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Zhou W, You B, Zheng Y, Si S, Li Y, Zhang J. Expression, purification, and biological activity evaluation of cathepsin L in mammalian cells. Biosci Biotechnol Biochem 2024; 88:405-411. [PMID: 38271604 DOI: 10.1093/bbb/zbae005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 01/12/2024] [Indexed: 01/27/2024]
Abstract
Cathepsin L (CTSL) could cleave and activate SARS-CoV-2 Spike protein to promote viral entry, making it a hopeful therapeutic target for COVID-19 prevention and treatment. So CTSL inhibitors are considered to be a promising strategy to SARS-CoV-2 infection. CTSL has previously been expressed in inclusion body in Escherichia coli. In order to prepare CTSL with high purity and activity in soluble active form, we transformed HEK-293T cells with a recombinant mammalian expression plasmid. CTSL was purified to a purity about 95%, found to migrate at approximately 43 kDa and exhibited substrate specificity against Z-Phe-Arg-AMC with specific activity of no less than 85 081 U/mg, characteristic of active CTSL. Although eukaryotic purified CTSL is commercially available, our study for the first time reported the details of the expression, purification, and characterization of active, recombinant CTSL in eukaryocyte system, which laid an experimental foundation for the establishment of high-throughput screening model for anti-coronavirus drugs targeting CTSL.
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Affiliation(s)
- Wenwen Zhou
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Baoqing You
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yifan Zheng
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Shuyi Si
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yan Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jing Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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2
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Ling C, Zhang J, Lin D, Tao A. Approaches for the generation of active papain-like cysteine proteases from inclusion bodies of Escherichia coli. World J Microbiol Biotechnol 2015; 31:681-90. [PMID: 25792298 DOI: 10.1007/s11274-015-1804-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Accepted: 01/11/2015] [Indexed: 11/25/2022]
Abstract
Papain-like cysteine proteases are widely expressed, fulfill specific functions in extracellular matrix turnover, antigen presentation and processing events, and may represent viable drug targets for major diseases. In depth and rigorous studies of the potential for these proteins to be targets for drug development require sufficient amounts of protease protein that can be used for both experimental and therapeutic purposes. Escherichia coli was widely used to express papain-like cysteine proteases, but most of those proteases are produced in insoluble inclusion bodies that need solubilizing, refolding, purifying and activating. Refolding is the most critical step in the process of generating active cysteine proteases and the current approaches to refolding include dialysis, dilution and chromatography. Purification is mainly achieved by various column chromatography. Finally, the attained refolded proteases are examined regarding their protease structures and activities.
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Affiliation(s)
- Chunfang Ling
- School of Life Science, South China Normal University, 55# Zhongshan Road West, Tianhe District, Guangzhou, 510631, People's Republic of China
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3
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Emmott AA, Mort JS. Efficient processing of procathepsin K to the mature form. Protein Expr Purif 2013; 91:37-41. [DOI: 10.1016/j.pep.2013.06.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 06/06/2013] [Accepted: 06/25/2013] [Indexed: 11/16/2022]
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4
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Roy S, Dattagupta J, Biswas S. Expression of recombinant human cathepsin K is enhanced by codon optimization. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.06.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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5
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Novinec M, Pavšič M, Lenarčič B. A simple and efficient protocol for the production of recombinant cathepsin V and other cysteine cathepsins in soluble form in Escherichia coli. Protein Expr Purif 2012; 82:1-5. [DOI: 10.1016/j.pep.2011.11.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 10/24/2011] [Accepted: 11/02/2011] [Indexed: 11/27/2022]
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6
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Caglič D, Globisch A, Kindermann M, Lim NH, Jeske V, Juretschke HP, Bartnik E, Weithmann KU, Nagase H, Turk B, Wendt KU. Functional in vivo imaging of cysteine cathepsin activity in murine model of inflammation. Bioorg Med Chem 2010; 19:1055-61. [PMID: 21130662 DOI: 10.1016/j.bmc.2010.10.028] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Revised: 09/29/2010] [Accepted: 10/12/2010] [Indexed: 11/15/2022]
Abstract
Near-infrared fluorophore (NIRF)-labeled imaging probes are becoming increasingly important in bio-molecular imaging applications, that is, in animal models for tumor imaging or inflammation studies. In this study we showed that the previously introduced chemical concept of 'Reverse Design' represents an efficient strategy for the generation of selective probes for cysteine proteases from chemically optimized protease inhibitors for investigations in proteomic lysates as well as for in vivo molecular imaging studies. The newly developed activity-based probe AW-091 was demonstrated to be highly selective for cathepsin S in vitro and proved useful in monitoring cysteine cathepsin activity in vivo, that is, in zymosan-induced mouse model of inflammation. AW-091 showed higher signal-to-background ratios at earlier time points than the commercially available polymer-based ProSense680 (VisEn Medical) and thus represents an efficient new tool for studying early proteolytic processes leading to various diseases, including inflammation, cancer, and rheumatoid arthritis. In addition, the fluorescent signal originating from the cleaved AW-091 was shown to be reduced by the administration of an anti-inflammatory drug, dexamethasone and by the cathepsin inhibitor E-64, providing a valuable system for the evaluation of small-molecule inhibitors of cathepsins.
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Affiliation(s)
- Dejan Caglič
- Jožef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, 1000 Ljubljana, Slovenia
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7
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Dutta S, Ghosh R, Dattagupta J, Biswas S. Heterologous expression of a thermostable plant cysteine protease in Escherichia coli both in soluble and insoluble forms. Process Biochem 2010. [DOI: 10.1016/j.procbio.2010.04.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Abstract
The human cysteine peptidase cathepsin K is a key enzyme in bone homoeostasis and other physiological functions. In the present study we investigate the mechanism of cathepsin K action at physiological plasma pH and its regulation by modifiers that bind outside of the active site. We show that at physiological plasma pH the enzyme fluctuates between multiple conformations that are differently susceptible to macromolecular inhibitors and can be manipulated by varying the ionic strength of the medium. The behaviour of the enzyme in vitro can be described by the presence of two discrete conformations with distinctive kinetic properties and different susceptibility to inhibition by the substrate benzyloxycarbonyl-Phe-Arg-7-amino-4-methylcoumarin. We identify and characterize sulfated glycosaminoglycans as natural allosteric modifiers of cathepsin K that exploit the conformational flexibility of the enzyme to regulate its activity and stability against autoproteolysis. All sulfated glycosaminoglycans act as non-essential activators in assays using low-molecular-mass substrates. Chondroitin sulfate and dermatan sulfate bind at one site on the enzyme, whereas heparin binds at an additional site and has a strongly stabilizing effect that is unique among human glycosaminoglycans. All glycosaminoglycans stimulate the elastinolytic activity of cathepsin K at physiological plasma pH, but only heparin also increases the collagenolytic activity of the enzyme under these conditions. Altogether these results provide novel insight into the mechanism of cathepsin K function at the molecular level and its regulation in the extracellular space.
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9
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Je JE, Ahn SJ, Kim NY, Seo JS, Kim MS, Park NG, Kim JK, Chung JK, Lee HH. Molecular cloning, expression analysis and enzymatic characterization of cathepsin K from olive flounder (Paralichthys olivaceus). Comp Biochem Physiol A Mol Integr Physiol 2009; 154:474-85. [DOI: 10.1016/j.cbpa.2009.07.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Revised: 07/28/2009] [Accepted: 07/30/2009] [Indexed: 10/20/2022]
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10
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Sabotic J, Popovic T, Puizdar V, Brzin J. Macrocypins, a family of cysteine protease inhibitors from the basidiomycete Macrolepiota procera. FEBS J 2009; 276:4334-45. [PMID: 19678836 DOI: 10.1111/j.1742-4658.2009.07138.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new family of cysteine protease inhibitors from the basidiomycete Macrolepiota procera has been identified and the family members have been termed macrocypins. These macrocypins are encoded by a family of genes that is divided into five groups with more than 90% within-group sequence identity and 75-86% between-group sequence identity. Several differences in the promoter and noncoding sequences suggest regulation of macrocypin expression at different levels. High yields of three different recombinant macrocypins were produced by bacterial expression. The sequence diversity was shown to affect the inhibitory activity of macrocypins, the heterologously expressed macrocypins belonging to different groups showing differences in their inhibitory profiles. Macrocypins are effective inhibitors of papain and cysteine cathepsin endopeptidases, and also inhibit cathepsins B and H, which exhibit both exopeptidase and endopeptidase activities. The cysteine protease legumain is inhibited by macrocypins with the exception of one representative that exhibits, instead, a weak inhibition of serine protease trypsin. Macrocypins exhibit similar basic biochemical characteristics, stability against high temperature and extremes of pH, and inhibitory profiles similar to those of clitocypin from Clitocybe nebularis, the sole representative of the I48 protease inhibitor family in the merops database. This suggests that they belong to the same merops family of cysteine protease inhibitors, the mycocypins, and substantiates the establishment of the I48 protease inhibitor family.
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Affiliation(s)
- Jerica Sabotic
- Department of Biotechnology, JoZef Stefan Institute, Jamova 39, Ljubljana, Slovenia.
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11
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Bubik A, Sedmak B, Novinec M, Lenarcic B, Lah TT. Cytotoxic and peptidase inhibitory activities of selected non-hepatotoxic cyclic peptides from cyanobacteria. Biol Chem 2009; 389:1339-46. [PMID: 18713022 DOI: 10.1515/bc.2008.153] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Toxic cyanobacterial blooms are a rich source of metabolites having a variety of biological activities. Two main groups of cyclic peptides, depsipeptides and ureido linkage-containing peptides, reportedly inhibit serine peptidases. We characterised their inhibitory properties against selected peptidases and investigated their influence on cell viability. The depsipeptide planktopeptin BL1125 is a strong linear competitive tight-binding inhibitor of leukocyte (K(i)=2.9 nm) and pancreatic (K(i)=7.2 nm) elastase and also of chymotrypsin (K(i)=6.1 nm). Anabaenopeptins B and F show no inhibition against chymotrypsin, but inhibit both elastases. The tested cyclic peptides do not inhibit trypsin, urokinase, kallikrein 1 or cysteine peptidases. All three tested cyanopeptides show no short-term cytotoxicity in concentrations of up to 10 mum, but impair the metabolic activity of normal human astrocytes after prolonged exposure (48-96 h), whereas glioblastoma cells, tumour cells of the same type, are resistant. Strong inhibition and relative selectivity of the tested cyanopeptides suggests that they are potential candidates for application in inflammatory diseases and possibly some types of cancers.
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Affiliation(s)
- Anja Bubik
- Department of Genetic Toxicology, National Institute of Biology, Vecna pot 111, POB 141, SI-1001 Ljubljana, Slovenia
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12
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Abstract
The name "cysteine protease" refers to the protease's nucleophilic cysteine residue that forms a covalent bond with the carbonyl group of the scissile peptide bond in substrates. The papain-like cysteine proteases, classified as the "C1 family" are the most predominant cysteine proteases. These proteases are found in viruses, plants, primitive parasites, invertebrates, and vertebrates alike. Mammalian papain-like cysteine proteases are also known as cathepsins. This unit discusses cathepsins, and their subcellular and tissue localization, catalytic mechanism, and substrate specificity. Several tables illustrate the properties of the various cathepsins.
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Affiliation(s)
- D Brömme
- Mount Sinai School of Medicine, New York, New York, USA
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13
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Droga-Mazovec G, Bojic L, Petelin A, Ivanova S, Romih R, Repnik U, Salvesen GS, Stoka V, Turk V, Turk B. Cysteine cathepsins trigger caspase-dependent cell death through cleavage of bid and antiapoptotic Bcl-2 homologues. J Biol Chem 2008; 283:19140-50. [PMID: 18469004 DOI: 10.1074/jbc.m802513200] [Citation(s) in RCA: 290] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
As a model for defining the role of lysosomal cathepsins in apoptosis, we characterized the action of the lysosomotropic agent LeuLeuOMe using distinct cellular models. LeuLeuOMe induces lysosomal membrane permeabilization, resulting in release of lysosomal cathepsins that cleave the proapoptotic Bcl-2 family member Bid and degrade the antiapoptotic member Bcl-2, Bcl-xL, or Mcl-1. The papain-like cysteine protease inhibitor E-64d largely prevented apoptosis, Bid cleavage, and Bcl-2/Bcl-xL/Mcl-1 degradation. The pancaspase inhibitor N-benzyloxycarbonyl-Val-Ala-Asp(OMe)fluoromethyl ketone failed to prevent Bid cleavage and degradation of anti-apoptotic Bcl-2 homologues but substantially decreased cell death, suggesting that cathepsin-mediated apoptosis in these cellular models mostly follows a caspase-dependent pathway. Moreover, in vitro experiments showed that one or more of the cysteine cathepsins B, L, S, K, and H could cleave Bcl-2, Bcl-xL, Mcl-1, Bak, and BimEL, whereas no Bax cleavage was observed. On the basis of inhibitor studies, we demonstrate that lysosomal disruption triggered by LeuLeuOMe occurs before mitochondrial damage. We propose that degradation of anti-apoptotic Bcl-2 family members by lysosomal cathepsins synergizes with cathepsin-mediated activation of Bid to trigger a mitochondrial pathway to apoptosis. Moreover, XIAP (X-chromosome-linked inhibitor of apoptosis) was also found to be a target of cysteine cathepsins, suggesting that cathepsins can mediate caspase-dependent apoptosis also downstream of mitochondria.
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Affiliation(s)
- Gabriela Droga-Mazovec
- Department of Biochemistry, Molecular and Structural Biology, J. Stefan Institute, Sl-1000 Ljubljana, Slovenia
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14
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Kramer G, Paul A, Kreusch A, Schüler S, Wiederanders B, Schilling K. Optimized folding and activation of recombinant procathepsin L and S produced in Escherichia coli. Protein Expr Purif 2007; 54:147-56. [PMID: 17391985 DOI: 10.1016/j.pep.2007.02.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2007] [Revised: 02/10/2007] [Accepted: 02/12/2007] [Indexed: 11/19/2022]
Abstract
Large scale production of the recombinant human cathepsins L and S was optimized. Final purity was nearly 100%, yield 65% and 41%, respectively. Cost-effective expression in Escherichia coli, inclusion body purification and solubilization followed modified standard protocols. Most contribution to the remarkable increase in over-all efficiency came from the subsequent steps: folding by dilution, selective HIC-capturing of the folded proenzymes, and auto-activation. The effort to optimize the process parameters for folding and activation was greatly reduced by central composite fractional factorial experimental design, considering curved responses as well as factor interactions. Theoretical and practical features of this powerful tool for experimental design are given. Yield in procathepsin S folding could be further increased by addition of an excess of its own native propeptide with known intramolecular chaperone function. This corroborates literature data on proenzyme folding and is broadly discussed in the light of the lower conformational stability of the prodomain compared to the catalytic unit. Auto-activation kinetics was largely different between the two related proenzymes; from its time course contribution of uni- and bimolecular events in proregion hydrolysis and rate constants were estimated.
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Affiliation(s)
- Gerd Kramer
- Institut für Biochemie I, Klinikum der Friedrich-Schiller-Universtität Jena, Nonnenplan 2, D-07743 Jena, Germany
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15
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Novinec M, Grass RN, Stark WJ, Turk V, Baici A, Lenarcic B. Interaction between human cathepsins K, L, and S and elastins: mechanism of elastinolysis and inhibition by macromolecular inhibitors. J Biol Chem 2007; 282:7893-902. [PMID: 17227755 DOI: 10.1074/jbc.m610107200] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Proteolytic degradation of elastic fibers is associated with a broad spectrum of pathological conditions such as atherosclerosis and pulmonary emphysema. We have studied the interaction between elastins and human cysteine cathepsins K, L, and S, which are known to participate in elastinolytic activity in vivo. The enzymes showed distinctive preferences in degrading elastins from bovine neck ligament, aorta, and lung. Different susceptibility of these elastins to proteolysis was attributed to morphological differences observed by scanning electron microscopy. Kinetics of cathepsin binding to the insoluble substrate showed that the process occurs in two steps. The enzyme is initially adsorbed on the elastin surface in a nonproductive manner and then rearranges to form a catalytically competent complex. In contrast, soluble elastin is bound directly in a catalytically productive manner. Studies of enzyme partitioning between the phases showed that cathepsin K favors adsorption on elastin; cathepsin L prefers the aqueous environment, and cathepsin S is equally distributed among both phases. Our results suggest that elastinolysis by cysteine cathepsins proceeds in cycles of enzyme adsorption, binding of a susceptible peptide moiety, hydrolysis, and desorption. Alternatively, the enzyme may also form a new catalytic complex without prior desorption and re-adsorption. In both cases the active center of the enzymes remains at least partly accessible to inhibitors. Elastinolytic activity was readily abolished by cystatins, indicating that, unlike enzymes such as leukocyte elastase, pathological elastinolytic cysteine cathepsins might represent less problematic drug targets. In contrast, thyropins were relatively inefficient in preventing elastinolysis by cysteine cathepsins.
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Affiliation(s)
- Marko Novinec
- Department of Biochemistry and Molecular Biology, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
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16
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Sabotic J, Galesa K, Popovic T, Leonardi A, Brzin J. Comparison of natural and recombinant clitocypins, the fungal cysteine protease inhibitors. Protein Expr Purif 2006; 53:104-11. [PMID: 17223361 DOI: 10.1016/j.pep.2006.11.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2006] [Revised: 11/22/2006] [Accepted: 11/22/2006] [Indexed: 12/31/2022]
Abstract
A member of the cysteine protease inhibitor clitocypin gene family from basidiomycete Clitocybe nebularis was expressed in Escherichia coli. Following careful optimization of the expression procedure the active inhibitor was purified from inclusion bodies and its properties examined and compared to those of the natural clitocypin. The CD spectrum of recombinant clitocypin was similar to that of natural clitocypin, indicating that protein was properly refolded during purification. In spite of some differences in primary structure, structural, functional and immunological equivalence was established. Kinetic analyses of the natural and recombinant clitocypins were performed. Both clitocypins inhibited a range of cysteine proteases to a similar extent, and demonstrated an unusually broad inhibitory spectrum, including distantly related proteases, such as papain and legumain, belonging to different protease families. The homogenous, biologically active recombinant clitocypin is obtained at levels adequate for further structure-function studies.
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Affiliation(s)
- Jerica Sabotic
- Department of Biochemistry and Molecular Biology, Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
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17
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Baird IR, Mosi R, Olsen M, Cameron BR, Fricker SP, Skerlj RT. ‘3+1’ mixed-ligand oxorhenium(V) complexes and their inhibition of the cysteine proteases cathepsin B and cathepsin K. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.10.058] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Kodera T, Asano M, Kawai M, Miwa T, Nio N. The Effective Methods in Refolding and Activation of Cathepsin L-like Soybean Protease D3. J Food Sci 2005. [DOI: 10.1111/j.1365-2621.2005.tb11507.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Wladyka B, Puzia K, Dubin A. Efficient co-expression of a recombinant staphopain A and its inhibitor staphostatin A in Escherichia coli. Biochem J 2005; 385:181-7. [PMID: 15320867 PMCID: PMC1134686 DOI: 10.1042/bj20040958] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Staphopain A is a staphylococcal cysteine protease. Genes encoding staphopain A and its specific inhibitor, staphostatin A, are localized in an operon. Staphopain A is an important staphylococcal virulence factor. It is difficult to perform studies on its interaction with other proteins due to problems in obtaining a sufficient amount of the enzyme from natural sources. Therefore efforts were made to produce a recombinant staphopain A. Sequences encoding the mature form of staphopain A and staphostatin A were PCR-amplified from Staphylococcus aureus genomic DNA and cloned into different compatible expression vectors. Production of staphopain A was observed only when the enzyme was co-expressed together with its specific inhibitor, staphostatin A. Loss of the function mutations introduced within the active site of staphopain A causes the expression of the inactive enzyme. Mutations within the reactive centre of staphostatin A result in abrogation of production of both the co-expressed proteins. These results support the thesis that the toxicity of recombinant staphopain A to the host is due to its proteolytic activity. The coexpressed proteins are located in the insoluble fraction. Ni2+-nitrilotriacetate immobilized metal-affinity chromatography allows for an efficient and easy purification of staphopain A. Our optimized refolding parameters allow restoration of the native conformation of the enzyme, with yields over 10-fold higher when compared with isolation from natural sources.
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Affiliation(s)
- Benedykt Wladyka
- Department of Analytical Biochemistry, Faculty of Biotechnology, Jagiellonian University, 7 Gronostajowa St., 30-387, Krakow, Poland.
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Langerholc T, Zavasnik-Bergant V, Turk B, Turk V, Abrahamson M, Kos J. Inhibitory properties of cystatin F and its localization in U937 promonocyte cells. FEBS J 2005; 272:1535-45. [PMID: 15752368 DOI: 10.1111/j.1742-4658.2005.04594.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cystatin F is a recently discovered type II cystatin expressed almost exclusively in immune cells. It is present intracellularly in lysosome-like vesicles, which suggests a potential role in regulating papain-like cathepsins involved in antigen presentation. Therefore, interactions of cystatin F with several of its potential targets, cathepsins F, K, V, S, H, X and C, were studied in vitro. Cystatin F tightly inhibited cathepsins F, K and V with Ki values ranging from 0.17 nM to 0.35 nM, whereas cathepsins S and H were inhibited with 100-fold lower affinities (Ki approximately 30 nM). The exopeptidases, cathepsins C and X were not inhibited by cystatin F. In order to investigate the biological significance of the inhibition data, the intracellular localization of cystatin F and its potential targets, cathepsins B, H, L, S, C and K, were studied by confocal microscopy in U937 promonocyte cells. Although vesicular staining was observed for all the enzymes, only cathepsins H and X were found to be colocalized with the inhibitor. This suggests that cystatin F in U937 cells may function as a regulatory inhibitor of proteolytic activity of cathepsin H or, more likely, as a protection against cathepsins misdirected to specific cystatin F containing endosomal/lysosomal vesicles. The finding that cystatin F was not colocalized with cystatin C suggests distinct functions for these two cysteine protease inhibitors in U937 cells.
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Affiliation(s)
- Tomaz Langerholc
- Department of Biochemistry and Molecular Biology, JoZef Stefan Institute, Ljubljana, Slovenia.
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21
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Deaton DN, Kumar S. Cathepsin K Inhibitors: Their Potential as Anti-Osteoporosis Agents. PROGRESS IN MEDICINAL CHEMISTRY 2004; 42:245-375. [PMID: 15003723 DOI: 10.1016/s0079-6468(04)42006-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- David N Deaton
- Medicinal Chemistry Department, GlaxoSmithKline Inc., 5 Moore Drive, Research Triangle Park, NC 27709, USA
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22
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Cirman T, Oresić K, Mazovec GD, Turk V, Reed JC, Myers RM, Salvesen GS, Turk B. Selective disruption of lysosomes in HeLa cells triggers apoptosis mediated by cleavage of Bid by multiple papain-like lysosomal cathepsins. J Biol Chem 2003; 279:3578-87. [PMID: 14581476 DOI: 10.1074/jbc.m308347200] [Citation(s) in RCA: 356] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Increasing evidence suggests that lysosomal proteases are actively involved in apoptosis. Using HeLa cells as the model system, we show that selective lysosome disruption with L-leucyl-L-leucine methyl ester results in apoptosis, characterized by translocation of lysosomal proteases into the cytosol and by the cleavage of a proapoptotic Bcl-2-family member Bid. Apoptosis and Bid cleavage, but not translocation of lysosomal proteases to the cytosol, could be prevented by 15 microM L-trans-epoxysuccinyl(OEt)-Leu-3-methylbutylamide, an inhibitor of papain-like cysteine proteases. Incubation of cells with 15 microM N-benzoyloxycarbonyl-VAD-fluoromethyl ketone prevented apoptosis but not Bid cleavage, suggesting that cathepsin-mediated apoptosis in this system is caspase-dependent. In vitro experiments performed at neutral pH showed that papain-like cathepsins B, H, L, S, and K cleave Bid predominantly at Arg(65) or Arg(71). No Bid cleavage was observed with cathepsins C and X or the aspartic protease cathepsin D. Incubation of full-length Bid treated with cathepsins B, H, L, and S resulted in rapid cytochrome c release from isolated mitochondria. Thus, Bid may be an important mediator of apoptosis induced by lysosomal disruption.
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Affiliation(s)
- Tina Cirman
- Department of Biochemistry and Molecular Biology, Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
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Dickinson DP. Cysteine peptidases of mammals: their biological roles and potential effects in the oral cavity and other tissues in health and disease. CRITICAL REVIEWS IN ORAL BIOLOGY AND MEDICINE : AN OFFICIAL PUBLICATION OF THE AMERICAN ASSOCIATION OF ORAL BIOLOGISTS 2002; 13:238-75. [PMID: 12090464 DOI: 10.1177/154411130201300304] [Citation(s) in RCA: 134] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Cysteine peptidases (CPs) are phylogenetically ubiquitous enzymes that can be classified into clans of evolutionarily independent proteins based on the structural organization of the active site. In mammals, two of the major clans represented in the genome are: the CA clan, whose members share a structure and evolutionary history with papain; and the CD clan, which includes the legumains and caspases. This review focuses on the properties of these enzymes, with an emphasis on their potential roles in the oral cavity. The human genome encodes at least (but possibly no more than) 11 distinct enzymes, called cathepsins, that are members of the papain family C1A. Ten of these are present in rodents, which also carry additional genes encoding other cathepsins and cathepsin-like proteins. Human cathepsins are best known from the ubiquitously expressed lysosomal cathepsins B, H, and L, and dipeptidyl peptidase I (DPP I), which until recently were considered to mediate primarily "housekeeping" functions in the cell. However, mutations in DPP I have now been shown to underlie Papillon-Lefevre syndrome and pre-pubertal periodontitis. Other cathepsins are involved in tissue-specific functions such as bone remodeling, but relatively little is known about the functions of several recently discovered enzymes. Collectively, CPs participate in multiple host systems that are active in health and in disease. They are involved in tissue remodeling and turnover of the extracellular matrix, immune system function, and modulation and alteration of cell function. Intracellularly, CPs function in diverse processes including normal protein turnover, antigen and proprotein processing, and apoptosis. Extracellularly, they can contribute directly to the degradation of foreign proteins and the extracellular matrix. However, CPs can also participate in proteolytic cascades that amplify the degradative capacity, potentially leading to pathological damage, and facilitating the penetration of tissues by cancer cells. We know relatively little regarding the role of human CPs in the oral cavity in health or disease. Most studies to date have focused on the potential use of the lysosomal enzymes as markers for periodontal disease activity. Human saliva contains high levels of cystatins, which are potent CP inhibitors. Although these proteins are presumed to serve a protective function, their in vivo targets are unknown, and it remains to be discovered whether they serve to control any human CP activity.
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Affiliation(s)
- D P Dickinson
- Medical College of Georgia, School of Dentistry, Department of Oral Biology, and Maxillofacial Pathology, Augusta 30912, USA.
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Hwang HS, Chung HS. Preparation of active recombinant cathepsin K expressed in bacteria as inclusion body. Protein Expr Purif 2002; 25:541-6. [PMID: 12182837 DOI: 10.1016/s1046-5928(02)00033-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Human cathepsin K (EC 3.4.22.38) is a member of the cysteine protease family with high primary sequence homology to cathepsins S, L, and B. It has been shown that cathepsin K plays a major role in the resorption of the bone matrix by osteoclasts. Cathepsin K has a potential as a drug target for the diseases related to bone matrix metabolism such as osteoporosis. We have expressed recombinant human procathepsin K in Escherichia coli as inclusion bodies. Purified procathepsin K had size of 38kDa which is in agreement with the predicted mass of the construct. Refolding was done by rapid dilution into 50mM Tris-HCl, pH 8.0 buffer containing 5mM EDTA, 10 mM GSH, 1mM GSSG, 0.7 M L-arginine, 0.5 M NaCl, and 1% CHAPS and further dialysis against 25 mM Tris-HCl, pH 8.0 containing 0.5 M NaCl. Mature active cathepsin K was prepared from refolded procathepsin K by incubating at 40 degrees C in pH 4.0 buffers with or without pepsin or cysteine. The presence of pepsin or cysteine in autocatalysis buffer did not have effect on the degree of conversion of nascent to mature cathepsin K, but reduced the autocatalysis time slightly. Proteolytic activity was confirmed using synthetic substrate, and Western blotting identified mature cathepsin K. Active cathepsin K had type I and II collagenolytic activities which could be inhibited by E-64.
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Affiliation(s)
- Hyo-Sung Hwang
- Department of Microbiology, Hannam University, 133 Ojung-dong, Daeduk-ku, Daejon 306-791, Republic of Korea
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Tobbell DA, Middleton BJ, Raines S, Needham MRC, Taylor IWF, Beveridge JY, Abbott WM. Identification of in vitro folding conditions for procathepsin S and cathepsin S using fractional factorial screens. Protein Expr Purif 2002; 24:242-54. [PMID: 11858719 DOI: 10.1006/prep.2001.1573] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Human procathepsin S and cathepsin S were expressed as inclusion bodies in Escherichia coli. Following solubilization of the inclusion body proteins, fractional factorial protein folding screens were used to identify folding conditions for procathepsin S and cathepsin S. A primary folding screen, including eight factors each at two levels, identified pH and arginine as the main factors affecting procathepsin S folding. In a second simple screen, the yields were further improved. The in vitro folding of mature cathepsin S has never been reported previously. In this study we used a series of fractional factorial screens to identify conditions that enabled the active enzyme to be generated without the prodomain although the yields were much lower than achieved with procathepsin S. Our data show the power of fractional factorial screens to rapidly identify folding conditions even for a protein that does not easily fold into its active conformation.
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Affiliation(s)
- Dominique A Tobbell
- Department of Enabling Science and Technology, AstraZeneca, Mereside, Alderley Park, Macclesfield, SK10 4TG, United Kingdom
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Sijwali PS, Brinen LS, Rosenthal PJ. Systematic optimization of expression and refolding of the Plasmodium falciparum cysteine protease falcipain-2. Protein Expr Purif 2001; 22:128-34. [PMID: 11388810 DOI: 10.1006/prep.2001.1416] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The Plasmodium falciparum cysteine protease falcipain-2 is a potential new target for antimalarial chemotherapy. In order to obtain large quantities of active falcipain-2 for biochemical and structural analysis, a systematic assessment of optimal parameters for the expression and refolding of the protease was carried out. High-yield expression was achieved using M15(pREP4) Escherichia coli transformed with the pQE-30 plasmid containing a truncated profalcipain-2 construct. Recombinant falcipain-2 was expressed as inclusion bodies, solubilized, and purified by nickel affinity chromatography. A systematic approach was then used to optimize refolding parameters. This approach utilized 100-fold dilutions of reduced and denatured falcipain-2 into 203 different buffers in a microtiter plate format. Refolding efficiency varied markedly. Optimal refolding was obtained in an alkaline buffer containing glycerol or sucrose and equal concentrations of reduced and oxidized glutathione. After optimization of the expression and refolding protocols and additional purification with anion-exchange chromatography, 12 mg of falcipain-2 was obtained from 5 liters of E. coli, and crystals of the protease were grown. The systematic approach described here allowed the rapid evaluation of a large number of expression and refolding conditions and provided milligram quantities of recombinant falcipain-2.
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Affiliation(s)
- P S Sijwali
- Department of Medicine, San Francisco General Hospital, San Francisco, CA 94143, USA
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Jacquet A, Haumont M, Massaer M, Daminet V, Garcia L, Mazzu P, Jacobs P, Bollen A. Biochemical and immunological characterization of a recombinant precursor form of the house dust mite allergen Der p 1 produced by Drosophila cells. Clin Exp Allergy 2000; 30:677-84. [PMID: 10792360 DOI: 10.1046/j.1365-2222.2000.00823.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND The major house dust mite allergen Der p 1 elicits strong IgE antibody responses in patients suffering from mite allergy. OBJECTIVE This study reports the expression and characterization of a recombinant precursor form of Der p 1 secreted as ProDer p 1 from insect cells. METHODS The cDNA coding for ProDer p 1 was cloned downstream to the gp67 signal peptide, starting from commercial cDNA encoding Der p 1 and PCR-amplified ProDer p 1 genomic fragment. ProDer p 1, expressed in Drosophila cells and purified from culture medium, was compared to Der p 1 isolated from mite culture, in terms of glycosylation, enzymatic activity as well as IgG- and IgE-binding capacity. RESULTS Sequence analysis of the genomic clone of ProDer p 1 revealed that, besides two introns in the mature Der p 1 coding sequence, two introns were also present in the propeptide coding sequence. ProDer p 1 was purifed to homogeneity by a combination of ion-exchange, hydroxyapatite and gel filtration chromatographies. The precursor form of Der p 1 could be processed in vitro into mature Der p 1 under acidic and reducing conditions. Carbohydrate analysis clearly indicated that ProDer p 1 expressed from insect cells was glycosylated and that glycan structures were located only in the prosequence. ProDer p 1 displayed a similar immunoreactivity towards IgE, monoclonal and polyclonal IgG antibodies compared to natural Der p 1. Specific activity measurements using synthetic substrates clearly indicated that, contrary to natural Der p 1, ProDer p 1 was totally enzymatically inactive. CONCLUSIONS The expression of an enzymatically inactive and highly antigenic ProDer p 1 zymogen molecule could be a suitable strategy for the development of in vitro diagnosis test as well as for specific immunotherapy.
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Affiliation(s)
- A Jacquet
- Department of Applied Genetics, Institut de Biologie et de Médecine Moléculaires, Université Libre de Bruxelles, B-6041 Gosselies, Belgium
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