349 results about "Peptide molecule" patented technology

The invention includes methods and compositions for remodeling a peptide molecule, including the addition or deletion of one or more glycosyl groups to a peptide, and/or the addition of a modifying group to a peptide.

This invention relates to novel pharmaceutically useful compositions that bind to a biological molecule, having improved circulatory half-life, increased avidity, increased affinity, or multifunctionality, and methods of use thereof. The present invention provides a pseudo-antibody comprising an organic moiety covalenty coupled to at least two target-binding moieties, wherein the target-binding moieties are selected from the group consisting of a protein, a peptide, a peptidomimetic, and a non-peptide molecule that binds to a specific targeted biological molecule. The pseudo-antibody of the present invention may affect a specific ligand in vitro, in situ and/or in vivo. The pseudo-antibodies of the present invention can be used to measure or effect in an cell, tissue, organ or animal (including humans), to diagnose, monitor, modulate, treat, alleviate, help prevent the incidence of, or reduce the symptoms of, at least one condition.

The invention includes methods and compositions for remodeling a peptide molecule, including the addition or deletion of one or more glycosyl groups to a peptide, and/or the addition of a modifying group of peptide.

The invention includes methods and compositions for remodeling a peptide molecule, including the addition or deletion of one or more glycosyl groups to a peptide, and/or the addition of a modifying group to a peptide.

The present invention provides processes for measuring DNA or RNA binding proteins, specific nucleic acids, as well as enzyme activities using labeled nucleic acids of labeled protein/peptide molecules.

The invention includes methods and compositions for remodeling a peptide molecule, including the addition or deletion of one or more glycosyl groups to a peptide, and/or the addition of a modifying group to a peptide.

Compositions and methods are disclosed for stimulating or inhibiting angiogeniesis and/or cardiovascularization in mammals, including humans. Pharmaceutical compositions are based on polypeptides or antagonists thereto that have been identified for one or more of these uses. Disorders that can be diagnosed, prevented, or treated by the compositions herein include trauma such as wounds, various cancers, and disorders of the vessels including atherosclerosis and cardiac hypertrophy. In addition, the present invention is directed to novel polypeptides and to nucleic acid molecules encoding those polypeptides. Also provided herein are vectors and host cells comprising those nucleic acid sequences, chimeric polypeptide molecules comprising the polypeptides of the present invention fused to heterologous polypeptide sequences, antibodies which bind to the polypeptides of the present invention and to methods for producing the polypeptides of the present invention.

The invention relates to a novel bioconjugation protocol for peptide suitable for in vivo applications. Bioconjugation of the peptide to HA derivative increases its half life in circulation contributing for a high efficacy. More over, conjugate of HA derivative and peptide which is treated with hyaluronidase shows increased bioactivity. And also, in contrast to PEGylation, HA derivative can be conjugated with many numbers of peptide molecules per single HA derivative chain, which enables multiple action of peptide drugs.

The invention relates to disulfide-rich peptide molecules which inhibit binding of α4β7 to the mucosal addressin cell adhesion molecule (MAdCAM) in vivo, and show high selectivity against α4β1 binding.

The invention relates to thioether monomer and dimer peptide molecules which inhibit binding of α4β7 to the mucosal addressing cell adhesion molecule (MAdCAM) in vivo.

The invention discloses a preparation method of a DNA (Deoxyribonucleic Acid) targeting nano medicine-carrying molecule for a brain tumor. The preparation method comprises the steps that a DNA single strand is added to a Tris-MgCl solution and mixed, and reacts to form a DNA tetrahedron solution; the DNA tetrahedron solution and a targeting peptide solution are added to a mixed solution of a PBS (Phosphoric acid solution), a CuSO4 solution, a TCEP (Tris-(2-carboxyethyl)-phosphine) solution and a TBTA (Tert-Butyl 2,2,2-trichloroacetimidate) solution, and subjected to thermostatic reaction; a targeting DNA tetrahedron solution is obtained; a tumor medicine is added to the targeting DNA tetrahedron solution; constant temperature oscillation, centrifugation, and supernatant removal are conducted; and an obtained sediment is the DNA targeting nano medicine-carrying molecule. According to the preparation method, peptide molecules having specificity in the tumor are modified on DNA tetrahedrons via a point-and-click reaction, so that construction of a targeting DNA nano-carrier is realized; and the targeting DNA medicine-carrying molecule has extremely high specific recognition function, low cytotoxicity and good structural stability.

The invention discloses a method for preparing oat active peptide. The method comprises the following steps of: adding water into oat bran used as a raw material and extracting, adding amylase and beta-glucanase and performing enzymolysis, performing alkaline extraction of oat protein, performing centrifugal separation, performing isoelectric precipitation on centrifugate, centrifuging to obtain oat protein, redissolving the oat protein, performing selective enzymatic hydrolysis to obtain oat polypeptide, ultrafiltering and enriching the oat polypeptide, and freeze-drying to obtain the oat active peptide powder. The molecular weight of the obtained oat small-molecule peptide is 1,000 to 5,000Da, and the purity is 80 to 95 percent. The oat active peptide can inhibit angiotensin converting enzyme (ACE), has the effects of preserving moisture, promoting metabolism of cells and the like, and can be widely applied to the fields of blood pressure reducing health-care foods.

The invention discloses an immobilized protease and an application method of the immobilized protease in preparation of milk casein peptides. The main preparation method of the immobilized protease is as follows: firstly, immobilized carrier chitosan microspheres are prepared; secondly, the chitosan microspheres are added into protease solution; after oscillation and absorption, glutaraldehyde solution is dripped into the solution; after cross linking, the immobilized protease is obtained. The method for preparation of the milk casein peptides adopts the immobilized protease to hydrolyze the milk caseins. The immobilized protease can be reused for a plurality of times, thereby the use efficiency is high and the production cost is effectively reduced; moreover, the immobilized protease has the advantages of convenient product separation, low cost, mild production conditions and easy control of the hydrolysis degree. The milk casein peptide product prepared has the advantages of high peptide content, superior peptide molecule weight distribution range, good quality, no bitterness, high safety and so on. The content (according to the dry basis) of the milk casein peptides prepared by the method is as high as 75.05 percent by detection; the peptide molecule weight distribution range is that: the molecular weight which is lower than 2409 daltons reaches 97.79 percent.

Wolfberry glycopeptide composition and methods for preparing and using the same, the part with a molecular weight distribution of 1000 Da to 10000 Da of the wolfberry glycopeptide accounts for 50-85% on the HPLC differential refractive index map; and the protein content is 20-35% weight percentage, neutral polysaccharide content is 20-35% weight percentage. Optionally, the uronic acid content is 5-20% weight percentage. The preparation method of the present invention removes part of insoluble impurities by a heating flocculation method, instead of the conventional organic solvent extraction process, and without using any organic solvents in the whole process.

The invention provides a polypeptide having the molecular weight of 3321.6 Da and having an amino acid sequence as shown in SEQ ID NO.1. The invention also provides six derivatives of the polypeptide. The polypeptide and the derivatives thereof provided by the invention have efficient broad-spectrum bacteriostatic effect on gram positive bacteria and gram negative bacteria (especially having good killing effect on anti-clindamycin anaerobic propionibacterium acnes), fungi and yeasts, and have high activity (the concentration for killing the propionibacterium acnes in vitro can be only 0.125 mg/L). The polypeptide and the derivatives thereof can be applied in preparation of microbial bacterial and fungal infection-controlling and anti-inflammatory products, wherein the products include externally-applied disinfectants, anti-bacterial agents, wound-protection or infection-prevention dressings, acne treating drugs, skin care products, cosmetics and the like. The polypeptide is designed and synthesized based on a tryptophan bromide-containing fragment of a marine biological sea urchin, has stronger bacteria inhibiting or killing and anti-inflammatory effects and better stability, and can be used as an antibiotic substitute.