摘要:
A method of automatically isolating and purifying nucleic acid from a nucleic acid-containing specimen is provided, the method comprising: injecting a liquid into a cartridge for isolation and purification of a nucleic acid including at least two openings from one opening of the at least two openings, in which the cartridge includes a container having the at least two openings and containing a nucleic acid-adsorbent solid phase; passing the liquid through the nucleic acid-adsorbent solid phase by a pressure difference generated by a pressure generation means for generating a pressure difference between the inside and outside of the container; and discharging the liquid from the other opening of the container to the outside of the container by a pressure difference generated by the pressure generation means, wherein a pressure generated in the inside of the container by the pressure generation means is measured, a pressure change velocity and a pressure change acceleration are calculated on the basis of the value of the measured pressure, and the timing of completion of discharge of the liquid from the container is determined by use of a temporal change pattern of at least one of the measured pressure, the pressure change velocity and the pressure change acceleration.
摘要:
It is an object of the present invention to provide a nucleic acid fragment-fixed electrode wherein a probe nucleic acid fragment is fixed on the electrode stably and in an amount-controlled manner. The present invention provides a nucleic acid fragment-fixed electrode wherein a nucleic acid fragment is fixed on the surface of a multi-component self-assembled monolayer of two or more different components which is formed on the electrode, by a covalent bond via a bifunctional linking molecule.
摘要:
A microdevice for performing a method for separating and purifying a nucleic acid, the microdevice comprising: at least one opening; and at least one channel for passing a sample solution, wherein the method comprises: (A) a step of bringing a nucleic acid-containing sample solution into contact with a nucleic acid-adsorbing support having a function of adsorbing a nucleic acid; (B) a step of washing the nucleic acid-adsorbing support with a washing solution in a state of a nucleic acid being adsorbed to the support; and (C) a step of desorbing the nucleic acid from the nucleic acid-adsorbing support by a recovering solution, thereby purifying the nucleic acid; an apparatus for utilizing the microdevice; and a reagent kit for use in the microdevice.
摘要:
A method of isolating and purifying a nucleic acid, comprises the steps of: (1a) passing a sample solution containing a nucleic acid through a nucleic acid-adsorptive porous membrane to adsorb the nucleic acid to the nucleic acid-adsorptive porous membrane under a specific condition; (2a) passing a wash solution through the nucleic acid-adsorptive porous membrane to wash the nucleic acid-adsorptive porous membrane while adsorbing the nucleic acid under a specific condition; and (3a) passing a elution solution through the nucleic acid-adsorptive porous membrane to desorb the nucleic acid from the nucleic acid-adsorptive porous membrane under a specific condition.
摘要:
The invention provides a rapid, convenient, and automatable method for extracting a highly pure nucleic acid in order to carry out nucleic acid analysis smoothly with high accuracy in an array method. An analyzing method includes analyzing a nucleic acid by an array method, the nucleic acid being separated and purified by a separation and purification method which includes the steps of (a) to (f) identified in the specification.
摘要:
An object of the present invention is to provide a method for quantifying a target nucleic acid by PCR. The present invention provides a method for quantifying a target nucleic acid by the polymerase chain reaction utilizing a template nucleic acid comprising a sequence of the target nucleic acid, a pair of primers for amplifying the target nucleic acid, and polymerase, wherein the polymerase chain reaction is conducted in the presence of a pair of competitive primers having a sequence complementary to the sequence of the amplification primer.
摘要:
An immunoassay element for quantitatively analyzing a macromolecular antigen by determining the change in enzymatic activity caused by a reaction between the macromolecular polymer antigen and an enzyme-labelled antibody. The immunoassay element comprises a substrate layer containing a non-diffusible substrate which forms a diffusible material in the presence of the enzyme, and a reagent layer containing a fragmenting enzyme for further fragmenting the diffusible material into a lower molecular weight product. Also provided is a process for quantitatively analyzing a macromolecular antigen in a sample by the use of the immunoassay element.
摘要:
A water-soluble fluorescent intercalator compound having the formula: F—La—X F is a fluorescent moiety, X is a divalent cyclic group, and La is a linking group, and at least one of X and La has a site imparting water solubility to the compound or a site that is convertible into a site imparting water solubility to the compound is favorably employable as a fluorescent intercalator in a method for fluorometrically detecting complementary DNA fragments.
摘要:
A compound of the following formula: Ea—La—X—Lb—Eb in which each of Ea and Eb independently is a group having oxidation-reduction activity and having a conjugated system in its group; X is a divalent cyclic group; and each of La and Lb independently is a group which does not form a conjugated system in combination with the conjugated system of each of Ea and Eb and at least one of which has a site imparting water solubility to the compound or a site that is convertible into a site imparting water solubility to the compound, is favorably employable as an electroconductive threading intercalator in an electrochemical method for detecting complementary DNA fragments.
摘要:
One sigmoid calibration curve is split into three parts of low concentration region represented by a high degree function, intermediate concentration region represented by an exponential function and high concentration region represented by a high degree function according to the present invention. The boundary condition of the adjacent two functions is set so that the two functions have an equal slope at the boundary point; thereby, regression functions of the calibration curves in respective regions are found. The number of standard samples for finding a calibration curve can be reduced while the calibration curve found is of high accuracy.