95 results about "Molecular function" patented technology

An electrochemical method for determining immunity of tumor marker includes forming microreaction cell, placing reference and counter electrode above it and fixing antigen molecular functioning film at pool bottom, connecting enzyme labelled antibody to pool bottom at time of only proper quantity of horseradish peroxidase to label tumor marker antibody, obtaining cataltyic current on working electrode by contacting free immune matter with electronic media and having positive ratio of the current to antigen. The microvolume immune determining chip is also disclosed.

The present invention relates to an imaging method with an OCT catheter for visualizing molecular functional processes in vulnerable plaques of a blood vessel of the blood vessel system of a patient, with OCT images of the contrast medium-marked vulnerable plaque being generated during continuously controlled movement of the light-emitting and light-absorbing OCT catheter head along the vulnerable plaque after the intravascular injection of a contrast medium into the blood vessel system and after the intravascular insertion of an imaging OCT catheter into the blood vessel comprising the vulnerable plaque.

Nature evolves biological molecules such as proteins through iterated rounds of diversification, selection, and amplification. The power of Nature and the flexibility of organic synthesis are combined in nucleic acid-templated synthesis. The present invention provides a variety of template architectures for performing nucleic acid-templated synthesis, methods for increasing the selectivity of nucleic acid-templated reactions, methods for performing stereoselective nucleic acid-templated reactions, methods of selecting for reaction products resulting from nucleic acid-templated synthesis, and methods of identifying new chemical reactions based on nucleic acid-templated synthesis.

Nature evolves biological molecules such as proteins through iterated rounds of diversification, selection, and amplification. The present invention provides methods, compositions, and systems for synthesizing, selecting, amplifying, and evolving non-natural molecules based on nucleic acid templates. The sequence of a nucleic acid template is used to direct the synthesis of non-natural molecules such as unnatural polymers and small molecules. Using this method combinatorial libraries of these molecules can be prepared and screened. Upon selection of a molecule, its encoding nucleic acid template may be amplified and / or evolved to yield the same molecule or related molecules for re-screening. The inventive methods and compositions of the present invention allow for the amplification and evolution of non-natural molecules in a manner analogous to the amplification of natural biopolymer such as polynucleotides and protein.

The invention relates to a molecular imprinting chemiluminescence sensor for detecting trace amount pesticide residues, belonging to the technical field of the detection of the pesticide residues. Theinvention also relates to a method for detecting the trace amount pesticide residues contained in agricultural product samples by using the molecular imprinting chemiluminescence sensor, which comprises the following steps: (1) selecting a functional monomer; (2) uniformly mixing a template molecule, the functional monomer, a cross linker, a pore-forming agent, an initiating agent and a silicon source to prepare an MIPs collosol according to a mole ratio of 0.1-1 to 1-10 to 5-25 to 20-60 to 0.05-0.15 to 20-50; (3) preparing a quantum dot material solution; and (4) modifying the MIPs collosoland quantum dot materials to the surface of a millipore plate to manufacture the chemiluminescence sensor by a layer-layer self-assembly surface modification technique. The invention has the advantages of high specificity and sensitivity, fast detection, low cost, good repeatability and convenient field detection on the detection of the pesticide residues.

The invention provides a preparation method and use of a graphene oxide surface molecularly imprinted sol-gel polymer and relates to the technical field of combination of polymer material science and chemical sensors. Graphene oxide as a carrier and siloxane as a functional monomer and a cross-linking agent are subjected to sol-gel method treatment in an aqueous solution at a normal temperature so that the graphene oxide surface molecularly imprinted sol-gel polymer is obtained, and the graphene oxide surface molecularly imprinted sol-gel polymer can be used in the field of electrochemical sensors and can realize fast analysis detection of a template molecule. The preparation method has the simple process of mixing the carrier, the template molecule, the functional monomer, the cross-linking agent and the solvent according to a certain ratio, has a low cost, saves energy and is environmentally friendly. The graphene oxide surface molecularly imprinted sol-gel polymer-based electrochemical sensor has the advantages of rapid response to the imprinted molecule, good selectivity, high sensitivity and good stability.

A method of generating a molecule-function network including bio-events by carrying out a connect search using a biomolecule-linkage database including information on the bio-events, and a method of predicting a pathway between an arbitrary biomolecule and an arbitrary bio-event in said network or a method of predicting the bio-events to which an arbitrary biomolecule in said network is related.

The invention discloses a preparation method of a nylon-coated high-molecular polymer powder material. The preparation method of the nylon-coated high-molecular polymer powder material comprises the following steps: firstly heating a mixture of nylon resin, an ethyl alcohol solvent, high-molecular polymer powder and an antioxidant in a sealed container, dissolving nylon in the solvent, then gradually cooling, gradually crystallizing the nylon resin by taking high-molecular polymer particles as the core, coating the surfaces of the high-molecular polymer particles with the nylon resin, carrying out vacuum drying and ball milling, and screening, so that powder with certain particle diameter distribution is selected as the nylon-coated high-molecular polymer powder material. The high-molecular polymer powder / nylon resin composite material prepared by the method is excellent in sintering furnace and high in fluidity; the material has a small amount of nylon; a selective laser sintering (SLS) initial shape blank has relatively high accuracy and strength, so that the material is very suitable for indirectly manufacturing high-molecular function parts by virtue of SLS.

The invention discloses a preparation method of a CdTe@SiO2 quantum dot surface monoamine neurotransmitter molecularly imprinted polymer. The preparation method comprises the following steps of: synthesizing CdTe@SiO2 quantum dots in a water phase, carrying out rotary evaporation till water is completely volatized, and washing off unreacted substances by absolute ethyl alcohol; adding the obtained CdTe@SiO2 quantum dots to a pore-foaming agent, sequentially adding template molecules, functional monomers and a crosslinking agent after uniform ultrasonic dispersion, and stirring and reacting for 20 hours under the protection of N2; centrifuging a reaction liquid, discarding a supernatant, and washing obtained solids to remove the template molecules to obtain the CdTe@SiO2 quantum dot surface monoamine neurotransmitter molecularly imprinted polymer. The material synthesized by the method has the advantages that a quantum dot fluorescent probe is high in sensitivity and simple and convenient to detect and has the characteristics that the molecularly imprinted polymer is high in selectivity and affinity and can be directly used for determining monoamine neurotransmitters in biological fluids.

An apparatus is provided for performing an chemical, biochemical, or biological assay on a sample comprising: a microfluidic assay cartridge (1) that contains at least one sample inlet well (2) configured to receive a sample; and a microfluidic sub-unit (3) associated with the microfluidic assay cartridge (1) and comprising microfluidic channels (8), micro-valves (4, 4a, 9) and at least one separate and fluidicly-isolated isolation channel (5), and at least one hollow element (14); the at least one hollow element (14) being functionalized with a capture moiety or molecules (15) so as to form at least one reaction vessel (19); the microfluidic channels (8) and micro-valves (4, 4a, 9) configured to respond to signaling containing information about performing the assay and to controllably receive the sample and at least one reagent in the at least one reaction vessel (19), and to provide from the at least one reaction vessel (19) light containing information about the assay performed on the sample inside the at least one reaction vessel (19) as a result of said at least one reagent.

Some embodiments of the present disclosure are directed to systems, methods and devices for controlling the transit of a molecule across a nanopore. Some embodiments are directed to a device comprising a first compartment, a second compartment, a first pair of electrodes comprising a first electrode provided in the first compartment and a second electrode provided in the second compartment, a partition separating the first compartment from the second compartment, an orifice provided in the partition, a second pair of electrodes arranged proximate the orifice, the second pair of electrodes being functionalized with molecules, and a tunnel gap comprising the spacing between the second pair of electrodes.

The present invention relates to compounds, compositions, and methods for the study, diagnosis, and treatment of traits, diseases and conditions that respond to the modulation of Proprotein Convertase Subtilisin Kexin 9 (PCSK9) gene expression and / or activity. The present invention is also directed to compounds, compositions, and methods relating to traits, diseases and conditions that respond to the modulation of expression and / or activity of genes involved in Proprotein Convertase Subtilisin Kexin 9 (PCSK9) gene expression pathways or other cellular processes that mediate the maintenance or development of such traits, diseases and conditions. Specifically, the invention relates to double stranded nucleic acid molecules including small nucleic acid molecules, such as short interfering nucleic acid (siNA), short interfering RNA (siRNA), double-stranded RNA (dsRNA), micro- RNA (miRNA), and short hairpin RNA (shRNA) molecules capable of mediating RNA interference (RNAi) against Proprotein Convertase Subtilisin Kexin 9 (PCSK9) gene expression, including cocktails of such small nucleic acid molecules and lipid nanoparticle (LNP) formulations of such small nucleic acid molecules. The present invention also relates to small nucleic acid molecules, such as siNA, siRNA, and others that can inhibit the function of endogenous RNA molecules, such as endogenous micro-RNA (miRNA) (e.g, miRNA inhibitors) or endogenous short interfering RNA (siRNA), (e.g., siRNA inhibitors) or that can inhibit the function of RISC (e.g., RISC inhibitors), to modulate gene expression by interfering with the regulatory function of such endogenous RNAs or proteins associated with such endogenous RNAs (e.g., RISC), including cocktails of such small nucleic acid molecules and lipid nanoparticle (LNP) formulations of such small nucleic acid molecules. Such small nucleic acid molecules and are useful, for example, in providing compositions to prevent, inhibit, or reduce metabolic diseases.

The invention discloses a method for establishing a pancreatic cancer miRNA prognosis model and screening a targeted gene. The model comprises hsa-mir-424, hsa-mir-126, hsa-mir-3613 and hsa-mir-4772,nine key genes are identified, and the nine key genes comprise MMP14, ITGA2, THBS2, COL1A1, COL3A1, COL11A1, COL6A3, COL12A1 and COL5A2. According to the method for establishing the pancreatic cancermiRNA prognosis model, by means of TCGA and GEO databases, data is subjected to multi-step analysis through a plurality of R language installation packages and combines with clinical information, a Cox proportional risk regression model is established to search for prognosis biomarkers, the targeted gene of miRNA is predicted, the key genes related to pancreatic cancer are found out by utilizing Cytoscape, and related molecular functions and action mechanisms of the key genes are predicted through KEGG and GO analysis so as to search for new treatment targets and prognosis markers of pancreatic cancer patients.

The invention discloses a prognosis marker for the lung cancer and application thereof. The long chain non-coding RNA gene RP11-434D9.1 of the marker is quite related to the prognosis period of patients with the lung cancer, through the marker and expression for detecting the marker, lung cancer prognosis is rapidly, accurately and conveniently predicted, the grading and layering of lung cancer risks are realized according to molecular levels, and patients with different grades of risks are separated obviously. Through co-expression analysis, 238 genes related to the long chain non-coding RP1-434D9.1 are found out, through an enrichment analysis on GO and KEGG pathways of the 238 genes, the molecular functions of the long-chain non-coding RP1-434D9.1 are found out, and important biologicalexperiment clues are provided for improving prognosis molecular diagnosis of the patients with the lung cancer and related medicine targets.

The invention discloses an application of taking oligopeptide and derivatives thereof as a template molecule, and an imprinting technology based preparation method of an angiotensin synthetic receptor. The template molecule comprises any section of a peptide bond at a nitrogen end or a carbon end of an angiotensin II, and derivatives thereof, or any section of the peptide bond at the nitrogen end or the carbon end of an angiotensin I and the derivatives thereof. The application takes the template molecule as an imprint to prepare the angiotensin synthetic receptor; the angiotensin acceptor is prepared in a way that the template molecule, a function monomer, a cross-linking agent, a surface-active agent and the like are mixed according to a certain rate, and then an initiator is added. The acceptor is good in biocompatibility, can high selectively capture and neutralize the angiotensin II and the angiotensin I, and cuts off functions of the angiotensin II and the angiotensin acceptor (AT1) as well as functions of the angiotensin I and angiotensin converzyme (ACE), so as to control the blood pressure. The acceptor can be applied to separation, concentration and measuring of the angiotensin I or II.

The invention relates to an algal toxin molecular imprinting chemoreceptor sensor. The sensor comprises a three-electrode system, wherein a glassy carbon electrode is a work electrode, a platinum wire electrode is an auxiliary electrode, and Ag / AgCl is a reference electrode; the glassy carbon electrode is modified with an algal toxin molecular imprinting film which comprises algal toxin mixed template modules, function monomers, crosslinking agents and photoinitiators in the mole ratio of 1: (20-50): (10-20): (0.5-1.5). The invention further relates to a preparation method of the sensor and an application of the sensor for analysis and detection of content of algal toxin in water. The sensor is used for analysis and detection of the algal toxin in the water, operation is convenient and fast, the flexibility is high, the operation cost is low, and the sensor is easy to control and automatic, can be used for quick screening of algal toxin in the water and has high use value in fields of environment monitoring and safety control of drinking water.

The invention relates to molecular imprinting material as well as preparation method and application thereof. The method comprises the following steps of: adding a template molecule, a functional monomer and a cross-linking agent into a container according to a proportion and then standing; adding a dispersing agent; finally adding an initiating agent and a hole-inducing agent into the container according to a proportion, controlling the temperature to react and obtaining a microparticle with the particle diameter ranging between 20 microns and 350 microns; refluxing and washing the obtained microparticle by a mixed solution of methanol / acetic acid in the container and detecting by GC (gas chromatography) till triazolam is not detected; washing by distilled water to neutrality; and drying in vacuum to constant weight to obtain the microparticle which is the needed triazolam molecular imprinting material. The prepared imprinting material can be directly used for enriching and separating the triazolam in urine, reduces the dosage of an organic solvent used when the triazolam is extracted by a liquid-liquid extracting method and is beneficial to the body health of an operator. The method does not need the protection of an inert gas, and the compounded material has the characteristics of small particle diameter and uniform distribution.

The present disclosure provides advantageous systems and methods for identifying molecular vulnerabilities in biological pathways and networks. The present disclosure generally involves conceptualizing a disease / disorder at the molecular level as a faulty physiological system, wherein one or more molecules in the complex intracellular signaling network are dysfunctional. This is accomplished by modeling a given physiological system as a digital logic circuit. More particularly, in exemplarily embodiments, binary logic equations are derived by analyzing the interactions between the input and output nodes of a target biological system. These equations are then used to produce a digital circuit representation for the system. Once a digital circuit representation is created, this circuit may advantageously be analyzed, using fault analysis techniques, in order to determine the vulnerability levels of the molecules of the targeted system.

An aquatic slurry of nano-TiO2 features its durable stability and dispersity without layering and depositing. Its preparing process features that the high-powder shearing-grinding apparatus is used to decoagulate the sintered TiO2 nanoparticles to become separated TiO2 nanoparticles, the proper molecular function groups and the surface covering agent are added for binding them with the acidic surface of TiO2, and the sterical hindering action and elestrostatic repelling action can make said TiO2 nanoparticles be dispersed in water-phase system stably.

The invention provides a preparation method of a halofuginone molecularly-imprinted solid-phase extraction small column and an application and relates to the field of analytical chemistry. The preparation method comprises the following steps of: taking halofuginone as a template molecule, dissolving the template molecule into a porogen and adding a functional monomer at a low temperature for prepolymerization; then, mixing according to the molar ratio of the template molecule: the functional monomer: a cross-linking agent of 1:3-6:15-30, and preparing molecularly-imprinted polymer micro-spheres in a manner of initiated polymerization at a low temperate by adopting a suspension polymerization method and filling the rinsed, sieved, eluted and dried micro-spheres in an empty column tube of the solid-phase extraction column by adopting a wet process; and later, using the micro-spheres rinsed by acetone and methanol in sequence into selective adsorption, enrichment and purification of the halofuginone remained in animal derived foods. Compared with the existing solid-phase extraction column, the halofuginone molecularly-imprinted solid-phase extraction column prepared by the invention has the characteristics of strong specificity, convenience and simplicity in preparation, good recognition performance, low cost, easiness for realization of required instruments and reaction conditions and the like.

The invention provides a multi-disease variable site analysis platform based on a function network. The multi-disease variable site analysis platform comprises a variable gene sequencing detection module, a function enrichment analysis module, a function network construction module, a function network mining module and a shared molecular network identification module, wherein the variable gene sequencing detection module is used for finishing the fundamental analysis of sequencing data; the function enrichment analysis module is used for utilizing a function enrichment analysis tool to analyze a variable gene function; the function network construction module is used for constructing the function network according to a function enrichment analysis result; the function network mining module is used for screening stable network modules from the function network; and the shared molecular network identification module is used for identifying molecular modules shared by different diseases according to the network module. The multi-disease variable site analysis platform analyses differences of different diseases on an aspect of genomic level, establishes an incidence relationship among the diseases from the perspective of molecular function, can systematically identity a shared modular function module among different diseases, effectively analyzes the nosogenesis of similar phenotype diseases, discloses differences between the diseases from the level of genome, increases the comprehensive understanding of the diseases and is favorable for clinic diagnosis and treatment.

The invention discloses a preparation method of a high molecule functionalized rare earth / mesoporous fluorescent nano-material. The preparation method comprises the following steps of: functionalizing organic high molecules with active functional groups by using a chemical modification and synthesis method at first; grafting to an inorganic and ordered mesoporous body SBA-15 or SBA-16 framework through a covalent bond; and then introducing rare earth europium ions to synthesize to obtain the highly ordered high molecule functionalized rare earth / mesoporous fluorescent nano-material with stable chemical and thermodynamic properties. The preparation method of the high molecule functionalized rare earth / mesoporous fluorescent nano-material is mild in experiment conditions that are easily controlled, an overall preparation system is easy to construct, is simple and convenient to operate, the obtained product has the advantages of stable quality, strong practicability and good repeatability.

The present invention discloses a sunset yellow molecular imprinting detection electrochemical sensor preparation method. In the method, magnetic graphene is used as a carrier, the surface is modified with 1-butyl-3-methyl imidazole hydrobromide ionic liquid and nano Au, and a sunset yellow molecular imprinting polymer is prepared by addition of a sunset yellow template molecule, a functional monomer and a crosslinking agent on the basis of the polymer. The glassy carbon electrode surface is modified with the sunset yellow molecular imprinting polymer for construction of a sunset yellow molecular imprinting detection electrochemical sensor. The electrochemical sensor constructed on the basis of the imprinted material has high sunset yellow detection selectivity and sensitivity, and can achieve rapid and sensitive detection of a real sample.

The invention relates to an el-b3a gene in a soybean growth period and a coding protein thereof. The gene sequence of the el-b3a gene in the soybean growth period is shown as a sequence list Seq ID No:1, and the amino acid sequence of the coding protein of the el-b3a gene in the soybean growth period is shown as a sequence list Seq ID No:2. By means of relevant heredity and molecular functional verification of varieties, the el-b3a gene has a flowering promoting function as compared with El genes.

The embodiment of the invention relates to application of a mycotoxin biodegradation agent to promotion of healthy pig production, in particular to application of the mycotoxin biodegradation agent tothe preparation of feed for positively regulating a microbial flora in contents of pig jejunum, improving the detoxification ability of pigs and promoting healthy growth. The mycotoxin biodegradationagent can up-regulate the expression of 153 proteins in the liver of piglets and down-regulate the expression of 55 proteins. The differential proteins are mainly involved in the composition of cellcomponents, molecular functions and biological processes. Analysis of KEGG pathways of the differential proteins shows that the mycotoxin biodegradation agent can up-regulate the expression of 13 proteins without down-regulated proteins, the KEGG pathways in which the up-regulated proteins mainly participate include endoplasmic reticulum protein processing, glycolysis / gluconeogenesis, tryptophan metabolism, valine, leucine and isoleucine metabolism, microbial metabolism in different environments, starch and sucrose metabolism and the like.

The present invention relates to a device for detecting a target molecule within a sample comprising a sample container for the measurement of the target molecule within a sample, a first particle, wherein said first particle is functionalized with a first binding molecule capable of specifically binding to said target molecule, and a surface structure comprising a second binding molecule, wherein said surface structure covers a flat sensor or is present on a second particle, wherein said first particle is capable of binding said second binding molecule of the surface structure directly or indirectly; wherein said first and / or second binding molecule is indirectly attached to the particle surface of said first and / or second particle and / or the flat sensor surface via a long and rigid linker molecule; wherein the length and the consistency of said linker molecule is selected such as to result in an average extension length of said linker of more than 60 nm; and wherein the number of particle clusters or of bound particles is directly or inversely related to the amount of target molecules present in the sample. In a further aspect the present invention relates to a method of detecting the presence or amount of a target molecule within a sample. The present invention also describes the use of a particle according to the invention for detecting a target molecule within a sample.