EP1472346A2 - Verfahren zur herstellung von rekombinanten proteinen in mikroorganismen - Google Patents
Verfahren zur herstellung von rekombinanten proteinen in mikroorganismenInfo
- Publication number
- EP1472346A2 EP1472346A2 EP20030737248 EP03737248A EP1472346A2 EP 1472346 A2 EP1472346 A2 EP 1472346A2 EP 20030737248 EP20030737248 EP 20030737248 EP 03737248 A EP03737248 A EP 03737248A EP 1472346 A2 EP1472346 A2 EP 1472346A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- plasminogen
- seq
- nucleic acid
- plasmid
- acid sequence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/48—Hydrolases (3) acting on peptide bonds (3.4)
- C12N9/50—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
- C12N9/64—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue
- C12N9/6421—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue from mammals
- C12N9/6424—Serine endopeptidases (3.4.21)
- C12N9/6435—Plasmin (3.4.21.7), i.e. fibrinolysin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/02—Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
- A61P27/02—Ophthalmic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/02—Antithrombotic agents; Anticoagulants; Platelet aggregation inhibitors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
- C12N15/62—DNA sequences coding for fusion proteins
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y304/00—Hydrolases acting on peptide bonds, i.e. peptidases (3.4)
- C12Y304/21—Serine endopeptidases (3.4.21)
- C12Y304/21007—Plasmin (3.4.21.7), i.e. fibrinolysin
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
- C07K2319/01—Fusion polypeptide containing a localisation/targetting motif
- C07K2319/02—Fusion polypeptide containing a localisation/targetting motif containing a signal sequence
Definitions
- the human fibrinolytic system contains the protease plasmin (Pm) as a central element.
- Pm protease plasmin
- MMP matrix metalloproteinases
- two physiological activators of plasminogen also known as plasminogen activators, PA
- tissue-type plasminogen activator tissue-type PA
- urokinase-type plasminogen activator urokinase-type PA
- u-PA urokinase-type PA
- the system is additionally characterized by a number of protease inhibitors, e.g. B. ⁇ 2-antiplasmin, regulated.
- protease inhibitors e.g. B. ⁇ 2-antiplasmin
- t-PA-mediated pathway is responsible for fibrin homeostasis, while the u-PA-mediated pathway in cell migration and tissue remodeling should be emphasized.
- t-PA-mediated pathway in cell migration and tissue remodeling should be emphasized.
- mice whose genes for plasminogen and t-PA or u-PA have been switched off.
- the lifespan of the animals was shortened significantly, which is due among other things to thrombosis and organ failure.
- Desire Collen Thrombosis and Haemostasis, 82, 1999 (i.
- plasmin is suitable for the treatment of heart attack or stroke patients in whom a rapid dissolution of the fibrin clot is crucial for survival, and is therefore an alternative treatment to that with plasminogen activators that only hydrolyses the fibrin clot reach indirectly.
- plasmin is also a potential therapeutic that can be used to treat wounds that do not heal or only heal slowly.
- Plasminogen is usually activated by t-PA only in the presence of fibrin, i.e. after the blood coagulation cascade has ended. In the absence of a substrate, plasmin is inhibited almost immediately by ⁇ 2 -antiplasmin. The plasmin binds to fibrin However, the interaction slows down significantly, which enables the fibrin clot to break down.
- plasminogen activation Since the resolution of blood clots in a heart attack or stroke is often unavoidable for the survival of the patient, various strategies of plasminogen activation are used for therapy. For example, the infusion of streptokinase leads to a rapid recanalization of the vascular lumens.
- streptokinase a bacterial protein
- the activation of plasminogen with streptokinase is not based on proteolytic activation but on complexation. This complex can then activate other plasminogen molecules to form plasmin.
- Urokinase is also used therapeutically, but like streptokinase at the molecular level, it cannot distinguish fibrin-bound plasminogen from free plasminogen. Therefore, recombinant human t-PA was developed, which was shown to be superior to streptokinase in the clinical studies. However, these findings could not be confirmed in other studies.
- plasminogen activators such as rt-PA (plus various derivatives), recombinant single chain urokinase-PA and recombinant staphylokinase emphasize the importance of the production systems generated with molecular genetic methods for the production of recombinant proteins for use in modern therapy.
- Plasminogen is the norwegian molecule of the fibrinolytic enzyme plasmin.
- the cD ⁇ A (Malinowski et al., Biochemistry, 23, 1984 (12); Forsgren et al., FEBS Lett. 213, 1987 (2)) and the gene including the non-coding introns (Petersen et al., J. Biol. Chem., 265, 1990 (3)) for human plasminogen have already been published in the scientific literature.
- Human plasminogen (hPg), the proenzyme of the serine protease plasmin, is a glycoprotein consisting of a polypeptide chain of 791 amino acids with a molecular weight of 92,000 and a theoretical isoelectric point of 7.1. The carbohydrate content is 2% (Collen, 1999, (1)). Plasminogen is formed in the liver, the plasma concentration is around 200 mg / 1 (1.5-2 ⁇ M).
- the molecule is divided into 7 structural domains; these include the ⁇ -terminal preactivation peptide (Glu-1 - Lys-77), five partially homologous Kringle domains and the catalytically active proteinase domain (Nal-562 - Asn-791; Collen, 1999 (1)).
- the structural motif of the catalytic triad common to all serine proteases is made up of the Amino acids His-603, Asp-646 and Ser-741 together.
- the Kringle domain 1 serves as a recognition sequence for binding the plasminogen to fibrin (Petersen et al., 1990 (3)) and various cell surface receptors.
- Another glycosylation site is the amino acid Ser-248.
- the amino acid Ser-578 can be phosphorylated.
- Activation takes place in the organism through proteolytic cleavage between the amino acids Arg-561 and Nal-562. This is followed by a further proteolytic activation between Lys-77 and Lys-78 to Lys-78-hPg. Alternatively, this bond can first be hydrolyzed directly in the Glu-Pg.
- the active plasmin Lys-78-hPm is always linked via disulfide bridges.
- the heavy chain of the hPm (1 / 78-561) is for the interaction with the substrates, e.g. B. fibrinogen and fibrin.
- the light chain (562-791) resulting from the C-terminus represents the catalytically active subunit.
- the plasminogen domains produced by the two working groups recombinantly in Pichia pastoris do not have the catalytic domain that is decisive for the physiological functionality.
- glycosylation thus results in a protein which lacks the important physiological functions both in terms of activatability (no enzyme activity detectable) and in terms of endothelial cell recognition (Gonzalez-Gronow et al., Biochimica et Biophysica Acta, 1039, 1990 (6) ).
- the post-translational modification with the carbohydrates also significantly influences the half-life in the blood of mammals.
- WO0250290 has disclosed the recombinant production of functional mini and microplasminogen in yeast.
- the authors expressed the genes for the catalytic domain of human plasminogen with (miniplasminogen) or without a Kringle domain (microplasminogen) in the host organism Pichia pastoris.
- the mini or microplasminogen produced in such a recombinant manner was then purified, processed to mini or microplasmin and its activity demonstrated in animal experiments.
- the claimed yield of the recombinant proteins is 100 mg / 1 for miniplasminogen and 3 mg / 1 for microplasminogen.
- the recombinant production of functional plasminogen in microorganisms has not yet been disclosed, so that a person skilled in the art can carry it out.
- the object of the present invention is therefore to produce functional human plasminogen in an inexpensive process and to process it to catalytically active plasmin.
- the invention relates to the cloning of the plasminogen gene, preferably the human micro and mini plasminogen gene and more preferably the glu or lys plasminogen gene or a functional variant thereof in each case, into expression vectors and the recombinant production of functional plasminogen, preferably functional human plasminogen, using molecular genetic methods.
- the invention further describes the identification of proteases which catalyze the activation of plasminogen to plasmin.
- the plasminogen or plasmin, which is produced by this invention, is free of contaminants such as. B. animal proteins or viruses that occur naturally when isolated from humans, cattle and other mammals and which can lead to side effects in the patient.
- the invention is characterized by a recombinant production method, comprising at least the following step: a.) Fusion of the nucleic acid sequence coding at least for the functional part of the plasminogen peptide with a nucleic acid sequence coding for at least one signal peptide, the one for the functional plasminogen peptide coding nucleic acid sequence and the nucleic acid sequence coding for at least the signal peptide are linked to codons for interfaces of proteases which ensure the cleavage of the signal peptide.
- the production of therapeutic proteins is increasingly being carried out using recombinant production systems. Because of cost factors, the aim is to carry out recombinant production in microbial, in particular bacterial, organisms.
- the eukaryotic host organism used particularly preferably belongs to the department of fungi, preferably to the Ascomycota. It is further preferred that it belongs to the Saccharomycotina, in particular to the class of the Saccharomycetes, here in particular to the order of the Saccharomycetales.
- the host organism also belongs to the family Saccharomycetaceae, here in particular to the genus Pichia.
- Eukaryotic microorganisms which are preferably used according to the invention are, for example, the baker's yeast Saccharomyces cerevisiae, further examples are Candida, the methanothrophic yeasts Pichia pastoris, Pichia methanolica and Hansenula polymorpha or filamentous fungi of the genus Aspergillus, such as, for. B. Asperg ⁇ llus niger, Aspergillus oryzae and Aspergillus nidulans. Pichia pastoris is particularly preferred.
- the recombinant production process is further characterized in that a nucleic acid molecule coding for at least the functional part of plasminogen is inserted into an expression vector for this microorganism, the nucleic acid molecule preferably coding for human plasminogen with that for at least one signal peptide, preferably a prepropeptide, preferably for the transport into the endoplasmic reticulum, coding nucleic acid molecule is fused, codons for protease interfaces are inserted between the two nucleic acid molecules, which enable the cleavage of the signal sequence or the prepropeptide in the host organism.
- a nucleic acid molecule coding for human plasminogen is preferably used.
- nucleic acid molecules can be used which code for plasminogen from other mammals. This leads to the production of plasminogen in the respective mammals.
- the recombinant human plasminogen is formed by overexpression in accordance with the present method and, if desired, can be secreted into the culture medium from which it can be separated from the host cells by centrifugation, filtration or sedimentation and thus can be used for protein purification without complex cell disruption processes can, which can be carried out using methods known to those skilled in the art.
- the Activation of plasminogen to plasmin is solved by proteases that are able to process plasminogen to catalytically active plasmin.
- Recombinant production method means that a peptide or a protein from a nucleic acid sequence, preferably a DNA sequence, is expressed by a suitable host organism, the nucleic acid sequence resulting from the cloning and fusion of individual nucleic acid segments.
- the “functional plasminogen peptide part” is to be understood as the part of the plasminogen or plasminogen peptide which can perform the biologically relevant functions of the plasminogen. These biologically relevant functions are at least the ability to activate plasmin by plasminogen activators such as twe plasminogen activator, urokinase , vampire-bat plasminogen activator, streptokinase, stapyhlokinase, Pia protein from Yersinia pestis etc., and the proteolytic activity, which is characterized by the hydrolysis of fibrin. Under the term "plasminogen activator (s)" used in the description and the examples both proteolytic and non-proteolytic plasminogen activators are understood.
- glu-plasminogen the processability to lys-plasminogen is also to be understood by the plasmin-catalyzed cleavage of the preactivation peptide.
- the biological functions also include the fact that plasminogen can be activated up to a factor of 1000 after binding to fibrin, laminin, fibronectin, vitronectin, heparan sulfate proteoglucan, type 4 collagen and other substrates.
- plasmin Among the biologically relevant functions of plasmin, which must be ensured after processing the plasminogen, are the degradation of laminin, the degradation of fibronectin, of vitronectin, of heparan sulfate proteoglucan, the activation of ProCoUagenases, the activation of Promatrix metalloproteases, the activation of To understand latent macrophages elastase, prohormones and growth factors such as TGFß-1 (latent transforming growth factor), VEGF (vascular endothelial growth factor) or bFGF (basic f ⁇ broblast growth factor).
- TGFß-1 latent transforming growth factor
- VEGF vascular endothelial growth factor
- bFGF basic f ⁇ broblast growth factor
- Another biological function is the ability to be inhibited by plasmin inhibitors such as ⁇ 2-antiplasmin and ⁇ 2-macroglobulin.
- the biologically relevant functions include binding to fibrin, laminin, fibronectin, vitronectin, heparan sulfate proteoglucan and type 4 collagen, binding to receptors such as, for example, ⁇ -enolase, Annexin II or amphoterin.
- Plasminogen is initially formed as an inactive glu-plasminogen.
- This glu-plasminogen can be converted from plasmin into Lys-plasminogen by splitting off the so-called preactivation peptide.
- tissue plasminogen activators in this case only by the above-mentioned proteolytic activators
- proteolytic cleavage into plasmin which consists of subunits connected via sulfide bridges.
- the smaller subunit contains the proteolytic domain and the phosphorylation site, the larger subunit carries the three glycosylations and is responsible for binding to fibrin. Furthermore, the glycosylations are important for stability in the plasma.
- plasminogen can additionally be converted into a proteolytically active enzyme which is able to process plasminogen into plasmin.
- Functional plasminogen is therefore plasminogen, which can be processed into proteolytically active plasmin by plasminogen activators. Furthermore, functional plasminogen preferably contains the fibrin-binding domain and can preferably contain at least one of the three glycosylations.
- plasminogen The smallest forms of functional plasminogen are micro and mini plasminogen, a larger form lys plasminogen.
- Glu-plasminogen which still contains the preactivation peptide, is also functional plasminogen.
- regions, in particular within the larger chain, can be omitted without significantly impairing the above-mentioned functionality (including proteolysis, fibrin binding).
- plasminogen derivatives which contain a functional catalytic domain.
- plasminogen derivatives functionally, as already described, means that the plasminogen variant has proteolytic activity after activation with plasminogen activators such as streptokinase or urokinase.
- the catalytic domain can contain deletions and amino acid exchanges or can be fused with other amino acids or peptides or proteins.
- the large domain can contain all intermediates from Glu20 to Arg580 (based on the sequence of the pre-plasminogen) which can be activated with plasminogen activators to form active plasmin.
- Lys plasminogen As a concrete example, three forms of Lys plasminogen are mentioned:
- Variant 1 N-terminal amino acid: Met88 Variant 2: N-terminal amino acid: Lys97 Variant 3: N-terminal amino acid: Val98
- the plasminogen derivatives are preferably a number of 1 to 50 amino acids shorter or longer than the corresponding micro, mini, Lys or Glu plasminogen or preferably have an exchange of 1 to 10 amino acids, these derivatives furthermore having the property to be activated by plasminogen activators.
- sequence homology sequence agreement
- sequence homology of over 80%, preferably over 85%, more preferably over 90%, further preferably over 95% , particularly preferably of over 98% and furthermore particularly preferably of over 99%.
- the catalytic domain can contain at least one deletion and / or at least one amino acid exchange and / or be fused with at least one further amino acid or at least one further peptide or at least one further protein.
- the large domain can contain all intermediates from Glu20 to Arg580 (based on the sequence of the pre-plasminogen), which can be activated with plasminogen activators to active plasmin.
- a plasminogen derivative has an amino acid sequence homology (match) of preferably over 80%, further preferably over 85%, further preferably over 90%, particularly preferably over 95% and further particularly preferably over 99%.
- Microorganism encompasses all those life forms which have only small dimensions. Both eukaryotic and prokaryotic microorganisms are to be included. Bacteria, yeasts, fungi and viruses should be mentioned in particular. “Nucleic acid” is intended to encompass both DNA and RNA, both in all conceivable configurations, for example in the form of double-stranded nucleic acid, in the form of single-stranded nucleic acid, combinations thereof, and linear or circular nucleic acids.
- “Signal sequence” is understood to mean a peptide sequence which is able to ensure the transport of a further peptide sequence into or across a membrane, for example into the endoplasmic reticulum. This can be, for example, a prepropeptide, a prepeptide or a propeptide.
- Interface denotes those sites in a peptide sequence which make it possible to split off a signal sequence, a prepropeptide or propeptide from the further peptide sequence or generally to split a peptide sequence into two parts in a host organism.
- a “nucleic acid coding for at least one signal peptide or a prepropeptide” is a nucleic acid sequence which codes for a peptide or a protein structure which enables the further polypeptide to be introduced into membranes, for example into the endoplasmic reticulum.
- a primer oligonucleotide is referred to as "primer”.
- primer By this we mean short-chain, single-stranded oligoribo or deoxyribo nucleotides which are complementary to a region on a single-stranded nucleic acid molecule and can hybridize with it to form a double strand.
- the free 3'- The hydroxyl end in this double strand serves as a substrate for DNA polymerases and as a starting point for the polymerization reaction of the entire single strand to form the double strand.
- the primers are used in particular for PCR, ie the polymerase chain reaction known to the person skilled in the art.
- Plasmid denotes the nucleic acid molecules which are present in many prokaryotic and some eukaryotic microorganisms and are not integrated into the chromosome and have a length of approximately 2 kb to more than 200 kb.
- Ligase is the term for the connection of the ends of two nucleic acid molecules with the aid of a ligase or in the context of a self-ligation, ie by an intramolecular ring closure reaction, in which the two single-stranded ends of a linear DNA molecule join together, provided that their ends are together Can form base pairs.
- Restriction endonuclease is the name for a class of bacterial enzymes that cleave phosphodiester bonds in both strands of a DNA molecule within specific base sequences.
- Electrical pulses are a method for introducing nucleic acids into cells. The cell membranes of the exponentially growing recipient cells in suspension are made permeable to high molecular weight molecules by short electrical pulses of high field strength while being exposed to the nucleic acid solution.
- “Overexpression” is understood to mean an increased production of functional plasminogen by a cell in comparison to a production by the wild type of this cell. In general, one speaks of an overexpression when the expressed foreign gene in the case of intracellular production accounts for about 1-40% of the total cellular protein of the host cell.
- Expression vector is to be understood as those vectors which, after introduction into a suitable host cell, allow the transcription of the foreign gene cloned into the vector and the subsequent translation of the mRNA (messenger RNA) formed.
- Expression vectors generally contain those for the expression of genes control signals required in cells of prokaryotes or eukaryotes.
- B. Pichia pastoris are preferred in the present invention by methanol inducible promoters such.
- the constitutive GAP promoter is particularly preferred.
- AOX1 is a gene of alcohol oxidase 1 from P. pastoris
- GAP is a gene of glyceraldehyde-3-phosphate dehydrogenase from P. pastoris and
- YPT1 is a gene of a GTP binding protein from P. pastoris.
- the signal peptides of the proteins encoded by the genes PHO-1, SUC-2, PHA-E or alpha-MF are often used for secretory production in yeasts.
- PHO1 is a gene of the acidic phosphatase from P. pastoris
- SUC-2 is a gene of the secretory invertase from S. cerevisiae
- PHA-E is a gene of the acid phosphatase from Phaseolus vulgaris Agglutinis.
- Alpha-MF is a gene of the alpha-mating factor from S. cerevisiaea.
- the codons for the interfaces of proteases and codons for the interfaces for splitting off the propeptide for the protease Kex 2 or the protease Ste 13 are particularly preferred.
- the link in step a) above is particularly preferably carried out with codons which are for a Kex 2 interface and additionally code two Ste 13 interfaces. In a preferred embodiment of the present invention, this is for the signal peptide or Prepropeptide-encoding nucleic acid molecule from yeast, in particular the yeast Saccharomyces cerevisiae.
- a still more preferred embodiment is directed to a nucleic acid molecule coding for the signal peptide or the prepropeptide, which encodes the signal peptide or prepropeptide of the ⁇ -factor of the yeast Saccharomyces cerevisiae.
- the resulting fusion product described in step a) above is preferably amplified by PCR and then further preferably purified.
- WO02 / 50290 discloses the recombinant production of mini and microplasminogen with the expression vector pPICZ ⁇ AD D which contains the inducible AOX1 promoter and the prepropeptide of the yeast alpha factor and is suitable for yeast. These smaller variants of plasminogen either have none at all (like microplasminogen) or only a Kringle domain (like mini plasminogen).
- the expression vector pPICZ ⁇ AD contains the interfaces for the proteases Kex2 and Stel3.
- a number of promoters are known for inducible expression systems in yeast. These include the AOXl promoter, AOX2, CUP1 (Koller A, Valesco J, Subramani S., Yeast 2000: 16 (7), 651-6), PHO1 (EP0495208), HIS4 (US 4885242), FLD1 (Shen et al., Gene 1998: 216 (1), 93-10) and the XYLl promoter (Den Haan and Van Zyl, Appl. Microbiol. Biotechnol. 2001: 57 (4), 521-7).
- heterologous protein production can be controlled and a homogeneous biomass can be achieved.
- the host organisms Before the expression of the foreign protein is induced, the host organisms can achieve a high growth density without any selection disadvantages that would arise from the expression of a foreign protein.
- the glu and Lys plasminogen recombinantly produced in the present invention contain all five Kringle domains, making their recombinant production difficult for the following reasons makes:
- the production of glu or Lys plasminogen has not been disclosed in WO02 / 50290.
- the recombinant protein contains a signal peptide, a Kex2 and at least one Stel3, preferably two Stel3, protease cleavage sites.
- a glycerol feed between 0.1 and 10 ml / h, preferably between 0.5 and 5 ml / h, more preferably between 0.8 and 1.5 ml / h, was carried out as a further C source and the culture medium buffered to neutral pH of 7.0. Care was taken to ensure sufficient oxygen input.
- a constitutive promoter was used, not an inducible one. Constitutive promoters that are active and can be used in yeast are the GAP promoter, the YPT1 promoter (Sears et al., Yeast 1998: 14 (8), 783-90), the TKL promoter (Den Haan and Van Zyl, Appl. Microbiol. Biotechnol.
- Preferred promoters are the GAP promoter and the YPTI promoter.
- a particularly preferred promoter is the GAP promoter.
- a constitutive promoter In contrast to an inducible promoter, a constitutive promoter has the disadvantage that the foreign protein to be expressed is produced constructively, that is to say during the entire wax phase. This creates disadvantages for the host cell, which u. a. expresses in a slower growth. Because of the prevailing selection pressure, host cells that have lost the recombinant expression cassette have an advantage and can overgrow the recombinant host cells. This can result in a heterogeneous mixed population that should be avoided. Surprisingly, however, it was found that the constitutive GAP promoter according to a preferred embodiment of the present invention enables a higher yield.
- a constitutive promoter e.g. B. the GAP promoter is operatively linked to a nucleic acid which codes for at least the functional part of the plasminogen sequence, and which is fused to a nucleic acid sequence which codes for at least one signal peptide, the nucleic acid sequence coding for the functional plasminogen and for at least the nucleic acid sequence encoding the signal peptide is linked to codons for interfaces of proteases which ensure the cleavage of the signal peptide.
- a constitutive promoter e.g. B. the GAP promoter with the nucleic acid sequence of the micro, mini, Lys or Glu plasminogen operatively linked, which is fused with the nucleic acid sequence of a signal peptide from the yeast.
- the constitutive GAP promoter according to a preferred embodiment of the present invention enables an approximately 10-fold higher yield (see Example 7c, production of Lys-Plasminogen, 1375 U / 1, which corresponds to 125 mg / 1 results).
- a glycerol feed between 0.1 and 10 ml / h, preferably between 0.5 and 5 ml / h, more preferably between 0.8 and 1.5 ml / h, is carried out as a further C source and the culture medium buffered to neutral pH of 7.0.
- the growth rate ⁇ [1 / h] reaches values between 0.002 and 0.10, preferably between 0.004 and 0.020, more preferably between 0.008 and 0.010.
- lys plasminogen of at least 660 U / 1 (60 mg / 1), preferably 1000 U / 1 ( ⁇ 91 mg / 1), preferably 1500 U / 1 ( ⁇ 136 mg / 1) , more preferably 2000 U / 1 ( ⁇ 182 mg / ml), preferably 2500 U / 1 ( ⁇ 227 mg / 1), particularly preferably and further particularly preferably 2750 U / 1 ( ⁇ 250 mg / 1) after a fermentation time of 250 Received hours.
- mini and microplasminogen In the recombinant production of mini and microplasminogen, correspondingly higher yields were obtained.
- the yields of miniplasminogen are between 100 mg to 2 g per liter, preferably from 300 mg / 1 to 1.5 g / 1, more preferably from 400 mg / 1 to 1 g / 1 and more preferably from 500 mg / 1 to 800 mg / 1 and particularly preferably from 600 to 700 mg / 1.
- the yields of microplasminogen are also at least 10% higher than that of miniplasminogen.
- the recombinant production of glu-plasminogen yielded slightly poorer yields in comparison to lys-plasminogen.
- the method according to the invention is suitable for the production of mini, micro, Lys and glu plasminogen.
- Preferred embodiments are therefore directed to the recombinant Production of mini, micro, Lys and Glu plasminogen, which are each coupled to a signal or prepro sequence, in an expression vector which contains a consumer promoter, e.g. B. contains the GAP promoter.
- the signal sequence consists of the signal peptide or prepropeptide of the alpha factor of the yeast Saccharomyces cerevisiae.
- a constitutive promoter e.g. B. the GAP promoter, operatively with a nucleic acid of the sequences Seq. ID. No. 7 or 9 or one of the sequences Seq. ID. No. 13 or 15 or one of the sequences Seq. ID. Nos. 50 to 59 linked and expressed in a suitable expression vector.
- a constitutive promoter e.g. B. the GAP promoter is operatively linked to a nucleic acid which codes for at least the functional part of the plasminogen sequence.
- a constitutive promoter e.g. B. the GAP promoter, operatively with a nucleic acid of the sequences Seq. ID. Nos. 13, 15, 7 and 9 or one of the sequences Seq. ID. No. 50 to 59 or the sequence Seq. ID. No. 11 linked and expressed in a suitable expression vector
- 7,121 isoelectric point at pH 7.0: 1,351 glycosylation sites: O-268, N-308, O-365 (the numbering refers to the 810 AS-long pre-plasminogen)
- Lys plasminogen (data calculated using the EditSeq TM (DNASTAR) program) Molecular weight: 79655.71 Daltons 714 amino acids
- the fusion product formed in step a) of the present invention can also be inserted into an expression vector suitable for microorganisms.
- This expression vector is preferably selected from the group comprising pPICZ ⁇ A, B and C and pPICZ A, B and C and pGAPZ ⁇ A, B and C and pGAPZA, B and C and pPIC6 ⁇ A, B and C and pPIC6A, B and C and pAO815, pPIC3 , 5K and pPIC9K.
- the introduction into the expression vector is again preferably carried out by ligation.
- the PCR product and the expression vector are preferably cut with the restriction endonucleases Kspl and Xh ⁇ i before they are ligated with a T4 DNA ligase.
- the ligated nucleic acid can be transformed into a microorganism, preferably E. coli, by electroporation and the DNA can be isolated from the transformed strains thus obtained and separated by endonucleolytic cleavage, preferably with Xhol or Sful and Kspl.
- the nucleic acid obtained in this way can be a plasmid, preferably selected from the group pMHS476.1, pSM54.2, pSM49.8, pSM82.1, pSM58.1, pAC37.1, pJW9.1, pPLGl.l, pPLG2.1, pPLG3.2, pPLG4.2, pPLG5.3, pPLG6.1, pPLG7.1, pPLG8.3, pPLG9.1, pPLGlO.l, pPLG11.2, pPLG12.1, pPLG13.1, pPLG14.2, pPLG15.
- Two oligonucleotide primers selected from the group comprising N034 (Sequence ID number 1), N036 (Sequence ID number 2), N036a (Sequence ID number 19), N036b (sequence) are preferably used as primers for the above-mentioned amplification -ID- number 20), N036c (sequence ID number 21), N036d (sequence ID number 22), N036e (sequence ID number 23), N036f (sequence ID number 24), N036g (sequence -ID number 25), N036h (Sequence ID number 26), N036i (Sequence ID number 27), N036j (Sequence ID number 28), N057 (Sequence ID number 3), N037 (Sequence ID -
- Codons which code for the protease Kex2 and the protease Stel3 and the plasminogen fusion protein which has the amino acid sequence shown in Sequence ID number 10 or 16.
- the above-mentioned plasmid which is preferably selected from the above-mentioned group, is transformed into a microbial host.
- the transformation can be carried out, for example, by electroporation.
- the microorganism used is preferably a eukaryotic microorganism which belongs to the department of fungi.
- Preferred microorganisms belong to the Ascomycota, preferably Saccharomycotina and thereof preferably the class of the Saccharomycetes, more preferably the order of the Saccharomycetales, more preferably the family of the Saccharomycetaceae and particularly preferably the genera Pichia, Saccharomyces, Hansenula and Aspergillus.
- the nucleic acid sequence coding for at least the functional part of the plasminogen is overexpressed from a microbial host organism transformed with the fusion product formed in step a) described above, and at least the functional part of plasminogen is secreted, preferably in the culture medium is secreted.
- the functional part of the nucleic acid sequence of plasminogen is one of the sequences ID number 60, 61, 62, 63, 64, 65 or 66.
- the functional part of the nucleic acid sequence of plasminogen corresponds to the complete plasminogen sequence.
- a human functional plasminogen is preferably produced using the recombinant production method according to the present invention.
- This plasminogen which is obtainable by the recombinant production process according to the present invention, or the plasmin resulting therefrom by the action of proteases, can be used to produce a medicament for the treatment of wounds, in particular for the treatment of slow or poorly healing wounds, for the treatment of thrombotic events , or for the prevention of thrombotic events.
- the plasminogen produced according to the invention and the plasmin obtained therefrom have anti-coagulative properties. These advantageous properties also make it possible to use the plasminogen and / or plasmin as anti-thrombotic and anti-coagulant active ingredients for the prophylaxis and / or treatment of Heart attack, thrombosis, restenosis, hypoxia, ischemia, coagulation necrosis, inflammation of the blood vessels and for treatment after a heart attack, after bypass surgery, after angioplasty and after balloon dilatation.
- the plasminogen can also be used for thrombolytic therapy in acute myocardial infarction, for recanalizing arteriovenous shunts and for reopening (reperfusion) of closed coronary arteries in acute myocardial infarction.
- plasminogen produced according to the invention include the prophylaxis and treatment of acute pulmonary embolism, of fresh or older clots in the case of venous thrombosis, acute and subacute arterial thrombosis, venous thrombosis, acute arterial occlusion of the extremities, chronic occlusive arteriopathy, thrombosis of arteriovenous thrombosis and the extremities, early thrombosis in the area of the obliterated vessels, acute central vascular occlusion on the eye, conjunctivitis with plasminogen type I deficiency, burns and frostbite, burns and disseminated intravascular coagulation in shock.
- Plasminogen and / or plasmin are preferably used for these indications together with an anticoagulant.
- Heparin, heparin derivatives or acetylsalicylic acid are suitable as anticoagulants.
- the present invention is therefore also directed to pharmaceutical compositions comprising a plasminogen which has been prepared according to the recombinant production process of the present invention, or the resulting plasmin, optionally in combination with a pharmaceutically acceptable carrier, additive and / or solvent.
- the pharmaceutical compositions can preferably contain an anticoagulant active ingredient, in particular heparin, heparin derivatives or acetylsalicylic acid.
- the plasminogen produced according to the invention and / or the plasmin obtained therefrom are preferably used in the external wound treatment in pharmaceutical compositions which are suitable for topical use.
- Plasminogen and / or plasmin are used in a concentration of 0.01-500 U per gram of pharmaceutical composition, preferably 0.1-500 U, more preferably 0.1-250 U, further preferably 0.5-250 U per gram pharmaceutical composition and particularly preferably used in a concentration of 1 - 150 U plasminogen and / or plasmin per gram of pharmaceutical composition.
- Preparations in the form of, for example, ointments, pastes, gels, etc. plasters or other dressing materials, the concentration ranges given above per 2 cm plaster surface or surface of the dressing material apply.
- the pharmaceutical compositions according to the invention are produced in a known manner with the customary solid or liquid carriers or diluents and the commonly used pharmaceutical adjuvants according to the desired type of application in a suitable dosage.
- the preferred pharmaceutical formulations or preparations are in a dosage form which is suitable for topical external application.
- Such dosage forms are, for example, ointments, pastes, gels, films, dispersions, emulsions, suspensions or special formulations, such as, for example, nanodisperse systems in the form of liposomes, nanoemulsions or lipid nanoparticles, and also surfactant-free formulations, polymer-stabilized or solids-stabilized emulsions.
- compositions for the prophylaxis and / or treatment of heart attack thrombosis, restenosis, hypoxia, ischemia, coagulation necrosis, inflammation of the blood vessels, acute myocardial infarction and for treatment after a heart attack, after a bypass operation, after an angioplasty and after
- parenteral administration are suitable for balloon dilation.
- compositions are suitable for various systemic applications, including use for acute pulmonary embolism, thrombolytic therapy for acute myocardial infarction, fish or older clots for venous thrombosis, acute and subacute arterial thrombosis, recanalization of arteriovenous shunts, venous thrombosis, reopening (reperfusion arteries) of closed coronary artery acute heart attack, acute arterial occlusion of the extremities, chronic occlusive arteriopathies, thrombosis of arteriovenous shunts, deep vein thrombosis of the pelvis and extremities, early thrombosis in the area of desobliterated vessels, acute central vascular occlusion on the eye, conjunctivitis with plasminogen and type I deficiency, burns or disseminated intravascular coagulation in shock.
- acute pulmonary embolism thrombolytic therapy for acute myocardial infarction, fish or older clot
- plasminogen deficiency such as. B. acquired or congenital plasminogen deficiency (homozygous type I plasminogen deficiency)
- the z. B. can lead to conjunctivitis lignosa or thrombophilia.
- intravenous administration of the recombinant plasminogen including the forms of glu, lys, mini and microplasminogen, as well as of these derived variants to treat the disease.
- the recombinantly produced plasminogen may be used together with the plasmin obtained therefrom or also only plasmin in pharmaceutical compositions which are used for the prophylaxis and / or treatment of acute pulmonary embolism, thrombolytic therapy for acute myocardial infarction, fresh or older clots for venous thrombosis, acute and subacute arterial Thrombosis, recanalization of arteriovenous shunts, venous thrombosis, reopening (reperfusion) of closed coronary arteries in acute myocardial infarction, acute arterial occlusion of the extremities, chronic occlusive arteriopathies, thrombosis of arteriovenous shunts, deep vein thrombosis of the pelvic area and central vein occlusion, amniotic and occlusive areas Eye, conjunctivitis with plasminogen type I deficiency, burns, burns and frostbite, dissemin
- the plasminogen produced recombinantly according to the invention is preferably used in pharmaceutical compositions which are suitable for the topical treatment of burns, frostbite, burns, injuries and / or wounds, in particular poorly healing wounds.
- the recombinant plasminogen is preferably used together with at least one activator (plasminogen activators such as urokinase or streptokinase).
- activator plasminogen activators such as urokinase or streptokinase
- Another preferred possibility consists in converting the plasminogen produced according to the invention in whole or in part by means of an activator into plasmin and using it as plasmin or plasmin with plasminogen in the indications and formulations described herein.
- Intravenous, intravascular, intraperitoneal, subcutaneous and intramuscular administration are considered as parenteral applications.
- the protein in particular in the form of solutions for injection or infusion, is used in a concentration of 0.1-100 million units, preferably 10 to 100 million units per 10 ml solution, further preferably 1 to 10 million units per 10 ml solution and particularly preferably 3 to 5 million units per 10 ml of solution.
- the protein in formulations suitable for oral administration, is in a concentration of 0.1 to 100,000 units per gram of formulation, preferably 100 to 80,000 units per gram of formulation and particularly preferably 1,000 to 50,000 units per gram of formulation.
- compositions for example, protease-containing plasters, bandages or other dressing materials. These formulations are particularly suitable for topical use in wound treatment or for the treatment of burns, frostbite, burns and / or injuries.
- the plasminogen produced recombinantly according to the invention is preferably used in the pharmaceutical compositions, in particular the wound healing agents, plasters and bandaging materials, together with at least one activator (plasminogen activators such as urokinase or streptokinase) or previously converted into plasmin using the activators described above and possibly together with as plasmin Plasminogen and possibly used with at least one activator in and / or on the pharmaceutical compositions and formulations.
- activator plasminogen activators such as urokinase or streptokinase
- plasminogen preferably plasminogen with an activator, or plasmin or plasmin together with plasminogen and an activator in and / or on plasters and dressing materials which are used for wound treatment, in particular for treating poorly healing wounds, and for treating burns, Frostbite, burns or other injuries are suitable.
- the dressing materials, wound dressings or plasters contain the plasminogen produced according to the invention and / or plasmin obtained therefrom in a concentration of 0.01
- 500 units of plasminogen and / or plasmin per cm 2 of the pharmaceutical formulation preferably 0.1 to 500 units of plasminogen and / or plasmin per cm 2 of dressing material or plaster.
- the pasminogen and / or plasmin is further preferred in a concentration of 0.1-250 units, further preferably 0.5-250 units and particularly preferably 1
- urokinase Between 100 ⁇ g and 1 ng urokinase are used for the activation of 1 mg plasminogen, preferably between 10 ⁇ g and 10ng urokinase. Between 1 mg and 1 ⁇ g streptokinase are used for the activation of 1 mg plasminogen, preferably between 300 ⁇ g and 3 ⁇ g streptokinase are used. Between 100 ⁇ g and 10 ng protease from S. griseus are used for the activation of 1 mg plasminogen, preferably between 10 ⁇ g and 100 ng protease from S. griseus are used.
- protease VIII are used for the activation of 1 mg plasminogen, preferably between 10 ⁇ g and 100 ng protease VIII.
- the nucleic acid sequence coding for the functional part of the plasminogen is preferably a DNA sequence.
- the present invention also relates to the following plasmids:
- Plasmid pSM54.2 (accession number: DSM 14682)
- Plasmid ⁇ SM82.1 (deposit number: DSM 14679)
- Plasmid ⁇ SM58.1 (deposit number: DSM 14680)
- Plasmid ⁇ AC37.1 (deposit number: DSM 15369)
- Plasmid pJW9.1 (accession number: DSM 15368).
- the present invention relates to a DNA sequence suitable for expression, which comprises at least the nucleic acid sequence coding for the functional part of plasminogen, obtainable by the recombinant production method according to the present invention. It also affects the microbial host organism, which Fusion product obtained in step a) described above and a nucleic acid sequence derived therefrom.
- the present invention further relates to a vector, a DNA molecule or an RNA molecule which comprises the fusion product obtained in step a) described above or a nucleic acid sequence derived therefrom.
- the present invention also relates to a screening method for the identification of plasminogen activators, in particular plasminogen-activating proteases, the functional plasminogen, produced according to the recombinant production method described above, being used.
- the resulting piasmin activity is preferably measured after preincubation of the proteases with the functional plasminogen, as produced according to the present invention.
- the resulting piasmin activity can be measured with a synthetic peptide substrate.
- the resulting piasmin activity is particularly preferably measured with N-tosyl-Gly-Pro-Lys-pNA.
- Fig. 1 Physical map of the plasmid pMHS476.1 (5682 bp).
- the gene of the prepropeptide of the alpha factor is linked to the human Lys plasminogen gene by the codons for a Kex2 interface and is under the control of the AOX1 promoter.
- Fig. 2 Physical map of the plasmid pSM54.2 (5694 bp).
- the gene of the prepropeptide of the alpha factor is linked to the human Lys plasminogen gene by the codons for a Kex2 interface and two Stel3 interfaces and is under the control of the AOX1 promoter.
- Fig. 3 Physical map of the plasmid pSM49.8 (5715 bp).
- the human preplasminogen gene is under the control of the AOXl promoter.
- Fig. 4 Physical map of plasmid pSM82.1 (5913 bp).
- the gene of the prepropeptide of the alpha factor is linked to the human Lys plasminogen gene by the codons for a Kex2 interface and is under the control of the AOX1 promoter.
- Fig. 5 Physical map of plasmid pSM58.1 (5925 bp).
- the gene of the prepropeptide of the alpha factor is linked to the human glu-plasminogen gene by the codons for a Kex2 site and two Stel3 sites and is under the control of the AOX1 promoter.
- Fig. 6 Physical map of plasmid pAC37.1 (11400 bp).
- the gene of the prepropeptide of the alpha factor is linked to the human Lys plasminogen gene by the codons for a Kex2 interface and two Stel3 interfaces and is under the control of the AOX1 promoter.
- Fig. 7 Physical map of plasmid pJW9.1 (5925 bp).
- the gene of the prepropeptide of the alpha factor is linked to the human Lys plasminogen gene by the codons for a Kex2 site and two Stel3 sites and is under the control of the GAP promoter.
- Fig. 8 Physical map of the plasmid pPLGl.l.
- the gene of the prepropeptide of the alpha factor is linked to the human mini-plasminogen gene by the codons for a Kex2 interface and two Stel3 interfaces and is under the control of the AOX1 promoter.
- Fig. 9 Physical map of the plasmid pPLGl 1.2.
- the prepropeptide of the alpha factor is linked to the human mini-plasminogen gene by the codons for a Kex2 site and two Stel3 sites and is under the control of the GAP promoter.
- Fig. 10 Detection of fibrinolysis activity in the clarification yard assay.
- microorganisms which are capable of carrying out the glycosylation and, if desired, the secretion of proteins are suitable as host organisms.
- host organisms examples include: S. cerevisiae, P. pastoris, P. methanolica and H. polymorpha or the filamentous fungus Aspergillus sp.
- the functional plasminogen or plasmin produced according to the present production method in a pharmaceutical formulation is possible.
- the functional plasminogen can be mixed with a pharmaceutically acceptable carrier or auxiliary as well as other suitable hoofs or additives in a manner known to those skilled in the art.
- the Kex2 interface ensures that the propeptide is split off by the Kex2 protease located in the Golgi apparatus.
- This protease also called protease YscF or kexin, is a proprotein-processing serine protease that cuts C-terminally from basic amino acid pairs (for example: Lys-Arg).
- the Stel3 interface ensures that the propeptide is split off by the protease Stel3 located in the Golgi apparatus.
- Stel3 also called protease YscVI or Dipeptidylaminopeptidase A
- protease YscVI Dipeptidylaminopeptidase A
- interfaces for the proteases Kex2 and Ste 13 In addition to the interfaces for the proteases Kex2 and Ste 13, further interfaces can be inserted which are recognized as a substrate by proteases located in the endoplasmic reticulum or in the Golgi device.
- the propeptide e.g. B. the mating factor of yeast S. cerevisiae is not absolutely necessary.
- pPICZA, B and C are 3.3 kb Pichia pastoris expression vectors.
- the vectors carry a Zeocin resistance gene for the direct selection of Ptc ⁇ t transformants.
- the vectors also carry a C-terminal tag sequence, which enables rapid purification and the detection of fusion proteins.
- PPICZalpha A, B and C are 3.6 kb Pichia pastoris expression vectors which also carry the Zeocin resistance gene and the above-mentioned C-terminal tag sequence. They also contain the alpha-factor secretion signal from Saccharomyces cerevisiae for an efficient transport of proteins into the medium.
- the plasminogen can also be activated.
- the plasminogen can be incubated, for example, with a protease that was identified using the screening method according to the invention.
- the plasminogen is preferably incubated with protease from S. griseus, with protease VIII or protease XVIII, with ficin, metalloendopeptidase, clostripain, with endoproteinase Glu-C, protease XIII, proteinase A, trypsin, endoproteinase Asp-N or elastase. It is also conceivable to activate plasminogen by incubating plasminogen with one of the proteases t-PA, u-PA, or vb-PA (vampire bat PA).
- the plasminogen is activated by incubating it with staphylokinase or with streptokinase. Streptokinase or staphylokinase form a 1: 1 complex with plasminogen. As a result of this complex formation, the plasminogen bound in the complex undergoes a conformational change, so that it becomes proteolytically active and is able to activate plasminogen to plasmin.
- the functional plasminogen or activated functional plasmin produced according to the present recombinant manufacturing process is capable of hydrolyzing fibrin. It is also able to activate pro-matrix metalloproteases and growth factors.
- Example la Amplification of the Lys plasminogen gene with incorporation of the codons for a Kex2 interface at the 5 'end
- the plasmid pPLGKG (Forsgren et al, FEBS Lett. 1987 Mar 23; 213 (2): 254-60 (2)), which contains the gene for pre-glu-plasminogen, was derived from the strain E. coli HB101 (pPLGKG) isolated using the QIAGEN Plasmid Midi-Kit (QIAGEN, Hilden). 150 ng of pPLGKG-DNA were linearized with 10 U of the restriction endonuclease EcoRI (Röche, Mannheim) and then purified with the QIAquick PCR-Purification Kit (QIAGEN, Hilden). The oligonucleotide-primer pair N034 (Seq. ID No. 1) and N036 (Seq.
- the oligonucleotide primer N036 bears the codons for the Kex2 interface.
- 0.5 UJ DNA polymerase Hybaid, Heidelberg
- 400 nM each of the oligonucleotide primers 200 ⁇ M dNTP, 3 ng linearized pPLGKG-DNA and the associated reaction buffer were used in a final volume of 50 ⁇ l.
- the primer binding temperature was 58 ° C.
- the resulting PCR product was examined for the expected size by agarose gel electrophoresis and purified using the QIAquick PCR Purification Kit.
- the DNA of the ligating ring approach was then purified using the QIAquick PCR purification kit and used to transform E. coli JM109 by electroporation.
- E. coli JM109 cells were incubated for 1 h at 37 ° C. in 1 ml SOC medium, then plated on LB agar solid medium with 20 ⁇ g / ⁇ l zeocin (Invitrogen, Groningen, Netherlands) and overnight at 37 ° C incubated.
- the DNA was isolated from one of the E. co / z strains thus obtained using the QIAGEN Plasmid Mini-Kit (QIAGEN, Hilden) and separated 300 ng after endonucleolytic cleavage with the enzymes Xhol and Kspl by agarose gel electrophoresis.
- the isolated plasmid contained a fragment of the expected size and was named pMHS476.1 (Fig. 1).
- the correct sequence of the fusion gene from the prepropeptide gene of the alpha factor of the yeast Saccharomyces cerevisiae and the Lys plasminogen gene and the codons for the interface sequence of the protease Kex2 was confirmed by sequence analysis (Seq. ID No. 7).
- plasmid DNA of the plasminogen expression vector pMHS476.1 was isolated from the strain E. coli JM109 (pMHS476.1). 10 ⁇ g of pMHS476.1 DNA were linearized with 100 U Pmel (New England Biolabs, Frankfurt) and according to the protocol for electroporation of Pichia pastoris KM71H his 4 :: HIS 4 arg 4 aoxl :: reproduced in the EasySelect TM Pichia Expression Kit Instruction Manual. ARG 4 genotype from Pichia pastoris Y-11430 (Northern Regional Research Laboratories, Peoria, USA) was used.
- BMGY medium EasySelect TM Pichia Expression Kit Instruction Manual
- 100 ml of BMGY medium EasySelect TM Pichia Expression Kit Instruction Manual
- the precultures were then centrifuged at 4645 g and 4 ° C. for 10 min.
- the cells harvested in this way were resuspended in BMMY medium (0.5% methanol) in order to obtain a biofum concentration of 80 g / l.
- 60 ml of these main cultures were incubated in 300 ml baffle flasks at 28 ° C and 250 rpm for 118 h. After 24 and 72 hours, 2% methanol was added.
- the baffle flask and the high speed of 250 rpm were used to ensure sufficient oxygen entry, which is necessary when using the AOX promoter.
- Example le Measurement of the plasminogen activity in the supernatant of the main cultures after activation with streptokinase
- the main culture samples were centrifuged at 16,000 g for 10 min. 300 ⁇ l of the supernatant were incubated for 20 min at 37 ° C. with 1 ⁇ l streptokinase (S8026) (Sigma, Deisenhofen). To 750 ⁇ l 100 mM sodium phosphate buffer pH 8, 0.36 mM CaCl 2 , 0.9% NaCl was added 100 ⁇ l N-tosyl-Gly-Pro-Lys-pNA solution (9.5 mg dissolved in 75 mg glycine / 10 ml, 2% Tween® 20) pipetted and incubated at 37 ° C for 10 min.
- S8026 streptokinase
- Example 2a Amplification of the Lys plasminogen gene with incorporation of the codons of a Kex2 interface and two Stel3 interfaces at the 5 'end
- the amplification of the Lys plasminogen gene for cloning into the vector pPICZ ⁇ A with incorporation of the codons for a Kex2 interface and two Stel3 interfaces was carried out with the two oligonucleotide primers N034 and N057 (Seq. ID No. 3) using the in Example la conditions described performed.
- the oligonucleotide primer N057 carries in addition to the bases complementary to the plasminogen gene, the codons for the Kex2 interface and the Ste 13 interfaces.
- Example 2b Cloning of the Lys plasminogen gene amplified as described in Example 2a into the vector pPICZ ⁇ A
- the cloning of the Lys plasminogen gene into the vector pPICZ ⁇ A for the production of a fusion gene from the gene of the prepropeptide of the alpha factor of the yeast S. cerevisiae and the human plasminogen gene with incorporation of the codons for the interfaces of the proteases Kex2 and Stel3 was analogous to the cloning described in Example 1b.
- the plasmid obtained was designated pSM54.2 (Fig.2).
- the correct sequence (Seq. ID No. 9) was confirmed by sequence analysis.
- Pichia pastoris KM71H was transformed with the plasmid pSM54.2.
- the colonies obtained were referred to as Pichia pastoris KM71H / pSM54.2-l / a, where “a” in turn stands for the consecutive numbering of the colonies starting with 1.
- Example 2d Cultivation of Pichia pastoris KM71H / pSM54.2-l / l to -1/3 and induction of the plasminogen gene
- Example 2e Measurement of the plasminogen activity in the samples of the main cultures after activation with streptokinase
- the plasminogen activity after activation with streptokinase was determined as described in example le for KM71H / pMHS476.1-l / l to -1/3. The following activity values were obtained for the samples taken after 72 h induction: KM71H / pSM54.2-l / l: 2 U / 1; KM71H / pSM54.2-l / 2: 8 U / 1; KM71H / pSM54.2-l / 3: 6 U / 1.
- Example 3a Amplification of the plasminogen gene with its own signal sequence and cloning into the vector pPICZA; Transformation of Pichia pastoris
- the amplification of the plasminogen gene including the sequence coding for the own signal peptide (pre-plasminogen) for cloning into the vector pPICZA was carried out with the two oligonucleotide primers N034 and N037 (Seq. ID No. 4) using the ones described in Example la Conditions carried out.
- the cloning of the pre-plasminogen gene into the vector pPICZA was carried out analogously to the cloning described in Example 1b, with both the vector and the PCR product being cut with the restriction endonucleases Sful and Kspl.
- the plasmid obtained was designated pSM49.8 (Fig.3).
- the correct sequence (Seq. ID No. 11) was confirmed by sequence analysis.
- Pichia pastoris KM71H was transformed with the plasmid pSM49.8.
- the colonies obtained were referred to as Pichia pastoris KM71H / pSM49.8-l / a, where “a” in turn stands for the consecutive numbering of the colonies starting with 1.
- Example 4a Amplification of the human GIu plasminogen gene with incorporation of the codons of a Kex2 interface and cloning into the expression vector pPICZ ⁇ (alpha) A; Transformation of Pichia pastoris
- the amplification of the glu-plasminogen gene for cloning into the vector pPICZ ⁇ A with incorporation of the codons for a Kex2 interface was carried out with the two oligonucleotide primers N034 and N035 (Seq. ID No. 5) using the conditions described in Example la , In addition to the bases complementary to the glu-plasminogen gene, the oligonucleotide primer N035 bears the codons for the Kex2 interface.
- the cloning of the glu-plasminogen gene in the vector pPICZ ⁇ A for the production of a fusion gene from the gene of the prepropeptide of the alpha factor of the yeast S. cerevisiae and the human glu-plasminogen gene with incorporation of the codons for the interfaces of the protease Kex2 was analogous to the cloning described in Example 1b.
- the plasmid obtained was designated pSM82.1 (Fig.4).
- the correct sequence (Seq. ID No. 13) was confirmed by sequence analysis.
- Pichia pastoris KM71H was transformed with the plasmid pSM82.1.
- the colonies obtained were referred to as Pichia pastoris KM71H / pSM82.1 / a, where “a” again stands for the consecutive numbering of the colonies starting with 1.
- Example 5a Amplification of the human glu-plasminogen gene with incorporation of the codons of a Kex2 site and two Stel3 sites at the 5 'end and cloning into the expression vector pPICZ ⁇ A; Transformation of Pichia pastoris
- the amplification of the glu-plasminogen gene for cloning into the vector pPICZ ⁇ A with incorporation of the codons for a Kex2 interface and two Stel3 interfaces was carried out with the two oligonucleotide primers N034 and N056 (Seq. ID No. 6) using the in Example la conditions described performed.
- the oligonucleotide primer N056 bears the codons for the Kex2 and Stel3 interfaces.
- the cloning of the glu-plasminogen gene in the vector pPICZ ⁇ A to produce a fusion gene from the gene of the prepropeptide of the alpha factor of the yeast S. cerevisiae and the human glu-plasminogen gene with incorporation of the codons for the interfaces of the proteases Kex2 and Stel3 was carried out analogously to the cloning described in Example 1b.
- the plasmid obtained was designated pSM58.1 (Fig.5).
- the correct sequence (Seq. ID No. 15) was confirmed by sequence analysis.
- Pichia pastoris KM71H was transformed with the plasmid pSM58.1.
- the colonies obtained were designated Pichia pastoris KM71H / pSM58.1 / a, where “a” in turn stands for the consecutive numbering of the colonies starting with 1.
- Example 6a Insertion of the Lys plasminogen gene from pSM54.2 into the vector pPIC9K
- plasmid constructed in this way was designated pAC37.1 (FIG. 6).
- Pichia pastoris KM71 was transformed with the plasmid pAC37.1 linearized with the restriction endonuclease SaR.
- the transformed cells were plated out on the histidine-free medium MD-agar (Multi-Copy Pichia Expression Kit Instruction Manual) and incubated.
- the colonies obtained were referred to as Pichia pastoris KM71 / pAC37.1-3 / a, where “a” in turn stands for the consecutive numbering of the colonies starting with 1.
- Example 6c Cultivation of Pichia pastoris KM71 / pAC37.1-3 / l and induction of the plasminogen gene
- Example 1d The preparation of the precultures and of the main cultures and the induction with methanol were carried out analogously to the conditions described in Example 1d. Induction took place over 216 h. It started with a methanol concentration of 0.5%, after 24 h and then at 48 h intervals, 2% methanol was added.
- Example 6d Measurement of the plasminogen activity in the samples of the main cultures after activation with streptokinase
- the plasminogen activity after activation with streptokinase was determined as described in example le for KM71H / ⁇ MHS476.1-l / l to -1/3. Obtain 120 U / 1 activity for the sample taken after 120 h induction. After 216 h induction, 190 U / 1 activity could be measured.
- Example 6e Induction of Pichia pastoris KM71 / pAC37.1-3 / l in minimal medium (BSM) and measurement of the plasminogen activity in the samples of the main cultures after activation with streptokinase
- BSM Basal Salts Medium
- Biotin solution (0.2 g / L): 8.0 mL / L.
- composition of the trace solution H2SO4: 5.0 mL / L; CuSO4-5H2O: 6.0 g / L; KI: 0.08 g / L;
- MnSO4-H2O 3.0 g / L; Na2MoO4: 0.2 g / L; H3BO3: 0.02 g / L; CoC12: 0.5 g / L; ZnC12: 20.0 g / L; FeSO4-7H2O: 65.0 g / L.
- Activation with streptokinase was determined as described in example le for KM71H / pMHS476.1-l / l to -1/3. After 120 hours of induction, 193 U / 1 plasminogen activity was determined, after 168 h 289 U / L could be measured.
- Example 6f Detection of the plasminogen activity in the samples of the main cultures after activation with streptokinase in the fibrinolysis clarification test
- 35 ml of a fibrinogen solution (225 mg / 37.5 ml 50 mM sodium phosphate buffer pH 7.4) were bubble-free with 350 ⁇ l thrombin solution (10 U / ml in 50 mM sodium phosphate buffer pH 7.4) mixed, stirred into the agarose solution and poured into a petri dish. After the fibrin agar solidified, 1 mm holes were made in the agar.
- Example 6g Purification of the plasminogen recombinantly produced in Pichia pastoris KM71 / pAC37.1-3 / l by affinity chromatography
- Proteins bound non-specifically bound were washed with 50 mM sodium phosphate buffer, pH 7.5, 0.5 M NaCl.
- the bound plasminogen was eluted with 50 mM sodium phosphate buffer pH 7.5, 0.01 M ⁇ -aminocaproic acid.
- Individual samples were analyzed by 7.5% SDS-PAGE with subsequent silver staining (FIG. 11).
- the recombinant plasminogen contained in the fractions is in the gel at the level of the human plasminogen applied as a reference (see FIG. 11).
- FIG. 11 shows a 7.5% SDS-PAGE of the cleaning fractions from example 6g.
- the abbreviations used in FIG. 11 have the following meanings:
- M size standard (from top to bottom: 116 kDa, 66 kDa, 45 kDa, 35 kDa.)
- Plg plasminogen (American Diagnostica, Pfung GmbH).
- Example 6h Fermentation of Pichia pastoris KM71 / pAC37.1-3 / l to evaluate the pH and the influence of the substrate
- YEP-G medium (10 g / 1 yeast extract, 20 g / 1 casein peptone, 20 g / 1 glycerol) in a 1 1 wide-necked flask without baffles were mixed with 2 ml glycerol cryoculture Pichia pastoris KM71 / ⁇ AC37.1-3 / l inoculated and incubated for 9 h at 30 ° C and 300 rpm.
- glycerol feed medium 500 g / l anhydrous glycerol, 10 ml / l trace solution, 10 ml / l biotin solution [see Example 6e]
- glycerol feed medium 500 g / l anhydrous glycerol, 10 ml / l trace solution, 10 ml / l biotin solution [see Example 6e]
- Example 7a Inserting the Lys plasminogen gene from pAC37.1 into the vector pGAPZ ⁇ A
- the two fragments were combined and ligated with 1 U T4 DNA ligase overnight at 4 ° C.
- the transformation of E. coli DH5 ⁇ , the isolation and characterization of the resulting plasmid was carried out analogously to the description in Example 1b.
- the plasmid constructed in this way was designated pJW9.1 (Fig.7).
- Example 7b Transformation of Pichia pastoris with the plasmid pJW9.1
- Pichia pastoris KM71H was transformed with the plasmid pJW9.1 linearized with the restriction endonuclease Blnl.
- the transformed cells were plated on YPDS agar with 100 ⁇ g / ml Zeocin (EasySelect TM Pichia Expression Kit Instruction Manual) and incubated.
- the colonies obtained were designated Pichia pastoris KM71H / JW9.1-a, where "a” in turn stands for the consecutive numbering of the colonies starting with 1.
- Example 7c Fermentation of Pichia pastoris KM71H / pJW9.1-3 to evaluate the pH value and the glycerol feed rate
- Example 7d Fermentation of Pichia pastoris KM71H / pJTW9.1-3
- YEP-G medium (10 g / 1 yeast extract, 20 g / 1 casein peptone, 20 g / 1 glycerol) in a 1 1 wide neck flask without baffles were inoculated with Pichia pastoris KM71H / pJW9.1-3 and added for 9 h Incubated at 30 ° C and 300 rpm. 10 ml of this culture was used to make 40 ml MG medium (5 g / 1 yeast nitrogen base w / o amino acids, 20 g / 1 glycerol, 2.5 ml / 1 biotin solution (0.2g / l)) in a 1 1 wide-mouth shake flask without inoculation. This culture was incubated at 30 ° C and 300 rpm for 16 h.
- 3 1 BSM medium (see Example 6e) were inoculated with 30 ml of this culture in a 7.5 1 laboratory fermenter (type Labfors, ors AG, CH). The fermentation was carried out at 25 ° C. and a constant gassing rate of 3.2 l / min. After 24 h, glycerol solution (500 g / l glycerol, 10 ml / 1 trace solution, 10 ml / 1 biotin solution [see Example 6e]) was metered in. The dosage rate was gradually increased from 10 ml / h during the fermentation to 45 ml / h. After 250 h, 1375 U / 1 plasminogen activity after streptokinase activation could be measured.
- glycerol solution 500 g / l glycerol, 10 ml / 1 trace solution, 10 ml / 1 biotin solution [see Example 6e]
- proteases supplied in powder form were dissolved in buffer, the proteases supplied in solution were used directly or, if necessary, diluted with buffer. 25 ul of the protease solutions were mixed with 25 ul plasminogen according to the present invention (20 mg / ml) and incubated at 37 ° C for 10 min. The plasmin activity with respect to the substrate N-tosyl-Gly-Pro-Lys-pNA was then determined.
- proteases protease from S. griseus, protease VIII, protease XXIII, protease XLX, protease XVIII, ficin, metalloendopeptidase, clostripain, Glu-C, protease XIII, chymopapain, chymotrypsin, protease X, bromelain, kallikrein and proteinase A were from Sigma, Related to Deisenhofen; Trypsin, papain, Asp-N, Dispase I, Lys-C, thrombin and elastase were from Röche, Mannheim, proteinase K was supplied by QIAGEN, Hilden.
- the protease stock solutions produced had the protein concentrations given in the table.
- the dilution factor F indicates the ratio in which the stock solutions were diluted for the measurements.
- the recombinant functional plasminogen used in the following examples was obtained using the inventive production process.
- the term "plasminogen” refers to both recombinant micro, mini, Lys or glu plasminogen and the term "plasmin” to plasmin, which by proteolytic cleavage of recombinant micro, mini, Lys or glu plasminogen was won.
- the activation of micro, mini, Lys or Glu plasminogen can be obtained using the same plasminogen activators, in particular plasminogen activating proteases, as described above, but is not limited to this, the ratio of units activator to units plasminogen (micro , Mini, Lys or Glu plasminogen) is approximately 1: 1000.
- the plasminogen can be proteolytic, i.e. H. activated by the proteases tissue plasminogen activator, urokinase or the proteases VIII or protease from S. griseus described in the patent, and also by complexation with streptokinase or staphylokinase.
- Hydroxyethyl cellulose 10,000 3.5 g optional preservation (sorbic acid / potassium sorbate 0.1-0.4% » PHB ester 0.1%). purified water ad 100.0
- hydroxyethyl cellulose or instead hypromellose or methyl cellulose can alternatively be used in an amount of 0.5-15.0 g.
- Hydroxyethyl cellulose 10,000 32.5 g optional preservation (sorbic acid / potassium sorbate 0.1-0.4%, PHB ester 0.1%)
- Hydrophilic ointment (macrogol ointment)
- Macrogol 4000 10.0 g optional preservation (sorbic acid / potassium sorbate 0.1-0.2%, PHB ester 0.1%) purified water ad 50.0 g
- Vaseline white to 100 g
- Plasminogen 100 U Plasminogen activator (s) 0.1 U Hypromellose 400 20 g Vaseline, white to 100 g
- Carbomer e.g. Carbopol 974p 15 g
- Sorbitol 10 g optional preservation (sorbic acid / potassium sorbate 0.1-0.2%, PHB ester 0.1%)
- Capsule one capsule with 0.25g powder / granules contains:
- one capsule with 0.25g powder / granules contains:
- 100g pellets contain:
- plasminogen activator s
- the same amount based on the activity of plasmin can also be used in the formulations listed. If plasmin is used directly, the plasminogen activator (s) need not be contained in the pharmaceutical formulation.
- Hydroxyethylcellulose 400 2.5 - 5.0 g of purified water to 100.0 g
- the swelling time is 1 to 3 hours.
- Polyhexanide can optionally be used as an antimicrobial agent in a concentration of up to 0.2
- Hydroxyethylcellulose 400 e.g. Tylose ® H 300 or Natrosol 250 ® HX PHARM
- Macrogol 400 30.0 - 32.5 g
- Macrogol 4000 12.5 - 7.5 g of purified water to 50.0 g
- 12.5 g Macrogol 4000 and 30.0 g Macrogol 400 (7.5 g Macrogol 4000 and 32.5 g Macrogol 400 for soft ointments) are heated in an ointment dish in a water bath until the macrogol has melted. After cooling, the corresponding amount of plasmin, which was produced with the aid of the inventive method, is added dissolved in 7.5 g of purified water and then homogenized.
- Propylene glycol 30 ml of purified water to 100 ml.
- micro-, mini-, lys- or glu-plasminogen can also be used in the amounts specified for the plasmin based on the activity in units, if at least one plasminogen activator is added at the same time, in an amount of 1: 10,000 to 1 : 100, preferably in an amount of 1: 1000 based on the plasminogen activity.
- Example 10a Amplification and cloning of various forms of the mini and microplasminogen gene and cloning into the vector pPICZ ⁇ A; Transformation of Pichia pastoris
- Mini and microplasminogen are shortened plasminogen derivatives which lack N-terminal domains, but which can nevertheless be activated to active plasmin.
- the amplification of the mini and microplasminogen genes for cloning into the vector pPICZ ⁇ A was carried out with the oligonucleotide primer N034 for the 3 'end and one of the primers N036a-j (Seq. ID No. 19 to 28) for the respective 5' end using the conditions described in Example la.
- the oligonucleotide primers N036a, c, e, g, i carry the codons for the Kex2 interface
- the primers N036b, d, f, hj also carry the codons for the Kex2- Interface the codons for two Stel3 interfaces.
- the primer N034 also carries a Ksp ⁇ interface
- the primers N036 a-j carry a J ⁇ ol interface.
- the cloning of the mini and microplasminogen genes into the vector pPICZ ⁇ A was carried out analogously to the cloning described in Example 1b, both the vector and the respective PCR product with the and Kspl were cut.
- the primers used, the names of the plasminogen derivative, the encoded protease cleavage sites, the name of the plasmids obtained and the N-terminal amino acid of the secreted plasminogen derivative can be found in the following table.
- the numbering refers to the 810 amino acid long pre-plasminogen (Seq. ID No. 12)
- the plasmid pPLGl. 1 is shown as an example in FIG.
- strains based on the plasmids pPLG2.1, pPLG3.2, pPLG4.2, pPLG5.3, pPLG ⁇ .l, pPLG7.1, pPLG8.3, pPLG9.1 and pPLGlO.l was carried out in accordance with the
- N036b AAAAACTCGAGAAAAGAGAGGCTGAAGCTGCACCTCCGCCTGTTG
- N036j AAAAACTCGAGAAAAGAGAGGCTGAAGCTTCATTTGATTGTGGGAAGCC.
- Example 10b Amplification and cloning of various forms of the mini and microplasminogen gene and cloning into the vector pGAPZ ⁇ A; Transformation of Pichia pastoris
- the amplification of the mini and microplasminogen genes for cloning into the vector pGAPZ ⁇ A was carried out with the oligonucleotide primer N034 for the 3 'end and one of the primers N036a-j (Seq. ID No. 19 to 28) for the respective 5th 'End performed using the conditions outlined in Example la.
- the oligonucleotide primers N036a, c, e, g, i carry the codons for the Kex2 interface
- the primers N036b, d, f, h, j also carry the codons for the Kex2 interface the codons for two Ste 13 interfaces.
- the primer N034 also carries an i & pI interface
- the primers N036 a-j carry a J ⁇ ol interface.
- the cloning of the mini and microplasminogen genes in the vector pGAPZ ⁇ A was carried out analogously to the cloning described in Example 1b, both the vector and the respective PCR product with the restriction endonucleases Xhol and Kspl were cut.
- the primers used, the names of the plasminogen derivatives, the encoded protease cleavage sites, the name of the plasmids obtained and the N-terminal amino acid of the secreted plasminogen derivative can be found in the following table.
- the plasmid pPLGl 1.2 is shown by way of example in FIG. 9.
- the KM71H strain was produced in accordance with the preparation /pPLGl.ll/a.
- Sequence 8 human Lys plasminogen with Kex2 cleavage and the signal peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 10 human Lys-plasminogen with Stel3 and Kex2 interfaces and the signal peptide of the alpha-factor of the yeast Saccharomyces cerevisiae RFPSIFTAVLFAASSALAAPVN TTEDETAQIPAEAVIGYSD EGDFDV AV PFSNSTNNGL FI TTIASIAAKEEGVSLEKREAEAKVY SECKTGN GK1 -TRGTMSKTKNGITCQKWSSTSPHRPRFSPATHPSEG EENYCRNPDN DPQGPWCYTTDPEKRYDYCDILECEEEC HCSGENYDGKISKTMSG ECQ ATiTOSQSPHAHGYIPSKFPNKl r KKNYCRNPDRELRP CFTTDPN R ELC DIPRCTTPPPSSGPTYQCLKGTGENYRGNVAVTVSGHTCQH SAQTPHTH KKTPENFPC N DE YCRNPDG RAP CHTTNSQVR EYC IPSCDSSPV STEQLAPTAPPELTPWQDC
- Sequence 14 human Glu plasminogen with Kex2 cleavage and the signal peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- a TG AGATTT C CTT C A A TTT T T A CTGCTGTTTTATTCGCAGCATCCTCCGCATTAGCTGCT CC A GTC AA C ACT AC AA C AA AG GATGAAACGGCACAAATTCCGGCTGAAGCTGTCATCGGT TACT C AGATT DAY AAGGGGATTT CGATGTTGCTGTTTTGCCATTTTCCAACAGCACAAAT AACGGGTTATTGTTTATAA ATACTACTATTGCCAGCATTGCTGCTAAAGAAGAAGGGGTA TC T CTCGAGA A AA G A G A G A GGCTGAAGCTGAGCCTCTGGATGACTATGTGAATACCCAGGGG
- TGA Sequence 16 human Glu-plasminogen with Stel3 and Kex2 interfaces and the signal peptide of the alpha-factor of the yeast Saccharomyces cerevisiae RFPSIFT ⁇ VLFAASSA AAPVNTTTEDETAQIPAEAVIGYSDLEGDFDV AVLPFSNSTNNG LFINTTIASIAAKEEGVSLEKREAEAEPLDDYVNTQG ASLFSV KKQ GAGSIEECAAKCEED ⁇ EFTCRAFQYHSKEQQCVIMAENR KSS11IR RDVVLFEKKVY SEC TGNGKNYRGTMSKT NGITCQKWSST SPHRPRFSPATHPSEGLE ⁇ NYCRNPDNDPQGP CYTTDPEKRYDYCDILE CEEECMHCSGENYDGKISKTMSGLECQAWDSQSPHAHGYIPSKFPNKNLK KNYCRNPDRELRP CFTTDPN R ELCDIPRCTTPPPSSGPTYQCLKGTG ENYRGNVAVTVSGHTCQH
- Sequence 17 sequence of the glu-plasminogen secreted into the medium (pSM49.8, pSM58.1 and pSM82.1)
- Sequence 18 sequence of the Lys plasminogen secreted in the medium (pMHS476.1, pSM54.2, pAC37.1 and pJW9.1)
- Sequence 29 mini-plasminogen (pPLGl.l and pPLG2.1)
- Sequence 30 micro-plasminogen ( ⁇ PLG3.2 and pPLG4.2)
- Sequence 31 micro-plasminogen (pPLG5.3 and pPLG ⁇ .l)
- Sequence 32 micro-plasminogen (pPLG7.1 and pPLG8.3)
- Sequence 33 micro-plasminogen (pPLG9.1 and pPLGlO.l)
- Sequence 34 DNA sequence of the alpha factor from the yeast Saccharomyces cerevisiae in pPICZ ⁇ A up to the Kex2 interface.
- Sequence 35 amino acid sequence of the alpha factor from the yeast Saccharomyces cerevisiae in pPICZ ⁇ A up to the Kex2 interface.
- Sequence 36 DNA sequence of the Kex2 interface
- Sequence 38 amino acid sequence of the Kex2 interface
- Sequence 40 amino acid sequences of the human mini-plasminogen as in pPLGl.l with Kex2 cleavage and the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 42 amino acid sequence of the human micro-plasminogen as in pPLG3.2 with Kex2 cleavage and the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 43 amino acid sequence of the human micro-plasminogen as in pPLG4.2 with Kex2 cleavage and two Stel3 cleavages and the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 44 amino acid sequence of the human micro-plasminogen as in pPLG5.3 with Kex2 cleavage and the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 45 amino acid sequence of the human micro-plasminogen as in pPLG6.1 with Kex2 cleavage and two Stel3 cleavages and the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 46 Ammo acid sequence of the human micro-plasminogen as in pPLG7.1 with Kex2 cleavage and the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 47 amino acid sequence of the human micro-plasminogen as in pPLG8.3 with Kex2 cleavage and two Stel3 cleavages and the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 48 amino acid sequence of the human micro-plasminogen as in pPLG9.1 with Kex2 cleavage and the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 49 amino acid sequence of the human micro-plasminogen as in pPLGlO.l with Kex2 cleavage and two Stel3 cleavages and the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 50 nucleic acid sequence of the human mini-plasminogen gene as in pPLGl.l with the codons for the Kex2 site and the gene of the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 51 nucleic acid sequence of the human mini-plasminogen gene as in pPLG2.1 with the codons for the Kex2 interface and the Stel3 interfaces and the gene of the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 52 Nuclear acid sequence of the human micro-plasminogen gene as in pPLG3.2 with the codons for the Kex2 site and the gene of the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 53 nucleic acid sequence of the human micro-plasminogen gene as in pPLG4.2 with the codons for the Kex2 and Stel3 sites and the gene of the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 54 nucleic acid sequence of the human micro-plasminogen gene as in pPLG5.3 with the codons for the Kex2 interface and the gene of the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- a Sequence 55 nucleic acid sequence of the human micro-plasminogen gene as in pPLG6.1 with the codons for the Kex2 site and the Stel3 sites and the gene of the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 56 nucleic acid sequence of the human micro-plasminogen gene as in pPLG7.1 with the codons for the Kex2 site and the gene of the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 57 Nuclear acid sequence of the human microplasminogen gene as in pPLG8.3 with the codons for the Kex2 interface and the Stel3 cleavage sites and the gene of the prepro peptide of the alpha Factor of the yeast Saccharomyces cerevisiae
- Sequence 58 Nucleic acid sequence of the human micro-plasminogen gene as in pPLG9.1 with the codons for the Kex2 site and the gene of the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 59 Nuclear acid sequence of the human micro-plasminogen gene as in pPLGlO.l with the codons for the Kex2 interface and the Stel3 interfaces and the gene of the prepro peptide of the alpha factor of the yeast Saccharomyces cerevisiae
- Sequence 60 nucleic acid sequence of the human mini-plasminogen gene as in pPLGl.l and pPLG2.1
- Sequence 61 nucleic acid sequence of the human micro-plasminogen gene as in pPLG3.2 and pPLG4.2
- Sequence 62 nucleic acid sequence of the human micro-plasminogen gene as in pPLG5.3 and pPLG6.1
- Sequence 63 nucleic acid sequence of the human micro-plasminogen gene as in pPLG7.1 and pPLG8.3
- Sequence 64 Nuclear acid sequence of the human micro-plasminogen gene as in pPLG9.1 and pPLGlO.l
- Sequence 65 nucleic acid sequence of the human glu-plasminogen gene
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| WO2008027000A2 (en) | 2006-08-28 | 2008-03-06 | Omnio Healer Ab | Novel drug target of preventing and treating periodontal disease, improving healing of periodontal wounds and promoting oral health |
| DK2056864T3 (en) | 2006-08-28 | 2014-03-10 | Omnio Healer Ab | CANDIDATES AGAINST INFECTION |
| WO2011004011A1 (en) | 2009-07-10 | 2011-01-13 | Thrombogenics Nv | Variants of plasminogen and plasmin |
| AU2010313492B2 (en) * | 2009-10-30 | 2014-05-29 | Merck Sharp & Dohme Corp. | Method for producing therapeutic proteins in Pichia pastoris lacking dipeptidyl aminopeptidase activity |
| JP6085568B2 (ja) | 2011-01-05 | 2017-02-22 | スロンボジェニックス・ナムローゼ・フェンノートシャップThromboGenics NV | プラスミノーゲンおよびプラスミンの変異体 |
| CA2844644A1 (en) | 2011-08-12 | 2013-02-21 | Thrombogenics N.V. | Plasminogen and plasmin variants |
| CA3008466C (en) | 2015-12-18 | 2023-06-20 | Talengen International Limited | Method for preventing or treating radiation and chemical damage |
| TWI653982B (zh) | 2015-12-18 | 2019-03-21 | 大陸商深圳瑞健生命科學研究院有限公司 | Method for preventing or treating acute and chronic thrombosis |
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| CN109456989B (zh) * | 2018-10-31 | 2022-03-29 | 陕西慧康生物科技有限责任公司 | 一种提高毕赤酵母分泌表达的载体的构建方法 |
| AU2020314044A1 (en) * | 2019-07-12 | 2022-03-03 | Monash University | Methods for making recombinant protein |
| JP7624238B2 (ja) * | 2020-03-24 | 2025-01-30 | タレンゲン インターナショナル リミテッド | ハンチントン病を治療する方法及び薬剤 |
| CN116854792B (zh) * | 2023-04-28 | 2024-07-26 | 优睿赛思(武汉)生物科技有限公司 | 突变型α-factor信号肽及其编码基因、表达载体和应用 |
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|---|---|---|---|---|
| US5190756A (en) * | 1989-12-01 | 1993-03-02 | Genentech, Inc. | Methods and materials for expression of human plasminogen variant |
| GB9222758D0 (en) * | 1992-10-29 | 1992-12-09 | British Bio Technology | Proteins and nucleic acids |
| JP4047170B2 (ja) * | 2000-12-21 | 2008-02-13 | トロム−イクス・ナムローゼ・フエンノートシャップ | 酵母発現ベクターおよび酵母細胞における発現による組換えタンパク質の製造方法 |
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- 2003-02-06 AU AU2003210137A patent/AU2003210137A1/en not_active Abandoned
- 2003-02-06 CA CA002475277A patent/CA2475277A1/en not_active Abandoned
- 2003-02-06 WO PCT/DE2003/000341 patent/WO2003066842A2/de not_active Ceased
- 2003-02-06 MX MXPA04007585A patent/MXPA04007585A/es unknown
- 2003-02-06 JP JP2003566193A patent/JP2005525798A/ja active Pending
- 2003-02-06 EP EP20030737248 patent/EP1472346A2/de not_active Withdrawn
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| CN1768138A (zh) | 2006-05-03 |
| AU2003210137A1 (en) | 2003-09-02 |
| MXPA04007585A (es) | 2005-09-20 |
| CA2475277A1 (en) | 2003-08-14 |
| AU2003210137A8 (en) | 2003-09-02 |
| WO2003066842A3 (de) | 2004-06-10 |
| WO2003066842A2 (de) | 2003-08-14 |
| JP2005525798A (ja) | 2005-09-02 |
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