WO2006106741A1 - 生体反応実行装置および生体反応実行方法、dnaチップ、情報処理装置および情報処理方法、プログラム、並びに、記録媒体 - Google Patents
生体反応実行装置および生体反応実行方法、dnaチップ、情報処理装置および情報処理方法、プログラム、並びに、記録媒体 Download PDFInfo
- Publication number
- WO2006106741A1 WO2006106741A1 PCT/JP2006/306486 JP2006306486W WO2006106741A1 WO 2006106741 A1 WO2006106741 A1 WO 2006106741A1 JP 2006306486 W JP2006306486 W JP 2006306486W WO 2006106741 A1 WO2006106741 A1 WO 2006106741A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- biological material
- biological
- flow path
- reaction
- unit
- Prior art date
Links
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44704—Details; Accessories
- G01N27/44713—Particularly adapted electric power supply
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/30—Micromixers
- B01F33/3032—Micromixers using magneto-hydrodynamic [MHD] phenomena to mix or move the fluids
-
- 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
- B01L3/502753—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 characterised by bulk separation arrangements on lab-on-a-chip devices, e.g. for filtration or centrifugation
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M1/00—Apparatus for enzymology or microbiology
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N37/00—Details not covered by any other group of this subclass
-
- 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
-
- 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
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0803—Disc shape
-
- 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
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
- B01L2300/0816—Cards, e.g. flat sample carriers usually with flow in two horizontal directions
-
- 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
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0415—Moving fluids with specific forces or mechanical means specific forces electrical forces, e.g. electrokinetic
- B01L2400/0421—Moving fluids with specific forces or mechanical means specific forces electrical forces, e.g. electrokinetic electrophoretic flow
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2565/00—Nucleic acid analysis characterised by mode or means of detection
- C12Q2565/60—Detection means characterised by use of a special device
- C12Q2565/628—Detection means characterised by use of a special device being a surface plasmon resonance spectrometer
Definitions
- the present invention relates to a biological reaction execution device and a biological reaction execution method, a DNA chip, an information processing device and an information processing method, a program, and a recording medium, and in particular, can improve the detection accuracy of a target gene.
- the present invention relates to a biological reaction execution device and a biological reaction execution method, a DNA chip, an information processing device and an information processing method, a program, and a recording medium.
- a DNA chip is a DNA chip in which a large number of DNA oligo chains are integrated and immobilized on a substrate surface as nucleic acids for detection. Comprehensive gene expression in collected cells by detecting hybridization between probes immobilized on spots on the substrate surface and targets in samples collected from cells using DNA chips It can be analyzed.
- Patent Documents 1 to 3 are prior art documents relating to a method for analyzing and correcting a gene expression level obtained with a DNA chip or the like.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-71688
- Patent Document 2 Japanese Translation of Special Publication 2002-267668
- Patent Document 3 JP 2003-28862 A
- the present invention has been made in view of such a situation, and is intended to improve the detection accuracy of a target gene.
- the biological reaction execution device of the present invention includes a first biological substance fixed in a reaction region provided in a flow path of a substrate on which at least one closed flow path is configured, and a first biological body
- a bioreaction execution device that bioreacts with a second biomaterial that reacts biologically with the substance, and electrophoreses the second biomaterial contained in the liquid dropped in the flow path of the mounted substrate.
- an electromagnetic induction generating unit that generates electromagnetic induction and generates an electric field in a predetermined direction along the flow path is provided.
- the flow path formed in the substrate may be circular.
- the second biological material includes a third biological material that specifically reacts with the first biological material, and a fourth biological material that reacts nonspecifically with the first biological material.
- the electromagnetic induction generating unit receives energy given for electrophoresis of the second biological material in the flow path by the electric field in a predetermined direction, and the first biological material and the third biological material. Electromagnetic induction should be generated so that energy can be dissociated from the biological reaction between the first biological substance and the fourth biological substance without dissociating the biological reaction. Can do.
- An AC supply unit that supplies an AC voltage to the electromagnetic induction generation unit may be further provided, and the amount of AC voltage supplied to the electromagnetic induction generation unit by the AC supply unit is The energy provided for the electrophoresis of the second biological material in the flow path by the electric field in the fixed direction does not dissociate the junction due to the biological reaction between the first biological material and the third biological material, and The amount of electric power required to generate electromagnetic induction should be the one that can dissociate the junction of the biological material of 1 and the 4th biological material due to the biological reaction. I'll do it.
- the electromagnetic induction generator is supplied with an alternating current, and depending on the polarity of the alternating current, a coiled conductive portion that alternately flows current in two directions and a magnetic field generated by the current flowing in the conductive portion
- An electric field canceling unit that cancels the generation of one electric field by permitting the current generated by only one of the two directions of the electric field generated to cancel the electric field and not allowing the other electric field. Can be provided.
- the flow path configured in the substrate can be circular, and the conductive portion and the electric field canceling portion can be provided above and below the circular flow path, respectively.
- the substrate may be provided with a plurality of concentric flow paths, and the conductive part and the electric field canceling part are provided on each of the circular flow paths above and below the flow path.
- the conducting part can be made to conduct an alternating current having a polarity opposite to that of the adjacent conducting part, and the electric field canceling part can be made to cancel the electric field in the same direction. .
- the biological reaction execution method of the present invention includes a first biological material fixed in a reaction region provided in a flow path through which a solution dropped on a substrate flows, and a biological material relative to the first biological material.
- a biological reaction execution method of a biological reaction execution device that performs a biological reaction with a second biological substance that reacts, and generates electromagnetic induction along a closed flow path configured by at least one substrate. By generating an electric field in a predetermined direction, the second biological material contained in the liquid dropped in the flow path of the substrate is electrophoresed.
- the substrate is provided with a flow path composed of a concave groove having a closed shape.
- a reaction region to which the first biological material is fixed is provided in the path, and the first biological material is contained in the solution dropped into the flow path and the second biological material to be detected and the biological body It is made to be able to react!
- the substrate is provided with a channel formed of a closed concave groove, and the channel reacts with the second biological material to be detected in the channel.
- a reaction area to which one biological substance is fixed is provided.
- the information processing apparatus of the present invention includes a first biological material fixed to a reaction region provided in a flow path of a substrate on which at least one closed flow path is configured, and a first biological material
- the bioreaction execution device that bioreacts with the second biomaterial that reacts with the bioreaction, the amount of energy provided for electrophoresis of the second biomaterial contained in the liquid dropped into the flow path is determined.
- An information processing apparatus that executes a process for determining, as a second biological material, a third biological material that specifically performs a biological reaction to the first biological material, and a first biological material
- the substrate containing the fourth biological material that reacts nonspecifically with the biological material is dropped into the flow path, and the third biological material and the fourth biological material in a state where different amounts of energy are applied.
- the information processing method of the present invention includes a first biological material fixed to a reaction region provided in a flow path of a substrate on which at least one closed flow path is configured, and a first biological material
- the bioreaction execution device that bioreacts with the second biomaterial that reacts with the bioreaction, the amount of energy provided for electrophoresis of the second biomaterial contained in the liquid dropped into the flow path is determined.
- An information processing method for an information processing apparatus that executes a process to determine, wherein a second biological material, a third biological material that specifically performs a biological reaction to the first biological material, and a first biological material Containing a fourth biological substance that reacts nonspecifically In the substrate dropped into the road, the second energy in a state where a different amount of energy is given.
- the acquisition step for acquiring the parameters corresponding to the biological reaction amounts of the third biological material and the fourth biological material, and a state in which different energy amounts are given based on the parameters acquired by the processing of the acquisition step.
- a calculation step for calculating a biological reaction amount of each of the third biological material and the fourth biological material, and the first biological material and the third biological material based on the biological reaction amount calculated by the processing of the calculation step.
- An energy determining step for determining an amount of energy that can dissociate the bonding between the first biological material and the fourth biological material without releasing the bonding due to the biological reaction with the biological material. It is characterized by this.
- the program of the present invention and the program recorded on the recording medium of the present invention are the first program fixed in the reaction region provided in the flow path of the substrate in which at least one closed flow path is configured.
- a biological reaction execution device that performs a biological reaction between a biological material and a second biological material that performs a biological reaction with respect to the first biological material, the electricity of the second biological material contained in the liquid dropped into the flow path
- the third substrate in a state where a different amount of energy is applied to a substrate in which a biological material and a fourth biological material that non-specifically reacts with the first biological material are dropped into the flow path.
- Biomaterials and the fourth life Based on the acquisition control step that controls the acquisition of parameters corresponding to each biological reaction amount of the substance and the parameters whose acquisition is controlled by the processing of the acquisition control step, a third energy condition is given in a state where a different amount of energy is given.
- the first biological material and the third biological material Based on the calculation step for calculating the biological reaction amount of each of the biological material and the fourth biological material, and the biological reaction amount calculated by the processing of the calculation step, the first biological material and the third biological material An energy determination step for determining an amount of energy that can dissociate the junction between the first biological material and the fourth biological material without dissociating the junction due to the biological reaction. On a computer.
- the third biological material that specifically performs a biological reaction with respect to the first biological material.
- a state in which different amounts of energy are applied to a substrate in which a material containing a quality material and a fourth biological material that non-specifically reacts with the first biological material is dropped into the flow path Parameters corresponding to the respective biological reaction amounts of the third biological material and the fourth biological material are obtained, and based on this parameter, the third biological material in a state where different amounts of energy are given.
- the amount of biological reaction of each of the fourth biological materials is calculated, and based on this, the junction between the first biological material and the third biological material due to the biological reaction is not dissociated, and the first biological material and the first biological material are dissociated.
- the amount of energy that can dissociate the junction due to the biological reaction with the biological substance 4 is determined.
- a target biological material for example, a target gene
- a biological material for example, a gene used as a probe
- a DNA chip for detecting a predetermined biological material by a biological reaction, and in particular, a predetermined energy is applied to the biological material in the solution flowing in the flow path.
- the target biological material can be effectively associated with the biological material fixed to the substrate.
- an electrophoretic biological material for example, a target gene
- a target biological material for example, a target gene
- a gene for example, a gene
- the energy required to increase the number of associations between the substrate and a biological substance immobilized on the substrate for example, a gene used as a probe
- dissociate non-specific biological reactions is required.
- FIG. 1 is a block diagram showing a configuration example of an experimental processing apparatus.
- FIG. 2 is a block diagram showing a configuration example of a hybridizing unit in FIG.
- FIG. 3 is a block diagram showing a configuration example of the AC supply unit of FIG.
- FIG. 4 is a diagram for explaining the DNA chip of FIG. 2.
- FIG. 5 is a cross-sectional view for explaining the electromagnetic induction generating portion of FIG.
- FIG. 6 is a diagram for explaining an electric field canceling unit.
- FIG. 7 is a diagram for explaining an electric field cancellation unit.
- FIG. 8 is a diagram for explaining a probe and a target gene.
- FIG. 9 This is a diagram for explaining the energy given at the time of ibridization.
- FIG. 10 is a diagram for explaining the power value supplied to the electromagnetic induction generator also in the AC supply force.
- FIG. 11 is a diagram for explaining AC supply and generation of an electric field by electromagnetic induction.
- FIG. 12 is a diagram for explaining AC supply and generation of an electric field by electromagnetic induction.
- FIG. 13 is a diagram for explaining electrophoresis.
- FIG. 14 is a diagram for explaining electrophoresis.
- FIG. 15 is a diagram for explaining another example of the shape of the DNA chip.
- FIG. 16 is a diagram for explaining another example of the shape of the DNA chip.
- FIG. 17 is a block diagram illustrating a configuration example of a biological information processing apparatus.
- FIG. 18 is a flowchart for explaining the process of the experimental process.
- FIG. 19 is a flowchart for explaining hybridizing processing.
- FIG. 20 is a flowchart for explaining pre-operation processing.
- FIG. 21 is a flowchart for explaining supply power condition determination processing.
- FIG. 22 is a block diagram illustrating a configuration example of a personal computer.
- the probe refers to a biological substance fixed on a bioassay substrate such as a DNA chip, which reacts with the target.
- the target is a biological material that bioreacts with a biological material fixed on a bioaccessory substrate such as a DNA chip.
- the biological substance includes, in addition to substances generated in vivo such as proteins, nucleic acids, sugars, and the like, genes having mutually complementary base sequences or substances derived therefrom.
- the biological reaction means that two or more biological substances react biochemically.
- a typical example is a hybridization.
- Noblinization refers to a complementary strand (double strand) forming reaction between nucleic acids having a complementary base sequence structure.
- the experimental processing apparatus 1 includes an adjustment unit 21, a hybridization unit 22, an acquisition unit 23, an expression level estimation unit 24, a standardization unit 25, an output unit 26, a storage unit 27, and a supply power amount determination unit 28.
- the acquisition unit 23, the expression level estimation unit 24, the standardization unit 25, the output unit 26 and the storage unit 27, and the supply power amount determination unit 28 are configured by a biological information processing device 401 described later with reference to FIG. Be beaten!
- the adjustment unit 21 adjusts the target and prepares for hybridization using a DNA chip to be described later.
- the hybridizing unit 22 performs hybridization between the probe and the target. The details of the node 22 will be described later with reference to FIG.
- the acquisition unit 23 irradiates the intercalator coupled to the hybridized probe and the target with laser light, and acquires the fluorescence intensity of the intercalator as the reflected light.
- the expression level estimation unit 24 estimates the amount of hybridization based on the acquired fluorescence intensity, and performs processing for estimating the expression level of the target gene.
- the standardization unit 25 standardizes data.
- the output unit 26 outputs the expression profile data.
- the storage unit 27 stores expression profile data.
- the supplied power amount determination unit 28 is based on the estimation result of the expression level supplied by the expression level estimation unit 24, and in the preliminary work process described later using FIG. 20, will be described later using FIG.
- the power value to be used by the hybridizing unit 22 is calculated in the process of the experiment process and is supplied to the hybridizing unit 22.
- the hybridizer 22 executes the process of the experiment process using the supplied power value.
- FIG. 2 is a block diagram showing a detailed configuration example of the hybridizing unit 22 in FIG.
- the hybridizing unit 22 includes an AC supply unit 41 and an electromagnetic induction generating unit 42.
- a DNA chip 43 is attached to the electromagnetic induction unit 42 for hybridizing processing.
- On the DNA chip 43 there is provided a groove-like channel into which a solution containing the target gene is dropped. Details of the configuration of the DNA chip 43 will be described later with reference to FIG.
- the AC supply unit 41 controls generation of an AC current for generating electromagnetic induction in the electromagnetic induction generating unit 42 and supplies it to the electromagnetic induction generating unit 42. Details of the AC supply unit 41 will be described later with reference to FIG.
- the electromagnetic induction generation unit 42 generates electromagnetic induction by the alternating current supplied from the alternating current supply unit 41, and a solution containing the target gene provided on the mounted DNA chip 43 is dropped. A magnetic field along the flow path of the DNA chip 43 is generated in the vicinity of the flow path, and one of the electric fields generated to cancel the generated magnetic field is canceled and the other is maintained. Since the target gene is charged, it undergoes electrophoresis in the flow path formed on the DNA chip 43 under the force of the electric field generated to cancel the magnetic field generated by the electromagnetic induction generator 42. Details of the electromagnetic induction generator 42 will be described later with reference to FIGS.
- FIG. 3 is a block diagram showing the configuration of the AC supply unit 41.
- the frequency setting unit 61 sets the oscillation frequency of the oscillator 62.
- the oscillator 62 oscillates a signal having a frequency set by the frequency setting unit 61 so that the electromagnetic induction generating unit 42 generates electromagnetic induction.
- the RF power 'amplifier 63 amplifies a signal having a predetermined frequency oscillated by the oscillator 62 and supplies the amplified signal to the E class' amplifier 64.
- the E class' amplifier 64 is supplied with the AC voltage whose voltage value is controlled by the variable power source 67, and is the power value set by the power setting unit 65, and is supplied from the RF power amplifier 63.
- the signal is amplified to an AC voltage at the signal frequency and supplied to a wattmeter (SWR meter) 68.
- the power setting unit 65 does not dissociate the hybrid of the target (specific) target gene and the probe, which is determined by the pre-processing described later, and the target! In order to dissociate only the hybrid with the target gene, a power value corresponding to the energy supplied for electrophoresis of the solution containing the target is set in DNA chip 43, and E class' The power setting value is supplied to the amplifier 64.
- the AC100V supply unit 66 supplies the AC 1 OOV voltage to the variable power supply 67 by, for example, an outlet input or a predetermined battery.
- the variable power supply 67 uses a 100V AC voltage supplied from the AC100V supply unit 66 as a predetermined voltage of OV to 120V based on the measured output voltage of the E-class amplifier 64 supplied from the wattmeter 68.
- E class' amplifier 6 4 To E class' amplifier 6 4
- the wattmeter 68 is a ratio of the maximum value and the minimum value of the standing wave generated in the radio wave transmission line.
- SWR Standing wave ratio
- Vmax maximum value
- ZVmin minimum value
- the wattmeter 68 supplies the measurement result to the variable power supply 67, and supplies the supplied AC voltage to the electromagnetic induction generator 42 (the magnetic field generator 111, which will be described later, having the shape of an electromagnetic induction coil).
- a plurality of closed circular grooves are concentrically formed on the DNA chip 43, and the circular grooves are formed in the reaction tank for expression analysis 81-1 and the reaction tank for expression analysis 81-2. Used as. In other words, the flow path constituted by the concave grooves is continuous with both the start point and the end point.
- the expression analysis reaction tank 81 when it is not necessary to distinguish between the expression analysis reaction tank 81-1 and the expression analysis reaction tank 81-2, they are simply referred to as the expression analysis reaction tank 81.
- a guide 413) in FIG. 17 is provided on the DNA chip 43 at a position suitable for specifying the position of the reaction tank 81 for expression analysis.
- each spot 83 has a plurality of spots as biological substances (first biological substances) having different gene sequences,
- the probe for verification of the ibridiz is fixed.
- the hybridization verification probe has a base having a complementary structure to the base.
- the target as the biological material (second biological material) to be hybridized.
- the expression standardization control probes may be dispersed and arranged at a plurality of predetermined positions in the spots 83 of the expression analysis reaction tank 81 as necessary.
- a target as a biological material (second biological material) having a base complementary to the base hybridizes to the control probe for expression standardization.
- FIG. 5 is a cross-sectional view of a state in which the DNA chip 43 is mounted on the electromagnetic induction generator 42 (a cross-sectional view when cut along a straight line corresponding to the diameter of the mounted DNA chip 43).
- two circular flow paths are provided for the expression analysis reaction tank 81-1 and the expression analysis reaction tank 81-2, so that the DNA chip 43 can be mounted, and the electromagnetic induction generating section. 42 will be described as an example.
- the electromagnetic induction generating unit 42 includes an electromagnetic induction unit 101-1- and an electromagnetic induction unit 101-2, which are an expression analysis reaction tank 81-1 and an expression analysis reaction tank. 81 2 It is designed to be positioned above and below the two circular flow paths. In other words, with the DNA chip 43 attached to the electromagnetic induction generator 42, the same circular shape as the expression analysis reaction tank 81-1 is formed above and below the expression analysis reaction tank 81-1.
- the electromagnetic induction part 101-1 is located, and the electromagnetic induction part 101-2 having the same circular shape as the expression analysis reaction tank 81-2 is positioned above and below the expression analysis reaction tank 81-2. You It is made so that.
- the electromagnetic induction section 101-1 is provided with a magnetic field generating conductive section 111-1, an insulating section 112-1, and an electric field canceling section 113-1 on the upper surface of the expression analysis reaction tank 81-1.
- the magnetic field generating conductive portion 111-3, the insulating portion 112-3, and the electric field canceling portion 113-3 are provided on the lower surface of the reaction tank 81-1 for expression analysis.
- the electromagnetic induction unit 10 1-2 is provided with a magnetic field generating conductive unit 111-2, an insulating unit 112-2, and an electric field canceling unit 113-2 on the upper surface of the expression analysis reaction tank 81-2.
- a magnetic field generating conductive part 111-4, an insulating part 112-4, and an electric field canceling part 113-4 are provided on the lower surface of the reaction tank 81-2 for expression analysis.
- Magnetic field generating conductive part 111-1 and magnetic field generating conductive part 111-3, insulating part 112-1 and insulating part 112-3, and electric field canceling part 113-1 and electric field canceling part 113-3 It has a circular shape similar to that of the reaction tank 81-1, and includes a magnetic field generating conductive part 1112, a magnetic field generating conductive part 1114, an insulating part 112-2, an insulating part 112-4, and an electric field canceling part.
- the 113-2 and the electric field canceling unit 113-4 have the same circular shape as the expression analysis reaction tank 81-2.
- the electromagnetic induction unit 101 when it is not necessary to particularly distinguish between the electromagnetic induction unit 101-1 and the electromagnetic induction unit 101-2, they are simply referred to as the electromagnetic induction unit 101, and the magnetic field generating conductive unit 111 1 to the magnetic field generating conductive unit 111 —
- the magnetic field generating conductive portion 111 When there is no particular need to distinguish 4, it is simply referred to as the magnetic field generating conductive portion 111, and when it is not necessary to distinguish between the insulating portions 112-1 to 112-4, it is simply referred to as the insulating portion 112,
- the electric field canceling unit 113-1 to the electric field canceling unit 113-4 are simply referred to as the electric field canceling unit 113 when it is not necessary to distinguish between them.
- the magnetic field generating conductive section 111 is a coil-shaped electric conductive section (electromagnetic induction coil) having a circular shape similar to the expression analysis reaction tank 81-1, and is generated by the AC supply section 41.
- a magnetic field is generated by receiving an AC voltage. Then, in order to cancel the generated magnetic field, a circular electric field having a shape matching the shape of the circular flow path of the expression analysis reaction tank 81 of the DNA chip 43 is generated.
- FIGS. 6 and 7 show that the electric field canceling unit 113 is perpendicular to the plane of the mounted DNA chip 43. It is a figure which shows the state observed from various directions.
- the electric field canceling unit 113 includes a plurality of metal parts 121 and a plurality of diodes 122. In FIG. 6 and FIG. 7, the electric field canceling unit 113 is allowed to allow the counterclockwise current to cancel the electric field formation.
- a magnetic field is formed perpendicularly to the circular plane of the electric field canceling unit 113 from the near side to the far side in the figure (from the top to the bottom in FIG. 6). Then, a counterclockwise current flows through the electric field canceling unit 113 so as to cancel this magnetic field. As a result, the electric field formation accompanying electromagnetic induction can be canceled.
- a magnetic field is formed perpendicular to the circular plane of the electric field canceling unit 113 from the far side to the near side (from the bottom to the top in FIG. 7). Then, a clockwise electric field is formed so as to cancel this magnetic field, but in the electric field canceling unit 113, a clockwise current is prevented from flowing by the diode 122. Therefore, the electric field formation accompanying electromagnetic induction is maintained without cancellation.
- the electric field canceling unit 113 allows the counterclockwise current to be canceled so as to cancel the electric field formation.
- the connection direction of the force diode 122 is reversed.
- the electric field cancellation unit 113 permits clockwise current.
- the electric field formation is canceled, that is, only the counterclockwise electric field is generated. That is, in the electric field canceling unit 113, the electric field in the direction based on the connection direction of the diode 122 is canceled, and the direction of the electric field generated in the circular flow path of the expression analysis reaction tank 81 is controlled.
- the circuit of the electric field canceling unit 113 (circular conductive path by the diode 122) can permit electric fields in different directions to each of the circular flow paths of the expression analysis reaction tank 81 of the DNA chip 43. Therefore, the same number of expression analysis reaction tanks 81 are provided.
- the probe 141 provided in the spot 83 not only hybridizes with the target gene 142 (PM), which is the target gene of interest, but also as a purpose. It may hybridize non-specifically with the MM (Mismatch) target gene 143 that did not exist.
- PM target gene 142 is the mRNA to be measured
- MM target gene 143 is a hybridisation probability with probe 141 that is designed to be assumed to PM target gene 142 and to be hybridized. Power The largest mRNA, excluding PM target gene 142, which is expected to be expressed.
- the vertical axis is the dissociation probability between the target and the probe
- the horizontal axis is the energy given from outside
- the dissociation probability curve 161 in the hybrid with the PM target gene 142 and the MM target Dissociation probability curve 162 for hybridizing with gene 143 shows nonspecific hybridization to dissociate hybrid with PM target gene 142 More energy is required than to dissociate MM target gene 143.
- the dissociation probability is assumed to have a Gaussian distribution centered on the Tm (Melting temperature) value of the probe 141 and the PM target gene 142 or the MM target gene 143.
- Tm value is the temperature at which 50% of double-stranded DNA dissociates into single-stranded DNA.
- the separation energy to be given to the expression analysis reaction tank 81 in order to dissociate only the hybrid with the MM target gene 143 can be used.
- the separation energy to be given to the expression analysis reaction tank 81 in order to dissociate only the hybrid with the MM target gene 143 without dissociating the hybrid with the PM target gene 142 is more simply An average value of Tm values of the target gene 142 and the MM target gene 143 may be used.
- the force PM that is applied to the target gene that is electrophoresed in the flow path constituted by the reaction tank 81 for expression analysis during the hybridization process (electrophoresis) PM When adjusted to the separation energy to be given to the reaction tank 81 for expression analysis in order to dissociate only the hybrids with the MM target gene 143 without dissociating the hybrids with the target gene 142, the target The detection accuracy of the gene, that is, the PM target gene 142 can be increased.
- the probe 141 is directly hybridized with the PM target gene 142 and the MM target gene 143, and the intensity of electromagnetic induction from the outside is reduced.
- the hybrid distribution for each probe 141 is a binding strength matrix as shown in the following equation (1), and the intensity of electromagnetic induction that maximizes the specificity between the target gene and the probe is calculated using equation (4). You may ask.
- Equation (4) is the sum of the variance when taking the row component of the bond strength matrix and the variance when taking the column component, and the electromagnetic induction strength force PM target gene 142 that maximizes this. This is the condition that maximizes the specificity between probes 141.
- each of the magnetic field generating conductive portions 111 is supplied with an alternating current as shown in A of FIG. Currents flow alternately, so that a magnetic field is generated.
- -2 and the magnetic field generating conductive part 111-4 shall be supplied with an alternating current of the opposite polarity.
- the AC current is supplied from the AC supply unit 41 to the magnetic field generating conductive unit 111 1 and the magnetic field generating conductive unit 1113 of the electromagnetic induction generating unit 42 so that the AC current is clockwise!
- the magnetic field generating conductive unit 111-2 and the magnetic field generating conductive unit 111-4 of the electromagnetic induction generating unit 42 have alternating currents of opposite polarity (ie, counterclockwise). A current is supplied. Therefore, the magnetic fields perpendicular to the flow path constituted by the expression analysis reaction tank 81 generated by the magnetic field generating conductive portion 111-1 to the magnetic field generating conductive portion 111 4 are not canceled out. ,.
- an electric field is generated in a direction that cancels out the magnetic field generated by the magnetic field generating conductive portion 1111 through the magnetic field generating conductive portion 1114.
- the electric field canceling unit 113-1 to the electric field canceling unit 113-4 are configured to allow a counterclockwise current to flow! /
- the magnetic field generating conductive unit 111 1 and the magnetic field generating conductive unit 111 The electric field generated by 3 is canceled, and only the electric fields generated by the magnetic field generating conductive portion 111 2 and the magnetic field generating conductive portion 111 4 are maintained. That is, in the state shown in FIG. 11B, a clockwise electric field is formed only in the expression analysis reaction tank 81-2, and the target gene is electrophoresed.
- the AC supply unit 41 is supplied to the magnetic field generating conductive unit 111 1 and the magnetic field generating conductive unit 1113 of the electromagnetic induction generating unit 42.
- the state in which the AC current is counterclockwise will be described with reference to Fig. 12B.
- the magnetic field generating conductive unit 111 2 and the magnetic field generating conductive unit 111 4 of the electromagnetic induction generating unit 42 are supplied to the magnetic field generating conductive unit 111 1 and the magnetic field generating conductive unit 111 3, respectively. Since an alternating current having a polarity opposite to that of the flowing current is supplied, the magnetic field in the direction perpendicular to the flow path constituted by the expression analysis reaction tank 81 is not canceled.
- An electric field is generated in a direction that cancels the magnetic field generated by an alternating current flowing through the magnetic field generating conductive portion 1111 to the magnetic field generating conductive portion 1114.
- the electric field canceling unit 113-1 to the electric field canceling unit 113-4 are operated so that a counterclockwise current flows, the magnetic field generating conductive unit 111-2 and the magnetic field generating conductive unit 111-4 are used.
- the counterclockwise electric field generated by is canceled, and only the clockwise electric field generated by the magnetic field generating conductive portion 111 1 and the magnetic field generating conductive portion 1113 is maintained.
- a clockwise electric field is formed only in the expression analysis reaction vessel 81-1, and the target gene is electrophoresed.
- the electric field canceling unit 113 causes the expression analysis reaction vessel 81-1 and the expression analysis reaction vessel 81-2 to rotate counterclockwise.
- the conduction field is canceled and a clockwise induction electric field pulsates (similar to an AC half-wave rectified waveform). Since the target gene has a negative charge, it electrophoreses counterclockwise by a clockwise induction electric field. As shown in FIG.
- the energy supplied as described with reference to FIG. 10 is applied to the PM target gene 142 and the MM target gene 143 to be electrophoresed as described with reference to FIG.
- the electromagnetic induction generator 42 even if the predetermined probe 141 and the target PM target gene 142 are hybridized, the binding is not released, but the predetermined probe 141 and the target MM are not released.
- the target gene 143 is hybridized, the bond is dissociated by the applied energy. Therefore, the target genes 301 to 304 contained in the solution in the flow path shown in FIG. 13 are sequentially given to the optimal probe during electrophoresis by being given a predetermined energy.
- target genes having different molecular weights are electrophoresed, as shown in FIG. 14, the target genes having a small molecular weight rotate faster, and the rotation speed of the target gene decreases as the molecular weight increases.
- the target gene 301 having a small molecular weight moves quickly in the flow path of the target gene 304 having a large molecular weight.
- the other target genes 302 and 303 also move in the flow path at a speed corresponding to the molecular weight, but the flow path of the reaction tank 81 for expression analysis has no end, so that it receives electric energy with predetermined energy.
- Each target gene 301 to 304 that migrates continues to flow around the flow path, and the supply of alternating current from the alternating current supply unit 41 to the magnetic field generation conductive unit 111 of the electromagnetic induction generation unit 42 is started and sufficient time passes. In the channel. Meets the best of the probes 141 placed.
- the flow path of the DNA chip may be a straight line as shown in FIG. 15, for example, besides the circular shape.
- the electrophoretic target genes 301 to 303 shown in the figure do not continue to migrate. Therefore, the association rate between the plurality of probes 141 provided in the spots 83-1 to 83-10 and the corresponding PM target gene is reduced as compared with the case of the circular flow path.
- the energy supplied as described with reference to FIG. 9 is applied to the electromagnetic induction generator 42 as shown in FIG. 10 so that the energy target electrophoretic PM target gene 142 and MM target gene 143 described with reference to FIG.
- the flow path constituted by the DNA chip expression analysis reaction tank 81 is preferably a closed flow path even if it has a shape other than a circular shape.
- it has a closed triangular channel such as DNA chip 361 shown in FIG. 16A, or a closed rectangular channel like DNA chip 381 shown in FIG. May be.
- the shape of the closed channel provided in the DNA chip is configured to include a curve even if it is a polygon other than that! Even if it is a shape! ⁇ .
- the target genes 301 to 303 to be electrophoresed continue to migrate until they are hybridized with the target probe 141, and the probe 141 is not in contact with the probe 141. Since the specifically hybridized MM target gene 143 is dissociated, AC supply is started from the AC supply unit 41 to the magnetic field generation conductive unit 111 of the electromagnetic induction generation unit 42, and after a sufficient time has passed. The hybridized state is very good.
- the electromagnetic induction generating section 42 to which the DNA chip 361 shown in FIG. 16A and the DNA chip 381 shown in FIG. 16B can be attached is an electromagnetic induction section 101 having a shape matching the shape of each flow path. It goes without saying that it is made to have.
- the intercalator is coupled to the probe and the target as the biological material hybridized (bioreacted) in the DNA chip 43.
- Intercurry The fluorescent light emits fluorescence when irradiated with excitation light.
- FIG. 17 shows a configuration example of the biological information processing apparatus 401.
- This biological information processing apparatus 401 has a pickup unit 421, a fluorescence intensity acquisition unit 422, an excitation light intensity calculation unit 423, a hybridizing amount estimation unit 424, an expression amount calculation unit 425, a standardization unit 426, an output unit 427, an expression profile.
- a data storage unit 428, a user interface (UI) unit 429 having a display unit 429 A, a fluorescence intensity hybridizing amount conversion type storage unit 430, and a supply power value determining unit 431 are included.
- the biometric information processing device 401 is configured.
- the acquisition unit 23 includes a pickup unit 421, a fluorescence intensity acquisition unit 422, an excitation light intensity calculation unit 423, and a fluorescence intensity hybridizing amount conversion formula storage unit 430.
- the hybridizing amount estimating unit 424 and the expression amount calculating unit 425 are configured.
- the standardizing unit 25 is configured by the standardizing unit 426.
- the output unit 26 is configured by the output unit 427.
- the storage unit 27 is the expression profile data storage unit 428.
- the supplied power amount determining unit 28 is configured by a supplied power amount determining unit 431.
- Probe 141 and target as a biological material that has been hybridized (bioreacted) in DNA chip 43 that has been installed or mounted at a predetermined position and has been hybridized. Is connected to an inter force generator. Intercalator emits fluorescence when irradiated with excitation light
- the pickup unit 421 in FIG. 17 includes a fluorescence intensity acquisition pickup 441, a guide signal acquisition pickup unit 442, a control unit 443, an objective coordinate calculation unit 444, and a convolution expansion unit 445.
- the fluorescent intensity acquisition pickup 441 is a pickup that acquires an image of the expression analysis reaction tank 81 of the DNA chip 43.
- the guide signal acquisition pickup unit 44 is a pickup that acquires an image of the expression analysis reaction tank 81 of the DNA chip 43.
- Reference numeral 2 denotes a pickup for reading the guide 413.
- Pickup for obtaining fluorescence intensity 441 includes objective lens 451, prism 452, and semiconductor laser. 453, and a photodiode 454.
- Laser light (excitation light) emitted from the semiconductor laser 453 enters the objective lens 451 through the prism 452, and the objective lens 451 transmits the incident laser light on the DNA chip 43 (spot 83). Irradiate.
- the objective lens 451 also enters the light from the spot 83 into the photodiode 454 via the prism 452.
- a plurality of probes are fixed to each spot 83, and when the probe and the target are hybridized, an intercalator is further coupled to both.
- the intercalator generates fluorescence when irradiated with excitation light.
- the fluorescence condensed by the objective lens 451 is separated from the excitation light by the prism 452 and enters the photodiode 454.
- Control unit 443 performs current control of semiconductor laser 453 and adjusts the intensity of the excitation light.
- the control unit 443 reads the output (current amount variation) of the photodiode 454.
- the convolution developing unit 445 receives a signal based on the current amount change output from the photodiode 454 from the control unit 443, and generates image data in units of pixels.
- the guide signal acquisition pickup 442 includes an objective lens 461, a prism 462, a semiconductor laser 463, and a photodiode 464.
- the semiconductor laser 463 generates laser light based on control from the control unit 443 (this laser light functions as guide detection light).
- the prism 462 makes the laser beam from the semiconductor laser 463 incident on the object lens 461, and the objective lens 461 irradiates the DNA chip 43 with this laser beam.
- the objective lens 461 receives the reflected light from the DNA chip 43, and the prism 462 separates the reflected light power and emits it to the photodiode 464.
- the photodiode 464 photoelectrically converts the reflected light incident from the prism 462 and uses the control unit 44 as a guide signal. Output to 3.
- the control unit 443 outputs the guide signal input from the photodiode 464 to the objective coordinate calculation unit 444.
- the guide 413 is formed so that the reflectance is higher (or lower) than the other areas of the DNA chip 43.
- the objective coordinate calculation unit 444 determines the position of the guide 413 and the position (coordinates) of the guide signal acquisition pickup 442. ).
- the control unit 443 controls the position of the fluorescence intensity acquisition pickup 441 (objective lens 451) based on the position of the guide signal acquisition pickup 442 calculated by the objective coordinate calculation unit 444.
- the guide signal acquisition pickup 442 and the fluorescence intensity acquisition pickup 441 are fixed to each other in a predetermined positional relationship.
- the fluorescence intensity acquisition unit 422 receives the input of the fluorescence intensity (pf) from each spot 83 (its coordinates (X, y)) output from the photodiode 454 of the fluorescence intensity acquisition pickup 441.
- the fluorescence intensity acquisition unit 422 also controls objective coordinates (X, y), objective area radius (r), and control signal for controlling the excitation light intensity on the DNA chip 43 of the objective lens 451 of the fluorescence intensity acquisition pickup 441. Output to part 443.
- the control unit 443 controls the object lens 451 based on this control signal.
- the objective lens 451 is arranged at a predetermined coordinate (X, y) on the DNA chip 43, and the radius (object area radius) (r) of the irradiation range of the laser light emitted from the objective lens 451 is a predetermined value.
- the intensity of the laser beam (excitation light intensity) is adjusted to a predetermined value.
- the fluorescence intensity acquisition unit 422 outputs the fluorescence intensity supplied from the control unit 443 to the excitation light intensity calculation unit 423.
- the excitation light intensity calculation unit 423 calculates the optimum excitation light intensity based on the conversion equation and other necessary parameters stored in the fluorescence intensity-hybridization amount conversion equation storage unit 430, and The excitation light intensity obtained by the calculation is output to the fluorescence intensity acquisition unit 422.
- the fluorescence intensity acquisition unit 422 controls the current of the semiconductor laser 453 based on the excitation light intensity from the excitation light intensity calculation unit 423, and causes the semiconductor laser 453 to emit excitation light having a predetermined intensity.
- the hybridizing amount estimation unit 424 is based on the fluorescence intensity supplied from the fluorescence intensity acquisition unit 422.
- the image data or the expression profile data storage unit 428 is stored in advance and receives image information such as expression profile data, and performs processing for estimating the excitation light intensity as necessary. Further, the hybridizing amount estimation unit 424 creates a conversion formula for uniquely determining the hybridizing amount from the fluorescence intensity, and processes the supplied image data.
- the hybridization amount estimation unit 424 calculates a hybridization amount based on the processed image data. Further, the hybridization amount calculation unit 85 calculates the hybridization rate of each of the PM target gene 142 and the MM target gene 143 in the DNA chip 43 for the preliminary work in the preliminary work described later with reference to FIG. Supply to decision unit 431.
- the user interface unit 429 displays an image corresponding to the processed image data input from the hybridization amount estimation unit 424 on the display unit 429A.
- the expression level calculation unit 425 estimates the expression level corresponding to the fluorescence intensity by obtaining the binding strength of the target to the probe based on the output from the hybridization level estimation unit 424.
- the standardization unit 426 performs standardization processing using a control probe for expression standardization.
- the output unit 427 supplies the standardized data to the expression profile data storage unit 428.
- the expression profile data storage unit 428 stores the data supplied from the output unit 427 as expression profile data.
- the data stored in the expression profile data storage unit 428 is supplied to the user interface unit 429 as necessary and displayed on the display unit 429A.
- the data output from the expression level calculation unit 425 is also displayed on the display unit 429A as necessary.
- the fluorescence intensity-hybridization amount conversion equation storage unit 430 is a conversion equation that uniquely determines the relationship between the fluorescence intensity and the corresponding hybridization amount (although the data for conversion is not necessarily formed). Even if,)) is stored in advance.
- the supplied power amount determination unit 431 performs the PM target gene 142 and the MM in the DNA chip 43 for pre-operation calculated by the hybrid amount calculation unit 85 in the pre-operation described later with reference to FIG. Based on the respective hybridization rates of the target gene 143, in the hybrids executed in the process of the experimental process described later using FIG.
- An AC supply unit 41 is generated, determines the supply power value of the AC voltage to be supplied to the electromagnetic induction generation unit 42, and supplies it to the AC supply unit 41 of the hybridizing unit 41.
- step S11 the adjustment unit 21 adjusts the target. Specifically, a sample containing cells is taken out, and the protein is denatured and removed from the sample. RNA (ribonucleic acid) is extracted and fragmented, and DNA (deoxyribonucleic acid) is removed. Extraction and fragmentation adjust targets including PM target gene 412 and MM target gene 413.
- step S12 a hybridizing process to be described later with reference to FIG. 19 is executed.
- step S13 the acquisition unit 23 acquires the fluorescence intensity. Specifically, the fluorescence intensity acquisition unit 422 drives the fluorescence intensity acquisition pickup 441 via the control unit 443 and causes the semiconductor laser 453 to emit laser light as excitation light. The excitation light is incident on the objective lens 451 through the prism 452, and the objective lens 451 irradiates the reaction tank 81 for expression analysis on the DNA chip 43 with the excitation light.
- the intercalator binds to the probe 141 and the target (PM target gene 142 or MM target gene 143) as the hybridized (bioreacted) biological substance, and the pickup for acquiring fluorescence intensity 441 Fluorescence is generated in response to the excitation light emitted from.
- This fluorescence is collected by the objective lens 451 and enters the photodiode 454 through the prism 452.
- the photodiode 454 outputs a current corresponding to the incident fluorescence.
- the control unit 443 converts the signal corresponding to the current into an image signal by the convolution unit 445, and outputs a signal corresponding to the fluorescence intensity generated by the conversion to the fluorescence intensity acquisition unit 422.
- the control unit 443 moves the position of the objective lens 451 based on the position of the guide 413.
- the laser light power as guide detection light emitted from the semiconductor laser 463 of the guide signal acquisition pickup 442 enters the objective lens 461 via the prism 462, and the object lens 461 transmits the guide detection light to the DNA chip 43. Irradiate.
- the intensity of reflected light of the guide detection light becomes stronger (or weaker) when the guide 413 is irradiated. This reflected light is the objective
- the light enters the prism 462 via the lens 461 and enters the photodiode 464 from the prism 462.
- the objective coordinate calculation unit 444 acquires a guide signal of 464 photodiodes via the control unit 443, and based on this signal, the guide signal acquisition pickup 442 (therefore, the fluorescence intensity acquisition pickup integrated therewith). 441) calculates the force and coordinates of any position of the guide 413 of the DNA chip 43. Based on the coordinates, the control unit 443 moves (scans) the guide signal acquisition pickup 442 (fluorescence intensity acquisition pickup 441) at a constant speed.
- the fluorescence intensity acquisition pickup 441 is moved so as to scan the expression analysis reaction tank 81 at a predetermined speed, and an image signal at each coordinate is output from the fluorescence intensity acquisition pickup 441. Is done.
- step S14 the expression level estimation unit 24 executes expression level estimation processing based on the acquired fluorescence intensity. This process calculates the amount of hybrids and the reliability, and calculates the expression level of the gene.
- the image data based on the fluorescence intensity supplied from the fluorescence intensity acquisition unit 422 is processed by the hybridization amount estimation unit 424 to estimate the hybridization amount, and the expression level calculation unit 425 calculates the target for the probe. Based on the binding intensity, the expression level of the gene corresponding to the fluorescence intensity is estimated.
- step S15 the standardization unit 25 (standardization unit 426) standardizes the data in order to correct the variation in hybridization due to the position of the spot 83 in the reaction tank 81 for expression analysis. Execute the process.
- This standardization includes, for example, standardization using a control probe for expression standardization. Specifically, for example, the amount of hybridization in the expression standardization control probe dispersed in a plurality of predetermined positions of the expression analysis reaction tank 81 (solution used in the experiment).
- step S61 of FIG. 19 to be described later a control target that is a target for the expression standardization control probe is added in advance), and the correction value is calculated based on the fluorescence value.
- step S16 the output unit 26 (output unit 427) outputs the expression profile data, and the process is terminated. Specifically, the image data obtained as described above is supplied to the storage unit 27 (expression profile data storage unit 428) and recorded in the output unit 26 (output unit 427).
- step S61 the adjustment unit 21 covers the control target, which is the target for the expression standardization control probe, in the solution containing the PM target gene 412 and the like adjusted in the process of step S11. .
- step S62 the adjusting unit 21 drops a solution containing the target and the control target into the flow path of the expression analysis reaction tank 81 of the DNA chip 43 attached to the hybridizing unit 22, and the DNA.
- the chip 43 is attached to the electromagnetic induction generating part 42 of the hybridizing part 22.
- step S63 the hybridizing unit 22 causes the PM target gene 142 and the MM target gene 143 in the solution dropped into the expression analysis reaction tank 81 of the DNA chip 43 to be electrophoresed in a predetermined direction.
- the hybridizing unit 22 does not dissociate the hybrid between the probe 141 and the PM target gene 142 described with reference to FIG. 9 and FIG. 10, or Expressions (1) to (6).
- an alternating current having a power value corresponding to the separation energy to be given to the expression analysis reaction tank 81 is sent from the alternating current supply unit 41 to the electromagnetic induction generation unit 42. Supply.
- an electric field is formed in the predetermined direction of the flow path of the expression tank 81 of the DNA chip 43 due to electromagnetic induction, and the expression of the DNA chip 43 is analyzed.
- PM target gene 142 and MM target gene 143 in the solution dropped into reaction tank 81 are Electrophoresis in a predetermined direction.
- the reaction tank 81 for expression analysis that forms a closed circular channel described with reference to FIG. 4 or a polygonal closed channel as described with reference to FIG. 16 is formed.
- the PM target gene 142 to be electrophoresed continues to migrate until it is hybridized with the target probe 141, and the probe 141 is nonspecifically detected.
- the MM target gene 143 is dissociated by the supplied energy, the supply of alternating current is started from the alternating current supply unit 41 to the magnetic field generation conductive unit 111 of the electromagnetic induction generation unit 42, and the force has also elapsed sufficiently long. The hybridized state after this will be very good.
- step S64 after a sufficient time has passed since the supply of alternating current is started from the AC supply unit 41 to the magnetic field generating conductive unit 111 of the electromagnetic induction generating unit 42, the hybridizing unit 22 is fixed by noise hybridization.
- the missing probes, that is, the single-stranded probe and the target are removed from the DNA chip 43 by washing.
- step S65 the hybridizing unit 22 introduces an intercalator between the probe 141 and the target that are double-stranded, and the process returns to step S12 in Fig. 18 and proceeds to step S13.
- step S63 the PM target gene 142 and the MM target in the flow path of the expression analysis reaction tank 81 of the DNA chip 43 are induced by electromagnetic induction as described with reference to FIGS. 13 to 14. Since gene 143 is electrophoresed with a predetermined energy, even if MM target gene 143 is hybridized to probe 141, sufficient energy is given to dissociate. Nonspecific ibribration is likely to be dissociated. Further, since the PM target gene 142 has more opportunities to associate with the probe 141, the hybridization rate is improved.
- step S91 the probe 141 provided on the DNA chip 43 is designed.
- step S92 the designed probe 141 is fixed to the spot 83 in the flow path of the expression analysis reaction tank 81 of the DNA chip 43, whereby the DNA chip 43 is created.
- step S93 calibration for obtaining the fluorescence intensity-hybridization amount conversion equation is performed. Specifically, by using a target solution containing a predetermined amount of PM target 142, etc., various parameters necessary for the process of the experiment are acquired by performing hybridization and fluorescence intensity acquisition processing.
- step S94 the probe-target binding strength matrix for expression level estimation shown by the above-described equations (1) to (3) is acquired.
- step S93 and step S94 is executed using the biological information processing apparatus 401 described with reference to FIG. 17, for example.
- step S95 a supply power condition determination process, which will be described later with reference to FIG. 21, is executed, and the process ends.
- a DNA chip 43 used in the experimental process is generated, and the fluorescence intensity-hybridization amount conversion formula and probe-target binding necessary for estimating the expression level based on the fluorescence intensity.
- the power supply condition generated by the AC supply unit 41 of the hybridizing unit 22 and supplied to the electromagnetic induction generating unit 42 is determined so that the intensity matrix is acquired and the hybridization is performed efficiently.
- step S95 in FIG. 20 The supply power condition determination process is executed by using the adjustment unit 21, the nodding unit 22, the acquisition unit 23, the expression level estimation unit 24, or an apparatus capable of performing processing equivalent to these.
- step S121 PM target gene 142 and MM target gene 143 are prepared.
- PM target gene 142 is the mRNA to be measured
- MM target gene 143 is a hybridisation probability with probe 141 created so that PM target gene 142 is assumed and hybridized. Power The largest mRNA, excluding PM target gene 142, which is expected to be expressed.
- step S122 the adjustment unit 121 binds, for example, a fluorescent substance such as cy3 or cy5 to the PM target gene 142 and the MM target gene 143, for example.
- step S123 the adjustment unit 121 sets the PM target in the flow path of the expression analysis reaction tank 81 of the generated DNA chip 43 in the same manner as described using steps S61 and S62 of FIG. A solution containing gene 142 and MM target gene 143 is dropped. Then, the DNA chip 43 is attached to the hybridizing part 22.
- step S124 the hybridizing unit 22 causes a plurality of values of alternating current to be generated in the alternating current supplying unit 41 and supplied to the electromagnetic induction generating unit 42, as described with reference to Figs. Then, the PM target gene 142 and the MM target gene 143 are electrophoresed in the flow path of the expression analysis reaction tank 81 of the DNA chip 43 by electromagnetic induction, and the DNA chip 43 hybridized at the respective AC voltage values is obtained. Then, the hybridizing unit 22 removes the probe, that is, the single-stranded probe and the target, which are not fixed by the hybridization, from each DNA chip 43 by, for example, washing.
- step S125 the acquisition unit 23 acquires the fluorescence intensity in the hybridized DNA chip 43 in accordance with the respective AC voltage values, in the same manner as described with reference to step S13 in FIG.
- step S126 the expression level estimation unit 24, that is, the hybridization level estimation unit 424 estimates the expression level in the same manner as described using step S14 of FIG. MM target gene 143 and probe 141 Each hybridization rate is obtained, and the PM target gene 142 and the MM target gene 143 are supplied to the supplied power value determination unit 431 for each given AC voltage value, in other words, for each energy amount given for electrophoresis. Supply the hybridization rate.
- step S127 the supplied power value determining unit 28, that is, the supplied power value determining unit 431, for example, as described with reference to FIG. 9 or FIG. 10, or the equations (1) to (6) ),
- the AC supply unit 41 is generated in the hybrid that is executed in the process of the experimental process described with reference to FIG. 18, and the optimal AC to supply to the electromagnetic induction generation unit 42
- the power supply value of the voltage that is, the energy required to dissociate the MM target gene 143 non-specifically hybridized to the probe 141 without dissociating the PM target gene 142 correctly hybridized to the probe 141.
- the power value that can be given to the target gene to be migrated is determined and supplied to the AC supply unit 41 of the hybridizing unit 22, and the process is completed.
- the power supply condition generated by the AC supply unit 41 of the hybridized unit 22 and supplied to the electromagnetic induction generating unit 42 is determined so that the hybridization is performed efficiently.
- the target is formed by closing the flow path into which the solution containing the target is dropped (any shape such as a circle or a polygon may be used). After a sufficient time has elapsed since the supply of alternating current from the AC supply unit 41 to the magnetic field generation conducting unit 111 of the electromagnetic induction generating unit 42 is started, the number of associations between the gene and the probe can be increased. The state of noblinds is very good.
- the energy required to dissociate the MM target gene 143 non-specifically hybridized to the probe 141 without dissociating the PM target gene 142 correctly hybridized to the probe 141 is obtained.
- the amount of power to supply the target gene to be electrophoresed is required. When this energy is given to the target gene during the hybridization process, non-specific hybrids dissociate without dissociating the specific hybrid, improving the target gene detection accuracy. To do.
- the biological information processing apparatus 1 includes a personal computer 901 as shown in FIG.
- a CPU Central Processing Unit
- ROM Read Only Memory
- RAM Random Access Memory
- the CPU 921, ROM 922, and RAM 923 are connected to each other via a bus 924.
- An input / output interface 925 is also connected to the bus 924.
- the input / output interface 925 includes an input unit 926 including a keyboard and a mouse, a display including a CRT (Cathode Ray Tube) and an LCD (Liquid Crystal display), an output unit 927 including a speaker, and a hard disk.
- a storage unit 928 configured and a communication unit 929 including a modem are connected.
- the communication unit 929 performs communication processing via a network including the Internet.
- a drive 930 is also connected to the input / output interface 925 as necessary, and a removable medium 931 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is appropriately mounted, and these forces are read out.
- a computer program is installed in the storage unit 928 as necessary.
- this recording medium is a magnetic disk (including a floppy disk) on which a program is recorded, which is distributed to provide a program to the user separately from the main body of the apparatus.
- Removable media consisting of optical discs (including CD-ROM (Compact Disk-Read Only Memory), DVD (Digital Versatile Disk)), magneto-optical disks (including MD (Mini-Disk)), or semiconductor memory It is configured by a ROM 922, a hard disk included in the storage unit 928, etc., in which a program is recorded that is provided to the user in a state of being pre-installed in the apparatus main body.
- the system means a logical collection of a plurality of devices (or functional modules that realize a specific function), and each device or functional module is a single case. It does not matter whether it is in the body.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Hematology (AREA)
- Biotechnology (AREA)
- Electrochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biomedical Technology (AREA)
- Clinical Laboratory Science (AREA)
- Urology & Nephrology (AREA)
- Fluid Mechanics (AREA)
- Medicinal Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Microbiology (AREA)
- Power Engineering (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Organic Chemistry (AREA)
- Genetics & Genomics (AREA)
- General Engineering & Computer Science (AREA)
- Cell Biology (AREA)
- Sustainable Development (AREA)
- Food Science & Technology (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/910,039 US20090197773A1 (en) | 2005-03-31 | 2006-03-29 | Bioreaction Execution System and Bioreaction Execution Method, DNA Chip, Information Processing System and Information Processing Method, Program, and Recording Medium |
EP06730434A EP1865322A1 (en) | 2005-03-31 | 2006-03-29 | Bioreaction execution apparatus, method of bioreaction execution, dna chip, information processing unit, method of information processing, program and recording medium |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005100379A JP4517921B2 (ja) | 2005-03-31 | 2005-03-31 | 生体反応実行装置および生体反応実行方法、情報処理装置および情報処理方法、プログラム、並びに、記録媒体 |
JP2005-100379 | 2005-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006106741A1 true WO2006106741A1 (ja) | 2006-10-12 |
Family
ID=37073304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/306486 WO2006106741A1 (ja) | 2005-03-31 | 2006-03-29 | 生体反応実行装置および生体反応実行方法、dnaチップ、情報処理装置および情報処理方法、プログラム、並びに、記録媒体 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090197773A1 (ja) |
EP (1) | EP1865322A1 (ja) |
JP (1) | JP4517921B2 (ja) |
KR (1) | KR20070116617A (ja) |
CN (1) | CN101156069A (ja) |
WO (1) | WO2006106741A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014032147A1 (pt) * | 2012-08-29 | 2014-03-06 | Manfredi Jose Felix | Analisador eletroforético por indução eletromagnética |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009063436A (ja) * | 2007-09-06 | 2009-03-26 | Olympus Corp | 蛍光顕微鏡およびマイクロ分析チップ |
WO2010111657A2 (en) * | 2009-03-26 | 2010-09-30 | New York University | System, method and computer-accessible medium for determining membrane properties relating to diffusion |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002501174A (ja) * | 1997-12-30 | 2002-01-15 | ルマクル,ジョゼ | ディスク表面上に固定された捕獲分子を含む方法 |
JP2002333444A (ja) * | 2001-02-23 | 2002-11-22 | Matsushita Electric Ind Co Ltd | 遺伝子診断装置及び遺伝子診断方法 |
JP2003156476A (ja) * | 2001-11-26 | 2003-05-30 | Matsushita Electric Ind Co Ltd | 遺伝子診断装置及び遺伝子診断方法 |
JP2003185665A (ja) * | 2001-10-23 | 2003-07-03 | Samsung Electronics Co Ltd | 相補分子間の結合検出方法およびその方法に利用されるせん断応力測定センサー |
JP2004045376A (ja) * | 2002-05-21 | 2004-02-12 | Sony Corp | バイオアッセイ用基板 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020177144A1 (en) * | 1997-12-30 | 2002-11-28 | Jose Remacle | Detection and/or quantification method of a target molecule by a binding with a capture molecule fixed on the surface of a disc |
US6491805B1 (en) * | 2000-05-23 | 2002-12-10 | Agilent Technologies, Inc. | Sample-analysis system with antisynchronously driven contactless conductivity detector |
WO2002081729A2 (en) * | 2001-04-06 | 2002-10-17 | California Institute Of Technology | Nucleic acid amplification utilizing microfluidic devices |
DE60221240T2 (de) * | 2001-05-02 | 2007-10-31 | Applera Corp., Foster City | Konzentration und reinigung von analyten mit elektrischen feldern |
-
2005
- 2005-03-31 JP JP2005100379A patent/JP4517921B2/ja not_active Expired - Fee Related
-
2006
- 2006-03-29 KR KR1020077022274A patent/KR20070116617A/ko not_active Application Discontinuation
- 2006-03-29 WO PCT/JP2006/306486 patent/WO2006106741A1/ja active Application Filing
- 2006-03-29 US US11/910,039 patent/US20090197773A1/en not_active Abandoned
- 2006-03-29 EP EP06730434A patent/EP1865322A1/en not_active Withdrawn
- 2006-03-29 CN CNA2006800111559A patent/CN101156069A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002501174A (ja) * | 1997-12-30 | 2002-01-15 | ルマクル,ジョゼ | ディスク表面上に固定された捕獲分子を含む方法 |
JP2002333444A (ja) * | 2001-02-23 | 2002-11-22 | Matsushita Electric Ind Co Ltd | 遺伝子診断装置及び遺伝子診断方法 |
JP2003185665A (ja) * | 2001-10-23 | 2003-07-03 | Samsung Electronics Co Ltd | 相補分子間の結合検出方法およびその方法に利用されるせん断応力測定センサー |
JP2003156476A (ja) * | 2001-11-26 | 2003-05-30 | Matsushita Electric Ind Co Ltd | 遺伝子診断装置及び遺伝子診断方法 |
JP2004045376A (ja) * | 2002-05-21 | 2004-02-12 | Sony Corp | バイオアッセイ用基板 |
Non-Patent Citations (1)
Title |
---|
SOSNOWSKI R.G. ET AL.: "Rapid determination of single base mismatch mutations in DNA hybrids by direct electric field control", PROC. NATL. ACAD. SCI. USA, vol. 94, 1997, pages 1119 - 1123, XP002928936 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014032147A1 (pt) * | 2012-08-29 | 2014-03-06 | Manfredi Jose Felix | Analisador eletroforético por indução eletromagnética |
Also Published As
Publication number | Publication date |
---|---|
KR20070116617A (ko) | 2007-12-10 |
JP2006284185A (ja) | 2006-10-19 |
EP1865322A1 (en) | 2007-12-12 |
JP4517921B2 (ja) | 2010-08-04 |
US20090197773A1 (en) | 2009-08-06 |
CN101156069A (zh) | 2008-04-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8247196B2 (en) | Real-time PCR of targets on a micro-array | |
US6777184B2 (en) | Detection of nucleic acid hybridization by fluorescence polarization | |
EP1542009B1 (en) | Method of detecting nucleic acid by using dna microarrays and nucleic acid detection apparatus | |
US9228970B2 (en) | Heat-transfer resistance based analysis bioparticles | |
EP1146331B1 (en) | Gene detecting chip, detector, and detecting method | |
Khoshfetrat et al. | Wireless electrochemiluminescence bipolar electrode array for visualized genotyping of single nucleotide polymorphism | |
JPWO2003062418A1 (ja) | 核酸情報の検出方法及び装置 | |
WO2006053770A1 (en) | Real-time pcr of targets on a micro-array | |
AU2001261523A1 (en) | Detection of nucleic acid hybridization by fluorescence polarization | |
JP4517921B2 (ja) | 生体反応実行装置および生体反応実行方法、情報処理装置および情報処理方法、プログラム、並びに、記録媒体 | |
WO2006115059A1 (ja) | 生体情報処理装置および方法、プログラム並びに記録媒体 | |
Zhang et al. | Ultrasensitive electrochemical DNA assay based on counting of single magnetic nanobeads by a combination of DNA amplification and enzyme amplification | |
US8288128B2 (en) | Real-time quantification of multiple targets on a micro-array | |
Taira et al. | Self‐assembly DNA‐conjugated polymer for detection of single nucleotide polymorphism | |
Yi et al. | Emerging ctDNA detection strategies in clinical cancer theranostics | |
Marcy et al. | Innovative integrated system for real-time measurement of hybridization and melting on standard format microarrays | |
Fathi et al. | Chemical binding of pyrrolidinyl peptide nucleic acid (acpcPNA‐T9) probe with AuNPs toward label‐free monitoring of miRNA‐21: A novel biosensing platform for biomedical analysis and POC diagnostics | |
Kim et al. | Washing-free electrochemical DNA detection using double-stranded probes and competitive hybridization reaction | |
US20070178463A1 (en) | Micro-array substrate for biopolymer, hybridization device, and hybridization method | |
US10081831B2 (en) | Method and arrangement for calibrating a sensor element | |
JP2006300795A (ja) | 生体情報測定装置および方法、プログラム並びに記録媒体 | |
JP2006300798A (ja) | 生体情報処理装置および方法、プログラム並びに記録媒体 | |
Okamura et al. | Development of a clinical microarray system for genetic analysis screening | |
Yu et al. | Sensitive and Specific Y-Shaped Ratio Biosensor for Detecting Serum miR-18a: Potential Early Scanning Tool for Non-Small Cell Lung Cancer | |
JP2002325566A (ja) | 核酸センサ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200680011155.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006730434 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077022274 Country of ref document: KR |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
NENP | Non-entry into the national phase |
Ref country code: RU |
|
WWP | Wipo information: published in national office |
Ref document number: 2006730434 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11910039 Country of ref document: US |