41 results about "PLG - Plasminogen" patented technology

To provide methods of identifying new substrates for proteases and methods of using these substrates in a variety of therapeutic, diagnostic and prophylactic indications.SOLUTION: The invention relates generally to: polypeptides that include a cleavable moiety that is a substrate for at least one protease selected from matriptase and u-plasminogen activator (uPA); activatable antibodies and other large molecules that include the cleavable moiety that is a substrate for at least one protease selected from matriptase and u-plasminogen activator; and methods of making these polypeptides that include the cleavable moiety that is a substrate for at least one protease selected from matriptase and u-plasminogen activator, and methods of use in a variety of therapeutic, diagnostic and prophylactic indications.SELECTED DRAWING: Figure 4A

The present application relates to a method for promoting the degradation of pathological TDP-43 protein, comprising administering to a subject a therapeutically effective amount of one or more compounds selected from components of the plasminogen activation pathway, compounds that can activate plasminogen directly or indirectly by activating upstream components of the plasminogen activation pathway, compounds that mimic the activity of plasminogen or plasmin, compounds that can upregulate the expression of plasminogen or plasminogen activators, plasminogen analogs, plasmin analogs, tPA or uPA analogs, and antagonists of fibrinolysis inhibitors. The present application also relates to agents that promote the degradation of pathological TDP-43 protein and uses thereof.

The invention relates to the technical field of electrochemical sensing, in particular to a multi-channel electrochemical aptamer sensor and a preparation method and application thereof.The multi-channel electrochemical aptamer sensor adopts a commercial silk-screen printing electrode and is combined with a polymer substrate material for amplifying electrochemical signals, and the electrochemical aptamer sensor is prepared. According to the present invention, the corresponding aptamer is fixed by using the gold nanoparticle through the chemical bond so as to specifically detect the three hemorrhage conversion biomarkers after acute cerebral infarction, such as human matrix metalloproteinase (MMP-9), fibrinogen (FN) and plasminogen activation inhibitor (PAI-1); wherein the FN and the PAI-1 are detected through an electrochemical aptamer sensor method for the first time, and simultaneous detection of the three biomarkers is realized through integration with commercial multi-channel micro electrochemical equipment.

The present invention provides methods for modifying a donor organ, e.g., liver, or a portion thereof. The methods comprise contacting the donor liver with lipid nanoparticles comprising RNA. Compositions of lipid nanoparticles comprising RNA are also provided. The disclosed LNPs may comprise an siRNA, e.g., targeting tissue plasminogen activator (tPA) or plasminogen activator inhibitor 1 (PAI-1). The LNPs may comprise an mRNA encoding a protein, e.g., Nuclear Factor-erythroid factor 2-related factor 2 (NRF2) or thrombomodulin.

The present invention relates to double stranded ribonucleic acid (dsRNA) compositions targeting the plasminogen (PLG) gene, as well as methods of inhibiting PLG expression, and methods of using such dsRNA compositions to treat subjects that would benefit from reduced PLG expression, such as subjects having a PLG-related disease, disorder or condition.

The present technology relates to recombinant polypeptides comprising tissue-type plasminogen activator (tPA) fragments or nucleotides encoding said recombinant polypeptides and their use for the treatment of cardiovascular diseases. In some embodiments, the tPA fragment comprises a kringle 2 domain of the tPA.

The invention discloses a PAI-1 protein targeting peptide compound (called P peptide for short) with a thrombus dissolving effect and application thereof, and belongs to the field of biological medicine. The PAI-1 targeted thrombolytic polypeptide compound comprises P1, P2, P3 and P4, and is characterized in that the compound is derived from a core structure 'X-Asp-Glu-Leu-Cys-X-Tyr-Tyr-X-X-Cys-X' (cyclization is performed through a disulfide bond between Cys, and X represents any type of amino acid), and the compound can be specifically bound with a key binding site of PAI-1. The polypeptide can significantly reduce the inhibitory effect of PAI-1 on plasminogen activators (tPA, uPA), enhance the activity of a fibrinolytic system, and generate in-vivo and in-vitro thrombolysis effects. The polypeptide compounds P1, P2, P3 and P4 not only have a thrombolysis effect, but also can reduce the expression level of pro-inflammatory cytokines (IL-1beta, TNF-alpha, IL-6 and the like), which shows that the polypeptide compounds also have an anti-inflammatory effect. In conclusion, the polypeptide compound can be used for preparing a PAI-1 antagonist, a thrombolytic agent and an anti-inflammatory agent related to thrombus.

This invention relates to the field of biological detection, and more particularly to the preparation method and application of the t-PAI·C detection kit. The invention provides a detection reagent comprising: antibody-coated magnetic microparticles and enzyme-labeled antibodies; the antibodies include: tissue plasminogen activator-plasminogen activator inhibitor-1 complex antibody. In the detection reagent provided by this invention, when the sample contains the tissue plasminogen activator-plasminogen activator inhibitor-1 complex, the antibody coated with the magnetic microparticles and the enzyme-labeled antibody undergo an immune reaction with the complex, forming a sandwich-like immune complex consisting of the antibody coated with the magnetic microparticles, the complex, and the enzyme-labeled antibody; the enzyme on this complex acts on a luminescent substrate and emits light, and the concentration of the complex in the sample is calculated by detecting the luminescence signal.

A method comprising the steps of: (a) assessing an expression level of at least one protein, selected from Table 1, 2 or 3 in a sample from a subject, where in the at least one protein may be selected from the list comprising: Beta-Ala-His dipeptidase, Apolipoprotein L1, Methanethiol oxidase, Vitamin K-dependent protein S, von Willebrand factor, Plasminogen, Selenoprotein P, Protein disulfide-isomerase A6 and Inter-alpha-trypsin inhibitor heavy chain H3, and (b) using the expression level to determine whether the subject has endometriosis.

This invention belongs to the field of biomedical technology, specifically relating to a recombinant human plasminogen mutant, its preparation method, and its application. A recombinant human plasminogen mutant, the amino acid sequence of which is shown in SEQ ID NO.3. The recombinant human plasminogen mutant of this invention, compared to wild-type mPLG, can be directly expressed solublely in the supernatant of *E. coli* fermentation broth. Soluble expression allows for direct chromatography of the fermentation broth to obtain the target protein, which has significant advantages over inclusion body renaturation treatment in terms of process simplification, activity loss, time cost, and production cost. Furthermore, the activity of the mutant protein was tested using the fibrin plate method and kit method. The results showed that the titer of the target protein was approximately 8 UI / mg, which is similar to the titer of mPLG obtained by renaturation before mutation and PLG obtained from human blood. In summary, compared to the wild type, the mutant strain exhibits significantly improved solubility while maintaining high protein activity.

The present invention relates to plasminogen for use in a method for treating or preventing lung dysfunction associated with the formation of hyaline membranes in a patient, wherein the patient is preferably further administered with at least one plasminogen activator.

The present disclosure provides humanized anti-GluN1 receptor antibodies and antigen-binding fragments or derivatives thereof, which are effective in inhibiting the deleterious effects of tissue-type plasminogen activator (t-PA) mediated by N-methyl-D- aspartate (NMDA) receptors, as well as pharmaceutical compositions and medical uses thereof, particularly for the treatment of neurological, neurovascular or neurodegenerative disorders, such as stroke, multiple sclerosis, Parkinson' s disease, and others.

The present disclosure provides a duplex or single-stranded siRNA molecule against plasminogen, the siRNA molecule containing modified or unmodified nucleotides and wherein at least one strand of the duplex or the single-stranded siRNA has a sequence that has at least 80% sequence identity to any one of SEQ NOs: 1 to 28. Further provided is a duplex or single-stranded siRNA molecule against plasminogen, the siRNA molecule containing modified or unmodified nucleotides and is between 25 and 35 nucleotides in length. The siRNA molecule may be formulated in a lipid nanoparticle as described herein.

Provided is a pharmaceutical composition with which it is possible to prevent the development of late-onset cerebral ischemia and obtain a prognosis-improving effect by performing active hematoma removal using a tissue plasminogen activator. This pharmaceutical composition contains a tissue plasminogen activator as an active ingredient and is for use in hematoma removal therapy in the cerebral cistern to remove a dislodged hematoma by suction by using the tissue plasminogen activator in an aqueous solution state as a cleansing agent, said therapy being performed at the same time as treatment of a cerebral aneurysm by means of craniotomy with clipping during the acute phase of a subarachnoid hemorrhage associated with a ruptured cerebral aneurysm.

The invention discloses a chronic hepatitis B related disease process prediction method based on the ratio of PLG to PT. The method comprises the following steps: S1, sample collection: collecting sodium citrate anticoagulant venous blood of a to-be-predicted object; s2, index detection: detecting the plasminogen level in the plasma by adopting a chromophoric substrate method, and detecting the prothrombin time in the plasma by adopting a coagulation method; s3, specific value calculation: calculating the specific value of PLG to PT, wherein the specific value is used as a core prediction index of the chronic hepatitis B related end-stage liver disease process; and S4, process judgment: judging a disease process stage of the to-be-predicted object according to the PLG / PT ratio in combination with a preset threshold value. The method has the beneficial effects that the ratio of the PLG to the PT is used as a core prediction index. The specific value integrates dual information of liver synthesis function and blood coagulation fibrinolysis system imbalance, the scientificity of indexes is ensured, the design logic of the specific value is different from that of any existing verification method, and the crossing from single-dimensional detection to multi-dimensional integration evaluation is realized.

This disclosure relates to isolated oligonucleotides comprising duplex regions targeting human PLG mRNA, and delivery systems, kits and compositions comprising the same, and methods of using the same for inhibiting or downregulating PLG gene expression and treating or preventing a disease or disorder associated with aberrant or increased expression or activity of PLG or a disease or disorder where PLG plays a role.

Provided herein are compositions, systems, kits, and methods for treating a patient with a thromboembolism by administering nanoconjugates comprising nanoparticles encapsulating and / or conjugated to: i) tissue-type plasminogen activator (tPA), and ii) at least one antioxidant enzyme selected from the group consisting of: superoxide dismutase, glutathione peroxidase, glutathione reductase, and a catalase.

To provide a fusion protein for targeted delivery of a plasminogen activator in a fibrin-independent manner to a platelet-VWF complex or a site where the platelet-VWF complex is located.SOLUTION: A pharmaceutical composition for preventing or treating microvascular thrombosis is provided, comprising a fusion protein, wherein the fusion protein comprises a plasminogen activator and a targeting agent for targeting the plasminogen activator to a site of a thrombus comprising VWF and platelets, wherein the targeting agent comprises an antibody variable domain that specifically binds to VWF, and wherein the antibody variable domain comprises a CDR3 domain having the amino acid sequence of SAGLYVGDGPDDAMDDY.SELECTED DRAWING: None

The disclosure relates to double stranded ribonucleic acid (dsRNA) agents and compositions targeting the plasminogen (PLG) gene, as well as methods of inhibiting expression of an PLG gene and methods of treating subjects having an PLG-associated disease or disorder, such as hereditary hemorrhagic telangiectasia (HHT), using such dsRNA agents and compositions.

The invention discloses a transcription template DNA (Deoxyribose Nucleic Acid) of an LMP1 (Lipoprotein Protein 1) antigen mRNA (Messenger Ribonucleic Acid) and the LMP1 antigen mRNA obtained by transcription of the transcription template DNA. The transcription template DNA is formed by sequentially connecting a promoter, a 5'end non-coding region, a human tissue plasminogen activator gene secretion signal peptide, an LMP1 antigen coding region, a main histocompatibility complex I-type transport signal, a 3 'end non-coding region, a poly (adenylic acid) tail and a terminal sequence; the human tissue plasminogen activator gene secretion signal peptide, the LMP1 antigen coding region and the main histocompatibility complex type I transport signal are connected through a GS flexible linker. The LMP1 antigen mRNA disclosed by the invention efficiently expresses the LMP1 antigen and induces specific immune response in a body. The invention also discloses an application of the LMP1 antigen mRNA in preparation of drugs for preventing and / or treating EBV-related tumors.

The present invention provides means and methods for treating MVT and associated and / or similar conditions. The invention therefore provides hybrid proteins for targeted delivery of plasminogen activators to platelet-VWF complexes, or alternatively to the site where these are located, in a fibrin-independent manner. The invention further provides therapeutic methods for conditions that can be prevented or treated by local delivery / stimulation of plasminogen activation to sites of microvascular occlusion.

The present invention provides tissue plasminogen activator antibody molecules and their uses. More particularly, the presently-disclosed invention provides humanised antibody molecules which specifically bind tissue plasminogen activator (TPA) and their use in treating TPA induced haemorrhage, in particular treating systemic haemorrhage such as brain haemorrhage after treatment of ischemic stroke or myocardial infarction, or systemic bleeding after TPA treatment of pulmonary embolism, ischemic stroke or myocardial infarction.

The present invention relates to a method for isolating Glu-Plasminogen from a solution containing Glu-Plasminogen and one or more other polypeptides, wherein the method comprises the step of eluting the Glu-Plasminogen from the cation exchange solid phase with an elution buffer of a pH in the range of 6.2 to 6.5. Furthermore, the present invention relates to a composition comprising Glu-Plasminogen obtainable from the method of the invention.

A fusion protein is provided. [Solution] The fusion protein of the present invention comprises a tissue plasminogen activator or a variant thereof, a disintegrin or a variant thereof, and a connector that binds the tissue plasminogen activator or a variant thereof and the disintegrin or variant thereof and comprises an amino acid sequence set forth in any one of SEQ ID NOs: 1 to 7. The present invention further provides a method for using the fusion protein in the treatment or prevention of a disease associated with thrombus formation.

The application provides application of capillary electrophoresis-mass spectrometry online connection, a detection method of tissue plasminogen activator drug heteromer, and relates to the technical field of analysis and detection.The application utilizes online capillary electrophoresis and mass spectrometry connection, separates t-PA through a capillary zone electrophoresis (CZE) mode, uses a neutral coating capillary, uses an acid-water mixed solution or an acid-acetonitrile-water mixed solution as an electrophoresis background buffer, adopts air pressure sampling, applies a separation voltage to perform capillary zone electrophoresis, effectively separates the heteromer in the t-PA drug through CZE, then introduces a mass spectrometer through an electric osmosis flow driven coaxial sheath flow liquid electrospray ion source for detection and analysis, realizes high-efficiency, accurate and high-sensitivity detection of the heteromer in the t-PA drug.Further, the capillary electrophoresis-mass spectrometry online connection detection adopted by the application is short in time consumption, small in required sample amount, and provides a reliable means for evaluating the quality and stability of the t-PA drug.

The invention relates to double-stranded ribonucleic acid (dsRNA) compositions targeting the plasminogen (PLG) gene, as well as methods of inhibiting expression of PLG, and methods of treating subjects that would benefit from reduction in expression of PLG, such as subjects having a PLG-associated disease, disorder, or condition, using such dsRNA compositions.