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Abstract
A new approach to on-resin detection of three model proteases (trypsin, chymotrypsin, and thrombin) has been developed, while at the same time already described methodology for simultaneous detection of two enzymes (trypsin and chymotrypsin) has been additionally generalized. Appropriate immobilized substrates, comprising specifically cleavable peptide sequences capped with fluorescent dyes, have been synthesized on Rink Amide PEGA resin or Amino PEGA resin modified with backbone amide linker (BAL). Resulting solid support-bound probes were then dispersed into Tris-HCl buffer solution (pH = 8.0) and subjected to enzymatic cleavage. Liberated fluorophores have been tracked by fluorescence measuring. The competitive activities of studied proteases towards the thrombin probe have been efficiently limited and controlled by employing a Bowman-Birk inhibitor into a system.
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Noubouossie DF, Henderson MW, Mooberry M, Ilich A, Ellsworth P, Piegore M, Skinner SC, Pawlinski R, Welsby I, Renné T, Hoffman M, Monroe DM, Key NS. Red blood cell microvesicles activate the contact system, leading to factor IX activation via 2 independent pathways. Blood 2020; 135:755-765. [PMID: 31971571 PMCID: PMC7059516 DOI: 10.1182/blood.2019001643] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 01/08/2020] [Indexed: 01/01/2023] Open
Abstract
Storage lesion-induced, red cell-derived microvesicles (RBC-MVs) propagate coagulation by supporting the assembly of the prothrombinase complex. It has also been reported that RBC-MVs initiate coagulation via the intrinsic pathway. To elucidate the mechanism(s) of RBC-MV-induced coagulation activation, the ability of storage lesion-induced RBC-MVs to activate each zymogen of the intrinsic pathway was assessed in a buffer system. Simultaneously, the thrombin generation (TG) assay was used to assess their ability to initiate coagulation in plasma. RBC-MVs directly activated factor XII (FXII) or prekallikrein, but not FXI or FIX. RBC-MVs initiated TG in normal pooled plasma and in FXII- or FXI-deficient plasma, but not in FIX-deficient plasma, suggesting an alternate pathway that bypasses both FXII and FXI. Interestingly, RBC-MVs generated FIXa in a prekallikrein-dependent manner. Similarly, purified kallikrein activated FIX in buffer and initiated TG in normal pooled plasma, as well as FXII- or FXI-deficient plasma, but not FIX-deficient plasma. Dual inhibition of FXIIa by corn trypsin inhibitor and kallikrein by soybean trypsin inhibitor was necessary for abolishing RBC-MV-induced TG in normal pooled plasma, whereas kallikrein inhibition alone was sufficient to abolish TG in FXII- or FXI-deficient plasma. Heating RBC-MVs at 60°C for 15 minutes or pretreatment with trypsin abolished TG, suggesting the presence of MV-associated proteins that are essential for contact activation. In summary, RBC-MVs activate both FXII and prekallikrein, leading to FIX activation by 2 independent pathways: the classic FXIIa-FXI-FIX pathway and direct kallikrein activation of FIX. These data suggest novel mechanisms by which RBC transfusion mediates inflammatory and/or thrombotic outcomes.
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Affiliation(s)
| | - Michael W Henderson
- UNC Blood Research Center, and
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | | | - Anton Ilich
- Department of Medicine
- UNC Blood Research Center, and
| | - Patrick Ellsworth
- Department of Medicine
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Mark Piegore
- Department of Medicine
- UNC Blood Research Center, and
| | - Sarah C Skinner
- Department of Medicine
- UNC Blood Research Center, and
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | | | - Ian Welsby
- Department of Anesthesiology, Duke University, Durham, NC
| | - Thomas Renné
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; and
| | - Maureane Hoffman
- Department of Pathology, Veteran Affairs Medical Center, Durham, NC
| | | | - Nigel S Key
- Department of Medicine
- UNC Blood Research Center, and
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC
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Ceppa EP, Lyo V, Grady EF, Knecht W, Grahn S, Peterson A, Bunnett NW, Kirkwood KS, Cattaruzza F. Serine proteases mediate inflammatory pain in acute pancreatitis. Am J Physiol Gastrointest Liver Physiol 2011; 300:G1033-42. [PMID: 21436316 PMCID: PMC3774216 DOI: 10.1152/ajpgi.00305.2010] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Acute pancreatitis is a life-threatening inflammatory disease characterized by abdominal pain of unknown etiology. Trypsin, a key mediator of pancreatitis, causes inflammation and pain by activating protease-activated receptor 2 (PAR(2)), but the isoforms of trypsin that cause pancreatitis and pancreatic pain are unknown. We hypothesized that human trypsin IV and rat P23, which activate PAR(2) and are resistant to pancreatic trypsin inhibitors, contribute to pancreatic inflammation and pain. Injections of a subinflammatory dose of exogenous trypsin increased c-Fos immunoreactivity, indicative of spinal nociceptive activation, but did not cause inflammation, as assessed by measuring serum amylase and myeloperoxidase activity and by histology. The same dose of trypsin IV and P23 increased some inflammatory end points and caused a more robust effect on nociception, which was blocked by melagatran, a trypsin inhibitor that also inhibits polypeptide-resistant trypsin isoforms. To determine the contribution of endogenous activation of trypsin and its minor isoforms, recombinant enterokinase (ENK), which activates trypsins in the duodenum, was administered into the pancreas. Intraductal ENK caused nociception and inflammation that were diminished by polypeptide inhibitors, including soybean trypsin inhibitor and a specific trypsin inhibitor (type I-P), and by melagatran. Finally, the secretagogue cerulein induced pancreatic nociceptive activation and nocifensive behavior that were reversed by melagatran. Thus trypsin and its minor isoforms mediate pancreatic pain and inflammation. In particular, the inhibitor-resistant isoforms trypsin IV and P23 may be important in mediating prolonged pancreatic inflammatory pain in pancreatitis. Our results suggest that inhibitors of these isoforms could be novel therapies for pancreatitis pain.
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Affiliation(s)
- Eugene P. Ceppa
- 1Department of Surgery, Duke University Medical Center, Durham, North Carolina;
| | | | | | - Wolfgang Knecht
- 4Molecular Pharmacology and Lead Generation, AstraZeneca Research and Development, Mölndal, Sweden
| | | | - Anders Peterson
- 4Molecular Pharmacology and Lead Generation, AstraZeneca Research and Development, Mölndal, Sweden
| | - Nigel W. Bunnett
- Departments of 2Surgery and ,3Physiology, University of California, San Francisco, San Francisco, California; and
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Gulla KC, Gupta K, Krarup A, Gal P, Schwaeble WJ, Sim RB, O'Connor CD, Hajela K. Activation of mannan-binding lectin-associated serine proteases leads to generation of a fibrin clot. Immunology 2010; 129:482-95. [PMID: 20002787 PMCID: PMC2842495 DOI: 10.1111/j.1365-2567.2009.03200.x] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Revised: 10/11/2009] [Accepted: 10/14/2009] [Indexed: 01/19/2023] Open
Abstract
The lectin pathway of complement is activated upon binding of mannan-binding lectin (MBL) or ficolins (FCNs) to their targets. Upon recognition of targets, the MBL-and FCN-associated serine proteases (MASPs) are activated, allowing them to generate the C3 convertase C4b2a. Recent findings indicate that the MASPs also activate components of the coagulation system. We have previously shown that MASP-1 has thrombin-like activity whereby it cleaves and activates fibrinogen and factor XIII. MASP-2 has factor Xa-like activity and activates prothrombin through cleavage to form thrombin. We now report that purified L-FCN-MASPs complexes, bound from serum to N-acetylcysteine-Sepharose, or MBL-MASPs complexes, bound to mannan-agarose, generate clots when incubated with calcified plasma or purified fibrinogen and factor XIII. Plasmin digestion of the clot and analysis using anti-D-dimer antibodies revealed that the clot was made up of fibrin and was similar to that generated by thrombin in normal human plasma. Fibrinopeptides A and B (FPA and FPB, respectively) were released after fibrinogen cleavage by L-FCN-MASPs complexes captured on N-acetylcysteine-Sepharose. Studies of inhibition of fibrinopeptide release indicated that the dominant pathway for clotting catalysed by the MASPs is via MASP-2 and prothrombin activation, as hirudin, a thrombin inhibitor that does not inhibit MASP-1 and MASP-2, substantially inhibits fibrinopeptide release. In the light of their potent chemoattractant effects on neutrophil and fibroblast recruitment, the MASP-mediated release of FPA and FPB may play a role in early immune activation. Additionally, MASP-catalysed deposition and polymerization of fibrin on the surface of micro-organisms may be protective by limiting the dissemination of infection.
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Kirschenbaum DM. Molar absorptivity and A-1 -1cm values for proteins at selected wavelengths of the ultraviolet and visible region. I. INTERNATIONAL JOURNAL OF PROTEIN RESEARCH 2009; 3:109-15. [PMID: 5165566 DOI: 10.1111/j.1399-3011.1971.tb01700.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Ascenzi P, Coletta M, Amiconi G, de Cristofaro R, Bolognesi M, Guarneri M, Menegatti E. Binding of the bovine basic pancreatic trypsin inhibitor (Kunitz) to human alpha-, beta- and gamma-thrombin; a kinetic and thermodynamic study. BIOCHIMICA ET BIOPHYSICA ACTA 1988; 956:156-61. [PMID: 3167067 DOI: 10.1016/0167-4838(88)90262-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Kinetic and thermodynamic parameters for the binding of the bovine basic pancreatic trypsin inhibitor (BPTI, Kunitz inhibitor) to human alpha-, beta- and gamma-thrombin have been determined, between 5 and 45 degrees C, at pH 7.5. BPTI-binding properties to human thrombins have been analyzed in parallel with those of serine (pro)enzymes acting on cationic and non-cationic substrates, with particular reference to the bovine beta-trypsin/BPTI system. The observed binding behaviour of BPTI to human alpha-, beta- and gamma-thrombin has been related to the inferred stereochemistry of the enzyme/inhibitor contact region(s).
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Affiliation(s)
- P Ascenzi
- C.N.R., Department of Biochemical Sciences, University of Rome, La Sapienza, Italy
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Gibbs A, Nesheim ME, Campbell A, Doctor VM. Mechanism of anticoagulant action by protein inhibitors from bovine testes and salmon sperm. Thromb Res 1987; 47:353-63. [PMID: 3629561 DOI: 10.1016/0049-3848(87)90149-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A protein inhibitor was isolated from commercial preparations of salmon sperm and its physical and anticoagulant properties were compared with an inhibitor isolated earlier from commercial preparation of bovine testicular hyaluronidase. The inhibitor from bovine source was heat and acid labile and had a molecular weight of approximately equal to 35000 while the one from salmon sperm had a molecular weight of approximately equal to 5700 and was stable to heat and acid. To determine the mechanism of the inhibitory effect, a system of purified components consisting of isolated prothrombin, Factor Xa, Factor Va, Ca++, and vesicles of phosphatidylcholine (PCPS, 25% PS) was used. Included also was dansylarginine N- (3-ethyl-1,5-pentanedidyl) amide (DAPA) which binds newly formed thrombin and yields the time course of prothrombin conversion by virtue of enhanced fluorescence of the DAPA - thrombin complex. The inhibitor of bovine testes was effective only when PCPS was the limiting component suggesting that its action was directed against the phospholipid component of the prothrombinase complex. The inhibitor from salmon sperm was found to lower the rate of conversion of prothrombin to thrombin in an in vitro system where thrombin generation was measured by its action on the chromogenic substrate H-D-Phe-Pip-Arg-pNa (S-2238). It inhibited the conversion of Factor X to Xa and also the the amidolytic cleavage by Factor Xa of chromogenic substrate N-Benz-Ile-Glu-Gly-Arg-pNa (S-2222).
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Berliner LJ, Birktoft JJ, Miller TL, Musci G, Scheffler JE, Shen YY, Sugawara Y. Thrombin: active-site topography. Ann N Y Acad Sci 1986; 485:80-95. [PMID: 3032052 DOI: 10.1111/j.1749-6632.1986.tb34570.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Lundblad RL, Nesheim ME, Straight DL, Sailor S, Bowie J, Jenzano JW, Roberts JD, Mann KG. Bovine alpha- and beta-thrombin. Reduced fibrinogen-clotting activity of beta-thrombin is not a consequence of reduced affinity for fibrinogen. J Biol Chem 1984. [DOI: 10.1016/s0021-9258(17)39827-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Doctor VM, Spence H, Carroll EY. Isolation and properties of a new anticoagulant protein from commercial bovine testicular hyaluronidase. Thromb Res 1983; 30:565-71. [PMID: 6612684 DOI: 10.1016/0049-3848(83)90264-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Bovine testicular hyaluronidase from various commercial sources showed the presence of an inhibitor of human plasma prothrombin time (PT). A testicular anticoagulant protein (TAP) was isolated from it by a 3-step procedure. The material was first passed through conconavalin-A-sepharose affinity chromatography where the anticoagulant material was separated from the hyaluronidase and protease which were retained by the column. In the second step the lower molecular weight proteins were removed by ultrafiltration. The supernatant which contained the anticoagulant protein was passed through the carboxymethyl cellulose column and the active material was eluted by 0.4 M NaCl solution. Sodium dodecyl sulfate (SDS) gel electrophoresis gave a molecular weight of approximately 35000. Unlike many small molecular weight proteins from bovine testes, TAP looses its anticoagulant property by heating for 30 minutes at 55 degrees C or by storage at pH 3.0 for 2 hours and it does not inhibit trypsin or thrombin. Its isoelectric pH was 9.7. Diisopropyl fluorophosphate (DFP) treated TAP was not effective as an anticoagulant.
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Walz DA, Love JN, Seegers WH, Brown TR. Radioimmunoassays for human prothrombin fragments: development and implementation. Ann N Y Acad Sci 1981; 370:398-413. [PMID: 6943965 DOI: 10.1111/j.1749-6632.1981.tb29752.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Rosenberg JS, Beeler DL, Rosenberg RD. Activation of human prothrombin by highly purified human factors V and X-a in presence of human antithrombin. J Biol Chem 1975. [DOI: 10.1016/s0021-9258(19)41737-7] [Citation(s) in RCA: 86] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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9 Thrombin and Prothrombin. ACTA ACUST UNITED AC 1971. [DOI: 10.1016/s1874-6047(08)60400-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Batt C, Mikulka T, Mann KG, Guarracino C, Altiere R, Graham R, Quigley J, Wolf J, Zafonte C. The Purification and Properties of Bovine Thrombin. J Biol Chem 1970. [DOI: 10.1016/s0021-9258(18)62787-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Ganrot PO, Stenflo J. Prothrombin derivatives in human serum. Isolation and some properties of the non-thrombin fragments. Scand J Clin Lab Invest 1970; 26:161-8. [PMID: 5472594 DOI: 10.3109/00365517009049229] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Schwenke KD. Fortschritte auf dem Gebiet der Trennung und Reinigung von natürlichen Makromolekülen und Partikeln mit besonderer Berücksichtigung von Nahrung und Ernährung. 2. Mitt. Gelfiltration. ACTA ACUST UNITED AC 1970. [DOI: 10.1002/food.19700140209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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