Abstract:
The present invention relates to a nucleic acid linker for producing a complex of mRNA, and a protein or a peptide which is encoded by the mRNA, the linker comprising: a spacer portion at the 5′-terminal; a polynucleotide portion hybridizable with at least a part of a sequence of the mRNA; and an arm portion which has a connection portion for the protein or the peptide at the 3′-terminal, in which the spacer portion, the polynucleotide portion, and the arm portion form a single strand, and in which the polynucleotide portion contains a photoreactive base derivative.
Abstract:
A particle detection method in which particles in a sample are detected includes: a mounting step of mounting, on a stage portion, a fluid device including a channel through which the particles can move; an irradiation step of irradiating the channel with illumination light; and a detection step of detecting scattered light generated from the particles by irradiation with the illumination light. In the irradiation step, the illumination light is converged such as to enter the channel by passing through, among side surfaces of the channel, only the first side surface that faces an illumination light incident direction.
Abstract:
A microparticle detection system includes a stage unit including a mounting surface on which a fluid device having a flow path through which a sample containing microparticles is movable is capable of being mounted, an emission unit configured to emit illumination light to the flow path, an imaging unit configured to image scattered light generated from microparticles in the sample when illumination light is emitted, an identification unit configured to identify the microparticles included in the image for each of the microparticles on the basis of the image captured by the imaging unit, a particle size determination unit configured to determine a particle size of the microparticle for each of the microparticles identified by the identification unit, a zeta potential determination unit configured to determine a zeta potential of the microparticle for each of the microparticles identified by the identification unit, and a correlation unit configured to associate the particle size for each of the microparticles determined by the particle size determination unit with the zeta potential for each of the microparticles determined by the zeta potential determination unit for each of the microparticles.
Abstract:
The present invention provides a fluidic device, an exosome analysis method, a biomolecule analysis method, and a biomolecule detection method, which can analyze even the content of an exosome in a series of flows by introducing a sample into the device. A fluidic device of the present invention is a fluidic device which detects a biomolecule contained in an exosome in a sample, and includes: an exosome purification unit which has a layer modified with a compound having a hydrophobic chain and a hydrophilic chain; a biomolecule purification unit; a biomolecule detection unit; a first flow path which connects the exosome purification unit to the biomolecule purification unit; and a second flow path which connects the biomolecule purification unit to the biomolecule detection unit.
Abstract:
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.
Abstract:
The present invention relates to a nucleic acid linker for producing a complex of mRNA, and a protein or a peptide which is encoded by the mRNA, the linker comprising: a spacer portion at the 5′-terminal; a polynucleotide portion hybridizable with at least a part of a sequence of the mRNA; and an arm portion which has a connection portion for the protein or the peptide at the 3′-terminal, in which the spacer portion, the polynucleotide portion, and the arm portion form a single strand, and in which the polynucleotide portion contains a photoreactive base derivative.
Abstract:
A protein-immobilizing solid phase is a protein-immobilizing solid phase comprising an mRNA-nucleic acid linker-protein complex, obtained by linking the mRNA and the protein encoded by that mRNA through the nucleic acid linker, immobilized on the solid phase, wherein the nucleic acid linker has a photocleavage site and a solid phase binding site.
Abstract:
A device for measuring activity of cultured cells includes a position detecting unit specifying a position of a cell to be measured, a microchamber controlling unit disposing in the culture container a microchamber which surrounds the cell and forms a measurement space, the measurement space being minute with respect to a volume of the culture container, and a measuring unit measuring environmental factors contained in the measurement space.
Abstract:
A method of analyzing an exosome is provided for detecting abnormality in a cell, including: (a) a step of preparing an exosome from a sample; (b) a step of bringing the exosome prepared in the step (a) into contact with a first antibody to a protein which exists on the surface of the exosome as an antigen and forming a first antibody-exosome complex; and (c) a step of measuring a zeta potential of the first antibody-exosome complex.
Abstract:
A method for detecting a target nucleic acid, comprising: (a) contacting a nucleic acid sample comprising a target nucleic acid, comprising a first portion and a second portion, with: (i) a detection probe, wherein the detection probe is labeled with a labeling substance and comprises a nucleic acid sequence that forms a stem-loop structure and having a 5′ protruding end or a 3′ protruding end that is capable of hybridizing to the second portion, and (ii) a capture probe comprising a nucleic acid sequence capable of hybridizing to the first portion, wherein the capture probe is immobilized to a substrate, under conditions to form a target nucleic acid-detection probe-capture probe complex by hybridizing the second portion to the detection probe and hybridizing the first portion to the capture probe; (b) ligating a first end of the detection probe with an end of the target nucleic acid and ligating a second end of the detection probe with an end of the capture probe; and (c) detecting the labeling substance of the nucleic acid-detection probe-capture probe complex formed on the substrate.