WO2003083474A1 - Piece d'essai servant a analyser une substance d'origine biologique, procede de fabrication et d'examen de cette piece d'essai comprenant la substance d'origine biologique - Google Patents
Piece d'essai servant a analyser une substance d'origine biologique, procede de fabrication et d'examen de cette piece d'essai comprenant la substance d'origine biologique Download PDFInfo
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- WO2003083474A1 WO2003083474A1 PCT/JP2003/003853 JP0303853W WO03083474A1 WO 2003083474 A1 WO2003083474 A1 WO 2003083474A1 JP 0303853 W JP0303853 W JP 0303853W WO 03083474 A1 WO03083474 A1 WO 03083474A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0046—Sequential or parallel reactions, e.g. for the synthesis of polypeptides or polynucleotides; Apparatus and devices for combinatorial chemistry or for making molecular arrays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y5/00—Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00497—Features relating to the solid phase supports
- B01J2219/00527—Sheets
- B01J2219/00529—DNA chips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/0054—Means for coding or tagging the apparatus or the reagents
- B01J2219/00545—Colours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/0054—Means for coding or tagging the apparatus or the reagents
- B01J2219/00572—Chemical means
- B01J2219/00576—Chemical means fluorophore
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00596—Solid-phase processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00639—Making arrays on substantially continuous surfaces the compounds being trapped in or bound to a porous medium
- B01J2219/00641—Making arrays on substantially continuous surfaces the compounds being trapped in or bound to a porous medium the porous medium being continuous, e.g. porous oxide substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00659—Two-dimensional arrays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/0068—Means for controlling the apparatus of the process
- B01J2219/00693—Means for quality control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/0068—Means for controlling the apparatus of the process
- B01J2219/00702—Processes involving means for analysing and characterising the products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00718—Type of compounds synthesised
- B01J2219/0072—Organic compounds
- B01J2219/00722—Nucleotides
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- C—CHEMISTRY; METALLURGY
- C40—COMBINATORIAL TECHNOLOGY
- C40B—COMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES
- C40B40/00—Libraries per se, e.g. arrays, mixtures
- C40B40/04—Libraries containing only organic compounds
- C40B40/06—Libraries containing nucleotides or polynucleotides, or derivatives thereof
Definitions
- the present invention relates to a test piece for analyzing a biological substance which can be used for analysis of a biological substance such as a gene, a method for producing the same, and a test for a biological substance. It relates to the inspection method of the piece.
- BACKGROUND ART Genetic information analysis methods can be classified into two main categories. One is to analyze “what the mRNAs and proteins expressed from the genes themselves and the genes are”. The other is to analyze mosquitoes whose mRNA or protein is expressed under any conditions. Methods belonging to the former include the Western 'plot method, the Northern' blot method, and the Southern plot method.
- a technology called a DNA chip or DNA microarray which immobilizes any oligonucleotide at a high density on the surface of a carrier approximately 1 cm square, has been developed. It is becoming possible to analyze a group of genes at once in a comprehensive manner.
- the DNA chip divides the silicon chip into many sections by photolithography technology, and directly synthesizes single-stranded DNA with a specific base sequence on each section It was done.
- a DNA microarray is obtained by spotting DNA, which has been conventionally spotted on the membrane in an amount of about 30 Owl or more, on a slide glass in an amount of about 20 Op1.
- Such DNA chip-to-DNA microarrays can be used to change the type and arrangement of nucleic acids on the chip-to-microarray as appropriate, and can be used in connection with signal readers and computer systems for gene mutation analysis, polymorphism analysis, and base sequence analysis. It can be used for various applications such as expression analysis.
- a microarray is made by plotting oligo DNA or cDNA with a so-called spotter device.
- the method of making the microarray is to place a pin directly on a slide glass to place the oligo DNA or cDNA.
- a pin for spotting a sample such as oligo DNA or cDNA is brought into direct contact with a carrier such as a slide glass and the sample is placed on the carrier.
- a sample is spotted on a carrier using an ink jet technique used in the printing field and the like.
- the amount varies among the spots spotted on the carrier, the shape of each spot is not uniform, and sometimes the sample is not arranged at a specific spot at all. May occur.
- the position of the spot may be shifted. Such problems give rise to quality problems in DNA microarray products produced by this method.
- Japanese Patent Application Laid-Open No. 2000-235036 discloses a biomarker labeled with a labeling substance, in which a plurality of different specific binding substances, which are different from each other, are respectively arranged at predetermined positions on a carrier.
- a test piece used for analysis of a derived substance a test piece in which the specific binding substance is labeled with a labeling substance, and a method of quantifying a biological substance using the same have been proposed.
- the present invention focuses on the poor quality of the carrier, which is one of the factors that are not immobilized, and immobilizes the labeled test substance on the carrier separately from the specific binding substance.
- An inspection method that includes a process for easily confirming whether a carrier is suitable for producing test specimens for biological substances by removing test substances that did not exist, and a biological substance analysis method that includes this inspection method It is another object of the present invention to provide a method for producing a test piece, and a test piece for analyzing a biological substance obtained by the method.
- a solution containing a specific binding substance for a biological substance is supplied onto a carrier, and the specific binding substance is provided at the predetermined position.
- a labeled test strip for analyzing a biological substance which comprises a step of immobilizing It is characterized by being contained independently, dissolved or uniformly dispersed.
- the method for producing a test strip for analyzing a biological substance preferably further includes a step of detecting the substance to be detected, after the step of supplying the solution, or the step of fixing the specific binding substance, In this case, after the step of detecting the target substance, a step of removing the target substance from the carrier may be further included.
- the step of detecting the target substance may include at least one of a position, a shape, a number, and a concentration of the target substance on the carrier. Preferably, it is a step of detecting one.
- the substance to be detected may further include the biological substance, the specific binding substance, and a composite of the biological substance and the specific binding substance. It is preferable to have spectroscopic properties different from those specific to the body.
- the spectroscopic property is preferably absorbance.
- the substance to be detected can be selected from the group consisting of ink, dye, and pigment.
- a step of supplying a labeled test substance on a carrier and immobilizing the test substance at a location different from the specific binding substance, and not immobilizing the test substance And a carrier inspection step including a step of removing the test substance. Furthermore, in the method for producing a test strip for analyzing a biological substance according to the present invention, a signal derived from a label of the immobilized test substance is detected after the step of removing the test substance that is not immobilized. It is preferable to have a step.
- the test piece for analyzing a biological substance of the present invention is manufactured by the method for producing a test piece for analyzing a biological substance of the present invention, and more specifically, the specific binding substance to the biological substance.
- the method for testing a test piece for a biological substance of the present invention is a method for testing a test piece for a biological substance, in which a specific binding substance to the biological substance is immobilized at a specific location on a carrier.
- the test substance is supplied on the carrier, and the location different from the specific binding substance And a step of removing a test substance that has not been immobilized.
- a step of detecting a signal derived from the label of the immobilized test substance after the step of removing the non-immobilized test substance is included. It is preferred to have.
- the method for testing a test piece for a biological substance of the present invention is a method for testing a test piece for a biological substance, in which a specific binding substance to the biological substance is immobilized at a specific location on a carrier.
- the specific location of the immobilization step And a step of removing a specific binding substance, a test substance, and a substance to be detected that have not been immobilized in the two immobilization steps. I do.
- the target substance remaining on the carrier after the step of removing the non-immobilized specific binding substance, test substance, and target substance is removed. And a step of detecting a signal derived from the label of the immobilized test substance.
- Bio substances include not only cells of animals, plants, microorganisms, etc., but also substances derived from viruses and the like that cannot grow on their own if they do not contribute to them, and specifically include proteins, nucleic acids, etc. It is. Biological substances can be directly extracted from these cells, etc., not only in their natural forms, but also those produced using genetic engineering techniques, as well as those chemically modified or chemically modified. And those synthesized in the above. More specifically, biological substances include substances such as hormones, tumor markers, enzymes, antibodies, antigens, abzymes, other proteins, nucleic acids, cDNA, DNA, and mRNA. In the present invention, the biological substance is labeled with a fluorescent substance or the like, and the labeling substance and the labeling method are those known in the art. It is not particularly limited as long as it is determined in consideration of the biological system-derived substance detection system.
- specific binding substance means a substance that specifically binds to the above-mentioned biological substance, specifically, a ligand such as a hormone and its receptor, an enzyme and its substrate, a tumor marker and the like. Any of antigens, antibodies thereto, and nucleic acids having a specific sequence and nucleic acids having a sequence complementary thereto are included.
- test piece includes a plurality of spots designed to have a fixed arrangement on a carrier, which are processed so that a substance can be fixed to the surface of each spot, and include: As appropriate, the substance is immobilized on the spot, and the substance and another substance binding thereto are bound at each spot, and a complex formed between the substance and the other substance is detected. Means what you use.
- the test piece includes a DNA chip and a DNA microarray.
- Detected substance refers to a substance that is different from the biological substance, and that is different from the specific spectral properties of the biological substance, the specific binding substance, and their complex. Having the following.
- Test substance refers to a substance used to confirm the quality of the carrier, as long as it has the same binding mode as the binding mode between the specific binding substance and the carrier. It is possible. Specifically, a substance similar to the above-mentioned specific binding substance may be used, but it is not necessary to specifically bind to a biological substance.
- the method of the present invention for producing a test piece for a biological substance comprises a step of supplying a solution containing a specific binding substance to the biological substance on a carrier, and fixing the specific binding substance at the predetermined position.
- the solution is characterized in that the target substance different from or identical to the label is dissolved or uniformly dispersed independently of the specific binding substance.
- the solution (or dispersion or suspension) containing the specific binding substance used in the present invention also contains the substance to be detected which is different from or the same as the label to be detected. So The substance to be detected is dissolved in the solution or contained uniformly dispersed or suspended independently of the specific binding substance.
- the term “independently dissolved, dispersed, or suspended” means that the specific binding substance and the substance to be detected are not separately chemically bonded in advance, but each is a separate solute or a dispersed phase in the solution (dispersion or dispersion). (Suspension). Further, it is preferable that the target substance has no effect of inhibiting the binding between the specific binding substance and the biological substance.
- the carrier used in the method of the present invention is not particularly limited as long as it is suitable for immobilizing a specific binding substance.
- each section is planar such as a slide glass, a silicon wafer, and a membrane filter.
- a carrier having a porous structure may be used.
- the carrier having a porous structure include an aluminum oxide film in which a plurality of fine liquid storage portions capable of three-dimensionally storing a liquid are provided.
- the liquid container is a minimum unit for fixing a specific binding substance.
- Such a carrier having a porous structure can immobilize a large amount of a specific binding substance in one liquid storage portion and can quantitatively immobilize the specific binding substance, so that the expression amount can be reduced. It is suitable for quantitative experiments such as analysis. It is also possible to apply a porous carrier produced by etching a silicon wafer.
- the method for preparing the specific binding substance since the label for detecting the amount of the specific binding substance immobilized on the carrier is not directly bound to the specific binding substance, the method for preparing the specific binding substance is used.
- the label for the specific binding substance may be of one type for immobilization on a carrier, so that the degree of freedom in selecting the label is high.
- the method of the present invention can further include a step of detecting the substance to be detected after supplying the above solution onto a carrier. That is, in the method of the present invention, the detection of the substance to be detected can be carried out at the production stage as a product quality inspection step. Ma In addition, it is possible that the user can check the quality of the test piece before using the test piece without removing the substance to be detected during the manufacturing process.
- the method of the present invention includes a step of detecting a substance to be detected
- a step of removing the substance to be detected from the carrier may be further included after the step.
- the removal method is not particularly limited as long as the specific binding substance immobilized on the carrier is not removed from the carrier and only the substance to be detected can be selectively removed.
- Specific examples include a solvent having the same composition as that used in the solution containing the biological substance and the substance to be detected, and a solution in which the salt concentration, pH, etc. are changed from those, but these are limited. Not done.
- the target substance may affect the detection of the complex of the specific binding substance and the biological substance, the target substance is preferably removed before using the test piece.
- the substance to be detected when a substance that does not affect the detection of a biological substance is used as the substance to be detected, the substance to be detected is immobilized after the specific binding substance is immobilized on the carrier.
- the step of removing the metal can be skipped. This is preferred because it simplifies the process and eliminates the possibility that the specific binding substance will dissociate from the carrier during the removal process.
- the spot shape includes confirmation of the presence or absence of a satellite spot.
- a satellite spot means that when a solution is spotted on a carrier by the inkjet method, one droplet does not become one on the carrier, and one larger droplet and a smaller, at least one liquid near it Droplets (due to droplets) may occur, but in this case means droplets due to droplets. If a satellite spot is thus generated, it is preferable that the spot is not used when the test piece is used.
- information on the concentration of the target substance on the carrier can be obtained by preparing a calibration curve for the target substance to be used in advance, if the specific binding actually spotted on the carrier of the test piece is used.
- This is useful in that it can be used to test and correct the quantity of a substance. Inspection of the spot of the substance to be detected on the test piece is performed, for example, by capturing an image of the test piece with a CCD camera or the like, performing image processing, and confirming whether the result matches a preset one. be able to.
- This operation can be performed in a large amount by using a computer as appropriate, and the data obtained by the inspection and the combination of the test piece used for the inspection are managed on a data basis.
- the substance to be detected used in the method of the present invention has a spectroscopic property different from the spectroscopic property specific to the biological substance, the specific binding substance, and a complex thereof, and is preferable.
- the spectroscopic property is the absorbance.
- a method of detecting the target substance an appropriate method is used depending on the spectroscopic properties of the target substance to be used.For example, a wavelength specific to the target substance, for example, a visible light, an ultraviolet ray, an infrared ray range is used. A method of measuring the spectrum of It is preferable to measure the spectrum in the visible light region because the cost of the detection system can be reduced.
- a substance selected from the group consisting of ink, pigment, and pigment can be used as the substance to be detected. More specifically, fluorescent dyes (Cy3, Cy5, rhodamine, Yumura, FITC, etc.), black iron oxide, black iron oxide, red iron oxide, orange G, azo dyes, phthalocyanine dyes, fluorescent inks Fluorescent pigments and quantum dots, such as fine particles of gold, silver, silicon, and various other semiconductors having a particle size on the order of nm.
- fluorescent dyes Cy3, Cy5, rhodamine, Yumura, FITC, etc.
- black iron oxide, black iron oxide, red iron oxide, orange G azo dyes, phthalocyanine dyes
- fluorescent inks Fluorescent pigments and quantum dots, such as fine particles of gold, silver, silicon, and various other semiconductors having a particle size on the order of nm.
- the amount of the substance to be detected is not particularly limited as long as it can be dissolved or uniformly dispersed or suspended in the solution containing the specific binding substance and can be detected in the subsequent steps.
- the immobilization of the specific binding substance on the carrier is performed by any method known in the technical field related to the present application, depending on the type of the specific binding substance and the properties of the immobilized surface of the carrier. be able to. For example, Biochem. Biophis. Res. Commun.
- the present invention is characterized in that the method comprises a step of supplying a labeled test substance onto a carrier and immobilizing the test substance at a location different from the specific binding substance, and a step of removing the test substance that has not been immobilized.
- the substance is labeled by directly or indirectly binding fluorescent, radioisotope, chemiluminescence, quantum dot, etc. to the test substance by a known method, and is appropriately detected as a signal by appropriate means. ⁇ Indicates what is being measured.
- a substance similar to the specific binding substance can be used. For example, when oligo DNA is used as the specific binding substance, oligo DNA can be used as the test substance.
- any method known in the technical field related to the present invention may be used according to the type of the test substance and the properties of the immobilized surface on the carrier. And a method similar to the method for immobilizing a specific binding substance on a carrier.
- the immobilized specific binding substance and the immobilized test substance are not removed from the carrier, and the immobilization is performed. Any method that can remove untested test substances can be used. Specifically, for example, using a solvent having the same composition as that used in the solution containing the specific binding substance and the test substance, changing the salt concentration and pH, etc., and using sterilized water, etc. The carrier may be washed and dried. At this time, the specific binding substance that has not been immobilized may be removed together. After this step, a signal derived from the label of the immobilized test substance is detected.
- the present invention further provides a mixture of the analyte and the specific binding substance on a carrier.
- Immobilizing a specific binding substance at a specific location supplying a labeled test substance onto a carrier, and immobilizing the specific binding substance at another specific location different from the specific location in the step of immobilizing the specific binding substance. And a step of removing the specific binding substance, the test substance, and the substance to be detected that have not been immobilized in these steps. Also provide.
- the removal method in the step of removing the non-immobilized specific binding substance, the test substance, and the detection target substance includes the immobilized specific binding substance and the immobilized test substance.
- the carrier may be washed and dried.
- the carrier After this step, signals from the test substance remaining on the carrier and the immobilized test substance are detected. If the signal of the substance to be detected is not detected and the signal derived from the label of the test substance is detected, the carrier is suitable for binding to a specific binding substance, that is, suitable for producing a test piece. You can judge.
- the substance to be detected serves as an index as to whether or not the specific binding substance that has not been immobilized and the test substance have been completely removed. That is, the specific binding that was not immobilized in the step of removing the specific binding substance, the test substance, and the analyte Incomplete removal of substances and test substances leads to erroneous test results because unfixed test substances remain on the carrier even if the carrier is actually defective. would.
- This step can also be performed by a user to check the quality of the test piece before using the test piece.
- the present invention also provides a test specimen of a biological substance produced by the above production method.
- the test piece manufactured by the method of the present invention was used to determine whether the specific binding substance was spotted at a predetermined position on the carrier as set, as compared with the test piece manufactured by the conventional method. Or in the configuration that the user is able to check immediately at the time of use.
- Such differences have the advantage over the prior art test strips in that they can be used in tests requiring quantification, which were impossible or insufficient with conventional test strips.
- the biological material test strip of the present invention includes a DNA chip and a DNA microarray, but by appropriately changing the specific binding substance, it can be used to test nucleic acids other than DNA and other biological substances, such as proteins. It is possible to apply.
- a DNA microarray having a surface pretreated with a 1% by weight (wt%) poly-L-lysine solution and using a 76 mm ⁇ 26 mm ⁇ 1 mm slide glass as a carrier was used.
- a plurality of amino-labeled oligo DNAs having different base sequences and different from each other were used as specific binding substances.
- the fluorescent substance FITC fluorescein cyanate
- the prepared solution is prepared, and a spotter solution is used to spot the solution of the specific binding substance and the substance to be detected in a predetermined position on the carrier of the DNA microarray using a spotter.
- a DNA microarray immobilized at a predetermined position on the carrier was prepared.
- the size, shape, amount of fluorescence, and arrangement of each spot on the DNA microarray were measured using a fluorescence microscope (Olympus BX-51) equipped with a CCD camera, and these were measured within predetermined reference values. The presence or absence was confirmed by image analysis.
- the size, shape, amount of fluorescence, and arrangement of each spot on the DNA microarray could be very easily confirmed by an image analysis system using a fluorescence microscope.
- Example 1 the size, shape, fluorescence amount, and rooster position of each spot on the DNA microarray were measured, and after confirming that these were within predetermined standards, the prepared microarray was prepared. Washing was carried out three times with 0.2 ml of 0.2 ⁇ SSC solution to remove FITC as a substance to be detected. Next, the nucleic acid of the biological substance was labeled with FITC and allowed to bind to the specific binding substance on the microarray. It was possible to detect the biological substance with a better signal / noise ratio than when the biological substance was bound without washing the test substance on the microarray.
- the immobilization of the specific binding substance to the DNA microarray was carried out in the same manner as in Example 1 except that carbon colloid particles having a particle size of 0.5 / m or less were dispersed as the substance to be detected. An inspection was performed.
- Example 4 Since a substance to be detected that has a characteristic absorption spectrum in the visible light region is used instead of a fluorescent dye, detection can be performed with a simpler detection system than in Example 1, and since it is black, Binarization was easy, and image processing became easier. As described above, since a non-fluorescent substance is used as a substance to be detected, it is more advantageous to detect a biological substance labeled with a fluorescent label. (Example 4)
- the slide glass was washed sequentially with a PBS buffer and sterile water to remove non-immobilized oligo DNA from the slide glass. After the slide glass was dried with a dryer, the position where the test oligo was likely to be immobilized was observed with a fluorescence microscope, and the fluorescence was confirmed. Therefore, it was judged that 100 kinds of known unlabeled oligo DNAs were immobilized at predetermined positions as designed.
- oligo DNAs containing 100 kinds of known 5'-end amino-modified and mixed with Cy3 dye were added to a slide glass surface-modified with an active aldehyde group.
- a known 5'-terminal amino-modified and 3'-terminal (single-fluorescein isothiocyanate) -labeled oligo DNA (test oligo) is immobilized in place using an inkjet spotlight. It has become. Before washing, the Cy 3 dye was detected and the position of the spot was confirmed.Then, the slide glass was washed with PBS buffer and sterile water in order to remove non-immobilized oligo DNA from the slide glass. I left.
- the slide glass was contacted with a labeled sample containing DNA that specifically binds to 100 types of oligo DNA, washed, and detected. A good signal with sufficient intensity was confirmed from the sample. From the above results, in the test piece in which immobilization of one type of test oligo was confirmed, the results of the subsequent hybridization It was confirmed that the DNA oligo was also reliably immobilized.
- INDUSTRIAL APPLICABILITY In the method for producing a test strip for analyzing a biological substance according to the present invention, the substance to be detected that is different from or the same as the label of the labeled biological substance is used separately from the specific binding substance. In addition, since it contains dissolved or uniformly dispersed, the immobilization of the specific binding substance on the test piece can be examined by a low-cost and simple method.
- a defective product caused by a defective carrier can be easily found and eliminated in the production process, so that not only the production yield is improved, but also This can prevent waste of user samples and incorrect analysis results due to defects in test specimens.
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- Chemical & Material Sciences (AREA)
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- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Molecular Biology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Biomedical Technology (AREA)
- Medicinal Chemistry (AREA)
- Hematology (AREA)
- Biotechnology (AREA)
- Urology & Nephrology (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Pathology (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Cell Biology (AREA)
- Biophysics (AREA)
- General Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Pharmacology & Pharmacy (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Materials Engineering (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003580856A JP4257217B2 (ja) | 2002-03-28 | 2003-03-27 | 生体由来物質解析用試験片の製造方法、及び生体由来物質用試験片の検査方法 |
AU2003221180A AU2003221180A1 (en) | 2002-03-28 | 2003-03-27 | Test piece for analyzing substance with biological origin, process for producing the same and method of examining test piece for substance with biological origin |
US10/508,815 US20050130164A1 (en) | 2002-03-28 | 2003-03-27 | Test piece for analyzing substance with biological origin, process for producing the same and method of examining test piece for substance with biological origin |
EP03712983A EP1489417A1 (en) | 2002-03-28 | 2003-03-27 | Test piece for analyzing substance with biological origin, process for producing the same and method of examining test piece for substance with biological origin |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-91570 | 2002-03-28 | ||
JP2002091570 | 2002-03-28 | ||
JP2003-1111 | 2003-01-07 | ||
JP2003001111 | 2003-01-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003083474A1 true WO2003083474A1 (fr) | 2003-10-09 |
Family
ID=28677557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/003853 WO2003083474A1 (fr) | 2002-03-28 | 2003-03-27 | Piece d'essai servant a analyser une substance d'origine biologique, procede de fabrication et d'examen de cette piece d'essai comprenant la substance d'origine biologique |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050130164A1 (ja) |
EP (1) | EP1489417A1 (ja) |
JP (1) | JP4257217B2 (ja) |
AU (1) | AU2003221180A1 (ja) |
WO (1) | WO2003083474A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006208386A (ja) * | 2005-01-26 | 2006-08-10 | Agilent Technol Inc | 複数の標識を有するアッセイテスト細片及びその読み取り法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8128871B2 (en) | 2005-04-22 | 2012-03-06 | Alverix, Inc. | Lateral flow assay systems and methods |
US9891217B2 (en) | 2005-04-22 | 2018-02-13 | Alverix, Inc. | Assay test strips with multiple labels and reading same |
US10620124B2 (en) * | 2014-10-20 | 2020-04-14 | Hitachi, Ltd. | Optical analysis device and biomolecular analysis device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000235036A (ja) * | 1998-12-15 | 2000-08-29 | Fuji Photo Film Co Ltd | 試験片と生体由来物質の定量方法及び装置 |
JP2001249130A (ja) * | 2000-03-06 | 2001-09-14 | Hitachi Software Eng Co Ltd | マイクロアレイ、マイクロアレイ作製方法及びマイクロアレイにおけるピン間スポット量誤差補正方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5677197A (en) * | 1994-11-14 | 1997-10-14 | Hewlett-Packard Company | Biochemical assay plate and method for making the same |
US6881570B1 (en) * | 1998-12-15 | 2005-04-19 | Fuji Photo Film Co., Ltd. | Test piece and quantitative method and apparatus for an organism-oriented substance |
US6824669B1 (en) * | 2000-02-17 | 2004-11-30 | Motorola, Inc. | Protein and peptide sensors using electrical detection methods |
KR100794698B1 (ko) * | 2001-06-28 | 2008-01-14 | (주)바이오니아 | 생화학 물질 미세 배열 칩의 품질 검사 방법 |
-
2003
- 2003-03-27 AU AU2003221180A patent/AU2003221180A1/en not_active Abandoned
- 2003-03-27 WO PCT/JP2003/003853 patent/WO2003083474A1/ja active Application Filing
- 2003-03-27 US US10/508,815 patent/US20050130164A1/en not_active Abandoned
- 2003-03-27 EP EP03712983A patent/EP1489417A1/en not_active Withdrawn
- 2003-03-27 JP JP2003580856A patent/JP4257217B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000235036A (ja) * | 1998-12-15 | 2000-08-29 | Fuji Photo Film Co Ltd | 試験片と生体由来物質の定量方法及び装置 |
JP2001249130A (ja) * | 2000-03-06 | 2001-09-14 | Hitachi Software Eng Co Ltd | マイクロアレイ、マイクロアレイ作製方法及びマイクロアレイにおけるピン間スポット量誤差補正方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006208386A (ja) * | 2005-01-26 | 2006-08-10 | Agilent Technol Inc | 複数の標識を有するアッセイテスト細片及びその読み取り法 |
Also Published As
Publication number | Publication date |
---|---|
US20050130164A1 (en) | 2005-06-16 |
JP4257217B2 (ja) | 2009-04-22 |
EP1489417A1 (en) | 2004-12-22 |
AU2003221180A1 (en) | 2003-10-13 |
JPWO2003083474A1 (ja) | 2005-08-04 |
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