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54 results about "In vitro binding" patented technology

CTL (Cytotoxic T Lymphocyte) epitope peptide of foot-and-mouth disease virus type O and screening method of CTL epitope peptide

The invention discloses a CTL (Cytotoxic T Lymphocyte) epitope peptide of a foot-and-mouth disease virus type O as well as a screening method and application of the CTL epitope peptide. The CTL epitope peptide is composed of nine amino acid residues, and the amino acid sequence of the CTL epitope peptide is as follows: Ala-Thr-Arg-Val-Thr-Glu-Leu-Leu-Tyr. The epitope peptide has relatively strong combining capacity with SLA (Swineleukocyteantigen)-I proteins from various strains of swine and can induce cytotoxic immune response so as to be suitable for preparing vaccines for preventing and controlling foot-and-mouth disease viruses of various strains of swine and wide in application range. According to the invention, a CTL simulated epitope peptide of a foot-and-mouth disease virus is combined with a single-chain molecule of SLA-I of six strains of constructed swine in vitro, thus a polypeptide which can be combined with a complex can be screened through mass spectrum measurement; in addition, a simulated epitope peptide which can be induced to generate the immune response capacity of T cells is determined through ELISPOT (Enzyme-Linked Immunospot Assay) detection. The invention provides a method for screening and authenticating the CTL epitope of the foot-and-mouth disease virus in a large scale, and lays the foundation for researching and preparing a multi-epitope vaccine of a foot-and-mouth disease.
Owner:DALIAN UNIV

Type A foot-and-mouth disease CTL (cytotoxic T lymphocyte) epitope peptide and screening method thereof

The invention discloses type A foot-and-mouth disease CTL (cytotoxic T lymphocyte) epitope peptide and a screening method thereof. The CTL epitope peptide consists of nine amino acid residues, and has an amino acid sequence of Ala-Met-Leu-Arg-Ala-Ala-Thr-Tyr-Tyr. The epitope peptide has stronger combining capability with SLA (swine leukocyte antigen)-?? proteins from pigs with different strains and causees cell toxicity immune response, and is applicable to the preparation of prevention and treatment vaccines for foot-and-mouth disease virus of pigs with various strains and wide in application range. According to the type A foot-and-mouth disease CTL epitope peptide and the screening method thereof, constructed SLA-I single-stranded molecules of pigs with six strains are utilized for in vitro combination with CTL simulated epitope peptide of foot-and-mouth disease virus, polypeptide which can be combined with complex is determined and screened by using a mass spectrum, and simulated epitope peptide which can induce the production of T cell immune response capability is determined through ELISPOT (enzyme linked immunospot assay) detection. The invention provides a method for screening and identifying a large number of foot-and-mouth disease virus CTL epitopes in the future, and lays a foundation for the development of multi-epitope vaccines for the foot-and-mouth disease of pigs.
Owner:DALIAN UNIV

Method for superfine grinding of bamboo shoot dietary fibers

The invention discloses a method for superfine grinding of bamboo shoot dietary fibers. The method comprises the steps of preparing high-quality dietary fibers (compound enzyme enzymolysis process) and performing superfine grinding treatment. The condition for preparing the dietary fibers according to the compound enzyme enzymolysis process is mild, the extracted dietary fibers are high in biological activity, and meanwhile, the content of the soluble dietary fibers is increased to that of high-quality dietary fibers. The dietary fibers acquired according to an air jetting milling method have the grain size of 8.87mu m and the specific surface area of 1.29m<2>/g. The capacities of the bamboo shoot dietary fibers after superfine grinding for in-vitro binding with cholesterol, sodium cholate and nitrite are obviously enhanced and are respectively 11.95mg/g, 141.87mg/g and 1716.78mu g/g. The air jetting milling not only can obviously reduce the grain size of the bamboo shoot dietary fibers and can solve the problem of rough taste of the dietary fibers but also can increase the content of the soluble dietary fibers and can enhance the functional character of the dietary fibers, so that the air jetting milling is the optimal manner for the superfine grinding of the bamboo shoots at present.
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY

[18f]fluoromethyl group-introduced radiotracer for positron emission tomography for targeting brain neuroinflammation, synthesis thereof, and method for evaluating biological results using same

The present invention relates to an [18F]fluoromethyl group-introduced radiotracer for positron emission tomography for targeting brain neuroinflammation, a synthesis thereof, and a method for evaluating biological results using the same. In the present invention, a fluoromethyl group-introduced fluorine-18 labeled radiotracer was prepared by introducing [18F]fluoroiodomethane, in which a prosthetic group diiodomethane is labeled with fluorine-18, into PBR28-OH through two stages, or substituting fluorine-18 using a triazolium triflate precursor in one stage at high yield. It was confirmed that, as a result of comparison and evaluation with exiting known [11C]PBR28 in view of in vitro binding affinity, fat affinity, and pharmacodynamic characteristics in a brain neuroinflammation model, the fluoromethyl group-introduced fluorine-18 labeled radiotracer had similar binding affinity and fat affinity to [11C]PBR28. Further, it was confirmed from the PET image comparison and evaluation in the brain neuroinflammation model that the fluoromethyl group-introduced fluorine-18 labeled radiotracer exhibited excellent selective / specific absorption in the inflammatory region more quickly and had high stability at the brain neuroinflammation site. According to the present invention, with respect to the synthesis of the novel fluoromethyl group-introduced fluorine-18 labeled radiotracer for PET targeting brain neuroinflammation and the diagnosis of brain neuroinflammation diseases, fluorine-18 having a relatively longer half-life than [11C]PBR28 was capable of being excellently labeled through the minimum structural change, and its excellent selective and specific imaging and pharmacodynamic advantages were verified, and thus a useful radiotracer for PET targeting brain neuroinflammation can be expected.
Owner:BIO IMAGING KOREA

Method for making steamed pork belly with preserved greens by taking streaky pork of Suhuai pigs as raw material

ActiveCN107529414AGuaranteed nutritional qualityGuaranteed Flavor QualityFood scienceIn vitro digestionSolid-phase microextraction
The invention relates to the technical field of meat product processing, in particular to a method for preparing pickled meat with pickled vegetables using Suhuai pig pork belly as a raw material. The processing method of the present invention uses Suhuai pig pork belly and Shaoxing preserved vegetables as raw materials. The pork belly is cut, colored and sliced, and the preserved vegetables are washed and fried, followed by steps such as sauce adjustment, steaming, packaging, pre-cooling, and quick-freezing. Pork with preserved vegetables. The in vitro digestion model is used to simulate the digestion of food in the gastrointestinal tract in vivo, and the bioavailability of food is reflected by the degree of food digestion. Flavor is an important indicator of food sensory quality, which directly affects consumers' choices. The selection of raw materials is the basis of meat processing. The invention combines in vitro digestion, headspace solid-phase microextraction-gas chromatography and sensory evaluation to optimize the process of raw material varieties. The purpose of the present invention is to produce standardized pickled meat with pickled vegetables with excellent sensory quality and nutritional quality, so as to meet consumers' requirements for food safety, health, convenience and speed.
Owner:NANJING AGRICULTURAL UNIVERSITY

Applications of NY-ESO-1 as molecule adjuvant in enhancement of Art v1 (wtArt) allergen immune reaction

The present invention relates to the field of biomedicine, particularly to applications of NY-ESO-1 as a molecule adjuvant in enhancement of an Art v1 (wtArt) allergen immune reaction. According to the present invention, it is explored that the NY-ESO-1 protein can form a poly-structure even in a loading buffer containing beta-mercaptoethanol having a conventional concentration, the polymerization reaction of the NY-ESO-1 is mediated by the intermolecular disulfide bond, the binding of the NY-ESO-1 and the human/murine immature dendritic cells in vitro is related to the polymerization structure of the NY-ESO-1, TLR4 affects the in vitro binding of the NY-ESO-1 and the DC cells in bone marrow, the binding of the NY-ESO-1 and the human/murine immature dendritic cells can be performed through the action of calreticulin, the polymer oligomerization reduces the binding of TLR4 and NY-ESO-1, the polymer structure of the NY-ESO-1 and TLR4 in host participate into an immunoglobulin antibody reaction, and the improving of the art V1 (wtArt) and CA9 gene immunogenicity depends on the NY-ESO-1 gene fusion expression; and the test results prove that the NY-ESO-1 can be adopted as the molecule adjuvant in enhancement of the Art v1 (wtArt) allergen immune reaction.
Owner:宁波美丽人生医药生物科技发展有限公司

Anti-inflammatory inhibitor screening model taking MyD88TIR (myeloid differentiation primary response protein 88 Toll/interleukin-1 receptor) dimerization as target point and application thereof

The invention relates to an anti-inflammatory inhibitor screening model taking MyD88TIR (myeloid differentiation primary response protein 88 Toll/interleukin-1 receptor) dimerization as a target point and application thereof. The anti-inflammatory inhibitor screening model taking the MyD88TIR dimerization as the target point is characterized in that: an MyD88TIR builds fusion protein plasmids together with protein genes GFP/RFP (Green fluorescent protein/Red fluorescent protein) of a fluorescence donor and a fluorescent receptor, and the fusion protein plasmids are transfected into mammalian cells to build dual-positive expression cell strains; the FRET (fluorescence resonance energy transfer) phenomenon can be detected; when an MyD88TIR dimerization inhibitor exists in a culture medium, the cell strains which depend on dual-positive to express GFP-MyD88-TIR and RFP-MyD88-TIR are suggested, and whether the inhibitor directly blocks the interaction of the TIRs or not can be further determined according to in vitro binding analysis; and combined with the fluorescent FRET blocking results of eukaryotic cells and prokaryotic expression recombinant protein interaction analysis, the MyD88TIR dimerization inhibitor can be determined. The model can be used for widely screening commercialized small molecule libraries, self-prepared natural product components, or various chemical compounds, and modifiers, from which MyD88 dimerization inhibitory compounds are obtained to participate in the drug screening of MyD88 signal pathway-dependent chronic inflammation and autoimmune diseases.
Owner:NORTHEAST NORMAL UNIVERSITY

N-(1,2,3,4-tetrahydronaphthalen-1-yl)-4-phenyl-1-piperazinealkylamide derivatives, and therapeutic use thereof as 5-HT7 receptor ligands

A series of N-(1,2,3,4-tetrahydronaphthalen-1-yl)-4-aryl-1-piperazinealkylamides was prepared and their affinity for serotonin 5-HT7, 5-HT1A, and 5-HT2A receptors was measured using in vitro binding assays. In relation to 5-HT7 receptor affinity, receptor binding studies indicated that: (i) the optimal alkyl chain length was five methylenes; (ii) an unsubstituted 1,2,3,4-tetrahydronaphthalenyl nucleus was selected for further substitutions; and (iii) the substitution pattern of the aryl ring linked to the piperazine ring played a significant role. Several compound with high affinity for 5-HT7 receptors were identified. Among them, 4-(2-methoxyphenyl)-N-(1,2,3,4-tetrahydronaphthalen-1-yl)-1-piperazinehexanamide (28), 4-(2-acetylphenyl)-N-(1,2,3,4-tetrahydronaphthalen-1-yl)-1-piperazinehexanamide (34), 4-(2-methylthiophenyl)-N-(1,2,3,4-tetrahydronaphthalen-1-yl)-1-piperazinehexanamide (44), 4-(2-hydroxyphenyl)-N-(1,2,3,4-tetrahydronaphthalen-1-yl)-1-piperazinehexanamide (46), 4-(2-methylphenyl)-N-(1,2,3,4-tetrahydronaphthalen-1-yl)-1-piperazinehexanamide (49) were assayed for the 5-HT7 receptor mediated relaxation of substance P-induced guinea-pig ileum contraction. Compounds 28, 44, and 49 behaved as full agonists, compound 34 as a partial agonist, whereas derivative 46 acted as an antagonist.
Owner:UNIV DEGLI STUDI DI BARI
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