Patent application number | Description | Published |
20080286793 | METHOD OF ANALYSIS OF PRIMARY STRUCTURAL CHANGE OF NUCLEIC ACID - The object of the present invention is to offer a method for analyzing primary structure change of nucleic acid which has quantifiability, which has a high degree of sensitivity and reproducibility, and which can be conducted rapidly and at low cost. The method of analysis of primary structural change of nucleic acid of the present invention includes a process for obtaining a reference nucleic acid having a standard sequence and a target sequence, each sequence being bound by a first ligand that differs depending on type of the sequence to which it binds, and being bound by a second ligand; a process for specifically binding first ligands to receptors supported on a carrier, thereby immobilizing standard sequences and target sequences on the carrier; a process for specifically binding labeled receptors to the second ligands in said nucleic acids which have been immobilized; a process for detecting labels to detect standard sequences and target sequences; a process for obtaining the ratio of standard sequences in the reference nucleic acid and subject nucleic acid, calculating a coefficient which corrects detection values of target sequences, and conducting correction; and a process for confirming an increase/decrease in the quantity of target sequences in the subject nucleic acid relative to target sequences in the reference nucleic acid. | 11-20-2008 |
20090305288 | METHODS FOR AMPLIFYING NUCLEIC ACIDS AND FOR ANALYZING NUCLEIC ACIDS THEREWITH - An object of the present invention is to control the increase in amplification errors generated during the nucleic acid amplification and thus to obtain an amplification product having a good reproducibility. The present invention is characterized in that a target nucleic acid to be amplified is amplified through a two-stage amplification process in which the amplification only of a single strand is first performed and a strand which is complementary to its amplified product is then amplified. The amplification uses a first primer which is employed for the first-stage amplification and a second primer which is employed for the second-stage amplification. These primers are each used separately, or alternatively designed to have a different stringency and used at the same time. | 12-10-2009 |
20100124743 | METHOD FOR DIAGNOSIS OF CANCER - Disclosed is a method for diagnosing cancer with high accuracy through quantification of cancer cell-derived DNA, which comprises the steps of: (1) extracting free DNA from a plasma collected from a test subject; (2) quantifying the extracted free DNA and calculating the free DNA content per unit volume of the plasma to obtain a first calculation value; (3) comparing the first calculation value with a second threshold value which is equal to or higher than a first threshold value; and (4) determining that the test subject is highly unlikely affected by cancer if the first calculation value is lower than the first threshold value, determining that the test subject is likely affected by cancer if the first calculation value is equal to or higher than the first threshold value and lower than the second threshold value, or determining that the plasma used for the quantification is contaminated by normal cell-derived DNA if the first calculation value is equal to or higher than the second threshold value. | 05-20-2010 |
20100248250 | METHOD FOR PREPARING STOOL SAMPLE, SOLUTION FOR PREPARING STOOL SAMPLE, AND KIT FOR COLLECTING STOOL - Provided in the present invention are a method for preparing a stool sample without any need for complicated operations which is capable of efficiently recovering a nucleic acid or the like originating from mammalian cells, such as the cells exfoliated from the large intestine, in the stool; a solution for preparing a stool sample and a kit for stool collection which are used in the above method; and a method for recovering and analyzing the nucleic acid in stool using the stool sample prepared by the above method. More specifically, provided are a method for preparing a stool sample which is a method for preparing a stool sample in order to efficiently recover a nucleic acid from the stool sample, the method characterized in that the collected stool is mixed with a solution for preparing a stool sample which has a water-soluble organic solvent as an active ingredient; a solution for preparing a stool sample which is used in the method; a kit for collecting stool; a method for recovering a nucleic acid characterized by recovering a nucleic acid originating from indigenous enteric bacterium and a nucleic acid originating from an organism other than indigenous enteric bacterium at the same time from the stool sample prepared by the preparation method; and a method for analyzing a nucleic acid that analyzes the nucleic acid recovered by the method for recovering a nucleic acid. | 09-30-2010 |
20100255481 | METHOD FOR DETECTION OF ADENOMA OR CANCER BY GENETIC ANALYSIS - Disclosed is a method which enables an early stage detection of an adenoma or cancer by gene expression analysis of a biomarker in a readily collectable sample. Specifically disclosed is a method for detecting an adenoma or cancer, which comprises the steps of: measuring the quantity of a sequence constituting at least one housekeeping gene or an expression product thereof contained in a body fluid sample or an excrement sample collected from an examinee; and calculating the concentration of the sequence in the sample. | 10-07-2010 |
20110183332 | METHOD FOR RECOVERING NUCLEIC ACID FROM STOOL SAMPLE, NUCLEIC ACID ANALYSIS METHOD AND STOOL SAMPLE PROCESSING APPARATUS - The present invention relates to the a nucleic acid analysis method that uses nucleic acid recovered according to the nucleic acid recovery method, and a stool sample processing apparatus used in that method, wherein the method has steps of: (A) eluting nucleic acid amplification reaction inhibitory substances by preparing a stool sample by adding a collected stool to a solution for removing nucleic acid amplification reaction inhibitory substances that has a water-soluble organic solvent as an active ingredient thereof, and storing the stool sample for a predetermined time, (B) recovering a stool-derived solid fraction by removing the solution for removing nucleic acid amplification reaction inhibitory substances from the stool sample after step (A), and (C) recovering nucleic acid from the stool-derived solid fraction recovered in step (B). | 07-28-2011 |
20110189673 | STOOL SAMPLE PREPARATION METHOD, SOLUTION FOR PREPARING STOOL SAMPLE AND STOOL COLLECTION KIT - The present invention relates to the providing of a method for preparing a stool sample that enables nucleic acids in a stool to be stably preserved without requiring a complex procedure, a stool sample preparation solution and stool collection kit used in that method, and a method for recovering and analyzing nucleic acids in a stool using a stool sample prepared according to the preparation method of the present invention, and a stool sample having superior preservation of nucleic acids contained in the stool sample is prepared by mixing a collected stool with the stool sample preparation solution having for an active ingredient thereof a water-soluble organic solvent containing an organic acid. | 08-04-2011 |
20110236895 | METHOD FOR PREPARING SAMPLE, SOLUTION FOR PREPARING SAMPLE AND STOOL COLLECTION KIT METHOD FOR ANALYZING A NUCLEIC ACID - The present invention relates to the providing of a method for preparing a sample from a nucleic acid-containing sample such as biological samples, where inhibitory substance's action against a enzyme reaction using a nucleic acid as substrate are decreased, a solution for preparing a sample used for the method, a stool collection kit used in that method, and a method for recovering and analyzing a nucleic acid in a nucleic acid-containing sample using a sample prepared using the preparation method of the present invention. A method for preparing a sample according to the present invention is a method for preparing a sample being used for analyzing a nucleic acid, and is characterized in that a nucleic acid-containing sample is mixed with a solution having one or more members selected from the group consisting of a polycation and a chelating agent as an active ingredient. | 09-29-2011 |
20110244461 | METHOD FOR PREPARING STOOL SAMPLE, SOLUTION FOR PREPARING STOOL SAMPLE AND STOOL COLLECTION KIT - The present invention relates to the providing of a method for preparing a stool sample that enables a nucleic acid in a stool to be stably preserved without requiring a complex procedure, a solution for preparing a stool sample, a stool collection kit used in that method, and a method for recovering and analyzing a nucleic acid in a stool using a stool sample prepared using the preparation method of the present invention. A method for preparing a stool sample according to the present invention is a method for preparing a stool sample being used for analyzing a nucleic acid contained in the stool, and is characterized in that a collected stool is mixed with a solution having a protease inhibitor as an active ingredient. | 10-06-2011 |
20120064525 | METHOD FOR COLLECTION OF NUCLEIC ACID DERIVED FROM MAMMALIAN CELL, METHOD FOR ANALYSIS OF NUCLEIC ACID, AND KIT FOR COLLECTION OF FECES - A method of recovering a nucleic acid derived from a mammalian cell taken from feces is provided. The nucleic acid is recovered easily even from feces collected in routine health checkups or the like. The nucleic acid of mammalian cell can be recovered more selectively than that from an enterobacterial cell. The method of recovering of the present invention includes the steps of, (A) preparing a fecal sample by placing the feces in a treatment solution with a high salt concentration, immersing the feces in the treatment solution for a predetermined period; (B) recovering a solid component from the fecal sample after the step (A); and (C) recovering a nucleic acid from the solid component recovered in the step (B). | 03-15-2012 |
20120064535 | METHOD OF PREPARING SAMPLES CONTAINING NUCLEIC ACIDS - The present invention provides a method of preparing a sample enabling efficient recovery of nucleic acids from a biological sample such as stool without requiring a bothersome procedure. The method of preparing a nucleic acid-containing sample of the present invention comprises (A) a step for mixing a biological sample with a nucleic acid stabilizer, (B) a step for recovering a solid component from the mixture obtained in step (A) in the form of a nucleic acid-containing sample, and (C) a step for washing the solid component recovered in step (B) using an acidic buffer solution having a pH of 2 or higher. | 03-15-2012 |
20120100542 | METHOD FOR DETECTION OF TARGET NUCLEIC ACID, AND METHOD FOR TESTING FOR COLON CANCER - The present invention provides: a method for easily and simply obtaining highly reliable results of the detection of a target nucleic acid from nucleic acids that are directly recovered from feces; and a method for testing for diseases, particularly colon cancer, by using this method. Specifically, the present invention is a method for detecting an animal-derived target nucleic acid, comprising: (a) a step of collecting a fixed quantity of feces; (b) a step of recovering nucleic acids from the feces that has been collected in the step (a), and preparing a fixed volume of a nucleic acid solution; and (c) a step of dispensing a fixed volume of an aliquot from the nucleic acid solution that has been prepared in the step (b), and detecting the target nucleic acid in the dispensed solution. | 04-26-2012 |