WO2015064757A1 - 検出装置、当該検出装置を用いた検出方法および当該検出装置に用いられる検出チップ - Google Patents
検出装置、当該検出装置を用いた検出方法および当該検出装置に用いられる検出チップ Download PDFInfo
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- WO2015064757A1 WO2015064757A1 PCT/JP2014/079125 JP2014079125W WO2015064757A1 WO 2015064757 A1 WO2015064757 A1 WO 2015064757A1 JP 2014079125 W JP2014079125 W JP 2014079125W WO 2015064757 A1 WO2015064757 A1 WO 2015064757A1
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- G—PHYSICS
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- 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
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
- G01N21/552—Attenuated total reflection
- G01N21/553—Attenuated total reflection and using surface plasmons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/0332—Cuvette constructions with temperature control
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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
- G01N21/6428—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
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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
- G01N21/648—Specially adapted constructive features of fluorimeters using evanescent coupling or surface plasmon coupling for the excitation of fluorescence
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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
- G01N33/551—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals the carrier being inorganic
- G01N33/553—Metal or metal coated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/16—Reagents, handling or storing thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/06—Auxiliary integrated devices, integrated components
- B01L2300/0627—Sensor or part of a sensor is integrated
- B01L2300/0636—Integrated biosensor, microarrays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/06—Auxiliary integrated devices, integrated components
- B01L2300/0627—Sensor or part of a sensor is integrated
- B01L2300/0654—Lenses; Optical fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
- B01L2300/1805—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks
- B01L2300/1816—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks using induction heating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6439—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" with indicators, stains, dyes, tags, labels, marks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/13—Moving of cuvettes or solid samples to or from the investigating station
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/02—Mechanical
- G01N2201/023—Controlling conditions in casing
- G01N2201/0231—Thermostating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
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- G01N2201/061—Sources
- G01N2201/06113—Coherent sources; lasers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/064—Stray light conditioning
Definitions
- the present invention relates to a detection device that detects a substance to be detected using surface plasmon resonance, a detection method using the detection device, and a detection chip used in the detection device.
- SPFS Surface Plasmon-field enhanced Fluorescence Spectroscopy
- Patent Documents 1 and 2 disclose an analysis apparatus and an analysis method using the SPFS method.
- a sensor chip having a prism made of a dielectric, a metal film formed on one surface of the prism, and a capturing body (for example, an antibody) fixed on the metal film is used.
- the substance to be detected is captured by the capturing body (primary reaction).
- the captured substance to be detected is further labeled with a fluorescent substance (secondary reaction).
- secondary reaction a fluorescent substance
- This localized field light selectively excites the fluorescent substance that labels the substance to be detected captured on the metal film, and the fluorescence emitted from the fluorescent substance is observed.
- fluorescence is detected to detect the presence or amount of a substance to be detected.
- the analysis method using this analyzer is performed at room temperature.
- the primary reaction and the secondary reaction vary depending on the ambient temperature.
- the primary and secondary reactions are most accelerated at around 37 ° C. above room temperature.
- the intensity of the fluorescence emitted from the fluorescent material also changes depending on the ambient temperature of the fluorescent material.
- the temperature of the reaction field is not controlled, so the temperature of the reaction field at the time of primary reaction, secondary reaction, and fluorescence detection is It depends on the installation environment. Therefore, in the analyzers and analysis methods disclosed in Patent Documents 1 and 2, the ratio of the target substance to be captured by the capturing body in the primary reaction or the target substance in the secondary reaction is fluorescently labeled according to the ambient temperature. Ratio, the fluorescence intensity at the time of fluorescence detection may change. Therefore, the analysis apparatus and the analysis method described in Patent Literatures 1 and 2 may not be able to detect the detection target substance contained in the sample with high sensitivity and quantitative.
- a detection apparatus is a detection apparatus for detecting the presence or amount of a target substance contained in a specimen using surface plasmon resonance.
- a prism having an incident surface and a film formation surface; a metal film disposed on the film formation surface; a capture body disposed on the metal film; and a surface on which the capture body of the metal film is disposed.
- a holder for holding a detection chip which is disposed on the same surface and forms a liquid storage portion that stores the liquid together with the metal film, and excitation light irradiation that irradiates excitation light toward the incident surface
- a heating unit that heats at least one of the base, the prism, and the metal film in a contact state or a non-contact state, and the heating unit is incident from the excitation light irradiation unit Excitation light to the surface They are arranged to avoid the optical path.
- a detection method is a detection method for detecting the presence or amount of a detection target substance contained in a specimen using surface plasmon resonance.
- a prism having an incident surface and a film formation surface, a metal film disposed on the film formation surface, a capture body fixed on the metal film, and the capture body of the metal film are disposed.
- a step of preparing a detection chip including a detection unit having a base for forming a liquid storage unit for storing the specimen together with the metal film, the base of the detection chip; A step of heating at least one of the prism and the metal film, a step of bringing the specimen into contact with the capture body, and binding a substance to be detected and the capture body contained in the specimen; and the prism; The gold So as to totally reflect at the interface between the film, and a step of irradiating the excitation light to the metal film from the prism side.
- a detection chip is a detection device for detecting the presence or amount of a target substance contained in a specimen using surface plasmon resonance.
- a detection chip used a prism having an incident surface and a film formation surface, a metal film disposed to extend outside the film formation surface, and a capturing body disposed on the metal film, And a base that is disposed on the same surface as the surface on which the capturing body of the metal film is disposed and forms a liquid storage portion that stores the liquid together with the metal film.
- the substance to be detected can be detected with high sensitivity and quantitatively.
- FIG. 1 is a schematic diagram of an SPFS apparatus according to the first embodiment.
- 2A and 2B are diagrams illustrating the configuration of the detection chip according to Embodiment 1.
- FIG. FIG. 3 is a flowchart showing an operation procedure of the SPFS apparatus according to the first embodiment.
- 4A to 4C are diagrams showing the positional relationship between the detection chip according to Embodiment 1 and the heat block of the modification.
- 5A to 5C are diagrams showing the positional relationship between the detection chip according to the first modification of the first embodiment and each heat block.
- FIG. 6 is a diagram illustrating a configuration of a detection chip according to the second modification of the first embodiment.
- FIG. 7 is a schematic diagram of an SPFS apparatus according to the second embodiment.
- FIG. 8 is a cross-sectional view in the long side direction of the detection chip according to the second embodiment.
- FIG. 9 is a flowchart showing an operation procedure of the SPFS apparatus according to the second embodiment.
- FIG. 10 is a cross-sectional view in the long side direction of a detection chip according to a modification of the second embodiment.
- the SPFS device makes excitation light incident on a metal film on a prism made of a dielectric at an angle at which surface plasmon resonance occurs, thereby causing localized field light (generally “evanescent light” or “near field” on the surface of the metal film. Also called “light”).
- the SPFS device detects the amount of fluorescent light emitted from the fluorescent material by selectively exciting the fluorescent material that labels the detected material disposed on the metal film by the localized field light, thereby detecting the detected material. Detect the presence or amount of.
- FIG. 1 is a schematic diagram showing the configuration of the SPFS apparatus 100 according to the first embodiment.
- the SPFS device 100 includes an excitation light irradiation unit 110, a light detection unit 120, a heating unit 130, and a control unit 140.
- the SPFS device 100 is used in a state where the detection chip 150 is mounted on the holder 150a for detection of the substance to be detected. Therefore, the detection chip 150 will be described first, and then each component of the SPFS device 100 will be described.
- FIG. 2 is a diagram illustrating the configuration of the detection chip 150.
- 2A is a perspective view of the detection chip 150
- FIG. 2B is a cross-sectional view of the detection chip 150 in the long side direction.
- a heat block 131 to be described later is indicated by a broken line.
- the detection chip 150 includes a prism 151, a metal film 152, a reaction unit 153, and a base 154.
- the detection chip 150 is replaced for each detection.
- the size of the detection chip 150 is not particularly limited, and the length of each side is preferably about several mm to several cm.
- the prism 151 is made of a dielectric that is transparent to the excitation light ⁇ .
- the prism 151 has an incident surface 161, a film formation surface (reflection surface) 162, an exit surface 163, and a lower surface 164.
- the incident surface 161 causes the excitation light ⁇ emitted from the excitation light irradiation unit 110 to enter the prism 151.
- the film formation surface 162 reflects the excitation light ⁇ incident on the prism 151.
- the excitation light ⁇ reflected by the film formation surface 162 becomes reflected light ⁇ .
- a metal film 152 is disposed on the film formation surface 162.
- the emission surface 163 emits the reflected light ⁇ to the outside of the prism 151.
- the lower surface 164 is disposed to face the film formation surface 162.
- the shape of the prism 151 is not particularly limited.
- the shape of the prism 151 is a column having a trapezoidal bottom surface.
- the surface corresponding to one base of the trapezoid is the film formation surface 162
- the surface corresponding to the other base of the trapezoid is the lower surface 164
- the surface corresponding to one leg is the incident surface 161
- the other The surface corresponding to the leg is the exit surface 163.
- Examples of the material of the prism 151 include resin and glass.
- the material of the prism 151 is preferably a resin having a refractive index in the range of 1.4 to 1.6 and low birefringence.
- the metal film 152 is disposed on the film formation surface 162 of the prism 151.
- an interaction (surface plasmon resonance) occurs between the photon of the excitation light ⁇ incident on the film formation surface 162 under the total reflection condition and the free electrons in the metal film 152, and is locally on the surface of the metal film 152. In-situ light can be generated.
- the material of the metal film 152 is not particularly limited as long as it is a metal that can cause surface plasmon resonance.
- Examples of the material of the metal film 152 include gold, silver, copper, aluminum, and alloys thereof.
- the metal film 152 is a gold thin film.
- a method for forming the metal film 152 is not particularly limited. Examples of the method for forming the metal film 152 include sputtering, vapor deposition, and plating.
- the thickness of the metal film 152 is not particularly limited, but is preferably in the range of 30 to 70 nm.
- the reaction unit 153 is disposed on the surface (front surface) where the prism 151 is not disposed, of the two surfaces (front surface and back surface) of the metal film 152.
- the reaction unit 153 includes a primary antibody (capturing body) for capturing the target substance and captures the target substance.
- the substance to be detected captured by the primary antibody is fluorescently labeled with a secondary antibody labeled with a fluorescent substance.
- the reaction unit 153 excites the fluorescent material by the localized field light generated by irradiating the metal film 152 with the excitation light ⁇ , and emits the fluorescent ⁇ .
- the base 154 is disposed on the surface (surface) of the metal film 152 where the prism 151 is not disposed.
- the base 154 has an upper surface 166, a side surface 167, and a lower surface 168.
- the substrate 154 is a substantially plate-like transparent member that is disposed so as to cover the reaction portion 153 and is formed larger than the film formation surface 162 of the prism 151.
- a channel groove 171 is formed on the surface (lower surface 168) of the base 154 facing the metal film 152.
- the base 154 is bonded to the metal film 152 or the prism 151 by, for example, bonding with an adhesive, laser welding, ultrasonic welding, or pressure bonding using a clamp member.
- the base 154 is bonded to the metal film 152 to form a flow path 172 having the liquid storage portion 173 together with the metal film 152.
- the base 154 includes a first through hole 174 formed at one end of the flow channel 171 and a second through hole 175 formed at the other end of the flow channel 171 in addition to the flow channel 171.
- Each of the first through hole 174 and the second through hole 175 has a cylindrical shape.
- the channel groove 171 becomes a channel 172 when the opening is closed by the metal film 152. Further, the first through hole 174 and the second through hole 175 become an inlet 176 and an outlet 177 to the channel 172, respectively, by closing the opening of the channel 172 with the metal film 152.
- a liquid feeding part (not shown) can be connected to the injection port 176.
- Specimen type is not particularly limited.
- specimens include blood, serum, plasma, urine, nasal fluid, saliva, stool, body cavity fluid (spinal fluid, ascites, pleural effusion), and diluted solutions thereof.
- substances to be detected contained in a sample include nucleic acids (single-stranded or double-stranded DNA, RNA, polynucleotides, oligonucleotides, PNA (peptide nucleic acids), nucleosides, nucleotides, or modified molecules thereof), Examples include proteins (polypeptides or oligopeptides), amino acids (including modified amino acids), carbohydrates (oligosaccharides, polysaccharides, or sugar chains), lipids, or modified molecules and complexes thereof.
- the substance to be detected is a carcinoembryonic antigen such as AFP ( ⁇ -fetoprotein), a tumor marker, a signal transmitter, a hormone, and the like.
- the material of the substrate 154 is required to have good moldability (transferability, releasability), high transparency, low autofluorescence with respect to ultraviolet rays and visible light, and high thermal conductivity. .
- the material of the base 154 is preferably a transparent resin.
- the resin used as the material of the substrate 154 include polycarbonate, polymethyl methacrylate, polystyrene, polyacrylonitrile, polyvinyl chloride, polyethylene terephthalate, nylon 6, nylon 66, polyvinyl acetate, polyvinylidene chloride, polypropylene, poly Isoprene, polyethylene, polydimethylsiloxane and cyclic polyolefin are included. From the viewpoint of high refractive index, polycarbonate is preferred.
- the method for manufacturing the substrate 154 is not particularly limited, but injection molding using a mold is preferable from the viewpoint of manufacturing cost.
- the excitation light ⁇ enters the prism 151 from the incident surface 161.
- the excitation light ⁇ incident on the prism 151 is incident on the metal film 152 at a total reflection angle (an angle at which surface plasmon resonance occurs).
- a total reflection angle an angle at which surface plasmon resonance occurs.
- This localized field light excites a fluorescent substance that labels the substance to be detected present on the metal film 152, and emits fluorescence ⁇ .
- the SPFS device 100 detects the presence or amount of the substance to be detected by detecting the amount of fluorescent ⁇ emitted from the fluorescent substance.
- the SPFS device 100 includes the excitation light irradiation unit 110, the light detection unit 120, the heating unit 130, and the control unit 140. Although not particularly illustrated, the SPFS device 100 may be covered with a transparent casing.
- the excitation light irradiation unit 110 irradiates the excitation light ⁇ toward the metal film 152 of the detection chip 150.
- the excitation light ⁇ is totally reflected by the metal film 152 and becomes reflected light ⁇ .
- the excitation light irradiation unit 110 has a light source.
- the light source is rotatable about a predetermined point in the detection chip 150, and the incident angle of the excitation light ⁇ with respect to the metal film 152 can be changed.
- the type of light source is not particularly limited. Examples of light sources include gas lasers, solid state lasers, and semiconductor lasers.
- the excitation light ⁇ is a gas laser light or solid laser light having a wavelength of 200 to 1000 nm, or a semiconductor laser light having a wavelength of 385 to 800 nm.
- the light detection unit 120 detects fluorescence ⁇ emitted from the metal film 152.
- the light detection unit 120 is disposed so as to face a surface of the metal film 152 of the detection chip 150 held by the holder 150a that does not face the prism 151.
- the light detection unit 120 includes a first lens 121, a filter 122, a second lens 123, and a light sensor 124.
- the first lens 121 and the second lens 123 constitute a conjugate optical system that is not easily affected by stray light.
- the light traveling between the first lens 121 and the second lens 123 becomes substantially parallel light.
- the first lens 121 and the second lens 123 image the fluorescence ⁇ emitted from the metal film 152 on the light receiving surface of the optical sensor 124.
- the filter 122 is disposed between the first lens 121 and the second lens 123.
- the filter 122 contributes to improvement in the accuracy and sensitivity of fluorescence detection by the optical sensor 124.
- the filter 122 is, for example, an optical filter or a cut filter.
- the optical filter include a neutral density (ND) filter and a diaphragm lens.
- the cut filter includes external light (illumination light outside the apparatus), excitation light ⁇ transmission component, stray light (excitation light ⁇ scattering component), plasmon scattered light (excitation light ⁇ originated from the surface of the detection chip 150, etc. Noise components such as auto-fluorescence of each member).
- Examples of the cut filter include an interference filter and a color filter.
- the optical sensor 124 detects the fluorescence ⁇ emitted from the detection chip 150 and transmitted through the filter 122.
- the optical sensor 124 is, for example, an ultrasensitive photomultiplier tube or a CCD image sensor capable of multipoint measurement.
- the heating unit 130 indirectly heats the liquid in the reaction field stored in the liquid storage unit 173 via the base 154.
- the heating unit 130 includes a heat block 131 and a heat source 132.
- the heat block 131 heats the liquid in the reaction field in contact with the substrate 154 or in a non-contact state to a temperature at the time of analysis described later.
- the heat block 131 has a rectangular parallelepiped shape, and is in contact with the base 154 at least during heating. More specifically, the heat block 131 is in contact with the lower surface 168 of the base 154 while avoiding the prism 151, and is disposed at both ends in the width direction of the flow path 172 (see FIG. 2A). Further, the heat block 131 is arranged avoiding the optical path of the excitation light ⁇ emitted from the excitation light irradiation unit 110.
- the SPFS device 100 may monitor the temperature of the liquid in the reaction field using a temperature sensor.
- the material of the heat block 131 is not particularly limited as long as the base 154 can be heated, but is preferably a metal having good thermal conductivity.
- the material of the heat block 131 is copper, aluminum, or the like.
- the number and size of the heat blocks 131 are not particularly limited, and may be appropriately set depending on the amount of liquid in the reaction field to be heated.
- the heat block 131 does not hinder the function of the SPFS device 100. Further, as compared with the case where the other surface of the base 154 is also heated (see FIG. 4A), the design considering usability (such as avoiding burns and attaching / detaching the detection chip 150) can be easily performed. Moreover, since the heat block 131 is not close to the reaction field, detection errors due to temperature changes are less likely to occur. Further, since the heat block 131 and the prism 151 are not brought into contact with each other, the internal stress of the prism 151, and hence the occurrence of birefringence can be suppressed, and a good excitation light polarization state can be maintained.
- the heat source 132 is connected to the control unit 140 and heats the heat block 131. Similar to the heat block 131, the heat source 132 is also arranged avoiding the optical path of the excitation light ⁇ emitted from the excitation light irradiation unit 110. That is, the heating unit 130 is arranged so as to avoid the optical path of the excitation light ⁇ emitted from the excitation light irradiation unit 110.
- the type of the heat source 132 is not particularly limited, and includes an infrared heater such as a cartridge heater, a rubber heater, and a ceramic heater, a Peltier element, and the like.
- the temperature of the heat source 132 is not particularly limited as long as the liquid in the reaction field in the liquid reservoir 173 can be heated to a temperature of 34 to 40 ° C. (temperature at the time of analysis). In the present embodiment, the temperature of the heat source 132 is 40 to 50 ° C.
- the heat block 131 heated by the heat source 132 heats the base 154.
- the heat conducted from the position of contact with the heat block 131 (the lower surface 168 of the base 154) is conducted to the entire base 154.
- the heat transmitted to the base 154 is conducted to the liquid in the liquid storage part 173 of the flow path 172.
- the liquid of the reaction field in the liquid storage part 173 is heated by the heating part 130 to the temperature at the time of analysis.
- the control unit 140 comprehensively controls the excitation light irradiation unit 110, the light detection unit 120, and the heating unit 130.
- the control unit 140 includes, for example, a known computer or microcomputer including an arithmetic device, a control device, a storage device, an input device, and an output device.
- FIG. 3 is a flowchart illustrating an example of an operation procedure of the SPFS apparatus 100.
- the detection chip 150 is installed in the holder 150a of the SPFS device 100 (S100). At this time, the detection chip 150 is installed such that the heat block 131 of the heating unit 130 contacts the lower surface 168.
- the controller 140 operates the heat source 132 to heat the heat block 131 (S110).
- the liquid of the reaction field in the liquid storage part 173 is heated to the temperature at the time of analysis.
- the temperature of the liquid in the reaction field at the time of analysis is 37 ° C., which is also the optimum temperature for the primary reaction and the secondary reaction.
- a sample that may contain a substance to be detected is sent to the flow path 172 (S120).
- the pump is driven to cause the sample to flow in the flow channel 172.
- the specimen sent to the flow path 172 (liquid reservoir 173) is heated to the temperature at the time of analysis immediately after the liquid is sent. Is done.
- the to-be-detected substance contained in the specimen is surely captured by the capturing body (primary antibody).
- the specimen in the channel 172 is removed, and the inside of the channel 172 is washed with a cleaning liquid.
- a reagent containing a secondary antibody labeled with a fluorescent substance is sent to the channel 172 by a pump (S130). Also in this case, the reagent sent to the flow path 172 is heated to the temperature at the time of analysis immediately after feeding.
- the secondary antibody labeled with the fluorescent substance contained in the reagent surely binds to the substance to be detected.
- the sample and the reagent may be mixed in advance, and the liquid may be sent to the flow path in a state where the target substance and the secondary antibody are bound in advance. Thereby, the substance to be detected is labeled with the fluorescent substance. Thereafter, the reagent (labeling liquid) in the flow path 172 is removed, and the flow path 172 is cleaned with a cleaning liquid.
- the excitation light ⁇ is irradiated from the light source to the detection chip 150 so that the excitation light ⁇ is incident on the metal film 152 at a specific incident angle (see FIG. 1) (S140). Then, the local field light efficiently excites a fluorescent substance that labels the substance to be detected captured on the reaction unit 153, and emits fluorescence ⁇ .
- the presence or amount of the analyte to be detected in the specimen can be detected.
- the SPFS device according to the modification of the first embodiment is different from the SPFS device 100 according to the first embodiment in the configuration of the heat block. Therefore, a description will be given mainly of differences from the SPFS apparatus 100 according to the first embodiment.
- FIG. 4 is a diagram showing a positional relationship between the detection chip 150 and the heat block of the modified example.
- 4A is a diagram illustrating a positional relationship between the detection chip 150 and the heat block 131a of the first modification
- FIG. 4B is a diagram illustrating a positional relationship between the detection chip 150 and the heat block 131b of the second modification
- FIG. 4C is a diagram illustrating a positional relationship between the detection chip 150 and the heat block 131c of the third modification.
- the heat block 131a may be configured to heat the base 154 from the upper surface 166, the side surface 167, and the lower surface 168.
- the heat block 131a is divided into a lower heat block piece 131a ′ and an upper heat block piece 131a ′′.
- the lower heat block piece 131a ′ heats the base 154 from the lower surface 168 and the side surface 167.
- the heat block piece 131 a ′′ heats the base body 154 from the upper surface 166.
- the lower heat block 131a ′ and the upper heat block 131a ′′ are heated while sandwiching and pressing the base 154.
- the detection chip 150 is more effective than the heat block 131 according to the first embodiment.
- the heat block 131 may be configured to press and heat the base 154 only from the side surface 167, or press the base 154 only from the upper surface 166. When the base 154 is heated only from the upper surface 166, the heat block 131 is disposed so as to avoid the fluorescent light path.
- the heat block 131b may be heated from the lower side of the detection chip 150.
- the heat block 131b is formed with a recess 133 that contacts the lower surface 168 of the base 154, the lower surface 164 of the prism 151, the incident surface 161 of the prism 151, and the output surface 163 of the prism 151.
- the heat block 131b includes a first heat block 131b ′ on the outlet 177 side and a second heat block 131b ′′ on the inlet 176 side.
- the first heat block 131b ′ and the second heat block 131b ′′ are These are formed in the same shape and are arranged so as to avoid the optical path of the excitation light ⁇ from the excitation light irradiation unit 110 to the incident surface 161.
- the heat block 131 c may be configured to heat the lower surface 164 of the prism 151.
- a design considering usability as compared with the heat block 131a shown in FIG. 4A, a design considering usability (avoidance of burns, attachment / detachment of the detection chip 150, etc.) can be easily performed. Thereby, the detection chip 150 can be effectively heated as compared with the heat block 131 according to the first embodiment.
- the temperature difference at each point in the prism 151 is small, it is easy to avoid deformation of the prism 151 due to thermal stress, and it is easy to avoid changes in optical characteristics.
- the detection chips 150 ′ and 150 ′′ according to the modification used in the SPFS apparatus 100 of the first embodiment are different from the detection chip 150 according to the first embodiment in the size of the metal film 152 ′. A difference from the detection chip 150 according to the first embodiment will be described.
- FIG. 5A is a diagram showing a positional relationship between the detection chip 150 ′ of Modification 1 and the heat block 131
- FIG. 5B shows the detection chip 150 ′ of Modification 1 and the heat block 131a of Modification 1.
- FIG. 5C is a diagram illustrating the positional relationship between the detection chip 150 ′ of the first modification and the heat block 131b of the second modification.
- FIG. 6 is a diagram illustrating a positional relationship between the detection chip 150 ′′ according to the second modification of the first embodiment and the heat block 131a according to the first modification.
- the metal film 152 ′ of the detection chip 150 ′ of Modification 1 is disposed so as to extend outside the film formation surface 162.
- the base 154 is disposed so as to cover the metal film 152 '.
- the outer diameter of the lower surface 168 of the base 154 and the outer diameter of the metal film 152 ' are the same.
- the heating unit 130 heats the metal film 152 '.
- the metal film 152 ′ is directly heated from the prism 151 side (lower side) by the heat block 131 of the heating unit 130. Thereby, the heating time of the liquid of the reaction field in the liquid storage part 173 can be shortened.
- the heating unit 130 may form a through hole in the base 154 to heat the metal film 152 ′ from above.
- the outer diameter of the metal film 152 ′ may be smaller than the outer diameter of the lower surface 168 of the base body 154.
- the lower heat block piece 131a ′ includes the metal film 152 ′ and the side surface 167.
- the substrate 154 is heated.
- the upper heat block piece 131 a ′′ heats the base body 154 from the upper surface 166.
- the heat block 131b includes the metal film 152 ′, the lower surface 164 of the prism 151, Heating is performed from the entrance surface 161 of the prism 151 and the exit surface 163 of the prism 151.
- the heat block 131b includes a first heat block 131b 'on the outlet 177 side and a second heat block 131b "on the inlet 176 side.
- a transparent conductive film (ITO) and a metal or carbon sealing seal 175a are disposed so as to cover at least the injection port 176.
- the material of the sealing seal 175a is preferably a material having high thermal conductivity, and preferably has a thermal conductivity of 230 W ⁇ 1 / m ⁇ 1 / K or more, which is preferable as a metal sealing seal.
- the metal is copper, gold, aluminum, etc.
- the sealing seal 175a is disposed on the entire upper surface 166 of the base 154.
- the detection chip 150 ′′ of the second modification is replaced with the detection chip 150 ′′ of the first modification.
- the lower heat block piece 131a ′ heats the base 154 from the metal film 152 ′ and the side surface 167. Further, the heating unit 130 (upper heat block piece 131a ′′) heats the base 154 by heating the sealing seal 175a.
- the inside of the liquid storage unit 173 is heated. It is possible to shorten the heating time of the liquid in the reaction field, and the sealing seal 175a may be disposed only in the vicinity of the injection port 176.
- the SPFS device 100 includes the reaction between the capturing body and the substance to be detected, the reaction between the substance to be detected and the fluorescent substance, and the ambient temperature of the fluorescent substance from which the fluorescence is emitted. Since each is adjusted to be constant, the substance to be detected can be detected with high accuracy and high sensitivity.
- each of the heat blocks 131, 131a, and 131b heats the base 154 while in contact.
- each of the heat blocks 131, 131a, and 131b heats the base 154 in a non-contact state. You may do it.
- the distance between the heat blocks 131, 131a, 131b and the base 154 is not particularly limited as long as the base 154 can be heated by heat from the heat blocks 131, 131a, 131b, but is preferably as short as possible.
- the heating unit 130 may heat the metal film 152 by induction heating (IH). In this case, instead of the heat blocks 131, 131a and 131b, IH coils are arranged.
- the SPFS apparatus 200 according to the second embodiment is different from the SPFS apparatus 100 according to the first embodiment in that it includes a reagent storage unit 250 and a second heating unit 230 that heats the reagent storage unit 250. Therefore, a description will be given mainly of differences from the SPFS apparatus 100 according to the first embodiment.
- FIG. 7 is a diagram illustrating a configuration of the SPFS apparatus 200 according to the second embodiment.
- the SPFS device 200 according to the second embodiment includes an excitation light irradiation unit 110, a light detection unit 120, a first heating unit 130 (a heating unit in the first embodiment), and a second heating unit 230. , A moving unit 280, a liquid feeding unit 290, and a control unit 240.
- the SPFS device 200 is used in a state in which the detection chip 350 is mounted on the holder 150a for detection of the substance to be detected. Therefore, the detection chip 350 will be described first, and then each component of the SPFS device 200 will be described.
- FIG. 8 is a cross-sectional view in the long side direction of the detection chip 350 according to the second embodiment.
- the hatching of the first base 354 and the second base 254 is omitted.
- the detection chip 350 according to the second embodiment includes a reagent storage unit 250 in addition to the components of the detection chip 150 according to the first embodiment.
- a detection well 273 is arranged on the detection chip 350.
- a reaction unit 153 is disposed at the bottom of the detection well 273.
- the reagent storage unit 250 includes a second substrate 254 and a plurality of wells 255.
- the second base 254 is a substantially plate-shaped transparent member.
- the second base 254 is formed integrally with the first base 354 (the base 154 of the first embodiment).
- the well 255 stores specimens and reagents used in the primary reaction and the secondary reaction described above.
- the well 255 is formed on the second base 254.
- the shape of the well 255 is not particularly limited. The shape of the well 255 can be appropriately set according to the amount of the specimen or reagent to be stored.
- the second heating unit 230 indirectly heats the liquid stored in the reagent storage unit 250 via the second base 254.
- the second heating unit 230 includes a second heat block 231 and a second heat source 232.
- the second heat block 231 heats the liquid to a predetermined temperature in a contact state or non-contact state with the second base 254.
- the second heat block 231 is in contact with the second base 254 at least during heating. More specifically, the second heat block 231 is disposed below the well 255.
- the 2nd heat source 232 can use the same thing as the 1st heat source 132 (heat source in Embodiment 1).
- the relationship between the temperature of the liquid in the detection well 273 and the temperature of the liquid in the well 255 is not particularly limited.
- the temperature of the liquid in the detection well 273 and the temperature of the liquid in the well 255 may both be 34 to 40 ° C.
- the temperature of the liquid in the detection well 273 may be 34 to 40 ° C.
- the temperature of the liquid in the well 255 may be 20 to 30 ° C.
- the temperature of the second heat source 232 is 20 to 35 ° C.
- the temperature in the casing can be stabilized.
- the moving unit 280 includes a stage 281 and a moving mechanism 282 that moves the stage 281.
- the stage 281 is formed in a flat plate shape, for example.
- first heat block 131 heat block in the first embodiment
- second heat block 231 of second heating unit 230 are arranged on stage 281.
- the detection chip 350 is disposed on the stage 281 on which the first heat block 131 and the second heat block 231 are disposed.
- the moving unit 280 moves the detection chip 350 to a measurement position (a position where the excitation light ⁇ is irradiated by the excitation light irradiation unit 110 and the generated fluorescence ⁇ is detected by the light detection unit 120) and a liquid feeding position (a liquid feeding unit 290). To move the specimen or reagent to a position where the specimen or reagent is fed.
- the liquid feeding unit 290 supplies the specimen or reagent stored in the reagent storage unit 250 to the detection well 273 of the detection chip 350.
- the liquid feeding unit 290 includes, for example, a pipette 291 and a pump 292. By driving the pump 292, the sample or reagent is aspirated and discharged quantitatively.
- the control unit 240 comprehensively controls the excitation light irradiation unit 110, the light detection unit 120, the first heating unit 130, the second heating unit 230, the moving unit 280, and the liquid feeding unit 290.
- FIG. 9 is a flowchart illustrating an example of an operation procedure of the SPFS apparatus 200.
- the detection chip 350 is installed in the holder 150a located at the installation position of the detection chip 150 in the SPFS device 200 (step S200). At this time, the detection chip 350 is placed in contact with the first heat block 131 of the first heating unit 130 and the second heat block 231 of the second heating unit 230.
- the controller 240 operates the power sources of the first heat source 132 and the second heat source 232 to heat the first heat block 131 and the second heat block 231 (step S210).
- the temperature in the reagent storage part 250 and the liquid storage part 173 is heated to the same temperature as the liquid in the reaction field.
- the temperature of the liquid in the reaction field is 37 ° C., which is also the optimum temperature for the primary reaction and the secondary reaction.
- control unit 240 operates the moving mechanism 282 to move the detection chip 350 to the liquid feeding position (step S220).
- the control unit 240 operates the liquid feeding unit 290 to introduce the sample in the reagent storage unit 250 into the detection well 273 of the detection chip 350 (step S230).
- the detection well 273 in order to cause the capturing body (primary antibody) fixed to the reaction unit 153 to capture the detection target substance (antigen-antibody reaction) reliably, the pump 292 is driven and the specimen is detected in the detection well 273. Stir in.
- the reaction proceeds promptly without lowering the temperature of the liquid. And the to-be-detected substance contained in the specimen is surely captured by the capturing body (primary antibody).
- the specimen in the detection well 273 is removed, and the detection well 273 is cleaned with a cleaning liquid.
- control unit 240 operates the liquid feeding unit 290 to introduce a reagent (labeled solution) containing a secondary antibody labeled with a fluorescent substance into the detection well 273 of the detection chip 350 (step S240).
- the reagent sent to the detection well 273 is heated in advance to the temperature at the time of analysis in which the secondary antibody reacts with the substance to be detected, so that the temperature does not drop.
- the secondary antibody labeled with the fluorescent substance contained in the reagent surely binds to the substance to be detected. Thereby, the substance to be detected is labeled with the fluorescent substance.
- the labeling liquid in the detection well 273 is removed, and the inside of the flow path is washed with a washing liquid.
- control unit 240 operates the moving mechanism 282 to move the detection chip 350 from the liquid feeding position to the measurement position (step S250). Then, the excitation light ⁇ is irradiated from the light source to the detection chip 350 so that the excitation light ⁇ is incident on the metal film 152 at a specific incident angle (step S260).
- the presence or amount of the analyte to be detected in the specimen can be detected.
- the SPFS device 200 according to the second embodiment further heats the reagent storage unit 250, so that the substance to be detected is more accurately compared with the SPFS device 100 according to the first embodiment. And it can detect with high sensitivity.
- the block 231 may heat the base 154 and the second base 254 in a non-contact manner.
- the distance between the first heat block 131 and the base 154 and the distance between the second heat block 231 and the second base 254 are determined by the heat from the first heat block 131 and the second heat block 231 and the second heat block 131 and the second base 254.
- substrate 254 can be heated, It is preferable that it is as short as possible.
- the reagent storage unit 250 is heated by the second heating unit 230, but may not be heated. That is, in the second embodiment, only the detection well 273 may be heated. In this case, since the proportion of the detection well 273 in the detection chip 350 is small, the temperature of the reagent injected into the detection well 273 is increased immediately after the injection. Further, as compared with the second embodiment in which the detection well 273 and the reagent storage unit 250 are heated, the second heating unit 230 is unnecessary, so that the design can be easily performed. In addition, the temperature of the detection well 273 can be raised quickly as compared with the detection chip 350 according to the second embodiment.
- the first heat block 131 and the second heat block 231 are individually controlled by the first heat source 132 and the second heat source 232, but may be controlled by a single heating unit. Good. Thereby, control of the 1st heat block 131 and the 2nd heat block 231 can be simplified.
- FIG. 10 is a cross-sectional view in the long side direction of a detection chip 350 according to a modification of the second embodiment.
- the metal film 152 of the detection chip 350 according to the modification of the second embodiment is disposed so as to extend outside the film formation surface 162.
- the heat block 131 of the heating unit 130 can directly heat the metal film 152, the heating time of the liquid in the reaction field in the liquid storage unit 173 can be shortened.
- IH induction heating
- the detection device according to the present invention is not limited to the SPFS device.
- the detection device according to the present invention may be an SPR device.
- the SPR device includes a light detection unit that detects excitation light reflected from the metal thin film and emitted from the emission surface.
- the detection device, the detection method, and the detection chip used in these using the surface plasmon resonance according to the present invention can measure a substance to be detected with high reliability, and thus are useful for clinical examinations, for example.
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Abstract
Description
実施の形態1では、本発明に係る検出装置であるSPFS装置の一実施の形態について説明する。
実施の形態1の変形例に係るSPFS装置は、ヒートブロックの構成が実施の形態1に係るSPFS装置100と異なる。そこで、主として実施の形態1に係るSPFS装置100と異なる部分について説明する。
実施の形態1のSPFS装置100に使用される変形例に係る検出チップ150’、150”は、金属膜152’の大きさなどが実施の形態1に係る検出チップ150と異なる。そこで、主として実施の形態1に係る検出チップ150と異なる部分について説明する。
実施の形態2に係るSPFS装置200は、試薬保管部250を有する点、試薬保管部250を加熱する第2加熱部230を有する点などにおいて、実施の形態1に係るSPFS装置100と異なる。そこで、主として実施の形態1に係るSPFS装置100と異なる部分について説明する。
図10は、実施の形態2の変形例の検出チップ350の長辺方向の断面図である。図10に示されるように、実施の形態2の変形例の検出チップ350の金属膜152は、成膜面162の外側に延在するように配置されている。この場合、加熱部130のヒートブロック131が金属膜152を直接加熱することができるため、液体貯留部173内の反応場の液体の加熱時間を短縮することができる。
110 励起光照射部
120 光検出部
121 第1レンズ
122 フィルター
123 第2レンズ
124 光センサー
130 加熱部(第1加熱部)
131 ヒートブロック(第1ヒートブロック)
132 熱源(第1熱源)
133 凹部
140,240 制御部
150,350 検出チップ(検出部)
150a ホルダー
151 プリズム
152 金属膜
153 反応部
154,354 基体(第1基体)
161 プリズムの入射面
162 プリズムの成膜面
163 プリズムの出射面
164 プリズムの下面
166 基体の上面
167 基体の側面
168 基体の下面
171 流路溝
172 流路
173 液体貯留部
174 第1貫通孔
175 第2貫通孔
175a 封止シール
176 注入口
177 取出口
230 第2加熱部
231 第2ヒートブロック
232 第2熱源
250 試薬保管部
254 第2基体
255 ウェル
273 検出用ウェル
280 移動部
281 ステージ
282 移動機構
290 送液部
291 ピペット
292 ポンプ
Claims (23)
- 表面プラズモン共鳴を利用して、検体に含まれる被検出物質の存在またはその量を検出するための検出装置であって、
入射面および成膜面を有するプリズムと、前記成膜面上に配置された金属膜と、前記金属膜上に配置された捕捉体と、前記金属膜の前記捕捉体が配置された面と同じ面上に配置され、前記金属膜と共に液体を貯留する液体貯留部を形成する基体と、を有する検出チップを保持するためのホルダーと、
前記入射面に向かって励起光を照射する励起光照射部と、
接触状態または非接触状態で、前記基体、前記プリズムおよび前記金属膜のうち、少なくともいずれかを加熱する加熱部と、を有し、
前記加熱部は、前記励起光照射部から前記入射面までの励起光の光路を避けて配置されている、
検出装置。 - 前記加熱部は、前記基体の上面、側面および下面のうち、少なくともいずれかを加熱する、請求項1に記載の検出装置。
- 前記加熱部は、前記成膜面に対向する前記プリズムの下面を加熱する、請求項1に記載の検出装置。
- 前記加熱部は、前記基体の下面、前記プリズムの入射面、前記成膜面に対向する前記プリズムの下面、および前記プリズムの前記成膜面で反射した励起光を出射させる出射面を加熱する、請求項1に記載の検出装置。
- 前記検出チップは、前記液体貯留部に供給される検体または試薬を保管するための試薬保管部をさらに有し、
前記加熱部は、接触状態または非接触状態で、前記試薬保管部をさらに加熱する、請求項1に記載の検出装置。 - 前記検出チップは、前記液体貯留部に供給される検体または試薬を保管するための試薬保管部をさらに有し、
前記加熱部は、前記試薬保管部を加熱しない、
請求項1に記載の検出装置。 - 前記加熱部は、誘導加熱によって前記金属膜を加熱する、請求項1に記載の検出装置。
- 前記金属膜の前記プリズムと対向しない面の近傍から出射される光を検出する光検出部をさらに有する、請求項1に記載の検出装置。
- 前記プリズムの前記成膜面で反射した励起光を検出する光検出部をさらに有する、請求項1に記載の検出装置。
- 前記金属膜は、前記成膜面の外側に延在するように配置されており、
前記加熱部は、前記金属膜を加熱する、
請求項1に記載の検出装置。 - 前記基体は、前記液体貯留部に前記検体を注入するための注入口を有し、
前記注入口は、金属製またはカーボン製の封止シールで封止されており、
前記加熱部は、前記封止シールを加熱することで前記基体を加熱する、
請求項1に記載の検出装置。 - 表面プラズモン共鳴を利用して、検体に含まれる被検出物質の存在またはその量を検出するための検出方法であって、
入射面および成膜面を有するプリズムと、前記成膜面上に配置された金属膜と、前記金属膜上に固定された捕捉体と、前記金属膜の前記捕捉体が配置された面と同じ面上に配置された、前記金属膜と共に前記検体を貯留する液体貯留部を形成する基体と、を有する検出部を含む検出チップを準備する工程と、
前記検出チップの前記基体、前記プリズムおよび前記金属膜のうち、少なくともいずれかを加熱する工程と、
前記検体を前記捕捉体に接触させて、前記検体に含まれる被検出物質と前記捕捉体とを結合させる工程と、
前記プリズムと前記金属膜との界面において全反射するように、前記プリズム側から前記金属膜に励起光を照射する工程と、
を有する、検出方法。 - 前記加熱する工程では、34~40℃に加熱する、請求項12に記載の検出方法。
- 前記加熱する工程では、前記基体の上面、側面および下面のうち、少なくともいずれかを加熱する、請求項12に記載の検出方法。
- 前記加熱する工程では、前記成膜面に対向する前記プリズムの下面を加熱する、請求項12に記載の検出方法。
- 前記加熱する工程では、前記基体の下面、前記プリズムの入射面、前記成膜面に対向する前記プリズムの下面、および前記成膜面で反射した励起光を出射させる出射面を加熱する、請求項12に記載の検出方法。
- 前記検出チップは、前記液体貯留部に供給される検体または試料を保管するための試薬保管部をさらに有し、
前記加熱する工程では、接触状態または非接触状態で、前記試薬保管部をさらに加熱する、
請求項12に記載の検出方法。 - 前記検出チップは、前記液体貯留部に供給される検体または試料を保管するための試薬保管部をさらに有し、
前記加熱する工程では、前記検出部を34~40℃に加熱するとともに、前記試薬保管部を前記検出部の温度未満の温度に、接触状態または非接触状態で加熱する、
請求項12に記載の検出方法。 - 前記検出チップは、前記液体貯留部に供給される検体または試料を保管するための試薬保管部をさらに有し、
前記加熱する工程では、前記試薬保管部を加熱しない、
請求項12に記載の検出方法。 - 前記加熱部は、誘導加熱によって前記金属膜を加熱する、請求項12に記載の検出方法。
- 前記金属膜の前記プリズムと対向しない面の近傍から出射される光を検出する工程をさらに有する、請求項12に記載の検出方法。
- 前記プリズムの前記成膜面で反射した励起光を検出する工程をさらに有する、請求項12に記載の検出方法。
- 表面プラズモン共鳴を利用して、検体に含まれる被検出物質の存在またはその量を検出するための検出装置に用いられる検出チップであって、
入射面および成膜面を有するプリズムと、
前記成膜面の外側に延在するように配置された金属膜と、
前記金属膜上に配置された捕捉体と、
前記金属膜の前記捕捉体が配置された面と同じ面上に配置され、前記金属膜と共に液体を貯留する液体貯留部を形成する基体と、を有する、
検出チップ。
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| EP14856943.7A EP3064928B1 (en) | 2013-10-31 | 2014-10-31 | Detection device, detection method using said detection device |
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| US20180364167A1 (en) * | 2015-11-13 | 2018-12-20 | Konica Minolta, Inc. | Detection device, detection method, and detection system |
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| US20160266111A1 (en) | 2016-09-15 |
| EP3064928B1 (en) | 2019-04-17 |
| JP6477488B2 (ja) | 2019-03-06 |
| EP3064928A1 (en) | 2016-09-07 |
| EP3064928A4 (en) | 2017-06-14 |
| JPWO2015064757A1 (ja) | 2017-03-09 |
| US11215613B2 (en) | 2022-01-04 |
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