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Ahnström J, Petri A, Crawley JT. Tissue factor pathway inhibitor - cofactor-dependent regulation of the initiation of coagulation. Curr Opin Hematol 2024:00062752-990000000-00087. [PMID: 39259668 DOI: 10.1097/moh.0000000000000838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
PURPOSE OF REVIEW In humans, tissue factor pathway inhibitor (TFPI) exists in two alternatively spliced isoforms, TFPIα and TFPIβ. TFPIα consists of three Kunitz domains (K1, K2 and K3) and a highly basic C-terminal tail. K1 inhibits the tissue factor-activated factor VII complex, K2 specifically inhibits activated factor X, K3 is essential for interaction with its cofactor, protein S, and the basic C-terminus is binds factor V-short (FV-short) with high affinity. TFPIβ consists of K1 and K2 that is glycosylphosphatidylinositol anchored directly to cell surfaces. This review explores the structure/function of TFPI and its cofactors (protein S and FV-short), and the relative contributions that different TFPI isoforms may play in haemostatic control. RECENT FINDINGS Recent data have underscored the importance of TFPIα function and its reliance on its cofactors, protein S and FV-short, in influencing haemostatic control as well as bleeding and thrombotic risk. SUMMARY TFPIα is likely the most important pool of TFPI in modifying the risk of thrombosis and bleeding. TFPIα forms a trimolecular complex with FV-short and protein S in plasma. FV-short expression levels control the circulating levels of TFPIα, whereas protein S exerts essential cofactor mediated augmentation of it anticoagulant function.
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Affiliation(s)
- Josefin Ahnström
- Centre for Haematology, Department of Immunology and Inflammation, Hammersmith Hospital Campus, Imperial College London, London, UK
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Wu X, Li L, Lu Z, Hu X, Lu Y, Liu Y, Xu G, Ding Q, Wang X, Wu W, Jin P, Dai J. Heterozygous Prothrombin Mutation-Associated Thrombophilia. Thromb Haemost 2024. [PMID: 38914130 DOI: 10.1055/a-2350-8338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
BACKGROUND Venous thromboembolism (VTE) is predisposed by thrombotic mutations in patients with hereditary thrombophilia. Although prothrombin deficiencies caused by homozygous or compound heterozygous mutations are associated with bleeding diathesis, rare cases have shown a correlation between heterozygous prothrombin mutations and thrombosis. MATERIALS AND METHODS We surveyed genetic variants involved in thrombosis and hemostasis in 347 patients with unprovoked VTE or having a positive family history of thrombosis. For patients identified with heterozygous prothrombin mutations, we conducted family investigations and performed a thrombin generation test (TGT) to elucidate the thrombotic risk. Novel mutants were expressed and subjected to functional assays to clarify the underlying thrombotic mechanisms. RESULTS Heterozygous prothrombin mutations were identified in 3.5% of patients (12/347), including three novel mutations Phe382Ser, Phe382Leu, and Asp597Tyr found in one patient each, as well as previously reported Arg541Trp mutation in four patients and Arg596Gln mutation in five patients. A total of 42 mutation carriers were identified within the 12 pedigrees, among whom 64.3% (27/42) had experienced thrombotic events. TGT results demonstrated hypercoagulability for carriers of the five mutations, with Arg596Gln showing the highest thrombin generation potential followed by Arg541Trp. The Phe382-associated mutations severely impaired thrombomodulin-binding ability of thrombin, resulting in obviously reduced protein C (PC) activation. The Asp597Tyr mutation exhibited a mild reduction in both inactivation by antithrombin and PC activation reactions. CONCLUSION The presence of heterozygous prothrombin mutations represents a potential genetic predisposition for VTE. All thrombosis-associated mutations potentiate coagulation activity by either conferring antithrombin resistance and/or impairing PC pathway activity.
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Affiliation(s)
- Xi Wu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lei Li
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhengjing Lu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaobo Hu
- Shanghai Center for Clinical Laboratory, Shanghai, China
| | - Yeling Lu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Liu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guanqun Xu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiulan Ding
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuefeng Wang
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Laboratory Medicine, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Collaborative Innovation Center of Hematology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenman Wu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Laboratory Medicine, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Collaborative Innovation Center of Hematology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peipei Jin
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Dai
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Taune VS, Zabczyk M, He S, Ågren A, Blombäck M, Wallén H, Skeppholm M. Effects of dabigatran, rivaroxaban, and apixaban on fibrin network permeability, thrombin generation, and fibrinolysis. Scand J Clin Lab Invest 2024; 84:257-267. [PMID: 38953609 DOI: 10.1080/00365513.2024.2369993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 05/19/2024] [Accepted: 06/16/2024] [Indexed: 07/04/2024]
Abstract
INTRODUCTION There are important pharmacological differences between direct oral anticoagulants (DOAC) and a deeper knowledge of how they influence different aspects of hemostasis in patients on treatment is desirable. MATERIALS AND METHODS Blood samples from patients on dabigatran (n = 23), rivaroxaban (n = 26), or apixaban (n = 20) were analyzed with a fibrin network permeability assay, a turbidimetric clotting and lysis assay, the calibrated automated thrombogram (CAT), plasma levels of thrombin-antithrombin complex (TAT) and D-dimer, as well as DOAC concentrations, PT-INR and aPTT. As a comparison, we also analyzed samples from 27 patients on treatment with warfarin. RESULTS Patients on dabigatran had a more permeable fibrin network, longer lag time (CAT and turbidimetric assay), and lower levels of D-dimer in plasma, compared with patients on rivaroxaban- and apixaban treatment, and a more permeable fibrin network than patients on warfarin. Clot lysis time was slightly longer in patients on dabigatran than in patients on rivaroxaban. Warfarin patients formed a more permeable fibrin network than patients on apixaban, had longer lag time than patients on rivaroxaban (CAT assay), and lower peak thrombin and ETP compared to patients on treatment with both FXa-inhibitors. CONCLUSIONS Results from this study indicate dabigatran treatment is a more potent anticoagulant than apixaban and rivaroxaban. However, as these results are not supported by clinical data, they are probably more related to the assays used and highlight the difficulty of measuring and comparing the effect of anticoagulants.
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Affiliation(s)
- Viktor Schutz Taune
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | - Michal Zabczyk
- Department of Thromboembolic Disorders, Institute of Cardiology, Medical College, John Paul II Hospital, Jagiellonian University, Kraków, Poland
| | - Shu He
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | - Anna Ågren
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
- Department of Molecular Medicine & Surgery (Coagulation), Karolinska Institutet, Stockholm, Sweden
| | - Margareta Blombäck
- Department of Molecular Medicine & Surgery (Coagulation), Karolinska Institutet, Stockholm, Sweden
| | - Håkan Wallén
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | - Mika Skeppholm
- Division of Cardiovascular Medicine, Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
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Oh D, Chae YJ, Teoh JY, Yim B, Yoo D, Park Y, Kim J. Detection of α-Thrombin with Platelet Glycoprotein Ibα (GP1bα) for the Development of a Coagulation Marker. ACS OMEGA 2024; 9:13418-13426. [PMID: 38524497 PMCID: PMC10956406 DOI: 10.1021/acsomega.4c00010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 02/05/2024] [Accepted: 02/21/2024] [Indexed: 03/26/2024]
Abstract
The detection of prothrombotic markers is crucial for understanding thromboembolism and assessing the effectiveness of anticoagulant drugs. α-Thrombin is a marker that plays a critical role in the coagulation cascade process. However, the detection of this enzymatic molecule was hindered by the absence of an efficient modality in the clinical environment. Previously, we reported that one α-thrombin interacts with two α-chains of glycoprotein Ib (GPIbα), i.e., multivalent protein binding (MPB), using bioresponsive hydrogel nanoparticles (nanogels) and optical microscopy. In this study, we demonstrated that GPIbα-mediated platforms led to the highly sensitive and quantitative detection of α-thrombin in various diagnostic systems. Initially, a bioresponsive nanogel-based surface plasmon resonance (nSPR) assay was developed that responds to the MPB of α-thrombin to GPIbα. The use of GPIbα for the detection of α-thrombin was further validated using the enzyme-linked immunosorbent assay, which is a gold-standard protein detection technique. Additionally, GPIbα-functionalized latex beads were developed to perform latex agglutination (LA) assays, which are widely used with hospital diagnostic instruments. Notably, the nSPR and LA assays exhibited a nearly 1000-fold improvement in sensitivity for α-thrombin detection compared to our previous optical microscopy method. The superiority of our GPIbα-mediated platforms lies in their stability for α-thrombin detection through protein-protein interactions. By contrast, assays relying on α-thrombin enzymatic activity using substrates face the challenge of a rapid decrease in postsample collection. These results suggested that the MPB of α-thrombin to GPIbα is an ideal mode for clinical α-thrombin detection, particularly in outpatient settings.
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Affiliation(s)
- Doogie Oh
- R&D
Center, Scholar Foxtrot Co. Ltd., Seoul 02796, Republic of Korea
- Department
of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Republic
of Korea
| | - Yun Jin Chae
- R&D
Center, Scholar Foxtrot Co. Ltd., Seoul 02796, Republic of Korea
| | - Jie Ying Teoh
- Department
of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Bora Yim
- R&D
Center, Scholar Foxtrot Co. Ltd., Seoul 02796, Republic of Korea
| | - Dongwon Yoo
- Department
of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
- Center
for Nanoparticle Research, Institute for
Basic Science (IBS), Seoul 08826, Republic
of Korea
| | - Yongdoo Park
- Department
of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Republic
of Korea
| | - Jongseong Kim
- R&D
Center, Scholar Foxtrot Co. Ltd., Seoul 02796, Republic of Korea
- Department
of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Republic
of Korea
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Liu Y, Zhang Y, Yao W, Chen P, Cao Y, Shan M, Yu S, Zhang L, Bao B, Cheng FF. Recent Advances in Topical Hemostatic Materials. ACS APPLIED BIO MATERIALS 2024; 7:1362-1380. [PMID: 38373393 DOI: 10.1021/acsabm.3c01144] [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] [Indexed: 02/21/2024]
Abstract
Untimely or improper treatment of traumatic bleeding may cause secondary injuries and even death. The traditional hemostatic modes can no longer meet requirements of coping with complicated bleeding emergencies. With scientific and technological advancements, a variety of topical hemostatic materials have been investigated involving inorganic, biological, polysaccharide, and carbon-based hemostatic materials. These materials have their respective merits and defects. In this work, the application and mechanism of the major hemostatic materials, especially some hemostatic nanomaterials with excellent adhesion, good biocompatibility, low toxicity, and high adsorption capacity, are summarized. In the future, it is the prospect to develop multifunctional hemostatic materials with hemostasis and antibacterial and anti-inflammatory properties for promoting wound healing.
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Affiliation(s)
- Yang Liu
- Jiangsu Collaborative Innovation Centre of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Centre of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province China
| | - Yi Zhang
- Jiangsu Collaborative Innovation Centre of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Centre of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province China
| | - Weifeng Yao
- Jiangsu Collaborative Innovation Centre of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Centre of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province China
| | - Peidong Chen
- Jiangsu Collaborative Innovation Centre of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Centre of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province China
| | - Yudan Cao
- Jiangsu Collaborative Innovation Centre of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Centre of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province China
| | - Mingqiu Shan
- Jiangsu Collaborative Innovation Centre of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Centre of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province China
| | - Sheng Yu
- Jiangsu Collaborative Innovation Centre of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Centre of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province China
| | - Li Zhang
- Jiangsu Collaborative Innovation Centre of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Centre of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province China
| | - Beihua Bao
- Jiangsu Collaborative Innovation Centre of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Centre of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province China
| | - Fang-Fang Cheng
- Jiangsu Collaborative Innovation Centre of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Centre of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province China
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Kullaya VI, Temba GS, Vadaq N, Njau J, Boahen CK, Nkambule BB, Thibord F, Chen MH, Pecht T, Lyamuya F, Kumar V, Netea MG, Mmbaga BT, van der Ven A, Johnson AD, de Mast Q. Genetic and nongenetic drivers of platelet reactivity in healthy Tanzanian individuals. J Thromb Haemost 2024; 22:805-817. [PMID: 38029856 DOI: 10.1016/j.jtha.2023.11.014] [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: 06/27/2023] [Revised: 11/14/2023] [Accepted: 11/16/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND Platelets play a key role in hemostasis, inflammation, and cardiovascular diseases. Platelet reactivity is highly variable between individuals. The drivers of this variability in populations from Sub-Saharan Africa remain largely unknown. OBJECTIVES We aimed to investigate the nongenetic and genetic determinants of platelet reactivity in healthy adults living in a rapidly urbanizing area in Northern Tanzania. METHODS Platelet activation and reactivity were measured by platelet P-selectin expression and the binding of fibrinogen in unstimulated blood and after ex vivo stimulation with adenosine diphosphate and PAR-1 and PAR-4 ligands. We then analyzed the associations of platelet parameters with host genetic and nongenetic factors, environmental factors, plasma inflammatory markers, and plasma metabolites. RESULTS Only a few associations were found between platelet reactivity parameters and plasma inflammatory markers and nongenetic host and environmental factors. In contrast, untargeted plasma metabolomics revealed a large number of associations with food-derived metabolites, including phytochemicals that were previously reported to inhibit platelet reactivity. Genome-wide single-nucleotide polymorphism genotyping identified 2 novel single-nucleotide polymorphisms (rs903650 and rs4789332) that were associated with platelet reactivity at the genome-wide level (P < 5 × 10-8) as well as a number of variants in the PAR4 gene (F2RL3) that were associated with PAR4-induced reactivity. CONCLUSION Our study uncovered factors that determine variation in platelet reactivity in a population in East Africa that is rapidly transitioning to an urban lifestyle, including the importance of genetic ancestry and the gradual abandoning of the traditional East African diet.
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Affiliation(s)
- Vesla I Kullaya
- Kilimanjaro Clinical Research Institute, Kilimanjaro Christian Medical Center, Moshi, Tanzania; Department of Medical Biochemistry and Molecular Biology, Kilimanjaro Christian Medical University College, Moshi, Tanzania
| | - Godfrey S Temba
- Department of Medical Biochemistry and Molecular Biology, Kilimanjaro Christian Medical University College, Moshi, Tanzania; Department of Internal Medicine, Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Nadira Vadaq
- Department of Internal Medicine, Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Judith Njau
- Kilimanjaro Clinical Research Institute, Kilimanjaro Christian Medical Center, Moshi, Tanzania
| | - Collins K Boahen
- Department of Internal Medicine, Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Bongani B Nkambule
- School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Florian Thibord
- National Heart, Lung, and Blood Institute, Population Sciences Branch, Framingham, Massachusetts, USA
| | - Ming-Huei Chen
- National Heart, Lung, and Blood Institute, Population Sciences Branch, Framingham, Massachusetts, USA
| | - Tal Pecht
- Department for Genomics and Immunoregulation, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
| | - Furaha Lyamuya
- Kilimanjaro Clinical Research Institute, Kilimanjaro Christian Medical Center, Moshi, Tanzania
| | - Vinod Kumar
- Department of Internal Medicine, Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Genetics, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Mihai G Netea
- Department of Internal Medicine, Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands; Department for Immunology and Metabolism, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
| | - Blandina T Mmbaga
- Kilimanjaro Clinical Research Institute, Kilimanjaro Christian Medical Center, Moshi, Tanzania; Department of Pediatrics, Kilimanjaro Christian Medical University College, Moshi, Tanzania
| | - Andre van der Ven
- Department of Internal Medicine, Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Andrew D Johnson
- National Heart, Lung, and Blood Institute, Population Sciences Branch, Framingham, Massachusetts, USA
| | - Quirijn de Mast
- Department of Internal Medicine, Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands.
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Zhu F, Zhao Q. CRISPR/Cas12a linked sandwich aptamer assay for sensitive detection of thrombin. Anal Chim Acta 2024; 1287:342106. [PMID: 38182384 DOI: 10.1016/j.aca.2023.342106] [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: 08/25/2023] [Revised: 12/01/2023] [Accepted: 12/02/2023] [Indexed: 01/07/2024]
Abstract
BACKGROUND Thrombin is a serine protease and hemostasis regulator with multiple functions and recognized as an important biomarker for diseases, and sensitive detection of thrombin is of significance for clinical diagnostics and disease monitoring. Recently, the target-triggered nonspecific single-stranded deoxyribonuclease activity of CRISPR/Cas system is discovered, making it become a powerful tool in assay developments due to the ease of signal amplification. In the short period of development, many CRISPR based nucleic acid detection methods have already played a critical role in clinical diagnostics. However, the application of CRISPR/Cas system for protein biomarkers remains limited. RESULTS Here we describe a CRISPR/Cas12a linked sandwich aptamer assay for detection of thrombin, which was based on the formation of a sandwich complex of target by using a capture aptamer or antibody coated on the microplate and a well-designed detection DNA strand. The detection DNA strand contained an anti-thrombin aptamer and an active DNA of Cas12a, thus the sandwich complex was labeled with the active DNA. The active DNA triggered activity of Cas12a in indiscriminately cleaving fluorophore and quencher labeled DNA reporters, causing significant fluorescence increase. Our method enabled sensitive detection of thrombin down to 10 pM, and it showed high selectivity for thrombin. The assay exhibited good performance in diluted serum samples, demonstrating the applicability for thrombin analysis in the real media. SIGNIFICANCE This assay combines the merits of high affinity of aptamer, trans-cleavage activity of Cas12a, high selectivity of sandwich format analysis, and high-throughput detection of microplate assay, and it shows promise in applications.
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Affiliation(s)
- Fengxi Zhu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qiang Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China; School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou, 310024, China.
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8
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Yoo J, Kwon I, Kim S, Kim HM, Kim YD, Nam HS, Heo JH. Coagulation Factor Expression and Composition of Arterial Thrombi in Cancer-Associated Stroke. Stroke 2023; 54:2981-2989. [PMID: 37886852 DOI: 10.1161/strokeaha.123.044910] [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: 08/21/2023] [Accepted: 09/29/2023] [Indexed: 10/28/2023]
Abstract
BACKGROUND Cancer is associated with an increased risk of stroke. Tumor cells activate platelets, induce a coagulation cascade, and generate thrombin. The composition of thrombi may reflect the mechanism of thrombosis, aiding the determination of the treatment strategy. Here, we investigated the composition and expression of coagulation factors in the thrombi of patients with cancer-associated stroke. METHODS Patients with stroke who underwent endovascular thrombectomy between September 2014 and June 2020 and whose cerebral thrombi were obtained were divided into those with cancer-associated stroke (cancer group) and propensity score-matched patients without cancer (control group), using 1:1 matching based on age and sex. Immunohistochemistry was performed of the thrombi, and the composition and expression of coagulation factors were compared between groups. RESULTS Among the 320 patients who underwent endovascular thrombectomy and who had thrombi obtained, this study included 23 patients with cancer and 23 matched controls. In both groups, the median age was 65 years, and 12 patients (52.2%) were men. Platelet composition was significantly higher in the cancer group than in the control group (median [interquartile range], 51.3% [28.0%-61.4%] versus 9.5% [4.8%-14.0%]; P<0.001). Among coagulation factors, thrombin (26.2% [16.2%-52.7%] versus 4.5% [1.3%-7.2%]; P<0.001) and tissue factors (0.60% [0.34%-2.06%] versus 0.37% [0.22%-0.60%]; P=0.024) were higher and factor X was lower (1.25% [0.39%-3.60%] versus 2.33% [1.67%-4.48%]; P=0.034) in the cancer group. There was a positive correlation between thrombin and platelets in the cancer group (r=0.666; P=0.001) but not in the control group (r=-0.167; P=0.627). CONCLUSIONS Cerebral thrombi in patients with cancer-associated stroke showed higher proportions of platelets, thrombin, and tissue factors, suggesting their key roles in arterial thrombosis in cancer and providing a therapeutic perspective for preventing stroke in patients with cancer-associated stroke.
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Affiliation(s)
- Joonsang Yoo
- Department of Neurology, Yongin Severance Hospital (J.Y.), Yonsei University College of Medicine, Korea
| | - Il Kwon
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Seoul, South Korea (I.K., S.K., Y.D.K., H.S.N., J.H.H.)
| | - Sungeun Kim
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Seoul, South Korea (I.K., S.K., Y.D.K., H.S.N., J.H.H.)
| | - Hye Min Kim
- Department of Pathology, Yongin Severance Hospital (H.M.K.), Yonsei University College of Medicine, Korea
| | - Young Dae Kim
- Department of Neurology, Severance Hospital (Y.D.K., H.S.N., J.H.H.), Yonsei University College of Medicine, Korea
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Seoul, South Korea (I.K., S.K., Y.D.K., H.S.N., J.H.H.)
| | - Hyo Suk Nam
- Department of Neurology, Severance Hospital (Y.D.K., H.S.N., J.H.H.), Yonsei University College of Medicine, Korea
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Seoul, South Korea (I.K., S.K., Y.D.K., H.S.N., J.H.H.)
| | - Ji Hoe Heo
- Department of Neurology, Severance Hospital (Y.D.K., H.S.N., J.H.H.), Yonsei University College of Medicine, Korea
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Seoul, South Korea (I.K., S.K., Y.D.K., H.S.N., J.H.H.)
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Stierschneider A, Wiesner C. Shedding light on the molecular and regulatory mechanisms of TLR4 signaling in endothelial cells under physiological and inflamed conditions. Front Immunol 2023; 14:1264889. [PMID: 38077393 PMCID: PMC10704247 DOI: 10.3389/fimmu.2023.1264889] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/08/2023] [Indexed: 12/18/2023] Open
Abstract
Toll-like receptor 4 (TLR4) are part of the innate immune system. They are capable of recognizing pathogen-associated molecular patterns (PAMPS) of microbes, and damage-associated molecular patterns (DAMPs) of damaged tissues. Activation of TLR4 initiates downstream signaling pathways that trigger the secretion of cytokines, type I interferons, and other pro-inflammatory mediators that are necessary for an immediate immune response. However, the systemic release of pro-inflammatory proteins is a powerful driver of acute and chronic inflammatory responses. Over the past decades, immense progress has been made in clarifying the molecular and regulatory mechanisms of TLR4 signaling in inflammation. However, the most common strategies used to study TLR4 signaling rely on genetic manipulation of the TLR4 or the treatment with agonists such as lipopolysaccharide (LPS) derived from the outer membrane of Gram-negative bacteria, which are often associated with the generation of irreversible phenotypes in the target cells or unintended cytotoxicity and signaling crosstalk due to off-target or pleiotropic effects. Here, optogenetics offers an alternative strategy to control and monitor cellular signaling in an unprecedented spatiotemporally precise, dose-dependent, and non-invasive manner. This review provides an overview of the structure, function and signaling pathways of the TLR4 and its fundamental role in endothelial cells under physiological and inflammatory conditions, as well as the advances in TLR4 modulation strategies.
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Affiliation(s)
| | - Christoph Wiesner
- Department Science & Technology, Institute Biotechnology, IMC Krems University of Applied Sciences, Krems, Austria
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10
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Wu D, Salsbury FR. Unraveling the Role of Hydrogen Bonds in Thrombin via Two Machine Learning Methods. J Chem Inf Model 2023; 63:3705-3718. [PMID: 37285464 PMCID: PMC11164249 DOI: 10.1021/acs.jcim.3c00153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Hydrogen bonds play a critical role in the folding and stability of proteins, such as proteins and nucleic acids, by providing strong and directional interactions. They help to maintain the secondary and 3D structure of proteins, and structural changes in these molecules often result from the formation or breaking of hydrogen bonds. To gain insights into these hydrogen bonding networks, we applied two machine learning models - a logistic regression model and a decision tree model - to study four variants of thrombin: wild-type, ΔK9, E8K, and R4A. Our results showed that both models have their unique advantages. The logistic regression model highlighted potential key residues (GLU295) in thrombin's allosteric pathways, while the decision tree model identified important hydrogen bonding motifs. This information can aid in understanding the mechanisms of folding in proteins and has potential applications in drug design and other therapies. The use of these two models highlights their usefulness in studying hydrogen bonding networks in proteins.
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Affiliation(s)
- Dizhou Wu
- Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27106, United States
| | - Freddie R Salsbury
- Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27106, United States
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11
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Pandey G, Pandey P, Arya DK, Kanaujiya S, Deepak Kapoor D, Gupta RK, Ranjan S, Chidambaram K, Manickam B, Rajinikanth P. Multilayered nanofibrous scaffold of Polyvinyl alcohol/gelatin/poly (lactic-co-glycolic acid) enriched with hemostatic/antibacterial agents for rapid acute hemostatic wound healing. Int J Pharm 2023; 638:122918. [PMID: 37030638 DOI: 10.1016/j.ijpharm.2023.122918] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 04/09/2023]
Abstract
Electrospun nanofibers scaffolds show promising potential in wound healing applications. This work aims to fabricate nanofibrous wound dressing as a novel approach for a topical drug delivery system. Herein, the electrospinning technique is used to design and fabricate bioabsorbable nanofibrous scaffolds of Polyvinyl alcohol/gelatin/poly (lactic-co-glycolic acid) enriched with thrombin (TMB) as hemostatic agent and vancomycin (VCM) as anti-bacterial agent for a multifunctional platform to control excessive blood loss, inhibit bacterial growth and enhance wound healing. SEM, FTIR, XRD, in vitro drug release, antimicrobial studies, biofilm, cell viability assay, and in vivo study in a rat model were used to assess nanofiber's structural, mechanical, and biological aspects. SEM images confirms the diameter of nanofibers which falls within the range from 150 to 300 nm for all the batches. Excellent swelling index data makes it suitable to absorb wound exudates. In-vitro drug release data shows sustained release behavior of nanofiber. Nanofibers scaffolds showed biomimetic behavior and excellent biocompatibility. Moreover, scaffolds exhibited excellent antimicrobial and biofilm activity against Staphylococcus aureus. Nanofibrous scaffolds showed less bleeding time, rapid blood coagulation, and excellent wound closure in a rat model. ELISA study demonstrated the decreasing level of inflammatory markers, such as TNF-α, IL1β, and IL-6, making formulation promising for hemostatic wound healing applications. Finally, the study concludes that nanofibrous scaffolds loaded with TMB and VCM have promising potential as a dressing material for hemostatic wound healing applications.
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12
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Abdelfadiel E, Gunta R, Villuri BK, Afosah DK, Sankaranarayanan NV, Desai UR. Designing Smaller, Synthetic, Functional Mimetics of Sulfated Glycosaminoglycans as Allosteric Modulators of Coagulation Factors. J Med Chem 2023; 66:4503-4531. [PMID: 37001055 PMCID: PMC10108365 DOI: 10.1021/acs.jmedchem.3c00132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Indexed: 04/03/2023]
Abstract
Natural glycosaminoglycans (GAGs) are arguably the most diverse collection of natural products. Unfortunately, this bounty of structures remains untapped. Decades of research has realized only one GAG-like synthetic, small-molecule drug, fondaparinux. This represents an abysmal output because GAGs present a frontier that few medicinal chemists, and even fewer pharmaceutical companies, dare to undertake. GAGs are heterogeneous, polymeric, polydisperse, highly water soluble, synthetically challenging, too rapidly cleared, and difficult to analyze. Additionally, GAG binding to proteins is not very selective and GAG-binding sites are shallow. This Perspective attempts to transform this negative view into a much more promising one by highlighting recent advances in GAG mimetics. The Perspective focuses on the principles used in the design/discovery of drug-like, synthetic, sulfated small molecules as allosteric modulators of coagulation factors, such as antithrombin, thrombin, and factor XIa. These principles will also aid the design/discovery of sulfated agents against cancer, inflammation, and microbial infection.
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Affiliation(s)
- Elsamani
I. Abdelfadiel
- Institute
for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia 23219, United States
| | - Rama Gunta
- Institute
for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia 23219, United States
- Department
of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| | - Bharath Kumar Villuri
- Institute
for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia 23219, United States
- Department
of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| | - Daniel K. Afosah
- Institute
for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia 23219, United States
- Department
of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| | - Nehru Viji Sankaranarayanan
- Institute
for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia 23219, United States
- Department
of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| | - Umesh R. Desai
- Institute
for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia 23219, United States
- Department
of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298, United States
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13
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Fenoy GE, Hasler R, Lorenz C, Movilli J, Marmisollé WA, Azzaroni O, Huskens J, Bäuerle P, Knoll W. Interface Engineering of "Clickable" Organic Electrochemical Transistors toward Biosensing Devices. ACS APPLIED MATERIALS & INTERFACES 2023; 15:10885-10896. [PMID: 36791086 PMCID: PMC9982818 DOI: 10.1021/acsami.2c21493] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
"Clickable" organic electrochemical transistors (OECTs) allow the reliable and straightforward functionalization of electronic devices through the well-known click chemistry toolbox. In this work, we study various aspects of the click chemistry-based interface engineering of "clickable" OECTs. First, different channel architectures are investigated, showing that PEDOT-N3 films can properly work as a channel of the transistors. Furthermore, the Cu(I)-catalyzed click reaction of ethynyl-ferrocene is studied under different reaction conditions, endowing the spatial control of the functionalization. The strain-promoted and catalyst-free cycloaddition of a dibenzocyclooctyne-derivatized poly-l-lysine (PLL-DBCO) is also performed on the OECTs and validated by a fiber optic (FO)-SPR setup. The further immobilization of an azido-modified HD22 aptamer yields OECT-based biosensors that are employed for the recognition of thrombin. Finally, their performance is evaluated against previously reported architectures, showing higher density of the immobilized HD22 aptamer, and originating similar KD values and higher maximum signal change upon analyte recognition.
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Affiliation(s)
- Gonzalo E. Fenoy
- AIT
Austrian Institute of Technology GmbH, Konrad-Lorenz Strasse 24, 3430 Tulln an der Donau, Austria
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas
(INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP)—CONICET, 64 and 113, 1900 La Plata, Argentina
| | - Roger Hasler
- AIT
Austrian Institute of Technology GmbH, Konrad-Lorenz Strasse 24, 3430 Tulln an der Donau, Austria
| | - Christoph Lorenz
- Institute
for Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Jacopo Movilli
- Department
of Molecules & Materials, MESA+ Institute, Faculty of Science
and Technology, University of Twente, P.O. Box 217, AE 7500 Enschede, The Netherlands
| | - Waldemar A. Marmisollé
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas
(INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP)—CONICET, 64 and 113, 1900 La Plata, Argentina
| | - Omar Azzaroni
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas
(INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP)—CONICET, 64 and 113, 1900 La Plata, Argentina
- CEST-UNLP
Partner Lab for Bioelectronics (INIFTA), Diagonal 64 y 113, 1900 La Plata, Argentina
| | - Jurriaan Huskens
- Department
of Molecules & Materials, MESA+ Institute, Faculty of Science
and Technology, University of Twente, P.O. Box 217, AE 7500 Enschede, The Netherlands
| | - Peter Bäuerle
- Institute
for Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Wolfgang Knoll
- AIT
Austrian Institute of Technology GmbH, Konrad-Lorenz Strasse 24, 3430 Tulln an der Donau, Austria
- Danube
Private
University, Steiner Landstrasse
124, 3500 Krems, Austria
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14
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Crossen J, Shankar KN, Diamond SL. Investigating thrombin-loaded fibrin in whole blood clot microfluidic assay via fluorogenic peptide. Biophys J 2023; 122:697-712. [PMID: 36635963 PMCID: PMC9989883 DOI: 10.1016/j.bpj.2023.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/19/2022] [Accepted: 01/09/2023] [Indexed: 01/13/2023] Open
Abstract
During clotting under flow, thrombin rapidly generates fibrin, whereas fibrin potently sequesters thrombin. This co-regulation was studied using microfluidic whole blood clotting on collagen/tissue factor, followed by buffer wash, and a start/stop cycling flow assay using the thrombin fluorogenic substrate, Boc-Val-Pro-Arg-AMC. After 3 min of clotting (100 s-1) and 5 min of buffer wash, non-elutable thrombin activity was easily detected during cycles of flow cessation. Non-elutable thrombin was similarly detected in plasma clots or arterial whole blood clots (1000 s-1). This thrombin activity was ablated by Phe-Pro-Arg-chloromethylketone (PPACK), apixaban, or Gly-Pro-Arg-Pro to inhibit fibrin. Reaction-diffusion simulations predicted 108 nM thrombin within the clot. Heparin addition to the start/stop assay had little effect on fibrin-bound thrombin, whereas addition of heparin-antithrombin (AT) required over 6 min to inhibit the thrombin, indicating a substantial diffusion limitation. In contrast, heparin-AT rapidly inhibited thrombin within microfluidic plasma clots, indicating marked differences in fibrin structure and functionality between plasma clots and whole blood clots. Addition of GPVI-Fab to blood before venous or arterial clotting (200 or 1000 s-1) markedly reduced fibrin-bound thrombin, whereas GPVI-Fab addition after 90 s of clotting had no effect. Perfusion of AF647-fibrinogen over washed fluorescein isothiocyanate (FITC)-fibrin clots resulted in an intense red layer around, but not within, the original FITC-fibrin. Similarly, introduction of plasma/AF647-fibrinogen generated substantial red fibrin masses that did not penetrate the original green clots, demonstrating that fibrin cannot be re-clotted with fibrinogen. Overall, thrombin within fibrin is non-elutable, easily accessed by peptides, slowly accessed by average-sized proteins (heparin/AT), and not accessible to fresh fibrinogen.
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Affiliation(s)
- Jennifer Crossen
- Institute for Medicine and Engineering, Department of Chemical and Biomolecular Engineering, 1024 Vagelos Research Laboratory, University of Pennsylvania, Philadelphia, PA 19104
| | - Kaushik N Shankar
- Institute for Medicine and Engineering, Department of Chemical and Biomolecular Engineering, 1024 Vagelos Research Laboratory, University of Pennsylvania, Philadelphia, PA 19104
| | - Scott L Diamond
- Institute for Medicine and Engineering, Department of Chemical and Biomolecular Engineering, 1024 Vagelos Research Laboratory, University of Pennsylvania, Philadelphia, PA 19104.
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15
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Lin M, Yu L, Xiao L, Fan J. A cysteine enzyme hemostat for efficient heparin-tolerant blood coagulation. J Mater Chem B 2023; 11:1079-1089. [PMID: 36625414 DOI: 10.1039/d2tb02220f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
It is challenging to stop bleeding effectively in patients treated with heparin which leads to enhanced risk of uncontrolled bleeding during operation. Herein, we report an easy-to-use and heparin-tolerant hemostatic agent based on a thrombin-like cysteine enzyme (papain), which catalyzes the hydrolysis of fibrinogen and cross-linking of fibrin clots. A papain-based hemostat with increased procoagulant activity is developed through immobilizing papain on the cellulose carrier, which displays short clotting time in both normal and heparinized plasmas. The excellent hemostatic performance of the papain-based hemostat is further confirmed with reduced hemostatic time and limited blood loss in a mouse tail amputation model, rabbit auricular artery injury model and rat liver injury model, in which a natural coagulation system fails to function on account of heparin. This bio-hemostat has great potential to reverse the effect of heparin and stop topical hemorrhage rapidly in surgical procedures.
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Affiliation(s)
- Mengchi Lin
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310027, China. .,Department of Gastroenterology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Lisha Yu
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310027, China. .,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Liping Xiao
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Jie Fan
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
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16
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Sanz-Horta R, Matesanz A, Gallardo A, Reinecke H, Jorcano JL, Acedo P, Velasco D, Elvira C. Technological advances in fibrin for tissue engineering. J Tissue Eng 2023; 14:20417314231190288. [PMID: 37588339 PMCID: PMC10426312 DOI: 10.1177/20417314231190288] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/11/2023] [Indexed: 08/18/2023] Open
Abstract
Fibrin is a promising natural polymer that is widely used for diverse applications, such as hemostatic glue, carrier for drug and cell delivery, and matrix for tissue engineering. Despite the significant advances in the use of fibrin for bioengineering and biomedical applications, some of its characteristics must be improved for suitability for general use. For example, fibrin hydrogels tend to shrink and degrade quickly after polymerization, particularly when they contain embedded cells. In addition, their poor mechanical properties and batch-to-batch variability affect their handling, long-term stability, standardization, and reliability. One of the most widely used approaches to improve their properties has been modification of the structure and composition of fibrin hydrogels. In this review, recent advances in composite fibrin scaffolds, chemically modified fibrin hydrogels, interpenetrated polymer network (IPN) hydrogels composed of fibrin and other synthetic or natural polymers are critically reviewed, focusing on their use for tissue engineering.
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Affiliation(s)
- Raúl Sanz-Horta
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, Spanish National Research Council (ICTP-CSIC), Madrid, Spain
| | - Ana Matesanz
- Department of Bioengineering, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
- Department of Electronic Technology, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
| | - Alberto Gallardo
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, Spanish National Research Council (ICTP-CSIC), Madrid, Spain
| | - Helmut Reinecke
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, Spanish National Research Council (ICTP-CSIC), Madrid, Spain
| | - José Luis Jorcano
- Department of Bioengineering, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Pablo Acedo
- Department of Electronic Technology, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
| | - Diego Velasco
- Department of Bioengineering, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
- Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain
| | - Carlos Elvira
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, Spanish National Research Council (ICTP-CSIC), Madrid, Spain
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17
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Krissanaprasit A, Key C, Froehlich K, LaBean TH. Production and Testing of RNA Origami Anticoagulants. Methods Mol Biol 2023; 2639:339-350. [PMID: 37166725 DOI: 10.1007/978-1-0716-3028-0_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Nucleic acid nanotechnology provides the ability to create unprecedented nanostructures with diverse architectures and functions that can be utilized in myriad fields. A set of self-folding, single-stranded RNA origami structures bearing thrombin RNA aptamers have been demonstrated to act as anticoagulants. Here, we describe the detailed methods of producing and testing of such RNA origami anticoagulants. This method highlights the potential of RNA origami for biomedical applications.
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Affiliation(s)
- Abhichart Krissanaprasit
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, USA
| | - Carson Key
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, USA
| | - Kristen Froehlich
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, USA
| | - Thomas H LaBean
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, USA.
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18
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Wauthier L, Favresse J, Hardy M, Douxfils J, Le Gal G, Roy P, van Es N, Ay C, ten Cate H, Lecompte T, Lippi G, Mullier F. D-dimer testing: A narrative review. Adv Clin Chem 2023. [DOI: 10.1016/bs.acc.2023.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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19
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Allosteric modulation of exosite 1 attenuates polyphosphate-catalyzed activation of factor XI by thrombin. JOURNAL OF THROMBOSIS AND HAEMOSTASIS : JTH 2023; 21:83-93. [PMID: 36695400 DOI: 10.1016/j.jtha.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 10/05/2022] [Accepted: 10/31/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Polyphosphate (polyP) promotes feedback activation of factor (F) XI by thrombin by serving as a template. The contribution of thrombin's exosites to these interactions is unclear. OBJECTIVES To determine the contribution of thrombin exosites 1 and 2 to polyP-induced potentiation of FXI activation by thrombin. METHODS The affinities of α-thrombin; K109E/110E-thrombin, an exosite 1 variant, or R93E-thrombin, an exosite 2 variant; FXI; and FXIa for polyP-70 were quantified using surface plasmon resonance in the absence or presence of exosite ligands. FXI was activated with α-thrombin or thrombin variants in the absence or presence of polyP-70 and exosite ligands. RESULTS α-Thrombin, K109/110E-thrombin, FXI, and FXIa bound polyP-70, whereas R93E-thrombin exhibited minimal binding. Exosite 1 and exosite 2 ligands attenuated thrombin binding to polyP-70. PolyP-70 accelerated the rate of FXI activation by α-thrombin and K109E/110E-thrombin but not R93E-thrombin up to 1500-fold in a bell-shaped, concentration-responsive manner. Exosite 1 and exosite 2 ligands had no impact on FXI activation by thrombin in the absence of polyP-70; however, in its presence, they attenuated activation by 40% to 65%. CONCLUSION PolyP-70 binds FXI and thrombin and promotes their interaction. Exosite 2 ligands attenuate activation because thrombin binds polyP-70 via exosite 2. Attenuation of FXI activation by exosite 1 ligands likely reflects allosteric modulation of exosite 2 and/or the active site of thrombin because exosite 1 is not directly involved in FXI activation. Therefore, allosteric modulation of thrombin's exosites may represent a novel strategy for downregulating FXI activation.
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20
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Fenoy GE, Hasler R, Quartinello F, Marmisollé WA, Lorenz C, Azzaroni O, Bäuerle P, Knoll W. "Clickable" Organic Electrochemical Transistors. JACS AU 2022; 2:2778-2790. [PMID: 36590273 PMCID: PMC9795466 DOI: 10.1021/jacsau.2c00515] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/03/2022] [Accepted: 11/04/2022] [Indexed: 06/17/2023]
Abstract
Interfacing the surface of an organic semiconductor with biological elements is a central quest when it comes to the development of efficient organic bioelectronic devices. Here, we present the first example of "clickable" organic electrochemical transistors (OECTs). The synthesis and characterization of an azide-derivatized EDOT monomer (azidomethyl-EDOT, EDOT-N3) are reported, as well as its deposition on Au-interdigitated electrodes through electropolymerization to yield PEDOT-N3-OECTs. The electropolymerization protocol allows for a straightforward and reliable tuning of the characteristics of the OECTs, yielding transistors with lower threshold voltages than PEDOT-based state-of-the-art devices and maximum transconductance voltage values close to 0 V, a key feature for the development of efficient organic bioelectronic devices. Subsequently, the azide moieties are employed to click alkyne-bearing molecules such as redox probes and biorecognition elements. The clicking of an alkyne-modified PEG4-biotin allows for the use of the avidin-biotin interactions to efficiently generate bioconstructs with proteins and enzymes. In addition, a dibenzocyclooctyne-modified thrombin-specific HD22 aptamer is clicked on the PEDOT-N3-OECTs, showing the application of the devices toward the development of organic transistors-based biosensors. Finally, the clicked OECTs preserve their electronic features after the different clicking procedures, demonstrating the stability and robustness of the fabricated transistors.
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Affiliation(s)
- Gonzalo E. Fenoy
- AIT
Austrian Institute of Technology GmbH, Konrad-Lorenz Straße 24, 3430 Tulln an der Donau, Austria
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas,
Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata − CONICET, 64 and 113, 1900 La Plata, Argentina
| | - Roger Hasler
- AIT
Austrian Institute of Technology GmbH, Konrad-Lorenz Straße 24, 3430 Tulln an der Donau, Austria
| | - Felice Quartinello
- Department
of Agrobiotechnology, IFA-Tulln, Institute
of Environmental Biotechnology, Konrad-Lorenz-Straße 20, 3430 Tulln an der Donau, Austria
| | - Waldemar A. Marmisollé
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas,
Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata − CONICET, 64 and 113, 1900 La Plata, Argentina
| | - Christoph Lorenz
- Institute
for Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Omar Azzaroni
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas,
Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata − CONICET, 64 and 113, 1900 La Plata, Argentina
| | - Peter Bäuerle
- Institute
for Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Wolfgang Knoll
- AIT
Austrian Institute of Technology GmbH, Konrad-Lorenz Straße 24, 3430 Tulln an der Donau, Austria
- Department
of Scientific Coordination and Management, Danube Private University, 3500 Krems, Austria
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21
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Sidonio RF, Hoffman M, Kenet G, Dargaud Y. Thrombin generation and implications for hemophilia therapies: A narrative review. Res Pract Thromb Haemost 2022; 7:100018. [PMID: 36798897 PMCID: PMC9926221 DOI: 10.1016/j.rpth.2022.100018] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/24/2022] [Accepted: 11/09/2022] [Indexed: 01/07/2023] Open
Abstract
Thrombin plays an essential role in achieving and maintaining effective hemostasis and stable clot formation. In people with hemophilia, deficiency of procoagulant factor (F)VIII or FIX results in insufficient thrombin generation, leading to reduced clot stability and various bleeding manifestations. A correlation has been found between the bleeding phenotype of people with hemophilia and the extent of thrombin generation, with individuals with increased thrombin generation being protected from bleeding and those with lower thrombin generation having increased bleeding tendency. The amount, location, and timing of thrombin generation have been found to affect the formation and stability of the resulting clot. The goal of all therapies for hemophilia is to enhance the generation of thrombin with the aim of restoring effective hemostasis and preventing or controlling bleeding; current treatment approaches rely on either replacing or mimicking the missing procoagulant (ie, FVIII or FIX) or rebalancing hemostasis through lowering natural anticoagulants, such as antithrombin. Global coagulation assays, such as the thrombin generation assay, may help guide the overall management of hemostasis by measuring and monitoring the hemostatic potential of patients and, thus, assessing the efficacy of treatment in people with hemophilia. Nevertheless, standardization of the thrombin generation assay is needed before it can be adopted in routine clinical practice.
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Affiliation(s)
- Robert F. Sidonio
- Aflac Cancer and Blood Disorders Center of Children's Healthcare of Atlanta, Atlanta, Georgia, USA,Department of Pediatrics, Emory University, Atlanta, Georgia, USA,Correspondence Robert F Sidonio, Aflac Cancer and Blood Disorders Center Children’s Healthcare of Atlanta, 1405 Clifton Road NE, Atlanta, GA 30322, USA. @nashgreenie
| | - Maureane Hoffman
- Department of Pathology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Gili Kenet
- The Israeli National Hemophilia Center and Thrombosis Unit, Sheba Medical Center, Tel Hashomer, Israel,The Amalia Biron Thrombosis Research Institute, Tel Aviv University, Tel Aviv, Israel
| | - Yesim Dargaud
- Unité d’Hémostase Clinique, Centre National de Reference de l'Hemophilie, Hôpital Cardiologique Louis Pradel, Université Lyon, Lyon, France
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22
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D-dimer Testing in Pulmonary Embolism with a Focus on Potential Pitfalls: A Narrative Review. Diagnostics (Basel) 2022; 12:diagnostics12112770. [PMID: 36428830 PMCID: PMC9689068 DOI: 10.3390/diagnostics12112770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 11/15/2022] Open
Abstract
D-dimer is a multifaceted biomarker of concomitant activation of coagulation and fibrinolysis, which is routinely used for ruling out pulmonary embolism (PE) and/or deep vein thrombosis (DVT) combined with a clinical pretest probability assessment. The intended use of the tests depends largely on the assay used, and local guidance should be applied. D-dimer testing may suffer from diagnostic errors occurring throughout the pre-analytical, analytical, and post-analytical phases of the testing process. This review aims to provide an overview of D-dimer testing and its value in diagnosing PE and discusses the variables that may impact the quality of its laboratory assessment.
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23
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Chen Y, Phoon PHY, Hwang NC. Heparin Resistance During Cardiopulmonary Bypass in Adult Cardiac Surgery. J Cardiothorac Vasc Anesth 2022; 36:4150-4160. [PMID: 35927191 PMCID: PMC9225936 DOI: 10.1053/j.jvca.2022.06.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/09/2022] [Accepted: 06/17/2022] [Indexed: 12/15/2022]
Abstract
The use of heparin for anticoagulation has changed the face of cardiac surgery by allowing a bloodless and motionless surgical field throughout the introduction of cardiopulmonary bypass (CPB). However, heparin is a drug with complex pharmacologic properties that can cause significant interpatient differences in terms of responsiveness. Heparin resistance during CPB is a weighty issue due to the catastrophic consequences stemming from inadequate anticoagulation, and the treatment of it necessitates a rationalized stepwise approach due to the multifactorial contributions toward this entity. The widespread use of activated clotting time (ACT) as a measurement of anticoagulation during CPB is examined, as it may be a false indicator of heparin resistance. Heparin resistance also has been repeatedly reported in patients infected with COVID-19, which deserves further exploration in this pandemic era. This review aims to examine the variability in heparin potency, underlying mechanisms, and limitations of using ACT for monitoring, as well as provide a framework towards the current management of heparin resistance.
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Affiliation(s)
- Yufan Chen
- Department of Anaesthesiology, Singapore General Hospital, Singapore,Department of Cardiothoracic Anesthesia, National Heart Centre, Singapore
| | - Priscilla Hui Yi Phoon
- Department of Anaesthesiology, Singapore General Hospital, Singapore,Department of Cardiothoracic Anesthesia, National Heart Centre, Singapore
| | - Nian Chih Hwang
- Department of Anaesthesiology, Singapore General Hospital, Singapore; Department of Cardiothoracic Anesthesia, National Heart Centre, Singapore.
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24
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Zhu M, Xu F, Miao S, Xie C, Li H, Li S, Xia F. Incorporation of a Multi-Valent Aptamer into Electrochemical Biosensors to Achieve an Improved Performance for Thrombin Analysis in Blood Serum. Chempluschem 2022; 87:e202200325. [PMID: 36410784 DOI: 10.1002/cplu.202200325] [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: 09/19/2022] [Revised: 10/10/2022] [Indexed: 11/23/2022]
Abstract
The electrochemical aptamer-based (E-AB) biosensor usually has a long reaction time when detecting thrombin. This work reports the design of an E-AB biosensor with dual recognition sites to quickly detect thrombin. Specifically, two specific recognition sites of thrombin were used to design three aptamer sequences (TBA-15, TBA-29 and TBA-U), followed by fabrication of corresponding sensors. First, we tested these three types of biosensors in tris buffer solution, and found that the response time of the TBA-U sensor to the same concentration of thrombin was about 2 hours, which is shorter than TBA-15 and TBA-29 sensors. Then, we also did the same test in 50 % diluted serum with 500 nM thrombin. The response time of the TBA-U sensor was about 2 hours, which is still faster than the 3 hours of TBA-15 sensor and the 5.5 hours for TBA-29 sensor. In addition, in terms of dynamic range and specificity, TBA-U has good performance.
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Affiliation(s)
- Man Zhu
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Fan Xu
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Siyuan Miao
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Chongyu Xie
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Hui Li
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Shaoguang Li
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Fan Xia
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
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25
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Dunker C, Imberg L, Siutkina AI, Erbacher C, Daniliuc CG, Karst U, Kalinin DV. Pyrazole-Based Thrombin Inhibitors with a Serine-Trapping Mechanism of Action: Synthesis and Biological Activity. Pharmaceuticals (Basel) 2022; 15:1340. [PMID: 36355511 PMCID: PMC9696832 DOI: 10.3390/ph15111340] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/24/2022] [Accepted: 10/25/2022] [Indexed: 07/25/2023] Open
Abstract
New antithrombotic drugs are needed to combat thrombosis, a dangerous pathology that causes myocardial infarction and ischemic stroke. In this respect, thrombin (FIIa) represents an important drug target. We herein report the synthesis and biological activity of a series of 1H-pyrazol-5-amine-based thrombin inhibitors with a serine-trapping mechanism of action. Among synthesized compounds, flexible acylated 1H-pyrazol-5-amines 24e, 34a, and 34b were identified as potent 16-80 nM thrombin inhibitors, which showed practically no off-targeting effect against other physiologically relevant serine proteases. To prove that synthesized compounds are covalent thrombin inhibitors, the most potent derivative 24e (FIIa IC50 = 16 nM) was studied in a mass-shift assay, where it has been shown that 24e transfers its acyl moiety (pivaloyl) to the catalytic Ser195 of thrombin. Performed herein docking studies also confirmed the covalent mechanism of thrombin inhibition by synthesized compounds. Acylated aminopyrazoles found during this study showed only limited effects on plasma coagulation in activated partial thrombin time (aPTT) and prothrombin time (PT) in vitro assays. However, such thrombin inhibitors are expected to have virtually no effect on bleeding time and can be used as a starting point for developing a safer alternative to traditional non-covalent anticoagulants.
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Affiliation(s)
- Calvin Dunker
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, 48149 Münster, Germany
| | - Lukas Imberg
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, 48149 Münster, Germany
| | - Alena I. Siutkina
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, 48149 Münster, Germany
| | - Catharina Erbacher
- Institute of Inorganic and Analytical Chemistry, University of Münster, 48149 Münster, Germany
| | | | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry, University of Münster, 48149 Münster, Germany
| | - Dmitrii V. Kalinin
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, 48149 Münster, Germany
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26
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Ye Q, Zhang Y, Yan D, Sun Y, Li M, Cao H, Wang S, Meng J. Integrating pharmacokinetics and network analysis to investigate the mechanism of Moutan Cortex in blood-heat and blood stasis syndrome. Chin Med 2022; 17:107. [PMID: 36104759 PMCID: PMC9476706 DOI: 10.1186/s13020-022-00657-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 08/19/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Raw Moutan Cortex (RMC) has been used in China and other Asian countries for thousands of years. Its medical application is the treatment of cooling blood and promoting blood circulation. However, its therapeutic mechanism is still undefined. METHODS In this study, the pharmacokinetics strategy that integrated network analysis was employed to explore the mechanism of RMC in blood-heat and blood stasis syndrome (BHS) model rats. Firstly, Ultra-High performance Liquid Chromatography coupled with Diode Array Detector (UHPLC-DAD) method was developed to determine nine absorbed compounds in rat serum in BHS and normal rats after oral administration of RMC extract respectively. Then the pharmacology network was established based on the relationship between nine compounds absorbed into the blood and BHS targets. Finally, the predicted hub targets were validated experimentally in human umbilical vein endothelial cells (HUVECs). RESULTS Pharmacokinetic study showed that the pharmacokinetic parameters of nine absorbed compounds had significant differences between BHS and normal groups (p < 0.05). Network analysis showed that 8 target genes, namely, F2, F10, F7, PLAU, MAPK14, MAPK10, AKT1, and NOS3 may be the primary targets regulated by RMC for the treatment of BHS. Among them, targets (F2, F10, F7 and MAPK14, MAPK10, AKT) and 4 active ingredients (paeonol, paeoniflorin, quercetin and oxypaeoniflorin) were selected for evaluating the reliability in vitro experiments, which revealed that the mechanism of RMC against BHS syndrome may inhibit inflammatory pathways and regulate coagulation cascades pathway for cooling and promoting blood circulation. CONCLUSION The proposed pharmacokinetics study integrated network analysis strategy provides a combination method to explore the therapeutic mechanism of RMC on BHS.
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Affiliation(s)
- Qiuli Ye
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University/Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica, State Administration of Traditional Chinese Medicine (TCM)/Engineering Technology Research Center for Chinese Materia Medica Quality of Universities in Guangdong Province, Guangzhou, 510006, China
| | - Ying Zhang
- College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Donghui Yan
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University/Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica, State Administration of Traditional Chinese Medicine (TCM)/Engineering Technology Research Center for Chinese Materia Medica Quality of Universities in Guangdong Province, Guangzhou, 510006, China
| | - Yue Sun
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University/Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica, State Administration of Traditional Chinese Medicine (TCM)/Engineering Technology Research Center for Chinese Materia Medica Quality of Universities in Guangdong Province, Guangzhou, 510006, China
| | - Ming Li
- Medical Research Center, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, China
| | - Hui Cao
- College of Pharmacy, Jinan University, Guangzhou, 510632, China.
| | - Shumei Wang
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University/Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica, State Administration of Traditional Chinese Medicine (TCM)/Engineering Technology Research Center for Chinese Materia Medica Quality of Universities in Guangdong Province, Guangzhou, 510006, China
| | - Jiang Meng
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University/Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica, State Administration of Traditional Chinese Medicine (TCM)/Engineering Technology Research Center for Chinese Materia Medica Quality of Universities in Guangdong Province, Guangzhou, 510006, China.
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27
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Yang X, Wang J, Gao Z, Zhang W, Zhu H, Song Y, Wang Q, Liu M, Jiang L, Huang Y, Xia F. An orthogonal dual-regulation strategy for sensitive biosensing applications. Natl Sci Rev 2022; 9:nwac048. [PMID: 36285294 PMCID: PMC9584063 DOI: 10.1093/nsr/nwac048] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 10/22/2021] [Accepted: 02/15/2022] [Indexed: 10/27/2023] Open
Abstract
Biosensing systems based on controllable motion behaviors of droplets have attracted extensive attention, but still face challenges of insufficient sensitivity and uncontrollable dynamic range due to imprecise manipulation of droplet motion on the surfaces. Here, we report an orthogonal dual-regulation strategy for precise motion control of droplets and we demonstrate its utility as a sensitive sensing system with controllable dynamic ranges of sensing for adenosine triphosphate, miRNA, thrombin and kanamycin, as well as discrimination of five kinds of DNA. We endowed a DNA-contained bio-droplet sliding on a lubricant-infused structural surface with micro-grooves to separately adjust the resistance from liquid phase and solid phase. The resistance from liquid phase mainly depended on hydrophobic interaction between DNA and lubricant, which can be finely tuned by different DNA's average chain length. Meanwhile, the resistance from solid surface was determined by the energy barrier from the periodic micro-grooves, which can be adjusted by varying the droplet's sliding direction on the surface. The hydrophobic interaction is conformed to be orthogonal to the micro-grooves' anisotropic resistance by three different methods. This orthogonal dual-regulation strategy thus demonstrated its ability to precisely control bio-droplets' motion behaviors and sensitive detection with adjustable dynamic ranges for various bio-targets. The dual-regulation strategy will provide significant insights for super-wettable biosensors, visual inspection and beyond.
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Affiliation(s)
- Xian Yang
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China
- State Grid Integrated Energy Service Group CO. LTD., Beijing 100052, China
| | - Jinhua Wang
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Zhongfeng Gao
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, College of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, China
| | - Weiqi Zhang
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Hai Zhu
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Yongjun Song
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Quan Wang
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Mingjie Liu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of the Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, China
| | - Lei Jiang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of the Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, China
| | - Yu Huang
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China
- Zhejiang Institute, China University of Geosciences, Hangzhou 311305, China
| | - Fan Xia
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China
- Zhejiang Institute, China University of Geosciences, Hangzhou 311305, China
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28
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Johnson C, Quach HQ, Lau C, Ekholt K, Espevik T, Woodruff TM, Pischke SE, Mollnes TE, Nilsson PH. Thrombin Differentially Modulates the Acute Inflammatory Response to Escherichia coli and Staphylococcus aureus in Human Whole Blood. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:2771-2778. [PMID: 35675954 DOI: 10.4049/jimmunol.2101033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 04/11/2022] [Indexed: 06/15/2023]
Abstract
Thrombin plays a central role in thromboinflammatory responses, but its activity is blocked in the common ex vivo human whole blood models, making an ex vivo study of thrombin effects on thromboinflammatory responses unfeasible. In this study, we exploited the anticoagulant peptide Gly-Pro-Arg-Pro (GPRP) that blocks fibrin polymerization to study the effects of thrombin on acute inflammation in response to Escherichia coli and Staphylococcus aureus Human blood was anticoagulated with either GPRP or the thrombin inhibitor lepirudin and incubated with either E. coli or S. aureus for up to 4 h at 37°C. In GPRP-anticoagulated blood, there were spontaneous elevations in thrombin levels and platelet activation, which further increased in the presence of bacteria. Complement activation and the expression of activation markers on monocytes and granulocytes increased to the same extent in both blood models in response to bacteria. Most cytokines were not elevated in response to thrombin alone, but thrombin presence substantially and heterogeneously modulated several cytokines that increased in response to bacterial incubations. Bacterial-induced releases of IL-8, MIP-1α, and MIP-1β were potentiated in the thrombin-active GPRP model, whereas the levels of IP-10, TNF, IL-6, and IL-1β were elevated in the thrombin-inactive lepirudin model. Complement C5-blockade, combined with CD14 inhibition, reduced the overall cytokine release significantly, both in thrombin-active and thrombin-inactive models. Our data support that thrombin itself marginally induces leukocyte-dependent cytokine release in this isolated human whole blood but is a significant modulator of bacteria-induced inflammation by a differential effect on cytokine patterns.
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Affiliation(s)
- Christina Johnson
- Department of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Huy Quang Quach
- Department of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Corinna Lau
- Research Laboratory, Nordland Hospital, Bodø, Norway
| | - Karin Ekholt
- Department of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Terje Espevik
- Centre of Molecular Inflammation Research, Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Trent M Woodruff
- School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Søren Erik Pischke
- Department of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway
- Clinic for Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
| | - Tom Eirik Mollnes
- Department of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway
- Research Laboratory, Nordland Hospital, Bodø, Norway
- Centre of Molecular Inflammation Research, Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- K.G. Jebsen Thrombosis Research and Expertise Center, University of Tromsø, Tromsø, Norway; and
| | - Per H Nilsson
- Department of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway;
- Department of Chemistry and Biomedicine, Linnaeus Centre for Biomaterials Chemistry Linnaeus University, Kalmar, Sweden
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29
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Bernardo Á, Caro A, Martínez-Carballeira D, Corte JR, Vázquez S, Palomo-Antequera C, Andreu A, Fernández-Pardo Á, Oto J, Gutiérrez L, Soto I, Medina P. Applicability of the Thrombin Generation Test to Evaluate the Hemostatic Status of Hemophilia A Patients in Daily Clinical Practice. J Clin Med 2022; 11:jcm11123345. [PMID: 35743412 PMCID: PMC9224793 DOI: 10.3390/jcm11123345] [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: 05/13/2022] [Revised: 05/25/2022] [Accepted: 06/07/2022] [Indexed: 02/01/2023] Open
Abstract
Hemophilia A (HA) is a rare bleeding disorder caused by factor VIII (FVIII) deficiency due to various genetic mutations in the F8 gene. The disease severity inversely correlates with the plasma levels of functional FVIII. The treatment of HA patients is based on FVIII replacement therapy, either following a prophylactic or on-demand regime, depending on the severity of the disease at diagnosis and the patient’s clinical manifestations. The hemorrhagic manifestations are widely variable amongst HA patients, who may require monitoring and treatment re-adjustment to minimize bleeding symptoms. Notably, laboratory monitoring of the FVIII activity is difficult due to a lack of sensitivity to various FVIII-related molecules, including non-factor replacement therapies. Hence, patient management is determined mainly based on clinical manifestations and patient–clinician history. Our goal was to validate the ST Genesia® automated thrombin generation analyzer to quantify the relative hemostatic status in HA patients. We recruited a cohort of HA patients from the Principality of Asturias (Spain), following treatment and at a stable non-bleeding phase. The entire cohort (57 patients) had been comprehensively studied at diagnosis, including FVIII and VWF activity assays and F8 genetic screening, and then clinically monitored until the Thrombin Generation Test (TGT) was performed. All patients were recruited prior to treatment administration, at the maximum time-window following the previous dose. Interestingly, the severe/moderate patients had a similar TGT compared to the mild patients, reflecting the non-bleeding phase of our patient cohort, regardless of the initial diagnosis (i.e., the severity of the disease), treatment regime, and FVIII activity measured at the time of the TGT. Thus, TGT parameters, especially the peak height (Peak), may reflect the actual hemostatic status of a patient more accurately compared to FVIII activity assays, which may be compromised by non-factor replacement therapies. Furthermore, our data supports the utilization of combined TGT variables, together with the severity of patient symptoms, along with the F8 mutation type to augment the prognostic capacity of TGT. The results from this observational study suggest that TGT parameters measured with ST Genesia® may represent a suitable tool to monitor the hemostatic status of patients requiring a closer follow-up and a tailored therapeutic adjustment, including other hemophilia subtypes or bleeding disorders.
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Affiliation(s)
- Ángel Bernardo
- Department of Hematology, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain; (A.C.); (D.M.-C.); (J.R.C.); (S.V.); (I.S.)
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
- Correspondence:
| | - Alberto Caro
- Department of Hematology, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain; (A.C.); (D.M.-C.); (J.R.C.); (S.V.); (I.S.)
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
| | - Daniel Martínez-Carballeira
- Department of Hematology, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain; (A.C.); (D.M.-C.); (J.R.C.); (S.V.); (I.S.)
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
| | - José Ramón Corte
- Department of Hematology, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain; (A.C.); (D.M.-C.); (J.R.C.); (S.V.); (I.S.)
| | - Sonia Vázquez
- Department of Hematology, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain; (A.C.); (D.M.-C.); (J.R.C.); (S.V.); (I.S.)
| | - Carmen Palomo-Antequera
- Department of Internal Medicine, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain;
- Bone Metabolism, Vascular Metabolism and Chronic Inflammatory Diseases Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Alfredo Andreu
- Department of Pharmacology, University of Navarra, 31008 Pamplona, Spain;
| | - Álvaro Fernández-Pardo
- Hemostasis, Thrombosis, Arteriosclerosis and Vascular Biology Research Group, Medical Research Institute Hospital La Fe (IIS La Fe), 46026 Valencia, Spain; (Á.F.-P.); (J.O.); (P.M.)
| | - Julia Oto
- Hemostasis, Thrombosis, Arteriosclerosis and Vascular Biology Research Group, Medical Research Institute Hospital La Fe (IIS La Fe), 46026 Valencia, Spain; (Á.F.-P.); (J.O.); (P.M.)
| | - Laura Gutiérrez
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
- Department of Medicine, University of Oviedo, 33006 Oviedo, Spain
| | - Inmaculada Soto
- Department of Hematology, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain; (A.C.); (D.M.-C.); (J.R.C.); (S.V.); (I.S.)
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
| | - Pilar Medina
- Hemostasis, Thrombosis, Arteriosclerosis and Vascular Biology Research Group, Medical Research Institute Hospital La Fe (IIS La Fe), 46026 Valencia, Spain; (Á.F.-P.); (J.O.); (P.M.)
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30
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Glassy-like Metal Oxide Particles Embedded on Micrometer Thicker Alginate Films as Promising Wound Healing Nanomaterials. Int J Mol Sci 2022; 23:ijms23105585. [PMID: 35628396 PMCID: PMC9142123 DOI: 10.3390/ijms23105585] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/11/2022] [Accepted: 05/14/2022] [Indexed: 11/29/2022] Open
Abstract
Micrometer-thicker, biologically responsive nanocomposite films were prepared starting from alginate-metal alkoxide colloidal solution followed by sol-gel chemistry and solvent removal through evaporation-induced assembly. The disclosed approach is straightforward and highly versatile, allowing the entrapment and growth of a set of glassy-like metal oxide within the network of alginate and their shaping as crake-free transparent and flexible films. Immersing these films in aqueous medium triggers alginate solubilization, and affords water-soluble metal oxides wrapped in a biocompatible carbohydrate framework. Biological activity of the nano-composites films was also studied including their hemolytic activity, methemoglobin, prothrombin, and thrombine time. The effect of the films on fibroblasts and keratinocytes of human skin was also investigated with a special emphasis on the role played by the incorporated metal oxide. This comparative study sheds light on the crucial biological response of the ceramic phase embedded inside of the films, with titanium dioxide being the most promising for wound healing purposes.
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31
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Yousef H, Liu Y, Zheng L. Nanomaterial-Based Label-Free Electrochemical Aptasensors for the Detection of Thrombin. BIOSENSORS 2022; 12:bios12040253. [PMID: 35448312 PMCID: PMC9025199 DOI: 10.3390/bios12040253] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/08/2022] [Accepted: 04/14/2022] [Indexed: 05/06/2023]
Abstract
Thrombin plays a central role in hemostasis and its imbalances in coagulation can lead to various pathologies. It is of clinical significance to develop a fast and accurate method for the quantitative detection of thrombin. Electrochemical aptasensors have the capability of combining the specific selectivity from aptamers with the extraordinary sensitivity from electrochemical techniques and thus have attracted considerable attention for the trace-level detection of thrombin. Nanomaterials and nanostructures can further enhance the performance of thrombin aptasensors to achieve high sensitivity, selectivity, and antifouling functions. In highlighting these material merits and their impacts on sensor performance, this paper reviews the most recent advances in label-free electrochemical aptasensors for thrombin detection, with an emphasis on nanomaterials and nanostructures utilized in sensor design and fabrication. The performance, advantages, and limitations of those aptasensors are summarized and compared according to their material structures and compositions.
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Affiliation(s)
- Hibba Yousef
- Department of Biomedical Engineering, Khalifa University, Abu Dhabi 127788, United Arab Emirates;
| | - Yang Liu
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia;
| | - Lianxi Zheng
- Department of Mechanical Engineering, Khalifa University, Abu Dhabi 127788, United Arab Emirates
- Correspondence:
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El-Sayed DS, Elbadawy HA, Khalil TE. Rational modulation of N and O binding in Fe(III) complex formation derived from hydroxychloroquine: Synthesis, spectroscopic, computational, and docking simulation with human thrombin plasma. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Bedding MJ, Kulkarni SS, Payne RJ. Diselenide-selenoester ligation in the chemical synthesis of proteins. Methods Enzymol 2022; 662:363-399. [PMID: 35101218 DOI: 10.1016/bs.mie.2021.10.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Peptides and proteins represent an important class of biomolecules responsible for a plethora of structural and functional roles in vivo. Following their translation on the ribosome, the majority of eukaryotic proteins are post-translationally modified, leading to a proteome that is much larger than the number of genes present in a given organism. In order to understand the functional role of a given protein modification, it is necessary to access peptides and proteins bearing homogeneous and site-specific modifications. Accordingly, there has been significant research effort centered on the development of peptide ligation methodologies for the chemical synthesis of modified proteins. In this chapter we outline the discovery and development of a contemporary methodology called the diselenide-selenoester ligation (DSL) that enables the rapid and efficient fusion of peptide fragments to generate synthetic proteins. The practical aspects of using DSL for the preparation of chemically modified peptides and proteins in the laboratory is described. In addition, recent advances in the application of the methodology are outlined, exemplified by the synthesis and biological evaluation of a number of complex protein targets.
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Affiliation(s)
- Max J Bedding
- School of Chemistry, The University of Sydney, Camperdown, NSW, Australia; Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Sydney, Camperdown, NSW, Australia
| | - Sameer S Kulkarni
- School of Chemistry, The University of Sydney, Camperdown, NSW, Australia; Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Sydney, Camperdown, NSW, Australia
| | - Richard J Payne
- School of Chemistry, The University of Sydney, Camperdown, NSW, Australia; Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Sydney, Camperdown, NSW, Australia.
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Thrombin Generation in Trauma Patients: How Do we Navigate Through Scylla and Charybdis? CURRENT ANESTHESIOLOGY REPORTS 2022. [DOI: 10.1007/s40140-021-00502-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Afosah DK, Ofori E, Mottamal M, Al-Horani RA. Factor IX(a) inhibitors: an updated patent review (2003-present). Expert Opin Ther Pat 2022; 32:381-400. [PMID: 34991418 DOI: 10.1080/13543776.2022.2026926] [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] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Anticoagulation with no bleeding complications is the current objective of drug discovery programs in the area of treating and/or preventing thromboembolism. Despite the promises of therapeutics targeting factors XI(a) and XII(a), none has been approved thus far. Clinically used thrombin- and/or factor Xa-based anticoagulants continue to be associated with a significant bleeding risk which limits their safe use in a broad range of thrombotic patients. Research findings in animals and humans indicate that it is possible to target factor IX(a) (FIX(a)) to achieve anticoagulation with a limited risk of bleeding. AREAS COVERED A review of patents literature has retrieved >35 patents on the development of molecules targeting FIX(a) since 2003. Small molecules, antibodies, and aptamers have been developed to target FIX(a) to potentially promote effective and safer anticoagulation. Most of these agents are in the pre-clinical development phase and few have been tested in clinical trials. EXPERT OPINION FIX(a) system is being considered to develop new anticoagulants with fewer bleeding complications. Our survey indicates that the number of FIX(a)-targeting agents is mediocre. The agents under development are diverse. Although additional development is essential, moving one or more of these agents to the clinic will facilitate achieving better clinical outcomes.
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Affiliation(s)
- Daniel K Afosah
- Department of Chemistry and Biochemistry, Washington and Lee University, Lexington, VA, USA
| | - Edward Ofori
- Department of Pharmaceutical Sciences, College of Pharmacy, Chicago State University, Chicago, IL, USA
| | - Madhusoodanan Mottamal
- Department of Chemistry, College of Arts and Sciences, Xavier University of Louisiana, New Orleans, LA, USA
| | - Rami A Al-Horani
- Division of Basic Pharmaceutical Sciences, College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana, USA
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Mollnes TE, Storm BS, Brekke OL, Nilsson PH, Lambris JD. Application of the C3 inhibitor compstatin in a human whole blood model designed for complement research - 20 years of experience and future perspectives. Semin Immunol 2022; 59:101604. [PMID: 35570131 DOI: 10.1016/j.smim.2022.101604] [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: 03/27/2022] [Accepted: 04/23/2022] [Indexed: 01/15/2023]
Abstract
The complex molecular and cellular biological systems that maintain host homeostasis undergo continuous crosstalk. Complement, a component of innate immunity, is one such system. Initially regarded as a system to protect the host from infection, complement has more recently been shown to have numerous other functions, including involvement in embryonic development, tissue modeling, and repair. Furthermore, the complement system plays a major role in the pathophysiology of many diseases. Through interactions with other plasma cascades, including hemostasis, complement activation leads to the broad host-protective response known as thromboinflammation. Most complement research has been limited to reductionistic models of purified components and cells and their interactions in vitro. However, to study the pathophysiology of complement-driven diseases, including the interaction between the complement system and other inflammatory systems, holistic models demonstrating only minimal interference with complement activity are needed. Here we describe two such models; whole blood anticoagulated with either the thrombin inhibitor lepirudin or the fibrin polymerization peptide blocker GPRP, both of which retain complement activity and preserve the ability of complement to be mutually reactive with other inflammatory systems. For instance, to examine the relative roles of C3 and C5 in complement activation, it is possible to compare the effects of the C3 inhibitor compstatin effects to those of inhibitors of C5 and C5aR1. We also discuss how complement is activated by both pathogen-associated molecular patterns, inducing infectious inflammation caused by organisms such as Gram-negative and Gram-positive bacteria, and by sterile damage-associated molecular patterns, including cholesterol crystals and artificial materials used in clinical medicine. When C3 is inhibited, it is important to determine the mechanism by which inflammation is attenuated, i.e., whether the attenuation derives directly from C3 activation products or via downstream activation of C5, since the mechanism involved may determine the appropriate choice of inhibitor under various conditions. With some exceptions, most inflammatory responses are dependent on C5 and C5aR1; one exception is venous air embolism, in which air bubbles enter the blood circulation and trigger a mainly C3-dependent thromboembolism, with the formation of an active C3 convertase, without a corresponding C5 activation. Under such conditions, an inhibitor of C3 is needed to attenuate the inflammation. Our holistic blood models will be useful for further studies of the inhibition of any complement target, not just C3 or C5. The focus here will be on targeting the critical complement component, activation product, or receptor that is important for the pathophysiology in a variety of disease conditions.
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Affiliation(s)
- Tom E Mollnes
- Research Laboratory, Nordland Hospital, Bodø, Norway; Department of Immunology, Oslo University Hospital and University of Oslo, Norway; Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, Trondheim, Norway.
| | - Benjamin S Storm
- Research Laboratory, Nordland Hospital, Bodø, Norway; Institute of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway; Faculty of Nursing and Health Sciences, Nord University, Bodø, Norway
| | - Ole L Brekke
- Research Laboratory, Nordland Hospital, Bodø, Norway; Institute of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway; Department of Laboratory Medicine, Nordland Hospital, Bodø, Norway
| | - Per H Nilsson
- Department of Immunology, Oslo University Hospital and University of Oslo, Norway; Linnaeus Centre for Biomaterials Chemistry, Linnaeus University, 39182 Kalmar, Sweden; Department of Chemistry and Biomedical Sciences, Linnaeus University, 39182 Kalmar, Sweden
| | - John D Lambris
- Department of Pathology & Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
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rDromaserpin: A Novel Anti-Hemostatic Serpin, from the Salivary Glands of the Hard Tick Hyalomma dromedarii. Toxins (Basel) 2021; 13:toxins13120913. [PMID: 34941750 PMCID: PMC8703697 DOI: 10.3390/toxins13120913] [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: 10/28/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 01/17/2023] Open
Abstract
Hemostatic disorders are caused either by platelet-related dysfunctions, defective blood coagulation, or by a combination of both, leading to an increased susceptibility to cardiovascular diseases (CVD) and other related illnesses. The unique specificity of anticoagulants from hematophagous arthropods, such as ticks, suggests that tick saliva holds great promise for discovering new treatments for these life-threatening diseases. In this study, we combined in silico and in vitro analyses to characterize the first recombinant serpin, herein called Dromaserpin, from the sialotranscriptome of the Hyalomma dromedarii tick. Our in silico data described Dromaserpin as a secreted protein of ~43 kDa with high similarities to previously characterized inhibitory serpins. The recombinant protein (rDromaserpin) was obtained as a well-structured monomer, which was tested using global blood coagulation and platelet aggregation assays. With this approach, we confirmed rDromaserpin anticoagulant activity as it significantly delayed plasma clotting in activated partial thromboplastin time and thrombin time assays. The profiling of proteolytic activity shows its capacity to inhibit thrombin in the micromolar range (0.2 to 1 μM) and in the presence of heparin this inhibition was clearly increased. It was also able to inhibit Kallikrein, FXIa and slightly FXIIa, with no significant effect on other factors. In addition, the rDromaserpin inhibited thrombin-induced platelet aggregation. Taken together, our data suggest that rDromaserpin deserves to be further investigated as a potential candidate for developing therapeutic compounds targeting disorders related to blood clotting and/or platelet aggregation.
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A Comprehensive Analysis of the Thrombin Binding Aptamer Containing Functionalized Pyrrolo-2'-deoxycytidines. Pharmaceuticals (Basel) 2021; 14:ph14121326. [PMID: 34959726 PMCID: PMC8709445 DOI: 10.3390/ph14121326] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/15/2021] [Accepted: 12/16/2021] [Indexed: 01/07/2023] Open
Abstract
Aptamers constitute an answer for the growing need for targeted therapy development. One of the most well-known representatives of this group of compounds is thrombin binding aptamers (TBA) targeted towards thrombin. The TBA inhibitory activity is determined by its spatial arrangement, which consists of two G-tetrads linked by two shorter TT loops and one longer TGT loop and folds into a unimolecular, antiparallel G-quadruplex structure. Interesting properties of the aptamer can be further improved via the introduction of a number of chemical modifications. Herein, a comprehensive analysis of the influence of pyrrolo-2’-deoxycytidine (Py-dC) and its derivatives on TBA physicochemical and biological properties has been presented. The studies have shown that the presence of modified residues at the T7 position of the TGT loop has only minor effects on TBA thermodynamic stability without affecting its folding topology. All analyzed oligomers exhibit anticoagulant properties, but only aptamer modified with a decyl derivative of Py-dC was able to inhibit thrombin activity more efficiently than unmodified, parental compounds. Importantly, the same compound also possessed the potential to effectively restrain HeLa cell line growth.
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Physical Exercise as a Modulator of Vascular Pathology and Thrombin Generation to Improve Outcomes After Traumatic Brain Injury. Mol Neurobiol 2021; 59:1124-1138. [PMID: 34846694 DOI: 10.1007/s12035-021-02639-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 11/04/2021] [Indexed: 10/19/2022]
Abstract
Disruption of the blood-brain barrier and occurrence of coagulopathy after traumatic brain injury (TBI) have important implications for multiple secondary injury processes. Given the extent of post-traumatic changes in neuronal function, significant alterations in some targets, such thrombin (a protease that plays a physiological role in maintaining blood coagulation), play an important role in TBI-induced pathophysiology. Despite the magnitude of thrombin in synaptic plasticity being concentration-dependent, the mechanisms underlying TBI have not been fully elucidated. The understanding of this post-injury neurovascular dysregulation is essential to establish scientific-based rehabilitative strategies. One of these strategies may be supporting physical exercise, considering its relevance in reducing damage after a TBI. However, there are caveats to consider when interpreting the effect of physical exercise on neurovascular dysregulation after TBI. To complete this picture, this review will describe how the interactions established between blood-borne factors (such as thrombin) and physical exercise alter the TBI pathophysiology.
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Zia A, Wu Y, Nguyen T, Wang X, Peter K, Ta HT. The choice of targets and ligands for site-specific delivery of nanomedicine to atherosclerosis. Cardiovasc Res 2021; 116:2055-2068. [PMID: 32077918 DOI: 10.1093/cvr/cvaa047] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/23/2019] [Accepted: 02/17/2020] [Indexed: 12/22/2022] Open
Abstract
As nanotechnologies advance into clinical medicine, novel methods for applying nanomedicine to cardiovascular diseases are emerging. Extensive research has been undertaken to unlock the complex pathogenesis of atherosclerosis. However, this complexity presents challenges to develop effective imaging and therapeutic modalities for early diagnosis and acute intervention. The choice of ligand-receptor system vastly influences the effectiveness of nanomedicine. This review collates current ligand-receptor systems used in targeting functionalized nanoparticles for diagnosis and treatment of atherosclerosis. Our focus is on the binding affinity and selectivity of ligand-receptor systems, as well as the relative abundance of targets throughout the development and progression of atherosclerosis. Antibody-based targeting systems are currently the most commonly researched due to their high binding affinities when compared with other ligands, such as antibody fragments, peptides, and other small molecules. However, antibodies tend to be immunogenic due to their size. Engineering antibody fragments can address this issue but will compromise their binding affinity. Peptides are promising ligands due to their synthetic flexibility and low production costs. Alongside the aforementioned binding affinity of ligands, the choice of target and its abundance throughout distinct stages of atherosclerosis and thrombosis is relevant to the intended purpose of the nanomedicine. Further studies to investigate the components of atherosclerotic plaques are required as their cellular and molecular profile shifts over time.
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Affiliation(s)
- Adil Zia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Yuao Wu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.,School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, QLD 4102, Australia
| | - Tuan Nguyen
- School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Xiaowei Wang
- Baker Heart and Diabetes Institute, Melbourne, VIC 3000, Australia
| | - Karlheinz Peter
- Baker Heart and Diabetes Institute, Melbourne, VIC 3000, Australia
| | - Hang T Ta
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.,School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, QLD 4102, Australia
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Abstract
Burn-induced coagulopathy is not well understood, and consensus on diagnosis, prevention, and treatments are lacking. In this review, literature on burn-induced (and associated) coagulopathy is presented along with the current understanding of the effects of burn injury on the interactions among coagulation, fibrinolysis, and inflammation in the acute resuscitative phase and reconstructive phase of care. The role of conventional tests of coagulopathy and functional assays like thromboelastography or thromboelastometry will also be discussed. Finally, reported methods for the prevention and treatment of complications related to burn-induced coagulopathy will be reviewed.
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Mendes LG, Ferreira FV, Sielski MS, Livi S, Rocco SA, Sforça ML, Burga-Sánchez J, Vicente CP, Mei LHI. Electrospun Nanofibrous Architectures of Thrombin-Loaded Poly(ethylene oxide) for Faster in Vivo Wound Clotting. ACS APPLIED BIO MATERIALS 2021; 4:5240-5250. [DOI: 10.1021/acsabm.1c00402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Larissa G. Mendes
- School of Chemical Engineering, University of Campinas (UNICAMP), Campinas 13083-852, São Paulo, Brazil
| | - Filipe V. Ferreira
- School of Chemical Engineering, University of Campinas (UNICAMP), Campinas 13083-852, São Paulo, Brazil
| | - Micheli S. Sielski
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas 13083-862, São Paulo, Brazil
| | - Sebastien Livi
- Université de Lyon, Ingénierie des Matériaux Polymères CNRS, UMR 5223, INSA Lyon, Villeurbanne F-69621, France
| | - Silvana A. Rocco
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas 13083-100, São Paulo, Brazil
| | - Maurício L. Sforça
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas 13083-100, São Paulo, Brazil
| | - Jonny Burga-Sánchez
- Physiological Science Department, Piracicaba Dental School, University of Campinas, Campinas 13414-903, São Paulo, Brazil
| | - Cristina P. Vicente
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas 13083-862, São Paulo, Brazil
| | - Lucia H. I. Mei
- School of Chemical Engineering, University of Campinas (UNICAMP), Campinas 13083-852, São Paulo, Brazil
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Which tests can most effectively indicate the clinical phenotype of paediatric haemophilia patients with prophylaxis? Blood Coagul Fibrinolysis 2021; 32:259-265. [PMID: 33955860 DOI: 10.1097/mbc.0000000000001028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Patients with haemophilia A who have similar FVIII levels show clinical heterogeneity, and 10-15% of patients with severe haemophilia do not have a severe bleeding phenotype. The aim of this study was to assess whether global haemostasis tests, such as thrombin generation assay (TGA) and thromboelastography (TEG), can predict the bleeding pattern of severe haemophilia better than trough levels and pharmacokinetic profiles, particularly in the prophylactic setting. The study group consisted of 39 patients with haemophilia A and 75 healthy controls. The annual bleeding rate (ABR) and Hemophilia Joint Health Score 2.1 (HJHS) of the patients were determined. Basal factor FVIII, inhibitor levels, TEG and TGA of participants with prophylaxis were performed after a washout period. Then, a recombinant FVIII product was administered to patients. After factor replacement, the above tests were repeated at 30 min, 6 and 48 h. There was a significant difference in the ABR and HJHS between the groups according to the basal factor VIII activity of patients after wash-out. TEG and TGA parameters of patients with factor activity above 1% were significantly better than those of patients with factor activity below 1%. After factor concentrate administration, factor activities, TEG and TGA parameters at 30 min, 6 and 48 h were similar in the two groups. We showed that the 1% trough level but not for the 3% trough level is critical for both clinical phenotypes and thrombin generation for haemophilia patients in the prophylactic setting.
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2D titanium carbide nanosheets based fluorescent aptasensor for sensitive detection of thrombin. Talanta 2021; 228:122219. [PMID: 33773725 DOI: 10.1016/j.talanta.2021.122219] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/02/2021] [Accepted: 02/13/2021] [Indexed: 01/06/2023]
Abstract
The emerging two-dimensional titanium carbides (MXenes) have a large potential in biomedical sensing owing to their excellent electrical and optical properties. Herein, a fluorescence resonance energy transfer (FRET) aptasensor with high sensitivity and specificity was constructed with single layer Ti3C2 MXene for quantitative detection of thrombin. The dye labelled thrombin-binding aptamer (TBA) was deposited on the surface of Ti3C2, and the fluorescence of which was efficiently quenched owing to the FRET between the dye and Ti3C2. The fact that thrombin forms quadruplex with TBA on Ti3C2 surface is due to the high electronic affinity between thrombin and Ti3C2. This process will cause the subsequent detachment of dye from the surface of Ti3C2, resulting in the recovery of fluorescence. Because of the special structure and high fluorescence quenching efficiency of Ti3C2 MXene, the aptasensor shows a high sensitivity with a low detection limit for thrombin at 5.27 pM. Three different aptamers were compared, and the aptamer HD22 is most sensitive for detection of thrombin originated from its great specificity in the human plasma. Importantly, this Ti3C2 MXene-based FRET aptasensor can detect thrombin in human serum accurately. These results suggest that the Ti3C2 MXene-based FRET aptasensor hold a great prospect in clinical diagnosis in the real-world applications.
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Moore EE, Moore HB, Kornblith LZ, Neal MD, Hoffman M, Mutch NJ, Schöchl H, Hunt BJ, Sauaia A. Trauma-induced coagulopathy. Nat Rev Dis Primers 2021; 7:30. [PMID: 33927200 PMCID: PMC9107773 DOI: 10.1038/s41572-021-00264-3] [Citation(s) in RCA: 298] [Impact Index Per Article: 99.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/19/2021] [Indexed: 12/12/2022]
Abstract
Uncontrolled haemorrhage is a major preventable cause of death in patients with traumatic injury. Trauma-induced coagulopathy (TIC) describes abnormal coagulation processes that are attributable to trauma. In the early hours of TIC development, hypocoagulability is typically present, resulting in bleeding, whereas later TIC is characterized by a hypercoagulable state associated with venous thromboembolism and multiple organ failure. Several pathophysiological mechanisms underlie TIC; tissue injury and shock synergistically provoke endothelial, immune system, platelet and clotting activation, which are accentuated by the 'lethal triad' (coagulopathy, hypothermia and acidosis). Traumatic brain injury also has a distinct role in TIC. Haemostatic abnormalities include fibrinogen depletion, inadequate thrombin generation, impaired platelet function and dysregulated fibrinolysis. Laboratory diagnosis is based on coagulation abnormalities detected by conventional or viscoelastic haemostatic assays; however, it does not always match the clinical condition. Management priorities are stopping blood loss and reversing shock by restoring circulating blood volume, to prevent or reduce the risk of worsening TIC. Various blood products can be used in resuscitation; however, there is no international agreement on the optimal composition of transfusion components. Tranexamic acid is used in pre-hospital settings selectively in the USA and more widely in Europe and other locations. Survivors of TIC experience high rates of morbidity, which affects short-term and long-term quality of life and functional outcome.
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Affiliation(s)
- Ernest E Moore
- Ernest E Moore Shock Trauma Center at Denver Health, Denver, CO, USA.
- Department of Surgery, University of Colorado Denver, Aurora, CO, USA.
| | - Hunter B Moore
- Department of Surgery, University of Colorado Denver, Aurora, CO, USA
| | - Lucy Z Kornblith
- Trauma and Surgical Critical Care, Zuckerberg San Francisco General Hospital, University of California San Francisco, San Francisco, CA, USA
| | - Matthew D Neal
- Pittsburgh Trauma Research Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Maureane Hoffman
- Duke University School of Medicine, Transfusion Service, Durham VA Medical Center, Durham, NC, USA
| | - Nicola J Mutch
- Aberdeen Cardiovascular & Diabetes Centre, School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Herbert Schöchl
- Department of Anesthesiology and Intensive Care Medicine, AUVA Trauma Centre Salzburg, Academic Teaching Hospital of the Paracelsus Medical University, Salzburg and Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Trauma Research Centre, Vienna, Austria
| | | | - Angela Sauaia
- Department of Surgery, University of Colorado Denver, Aurora, CO, USA
- Colorado School of Public Health, University of Colorado Denver, Aurora, CO, USA
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Shlobin NA, Har-Even M, Itsekson-Hayosh Z, Harnof S, Pick CG. Role of Thrombin in Central Nervous System Injury and Disease. Biomolecules 2021; 11:562. [PMID: 33921354 PMCID: PMC8070021 DOI: 10.3390/biom11040562] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/04/2021] [Accepted: 04/07/2021] [Indexed: 12/16/2022] Open
Abstract
Thrombin is a Na+-activated allosteric serine protease of the chymotrypsin family involved in coagulation, inflammation, cell protection, and apoptosis. Increasingly, the role of thrombin in the brain has been explored. Low concentrations of thrombin are neuroprotective, while high concentrations exert pathological effects. However, greater attention regarding the involvement of thrombin in normal and pathological processes in the central nervous system is warranted. In this review, we explore the mechanisms of thrombin action, localization, and functions in the central nervous system and describe the involvement of thrombin in stroke and intracerebral hemorrhage, neurodegenerative diseases, epilepsy, traumatic brain injury, and primary central nervous system tumors. We aim to comprehensively characterize the role of thrombin in neurological disease and injury.
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Affiliation(s)
- Nathan A. Shlobin
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Meirav Har-Even
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
- Sylvan Adams Sports Institute, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Ze’ev Itsekson-Hayosh
- Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel;
- Department of Neurology and Joseph Sagol Neuroscience Center, The Chaim Sheba Medical Center, Tel HaShomer 5262000, Israel
| | - Sagi Harnof
- Department of Neurosurgery, Beilinson Hospital, Rabin Medical Center, Tel Aviv University, Petah Tikva 4941492, Israel;
| | - Chaim G. Pick
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
- Sylvan Adams Sports Institute, Tel Aviv University, Tel Aviv 6997801, Israel
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
- Center for Biology of Addictive Diseases, Tel Aviv University, Tel Aviv 6997801, Israel
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Venous thromboembolism is caused by prothrombin p.Arg541Trp mutation in Japanese individuals. Hum Genome Var 2021; 8:13. [PMID: 33790279 PMCID: PMC8012570 DOI: 10.1038/s41439-021-00145-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/08/2021] [Accepted: 03/08/2021] [Indexed: 12/26/2022] Open
Abstract
Venous thromboembolism (VTE) is a multifactorial disease. Because low-frequency variants and rare mutations have been found to predispose carriers toward VTE, there is a need for variant discovery in clinical settings. Therefore, we used a whole-exome approach for a young VTE patient with a positive family history. We identified in the proband and his affected mother a rare, functional missense variant of prothrombin, p.Arg541Trp, which contributes to the clinical picture of VTE.
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Derkacz A, Olczyk P, Olczyk K, Komosinska-Vassev K. The Role of Extracellular Matrix Components in Inflammatory Bowel Diseases. J Clin Med 2021; 10:jcm10051122. [PMID: 33800267 PMCID: PMC7962650 DOI: 10.3390/jcm10051122] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/01/2021] [Accepted: 03/02/2021] [Indexed: 02/07/2023] Open
Abstract
The remodeling of extracellular matrix (ECM) within the intestine tissues, which simultaneously involves an increased degradation of ECM components and excessive intestinal fibrosis, is a defining trait of the progression of inflammatory bowel diseases (IBDs), which include ulcerative colitis (UC) and Crohn's disease (CD). The increased activity of proteases, especially matrix metalloproteinases (MMPs), leads to excessive degradation of the extracellular matrix and the release of protein and glycoprotein fragments, previously joined with the extracellular matrix, into the circulation. MMPs participate in regulating the functions of the epithelial barrier, the immunological response, and the process of wound healing or intestinal fibrosis. At a later stage of fibrosis during IBD, excessive formation and deposition of the matrix is observed. To assess changes in the extracellular matrix, quantitative measurement of the concentration in the blood of markers dependent on the activity of proteases, involved in the breakdown of extracellular matrix proteins as well as markers indicating the formation of a new ECM, has recently been proposed. This paper describes attempts to use the quantification of ECM components as markers to predict intestinal fibrosis and evaluate the healing process of the gut. The markers which reflect increased ECM degradation, together with the ones which show the process of creating a new matrix during IBD, allow the attainment of important information regarding the changes in the intestinal tissue, epithelial integrity and extracellular matrix remodeling. This paper contains evidence confirming that ECM remodeling is an integral part of directional cell signaling in the progression of IBD, and not only a basis for the ongoing processes.
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Affiliation(s)
- Alicja Derkacz
- Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, 41-200 Sosnowiec, Poland; (A.D.); (K.O.)
| | - Paweł Olczyk
- Department of Community Pharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, 41-200 Sosnowiec, Poland;
| | - Krystyna Olczyk
- Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, 41-200 Sosnowiec, Poland; (A.D.); (K.O.)
| | - Katarzyna Komosinska-Vassev
- Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, 41-200 Sosnowiec, Poland; (A.D.); (K.O.)
- Correspondence: ; Tel.: +48-32364-1150
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Abstract
Thrombin plays an important role in the process of hemostasis and blood coagulation. Studies in thrombin can help us find ways to treat cancer because thrombin is able to reduce the characteristic hypercoagulability of cancer. Thrombin is composed of two chains, the light chain and the heavy chain. The function of the heavy chain has been largely explored, while the function of the light chain was obscured until several disease-associated mutations in the light chain come to light. In this study, we want to explore the dynamic and conformation effects of mutations on the light chain further to determine possible associations between mutation, conformational changes, and disease. The study, which is a follow-up for our studies on apo thrombin and the mutant, ΔK9, mainly focuses on the mutants E8K and R4A. E8K is a disease-associated mutation, and R4A is used to study the role of Arg4, which is suggested experimentally to play a critical role for thrombin's catalytic activities. We performed five all-atom one microsecond-scale molecular dynamics (MD) simulations for both E8K and R4A, and quantified the changes in the conformational ensemble of the mutants. From the root-mean-square fluctuations (RMSF) for the α-carbons, we find that the atomic fluctuations change in the mutants in the 60s loop and γ loop. The correlation coefficients for the α-carbons indicate that the correlation relation for atom-pairs in the protein is also impacted. The clustering analysis and the principal component analysis (PCA) consistently tell us that the catalytic pocket and the regulatory loops are destabilized by the mutations. We also find that there are two binding modes for Na+ by clustering the vector difference between the Na+ ions and the 220s loop. After further analysis, we find that there is a relation between the Na+ binding and the rigidification of the γ loop, which may shed light on the mysterious role of the γ loop in thrombin.
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Affiliation(s)
- Dizhou Wu
- Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27106 United States
| | - Jiajie Xiao
- Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27106 United States
- Freenome, South San Francisco, California 94080 United States
| | - Freddie R Salsbury
- Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27106 United States
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