WO2004111644A1 - 生体分子マイクロアレイ用基板、生体分子マイクロアレイ、相互作用促進用装置および方法、ならびに、相互作用の検出方法 - Google Patents
生体分子マイクロアレイ用基板、生体分子マイクロアレイ、相互作用促進用装置および方法、ならびに、相互作用の検出方法 Download PDFInfo
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N21/6452—Individual samples arranged in a regular 2D-array, e.g. multiwell plates
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/251—Colorimeters; Construction thereof
- G01N21/253—Colorimeters; Construction thereof for batch operation, i.e. multisample apparatus
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- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
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- G—PHYSICS
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- 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
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54373—Apparatus specially adapted for solid-phase testing involving physiochemical end-point determination, e.g. wave-guides, FETS, gratings
- G01N33/5438—Electrodes
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Definitions
- Biomolecule microarray substrate Biomolecule microarray substrate, biomolecule microarray, interaction promoting device and method, and interaction detecting method
- the present invention provides a biomolecule microphone array substrate for quantification and digital analysis of biomolecule fixation, a biomolecule microarray characterized in that biomolecules are immobilized and written on the substrate, and the microarray is used.
- the present invention relates to a biomolecule interaction promoting device, an interaction promoting method, and a biomolecule interaction detecting method.
- Hybridization of a probe nucleic acid and a target nucleic acid is used for the purpose of detecting a certain kind of nucleic acid (target nucleic acid), such as genetic diagnosis, identification of pathogenic bacteria, or detection of single nucleotide polymorphism.
- target nucleic acid such as genetic diagnosis, identification of pathogenic bacteria, or detection of single nucleotide polymorphism.
- a method is employed in which thiol is conjugated to single-stranded DNA, and the thiolated single-stranded DNA is immobilized on, for example, a metal substrate. Then, test on the immobilized DNA The target DNA, which is a body, is acted on to detect the presence or absence of hybridization. The presence or absence of hybridization can be detected, for example, by measuring the fluorescence of a spot of the immobilized DNA hybridized with the target DNA using a fluorescence method.
- a spotting type DNA microarray is prepared by placing a droplet containing probe DNA on a substrate and drying it.
- This has the advantage that it can be produced at low cost, but has the disadvantage that the uniformity of the DNA immobilized on the substrate is not guaranteed, that is, the size and shape of the DNA detection spot varies.
- These disadvantages are caused, for example, by the fact that the DNA-fixed substrate has been subjected to the DNA-fixed treatment (PLL treatment) on the entire surface of the substrate, and that the substrate surface is flat.
- an object of the present invention is to promote the interaction of a biomolecule with a substrate having a biomolecule-immobilized region of a fixed shape on a biomolecule microarray, in particular, high-speed hybridization of nucleic acids and promotion of interaction of a small amount of sample.
- Another object of the present invention is to provide a means for detecting and analyzing the interaction with high speed and high sensitivity.
- Still another object of the present invention is to provide a device and a method for promoting interaction that can promote the interaction of biomolecules and efficiently form an interaction between biomolecules that can interact with each other.
- the present invention provides a means for automatically performing a gridding operation, The aim is to enable the collection of fluorescence data from biomolecular microarrays and the automation of digital analysis. More specifically, the present invention provides a substrate for a biomolecule microarray, which can detect the interaction of biomolecules with high sensitivity, and preferably can also perform dalitting automatically, and a biomolecule immobilized on such a substrate. And a biomolecule microarray. It is a further object of the present invention to provide a method for detecting biomolecular interactions that enables automatic dalitting. DISCLOSURE OF THE INVENTION The means for achieving the object of the present invention are as follows.
- a biomolecule microarray substrate having one or more spots for immobilizing biomolecules on the substrate surface
- the biomolecule-immobilizing spot protrudes from the substrate surface, and has a spot plane at the top (hereinafter, referred to as a “projecting spot”); and
- At least the substrate surface around the protruding spot portion, the side surface of the protruding spot portion, and the spot plane are made of a conductive material.
- a biomolecule microarray substrate having one or more biomolecule fixing spots on the substrate surface The biomolecule immobilization spot protrudes from the substrate surface, and has a spot plane at the top (hereinafter, referred to as a “projection spot”);
- a substrate characterized in that adjacent projecting spot portions are adjacent to each other by a projecting spot portion side surface, and at least the projecting spot portion side surface and the spot plane are made of a conductive material.
- a biomolecule comprising the substrate and the biomolecule according to any one of (1) to (9), wherein the biomolecule is immobilized on at least a spot plane on the substrate.
- biomolecule (11) The biomolecule according to (10), wherein the biomolecule is at least one selected from the group consisting of DNA, RN.A, PNA, protein, polypeptide, glycan, lipid, natural small molecule, and synthetic small molecule. Biomolecular microarray. (12) a biomolecule microarray having one or more biomolecule-immobilized spots on a substrate,
- An electrode provided to face the surface of the microarray having the biomolecule-immobilized spot;
- An apparatus for promoting interaction of biomolecules comprising:
- the substrate constituting the biomolecule microarray has a biomolecule-immobilizing spot (hereinafter, referred to as a “projected spot”) that projects from the substrate surface and has a spot plane on the top.
- a biomolecule-immobilizing spot hereinafter, referred to as a “projected spot”
- At least the protruding spot has a conductive material surface
- a biomolecule is immobilized on the conductive material surface of the spot plane, and the biomolecule-immobilized spot is formed;
- the device for promoting interaction of biomolecules wherein the substrate has, on a surface other than the projecting spot portion on the substrate, a terminal capable of conducting electricity with the surface of the conductive material of the projecting spot portion.
- the surface other than the projecting spots on the substrate has a conductive material coating layer, and the terminal is included in the conductive material coating layer or can be electrically connected to the conductive material coating layer.
- a non-conductive spacer is provided between the microarray and the electrode (1 2) The apparatus according to any one of (1) to (15).
- a solution containing a target biomolecule is arranged between the microarray and the electrode, and
- a method for promoting interaction between biological molecules wherein an electric field is applied between the microarray and an electrode.
- the microarray is placed in an environment capable of interacting with a target biomolecule using the method according to any one of (19) to (22), or (23) The method according to (23), wherein the method is placed in an environment capable of interacting with a target biomolecule.
- the confocal detector reflects the projecting spot on the microarray from the difference in reflected light intensity due to the difference in height and / or shape between the projecting spot on the surface of the microarray and the other part.
- the method according to any one of (23) to (25), wherein the method is detecting as an image.
- a solution containing a target biomolecule is brought into contact with a biomolecule microarray having one or more spots on which biomolecules are immobilized on the substrate surface, and the immobilized biomolecule interacts with the target biomolecule.
- An electric field is applied to the solution containing the target biomolecule so that phenylalanine is contained, and the target biomolecule in the solution is electrophoresed toward the biomolecule-immobilized spot, thereby promoting the interaction.
- the microarray has, on a substrate, an electrode provided with a biomolecule-immobilized spot on a surface thereof, wherein an electrode facing the electrode on the substrate is used, and the solution containing the target biomolecule is the solution containing the target biomolecule.
- a solution containing a target biomolecule is brought into contact with a biomolecule microarray having one or more spots on which immobilized biomolecules are immobilized on the substrate surface, and the immobilized biomolecules interact with the target biomolecules.
- the solution containing the target biomolecule is phenylalanine, histidine, cal Nosin, and at least one buffer substance selected from the group consisting of arginine,
- the substrate has at least one pair of opposed electrodes provided on the same surface as the surface on which the biomolecule-immobilized spot is provided, such that the biomolecule-immobilized spot is located between the pair of electrodes.
- FIG. 1 is a schematic diagram of an optical system of a confocal detector used in the present invention.
- FIG. 2 is a schematic view of a projecting spot on the substrate of the present invention.
- FIG. 3 shows an example (partially enlarged view) of a roughened spot plane of the substrate of the present invention.
- FIG. 4 shows an enlarged view of a part of a substrate having a substantially V-shaped bottom surface.
- FIG. 5 shows an example of the substrate according to the second embodiment of the present invention.
- FIG. 6 shows a schematic diagram of the device for promoting interaction of biomolecules of the present invention.
- FIG. 7 shows a schematic diagram of an optical system of a confocal scanner capable of simultaneously detecting reflected light and fluorescence.
- FIG. 8 shows a digital camera image and a confocal microscope image of the substrate manufactured in Example 1.
- FIG. 9 shows a fluorescent image (a), a reflected image (b), and an image (c) obtained by superimposing the fluorescent image and the reflected image obtained in Example 2.
- FIG. 10 shows a reflection image and a fluorescence image obtained in Example 3.
- FIG. 11 shows a reflection image and a fluorescence image obtained in Example 4.
- FIG. 12 is a graph showing the correlation between the target concentration and the fluorescence intensity in Example 4.
- FIG. 13 is an example of a substrate that can be used in the method for interacting biomolecules of the present invention.
- FIG. 14 is a graph showing the hybridization signal intensity obtained in Example 5.
- FIG. 15 is a graph comparing the hybridization signal obtained when an electric field was applied and the hybridization signal obtained when no electric field was applied in Example 6.
- the biomolecule microarray substrate of the present invention is a biomolecule microarray substrate having at least one biomolecule immobilization spot on a substrate surface, wherein the biomolecule immobilization spot protrudes from the substrate surface, and Have a spot plane on top
- projecting spots Furthermore, in the biomolecule microarray substrate of the present invention, at least the surface of the substrate around the projecting spot, the side surface of the projecting spot, and the spot plane are made of a conductive material (hereinafter referred to as “first mode”). Or adjacent protruding spot portions are adjacent to each other by a side surface of the protruding spot portion, and at least the side surface of the protruding spot portion and the spot plane are made of a conductive material. It is characterized by quality (hereinafter referred to as “second aspect”).
- the biomolecule fixing spot is provided on the flat surface on the top of the protruding spot. Therefore, in the substrate according to the first aspect of the present invention, the spot plane (biomolecule fixing spot) on the top of the projecting spot is located one step higher than the substrate surface around the projecting spot. There is a height difference between the two.
- a confocal detector used for detecting the interaction of biomolecules is a device that reflects reflected light or fluorescence from a focal plane on a sample to a pinhole placed on an imaging plane of an optical system. To detect.
- FIG. 1 shows a schematic diagram of an optical system of the confocal detector 10 used in the present invention. The solid line a in FIG.
- Solid line b represents reflected light or fluorescence from the focal plane
- broken line represents reflected light or fluorescence from the non-focal plane.
- the confocal point detector 10 the reflected light reflected from the focal plane on the microarray 1 and the fluorescence emitted from the focal plane on the sample enter the beam splitter 13 through the objective lens 2, The optical path is corrected by the beam splitter 3 so as to be perpendicularly incident on the detection lens 4, and is incident on the image plane 5 via the detection lens 4.
- the confocal detector 10 is designed such that the focal point on the sample is also the focal point on the imaging plane. Therefore, light from the focal plane on the sample is focused on the imaging plane 5, passes through the pin hoe 6, and is detected by the detection unit 7.
- the confocal detector light from the focal plane can be selectively detected.
- a height difference between a substrate surface around the projecting spot portion and a spot plane (biomolecule fixing spot) on the top of the projecting spot portion is provided. Is greater than the depth of focus of the confocal detector used to detect the interaction between the biomolecule and the target biomolecule, the focal point of the confocal detector is adjusted to the height of the spot plane at the top of the projecting spot.
- the detector can detect the fluorescence and reflected light from the spot plane at the top of the projected spot with higher intensity than the fluorescence and reflected light from the substrate surface around the projected part. it can. Therefore, in the microarray of the present invention in which biomolecules are immobilized on the spot plane on the top of the projecting spot portion of the substrate, information on the spot, for example, the presence or absence of interaction with the target biomolecule is detected with high sensitivity. be able to.
- the adjacent protruding spot portions are adjacent to each other via the protruding spot portion side surface, and at least the protruding spot portion side surface is formed of a conductive material. It is characterized by comprising. FIG.
- FIG. 5 shows an example of the substrate according to the second embodiment of the present invention.
- an angle formed by the spot plane on the top of the protruding spot portion and the side surface of the protruding spot portion is 90 degrees or more. Preferably, it is 90 to 135 degrees.
- FIG. 2A is a cross-sectional view of a part of the substrate of the present invention.
- “the angle formed by the spot plane at the top of the projecting spot portion and the side surface of the projecting spot portion” means the angle 0 in FIG. 2 (a).
- the angle ⁇ can be determined, for example, from a cross section of the protruding spot portion cut perpendicularly to the substrate surface around the protruding spot portion.
- the angle between the spot plane on the top of the projecting spot portion and the side surface of the projecting spot portion is 90 degrees or more, Since the size of the bottom of the cutting part is larger than the size of the spot plane on the top of the protruding spot part, the gridting is performed automatically and the position and size of the spot for immobilizing biomolecules are specified. There is an advantage that can be. Hereinafter, this point will be described in detail. As shown in Fig.
- the confocal point detector detects only the reflected light from the spot plane on the top of the protruding spot, and does not detect the reflected light from the side surface.
- an image corresponding to the spot plane on the top of the protruding spot is obtained as a reflection image, and the portion corresponding to the side surface of the protruding spot is black because almost no reflected light is detected. It appears as a border of In this reflection image, the inside of the black border corresponds to the biomolecule spot, and the size and position of the spot can be specified by this reflection image.
- automatic gridting can be performed based on such a principle.
- the focus of the confocal detector is If the height of the spot plane on the top of the protruding spot is adjusted, the reflected light from the substrate surface around the protruding spot is not focused, so the top of the protruding spot is Force is much weaker than the reflected light from the upper spot plane and is not detected. In the present invention, it is also possible to perform automatic dalitting using this height difference.
- the height of the protruding spot is smaller than the depth of focus of the confocal detector used for detecting the interaction, as described above, it corresponds to the side of the protruding spot in the reflected image. If the spot appears as a black border, the size and position of the spot can be specified.
- the height of the protruding spot portion is If the depth of focus is greater than or equal to the depth of focus of the confocal detector used to detect the spot, the position of the spot plane and the position of the spot The size can be specified and the grinding can be performed automatically.
- the shape of the protruding spot portion may be, for example, a column shape or a prism shape.
- the angle formed between the spot plane on the top of the protruding spot portion and the side surface of the protruding spot portion is 90 degrees or more, and around the protruding spot.
- the substrate surface may be a substrate forming a substantially V-shaped bottom surface.
- the reflected light intensity from the spot plane detected by the confocal detector becomes stronger than the reflected light intensity from the part other than the spot plane on the substrate.
- FIG. 4 is an enlarged view of a part of a substrate having a “substantially V-shaped bottom surface”.
- the “substantially V-shaped bottom surface” refers to, for example, a protrusion between adjacent protrusion spots. This means that the surface of the substrate around the pot portion is not flat, but forms a substantially V shape as shown in FIG. Furthermore, the substrate according to the first aspect of the present invention is characterized in that at least the surface of the substrate around the protruding spot portion, the side surface of the protruding spot portion, and the spot plane are made of a conductive material. In consideration of ease of manufacture and manufacturing cost, it is preferable that the substrate according to the first aspect of the present invention, other than the periphery of the projecting spot on the substrate, be made of a conductive material.
- the substrate according to the second aspect of the present invention is characterized in that at least the side surface of the projecting spot and the plane of the projecting spot are made of a conductive material.
- the substrate surface around the projecting spot portion, the side surface of the projecting spot portion, and the spot plane are at least in the substrate of the second aspect,
- the projecting spot portion side surface and the spot plane are made of a conductive material.
- an electrode facing the substrate is provided, and by applying an electric field, the biomolecules fixed to the spot plane are formed. Interaction with the target biomolecule can be promoted.
- a good interaction result can be obtained even when the concentration of the target biomolecule is low, and a predetermined interaction result can be obtained in a shorter time when the concentration is the same.
- the conductive substance has a property of reflecting light
- the size and position of the biomolecule-immobilized spot can be specified by the reflected light, and the dalitting can be automatically performed. it can. This will be described later.
- the height of the protruding spot can be appropriately set so as to be equal to or higher than the depth of focus of the confocal detector used for detecting the interaction.
- the height of the protruding spot can be, for example, 10 to 500 ⁇ .
- automatic glitching when performing automatic glitching by detecting a difference in reflected light intensity due to a difference in shape between the spot plane at the top of the projecting spot portion on the substrate and the other portion, even if the height of the protruding spot is smaller than the depth of focus of the confocal detector used for detecting the interaction, automatic gliding can be performed. This point will be described later.
- the height of the projecting spot it is necessary to consider the diameter of a needle used for spot formation (stamping) of a biomolecule and the spot amount of a biomolecule solution such as a probe nucleic acid. For example, when spotting biomolecules on a circular projecting spot with a diameter of 100 ⁇ using a needle with a diameter of about 130 zm, if the height of the projecting spot is 15 ⁇ or more, The surface tension is preferable because the biomolecule is immobilized only on the fixing spot without the biomolecule solution flowing out of the spot plane on the top of the projecting spot.
- the shape of the spot plane on the top of the protruding spot portion can be any shape as long as it can hold the spotted biomolecules, for example, a circle or a square. be able to.
- the size of the spot plane can be appropriately set according to the amount of the biomolecule solution to be spotted and the needle used for the spot, and can be, for example, 10 to 500 ⁇ .
- spot The “size of the spot plane” means, for example, the diameter of the spot plane when it is circular, and the length of one side when the spot plane is square.
- the shape of the bottom surface of the protruding spot portion is not particularly limited, but is preferably the same shape as the spot plane in consideration of ease of manufacturing and the like. FIG.
- FIG. 2 (b) is a schematic view of a protruding spot on the substrate of the present invention.
- the shape of the bottom surface of the protruding spot refers to the hatched portion in FIG. 2 (b).
- the spot plane on the top of the protruding spot may be roughened.
- the spot plane on the top of the protruding spot portion has irregularities in the depth direction and the substantially horizontal direction with a depth within the focal depth of the confocal detector used for detecting the interaction. Is also good.
- Figure 3 shows an example (partially enlarged view) of a roughened spot plane.
- the spot plane is roughened in this way, as described later, when the enrichment effect of the target biomolecule by electrophoresis or dielectrophoresis is obtained, the spots on the irregularities (edges) are strongly affected. There is an advantage that an electric field is generated and the interaction is further promoted.
- the method for roughening the spot plane is not particularly limited.
- the substrate of the present invention is a plastic molded substrate, a microfabricated mold in which a base material etched by photolithography is anti-transferred by an electrolysis method is used. By using this, a substrate having a rough spot plane can be manufactured.
- the substrate of the present invention may be such that the entire substrate is made of a conductive substance, or has a conductive substance coating layer on the surface of the substrate.
- the conductive material is selected from materials having a property of reflecting light.
- the conductive substance is selected from metals having a thiol group and a binding property.
- the conductive material for example, a metal (e.g., gold, nickel, platinum, silver, titanium, aluminum, stainless steel, copper), conductive oxides (eg, I n 2 0 5 / S n 0 2) and the conductive Functional plastics (for example, polyacetylene).
- a substrate having a conductive material coating layer include a substrate in which the surface of a substrate such as glass, silicon, plastic, or polypropylene is coated with the conductive material.
- the thickness of the conductive material coating layer on the substrate is not particularly limited, and may be, for example, 0.1 to 10 ⁇ .
- the molten metal is injected into a mold having a concave portion corresponding to a projecting spot portion having a desired shape, thereby forming the substrate.
- Substrate can be obtained.
- a metal substrate can be obtained by press molding.
- the substrate of the present invention can also be a substrate in which a conductive substance is coated on a metal substrate.
- the substrate of the present invention has a coating of a conductive substance on a silicon or plastic substrate
- a silicon or plastic substrate is used. Molded plastic and its silicon
- the substrate of the present invention can be obtained by coating a conductive substance on a plastic substrate by vapor deposition, plating, or the like. Further, the substrate of the present invention can also be manufactured by forming a projecting spot portion by etching or the like after coating a conductive coating layer on a flat substrate.
- a method for manufacturing a substrate when the substrate of the present invention has a gold coating layer on a glass substrate will be described. However, the present invention is not limited to this embodiment.
- chromium, titanium, nickel, and the like are deposited on the surface of the slide glass by a vacuum deposition apparatus, and then gold is deposited thereon.
- a positive resist is applied on the gold-deposited slide glass by a spin coater and baked in an oven at 60 ° C. for 1 hour, for example.
- the slide glass is irradiated with ultraviolet light through a photomask by an ultraviolet exposure apparatus.
- a photomask having a pattern corresponding to the projecting spot portion having a desired shape is used.
- a resist pattern can be formed on the surface of the slide glass with gold vapor deposition.
- the gold surface around the resist pattern is etched with a gold etchant. After the substrate after the gold etching is washed with ultrapure water, further etching is performed with an etchant to remove chromium, titanium, nickel, and the like deposited under the gold, and the substrate is washed with ultrapure water.
- the size of the entire substrate and the number of projecting spots on the substrate are not particularly limited, and can be appropriately set.
- the substrate of the present invention can have about 100 to 500,000 protruding spots on a substrate having a size of 10 to 20 mm2.
- a nucleic acid microarray of the present invention is a biomolecular microarray comprising the substrate of the present invention and a biomolecule, wherein the biomolecule is immobilized on at least a spot plane on the substrate.
- the biomolecule comprises DNA, RNA, PNA, protein, polypeptide, sugar compound, lipid, natural small molecule, and synthetic small molecule. It can be at least one selected from the group, and can be selected according to the purpose.
- examples of the sugar compound include a monosaccharide, an oligosaccharide, a polysaccharide, a sugar chain complex, a glycoprotein, a glycolipid, and a derivative thereof.
- lipids examples include fatty acids, phospholipids, glycolipids, and glycerides.
- Examples of natural small molecules include honolemon molecules, antibiotics, poisons, vitamins, bioactive substances, and secondary metabolites.
- the synthetic small molecule examples include a synthetic product of a natural small molecule and a derivative thereof.
- the projecting spot portion is used to immobilize the probe nucleic acid on the biomolecule fixing spot (projecting spot portion).
- a solution containing a nucleic acid having at one end a group reactive with a metal on the top spot plane can be used as a spotting solution.
- groups include thiol groups. Immobilization of the thiol group-containing nucleic acid chain on the metal surface can be performed by a known method.
- a method of immobilizing DNA on a metal surface a method of performing the following treatment on a metal (having a surface oxide film activated and presenting a hydroxyl group) can also be used.
- aminated DNA is immobilized on the substrate surface treated with aminosilane and then with glutaraldehyde.
- Carboxylated DNA is immobilized on the aminosilane-treated substrate surface.
- the thiolated DNA is immobilized on the thiolsilane-treated substrate surface.
- immobilization by UV irradiation and immobilization via functional groups such as thiol, amino, carboxyl, and phosphate groups as described above are also possible.
- the spotting of the biomolecule solution onto the spot plane can be performed by an ordinary method, for example, by contacting a needle holding a biomolecule solution at the tip with the spot plane at the top of the projecting spot. Can be. Examples of the spotting device used here include the devices described in JP-A-2001-46062 and JP-A-2003-57236.
- the amount of the spot is adjusted so that the biomolecule solution does not flow out from the spot plane. It can be set appropriately according to the size of the working plane and the height of the projecting spot.
- the invention further provides
- An apparatus for promoting interaction of biomolecules comprising:
- the substrate constituting the biomolecule microarray has a biomolecule-immobilizing spot (projecting spot portion) projecting from the substrate surface and having a spot plane on the top.
- At least the protruding spot has a conductive material surface
- a biomolecule is immobilized on the conductive material surface of the spot plane, and the biomolecule-immobilized spot is formed;
- the device for promoting interaction of biomolecules characterized in that the substrate has, on a surface other than the projecting spot portion on the substrate, a terminal capable of conducting electricity with the surface of the conductive material of the projecting spot portion.
- biomolecule interactions include, for example, hybridization between a probe nucleic acid and a target nucleic acid, an antigen-antibody interaction, a receptor ⁇ -1 ligand interaction, a protein-protein interaction, a DNA- Protein interactions.
- the surface of the substrate other than the protruding spots has a conductive material coating layer, and the terminal is formed of a conductive material coating layer or a conductive material coating layer. It is preferable that the conductive material coating layer of the bracket and the conductive material surface of the projecting spot are provided as an integral conductive material coating layer.
- the biomolecule microarray in the device can be the biomolecule microarray of the present invention. Further, the present invention provides a method for promoting the interaction of biomolecules using the device for promoting the interaction of biomolecules,
- a solution containing a target biomolecule is arranged between the microarray and the electrode, and
- the biomolecule microarray in the device has a projecting spot portion
- the biomolecule microarray is provided so as to face a plane on which the biomolecules are fixed on the top of the projecting portion on the microarray and a surface of the microphone opening array having the biomolecule spot.
- the electric field density increases between the surface of the electrode (counter electrode) and the surface opposite to the plane, and the target biomolecules in the solution can be electrophoresed (when a DC power supply is used) or dielectrophoresis (using an AC power supply). Is concentrated in the vicinity of the protrusion.
- FIG. 6 (a) is a schematic view of the device for promoting the interaction of biomolecules of the present invention.
- the counter electrode can be a substrate made of a conductive material, for example, a metal, a conductive oxide, a conductive plastic, or the like. Further, a conductive material coating layer is provided on a surface facing the microarray. It can also be composed of a substrate having In the present invention, in particular, if the counter electrode is a transparent electrode such as ITO (indium tin oxide) or tin oxide, the confocal type is simultaneously formed from above the transparent electrode during the interaction of biomolecules. The detector can detect reflected light and fluorescence, and the interaction can be detected in real time.
- ITO indium tin oxide
- tin oxide indium tin oxide
- the substrate constituting the biomolecule microarray may be a substrate in which a transparent conductive coating layer is provided on light-transmitting glass or plastic, or may be a case where the entire substrate is made of a transparent conductive material.
- a power supply for applying an electric field between the biomolecule microarray and the counter electrode may be a DC power supply or an AC power supply. More preferably, an AC power supply is used.
- a DC power supply when a high voltage is applied, the target biomolecule solution is electrolyzed by the high voltage, and there is a concern that bubbles and the like are likely to be generated. Therefore, it is preferable to use a low voltage.
- the DNA When using DNA as a target biological molecule, the DNA is negatively charged.When using a DC power supply, an electric field is applied so that the projecting spot side becomes positive. Is preferably added.
- an AC power supply it is preferable to use a high-frequency AC because low-frequency AC may cause bubbles or the like to be generated due to electrolysis of the target biomolecule solution.
- a spacer made of a non-conductive material may be interposed between the biomolecule microarray and the counter electrode so as not to cover the region having the projecting spot of the biomolecule microarray. it can. Examples of the non-conductive material include rubber, glass, and plastic.
- the distance between the spot plane on the biomolecule microarray and the counter electrode can be set by the thickness of the spacer, and the spacer is surrounded by the spacer.
- the filled space can be filled with a solution containing the target biomolecule.
- the distance between the spot plane and the counter electrode can be appropriately set within a range in which the effect of target molecule bioconcentration by electrophoresis or dielectrophoresis can be obtained.For example, 1 to 500 ⁇ can do.
- the interaction promoting device further includes a temperature control means such as a heater. The interaction can be further promoted by controlling the environment around the biomolecule to a temperature suitable for the interaction by the temperature control means.
- the electric field applied between the biomolecule microarray and the counter electrode may be determined by electrophoresis or dielectrophoresis while considering the distance between the biomolecule microarray and the counter electrode.
- the concentration can be appropriately set within a range in which the effect of concentration can be obtained. For example, it can be set to 0.001 to 1 OMV / m.
- the type of buffer used for the target biomolecule solution It is preferable to appropriately set the applied electric field so as to obtain a high interaction promoting effect in accordance with the conditions.
- the target biomolecules used in the above-described interaction promoting method are fluorescence-labeled in order to detect the interaction between biomolecules by detecting fluorescence with a confocal detector.
- the fluorescent labeling of the target biomolecule can be performed by a known method.
- the biomolecules immobilized on the microarray may be fluorescently labeled. Fluorescent labeling of biomolecules immobilized on the microarray can also be performed by a known method.
- the target biomolecule solution may include a buffer. As a preferred buffer used for the target biomolecule solution, about
- the pH is preferably in a neutral region.Therefore, it is preferable to use a buffer having a buffering capacity in the neutral region. preferable.
- buffers containing the following buffer substances phenylalanine, carnosine, arginine, histidine, MES (2- (morpholine) ethanesulfonic acid), maleic acid, 3,3-dimethylglutaric acid , Carbonic acid, 4-Hydroxymethylimidazole, Cuenoic acid, Dimethinoleaminoethylamine, Prolinic acid, Glycerol-2-phosphate, PIPES (Piperazine- ⁇ -bis (2-ethanesulfonate)), Ethylenediamine, Imidazole, MOPS (3-( ⁇ morpholine) propanesulfonate), Phosphoric acid, TES Tris (hydroxymethyl) methyl-2-aminoethanesulfonate, 4-Methylimidazole, HEPES (2-Hydroxitytyl piperazine--2 -Ethanesulfonic acid), ⁇ ethylmorpholine, tri
- the conductivity is used 1 0 ⁇ 5 0 0 ⁇ ⁇ 1 / !!! buffer, the conductivity is used 1 0 ⁇ 1 0 0 ⁇ 1 / !!! buffer Is more preferred. If the conductivity of the buffer is within the above range, the interaction of biomolecules can be favorably promoted.
- the concentration of the buffer is preferably adjusted appropriately so as to obtain a conductivity within the above range.
- a specific example of a preferable buffer includes a buffer containing phenylalanine, histidine, carnosine, and anoreginin as a substance of the buffer.
- Example 5 when hybridization of a probe nucleic acid and a target nucleic acid is performed using a target biomolecule solution containing phenylalanine, a particularly high hybridization signal intensity can be obtained.
- the application of an electric field can obtain a hybridization signal intensity twice or more as compared with the case where no electric field is applied.
- phenylalanine is a buffer substance particularly effective in the present invention in which the interaction of biomolecules is promoted by applying an electric field.
- the electric field applied between the microarray and the electrode is preferably set appropriately according to the buffer used so that a high biomolecular interaction promoting effect can be obtained.
- phenylalanine when used as a buffer, 0.5 to 1.0 MV / m, for histidine, 0.5 to 1.0 MV / m, and carnosine for 0.25 to 0.75 MVZm, for arginine, 0.1 to 0.3
- the present invention further provides a bioarray-immobilized spot of the microarray of the present invention, which is placed in an environment capable of interacting with the target biomolecule or placed in an environment capable of interacting with the target biomolecule.
- the present invention also relates to a method for detecting an interaction between biomolecules, wherein the interaction between the biomolecule and the target biomolecule is detected by a confocal detector.
- the principle of detection of reflected light and fluorescence by the confocal detector is as described above.
- the method for detecting an interaction according to the present invention by using a confocal detector, the size and position of a spot are specified by a reflected image according to the above-described principle, whereby automatic gliding can be performed.
- the biomolecule-immobilized spot on the microarray is reflected by the difference in the reflected light intensity due to the difference in height and / or shape between the biomolecule-immobilized spot on the microarray surface and the other portion. It can be detected as an image. Further, when fluorescence from the microarray is detected by the confocal detector, if the confocal detector is focused on the height of the spot plane at the top of the projecting spot on the microarray, the spot plane can be detected. By selectively detecting the fluorescence from the fluorescently labeled biomolecule (the biomolecule Z immobilized on the spot or the target biomolecule), a fluorescent image corresponding to the spot can be obtained.
- a spot where an interaction occurs on a microarray can be specified by superimposing the reflection image and the fluorescence image thus obtained, and the degree of the interaction is measured based on the fluorescence intensity.
- an interaction is detected by measuring the fluorescence from an interpolator using an intercalator.
- a confocal scanner which can simultaneously detect reflected light and fluorescence.
- FIG. 7 An example of such a device is shown in FIG. In the device shown in Fig. 7, the excitation light generated from the excitation light source (laser) 21 passes through the mirror 22, the dichroic mirror 23, the mirror 26, and the objective lens 24 to the sample (microarray) 25. Irradiated.
- Reflected light is objective lens 24, mirror 26, dichroic mirror 23 (a part of reflected light is transmitted (less than a few percent)), dichroic mirror 27, neutral density filter 28, detection lens 29, pin
- the light is guided to the reflected light detector 31 via the hole 30.
- the fluorescent light passes through the two dichroic mirrors 23 and 27, is reflected by the mirror 32, and is guided to the fluorescent light detector 36 via the cut filter 33, the detection lens 34 and the pinhole 35.
- the biomolecule-immobilized spot on the microarray is reflected from the difference in the reflected light intensity due to the difference in height and / or shape between the biomolecule-immobilized spot on the microarray surface and the other part.
- the present invention provides a method for contacting a solution containing a target biomolecule with a biomolecule microarray having one or more spots on which immobilized biomolecules are immobilized on a substrate surface, Wherein the solution containing the target biomolecule contains phenylalanine, and the solution so that the target biomolecule in the solution migrates toward the biomolecule-immobilized spot.
- Methods for contacting a solution containing a target biomolecule with a biomolecule microarray include a method of immersing a biomolecule microarray in a solution containing a target biomolecule, and a method containing a solution containing a target biomolecule in a microarray. And a method of dropping on a surface containing a biomolecule-immobilized spot. Further, as described later, when an electrode facing the microarray is provided, a solution containing a target biomolecule can be brought into contact with the biomolecule microarray by disposing a solution between the microarray and the electrode. .
- an electric field is applied to the solution so that the target biomolecules in the solution containing the target biomolecules migrate toward the biomolecule-immobilized spot on the substrate.
- the target biomolecule when an electric field is applied using a DC power supply, the target biomolecule is electrophoresed toward a biomolecule-immobilized spot on the substrate, and when an electric field is applied using an AC power supply, The target biomolecule performs dielectrophoresis toward the biomolecule-immobilized spot on the substrate.
- the target biomolecule in the vicinity of the biomolecule spot is applied by applying an electric field and causing the target biomolecule to migrate toward the biomolecule spot on the substrate. It can increase the concentration and promote biomolecular interactions.
- biomolecule interaction is remarkably promoted by incorporating phenylalanine, which has a low conductivity and a remarkably high biomolecule interaction promoting effect by applying an electric field, into the target biomolecule solution.
- the conductivity of phenylalanine used in the method for interacting biomolecules of the present invention is preferably from 10 to 500 ⁇ - 1 "!!!, ⁇ 1 0 0 ⁇ ⁇ is more preferably an 1 / m. concentration of phenylene Ruaranin, as conductivity of the range is obtained, a method of interaction are preferred.
- the biomolecule microarray used in (1) can be a biomolecule microarray having an electrode provided with a biomolecule-immobilized spot on the surface thereof on a substrate.
- an electrode facing the electrode on the substrate can be used.
- An electric field is applied between the two electrodes while a solution containing a biomolecule solution is in contact with the two electrodes.
- a microarray having electrodes provided on a substrate and electrodes facing the electrodes on the substrate, and a solution containing a target living body disposed between the microarray and the electrodes; It is also possible to use the biomolecule interaction promoting device of the present invention, which can contact a solution containing molecules.
- the electric field applied between the electrodes is as described in the description of the biomolecule interaction promoting device of the present invention.
- the present invention provides a biomolecule microarray having at least one spot on which a biomolecule is immobilized on a substrate surface, and bringing a solution containing a target biomolecule into contact with the biomolecule microarray.
- the solution containing the target biomolecule contains at least one buffer substance selected from the group consisting of phenylalanine, histidine, carnosine, and arginine,
- the substrate is at least on the same surface as the surface on which the biomolecule-fixed spot is provided,
- a pair of opposing electrodes is provided such that a biomolecule-immobilized spot is located between the pair of electrodes;
- the types of biomolecules used in the method, the method for immobilizing the biomolecules on the substrate surface, and the types of biomolecular interactions are as described above.
- Methods for bringing a solution containing a target biomolecule into contact with a biomolecule microarray include a method of immersing a biomolecule microarray in a solution containing a target biomolecule, and a method containing a solution containing a target biomolecule. A method of dropping the solution on a surface including a molecule-immobilized spot may be used.
- the substrate used in the above method has at least one pair of opposed electrodes on the same surface as the surface on which the biomolecule-immobilized spot is provided, and the biomolecule-fixed spot is located between the pair of electrodes. It is provided as follows.
- Figure 1 shows an example of such a substrate.
- the substrate shown in FIG. 13 is one in which a layer made of a conductive material is formed on a part of the substrate by, for example, photolithography technology or the like to form a pair of counter electrodes.
- a biomolecule microarray produced by immobilizing biomolecules on such a substrate can be used.
- a biomolecule microarray having a biomolecule-immobilized spot between electrodes is brought into contact with a solution containing a target biomolecule; and An electric field is applied between the electrodes in a state where is brought into contact with.
- the target biomolecule is directed toward the biomolecule-immobilized spot by dielectrophoresis (when an AC power source is used) or electrophoresis (when a DC power source is used), and the target biomolecule concentration near the biomolecule-fixed spot is detected.
- the interaction of biomolecules can be promoted.
- at least one buffer substance selected from the group consisting of phenylalanine, histidine, carnosine, and arginine, particularly phenylalanine, which has a remarkably high biomolecular interaction promoting effect by applying an electric field is used as a target.
- the electric field applied between the electrodes can be appropriately set within a range in which the effect of enriching the target biomolecule by electrophoresis or dielectrophoresis can be obtained according to the type of the buffer substance to be used. .0 MV / m. Further, it is preferable to use a high frequency AC power supply for the reason described above.
- the conductivity of at least one buffer substance selected from the group consisting of phenylalanine, histidine, carnosine, and arginine used in the method for interacting biomolecules of the present invention is as follows. 0 ⁇ 5 0 0 Q - 1 / is preferably m is, 1 0 ⁇ 1 0 ⁇ 1 / !!! more preferably is les. It is preferable to appropriately adjust the concentration of the buffer substance so as to obtain a conductivity in the above range. Examples Hereinafter, the present invention will be further described with reference to Examples. Example 1
- Chromium was deposited to a thickness of 25 OA on the surface of the polished slide glass by a vacuum deposition apparatus, and then gold was deposited thereon to a thickness of 250 OA.
- Positive resist S 1813 (Shipley Co.) was applied on a gold vapor-deposited slide glass with a spin coater and baked in a 60 ° C oven for 1 hour.
- the slide glass was irradiated with ultraviolet light through a photomask by an ultraviolet exposure apparatus.
- a photomask a circle having a diameter of 200 / zm and a square pattern having a side length of 200 m each having 11 ⁇ 11 patterns were used.
- development was performed with a developing solution CD-26 (Shipley) to form a circular and square resist pattern having a diameter of about 200 ⁇ on the gold surface.
- the above-mentioned gold-patterned glass substrate was immersed in 4.6% hydrofluoric acid for 50 minutes.
- the glass surface is corroded to a depth of about 50 m and the undercut also erodes under the gold pattern from the lateral direction, resulting in a circle with a diameter of about 200 Attn and a square pattern with a side of about 200 ⁇ .
- FIG. 8 a) is a photograph of the substrate manufactured in Example 1 taken with a digital camera. It can be seen from the image that the irregularities are formed.
- Figure 8b) is a three-dimensional image of an optical section of a square spot taken with a confocal microscope. It can be seen that a projecting spot having a spot plane at the top is formed on the substrate. The height of the square spots had a height of about 50 / m.
- the size of the spot plane on the substrate obtained in Example 1 was 90 ⁇ , and the angle between the substrate surface around the projecting spot and the side of the projecting spot was 110 °. .
- Example 2 Example 2
- a 5 ′ monofluorescent dye Cy 3 labeled DNA solution (tatgacaatg aatacggcta cagcaa cagg gtggtggacc tcatg (SEQ ID NO: 1) (gene name GAPDth solution composition: 50 ⁇ in 1 X microspotting solution (Telechem)) was supplied by RIKEN.
- Developed DN A The arrayer stamped the spot plane on the top of the projecting spot of the nucleic acid microarray substrate prepared in Example 1.
- the tip of the stamp needle was a circle with a diameter of 130 m.
- the fluorescence and reflected light from the substrate on which the DNA solution was stamped were measured using a DNA microarray scanner capable of simultaneously measuring fluorescence and reflected light as shown in FIG.
- the fluorescence image, (b) is the reflected light image, and (c) is the superposition of the two images.
- the fluorescent image is displayed in red and the reflected image is displayed in green.
- a circular fluorescent image displayed in red could be observed
- a square fluorescent image displayed in red could be observed, and these fluorescent images were displayed in green.
- the substrate of the present invention it matched the shape of the spot on the fluorescence image, demonstrating that the DNA stamp solution was stamped only on the spot plane at the top of the protruding spot on the substrate.
- the focal depth for reflection of the scanner used in this example was 500 ⁇
- the surface of the substrate around the protruding spot (the height difference from the spot plane on the top of the protruding spot: 50 m)
- the reflected light from the spot was detected with almost the same intensity as the reflected light from the spot plane.
- the angle between the substrate surface around the projecting spot and the side of the projecting spot was 110 degrees, the portion corresponding to the side in the reflection image was blackened.
- the DNA microarray and the ITO electrode were faced to each other, a 0.17 mm glass was inserted between them for insulation, and the substrate and the electrode were fixed with clips.
- a hybridization solution (cRNA: 1.45 g (equivalent to 0.05 ⁇ g of mRNA), hybridization buffer: 50 mM histidine) containing the above target in a space of 0.17 mm
- cRNA 1.45 g (equivalent to 0.05 ⁇ g of mRNA)
- hybridization buffer 50 mM histidine
- a positive electrode was connected to the DNA microarray side, a negative electrode was connected to the ITO electrode, and a 3V DC charge was applied for 2 minutes at room temperature. Thereafter, washing was performed with 2 ⁇ SSC + 0.1% SDS, 1 ⁇ SSC (150 raM sodium chloride, 15 mM sodium citrate), and 0.1 ⁇ SSC.
- the sample with charge (a) was brighter than the sample without charge (b).
- the correlation between the target concentration and the fluorescence intensity is shown in Fig. 12. From Fig. 11 and Fig. 12, an AC charge was applied between the microarray and the counter electrode.
- the effect of promoting the hybridization by dielectrophoresis can be obtained, and in this example, the fluorescence signal depending on the target concentration was obtained, and the signal was obtained by the negative control. Since no detection was detected, the degree of hybridization was measured based on the fluorescence intensity. You can see that you can do it. Also, by superimposing the fluorescence image of FIG. 11 (a) on the reflection image of FIG. 11 (c), it is possible to identify the spot where the hybridization has occurred.
- the substrate prepared in Example 1 was stamped with a probe DNA solution (1 ⁇ microspotting solution (Telechem), 0.1 ° / oTween20) at a concentration of 180 ⁇ using a high-density arrayer.
- the stamped probe gene is GAPDH (5, -gcagtggcaa agtggagatt gttgccatca acgacccctt cattg-3 '(SEQ ID NO: 8)), and the one modified with the linker for array 1 (Nisshinbo Industries, Inc.) on the 5, side did.
- the substrate was irradiated with UV at 600 nJ m 2 , washed twice with ultrapure water for 5 min.
- the hybridization reaction was performed while applying an electric field of 1 MHz ⁇ Vp-p 0 to 50 V between the microarray and the counter electrode for 10 minutes. After the reaction, the array was washed, and the hybridization signal intensity was calculated. The results are shown in FIG. (A) is a graph showing the correlation between the applied electric field and the intensity of the hybridization signal, and (b) is the result obtained when the hybridization was performed without applying the electric field. It is a graph which shows the intensity ratio with a signal (henceforth "signal increase rate"). In addition, Table 1 below summarizes the results for each buffer at the electric field where the signal increase rate was the maximum.
- the electric field of phenylalanine is 6.54 times higher than that of 0.83 ⁇ 4 ⁇ -/ 111, and that of L-histidine is 0.40 times that of electric field-free hybridization. 3.66 times at 78M Vp-p / m, carnosine 2.16 times at 0.53M Vp-p / m, L-arginine 2.66 times at 0.25M Vp-p / m
- the hybridization signal increase rate was shown ( Figures 3-1, 2: the figure number was changed later).
- the substrate prepared in Example 1 was stamped with a probe DNA solution (1 ⁇ microspotting solution (Telechem), 0.1% Tween20) at a concentration of 180 ⁇ M using a high-precision arrayer.
- the names and sequences of the 11 types of stamped probe genes are as shown in Table 2 below, and the 5′-side modified linker for array (Nisshinbo Industries, Ltd.) was used.
- the substrate was irradiated with UV light at 600 mJ / cm 2 , washed twice with ultrapure water for 5 min. X, and dried.
- a target DNA solution (5 ng / ⁇ l Cy3_ mouse brain cDNA, 50 mM L-histidine)
- the mixture was heated at 95 ° C for 1 minute and left at room temperature for 2 minutes.
- the DNA microarray thus obtained was placed on a thermal cycler set at 45 ° C, and a 30-mm-thick insulating film (Teijin Dupont film) was placed around the array as a spacer, and the target DNA solution was collected. 20 ⁇ l was applied to the stamp area. Then slide glass substrate (counter electrode) coated with ⁇ 0 (indium tin oxide) film Cover and fix both substrates.
- the hybridization reaction was performed between the microarray and the counter electrode for 20 minutes at 1 MHz while applying an electric field at 3 O Vp-p. After the reaction, the array was washed with 2 ⁇ SSC / 0.1% SDS, 1 ⁇ SSC, and 0.2 ⁇ SSC solution at room temperature for 5 minutes each, and then subjected to a fluorescence scanner (Gene Scope II; Gene Focus). (Gene Focus) was used to calculate the hybridization signal intensity.
- the upper part of FIG. 15 shows the intensity ratio between the signal obtained when the electric field was not applied and the signal obtained when the electric field was applied.
- the lower column of FIG. 15 shows a graph obtained by plotting the signal intensity when an electric field is applied on the vertical axis and the signal when no electric field is applied on the horizontal axis for each sequence. '
Description
Claims
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EP04745956A EP1643248A4 (en) | 2003-06-13 | 2004-06-09 | SUBSTRATE FOR BIOMOLECULE MICROARRAY, BIOMOLECULE MICROARRAY, DEVICE AND METHOD FOR ACCELERATING INTERACTIONS, AND METHOD FOR DETECTING INTERACTIONS |
US10/560,584 US7541195B2 (en) | 2003-06-13 | 2004-06-09 | Substrate for biomolecule microarray, biomolecule microarray, device and method of promoting interaction, and method of detecting interaction |
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JP2003391083A JP4464664B2 (ja) | 2003-06-13 | 2003-11-20 | 生体分子マイクロアレイ用基板、生体分子マイクロアレイ、相互作用促進用装置および方法、ならびに、相互作用の検出方法 |
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JP4877297B2 (ja) * | 2002-11-22 | 2012-02-15 | 東レ株式会社 | 選択結合性物質が固定化された基材を用いた被験物質の検出方法 |
JP4632400B2 (ja) * | 2003-12-16 | 2011-02-16 | キヤノン株式会社 | 細胞培養用基板、その製造方法、それを用いた細胞スクリーニング法 |
JP2005249407A (ja) * | 2004-03-01 | 2005-09-15 | Yokogawa Electric Corp | 生体高分子のマイクロアレイ用基板およびハイブリダイゼーション装置およびハイブリダイゼーション方法 |
JP4610309B2 (ja) * | 2004-11-19 | 2011-01-12 | 独立行政法人理化学研究所 | 生体分子を相互作用させる方法、および、生体分子を移動させる方法 |
WO2006054449A1 (ja) * | 2004-11-18 | 2006-05-26 | Riken | 生体分子の相互作用試験装置、生体分子の相互作用試験方法、生体分子の融解温度測定方法、核酸の配列検知方法、生体分子を相互作用させる方法、および、生体分子を移動させる方法 |
JP4800739B2 (ja) * | 2005-10-20 | 2011-10-26 | デンカ生研株式会社 | アッセイ用媒体及びアッセイ方法 |
WO2007074923A1 (ja) * | 2005-12-27 | 2007-07-05 | Olympus Corporation | 発光測定装置並びに発光測定方法 |
KR100813262B1 (ko) * | 2006-07-25 | 2008-03-13 | 삼성전자주식회사 | 광 촉매를 이용한 패터닝된 스팟 마이크로어레이의 제조방법 및 상기 방법에 의해 제조된 마이크로어레이 |
WO2008021758A1 (en) * | 2006-08-11 | 2008-02-21 | Home Diagnostics, Inc. | Methods for fabricating a biosensor with a surface texture |
JP2008249439A (ja) * | 2007-03-30 | 2008-10-16 | Sumitomo Bakelite Co Ltd | マイクロアレイ用基板及びその使用方法 |
JP5817378B2 (ja) * | 2011-01-28 | 2015-11-18 | 東レ株式会社 | マイクロアレイの解析方法および読取り装置 |
EP2908089B1 (en) | 2012-10-12 | 2022-04-13 | Toray Industries, Inc. | Height difference detection method, microarray analysis method and fluorescence reading device |
JP6694635B2 (ja) * | 2014-12-26 | 2020-05-20 | 国立大学法人大阪大学 | マイクロrnaにおけるメチル化修飾部位を計測する方法 |
WO2019012776A1 (ja) * | 2017-07-11 | 2019-01-17 | 浜松ホトニクス株式会社 | 試料観察装置及び試料観察方法 |
JP2020150946A (ja) * | 2020-04-13 | 2020-09-24 | 国立大学法人大阪大学 | マイクロrnaにおけるメチル化修飾部位を計測する方法 |
KR102456181B1 (ko) * | 2020-07-30 | 2022-10-18 | 참엔지니어링(주) | 돌기형 결함 리페어 장치 |
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US7541195B2 (en) | 2009-06-02 |
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JP4464664B2 (ja) | 2010-05-19 |
JP2005024532A (ja) | 2005-01-27 |
EP1643248A1 (en) | 2006-04-05 |
US20070037155A1 (en) | 2007-02-15 |
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