39 results about "Peptide array" patented technology

The methods of the present invention provide methods for manufacturing a master substrate and methods for manufacturing replica arrays from the master substrate. The methods may be used, for example, directly to manufacture or “print” peptide arrays from a DNA array; however, the methods are applicable to a wide range of manufacturing applications for use any time multiple copies of an array needs to be printed.

The methods of the present invention provide methods for manufacturing a master substrate and methods for manufacturing replica arrays from the master substrate. The methods may be used, for example, directly to manufacture or “print” peptide arrays from a DNA array; however, the methods are applicable to a wide range of manufacturing applications for use any time multiple copies of an array needs to be printed.

The present invention relates to the use of direct-write lithographic printing of proteins and peptides onto surfaces. In particular, the present invention relates to methods for creating protein and peptide arrays and compositions derived therefrom. Nanoscopic tips can be used to deposit the peptide or protein onto the surface to produce a pattern. The pattern can be dots or lines having dot diameter and line width of less than 1,000 nm. The tips and the substrate surfaces can be adapted for the peptide and protein lithography.

Peptide arrays and uses thereof for diagnostics, therapeutics and research. Ultra high density peptide arrays are generated using photolithography, such as using photoresist techniques.

The present invention relates to arrays of peptidic molecules and the preparation of peptide arrays using focused acoustic energy. The arrays are prepared by acoustically ejecting peptide-containing fluid droplets from individual reservoirs towards designated sites on a substrate for attachment thereto.

The 2-(2-nitrophenyl)propyloxycarbonyl (NPPOC) group has been introduced as a photolabile amino protecting group for amino acids to be used as building blocks in photolithographic solid-phase peptide synthesis. NPPOC-protected amino acids were found to be cleaved in the presence of UV light about twice as fast as the corresponding o-nitroveratryloxycarbonyl (NVOC)-protected amino acids. The protected amino acids are of particular use in the synthesis of peptide arrays.

Health is a complex state that represents the continuously changing outcome of nearly all human activities and interactions. The invention provides efficient methods and arrays for health monitoring, diagnosis, treatment, and preventive care. The invention monitors a broad range of identifying molecules from a subject, such as circulating antibodies, and the invention evaluates a pattern of binding of those molecules to a peptide array. The characterization of the pattern of binding of such molecules to a peptide array with the methods of the invention provide a robust measure of a state of health of a subject.

An improved peptide library preparation method is provided for constructing complete virtual peptide libraries such as a complete virtual tripeptide library, tetrapeptide library, pentapeptide library, hexapeptide library, heptapeptide library, or a complete octapeptide library, etc. The method includes constructing an expression vector for the expression of cyclic peptides. Each cyclic peptide displays an array of peptides of different sizes and sequences, and the number of cyclic peptides needed for constructing a complete virtual peptide library can be dramatically reduced compared with conventional chemical peptide synthesis. Furthermore, the cyclic peptide libraries can be readily reproduced by the expression and purification of the cyclic peptides using the constructed gene libraries.

The present application provides arrays for use in immunosignaturing and quality control of such arrays. Also disclosed are peptide arrays and uses thereof for diagnostics, therapeutics and research.

The invention provides a method for preparing an anti-human R47H-TREM2 mutant human monoclonal antibody. The method comprises the following steps that (1) a polypeptide antigen is synthesized, wherein 201 6-15aa R47H-TREM2 polypeptides are artificially synthesized; antigenic determinants are expanded to both sides with the R47 of TREM2 as the center and around TREM2 gene mutation targets, wherein each polypeptide sequence is staggered by 1-2 aa; and HPLC C-18 reverse column purification and freeze drying are carried out; (2) an R47H-TREM2 mutant polypeptide antigen array (Peptide Array) is prepared; (3) CD22+B-cells are collected; (4) cell culturing is carried out; (5) B-cell immortalization is carried out; and (6) B-cell positive monoclone is screened with the R47H-TREM2 mutant polypeptide antigen array. According to the invention, the human monoclonal antibody is prepared with the B-cell immortalization technology. The human monoclonal antibody has important early clinical diagnosis and therapeutic potentials on Alzheimer's disease (AD) patients.

Peptide inhibitors of β-lactamases have been identified by the synthesis of peptide arrays using synthesis SPOT technology. These peptide inhibitors of β-lactamase have activity against a broad spectrum of β-lactamases and are useful in a variety of applications.

The present application provides arrays for use in immunosignaturing and quality control of such arrays. Also disclosed are peptide arrays and uses thereof for diagnostics, therapeutics and research.

A method is provided for the treatment of a condition mediated by raf kinase, which includes administering a guanylhydrazone to a subject in need thereof. A method is also provided, which includes modulating or inhibiting signal transduction in a c-raf pathway with at least one guanylhydrazone. Another method is provided, which includes contacting one or more human mononuclear cells with at least one guanylhydrazone and at least one lipopolysaccharide to obtain one or more treated cells; contacting at least one selected from the group including said treated cells, one or more lysates thereof, and combinations thereof, with at least one surface-bound peptide in a surface-bound peptide array; and selectively modulating or inhibiting the phosphorylation of the surface-bound peptide.

The disclosed embodiments concern non-invasive methods, and apparatus, and systems for identifying infections. The methods are predicated on identifying discriminating peptides present on a peptide array, which are differentially bound by the different mixtures of antibodies present in samples from subjects consequent to an infection relative to binding of mixtures of antibodies present in reference subjects.

Described herein are methods and devices for diagnosing chronic fatigue syndrome using peptide arrays, and providing a prognosis to patients.

A DNA methylation editing kit comprises: (1) a fusion protein of inactivated CRISPR-associated endonuclease Cas9 (dCas9) having no nuclease activity and a tag peptide array in which plural tag peptides are linked by linkers, or an RNA or DNA coding therefor; (2) a fusion protein(s) of a tag peptide-binding portion and a methylase or demethylase, or an RNA(s) or DNA(s) coding therefor; and (3) a guide RNA(s) (gRNA(s)) comprising a sequence complementary to a DNA sequence within 1 kb of a desired site of methylation or demethylation, or a DNA(s) expressing the gRNA(s).

The present invention relates to a protein or peptide printing method, comprising (a) a step for preparing nucleic acids and a cell-free protein synthesis system in an engraved plate composed of microscopic grooves having a specific opening shape, (b) a step for superimposing a substrate on the engraved plate so as to contact a protein or peptide to be synthesized in the microscopic grooves, and (c) a step for synthesizing the protein or peptide from the nucleic acids using the cell-free protein synthesis system in the microscopic grooves, and immobilizing the protein or peptide on the substrate along the specific opening shapes of the microscopic grooves.

Provided herein are in situ generated conformationally constrained peptide arrays, methods for synthesizing such arrays, and methods, systems and assays comprising the use of the synthesized constrained peptide arrays for characterizing protein-target Interactions including: antibody-target interactions, receptor agonist interactions, receptor antagonist interactions, enzyme substrate interactions, enzyme inhibitor interactions, and other protein-protein interactions.

The disclosed embodiments concern non-invasive methods, and apparatus, and systems for identifying infections. The methods are predicated on identifying discriminating peptides present on a peptide array, which are differentially bound by the different mixtures of antibodies present in samples from subjects consequent to an infection relative to binding of mixtures of antibodies present in reference subjects.

A method of preparing a species-specific phosphorylation site peptide array for a target organism comprising: a) selecting a plurality of known non-target organism (NTO) phosphorylation site sequences and cognate known NTO phosphorylation polypeptide sequences from one or more NTO, each of the known NTO phosphorylation site sequences comprising at least 5 residues and less than 30 residues; b) identifying a matching target organism (TO) phosphorylation site sequence and cognate TO phosphorylation polypeptide sequence for one or more of the known NTO phosphorylation site sequences; c) determining the matching TO phosphorylation site sequences that correspond to orthologue polypeptides of the cognate known NTO phosphorylation polypeptide sequences; d) selecting the matching TO phosphorylation site sequences determined to correspond to orthologue polypeptides for inclusion on the array; wherein the matching TO phosphorylation site sequences that correspond to orthologue polypeptides are determined by calculating, for each matching phosphorylation site sequence identified in b), a similarity value between the TO phosphorylation polypeptide sequence corresponding to the TO phosphorylation site sequence and a TO polypeptide sequence matching the cognate known NTO polypeptide sequence.

A DNA methylation editing kit comprises: (1) a fusion protein of inactivated CRISPR-associated endonuclease Cas9 (dCas9) having no nuclease activity and a tag peptide array in which plural tag peptides are linked by linkers, or an RNA or DNA coding therefor; (2) a fusion protein(s) of a tag peptide-binding portion and a methylase or demethylase, or an RNA(s) or DNA(s) coding therefor; and (3) a guide RNA(s) (gRNA(s)) comprising a sequence complementary to a DNA sequence within 1 kb of a desired site of methylation or demethylation, or a DNA(s) expressing the gRNA(s).

Health is a complex state that represents the continuously changing outcome of nearly all human activities and interactions. The invention provides efficient methods and arrays for health monitoring, diagnosis, treatment, and preventive care. The invention monitors a broad range of identifying molecules from a subject, such as circulating antibodies, and the invention evaluates a pattern of binding of those molecules to a peptide array. The characterization of the pattern of binding of such molecules to a peptide array with the methods of the invention provide a robust measure of a state of health of a subject.

The present invention is related to the fields of molecular biology, virology, immunology and medicine. The invention provides a composition comprising an ordered and repetitive antigen or antigenic determinant array, and in particular a RANKL protein, RANKL fragment or RANKL peptide-VLP-array. More specifically, the invention provides a composition comprising a virus-like particle and at least one RANKL protein, RANKL fragment or RANKL peptide bound thereto. The invention also provides a process for producing the conjugates and the ordered and repetitive arrays, respectively. The compositions of the invention are useful in the production of vaccines for the treatment of bone diseases and as a pharmaccine to prevent or cure bone diseases and to efficiently induce immune responses, in particular antibody responses. Furthermore, the compositions of the invention are particularly useful to efficiently induce self-specific immune responses within the indicated context.

Methods and applications for relating the structure of a molecule in a library to its function are described. Embodiments described herein relate structure to function by considering the covalent structure of the molecule, the components of that structure that are common to many molecules in the library, and the properties of those components as they relate to the function in question. Applications include, for example, enhancement and amplification of the diagnostic and prognostic signals provided by peptide arrays for use in analyzing the profile of antibodies in the blood produced in response to a disease, condition or treatment.

According to one aspect, the present disclosure provides a method of identifying a substrate of a transglutaminase using a peptide array comprising a plurality of peptides. The method includes the steps of contacting the peptides in the peptide array with the transglutaminase, allowing the transglutaminase to bind to the peptides, and identifying the substrate of the transglutaminase.

The present invention describes improved peptide library preparation methods for the construction of complete peptide libraries, such as complete tripeptide libraries, tetrapeptide libraries, pentapeptide libraries, hexapeptide libraries, heptapeptide libraries or complete octapeptide libraries Wait. The method includes constructing an expression vector for expressing the tagged peptide. Each tagged peptide contains peptide arrays of different sizes, and the number of peptides in the complete peptide library can be significantly reduced relative to conventional chemical peptide synthesis. In addition, libraries can be easily replicated. Improved peptide library preparation methods are particularly useful, for example, in the construction of complete pentapeptide libraries. Other related methods and related expression vectors are also described.

A DNA methylation editing kit comprises: (1) a fusion protein of inactivated CRISPR-associated endonuclease Cas9 (dCas9) having no nuclease activity and a tag peptide array in which plural tag peptides are linked by linkers, or an RNA or DNA coding therefor; (2) a fusion protein(s) of a tag peptide-binding portion and a methylase or demethylase, or an RNA(s) or DNA(s) coding therefor; and (3) a guide RNA(s) (gRNA(s)) comprising a sequence complementary to a DNA sequence within 1 kb of a desired site of methylation or demethylation, or a DNA(s) expressing the gRNA(s).

Methods and systems, including those employing machine learning, utilizing one or more algorithms for relating the structure of a molecule in a library to its function are described. Embodiments described herein relate structure to function by considering the covalent structure of the molecule, the components of that structure that are common to many molecules in the library, and the properties of those components as they relate to the function in question. Applications include, for example, enhancement and amplification of the diagnostic and prognostic signals provided by peptide arrays for use in analyzing the profile of antibodies in the blood produced in response to a disease, condition or treatment.