomedullin, suPAR, and renin were associated with the composite outcome in all. Adrenomedullin, involved in endothelial protection, showed a significant interaction with renal function and outcome, and was associated with the composite outcome only in patients with preserved kidney function.
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Affiliation(s)
- Josefin Mörtberg
- Centre for Clinical Research, Vastmanland Hospital Vasteras, Region Vastmanland - Uppsala University, Sweden; Division of Nephrology, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden.
| | - Barbara Salzinger
- Division of Nephrology, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Kristina Lundwall
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Robert Edfors
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Stefan H Jacobson
- Division of Nephrology, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Håkan N Wallén
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Tomas Jernberg
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Tomasz Baron
- Department of Medical Sciences, Cardiology, Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - David Erlinge
- Department of Cardiology, Clinical Sciences, Lund University, Lund, Sweden
| | - Pontus Andell
- Unit of Cardiology, Department of Medicine, Karolinska Institutet, Heart and Vascular Division, Karolinska University Hospital, Stockholm, Sweden
| | - Stefan James
- Department of Medical Sciences, Cardiology, Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - Kai M Eggers
- Department of Medical Sciences, Cardiology, Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - Marcus Hjort
- Department of Medical Sciences, Cardiology, Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - Thomas Kahan
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Pia Lundman
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Per Tornvall
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Melinda Rezeli
- Clinical Protein Science & Imaging, Department of Biomedical Engineering, Lund University, BMC D13, Lund SE-221 84, Sweden
| | - György Marko-Varga
- Clinical Protein Science & Imaging, Department of Biomedical Engineering, Lund University, BMC D13, Lund SE-221 84, Sweden
| | - Bertil Lindahl
- Department of Medical Sciences, Cardiology, Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - Jonas Spaak
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
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12
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Friebel J, Witkowski M, Wegner M, Blöbaum L, Lammel S, Schencke PA, Jakobs K, Puccini M, Reißner D, Steffens D, Moos V, Schutheiss HP, Landmesser U, Rauch U. Cytotoxic CD8 + T Cells Are Involved in the Thrombo-Inflammatory Response during First-Diagnosed Atrial Fibrillation. Cells 2022; 12:cells12010141. [PMID: 36611934 PMCID: PMC9818535 DOI: 10.3390/cells12010141] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/23/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Atrial myopathy and atrial fibrillation (AF) accompany thrombo-inflammation. This facilitates disease progression and promotes major adverse cardiovascular events (MACEs). Thrombin receptor (protease-activated receptor 1, PAR1) signalling is central in mediating thrombo-inflammation. We hypothesised that PAR1 signalling links coagulation and inflammation through cytotoxic CD8+ T lymphocytes in patients presenting with first-diagnosed AF (FDAF). METHODS A total of 210 patients were studied. We included data and blood samples from patients presenting with FDAF (n = 160), cardiac tissue from patients with paroxysmal AF (n = 32) and 20 controls. RESULTS During early AF, a pro-inflammatory and cytotoxic subset of T lymphocytes (CD8+) circulated more frequently when compared to patients with chronic cardiovascular disease but without AF, accompanied by elevated plasma levels of CD8+ effector molecules, which corresponded to biomarkers of adverse cardiac remodelling and atrial dysfunction. Activation of tissue factor (TF) and PAR1 was associated with pro-inflammatory and cytotoxic effector functions. PAR1-related CD8+ cell activation was more frequent in FDAF patients that experienced a MACE. CONCLUSIONS In patients with FDAF, the TF-factor Xa-factor IIa-axis contributes to thrombo-inflammation via PAR1 in CD8+ T cells. Intervening in this cascade might be a promising synergistic approach to reducing disease progression and the vascular complications of AF.
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Affiliation(s)
- Julian Friebel
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
- Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
- Department of Cardiac Anesthesiology and Intensive Care Medicine, German Heart Center, 13353 Berlin, Germany
| | - Marco Witkowski
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
- Department of Cardiovascular & Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Max Wegner
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | - Leon Blöbaum
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | - Stella Lammel
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | - Philipp-Alexander Schencke
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | - Kai Jakobs
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
| | - Marianna Puccini
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | - Daniela Reißner
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | - Daniel Steffens
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | - Verena Moos
- Medical Department I, Gastroenterology, Infectious Diseases and Rheumatology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | | | - Ulf Landmesser
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
- Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
| | - Ursula Rauch
- Charité Center 11—Department of Cardiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
- Correspondence: ; Tel.: +49-30-450-513794
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13
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Novel approaches to antiplatelet therapy. Biochem Pharmacol 2022; 206:115297. [DOI: 10.1016/j.bcp.2022.115297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/05/2022] [Accepted: 10/05/2022] [Indexed: 11/20/2022]
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14
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Bernasconi L, Schicchi A, Pirozzolo R, Negrini V, Scaravaggi G, Lonati D, Petrolini VM, Locatelli CA. Coronary thrombosis after European adder bite in a patient on dual antiplatelet therapy: A case report. Toxicon 2022; 220:106961. [DOI: 10.1016/j.toxicon.2022.106961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/20/2022] [Accepted: 10/28/2022] [Indexed: 11/08/2022]
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15
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Abstract
COVID-19 is a primary respiratory illness that is frequently complicated by systemic involvement of the vasculature. Vascular involvement leads to an array of complications ranging from thrombosis to pulmonary edema secondary to loss of barrier function. This review will address the vasculopathy of COVID-19 with a focus on the role of the endothelium in orchestrating the systemic response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. The endothelial receptor systems and molecular pathways activated in the setting of COVID-19 and the consequences of these inflammatory and prothrombotic changes on endothelial cell function will be discussed. The sequelae of COVID-19 vascular involvement at the level of organ systems will also be addressed, with an emphasis on the pulmonary vasculature but with consideration of effects on other vascular beds. The dramatic changes in endothelial phenotypes associated with COVID-19 has enabled the identification of biomarkers that could help guide therapy and predict outcomes. Knowledge of vascular pathogenesis in COVID-19 has also informed therapeutic approaches that may control its systemic sequelae. Because our understanding of vascular response in COVID-19 continues to evolve, we will consider areas of controversy, such as the extent to which SARS-CoV-2 directly infects endothelium and the degree to which vascular responses to SARS-CoV-2 are unique or common to those of other viruses capable of causing severe respiratory disease. This conceptual framework describing how SARS-CoV-2 infection affects endothelial inflammation, prothrombotic transformation, and barrier dysfunction will provide a context for interpreting new information as it arises addressing the vascular complications of COVID-19.
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Affiliation(s)
| | | | - Alec A Schmaier
- Division of Hemostasis and Thrombosis and
- Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
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16
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Francis LRA, Millington-Burgess SL, Rahman T, Harper MT. Q94 is not a selective modulator of proteinase-activated receptor 1 (PAR1) in platelets. Platelets 2022; 33:1090-1095. [PMID: 35417662 DOI: 10.1080/09537104.2022.2026911] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Thrombin is a potent platelet activator, acting through proteinase-activated receptors -1 and -4 (PAR1 and PAR4). Of these, PAR-1 is activated more rapidly and by lower thrombin concentrations. Consequently, PAR-1 has been extensively investigated as a target for anti-platelet drugs to prevent myocardial infarction. Q94 has been reported to act as an allosteric modulator of PAR1, potently and selectively inhibiting PAR1-Gαq coupling in multiple cell lines, but its effects on human platelet activation have not been previously studied. Platelet Ca2+ signaling, integrin αIIbβ3 activation and α-granule secretion were monitored following stimulation by a PAR1-activating peptide (PAR1-AP). Although Q94 inhibited these responses, its potency was low compared to other PAR1 antagonists. In addition, αIIbβ3 activation and α-granule secretion in response to other platelet activators were also inhibited with similar potency. Finally, in endothelial cells, Q94 did not inhibit PAR1-dependent Ca2+ signaling. Our data suggest that Q94 may have PAR1-independent off-target effects in platelets, precluding its use as a selective PAR1 allosteric modulator.
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Affiliation(s)
- Luc R A Francis
- Department of Pharmacology, University of Cambridge, Cambridge, UK
| | | | - Taufiq Rahman
- Department of Pharmacology, University of Cambridge, Cambridge, UK
| | - Matthew T Harper
- Department of Pharmacology, University of Cambridge, Cambridge, UK
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17
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Chiang YC, Wu YS, Kang YF, Wang HC, Tsai MC, Wu CC. 3,5,2′,4′-Tetramethoxystilbene, a fully methylated resveratrol analog, prevents platelet aggregation and thrombus formation by targeting the protease-activated receptor 4 pathway. Chem Biol Interact 2022; 357:109889. [DOI: 10.1016/j.cbi.2022.109889] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/01/2022] [Accepted: 03/09/2022] [Indexed: 12/30/2022]
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18
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Popescu NI, Lupu C, Lupu F. Disseminated intravascular coagulation and its immune mechanisms. Blood 2022; 139:1973-1986. [PMID: 34428280 PMCID: PMC8972096 DOI: 10.1182/blood.2020007208] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 06/02/2021] [Indexed: 11/26/2022] Open
Abstract
Disseminated intravascular coagulation (DIC) is a syndrome triggered by infectious and noninfectious pathologies characterized by excessive generation of thrombin within the vasculature and widespread proteolytic conversion of fibrinogen. Despite diverse clinical manifestations ranging from thrombo-occlusive damage to bleeding diathesis, DIC etiology commonly involves excessive activation of blood coagulation and overlapping dysregulation of anticoagulants and fibrinolysis. Initiation of blood coagulation follows intravascular expression of tissue factor or activation of the contact pathway in response to pathogen-associated or host-derived, damage-associated molecular patterns. The process is further amplified through inflammatory and immunothrombotic mechanisms. Consumption of anticoagulants and disruption of endothelial homeostasis lower the regulatory control and disseminate microvascular thrombosis. Clinical DIC development in patients is associated with worsening morbidities and increased mortality, regardless of the underlying pathology; therefore, timely recognition of DIC is critical for reducing the pathologic burden. Due to the diversity of triggers and pathogenic mechanisms leading to DIC, diagnosis is based on algorithms that quantify hemostatic imbalance, thrombocytopenia, and fibrinogen conversion. Because current diagnosis primarily assesses overt consumptive coagulopathies, there is a critical need for better recognition of nonovert DIC and/or pre-DIC states. Therapeutic strategies for patients with DIC involve resolution of the eliciting triggers and supportive care for the hemostatic imbalance. Despite medical care, mortality in patients with DIC remains high, and new strategies, tailored to the underlying pathologic mechanisms, are needed.
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Affiliation(s)
| | - Cristina Lupu
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK; and
| | - Florea Lupu
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK; and
- Department of Cell Biology
- Department of Pathology, and
- Department of Internal Medicine, Oklahoma University Health Sciences Center, Oklahoma City, OK
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19
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Guo P, Tai Y, Wang M, Sun H, Zhang L, Wei W, Xiang YK, Wang Q. Gα 12 and Gα 13: Versatility in Physiology and Pathology. Front Cell Dev Biol 2022; 10:809425. [PMID: 35237598 PMCID: PMC8883321 DOI: 10.3389/fcell.2022.809425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 01/17/2022] [Indexed: 01/14/2023] Open
Abstract
G protein-coupled receptors (GPCRs), as the largest family of receptors in the human body, are involved in the pathological mechanisms of many diseases. Heterotrimeric G proteins represent the main molecular switch and receive cell surface signals from activated GPCRs. Growing evidence suggests that Gα12 subfamily (Gα12/13)-mediated signaling plays a crucial role in cellular function and various pathological processes. The current research on the physiological and pathological function of Gα12/13 is constantly expanding, Changes in the expression levels of Gα12/13 have been found in a wide range of human diseases. However, the mechanistic research on Gα12/13 is scattered. This review briefly describes the structural sequences of the Gα12/13 isoforms and introduces the coupling of GPCRs and non-GPCRs to Gα12/13. The effects of Gα12/13 on RhoA and other signaling pathways and their roles in cell proliferation, migration, and immune cell function, are discussed. Finally, we focus on the pathological impacts of Gα12/13 in cancer, inflammation, metabolic diseases, fibrotic diseases, and circulatory disorders are brought to focus.
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Affiliation(s)
- Paipai Guo
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
| | - Yu Tai
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
| | - Manman Wang
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
| | - Hanfei Sun
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
| | - Lingling Zhang
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
| | - Wei Wei
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
| | - Yang K Xiang
- Department of Pharmacology, University of California, Davis, Davis, CA, United States.,VA Northern California Health Care System, Mather, CA, United States
| | - Qingtong Wang
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
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20
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Kamel NM, El-Tanbouly DM, Abdallah DM, Sayed HM. PAR1, a therapeutic target for remote lung injury associated with hind limb ischemia/reperfusion: ERK5/KLF2-dependent lung capillary barrier preservation. Chem Biol Interact 2022; 354:109809. [PMID: 35031271 DOI: 10.1016/j.cbi.2022.109809] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/28/2021] [Accepted: 01/05/2022] [Indexed: 11/03/2022]
Abstract
Protease-activated receptor 1 (PAR1) is expressed in pneumocytes and endothelial cells of the alveolar barrier. Its activation by thrombin disrupts the barrier integrity dynamics and induces lung injury in in vitro and in vivo paradigms. Nonetheless, the role of PAR1, as a therapeutic target, in hind limb ischemia/reperfusion (I/R)-mediated remote lung injury has been unclear. Therefore, this study aimed to determine the potential benefit of PAR1 blockade using the selective antagonist SCH79797 in distant lung dysfunction following hind limb I/R injury with special emphasis on the extracellular signal-regulated kinase 5 (ERK5)/Krüppel-like factor 2 (KLF2) axis. Rats were subdivided into control, bilateral hind limb I/R, SCH79797, and SCH79797+BIX02189 (ERK5 inhibitor) groups. PAR1 blockade, ERK5-dependently, alleviated alveolar barrier disruption as evidenced by reductions in both pulmonary systemic leakage of surfactant protein-D and lung fluid accumulation with increase in pulmonary claudin 5, vascular endothelial cadherin, and connexin 37 levels. Such improvements are downstream targets of the ERK5/KLF2-mediated sphingosine-1-phosphate receptor 1 (S1PR1) upregulated expression and pS536-nuclear factor-κB (NF-κB) p65 inhibition. SCH79797 effectively impedes the evoked inflammatory response and oxidative burst by suppressing vascular endothelial growth factor, tumor necrosis factor-α, lipid peroxidation, and neutrophil infiltration while boosting the glutathione antioxidant defense. Accordingly, PAR1 could be a therapeutic target, where its blockade mitigated pulmonary-endothelial barrier disruption via mutual S1PR1 enhancement and NF-κB p65 inhibition following ERK5/KLF2 activation.
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Affiliation(s)
- Nada M Kamel
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Faculty of Pharmacy, Kasr El Aini St., Cairo, 11562, Egypt.
| | - Dalia M El-Tanbouly
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Faculty of Pharmacy, Kasr El Aini St., Cairo, 11562, Egypt.
| | - Dalaal M Abdallah
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Faculty of Pharmacy, Kasr El Aini St., Cairo, 11562, Egypt.
| | - Helmy M Sayed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Faculty of Pharmacy, Kasr El Aini St., Cairo, 11562, Egypt.
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21
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Yao X, Song Y, Wang Z, Bai S, Yu H, Wang Y, Guan Y. Proteinase-activated receptor-1 antagonist attenuates brain injury via regulation of FGL2 and TLR4 after intracerebral hemorrhage in mice. Neuroscience 2022; 490:193-205. [PMID: 35182700 DOI: 10.1016/j.neuroscience.2022.02.012] [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: 09/28/2021] [Revised: 02/07/2022] [Accepted: 02/10/2022] [Indexed: 11/25/2022]
Abstract
Proteinase-activated receptor-1 (PAR1) antagonist plays a protective effect in brain injury. We investigated the potential function and mechanisms of PAR1 antagonist in ICH-induced brain injury. Results showed that PAR1 antagonist protected against neurobehavior deficits, brain edema and BBB integrity in ICH mice via activating JNK/ERK/p38 MAPK signaling pathway at 24h after ICH. In addition, ICH resulted in the increase of FGL2 and TLR4 expression over time, and phosphorylated JNK, ERK and p38 MAPK expression. Suppression of FGL2 and TLR4 alleviated brain injury and decreased the expression of p-JNK, p-ERK, p-p38 MAPK and p-IKKα at 24 h after ICH; while overexpression of them showed the opposite result. Moreover, the protective effect of PAR1 antagonist on ICH-induced brain injury was blocked by FGL2 or TLR4 overexpression, and the levels of p-JNK, p-ERK and p-p38 MAPK were inhibited. Furthermore, PAR1 antagonist combined with TLR4 antagonist markedly alleviated brain injury after ICH at 72h. Overall, PAR1 antagonist protected against short-term brain injury, and the effect of PAR1 antagonist on ICH-induced brain injury was mediated by FGL2 or TLR4.
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Affiliation(s)
- Xiaoying Yao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Yaying Song
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Ze Wang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Shuwei Bai
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Haojun Yu
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Yishu Wang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Yangtai Guan
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.
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22
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Friebel J, Moritz E, Witkowski M, Jakobs K, Strässler E, Dörner A, Steffens D, Puccini M, Lammel S, Glauben R, Nowak F, Kränkel N, Haghikia A, Moos V, Schutheiss HP, Felix SB, Landmesser U, Rauch BH, Rauch U. Pleiotropic Effects of the Protease-Activated Receptor 1 (PAR1) Inhibitor, Vorapaxar, on Atherosclerosis and Vascular Inflammation. Cells 2021; 10:cells10123517. [PMID: 34944024 PMCID: PMC8700178 DOI: 10.3390/cells10123517] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Protease-activated receptor 1 (PAR1) and toll-like receptors (TLRs) are inflammatory mediators contributing to atherogenesis and atherothrombosis. Vorapaxar, which selectively antagonizes PAR1-signaling, is an approved, add-on antiplatelet therapy for secondary prevention. The non-hemostatic, platelet-independent, pleiotropic effects of vorapaxar have not yet been studied. METHODS AND RESULTS Cellular targets of PAR1 signaling in the vasculature were identified in three patient cohorts with atherosclerotic disease. Evaluation of plasma biomarkers (n = 190) and gene expression in endomyocardial biopsies (EMBs) (n = 12) revealed that PAR1 expression correlated with endothelial activation and vascular inflammation. PAR1 colocalized with TLR2/4 in human carotid plaques and was associated with TLR2/4 gene transcription in EMBs. In addition, vorapaxar reduced atherosclerotic lesion size in apolipoprotein E-knock out (ApoEko) mice. This reduction was associated with reduced expression of vascular adhesion molecules and TLR2/4 presence, both in isolated murine endothelial cells and the aorta. Thrombin-induced uptake of oxLDL was augmented by additional TLR2/4 stimulation and abrogated by vorapaxar. Plaque-infiltrating pro-inflammatory cells were reduced in vorapaxar-treated ApoEko mice. A shift toward M2 macrophages paralleled a decreased transcription of pro-inflammatory cytokines and chemokines. CONCLUSIONS PAR1 inhibition with vorapaxar may be effective in reducing residual thrombo-inflammatory event risk in patients with atherosclerosis independent of its effect on platelets.
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Affiliation(s)
- Julian Friebel
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
- Berlin Institute of Health, 10178 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
| | - Eileen Moritz
- Center of Drug Absorption and Transport, Institute of Pharmacology, University Medicine Greifswald, 17489 Greifswald, Germany; (E.M.); (B.H.R.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, 17475 Greifswald, Germany;
| | - Marco Witkowski
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
- Department of Cardiovascular & Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Kai Jakobs
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
| | - Elisabeth Strässler
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
| | - Andrea Dörner
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
- Berlin Institute of Health, 10178 Berlin, Germany
| | - Daniel Steffens
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
| | - Marianna Puccini
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
| | - Stella Lammel
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
| | - Rainer Glauben
- Medical Department I, Gastroenterology, Infectious Diseases and Rheumatology, Charité—University Medicine, 12203 Berlin, Germany; (R.G.); (F.N.); (V.M.)
| | - Franziska Nowak
- Medical Department I, Gastroenterology, Infectious Diseases and Rheumatology, Charité—University Medicine, 12203 Berlin, Germany; (R.G.); (F.N.); (V.M.)
| | - Nicolle Kränkel
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
| | - Arash Haghikia
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
- Berlin Institute of Health, 10178 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
| | - Verena Moos
- Medical Department I, Gastroenterology, Infectious Diseases and Rheumatology, Charité—University Medicine, 12203 Berlin, Germany; (R.G.); (F.N.); (V.M.)
| | | | - Stephan B. Felix
- DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, 17475 Greifswald, Germany;
- Department of Internal Medicine B, Cardiology, University Medicine Greifswald, 17489 Greifswald, Germany
| | - Ulf Landmesser
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
- Berlin Institute of Health, 10178 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
| | - Bernhard H. Rauch
- Center of Drug Absorption and Transport, Institute of Pharmacology, University Medicine Greifswald, 17489 Greifswald, Germany; (E.M.); (B.H.R.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, 17475 Greifswald, Germany;
- Department of Human Medicine, Section of Pharmacology and Toxicology, Carl von Ossietzky Universität, 26129 Oldenburg, Germany
| | - Ursula Rauch
- Charité Center 11—Department of Cardiology, Charité—University Medicine, 12203 Berlin, Germany; (J.F.); (M.W.); (K.J.); (E.S.); (A.D.); (D.S.); (M.P.); (S.L.); (N.K.); (A.H.); (U.L.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
- Correspondence: ; Tel.: +49-30-450-513794
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23
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Motta JP, Deraison C, Le Grand S, Le Grand B, Vergnolle N. PAR-1 Antagonism to Promote Gut Mucosa Healing in Crohn's Disease Patients: A New Avenue for CVT120165. Inflamm Bowel Dis 2021; 27:S33-S37. [PMID: 34791291 DOI: 10.1093/ibd/izab244] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Indexed: 12/17/2022]
Abstract
A new paradigm has been added for the treatment of inflammatory bowel diseases such as Crohn's disease and ulcerative colitis. In addition to resolving symptoms and inflammatory cell activation, the objective of tissue repair and mucosal healing is also now considered a primary goal. In the search of mediators that would be responsible for delayed mucosal healing, protease-activated receptor-1 (PAR-1) has emerged as a most interesting target. Indeed, in Crohn's disease, the endogenous PAR-1 agonist thrombin is drastically activated. Activation of PAR-1 is known to be associated with epithelial dysfunctions that hamper mucosal homeostasis. This review gathers the scientific evidences of a potential role for PAR-1 in mucosal damage and mucosal dysfunctions associated with chronic intestinal inflammation. The potential clinical benefits of PAR-1 antagonism to promote mucosal repair in CD patients are discussed. Targeted local delivery of a PAR-1 antagonist molecule such as CVT120165, a formulated version of the FDA-approved PAR-1 antagonist vorapaxar, at the mucosa of Crohn's disease patients could be proposed as a new indication for IBD that could be rapidly tested in clinical trials.
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Affiliation(s)
- Jean-Paul Motta
- Institut de Recherche en Santé Digestive, Université de Toulouse, INSERM, INRA, ENVT, UPS, U1220, CHU Purpan, CS60039, Toulouse, France.,CVasThera, Arobase Castres-Mazamet, Castres, France
| | - Celine Deraison
- Institut de Recherche en Santé Digestive, Université de Toulouse, INSERM, INRA, ENVT, UPS, U1220, CHU Purpan, CS60039, Toulouse, France
| | | | | | - Nathalie Vergnolle
- Institut de Recherche en Santé Digestive, Université de Toulouse, INSERM, INRA, ENVT, UPS, U1220, CHU Purpan, CS60039, Toulouse, France.,Departments of Physiology & Pharmacology, and Medicine, University of Calgary Cumming School of Medicine, 3330 Hospital Drive NW, Calgary, Alberta, Canada
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24
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Tekin C, Scicluna BP, Lodestijn SC, Shi K, Bijlsma MF, Spek CA. Protease-activated receptor 1 drives and maintains ductal cell fates in the premalignant pancreas and ductal adenocarcinoma. Mol Oncol 2021; 15:3091-3108. [PMID: 33932087 PMCID: PMC8564660 DOI: 10.1002/1878-0261.12971] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 02/26/2021] [Accepted: 04/16/2021] [Indexed: 12/14/2022] Open
Abstract
Pancreatic acinar cells have high plasticity and can transdifferentiate into ductal-like cells. This acinar-to-ductal metaplasia (ADM) contributes to tissue maintenance but may also contribute to the premalignant transformation that can eventually progress to pancreatic ductal adenocarcinoma (PDAC). Macrophages are key players in ADM, and macrophage-secreted matrix metalloproteinase (MMP)-9 induces ADM through yet unknown mechanisms. As we previously identified MMP9 as a novel agonist of protease-activated receptor 1 (PAR1), a receptor that is known to orchestrate the cross-talk between macrophages and tumor cells in PDAC, we here assessed the contribution of PAR1 to pancreatic cell fates. We found that genetic deficiency for PAR1 increases acinar gene expression programs in the healthy pancreas and that PAR1 deficiency limits ductal transdifferentiation in experimental systems for ADM. Moreover, PAR1 silencing in PDAC cells increases acinar marker expression. Changes in PDAC cell lines were associated with a downregulation of known Myc-target genes, and Myc inhibition mimics PAR1 deficiency in enhancing acinar programs in healthy organoids and PDAC cells. Overall, we identify the PAR1-Myc axis as a driver of ductal cell fates in premalignant pancreas and PDAC. Moreover, we show that cellular plasticity is not unique to acinar cells and that ductal regeneration into acinar-like cells is possible even in the context of oncogenic KRAS activation.
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Affiliation(s)
- Cansu Tekin
- Center for Experimental and Molecular MedicineAmsterdam UMCUniversity of AmsterdamThe Netherlands
- Laboratory for Experimental Oncology and RadiobiologyCancer Center AmsterdamAmsterdam UMCUniversity of AmsterdamThe Netherlands
- Oncode InstituteAmsterdamThe Netherlands
| | - Brendon P. Scicluna
- Center for Experimental and Molecular MedicineAmsterdam UMCUniversity of AmsterdamThe Netherlands
| | - Sophie C. Lodestijn
- Laboratory for Experimental Oncology and RadiobiologyCancer Center AmsterdamAmsterdam UMCUniversity of AmsterdamThe Netherlands
- Oncode InstituteAmsterdamThe Netherlands
| | - Kun Shi
- Center for Experimental and Molecular MedicineAmsterdam UMCUniversity of AmsterdamThe Netherlands
| | - Maarten F. Bijlsma
- Laboratory for Experimental Oncology and RadiobiologyCancer Center AmsterdamAmsterdam UMCUniversity of AmsterdamThe Netherlands
- Oncode InstituteAmsterdamThe Netherlands
| | - C. Arnold Spek
- Center for Experimental and Molecular MedicineAmsterdam UMCUniversity of AmsterdamThe Netherlands
- Laboratory for Experimental Oncology and RadiobiologyCancer Center AmsterdamAmsterdam UMCUniversity of AmsterdamThe Netherlands
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25
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The development of proteinase-activated receptor-2 modulators and the challenges involved. Biochem Soc Trans 2021; 48:2525-2537. [PMID: 33242065 PMCID: PMC7752072 DOI: 10.1042/bst20200191] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/13/2020] [Accepted: 11/02/2020] [Indexed: 11/30/2022]
Abstract
Protease-activated receptor-2 (PAR2) has been extensively studied since its discovery in the mid-1990. Despite the advances in understanding PAR2 pharmacology, it has taken almost 25 years for the first inhibitor to reach clinical trials, and so far, no PAR2 antagonist has been approved for human use. Research has employed classical approaches to develop a wide array of PAR2 agonists and antagonists, consisting of peptides, peptoids and antibodies to name a few, with a surge in patent applications over this period. Recent breakthroughs in PAR2 structure determination has provided a unique insight into proposed PAR2 ligand binding sites. Publication of the first crystal structures of PAR2 resolved in complex with two novel non-peptide small molecule antagonists (AZ8838 and AZ3451) revealed two distinct binding pockets, originally presumed to be allosteric sites, with a PAR2 antibody (Fab3949) used to block tethered ligand engagement with the peptide-binding domain of the receptor. Further studies have proposed orthosteric site occupancy for AZ8838 as a competitive antagonist. One company has taken the first PAR2 antibody (MEDI0618) into phase I clinical trial (NCT04198558). While this first-in-human trial is at the early stages of the assessment of safety, other research into the structural characterisation of PAR2 is still ongoing in an attempt to identify new ways to target receptor activity. This review will focus on the development of novel PAR2 modulators developed to date, with an emphasis placed upon the advances made in the pharmacological targeting of PAR2 activity as a strategy to limit chronic inflammatory disease.
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26
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Pompili E, Fabrizi C. Thrombin in peripheral nerves: friend or foe? Neural Regen Res 2021; 16:1223-1224. [PMID: 33269786 PMCID: PMC8224103 DOI: 10.4103/1673-5374.300446] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/21/2020] [Accepted: 07/08/2020] [Indexed: 11/04/2022] Open
Affiliation(s)
- Elena Pompili
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University, Rome, Italy
| | - Cinzia Fabrizi
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University, Rome, Italy
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27
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Seo Y, Heo Y, Jo S, Park SH, Lee C, Chang J, Jeon DK, Kim TG, Han G, Namkung W. Novel positive allosteric modulator of protease-activated receptor 1 promotes skin wound healing in hairless mice. Br J Pharmacol 2021; 178:3414-3427. [PMID: 33837955 DOI: 10.1111/bph.15489] [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] [Received: 03/24/2020] [Revised: 02/04/2021] [Accepted: 03/29/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Protease-activated receptor 1 (PAR1) is a GPCR expressed in several skin cell types, including keratinocyte and dermal fibroblast. PAR1 activation plays a crucial role in the process of skin wound healing such as thrombosis, inflammation, proliferation and tissue repair. In the present study, we identified a novel positive allosteric modulator of PAR1, GB83, and investigated its effect on skin wound healing. EXPERIMENTAL APPROACH The enhancement of PAR1 activity by GB83 was measured using Fluo-4 calcium assay. In silico docking analysis of GB83 in PAR1 was performed using dock ligands method (CDOCKER) with CHARMm force field. Effects of GB83 on cell viability and gene expression were observed using MTS assay and quantitative real-time PCRs, respectively. SKH-1 hairless mice were used to investigate the wound healing effect of GB83. KEY RESULTS We demonstrated that GB83 did not activate PAR1 by itself but strongly enhanced PAR1 activation by thrombin and PAR1-activating peptide (AP). In silico docking analysis revealed that GB83 can bind to the PAR1 binding site of vorapaxar. GB83 significantly promoted PAR1-mediated cell viability and migration. In addition, the enhancement of PAR1 activity by GB83 strongly increased gene expression of TGF-β, fibronectin and type I collagen in vitro and promoted skin wound healing in vivo. CONCLUSION AND IMPLICATIONS Our results revealed that GB83 is the first positive allosteric modulator of PAR1 and it can be a useful pharmacological tool for studying PAR1 and a potential therapeutic agent for skin wound healing.
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Affiliation(s)
- Yohan Seo
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea.,Department of Integrated OMICS for Biomedical Science, WCU Program of Graduate School, Yonsei University, Seoul, Republic of Korea.,New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, Republic of Korea
| | - Yunkyung Heo
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
| | - Sungwoo Jo
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
| | - So-Hyeon Park
- Graduate Program of Industrial Pharmaceutical Science, Yonsei University, Incheon, Republic of Korea
| | - Chulho Lee
- Department of Integrated OMICS for Biomedical Science, WCU Program of Graduate School, Yonsei University, Seoul, Republic of Korea.,Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Jiwon Chang
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
| | - Dong-Kyu Jeon
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
| | - Tae Gun Kim
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Gyoonhee Han
- Department of Integrated OMICS for Biomedical Science, WCU Program of Graduate School, Yonsei University, Seoul, Republic of Korea.,Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Wan Namkung
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea.,Department of Integrated OMICS for Biomedical Science, WCU Program of Graduate School, Yonsei University, Seoul, Republic of Korea
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28
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Rovai ES, Alves T, Holzhausen M. Protease-activated receptor 1 as a potential therapeutic target for COVID-19. Exp Biol Med (Maywood) 2021; 246:688-694. [PMID: 33302737 PMCID: PMC7746952 DOI: 10.1177/1535370220978372] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Acute respiratory disease caused by a novel coronavirus (SARS-CoV-2) has spread all over the world, since its discovery in 2019, Wuhan, China. This disease is called COVID-19 and already killed over 1 million people worldwide. The clinical symptoms include fever, dry cough, dyspnea, headache, dizziness, generalized weakness, vomiting, and diarrhea. Unfortunately, so far, there is no validated vaccine, and its management consists mainly of supportive care. Venous thrombosis and pulmonary embolism are highly prevalent in patients suffering from severe COVID-19. In fact, a prothrombotic state seems to be present in most fatal cases of the disease. SARS-CoV-2 leads to the production of proinflammatory cytokines, causing immune-mediated tissue damage, disruption of the endothelial barrier, and uncontrolled thrombogenesis. Thrombin is the key regulator of coagulation and fibrin formation. In severe COVID-19, a dysfunctional of physiological anticoagulant mechanisms leads to a progressive increase of thrombin activity, which is associated with acute respiratory distress syndrome development and a poor prognosis. Protease-activated receptor type 1 (PAR1) is the main thrombin receptor and may represent an essential link between coagulation and inflammation in the pathophysiology of COVID-19. In this review, we discuss the potential role of PAR1 inhibition and regulation in COVID-19 treatment.
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Affiliation(s)
- Emanuel S. Rovai
- Department of Dentistry, University of Taubate, Taubate 12010-490, Brazil
| | - Tomaz Alves
- Division of Periodontics, Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo 05508-000, Brazil
| | - Marinella Holzhausen
- Division of Periodontics, Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo 05508-000, Brazil
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29
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Morató X, Garcia-Esparcia P, Argerich J, Llorens F, Zerr I, Paslawski W, Borràs E, Sabidó E, Petäjä-Repo UE, Fernández-Dueñas V, Ferrer I, Svenningsson P, Ciruela F. Ecto-GPR37: a potential biomarker for Parkinson's disease. Transl Neurodegener 2021; 10:8. [PMID: 33637132 PMCID: PMC7908677 DOI: 10.1186/s40035-021-00232-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 02/08/2021] [Indexed: 11/15/2022] Open
Abstract
Objective α-Synuclein has been studied as a potential biomarker for Parkinson’s disease (PD) with no concluding results. Accordingly, there is an urgent need to find out reliable specific biomarkers for PD. GPR37 is an orphan G protein-coupled receptor that toxically accumulates in autosomal recessive juvenile parkinsonism. Here, we investigated whether GPR37 is upregulated in sporadic PD, and thus a suitable potential biomarker for PD. Methods GPR37 protein density and mRNA expression in postmortem substantia nigra (SN) from PD patients were analysed by immunoblot and RT-qPCR, respectively. The presence of peptides from the N-terminus-cleaved domain of GPR37 (i.e. ecto-GPR37) in human cerebrospinal fluid (CSF) was determined by liquid chromatography-mass spectrometric analysis. An engineered in-house nanoluciferase-based immunoassay was used to quantify ecto-GPR37 in CSF samples from neurological control (NC) subjects, PD patients and Alzheimer’s disease (AD) patients. Results GPR37 protein density and mRNA expression were significantly augmented in sporadic PD. Increased amounts of ecto-GPR37 peptides in the CSF samples from PD patients were identified by mass spectrometry and quantified by the in-house ELISA method. However, the CSF total α-synuclein level in PD patients did not differ from that in NC subjects. Similarly, the cortical GPR37 mRNA expression and CSF ecto-GPR37 levels in AD patients were also unaltered. Conclusion GPR37 expression is increased in SN of sporadic PD patients. The ecto-GPR37 peptides are significantly increased in the CSF of PD patients, but not in AD patients. These results open perspectives and encourage further clinical studies to confirm the validity and utility of ecto-GPR37 as a potential PD biomarker. Supplementary Information The online version contains supplementary material available at 10.1186/s40035-021-00232-7.
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Affiliation(s)
- Xavier Morató
- Pharmacology Unit, Department of Pathology and Experimental Therapeutics, Faculty of Medicine and Health Sciences, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, Spain.,Neuroscience Program, Bellvitge Biomedical Research Institute, IDIBELL, L'Hospitalet de Llobregat, Spain.,Section of Neurology, Department of Clinical Neuroscience, Department of Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Paula Garcia-Esparcia
- Neuroscience Program, Bellvitge Biomedical Research Institute, IDIBELL, L'Hospitalet de Llobregat, Spain.,Neuropathology Unit, Department of Pathology and Experimental Therapeutics, Faculty of Medicine and Health Sciences, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, Spain.,CIBERNED, Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas, Instituto Carlos III, Madrid, Spain
| | - Josep Argerich
- Pharmacology Unit, Department of Pathology and Experimental Therapeutics, Faculty of Medicine and Health Sciences, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, Spain.,Neuroscience Program, Bellvitge Biomedical Research Institute, IDIBELL, L'Hospitalet de Llobregat, Spain
| | - Franc Llorens
- Neuroscience Program, Bellvitge Biomedical Research Institute, IDIBELL, L'Hospitalet de Llobregat, Spain.,Neuropathology Unit, Department of Pathology and Experimental Therapeutics, Faculty of Medicine and Health Sciences, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, Spain.,CIBERNED, Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas, Instituto Carlos III, Madrid, Spain.,Department of Neurology, Clinical Dementia Center and National Reference Center for CJD Surveillance, University Medical School, Göttingen, Germany
| | - Inga Zerr
- Department of Neurology, Clinical Dementia Center and National Reference Center for CJD Surveillance, University Medical School, Göttingen, Germany.,German Center for Neurodegenerative Diseases, Göttingen, Germany
| | - Wojciech Paslawski
- Section of Neurology, Department of Clinical Neuroscience, Department of Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Eva Borràs
- Proteomics Unit, Center for Genomic Regulation, Barcelona, Spain.,Proteomics Unit, Universitat Pompeu Fabra, Barcelona, Spain
| | - Eduard Sabidó
- Proteomics Unit, Center for Genomic Regulation, Barcelona, Spain.,Proteomics Unit, Universitat Pompeu Fabra, Barcelona, Spain
| | - Ulla E Petäjä-Repo
- Research Unit of Biomedicine, Medical Research Center Oulu, University of Oulu, Oulu, Finland
| | - Víctor Fernández-Dueñas
- Pharmacology Unit, Department of Pathology and Experimental Therapeutics, Faculty of Medicine and Health Sciences, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, Spain.,Neuroscience Program, Bellvitge Biomedical Research Institute, IDIBELL, L'Hospitalet de Llobregat, Spain
| | - Isidro Ferrer
- Neuroscience Program, Bellvitge Biomedical Research Institute, IDIBELL, L'Hospitalet de Llobregat, Spain.,Neuropathology Unit, Department of Pathology and Experimental Therapeutics, Faculty of Medicine and Health Sciences, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, Spain.,CIBERNED, Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas, Instituto Carlos III, Madrid, Spain
| | - Per Svenningsson
- Section of Neurology, Department of Clinical Neuroscience, Department of Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Francisco Ciruela
- Pharmacology Unit, Department of Pathology and Experimental Therapeutics, Faculty of Medicine and Health Sciences, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, Spain. .,Neuroscience Program, Bellvitge Biomedical Research Institute, IDIBELL, L'Hospitalet de Llobregat, Spain.
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30
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Cholesterol-Rich Microdomains Contribute to PAR1 Signaling in Platelets Despite a Weak Localization of the Receptor in These Microdomains. Int J Mol Sci 2020; 21:ijms21218065. [PMID: 33138025 PMCID: PMC7663584 DOI: 10.3390/ijms21218065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/22/2020] [Accepted: 10/27/2020] [Indexed: 01/03/2023] Open
Abstract
Platelet protease-activated receptor 1 (PAR1) is a cell surface G-protein-coupled receptor (GPCR) that acts as a thrombin receptor promoting platelet aggregation. Targeting the PAR1 pathway by vorapaxar, a PAR1 antagonist, leads to a reduction in ischemic events in cardiovascular patients with a history of myocardial infarction or with peripheral arterial disease. In platelets, specialized microdomains highly enriched in cholesterol act as modulators of the activity of several GPCRs and play a pivotal role in the signaling pathway. However, their involvement in platelet PAR1 function remains incompletely characterized. In this context, we aimed to investigate whether activation of PAR1 in human platelets requires its localization in the membrane cholesterol-rich microdomains. Using confocal microscopy, biochemical isolation, and proteomics approaches, we found that PAR1 was not localized in cholesterol-rich microdomains in resting platelets, and only a small fraction of the receptor relocated to the microdomains following its activation. Vorapaxar treatment increased the level of PAR1 at the platelet surface, possibly by reducing its endocytosis, while its colocalization with cholesterol-rich microdomains remained weak. Consistent with a cholesterol-dependent activation of Akt and p38 MAP kinase in thrombin receptor-activating peptide (TRAP)-activated platelets, the proteomic data of cholesterol-rich microdomains isolated from TRAP-activated platelets showed the recruitment of proteins contributing to these signaling pathways. In conclusion, contrary to endothelial cells, we found that PAR1 was only weakly present in cholesterol-rich microdomains in human platelets but used these microdomains for efficient activation of downstream signaling pathways following TRAP activation.
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31
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Burster T, Knippschild U, Molnár F, Zhanapiya A. Cathepsin G and its Dichotomous Role in Modulating Levels of MHC Class I Molecules. Arch Immunol Ther Exp (Warsz) 2020; 68:25. [PMID: 32815043 DOI: 10.1007/s00005-020-00585-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 06/11/2020] [Indexed: 12/21/2022]
Abstract
Cathepsin G (CatG) is involved in controlling numerous processes of the innate and adaptive immune system. These features include the proteolytic activity of CatG and play a pivotal role in alteration of chemokines as well as cytokines, clearance of exogenous and internalized pathogens, platelet activation, apoptosis, and antigen processing. This is in contrast to the capability of CatG acting in a proteolytic-independent manner due to the net charge of arginine residues in the CatG sequence which interferes with bacteria. CatG is a double-edged sword; CatG is also responsible in pathophysiological conditions, such as autoimmunity, chronic pulmonary diseases, HIV infection, tumor progression and metastasis, photo-aged human skin, Papillon-Lefèvre syndrome, and chronic inflammatory pain. Here, we summarize the latest findings for functional responsibilities of CatG in immunity, including bivalent regulation of major histocompatibility complex class I molecules, which underscore an additional novel role of CatG within the immune system.
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Affiliation(s)
- Timo Burster
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Kabanbay Batyr Ave. 53, Nur-Sultan, 010000, Kazakhstan.
| | - Uwe Knippschild
- Department of General and Visceral Surgery, Surgery Center, Ulm University Hospital, 89081, Ulm, Germany
| | - Ferdinand Molnár
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Kabanbay Batyr Ave. 53, Nur-Sultan, 010000, Kazakhstan
| | - Anuar Zhanapiya
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Kabanbay Batyr Ave. 53, Nur-Sultan, 010000, Kazakhstan
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Shin SJ, Hang HT, Thang BQ, Shimoda T, Sakamoto H, Osaka M, Hiramatsu Y, Yamashiro Y, Yanagisawa H. Role of PAR1-Egr1 in the Initiation of Thoracic Aortic Aneurysm in Fbln4-Deficient Mice. Arterioscler Thromb Vasc Biol 2020; 40:1905-1917. [DOI: 10.1161/atvbaha.120.314560] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Objective:
Remodeling of the extracellular matrix plays a vital role in cardiovascular diseases. Using a mouse model of postnatal ascending aortic aneurysms (termed
Fbln4
SMKO
), we have reported that abnormal mechanosensing led to aneurysm formation in
Fbln4
SMKO
with an upregulation of the mechanosensitive transcription factor, Egr1 (Early growth response 1). However, the role of Egr1 and its upstream regulator(s) in the initiation of aneurysm development and their relationship to an aneurysmal microenvironment are unknown.
Approach and Results:
To investigate the contribution of Egr1 in the aneurysm development, we deleted
Egr1
in
Fbln4
SMKO
mice and generated double knockout mice (
DKO
,
Fbln4
SMKO
;
Egr1
−/−
). Aneurysms were prevented in
DKO
mice (42.8%) and
Fbln4
SMKO
;
Egr1
+/−
mice (26%). Ingenuity Pathway Analysis identified PAR1 (protease-activated receptor 1) as a potential Egr1 upstream gene. Protein and transcript levels of PAR1 were highly increased in
Fbln4
SMKO
aortas at postnatal day 1 before aneurysm formed, together with active thrombin and MMP (matrix metalloproteinase)-9, both of which serve as a PAR1 activator. Concordantly, protein levels of PAR1, Egr1, and thrombin were significantly increased in human thoracic aortic aneurysms. In vitro cyclic stretch assays (1.0 Hz, 20% strain, 8 hours) using mouse primary vascular smooth muscle cells induced marked expression of PAR1 and secretion of prothrombin in response to mechanical stretch. Thrombin was sufficient to induce Egr1 expression in a PAR1-dependent manner.
Conclusions:
We propose that thrombin, MMP-9, and mechanical stimuli in the
Fbln4
SMKO
aorta activate PAR1, leading to the upregulation of Egr1 and initiation of ascending aortic aneurysms.
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Affiliation(s)
- Seung Jae Shin
- From the Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA) (S.J.S., H.T.H., T.S., Y.Y., H.Y.), University of Tsukuba, Ibaraki, Japan
- Graduate School of Life and Environmental Sciences (S.J.S.), University of Tsukuba, Ibaraki, Japan
| | - Huynh Thuy Hang
- From the Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA) (S.J.S., H.T.H., T.S., Y.Y., H.Y.), University of Tsukuba, Ibaraki, Japan
- Graduate School of Comprehensive Human Sciences (H.T.H.), University of Tsukuba, Ibaraki, Japan
| | - Bui Quoc Thang
- Department of Cardiovascular Surgery (B.Q.T., H.S., M.O., Y.H.), University of Tsukuba, Ibaraki, Japan
| | - Tomonari Shimoda
- From the Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA) (S.J.S., H.T.H., T.S., Y.Y., H.Y.), University of Tsukuba, Ibaraki, Japan
- School of Medicine (T.S.), University of Tsukuba, Ibaraki, Japan
| | - Hiroaki Sakamoto
- Department of Cardiovascular Surgery (B.Q.T., H.S., M.O., Y.H.), University of Tsukuba, Ibaraki, Japan
| | - Motoo Osaka
- Department of Cardiovascular Surgery (B.Q.T., H.S., M.O., Y.H.), University of Tsukuba, Ibaraki, Japan
| | - Yuji Hiramatsu
- Department of Cardiovascular Surgery (B.Q.T., H.S., M.O., Y.H.), University of Tsukuba, Ibaraki, Japan
| | - Yoshito Yamashiro
- From the Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA) (S.J.S., H.T.H., T.S., Y.Y., H.Y.), University of Tsukuba, Ibaraki, Japan
| | - Hiromi Yanagisawa
- From the Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA) (S.J.S., H.T.H., T.S., Y.Y., H.Y.), University of Tsukuba, Ibaraki, Japan
- Division of Biomedical Science, Faculty of Medicine (H.Y.), University of Tsukuba, Ibaraki, Japan
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Andreae EA, Warejcka DJ, Twining SS. Thrombin alters the synthesis and processing of CYR61/CCN1 in human corneal stromal fibroblasts and myofibroblasts through multiple distinct mechanisms. Mol Vis 2020; 26:540-562. [PMID: 32818017 PMCID: PMC7406864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 07/27/2020] [Indexed: 11/08/2022] Open
Abstract
Purpose Previous research in our laboratory indicated that prothrombin and other coagulation enzymes required to activate prothrombin to thrombin are synthesized by the cornea and that apoptotic human corneal stromal cells can provide a surface for prothrombin activation through the intrinsic and extrinsic coagulation pathways. The purpose of the work reported here is to study the role of thrombin activity in the regulation of matricellular protein Cyr61 (CCN1) produced by wounded phenotype human corneal stromal fibroblasts and myofibroblasts. Methods Stromal cells from human donor corneas were converted to defined wounded phenotype fibroblasts and myofibroblasts with fetal bovine serum, followed by basic fibroblast growth factor (bFGF) and transforming growth factor beta-1 (TGFβ-1), respectively, and stimulated with varying concentrations (0-10.0 units (U)/ml) of thrombin from 1-7 h. Cyr61 transcript levels were determined using reverse transcriptase-PCR (RT-PCR) and quantitative PCR (qPCR) while protein forms were analyzed using western blot data. Protease activities were characterized via protease class-specific inhibitors and western blot analysis. Thrombin activity was quantified using the fluorogenic peptide Phe-Pro-Arg-AFC. Protease-activated receptor (PAR) agonist peptides-1 and -4 were used to determine whether cells increased Cyr61 through PAR signaling pathways. The PAR-1 antagonist SCH 79797 was used to block the thrombin cleavage of the receptor. PCR data were analyzed using MxPro software and western blot data were analyzed using Image Lab™ and Image J software. Student t test and one- and two-way ANOVA (with or without ranking, depending on sample distribution), together with Dunnett's test or Tukey comparison tests for post-hoc analysis, were used to determine statistical significance. Results: Full-length Cyr61 is expressed by human corneal stromal fibroblasts and myofibroblasts and is significantly upregulated by active thrombin stimulation at the message (p<0.03) and protein (p<0.03) levels for fibroblasts and myofibroblasts. Inhibition by the allosteric thrombin-specific inhibitor hirudin prevented the thrombin-associated increase in the Cyr61 protein expression, indicating that the proteolytic activity of thrombin is required for the increase of the Cyr61 protein level. PAR-1 agonist stimulation of fibroblasts and myofibroblasts significantly increased cell-associated Cyr61 protein levels (p<0.04), and PAR-1 antagonist SCH 79797 significantly inhibited the thrombin stimulated increase of Cyr61 in fibroblasts but not in myofibroblasts. In the fibroblast and myofibroblast conditioned media, Cyr61 was detected as the full-length 40 kDa protein in the absence of thrombin, and mainly at 24 kDa in the presence of thrombin at ≥0.5 U/ml, using an antibody directed toward the internal linker region between the von Willebrand factor type C and thrombospondin type-1 domains. Although known to undergo alternative splicing, Cyr61 that is synthesized by corneal fibroblasts and myofibroblasts is not alternatively spliced in response to thrombin stimulation nor is Cyr61 directly cleaved by thrombin to generate its 24 kDa form; instead, Cyr61 is proteolytically processed into 24 kDa N- and 16 kDa C-terminal fragments by a thrombin activated leupeptin-sensitive protease present in conditioned media with activity distinct from the proteolytic activity of thrombin. Conclusions In cultured human corneal stromal fibroblasts and myofibroblasts, thrombin regulates Cyr61 through two mechanisms: 1) thrombin increases the Cyr61 expression at the message and protein levels, and 2) thrombin increases the activation of a leupeptin-sensitive protease that stimulates the cleavage of Cyr61 into N- and C-terminal domain populations in or near the thrombospondin type-1 domain. Generation of Cyr61 peptides during corneal injury stimulation may reveal additional functions of the protein, which modulate corneal wound healing activities or decrease activities of the full-length Cyr61 form.
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Affiliation(s)
- Emily A Andreae
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI
- Marshfield Clinic Research Institute, Marshfield, WI
| | - Debra J Warejcka
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI
| | - Sally S Twining
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI
- Department of Ophthalmology, Medical College of Wisconsin, Milwaukee, WI
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Rehman A, Baloch NUA, Morrow JP, Pacher P, Haskó G. Targeting of G-protein coupled receptors in sepsis. Pharmacol Ther 2020; 211:107529. [PMID: 32197794 PMCID: PMC7388546 DOI: 10.1016/j.pharmthera.2020.107529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/11/2020] [Accepted: 03/11/2020] [Indexed: 12/11/2022]
Abstract
The Third International Consensus Definitions (Sepsis-3) define sepsis as life-threatening multi-organ dysfunction caused by a dysregulated host response to infection. Sepsis can progress to septic shock-an even more lethal condition associated with profound circulatory, cellular and metabolic abnormalities. Septic shock remains a leading cause of death in intensive care units and carries a mortality of almost 25%. Despite significant advances in our understanding of the pathobiology of sepsis, therapeutic interventions have not translated into tangible differences in the overall outcome for patients. Clinical trials of antagonists of various pro-inflammatory mediators in sepsis have been largely unsuccessful in the past. Given the diverse physiologic roles played by G-protein coupled receptors (GPCR), modulation of GPCR signaling for the treatment of sepsis has also been explored. Traditional pharmacologic approaches have mainly focused on ligands targeting the extracellular domains of GPCR. However, novel techniques aimed at modulating GPCR intracellularly through aptamers, pepducins and intrabodies have opened a fresh avenue of therapeutic possibilities. In this review, we summarize the diverse roles played by various subfamilies of GPCR in the pathogenesis of sepsis and identify potential targets for pharmacotherapy through these novel approaches.
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Affiliation(s)
- Abdul Rehman
- Department of Medicine, Rutgers-New Jersey Medical School, Newark, NJ, United States
| | - Noor Ul-Ain Baloch
- Department of Medicine, Rutgers-New Jersey Medical School, Newark, NJ, United States
| | - John P Morrow
- Department of Medicine, Columbia University, New York City, NY, United States
| | - Pál Pacher
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institutes of Health, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, United States
| | - György Haskó
- Department of Anesthesiology, Columbia University, New York City, NY, United States.
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35
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Garzón-Tituaña M, Arias MA, Sierra-Monzón JL, Morte-Romea E, Santiago L, Ramirez-Labrada A, Martinez-Lostao L, Paño-Pardo JR, Galvez EM, Pardo J. The Multifaceted Function of Granzymes in Sepsis: Some Facts and a Lot to Discover. Front Immunol 2020; 11:1054. [PMID: 32655547 PMCID: PMC7325996 DOI: 10.3389/fimmu.2020.01054] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 04/30/2020] [Indexed: 12/21/2022] Open
Abstract
Sepsis is a serious global health problem. In addition to a high incidence, this syndrome has a high mortality and is responsible for huge health expenditure. The pathophysiology of sepsis is very complex and it is not well-understood yet. However, it is widely accepted that the initial phase of sepsis is characterized by a hyperinflammatory response while the late phase is characterized by immunosuppression and immune anergy, increasing the risk of secondary infections. Granzymes (Gzms) are a family of serine proteases classified according to their cleavage specificity. Traditionally, it was assumed that all Gzms acted as cytotoxic proteases. However, recent evidence suggests that GzmB is the one with the greatest cytotoxic capacity, while the cytotoxicity of others such as GzmA and GzmK is not clear. Recent studies have found that GzmA, GzmB, GzmK, and GzmM act as pro-inflammatory mediators. Specially, solid evidences show that GzmA and GzmK function as extracellular proteases that regulate the inflammatory response irrespectively of its ability to induce cell death. Indeed, studies in animal models indicate that GzmA is involved in the cytokine release syndrome characteristic of sepsis. Moreover, the GZM family also could regulate other biological processes involved in sepsis pathophysiology like the coagulation cascade, platelet function, endothelial barrier permeability, and, in addition, could be involved in the immunosuppressive stage of sepsis. In this review, we provide a comprehensive overview on the contribution of these novel functions of Gzms to sepsis and the new therapeutic opportunities emerging from targeting these proteases for the treatment of this serious health problem.
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Affiliation(s)
- Marcela Garzón-Tituaña
- Fundación Instituto de Investigación Sanitaria Aragón (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain
| | | | - José L Sierra-Monzón
- Fundación Instituto de Investigación Sanitaria Aragón (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain.,Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - Elena Morte-Romea
- Fundación Instituto de Investigación Sanitaria Aragón (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain.,Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - Llipsy Santiago
- Fundación Instituto de Investigación Sanitaria Aragón (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain
| | - Ariel Ramirez-Labrada
- Nanotoxicology and Immunotoxicology Unit (UNATI), Fundación Instituto de Investigación Sanitaria Aragón (IIS Aragón), Zaragoza, Spain
| | - Luis Martinez-Lostao
- Fundación Instituto de Investigación Sanitaria Aragón (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain.,Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain.,Nanoscience Institute of Aragon (INA), University of Zaragoza, Zaragoza, Spain
| | - José R Paño-Pardo
- Fundación Instituto de Investigación Sanitaria Aragón (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain.,Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - Eva M Galvez
- Instituto de Carboquímica ICB-CSIC, Zaragoza, Spain
| | - Julián Pardo
- Fundación Instituto de Investigación Sanitaria Aragón (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain.,Nanoscience Institute of Aragon (INA), University of Zaragoza, Zaragoza, Spain.,Aragon I + D Foundation (ARAID), Zaragoza, Spain.,Department of Biochemistry and Molecular and Cell Biology and Department of Microbiology, Preventive Medicine and Public Health, University of Zaragoza, Zaragoza, Spain.,Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
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36
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Zhou P, Yin JX, Tao HL, Zhang HW. Pathogenesis and management of heparin-induced thrombocytopenia and thrombosis. Clin Chim Acta 2020; 504:73-80. [DOI: 10.1016/j.cca.2020.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 01/30/2020] [Accepted: 02/03/2020] [Indexed: 01/19/2023]
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37
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Fan M, Han M, Xia Y, Zhang Y, Chu Y, Bai G, Li W, Li J, Zhao L, He Y, Ma X, Duan Z. Design and synthesis of potent PAR-1 antagonists based on vorapaxar. Bioorg Med Chem Lett 2020; 30:127046. [PMID: 32122739 DOI: 10.1016/j.bmcl.2020.127046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/11/2020] [Accepted: 02/15/2020] [Indexed: 01/23/2023]
Abstract
A series of novel vorapaxar analogues with different amino substitutes at the C-7, C-9a and aromatic substitutes at the C-4 position were designed, synthesized, and evaluated for their inhibitory activity to PAR-1. Several compounds showed good potency in antagonist activity based on the intracellular calcium mobilization assay and excellent pharmacokinetics profile in rats. Among these analogues, 3d exhibited excellent PAR-1 inhibitory activity (IC50 = 0.18 μM) and the lower ability to cross the blood-brain barrier compared with vorapaxar (IC50 = 0.25 μM). Compound 3d has the potential to be developed as a new generation of PAR-1 antagonists with a better therapeutic window.
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Affiliation(s)
- Mengna Fan
- Hebei University of Technology, Tianjin 300100, China; Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Min Han
- Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Yan Xia
- Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Yingbin Zhang
- Hebei University of Technology, Tianjin 300100, China; Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Yang Chu
- Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Guirong Bai
- Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Wei Li
- Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Ju Li
- Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Lihui Zhao
- Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Yi He
- Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Xiaohui Ma
- Tianjin Tasly Academy, Tasly Holding Group Co., Ltd., Tianjin 300410, China; State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tasly Holding Group Co., Ltd., Tianjin 300410, China
| | - Zhongyu Duan
- Hebei University of Technology, Tianjin 300100, China.
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38
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Zhang Y, Wang H, Zhu G, Qian A, Chen W. F2r negatively regulates osteoclastogenesis through inhibiting the Akt and NFκB signaling pathways. Int J Biol Sci 2020; 16:1629-1639. [PMID: 32226307 PMCID: PMC7097923 DOI: 10.7150/ijbs.41867] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 01/05/2020] [Indexed: 12/13/2022] Open
Abstract
G-protein-coupled receptors (GPCRs) are pivotal drug targets for many diseases. Coagulation Factor II Thrombin Receptor (F2R) is an important member of GPCR family that is highly expressed in osteoclasts. However, the role of F2r in osteoclasts is still unclear. Here, to examine the functions of F2r on osteoclast formation, differentiation, activation, survival, and acidification, we employed loss-of-function and gain-of-function approaches to study F2r using F2r-targeted short hairpin RNA (sh-F2r) lentivirus and overexpression plasmid pLX304-F2r lentivirus respectively, in mouse bone marrow cells (MBMs) induced osteoclasts. We used three shRNAs targeting F2r which had the ability to efficiently and consistently knock down the expression of F2r at different levels. Notably, F2r knockdown trigged a significant increase in osteoclast activity, number, and size, as well as promoted bone resorption and F-actin ring formation with increased osteoclast marker gene expression. Moreover, F2r overexpression blocked osteoclast formation, maturation, and acidification, indicating that F2r negatively regulates osteoclast formation and function. Furthermore, we investigated the mechanism(s) underlying the role of F2r in osteoclasts. We detected RANKL-induced signaling pathways related protein changes F2r knockdown cells and found significantly increased pAkt levels in sh-F2r infected cells, as well as significantly enhanced phosphorylation of p65 and IKBα in early stages of RANKL stimulation. These data demonstrated that F2r responds to RANKL stimulation to attenuate osteoclastogenesis through inhibiting the both F2r-Akt and F2r-NFκB signaling pathways, which lead a reduction in the expression of osteoclast genes. Our study suggests that targeting F2r may be a novel therapeutic approach for bone diseases, such as osteoporosis.
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Affiliation(s)
- Yan Zhang
- Laboratory for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
- Department of Pathology, The School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - He Wang
- Department of Pathology, The School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Guochun Zhu
- Department of Pathology, The School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Airong Qian
- Laboratory for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Wei Chen
- Department of Pathology, The School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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Neurons, Glia, Extracellular Matrix and Neurovascular Unit: A Systems Biology Approach to the Complexity of Synaptic Plasticity in Health and Disease. Int J Mol Sci 2020; 21:ijms21041539. [PMID: 32102370 PMCID: PMC7073232 DOI: 10.3390/ijms21041539] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/19/2020] [Accepted: 02/20/2020] [Indexed: 02/06/2023] Open
Abstract
The synaptic cleft has been vastly investigated in the last decades, leading to a novel and fascinating model of the functional and structural modifications linked to synaptic transmission and brain processing. The classic neurocentric model encompassing the neuronal pre- and post-synaptic terminals partly explains the fine-tuned plastic modifications under both pathological and physiological circumstances. Recent experimental evidence has incontrovertibly added oligodendrocytes, astrocytes, and microglia as pivotal elements for synapse formation and remodeling (tripartite synapse) in both the developing and adult brain. Moreover, synaptic plasticity and its pathological counterpart (maladaptive plasticity) have shown a deep connection with other molecular elements of the extracellular matrix (ECM), once considered as a mere extracellular structural scaffold altogether with the cellular glue (i.e., glia). The ECM adds another level of complexity to the modern model of the synapse, particularly, for the long-term plasticity and circuit maintenance. This model, called tetrapartite synapse, can be further implemented by including the neurovascular unit (NVU) and the immune system. Although they were considered so far as tightly separated from the central nervous system (CNS) plasticity, at least in physiological conditions, recent evidence endorsed these elements as structural and paramount actors in synaptic plasticity. This scenario is, as far as speculations and evidence have shown, a consistent model for both adaptive and maladaptive plasticity. However, a comprehensive understanding of brain processes and circuitry complexity is still lacking. Here we propose that a better interpretation of the CNS complexity can be granted by a systems biology approach through the construction of predictive molecular models that enable to enlighten the regulatory logic of the complex molecular networks underlying brain function in health and disease, thus opening the way to more effective treatments.
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40
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Byskov K, Etscheid M, Kanse SM. Cellular effects of factor VII activating protease (FSAP). Thromb Res 2020; 188:74-78. [PMID: 32087413 DOI: 10.1016/j.thromres.2020.02.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 02/12/2020] [Indexed: 12/15/2022]
Abstract
Factor VII activating protease (FSAP) is a circulating serine protease of broad specificity that is likely to be involved in many pathophysiological processes. The activation of the circulating zymogen form of FSAP by histones, released from damaged cells, underlines its roles in regulating host responses to tissue damage and inflammation. Some of the direct cellular effects of FSAP are mediated through protease-activated receptors (PARs). Knock-down of each one of the four PARs in endothelial cells indicated that PAR-1 and -3 are involved in regulating endothelial permeability in response to FSAP. Overexpression of PARs in cell lines led to the conclusion that PAR-2 and -1 were the main receptors for FSAP. Studies with synthetic peptides and receptor mutants demonstrate that FSAP cleaves PAR-1 and -2 at their canonical cleavage site. However, PAR-1 is not activated by FSAP in all cells, which may be related to other, as yet, undefined factors. Inhibition of apoptosis by FSAP is mediated through PAR-1 and was observed in neurons, astrocytes and A549 cells. FSAP also mediates cellular effects by modulating the activity of growth factors, generation of bradykinin, C5a and C3a generation or histone inactivation. These cellular effects need to be further investigated at the in vivo level.
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Affiliation(s)
- Kristina Byskov
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | | | - Sandip M Kanse
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
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41
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Abstract
PURPOSE OF REVIEW The serine protease activated protein C (aPC) was initially characterized as an endogenous anticoagulant, but in addition conveys anti-inflammatory, barrier-protective, and pro cell-survival functions. Its endogenous anticoagulant function hampered the successful and continuous implantation of aPC as a therapeutic agent in septic patients. However, it became increasingly apparent that aPC controls cellular function largely independent of its anticoagulant effects through cell-specific and context-specific receptor complexes and intracellular signaling pathways. The purpose of this review is to outline the mechanisms of aPC-dependent cell signaling and its intracellular molecular targets. RECENT FINDINGS With the advent of new therapeutic agents either modulating directly and specifically the activity of coagulation proteases or interfering with protease-activated receptor signaling a better understanding not only of the receptor mechanisms but also of the intracellular signaling mechanisms controlled by aPC in a disease-specific and context-specific fashion, is required to tailor new therapeutic approaches based on aPC's anti-inflammatory, barrier-protective, and pro cell-survival functions. SUMMARY This review summarizes recent insights into the intracellular signaling pathways controlled by aPC in a cell-specific and context-specific fashion. We focus on aPC-mediated barrier protection, inhibition of inflammation, and cytoprotecting within this review.
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Tscharre M, Michelson AD, Gremmel T. Novel Antiplatelet Agents in Cardiovascular Disease. J Cardiovasc Pharmacol Ther 2020; 25:191-200. [DOI: 10.1177/1074248419899314] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Antiplatelet therapy reduces atherothrombotic risk and has therefore become a cornerstone in the treatment of cardiovascular disease. Aspirin, adenosine diphosphate P2Y12 receptor antagonists, glycoprotein IIb/IIIa inhibitors, and the thrombin receptor blocker vorapaxar are effective antiplatelet agents but significantly increase the risk of bleeding. Moreover, atherothrombotic events still impair the prognosis of many patients with cardiovascular disease despite established antiplatelet therapy. Over the last years, advances in the understanding of thrombus formation and hemostasis led to the discovery of various new receptors and signaling pathways of platelet activation. As a consequence, many new antiplatelet agents with high antithrombotic efficacy and supposedly only moderate effects on regular hemostasis have been developed and yielded promising results in preclinical and early clinical studies. Although their long journey from animal studies to randomized clinical trials and finally administration in daily clinical routine has just begun, some of the new agents may in the future become meaningful additions to the pharmacological armamentarium in cardiovascular disease.
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Affiliation(s)
- Maximilian Tscharre
- Department of Internal Medicine, Cardiology and Nephrology, Landesklinikum Wiener Neustadt, Wiener Neustadt, Austria
- Institute of Vascular Medicine and Cardiac Electrophysiology, Karl Landsteiner Society, St Poelten, Austria
| | - Alan D. Michelson
- Center for Platelet Research Studies, Dana-Farber/Boston Children’s Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA, USA
| | - Thomas Gremmel
- Department of Internal Medicine, Cardiology and Nephrology, Landesklinikum Wiener Neustadt, Wiener Neustadt, Austria
- Institute of Vascular Medicine and Cardiac Electrophysiology, Karl Landsteiner Society, St Poelten, Austria
- Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
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Lin YC, Ko YC, Hung SC, Lin YT, Lee JH, Tsai JY, Kung PH, Tsai MC, Chen YF, Wu CC. Selective Inhibition of PAR4 (Protease-Activated Receptor 4)-Mediated Platelet Activation by a Synthetic Nonanticoagulant Heparin Analog. Arterioscler Thromb Vasc Biol 2020; 39:694-703. [PMID: 30727756 DOI: 10.1161/atvbaha.118.311758] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective- PAR4 (protease-activated receptor 4), one of the thrombin receptors in human platelets, has emerged as a promising target for the treatment of arterial thrombotic disease. Previous studies implied that thrombin exosite II, known as a binding site for heparin, may be involved in thrombin-induced PAR4 activation. In the present study, a heparin octasaccharide analog containing the thrombin exosite II-binding domain of heparin was chemically synthesized and investigated for anti-PAR4 effect. Approach and Results- PAR4-mediated platelet aggregation was examined using either thrombin in the presence of a PAR1 antagonist or γ-thrombin, which selectively activates PAR4. SCH-28 specifically inhibits PAR4-mediated platelet aggregation, as well as the signaling events downstream of PAR4 in response to thrombin. Moreover, SCH-28 prevents thrombin-induced β-arrestin recruitment to PAR4 but not PAR1 in Chinese Hamster Ovary-K1 cells using a commercial enzymatic complementation assay. Compared with heparin, SCH-28 is more potent in inhibiting PAR4-mediated platelet aggregation but has no significant anticoagulant activity. In an in vitro thrombosis model, SCH-28 reduces thrombus formation under whole blood arterial flow conditions. Conclusions- SCH-28, a synthetic small-molecular and nonanticoagulant heparin analog, inhibits thrombin-induced PAR4 activation by interfering with thrombin exosite II, a mechanism of action distinct from other PAR4 inhibitors that target the receptor. The characteristics of SCH-28 provide a new strategy for targeting PAR4 with the potential for the treatment of arterial thrombosis.
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Affiliation(s)
- Yu-Chuan Lin
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan
| | - Yen-Chun Ko
- Genomics Research Center, Academia Sinica, Taipei, Taiwan (Y.-C.K., S.-C.H.)
| | - Shang-Cheng Hung
- Genomics Research Center, Academia Sinica, Taipei, Taiwan (Y.-C.K., S.-C.H.)
| | - Ying-Ting Lin
- Department of Biotechnology, College of Life Science (Y.-T.L., J.-H.L.), Kaohsiung Medical University, Taiwan
| | - Jia-Hau Lee
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan.,Department of Biotechnology, College of Life Science (Y.-T.L., J.-H.L.), Kaohsiung Medical University, Taiwan
| | - Ju-Ying Tsai
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan
| | - Po-Hsiung Kung
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan
| | - Meng-Chun Tsai
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan
| | - Yih-Fung Chen
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan
| | - Chin-Chung Wu
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Taiwan (C.-C.W.).,Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan (C.-C.W.)
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Rout A, Sukhi A, Chaudhary R, Bliden KP, Tantry US, Gurbel PA. Investigational drugs in phase II clinical trials for acute coronary syndromes. Expert Opin Investig Drugs 2020; 29:33-47. [DOI: 10.1080/13543784.2020.1708324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Amit Rout
- Sinai Center for Thrombosis Research, Sinai Hospital of Baltimore, LifeBridgehealth, Baltimore, MD, USA
| | - Ajaypaul Sukhi
- Sinai Center for Thrombosis Research, Sinai Hospital of Baltimore, LifeBridgehealth, Baltimore, MD, USA
| | - Rahul Chaudhary
- Division of Hospital Internal Medicine, Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA
| | - Kevin P Bliden
- Sinai Center for Thrombosis Research, Sinai Hospital of Baltimore, LifeBridgehealth, Baltimore, MD, USA
| | - Udaya S Tantry
- Sinai Center for Thrombosis Research, Sinai Hospital of Baltimore, LifeBridgehealth, Baltimore, MD, USA
| | - Paul A Gurbel
- Sinai Center for Thrombosis Research, Sinai Hospital of Baltimore, LifeBridgehealth, Baltimore, MD, USA
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45
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Willis Fox O, Preston RJS. Molecular basis of protease-activated receptor 1 signaling diversity. J Thromb Haemost 2020; 18:6-16. [PMID: 31549766 DOI: 10.1111/jth.14643] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/13/2019] [Accepted: 09/17/2019] [Indexed: 12/13/2022]
Abstract
Protease-activated receptors (PARs) are a family of highly conserved G protein-coupled receptors (GPCRs) that respond to extracellular proteases via a unique proteolysis-dependent activation mechanism. Protease-activated receptor 1 (PAR1) was the first identified member of the receptor family and plays important roles in hemostasis, inflammation and malignancy. The biology underlying PAR1 signaling by its canonical agonist thrombin is well characterized; however, definition of the mechanistic basis of PAR1 signaling by other proteases, including matrix metalloproteases, activated protein C, plasmin, and activated factors VII and X, remains incompletely understood. In this review, we discuss emerging insights into the molecular bases for "biased" PAR1 signaling, including atypical PAR1 proteolysis, PAR1 heterodimer and coreceptor interactions, PAR1 translocation on the membrane surface, and interactions with different G-proteins and β-arrestins upon receptor activation. Moreover, we consider how these new insights into PAR1 signaling have acted to spur development of novel PAR1-targeted therapeutics that act to inhibit, redirect, or fine-tune PAR1 signaling output to treat cardiovascular and inflammatory disease. Finally, we discuss some of the key unanswered questions relating to PAR1 biology, in particular how differences in PAR1 proteolysis, signaling intermediate coupling, and engagement with coreceptors and GPCRs combine to mediate the diversity of identified PAR1 signaling outputs.
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Affiliation(s)
- Orla Willis Fox
- Irish Centre for Vascular Biology, Royal College of Surgeons in Ireland, Dublin, Ireland
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Roger J S Preston
- Irish Centre for Vascular Biology, Royal College of Surgeons in Ireland, Dublin, Ireland
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland
- National Children's Research Centre, Our Lady's Children's Hospital Crumlin, Dublin, Ireland
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Macrophage-secreted MMP9 induces mesenchymal transition in pancreatic cancer cells via PAR1 activation. Cell Oncol (Dordr) 2020; 43:1161-1174. [PMID: 32809114 PMCID: PMC7717035 DOI: 10.1007/s13402-020-00549-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2020] [Indexed: 12/30/2022] Open
Abstract
PURPOSE Targeting tumor-infiltrating macrophages limits progression and improves chemotherapeutic responses in pancreatic ductal adenocarcinoma (PDAC). Protease-activated receptor (PAR)1 drives monocyte/macrophage recruitment, and stromal ablation of PAR1 limits cancer growth and enhances gemcitabine sensitivity in experimental PDAC. However, the functional interplay between PAR1, macrophages and tumor cells remains unexplored. Here we address the PAR1-macrophage-tumor cell crosstalk and assess its contributions to tumor progression. METHODS PAR1 expression and macrophage infiltration were correlated in primary PDAC biopsies using gene expression datasets and tissue microarrays. Medium transfer experiments were used to evaluate the functional consequences of macrophage-tumor cell crosstalk and to assess the contribution of PAR1 to the observed responses. PAR1 cleavage assays were used to identify a macrophage-secreted PAR1 agonist, and the effects of candidate proteases were assessed in medium transfer experiments with specific inhibitors and/or recombinant agonist. RESULTS PAR1 expression correlates with macrophage infiltration in primary PDACs, and macrophages induce mesenchymal transition of PDAC cells through PAR1 activation. Protease profiling identified macrophage-secreted matrix metalloprotease 9 (MMP9) as the relevant PAR1 agonist in PDAC. PAR1 and/or MMP9 inhibition limited macrophage-driven mesenchymal transition. Likewise, preventing mesenchymal transition by silencing ZEB1 or by pharmacological inhibition of the MMP9/PAR1 axis significantly reduced the ability of tumor cells to survive the anti-tumor activities of macrophages. CONCLUSION Macrophages secrete MMP9, which acts upon PDAC cell PAR1 to induce mesenchymal transition. This macrophage-induced mesenchymal transition supports the tumor-promoting role of macrophage influx, explaining the dichotomous contributions of these immune cells to tumor growth.
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Byskov K, Le Gall SM, Thiede B, Camerer E, Kanse SM. Protease activated receptors (PAR)-1 and -2 mediate cellular effects of factor VII activating protease (FSAP). FASEB J 2019; 34:1079-1090. [PMID: 31914657 DOI: 10.1096/fj.201801986rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 01/30/2023]
Abstract
Factor VII activating protease (FSAP) is a circulating serine protease implicated in thrombosis, atherosclerosis, stroke, and cancer. Using an overexpression strategy, we have systematically investigated the role of protease activated receptors (PAR)-1, -2, -3, and -4 on FSAP-mediated signaling in HEK293T and A549 cells. Cleavage of PAR-reporter constructs and MAPK phosphorylation was used to monitor receptor activation. FSAP cleaved PAR-2 and to a lesser degree PAR-1, but not PAR-3 or PAR-4 in both cell types. Robust MAPK activation in response to FSAP was observed after PAR-2, but not PAR-1 overexpression in HEK293T. Recombinant serine protease domain of wild type FSAP, but not the Marburg I isoform of FSAP, could reproduce the effects of plasma purified FSAP. Canonical cleavage of both PARs was suggested by mass spectrometric analysis of synthetic peptide substrates from the N-terminus of PARs and site directed mutagenesis studies. Surprisingly, knockdown of endogenous PAR-1, but not PAR-2, prevented the apoptosis-inhibitory effect of FSAP, suggesting that PAR1 is nevertheless a direct or indirect target in some cell types. This molecular characterization of PAR-1 and -2 as cellular receptors of FSAP will help to define the actions of FSAP in the context of cancer and vascular biology.
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Affiliation(s)
- Kristina Byskov
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Sylvain M Le Gall
- INSERM U970, Paris Cardiovascular Research Centre, Université de Paris, Paris, France
| | - Bernd Thiede
- Department of Biosciences, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
| | - Eric Camerer
- INSERM U970, Paris Cardiovascular Research Centre, Université de Paris, Paris, France
| | - Sandip M Kanse
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.,Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
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Role of the protease-activated receptor 1 in regulating the function of glial cells within central and peripheral nervous system. J Neural Transm (Vienna) 2019; 126:1259-1271. [DOI: 10.1007/s00702-019-02075-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 08/31/2019] [Indexed: 02/07/2023]
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Abstract
PURPOSE OF REVIEW Activated protein C (APC) is a homeostatic coagulation protease with anticoagulant and cytoprotective activities. Focusing on APC's effects in the brain, this review discusses three different scenarios that illustrate how APC functions are intimately affecting the physiology and pathophysiology of the brain. RECENT FINDINGS Cytoprotective APC therapy holds promise for the treatment of ischemic stroke, and a recently completed trial suggested that cytoprotective-selective 3K3A-APC reduced bleeding in ischemic stroke patients. In contrast, APC's anticoagulant activity contributes to brain bleeding as shown by the disproportional upregulation of APC generation in cerebral cavernous malformations lesions in mice. However, too little APC generation also contributes to maladies of the brain, such as in case of cerebral malaria where the binding of infected erythrocytes to the endothelial protein C receptor (EPCR) may interfere with the EPCR-dependent functions of the protein C pathway. Furthermore, discoveries of new activities of APC such as the inhibition of the NLRP3-mediated inflammasome and of new applications of APC therapy such as in Alzheimer's disease and graft-versus-host disease continue to advance our knowledge of this important proteolytic regulatory system. SUMMARY APC's many activities or lack thereof are intimately involved in multiple neuropathologies, providing abundant opportunities for translational research.
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50
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Flaumenhaft R. Protease-Activated Receptor-1 Signaling: The Big Picture. Arterioscler Thromb Vasc Biol 2019; 37:1809-1811. [PMID: 28954808 DOI: 10.1161/atvbaha.117.310068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Robert Flaumenhaft
- From the Beth Israel Deaconess Medical Center, Department of Medicine, Harvard Medical School, Boston, MA.
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