WO2006085604A1 - 分析用の蓋付きマイクロチップ、該蓋付きマイクロチップのサンプル処理方法、該蓋付きマイクロチップの自動サンプル処理方法、該処理方法に基づく、自動サンプル処理装置、ならびに、該自動サンプル処理方法を応用する物質の分析装置 - Google Patents
分析用の蓋付きマイクロチップ、該蓋付きマイクロチップのサンプル処理方法、該蓋付きマイクロチップの自動サンプル処理方法、該処理方法に基づく、自動サンプル処理装置、ならびに、該自動サンプル処理方法を応用する物質の分析装置 Download PDFInfo
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- WO2006085604A1 WO2006085604A1 PCT/JP2006/302333 JP2006302333W WO2006085604A1 WO 2006085604 A1 WO2006085604 A1 WO 2006085604A1 JP 2006302333 W JP2006302333 W JP 2006302333W WO 2006085604 A1 WO2006085604 A1 WO 2006085604A1
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- Prior art keywords
- lid
- microchip
- sample
- substrate
- flow path
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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
- B01L3/502707—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 the manufacture of the container or its components
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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
- B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above
-
- 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
- G01N27/44708—Cooling
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- 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
- G01N27/44756—Apparatus specially adapted therefor
- G01N27/44791—Microapparatus
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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
- B01L2300/04—Closures and closing means
- B01L2300/041—Connecting closures to device or container
- B01L2300/044—Connecting closures to device or container pierceable, e.g. films, membranes
-
- 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
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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
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0887—Laminated structure
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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
- B01L2300/1822—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks using Peltier elements
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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
- B01L2300/1894—Cooling means; Cryo cooling
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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
- B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above
- B01L3/5085—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above for multiple samples, e.g. microtitration plates
- B01L3/50853—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above for multiple samples, e.g. microtitration plates with covers or lids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
- Y10T436/25375—Liberation or purification of sample or separation of material from a sample [e.g., filtering, centrifuging, etc.]
Definitions
- Microchip with lid for analysis sample processing method for microchip with lid, automatic sample processing method for microchip with lid, automatic sample processing apparatus based on the processing method, and application of automatic sample processing method Analysis equipment
- the present invention relates to a processing method for a sample to be analyzed in a microchip with a lid when using a microchip with a lid for analysis, a method for automating the processing, and an automatic sample processing based on the method
- the present invention relates to a biomaterial analyzing apparatus to which the automatic sample processing method is applied. Furthermore, the present invention relates to a microchip with a lid for analysis, which is exclusively used for application of the processing method.
- a processing method relates to an automatic sample processing apparatus according to an automated processing method, and further to a microchip with a lid having a configuration suitable for the processing method.
- a sample containing a biomaterial's chemical substance when analyzing and specifying the biomaterial or chemical substance such as protein and nucleic acid contained in the sample, it is included in the sample, for example.
- bioassay ⁇ Chemical assembly is used in order to specify the characteristics and quantity of the separated substances after separating them using various separation means such as electrophoresis and chromatography.
- separation means such as electrophoresis and chromatography
- Bioassay ⁇ Chemical assembly is used in these analytical methods, in the separation process of biomaterials, depending on the applied separation means, for example, a single capillary tube or column tube is used corresponding to electrophoresis or chromatography. ing.
- the bioassay “Chemical Atsey” for the separated target substance measures various biological reactions and biochemical reactions in a variety of well plates.
- a “microchip” that can produce a flow path with a small volume and that can be temperature-controlled by further integrating the flow paths is useful.
- a microchip is a substrate in which a groove-like channel having a desired planar shape and channel arrangement and a lid for the channel are combined in a predetermined arrangement and bonded or fixed. is there.
- the groove-like channel part provided in this microchip is used as a capillary space 'column space for separation by electrophoresis or chromatography, and further, a well space provided in the channel is used.
- a method of conducting a nano-assy chemical assay has been proposed (Non-patent Document 1: Qinglu Mao et al., Analyst, vol. 124, 637—641 (1999)).
- Patent Document 1 International Publication No. 03Z071263 pamphlet.
- the “microchip” itself is cooled on a thermoelectric cooler in order to prevent the liquid in the fine channel from being heated and the solvent from evaporating by the high voltage applied during isoelectric point separation. 'The temperature is controlled and the upper surface of each groove-like channel is sealed with a lid. After performing a separation operation such as electrophoresis, the lid is removed and the substrate is heated or placed in a vacuum to quickly evaporate the solvent in each groove-like flow path. The separated protein is dried and solidified. An appropriate matrix agent is added to the groove-shaped channel, and the protein separated on the microchip is held, and MALD I-MS measurement is performed along the channel to detect each spot point. We are carrying out.
- Patent Literature 1 Pamphlet of International Publication No. 03Z071263
- Non-patent literature l Qinglu Mao et al., Analvst, vol. 124, 637— 641 (19 99)
- Non-Patent Document 2 Michelle L. —S. Mok et al., Analyst, vol. 129, 109-110 (2004)
- microchips with a lid
- various separation means such as electrophoresis and chromatography are applied on the microchip. After the separation operation, the lid is simply removed from the substrate and separated in the flow path.
- the ability to perform further analysis operations on the substances that have been used is a desirable function for further expanding the scope of use of “microchips” with lids.
- the various types of separation methods are applied in advance in the flow path to separate the substances separated by the separation operation at the next stage of analysis or at the time of preparation up to that point. It may be necessary to collect from within the chip. In the process of collecting the material separated from the inside of the microchip, there was a problem that it was adversely affected as described below.
- the substrate is peeled between the upper surface of the substrate and the lower surface of the lid, and the lid is removed. May cause erratic vibration.
- This fine mechanical vibration promotes mixing in the liquid existing in the groove-like flow path, for example, promotes re-diffusion of the target substance separated as a narrow spot point in the groove-like flow path. It becomes a factor to do.
- the diffusion due to the concentration gradient in the liquid progresses within the time required for the removal of the lid, so that re-diffusion of the target substance separated as a narrow spot point in the groove-like flow path occurs. It happens in a certain range.
- the operation for removing the lid is a method that can be automatically performed.
- the present invention solves the above-mentioned problems, and an object of the present invention is to provide a “microchip with a lid”
- a sample processing method that can be performed by a highly reproducible and automated device to recover the target substance that has been separated from the “microchip” while suppressing “undesirable phenomena”.
- Automatic sample processing equipment based on processing method And providing a “microchip” with a lid that can be used exclusively for the implementation of the sample processing method.
- the present inventors have found that in the "microchip" with a lid, the cross-sectional shape of the groove-shaped flow path formed in the substrate portion is a trapezoidal shape with the upper side longer than the lower side, or the lower side and the upper side Adhesive force per unit channel length at the part (upper side) where the frozen sample contacts the lower surface of the lid part p 1S
- the frozen sample peeled off and adhered to the lower surface of the lid.
- the separated “microchip” with a lid is kept at a low temperature condition far below the freezing point so that the separated sample such as electrophoresis in the flow path is kept in a frozen state. Even at the lid's substrate contact surface, which maintains sufficient adhesive strength near room temperature, the adhesive strength suddenly decreases at a low temperature, and is lower than the adhesive strength indicated by the frozen sample. It can be a situation.
- the groove-like flow is used instead of making the upper surface of the substrate part and the lower surface of the lid part on which the groove-like flow path is formed heat-bonded to form a stronger adhesive state.
- the upper surface of the substrate part on which the path is formed and the lower surface of the lid part are weakly adhered and do not show any force, but in order to compensate for this, even if mechanical external pressure is applied and the sealing characteristics are maintained, it is strong. It was also found that the situation was the same when the mechanical external pressure was removed.
- the frozen sample solution has the advantage of being solid and easy to handle, it has been found that the frozen sample solution can be divided and moved to a predetermined position for further processing.
- the cross-sectional shape of the grooving channel has a trapezoidal shape with the upper side longer than the lower side, or a rectangular shape with the lower side equal to the upper side, and the frozen sample contacts the lower surface of the lid.
- the liquid sample to be analyzed is subjected to a desired separation operation using, for example, a separation method such as electrophoresis, using a flow path formed in a microchip with a lid,
- the separated liquid sample held in the flow path is subjected to an operation of freezing the contained solution
- the separated sample is maintained in a frozen state, and a lid portion whose upper surface is sealed with respect to the groove-like channel formed in the substrate portion is used as a base. Perform the operation of peeling and removing from the plate part,
- the separated sample from the groove-like channel formed in the substrate part maintains the frozen state. While attached to the lower surface of the lid,
- the frozen samples can be individually divided and moved to a predetermined position for further processing.
- the microchip with a lid that works on the present invention is:
- the cross-sectional shape of the fluted channel is a trapezoidal shape with the upper side longer than the lower side, or a rectangular shape with the lower side and the upper side equal to each other, where the frozen sample is in contact with the lower surface of the lid (upper side )
- a liquid sample to be analyzed is formed on a microchip with a lid! After applying a predetermined separation means using a flow path and applying a desired separation operation, the microchip with a lid is applied.
- the microchip with lid has a predetermined arrangement in which the upper surface of the lid closes the upper surface of the substrate and the lower surface of the lid with respect to the groove-shaped flow path formed in the substrate.
- the substrate part of the microchip with the lid is cooled to achieve a predetermined low temperature condition below the freezing point, and the contained solution is frozen on the separated liquid sample held in the flow path.
- the substrate part of the microchip with the lid is cooled and held at the predetermined low temperature, and separated.
- the internal force of the groove-shaped flow path in a state where the sample is attached to the bottom surface of the lid while keeping the frozen state while maintaining the frozen state,
- a lid peeling step for applying an external force to the end of the lid and peeling and removing the lid from the substrate;
- the attachment and fixation are released from the upper surface of the substrate portion, and the separated lid portion is placed in the state where the separated sample is kept frozen.
- the separated lid portion While maintaining the state of adhering to the lower surface of the lid part, moving from the upper surface of the substrate part, reversing the top and bottom of the upper surface of the upper part of the lid part, separating the state of maintaining the frozen state adhering to the lower surface of the lid.
- a process of removing the lid, which performs a moving and reversing operation to hold the separated lid in an arrangement in which the finished sample is exposed on the surface, and a series of these steps are performed. This is a sample processing method.
- the present invention is an automatic sample processing method characterized by automatically performing a series of these steps.
- examples of separation operations performed on the liquid sample to be analyzed using a flow path formed in a microchip with a lid include an electrophoresis method or a liquid phase chromatography method.
- electrophoresis particularly isoelectric focusing is preferred.
- sample processing method of the microchip with a lid which is useful in the present invention is as follows.
- the separated sample that is detached and collected from the groove-shaped flow path formed in the substrate portion while adhering to the bottom surface of the lid portion while maintaining the frozen state is used for the separated sample.
- the road it is divided into several sections,
- the automatic sample processing apparatus for a microchip with a lid according to the present invention applies a predetermined separation means to a liquid sample to be analyzed by using a channel formed on the microchip with a lid.
- the lid portion sealing the upper surface of the groove-shaped flow path formed in the substrate portion brings the upper surface of the substrate portion and the lower surface of the lid portion into close contact with each other. It achieves an adhesive state by arrangement!
- the liquid sample to be analyzed is applied to the microchip with the lid that has been subjected to the desired separation operation using the flow path formed in the microchip with the lid.
- a substrate part cooling mechanism that can be placed in contact with the substrate part of the microchip with lid, and cooling by the substrate part cooling mechanism that is placed in contact with the substrate part, at least a predetermined low temperature below the freezing point
- the control mechanism of the cooling mechanism that can be maintained at the conditions
- a substrate portion fixing mechanism capable of fixing the substrate portion of the microchip with lid to an arrangement in contact with the substrate portion cooling mechanism
- An external force application mechanism having a function of applying an external force having a substantially vertical direction component to the end of the lid
- the end of the lid In synchronization with the external force applied to the end of the lid by the external force application mechanism, the end of the lid is moved in a direction substantially perpendicular to the contact interface between the upper surface of the substrate and the lower surface of the lid.
- a lid end moving mechanism to be moved;
- a lid end moving speed control mechanism having a function of controlling the moving speed of the end of the lid in order to control the radius of curvature indicated by the local stagnation of the lid at Substrate upper surface force
- the substrate upper surface force adhesive fixing is released, the separated lid is held, moved from the upper surface of the substrate, and the top and bottom of the upper surface of the lid is reversed.
- a separation mechanism for removing the separated lid which has a function of exposing the lower surface of the lid to the surface.
- An automatic sample processing apparatus having an automatic operation control mechanism having a function of automatically executing the operation of each mechanism for performing the series of operations according to a predetermined process program.
- an electrophoresis method or a liquid phase chromatography method is an example of a separation operation performed on a liquid sample to be analyzed using a flow path formed in a microchip with a lid.
- the electrophoresis method particularly the isoelectric point swimming method is preferable.
- the automatic sample processing apparatus for a microchip with a lid includes:
- the lid removal mechanism With the lid removal mechanism, it is detached from the groove-shaped flow path formed in the substrate portion and collected in a predetermined state while adhering to the lower surface of the lid portion while maintaining the frozen state.
- a fractionation mechanism having a function of breaking a frozen sample, which is divided into a plurality of sections along the flow path to obtain a plurality of frozen sample fragments
- each frozen sample piece prepared by fractionating the separated sample into a plurality of sections is transferred to each hole of the multi-well sample plate and subjected to re-dissolution treatment.
- a constitution having a fraction re-dissolution treatment mechanism having a transfer function and a heat re-dissolution function is also possible to have a constitution having a fraction re-dissolution treatment mechanism having a transfer function and a heat re-dissolution function.
- the present invention applies the automatic sample processing method for a microchip with a lid according to the present invention having the above-described configuration, and performs separation by a separation means such as electrophoresis using the microchip with a lid.
- a separation means such as electrophoresis
- the separated sample by the separation means adheres to the lower surface of the lid while maintaining the frozen state.
- the substrate is separated from the groove-like flow path formed in the substrate section, it is collected and maintained in a state where this frozen state is maintained.
- the present invention also provides an invention of a sample analysis method in which an analysis operation such as a nano assay or a chemical assay is further performed on each fraction.
- the sample analysis method according to the present invention is:
- a liquid sample to be analyzed is formed on a microchip with a lid! After being subjected to a desired separation operation such as electrophoresis using a flow channel, it is formed on the microchip with a lid.
- a desired separation operation such as electrophoresis using a flow channel
- the component substances spot-separated on the flow channel are fractionated into a plurality of sections along the flow channel. This is a method for performing bio-assessment or chemical-assy analysis of the contained component substances.
- the upper surface of the groove portion formed in the substrate portion and the lid portion sealing and sealing the upper surface closely contact the upper surface of the substrate portion and the lower surface of the lid portion. Achieving an adhesive state with a fixed arrangement!
- the upper surface of the substrate portion is sealed and sealed, and the lid portion is removed.
- a fractionation step in which a component substance separated as a spot point is contained in any one of the plurality of fractions on the groove-like flow path formed in the substrate portion; and the electrophoretic separation Re-dissolve the frozen sample fragments contained in multiple fractions corresponding to a part of the finished sample to prepare each fractionated sample solution.
- the positions at both ends of the fraction are based on positional information on the flow paths at both ends of the fraction.
- the corresponding electrophoretic index value is specified, the range of each fraction is specified, and the bioassay or chemical assay analysis is performed on each fractionated sample solution.
- a fraction analysis process for determining whether or not a component substance exhibiting the properties specified by the analysis is included;
- a sample processing method for a microchip with a lid By using a microchip with a lid, a sample processing method for a microchip with a lid, an automatic sample processing method for a microchip with a lid, and an automatic sample processing apparatus for a microchip with a lid according to the present invention.
- the sample liquid to be analyzed is subjected to a separation operation such as electrophoresis, and then adhered and fixed to the upper surface of the substrate part constituting the “microchip” with a lid.
- a separation operation such as electrophoresis
- a separation method such as electrophoresis is applied, followed by further analysis using the separated sample.
- Storage and analysis of liquid samples as they are, for example, sample preparation operations prior to bioassay or chemical assay analysis can suppress re-diffusion and change in separation state, and can be automated with higher reproducibility. And Therefore, the separation method such as electrophoresis is applied even if the number of sample liquids to be analyzed is large. Thus, the separated sample can have high and reproducibility of the sample processing process itself for further analysis.
- FIG. 1 is a diagram schematically illustrating a problem to be solved by the present invention.
- FIG. 2 is a diagram schematically showing an example of a microchip channel used in the present invention.
- FIG. 3 is a diagram schematically showing an example of a microchip configuration with a lid used in the present invention.
- FIG. 4 is a diagram schematically showing another example of a microchip configuration with a lid used in the present invention.
- FIG. 5 is a diagram schematically showing a configuration example of a lid peeling mechanism that can be used in the automatic sample processing apparatus according to the present invention, and an operation used in the peeling mechanism of the first embodiment. It is a figure which shows a principle.
- FIG. 6 is a diagram schematically showing a configuration example of a lid peeling mechanism that can be used in the automatic sample processing apparatus according to the present invention, and an operation used in the peeling mechanism of the second embodiment. It is a figure which shows a principle.
- FIG. 7 is a diagram schematically showing a configuration example of a lid peeling mechanism that can be used in the automatic sample processing apparatus according to the present invention, and an operation used in the peeling mechanism of the third embodiment. It is a figure which shows a principle.
- FIG. 8 is a diagram schematically showing a configuration example of a lid peeling mechanism that can be used in the automatic sample processing apparatus according to the present invention, and an operation used in the peeling mechanism of the fourth embodiment. It is a figure which shows a principle.
- FIG. 9 is a diagram schematically showing a configuration example of a lid peeling mechanism that can be used in the automatic sample processing apparatus according to the present invention, and an operation used in the peeling mechanism of the fifth embodiment. It is a figure which shows a principle.
- FIG. 12 is a diagram schematically showing another example of the microchip flow path used in the present invention.
- the target sample is a flow formed in a microchip with a lid with respect to the liquid sample to be analyzed.
- Applying a desired lid using a channel applying a separation method such as electrophoresis to a plurality of substances contained in the liquid sample along the channel, forming spot points, respectively, Is a separated liquid sample.
- the separated liquid sample that has been subjected to the separation operation using the separation method such as electrophoresis is placed in the flow path formed on the microchip with the lid when the predetermined lid is finished. Held in a liquid state.
- sample preparation processing is performed according to the analysis method in the subsequent stage. It is necessary to apply.
- the latter analysis method uses a bioassay or a case in which a reaction in a liquid phase is used.
- each spot point is formed along the flow path so that it is included in any one of a plurality of divided fractions along the flow path.
- an operation of subdividing into a plurality of fraction samples is performed. After that, each fraction sample is subjected to an assembly analysis according to a predetermined reaction procedure, and whether or not a substance involved in the target reaction is present in the fraction sample. Evaluate the amount contained in the sample.
- the microchip, the sample processing method, the automatic sample processing method, and the automatic sample processing apparatus according to the present invention are formed on the microchip with a lid after performing a separation operation using a separation method such as electrophoresis. This is used for processing that subdivides the separated liquid sample in the flow channel into a plurality of fractionated samples along the flow path that does not impair the separation state of the substances separated in position.
- a separation method such as electrophoresis
- electrophoretic separation equivalent to the conventional capillary electrophoresis method can be applied.
- the biological material contained in the liquid sample to be analyzed is a protein
- isoelectric focusing that performs mutual separation utilizing the difference in isoelectric point indicated by each protein
- Electrophoretic separation in which mutual separation is performed by utilizing the difference in migration speed derived from the difference in molecular weight, can be used.
- the biological material contained in the liquid sample to be analyzed is a nucleic acid molecule
- mutual separation is performed using the difference in base length, that is, the difference in migration speed due to the difference in molecular weight. The swimming separation performed is available.
- the planar shape of the flow channel itself, the arrangement of the flow channel, and the length of the flow channel formed on the lidded microchip are appropriately selected according to the electrophoresis separation method to be used.
- a flow path configuration having a planar shape shown in FIG. 2 can be selected.
- a separation channel 107 b used for isoelectric focusing separation is formed on the upper surface of the substrate unit 103, and a biological material to be migrated, for example, a protein, with respect to the channel 107b.
- an input flow path 107a for introducing the gas is introducing the gas.
- liquid reservoirs 105d, 10 5c is formed, and acid and base solutions for pH gradient formation are introduced into the liquid reservoirs 105d and 105c, and electrode ends for applying an electric field are inserted.
- Reservoir portions 105a and 105b are also formed at both ends of the input channel 107a.
- the liquid reservoir portions 105a and 105b are also inserted with an electrode end for applying an electric field, and generate an electric field to be used when the protein moves in the input channel 107a.
- FIG. 12 shows an example of a flow path configuration including only the separation flow path 107b used for isoelectric focusing separation.
- Reservoir portions 105d and 105c are formed at both ends of the separation channel 107b formed on the upper surface of the substrate portion 103, and an acid and a base solution for pH gradient formation are introduced into the reservoir portions 105d and 105c. .
- An electrode end for applying an electric field is inserted to generate an electric field used for protein movement in the separation channel 107b.
- the shape of the separation channel 107b illustrated in FIG. 12 is a single lane configuration.
- the force is extended to a multi-lane type microchip in which a plurality of groove-like channels are provided on the upper surface of the substrate 103. It is also possible.
- the column agent used in the liquid phase chromatography method is filled in a flow path formed in a microchip with a lid, and is flowed from one end of the flow path to the other end at a predetermined flow rate. It is set as the structure which distribute
- the column agent that can be used by filling the flow path formed in the microchip with a lid one that has a fine particle diameter and that has a relatively increased adsorption cross-sectional area can be suitably used. It is.
- Silica particles and polymer particles are examples of column agents that are suitable for a column flow path having such a fine cross-sectional area.
- the channel length L of the column channel formed in the microchip with a lid is selected to be at least 10 mm or more and 2000 mm or less, preferably 50 mm or more and 400 mm or less.
- the pore diameter of the column agent used is preferably in the range of 1 nm or more and 50 nm or less, and the specific surface area of the column agent is preferably selected in the range of 30 mm 2 Zg or more and 800 mm 2 Zg or less.
- the microchip with a lid has a substrate portion 103 in which a groove-shaped channel having a trapezoidal shape in which the cross-sectional shape is longer in the upper side than the lower side or a rectangular shape in which the lower side and the upper side are equal is formed on the upper surface. And a lid 113 that seals and seals the upper surface of the groove-shaped flow path.
- the lid 113 is formed with holes for injecting liquid corresponding to the liquid reservoirs provided at the ends of the groove-shaped flow path, while the upper surface of the groove-shaped flow path is completely covered. Is done.
- the lid portion 113 is an adhesive resin used for bonding the plate-like lid base material portion 101 having a function of maintaining the mechanical strength of the lid portion 113 and its lower surface portion to the upper surface of the substrate portion 103. And a film layer 102.
- the liquid injection hole formed in the plate-like lid base material portion 101 and the adhesive resin film layer 102 is aligned with the liquid reservoir portions 105d and 105c and the liquid reservoir portions 105a and 105b. Yes.
- the hole for liquid injection in which the plate-like lid base part 101 and the adhesive resin film layer 102 are formed is used for applying an electric field to the liquid reservoirs 105d and 105c and the liquid reservoirs 105a and 105b. It is also used when inserting the electrode end of the.
- the plate-like lid base material portion 101 and the adhesive resin film layer 102 used for adhesion between the lower surface portion and the upper surface of the substrate portion 103 are configured using the same material. It is also possible. It is also possible to produce the pre-cover base part 101 and the adhesive resin film layer 102 as an integrated type.
- the electrode end fixing member 110 is preliminarily attached to the plate-like lid base material portion 101. It is attached. Prior to the electrophoresis operation, the electrode end for applying an electric field can be fixed using the electrode end fixing member 110, and in the process of moving to automatic sample processing after the electrophoresis operation is completed, The electrode end for application is removed from the electrode end fixing member 110.
- the lid base material portion 101 and the electrode end fixing member 110 can be made of different materials and assembled, or they can be made of the same material, and at that time, they may be made of an integral type. .
- the operation of attaching and detaching the electrode end for applying an electric field accompanying this electrophoresis operation is performed by placing and fixing the microchip with a lid at a predetermined position by the microchip fixing mechanism of the electrophoretic device.
- the mutual positions of the plurality of electrode ends for application can be performed using a predetermined electrode end attaching / detaching mechanism.
- the mechanism and the electrode end attaching / detaching mechanism can be automatically operated.
- the microchip after completion of the electrophoresis operation, it is more desirable that the microchip itself automatically perform a series of sample processing operations while maintaining its position. It is preferable to automate the fixing operation of the attached microchip.
- the electrode end fixing member 110 is attached and fixed in a form that also constitutes the side wall portion of the liquid injection hole of the plate-like lid base portion 101.
- the electrode end fixing member 110 is connected to the upper end of the liquid injection hole of the plate-like lid base portion 101, and a structure to be fixed is selected. You can also.
- the substrate part 103 and the lid part 113 are aligned with each other by aligning the positions of the liquid injection hole and the liquid reservoir part, and the bottom surface of the lid part 113, that is, bonding.
- the upper surface force lid portion 113 of the groove-like flow path 107a is sealed and sealed.
- Bonding between the plate-shaped lid base part 101 and the adhesive resin film layer 102 employs a bonding means exhibiting high adhesive properties, and when peeling / removing the lid part 113 later, peeling is performed on the substrate.
- the form occurring on the adhesive surface between the upper surface of the part 103 and the adhesive resin film layer 102 is selected.
- the adhesive surface between the upper surface of the base plate portion 103 and the adhesive resin film layer 102 is leaked from the groove-like flow passage 107a formed on the upper surface of the substrate portion 103 from the electrophoretic liquid filled in the flow passage. Although it exhibits sufficient adhesive strength to achieve a dense adhesive state that does not cause bleeding, it can be peeled off at this adhesive surface by applying a predetermined external force.
- this load application mechanism it is desirable to select a form in which a substantially uniform load can be distributed over the entire bonding surface between the substrate portion 103 and the lid portion 113.
- a load application mechanism and an electrode end attachment / detachment mechanism After the load is applied by the load load application mechanism, the electrode end is attached by the electrode end attaching / detaching mechanism.
- a material that can achieve the desired processing accuracy is selected when the fine structure processing is performed in order to produce the fine groove-shaped flow path 107.
- the cross-sectional shape of the groove-shaped channel to be produced is selected from the range of the channel width (W) and the channel depth (D) in the range of 5 m to 1000 ⁇ m. Is done.
- the fine channel of the “microchip” is mainly used for an electrophoretic separation operation using a small amount of sample liquid instead of capillary electrophoresis.
- the cross-sectional area (D X W) of the fine groove-like flow path is selected to be in the same range as the cross-sectional area in the single pipe, for example, in a range not exceeding the cross-sectional area with an inner diameter of 100 m.
- the ratio (D / W) of the depth of the channel (D) and the width (W) of the Z channel (D / W) has a processing accuracy determined by the material of the substrate part 103 and the microfabrication means of the grooved channel. It is selected as appropriate in consideration. In general, if the ratio (D / W) is excessively large, the processing difficulty increases. Therefore, it is desirable to select the range 1 / 100 ⁇ D / W ⁇ 10.
- the column agent is filled in the flow path.
- the column agent may occupy 60% to 80% of the volume in the flow path.
- the cross-sectional shape of the groove-shaped flow path to be produced is the width (W) of the flow path and the depth (D) of the flow path is 5 m to 5000 ⁇ m.
- a range of m, preferably 20 m to: L 000 m is selected.
- the ratio (LZW, L / D) of the column channel length, channel width (W), channel depth (D) is in the range of 5 or more, 400 or less, preferably 20 or more
- the range is 300 or less, more preferably 50 or more and 300 or less.
- the channel selected as appropriate in consideration of the material of the substrate unit 103 and the processing accuracy determined by the microfabrication means of the groove-shaped channel.
- Depth (D) The ratio (D ZW) of the width (W) of the Z channel is preferably selected in the range of D / W ⁇ 1.
- the cross-sectional shape of the flow path can be rectangular, and the width of the open portion (W) above the bottom surface of the groove (W) that facilitates desorption of the frozen sample (W)
- Examples of the material of the substrate section 103 include a material suitable for microfabrication such as quartz or glass, silicon, and a plastic material having high insulation characteristics such as polycarbonate, PDMS, PMMA, and the like. Those capable of achieving machining accuracy are preferably used.
- the plate-like lid base portion 101 is made of a material that exhibits flexibility but has a small amount of elastic deformation.
- the plate-like lid base material portion 101 As a material for the plate-like lid base material portion 101, it is possible to perform processing such as preparation of a liquid injection hole, and it is excellent in insulation characteristics and flexible. Materials that exhibit sex are preferably used. For example, acrylic resin such as PMMA (polymethylmetatalylate), polymer resin material such as PDMS (polydimethylsiloxane), especially when it is thin, it is flat and processed without breaking. The easy material is preferably used.
- acrylic resin such as PMMA (polymethylmetatalylate)
- polymer resin material such as PDMS (polydimethylsiloxane)
- the easy material is preferably used.
- Examples of the resin used for the base material of the adhesive resin film layer 102 include PDMS, polyolefin such as PTFE (polytetrafluoroethylene), pp (polypropylene), PE (polyethylene), and polychlorinated butyl, or Polyester or the like is used.
- PDMS polyolefin such as PTFE (polytetrafluoroethylene), pp (polypropylene), PE (polyethylene), and polychlorinated butyl, or Polyester or the like is used.
- PTFE polytetrafluoroethylene
- pp polypropylene
- PE polyethylene
- polychlorinated butyl or Polyester or the like
- the adhesive resin film layer 102 is taken out.
- the resin used for the base material of 102 those maintaining the adhesion of iced bodies are preferable.
- the outermost surface layer of the adhesive resin film layer 102 can adopt a form in which an adhesive film imparting a certain degree of adhesion is applied, but when cooled, the adhesive film whose adhesive properties deteriorate when cooled. Use is desirable.
- the outer shape of the microchip with lid itself and the substrate 103 is rectangular, and the lid 113 that seals the upper surface of the microchip is also rectangular.
- an external force is applied to one end of the lid 113, so that at least one end used for applying the external force is provided with a portion protruding from the outer shape of the substrate 103.
- the peeling and removing direction of the lid portion 113 is selected in the long side direction with respect to the rectangular shape of the outer shape of the substrate portion 103, the outer shape of the lid portion 113 has a length in the long side direction. Make it longer than the long side.
- the action point can be set on the portion extending in the long side direction. Furthermore, after the separation and removal of the lid portion 113 is completed, the separated lid portion is held, moved from the upper surface of the substrate portion, and when performing the removal operation, the end portion of the separated lid portion is supported by the holding mechanism. Therefore, it is possible to set the area for the overhanging portion as a force. In addition, when peeling and removing the lid 113, it is possible to select a form that uses an extended portion in the short side direction of the lid 113 as a portion to which an external force is applied along the long side of the substrate 103. It is.
- the material of the lid 113 that forms the upper surface of the channel in the microchip with lid is often poor in water wettability.
- the electrophoretic liquid is also supplied to the entire capillary with the force of one end of the flow path, but the microchip having an inner wall surface with poor water wettability is used.
- a pressure difference is formed between the liquid reservoir provided at the end of the flow path and the inside of the flow path, and using this pressure difference, the electrophoretic liquid that is supplied with a single liquid pool force It is preferable to use a form in which the liquid is forcibly injected into the flow path.
- the determination system that automatically determines the end time of the injection operation includes, for example, a detection system that detects whether or not the injected electrophoretic solution described below is in a state of filling the entire flow path.
- the judgment system to be used can be used.
- the electrophoretic liquid When the electrophoretic liquid fills the entire flow path, the electrophoretic liquid itself is a medium exhibiting some electrical conductivity. When the resistance value is monitored between the both ends of the flow path, the electrophoretic liquid becomes a predetermined state from the insulated state. It causes a sudden change to the resistance value.
- the state of filling of the swimming fluid can be determined by attaching a resistance detection type liquid detection system that uses the function of the electrophoretic solution as an electrically conductive medium to both ends of each flow path.
- the electrophoretic liquid is a liquid, and the dielectric constant thereof is significantly different from that of gas.
- the dielectric constant thereof is significantly different from that of gas.
- the electrophoretic liquid is a liquid, and the refractive index as well as the dielectric constant is significantly different from that of gas.
- the substrate 103 is made of a light-transmitting material
- the light reflectance on the wall surface of the flow path formed on the upper surface of the substrate portion 103 changes when the wall surface of the electrophoretic liquid is covered.
- a reflectance detection system that detects light reflection from the wall surface of the flow path is installed, it is determined whether or not the electrophoretic liquid has reached the wall surface portion of the monitored flow path. It is also possible. By attaching the wall light reflectance monitor type liquid detection system to both ends of each flow path, the filling state of the electrophoretic liquid can be determined.
- the upper surface force of the substrate portion 103 of the microchip When peeling and removing the lid portion 113, the substrate portion 103 is fixed, and then an external force is applied to one end portion of the lid portion 113 to contact the substrate portion 103 and the lid portion 113.
- One end of the lid 113 is forcibly displaced in a direction substantially perpendicular to the landing surface. Accompanying the displacement of the one end, the lid 113 has a stagnation structure with respect to the bonding surface.
- the substrate unit is fixed to prevent the substrate unit 103 from moving.
- the separated liquid sample such as electrophoresis existing in the groove-like flow path of the substrate part 103 is cooled, and the whole liquid sample is frozen. State.
- This liquid sample is in a state in which soluble substances electrophoretically separated in the electrophoresis solution are dissolved by forming spot points.
- the solvent component is water, such as a force buffer component, and the temperature at which freezing begins is lower than the freezing point (0 ° C) due to the freezing point depression.
- the entire liquid sample is rapidly cooled to a temperature that is significantly lower than the temperature at which freezing begins, and once in a supercooled state, the entire liquid sample in the groove-shaped flow path is frozen at once.
- it is slightly lower than the temperature at which icing starts, and if the solvent water is frozen icingly at the temperature, the substance concentration that is dissolved at the spot point is high, but the substance concentration is low in the region excluding the spot point. Therefore, freezing starts from the area excluding the spot points. In this case, the volume expansion accompanying freezing causes the unfreezing area near the spot point to be compressed, causing the liquid to ooze out of the groove-like channel. In order to avoid this, it is necessary to rapidly cool to a temperature significantly lower than the temperature at which icing starts, and to make it supercooled, so that icing progresses simultaneously throughout the groove-shaped flow path. It is desirable to do so.
- the temperature is significantly lower than the temperature at which icing starts, so It is preferable to use a substrate part cooling mechanism in a cooling state.
- this cooling mechanism it is desirable that the substrate part fixing mechanism and the base plate cooling mechanism are integrated so that it is desirable to arrange the base plate part uniformly in contact with the entire bottom part.
- the fixing of the substrate portion although a form for fixing the side wall portion of the substrate portion is also available,
- substrate part is preferable.
- a form in which the bottom surface of the substrate portion is processed into a flat plane and the bottom surface of the substrate portion is fixed at a predetermined position on a vacuum chuck type fixed stage is preferably used.
- the thickness itself is a few millimeters or less.
- the planar size of the substrate part 103 of the microchip is at least a few millimeters and the short and long sides are less than a few tens of cm. It is preferable that the fixed stage surface is cooled to a predetermined temperature by using a cooling means such as a Peltier element.
- the fixed stage surface and the microchip with the lid are significantly lower than the freezing point (0 ° C)! If the ambient atmosphere contains water to cool, condensation or icing will occur. In order to prevent this dew condensation and icing, the atmosphere around the fixed stage surface and the microchip with lid should be kept in a dry gas atmosphere that does not contain moisture. Specifically, the area including the substrate fixing mechanism and the substrate cooling mechanism itself is installed in an airtight sealed tank, and the airtight sealed tank is placed in a dry air or dry nitrogen atmosphere. The configuration is to be maintained.
- the fixation of the substrate portion 103 of the microchip is integrated when the separation operation such as electrophoresis is completed when other fixing means are used.
- a form is used in which the substrate portion fixing mechanism and the substrate portion cooling mechanism are moved to a position where they can be in close contact with the bottom of the substrate portion 103 of the microchip.
- the integrated substrate unit fixing mechanism and substrate unit cooling mechanism are used prior to separation operations such as electrophoresis. If you want to Even in such a case, it is possible to select a mode in which the integrated substrate unit fixing mechanism and the substrate unit cooling mechanism can be moved in accordance with the operation of carrying in the microchip with a lid to be used.
- the entire liquid sample in the groove-like channel is significantly cooled to a temperature that is significantly lower than the temperature at which icing starts, and once in a supercooled state, the liquid sample in the groove-like channel is temporarily cooled.
- the corner of the rectangular channel cross section in particular, the corner in contact with the lid 113 on the upper surface of the channel is an area that is not filled with liquid in the liquid state.
- the icing state occurs, close contact with the lower surface of the lid 113 on the upper surface of the flow path is achieved.
- the separated sample such as electrophoresis that has become frozen is in close contact with the lower surface of the lid 113 in order to achieve close contact with the lower surface of the lid 113. This is a more favorable situation when using adhesion to a separated sample such as electrophoresis.
- the microchip substrate 103 is fixed by the substrate fixing mechanism, and the icing treatment of the liquid sample in the grooved channel is performed through the cooling of the substrate 103 by the substrate cooling mechanism, and then the icing state is maintained.
- the temperature control and the series of operations are automated by the control mechanism of the cooling mechanism and can be performed according to predetermined conditions.
- the lid part when the substrate part 103 and the lid part 113 constituting the microchip with the lid are separated, the lid part is adhered to the upper surface of the substrate part 103 after fixing the substrate part 103 of the microchip. Adopting a method of peeling and removing 113.
- the upper surface of the substrate portion 103 and the lower surface of the lid portion 113 are brought into close contact with each other, so that the adhesive force that achieves the adhesive state with a predetermined arrangement is released.
- An external force having a directional component perpendicular to the surface is applied to the end of the lid 113 to fold the lid 113 and lift the end of the lid 113 upward while maintaining this curvature at a predetermined curvature.
- peeling the lid portion 113 In contact with the surface of the separated sample such as icing electrophoresis in the grooved channel, the adhesive state is maintained, and instead, peeling on the wall surface of the grooved channel proceeds. Then, the separation of the lid 113 is completed with the separated sample such as frozen electrophoresis attached to the lower surface of the lid 11 3.
- the upper surface of the substrate portion 103 and the lower surface of the lid portion 113 are bonded.
- one end of the lid portion 113 is lifted in a direction substantially perpendicular to the upper surface of the substrate portion 103, and the lid portion 113
- peeling does not start even if it is in a trapped state.
- the sag shape at the time when the threshold condition is satisfied is the amount of displacement of one end of the lid 113 from the upper surface of the substrate 103: ⁇ , and the boundary between the upper surface of the substrate 103 and the lower surface of the lid 113, Length to the point of application of external force applied to one end: It is defined by L, and shows a circular arc shape having a substantially constant radius of curvature: R. That is, if the angle of this arc is 0,
- the force ⁇ applied to the boundary where the upper surface of the substrate portion 103 and the lower surface of the lid portion 113 come into contact is the thickness of the lid portion 113: d, width: b, and its effective Young's modulus: E If the value is used, it can be expressed approximately as follows.
- the peeling proceeds slightly so as to decrease from ⁇ + ⁇ ⁇ ⁇ . And again, it will be in the state where further exfoliation does not advance.
- the stagnation shape shows an arc shape having a substantially constant radius of curvature: R.
- the force P ⁇ applied to the boundary where the upper surface of the substrate portion 103 and the lower surface of the lid portion 113 contact is approximately expressed as follows.
- ⁇ - ⁇ ( ⁇ + ⁇ 6)- ⁇ 4bd 3 E ⁇ / ⁇ 2 (L + AL) ⁇ 3
- the adhesion force per unit area between the upper surface of the substrate 103 and the lower surface of the lid 113 is ⁇
- the automatic sample processing method and the automatic sample processing apparatus When applying the automatic sample processing method and the automatic sample processing apparatus according to the present invention, for example, maintaining a dense adhesion state between the upper surface of the substrate portion 103 and the lower surface of the lid portion 113 is performed on the upper surface of the substrate portion 103.
- the adhesive force of the lower surface of the lid portion 113 it is configured to depend on an external force load that closely contacts the substrate portion 103 and the lid portion 113. At least when the above-described cooling temperature is reached, the adhesive force of the lower surface of the lid portion 113 to the upper surface of the substrate portion 103 is set to a state below a certain level.
- the adhesive force P per unit area between the lower surface of the lid 113 and the upper surface of a sample after icing electrophoresis or the like is determined by the upper surface of the substrate 103 and the lower surface of the lid 113.
- the adhesive force per unit area between the lower surface of the lid 113 and the top surface of the separated sample such as frozen electrophoresis is p.
- the bottom surface of the separated sample such as the grooved channel and frozen electrophoresis Effective adhesive force per unit area between
- the threshold condition under which peeling progresses between the frozen upper surface of the electrophoretic-separated sample and the lower surface of the lid 113 is the same as
- the curvature radius R indicating stagnation at the boundary where peeling proceeds is selected so as not to be smaller than the curvature radius R in the threshold condition (R> R) eq2 eq2
- An external force application mechanism having a function of applying an external force having a direction component substantially perpendicular to the upper surface of the substrate portion to the end of the lid, and synchronization with the application of the external force to the end of the lid
- a lid end moving mechanism for moving the end of the lid in a direction substantially perpendicular to the contact interface between the upper surface of the substrate and the lower surface of the lid, and the lid from the upper surface of the substrate.
- the curvature radius R indicated by the local stagnation of the lid at the boundary surface where the peeling proceeds is maintained at a predetermined target value so that the radius of curvature R is maintained at a predetermined target value.
- the lid end portion moving speed control mechanism having a function of controlling the moving speed is configured integrally, and for example, the following configuration can be selected.
- the lid peeling mechanism shown in FIG. 5 is a system in which the end of the lid is vacuum-sucked and then rolled up using a roller having a predetermined radius.
- the radius of curvature R which indicates the stagnation of the lid, is equal to the radius of the roller, and by making the winding speed constant, the moving speed of the lid end is also constant.
- the radius of the roller is changed and the winding speed is set according to the target value of the radius of curvature indicating the stagnation of the lid.
- the lid peeling mechanism shown in FIG. 6 is a method of pulling up after the end of the lid is chucked by the knob portion. At that time, the speed of lifting is selected according to the target value of the radius of curvature R that indicates the stagnation of the lid.
- the lid peeling mechanism shown in Fig. 7 is a system that lifts the end and both ends of the lid at the same time.
- the knob for moving the end of the lid is a system that pushes up the lower surface of the lid. At this time, the speed to be pushed up is selected according to the target value of the curvature radius R indicating the stagnation of the lid.
- the lid peeling mechanism shown in Fig. 8 is pulled after the end of the lid is chucked by the vacuum suction part. It is a method to raise. At that time, the speed to be pulled up is selected according to the target value of the curvature radius R indicating the stagnation of the lid.
- Control of the pulling speed is adjusted to a desired range by using the rotation angle of the pulling arm and the vertical movement speed of the column supporting the rotating shaft.
- the lid peeling mechanism shown in FIG. 9 is a method of pulling up after the end of the lid is chucked by the vacuum suction part. At that time, the speed to be pulled up is selected according to the target value of the curvature radius R indicating the stagnation of the lid.
- the lid peeling mechanism shown in Fig. 10 is also a method of pulling up after the end of the lid is chucked by the vacuum suction part. At that time, the speed to be pulled up is selected according to the target value of the curvature radius R indicating the stagnation of the lid.
- the lid peeling mechanism shown in FIG. 11 inserts a shovel-shaped guide portion having a predetermined slope angle from the end portion of the lid portion, and moves while lifting the end portion of the lid portion along the slope. It is a system to move. At this time, the curvature radius R indicating the stagnation is controlled by selecting the moving speed according to the target value of the curvature radius R indicating the stagnation of the lid.
- the radius of the circle inscribed in the slope of the slope and the upper surface of the substrate portion is a curvature radius R indicating the sag of the lid portion.
- the radius of curvature R which indicates the stagnation of the lid, decreases. If the moving speed is constant, the radius of curvature R is adjusted to indicate the sag determined by the conditions.
- the lid 113 separation of the lid 113 is completed while the separated sample such as electrophoresis in the frozen state is held in a state of being adhered to the back side of the lid 113. Then the lid isolated
- the portion is removed from the upper surface of the substrate portion by holding the end portion of the lid portion in a state of being chucked by the knob portion and moving the knob portion.
- the substrate is removed from the upper surface of the substrate portion by being moved while being held by the mechanism used for peeling.
- the adhesion state is maintained on the upper surface of the separated sample that is in contact with the lower surface of the lid portion 113, such as icing electrophoresis in the grooved channel.
- the peeling of the grooved channel on the wall surface proceeds, and as a result, the lid 113 is peeled off while a separated sample such as frozen electrophoresis is adhered to the lower surface of the lid 113.
- the separated lid part is held, the upper surface force of the substrate part is moved, the top and bottom surfaces of the upper part of the lid part are inverted, and the lower surface of the lid part is exposed to the surface.
- the reversing function is such that the end of the lid is held in the chucked state by the knob part, and the knob part is moved to remove the inversion from the upper surface of the substrate part.
- the reversing operation can be performed for each of the holding mechanisms while the end of the lid is chucked by the vacuum suction portion.
- the separated lid portion is separately held from the upper surface of the substrate portion by holding the end portion chucked by the knob portion and moving the knob portion, and performing reversal. It is possible.
- a separated sample such as electrophoresis in a state of maintaining this frozen state can be fractionated into a plurality of sections along the flow path.
- the electrophoretic-separated sample that is attached to the lower surface of the lid and that maintains the frozen state is sheared into the frozen body when the lower surface of the lid is held in a convex shape. Stress is applied. In that state, a sharp blade-shaped jig is brought into contact with the surface of the iced body to slightly When a slight stress is applied, fracture occurs at that site. When this breaking operation is performed at a predetermined interval, it can be divided into a plurality of sections along the flow path. Once the fractured and broken pieces are frozen, the lower surface of the lid portion can be peeled off when the lower surface of the lid portion is further curved into a convex shape with a small curvature radius. Therefore, it is possible to separate and separate individual ice pieces from the lower surface of the lid according to the method described above for each well of a fractionation plate (multi-well sample plate) having a plurality of wells.
- the frozen fragments recovered in each well of the fractionation plate (multi-well sample plate) by the transfer operation described above are separated into each fraction by re-dissolution treatment. It becomes a fractionated sample solution containing the protein and the like. It is preferable that the mechanism for carrying out the transfer and subsequent fraction re-dissolution treatment is selected in combination with the fractionation mechanism and incorporated in the automatic sample processing apparatus.
- the series of operations described above can be automated in each process, and the function of each mechanism is automatically performed according to a predetermined process program regarding the series of operations. It can be a fully automated process by the automatic operation control mechanism.
- sample analysis method when isoelectric focusing is used as an electrophoresis operation, a plurality of types of proteins contained in a liquid sample to be analyzed are maintained in their original holding state, They can be separated while maintaining their activity. Using this advantage, it is possible to confirm whether each fraction of a separated sample such as electrophoresis contains a protein exhibiting the desired activity based on the result of bioassay analysis.
- a protein component having a specific activity when combined with the method for analyzing a biosample according to the present invention, whether or not a protein component having a specific activity is actually contained in the liquid sample to be analyzed, It can be used as a “primary screening” tool to identify the molecular weight and isoelectric point of a protein component that exhibits a specific activity. [0099] (Microchip chemical analyzer)
- the microchip analysis analyzer that works on the present invention uses a flow path formed in a microchip with a lid for a liquid sample to be analyzed as a target sample. After performing separation operation such as desired electrophoresis, a plurality of substances contained in the liquid sample are formed along the flow path to form spot points, respectively, and separated by electrophoresis.
- separation operation such as desired electrophoresis
- spot points spot points
- the overall apparatus configuration is as follows: a chemical analysis unit 1 that analyzes the sample in the flow path of the microchip, and a solution fixing unit 2 for fixing the chemically analyzed sample 'electrophoretic solution'.
- a solution fixing unit 2 for fixing the chemically analyzed sample 'electrophoretic solution'.
- the lid part separating part 3 for separating the lid part from the substrate part is provided.
- individual members and mechanisms that are attached to the structure that can analyze the sample in the mouthpiece of the microphone, and attached mechanisms that are used when using a powerful sample for the subsequent analysis As far as the analysis in Chemical Analysis Department 1 is not affected, there is no particular limitation.
- the chemical analysis performed in the chemical analysis unit 1 in the present invention is not particularly limited, and examples thereof include separation by electrophoresis, and in particular, isoelectric focusing that can concentrate a sample at each isoelectric point.
- the chemical analysis unit 1 may be formed of an electrode unit and a migration power source. A voltage is supplied from the power supply for electrophoresis to the electrode part through the wiring, and the electrode part is used to apply a voltage to the electrophoresis solution in the flow path of the microchip for electrophoresis.
- a reservoir lid part can be further disposed on the lid part to suppress evaporation of the electrophoretic liquid in the flow path. Further, a part of a current monitor that monitors the current value when a voltage is applied may be provided.
- the chemical analysis unit 1 may include a moving mechanism that automatically moves the liquid storage lid part and the electrode part to a predetermined position.
- These accessory mechanisms can be used alone, in combination, or in combination of multiple types! /.
- the solution fixing unit 2 in the present invention is not particularly limited.
- the chemical analysis unit 1 Samples chemically analyzed in 'Use a cooling mechanism that freezes the electrophoresis solution and fixes it.
- the cooling mechanism in the present invention is preferably of a type that cools by directly contacting the substrate portion of the microchip.
- a secondary cooling mechanism that cools the lid side force may also be provided via the liquid storage foot unit.
- a cooling mechanism using a Peltier element or a chiller can be cited.
- the lid separating unit 3 in the present invention includes a mechanism for adsorbing, contacting or fixing the lid, a mechanism for adsorbing, contacting or fixing the substrate, and the fixed lid and the substrate. And a moving mechanism that moves away relatively.
- the mechanism for adsorbing, contacting, or fixing the lid in the present invention is not particularly limited, and may be, for example, an adsorption unit that adsorbs the lid to the fixing mechanism by decompression. It may be an adhesive part 12 that adheres to the fixing mechanism, or may be a lid fixing part that contacts or fixes the lid part to the fixing mechanism.
- the mechanism for adsorbing, contacting or fixing the substrate portion in the present invention is not particularly limited.
- the substrate portion may be a substrate portion adsorbing portion that adsorbs the substrate portion to the fixing mechanism by decompression.
- the substrate portion may be a substrate portion adhesive portion that adheres to the fixing mechanism, or may be a substrate portion fixing portion that contacts or fixes the substrate portion to the fixing mechanism.
- the usable lid suction part and substrate part suction part have a suction hole and a pressure reducing mechanism for reducing the pressure through the suction hole, and can suck an object approaching the suction hole.
- the moving mechanism for moving the fixed lid portion and the substrate portion relatively far apart in the present invention is not particularly limited.
- the substrate portion or a chip stage portion that moves the lid portion up and down may be used. Opening and closing to open and close with the axis of rotation as the center of rotation, even if it is a roller part that rotates and winds up the lid part or pinches the lid part or substrate part, or even if it is a knob part or hook part that moves up and down Part.
- the microchip analysis analyzer of the present invention further includes a lid portion for bonding the microchip, a substrate portion bonding mechanism, and a sample for injecting the electrophoresis solution into the microchip flow path as necessary.
- a solution injection mechanism can be provided.
- a signal detection unit for detecting the progress or result of the chemical analysis performed in the microchip can be provided.
- the lid part / substrate part joining mechanism in the present invention is not particularly limited, but for example, a positioning guide for projections, depressions, holes, pins, etc. designed to fit the shape of the microchip, A holder that holds the microchip, a moving mechanism that places the substrate portion and the lid portion in a predetermined position, and presses the substrate portion and the lid portion to increase the adhesion and join them together can be raised. .
- a positioning guide for projections, depressions, holes, pins, etc. designed to fit the shape of the microchip
- a holder that holds the microchip
- a moving mechanism that places the substrate portion and the lid portion in a predetermined position, and presses the substrate portion and the lid portion to increase the adhesion and join them together can be raised.
- These may be one type, a plurality, or a combination of a plurality of types.
- the solution injection mechanism in the present invention is not particularly limited.
- a pressure reduction mechanism that introduces a solution by generating a differential pressure at openings located at both ends of the microchip channel, a pressure mechanism, or the like Is given.
- the signal detection unit in the present invention is not particularly limited, but may include, for example, a light irradiation unit.
- the signal detection unit has at least a photodetector in order to measure optical wavelength signals such as absorption wavelength and fluorescence in the flow path. For example, excitation light is irradiated to the flow path from the light irradiation unit, and fluorescence is detected using the signal detection unit.
- This signal detection unit may be used when the chemical analysis unit 1 is used to analyze the sample, or after the analysis, the solution fixing unit 2 is used to fix the solution.
- the microchip analysis analyzer of the present invention may be one type, a plurality, or a combination of a plurality of types of the present configuration described above.
- the microchip analysis analyzer of the present invention preferably further includes a control unit in terms of ease of operation.
- the control unit can be used to monitor the current value using the current monitoring unit and control the voltage supplied to the power supply. Furthermore, the control unit can also use the current value monitor, the voltage application time, and the power consumption power to determine the end of the chemical analysis and to control the operation of the cooling mechanism. Further, the control unit is configured to adsorb, contact or fix the lid part, the mechanism to adsorb, contact or fix the substrate part, and the fixed lid part and the substrate part to move relatively away from each other. It can be used to control the operation of the moving mechanism and expose the flow path.
- control unit uses a lid part 'substrate part joining mechanism to control a moving mechanism that joins the lid part and the substrate part, and a solution injection mechanism to reduce the pressure' pressurizing mechanism that generates a differential pressure.
- a lid part 'substrate part joining mechanism to control a moving mechanism that joins the lid part and the substrate part
- a solution injection mechanism to reduce the pressure' pressurizing mechanism that generates a differential pressure.
- the microchip analysis analyzer according to the present invention may further include a lid reversing unit.
- the lid reversing part is a mechanism that rotates the lid part separated by the substrate part force using the lid separating part 3 and reverses the top and bottom.
- the chemical analysis unit 1 is used to chemically analyze the sample in the flow path, and then the solution fixing unit 2 is used to fix the electrophoresis solution and the sample.
- the solution fixing part 2 is a cooling mechanism and freezes and fixes the sample 'electrophoresis solution'.
- the lid part is separated from the substrate part using the lid part separation part 3. Adhere the exposed frozen sample 'electrophoresis solution' to this lid side, and then hold the frozen sample 'electrophoresis solution adhering side surface, which was the lower surface of the lid portion, using the lid inversion unit. can do.
- the lid reversing part comes into contact with the lid part, it is preferable that it is cooled before it comes into contact with the lid part so as not to cause dissolution of the frozen sample or electrophoresis solution adhering to the lid part! /.
- the frozen sample the material of the substrate part of the microchip, the structure of the flow path', the surface properties, the selection of the lid member quality, and the surface structure are used to attach the frozen sample to the lid side. It is necessary to select the components of the solution.
- the cross-sectional shape of the flow path may be a semicircular shape or a downward triangular shape.
- the total sum of the projected area of the channel wall surface on the surface perpendicular to the channel upper surface of the channel wall surface is less than 0.5 times the surface area where the lid contacts the solution in the channel.
- the total sum of the projected area of the flow path wall surface on the surface perpendicular to the flow path upper surface is, for example, when the side surface of the flow path wall is an inclined surface or a vertical surface with respect to the upper surface, This means the area obtained by integrating the projected area along the outer periphery of the convex structure when projected onto a plane perpendicular to the upper surface.
- To reduce the surface energy of the channel surface May be a smooth plastic resin having a small surface energy, a silicone resin, a fluorine resin, an acrylic resin, a polypropylene, a polyolefin, or the like.
- a substrate material having a large surface energy the above material having a small surface energy may be surface coated.
- the lid material has a high surface energy!
- the plating metal may be made of glass or the like, and in order to increase the frictional resistance between the lid surface and the solution, the lid surface may have minute irregularities.
- FIG. 3 is a diagram schematically showing an outline of an apparatus for performing isoelectric point separation as an example of an embodiment of the microchip analysis analyzer of the present invention.
- the sample is chemically analyzed by isoelectric point separation, the sample 'electrophoresis solution is fixed by freeze fixation, the lid portion is separated, and the freeze-fixed sample' electrophoresis solution is placed on the lid side. Adhere to and expose.
- the microchip includes a substrate part 103 having a flow channel structure and a lid part 113 having a hole structure serving as a liquid reservoir.
- the substrate unit 103 is placed on the chip base along the chip 'guide.
- the chip base is composed of a Peltier, a suction hole, and a moving mechanism.
- Peltier is also used as a cooling mechanism for cooling the microchip.
- the suction hole is connected to a vacuum pump, and is fixed by sucking the substrate portion 103 onto the chip base.
- the moving mechanism is used as a moving mechanism that moves the lid portion and the substrate portion away from each other. It is also used as a lid / substrate joint mechanism.
- the lid portion 113 is installed on the lid base along the lid 'guide.
- the lid base is integrated with the lid guide, and also functions as a lid fixing mechanism.
- the liquid storage lid is placed on the lid 113.
- the liquid reservoir lid portion has an electrode portion and an adsorption hole on the lower surface, and this electrode portion is disposed in the liquid reservoir portion of the lid portion 113.
- the suction hole is used for adsorbing the liquid storage lid part and the lid part 113 by reducing the pressure through the suction hole.
- the liquid storage lid should be It is equipped with a Peltier bowl that is used as a cooling mechanism.
- the liquid reservoir lid part is provided with a moving mechanism, which functions as a moving mechanism for moving the liquid reservoir lid part to a predetermined position, as a moving mechanism for relatively moving the lid part and the substrate part away from each other. Part 'Used as a board part bonding mechanism.
- the chip stage on which the substrate unit 103 is installed is raised by a moving mechanism, whereby the base plate unit 103 is pressed against the lid unit 113 to join the microchip. Thereafter, the position of the chip base is maintained as it is.
- the liquid reservoir lid part also moves the force on the lid 113 to expose the liquid reservoir part of the microchip.
- 2% ampholite an amphoteric carrier
- the substrate section 103 glass was used for the substrate section 103, and the channel width was 100 / zm and the channel depth was m. Silicone resin was used for the lid 113. In this case, by pressing the substrate part 103 against the lid part 113, the frozen sample 'electrophoretic solution can be more reliably attached to the lid side. Can do.
- the substrate portion 103 is attached to the lid portion 113.
- the frozen sample and the electrophoresis solution can be attached to the lid 113 side without fail.
- Frozen sample has the advantage of being solid and easy to handle. Therefore, the frozen sample / electrophoresis solution can be individually divided and moved to a predetermined position for further processing.
- a microchip with a lid for analysis according to the present invention, a sample processing method using the same, an automatic sample processing method, and an automatic sample processing apparatus for a microchip with a lid for analysis have been subjected to electrophoresis separation processing It can be used to improve the reproducibility of the sample preparation process for further analysis using samples, for example, bioassay and chemical assay analysis.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Electrochemistry (AREA)
- Dispersion Chemistry (AREA)
- Clinical Laboratory Science (AREA)
- Hematology (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Sampling And Sample Adjustment (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007502652A JP4632064B2 (ja) | 2005-02-10 | 2006-02-10 | 分析用の蓋付きマイクロチップ、該蓋付きマイクロチップのサンプル処理方法、該蓋付きマイクロチップの自動サンプル処理方法、該処理方法に基づく、自動サンプル処理装置、ならびに、該自動サンプル処理方法を応用する物質の分析装置 |
US11/815,934 US20090221092A1 (en) | 2005-02-10 | 2006-02-10 | Lidded microchip for analysis, sample processing method for the lidded microchip, automatic sample processing method for the lidded microchip, automatic sample processing apparatus based on the processing method, and substance analyzing apparatus to which the automatic sample processing method is applied |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005034821 | 2005-02-10 | ||
JP2005-034821 | 2005-02-10 | ||
JP2006-026889 | 2006-02-03 | ||
JP2006026889 | 2006-02-03 |
Publications (1)
Publication Number | Publication Date |
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WO2006085604A1 true WO2006085604A1 (ja) | 2006-08-17 |
Family
ID=36793175
Family Applications (1)
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PCT/JP2006/302333 WO2006085604A1 (ja) | 2005-02-10 | 2006-02-10 | 分析用の蓋付きマイクロチップ、該蓋付きマイクロチップのサンプル処理方法、該蓋付きマイクロチップの自動サンプル処理方法、該処理方法に基づく、自動サンプル処理装置、ならびに、該自動サンプル処理方法を応用する物質の分析装置 |
Country Status (3)
Country | Link |
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US (1) | US20090221092A1 (ja) |
JP (1) | JP4632064B2 (ja) |
WO (1) | WO2006085604A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008076271A (ja) * | 2006-09-22 | 2008-04-03 | Fujifilm Corp | 測定装置およびその測定方法 |
JPWO2006085539A1 (ja) * | 2005-02-10 | 2008-06-26 | 日本電気株式会社 | バイオ分析用の蓋シール付きマイクロチップの自動サンプル処理方法、及び自動サンプル処理装置 |
US20130224878A1 (en) * | 2010-07-26 | 2013-08-29 | Randox Laboratories Ltd. | Biochip well, sealed well assembly, cartridge therefor, and apparatus and methods for opening sealed wells |
CN112967988A (zh) * | 2020-11-04 | 2021-06-15 | 重庆康佳光电技术研究院有限公司 | 一种微元件的转移装置及其方法 |
Families Citing this family (3)
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KR101637711B1 (ko) | 2014-10-30 | 2016-07-07 | 현대자동차주식회사 | 연료전지의 고분자 전해질막-전극 접합체용 전극의 분리방법과 그 장치 |
WO2019064367A1 (ja) * | 2017-09-27 | 2019-04-04 | シャープ株式会社 | 表示デバイスの製造方法、表示デバイスの製造装置 |
GB2568480A (en) * | 2017-11-16 | 2019-05-22 | Owlstone Inc | Method of manufacture for a ion mobility filter |
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- 2006-02-10 JP JP2007502652A patent/JP4632064B2/ja not_active Expired - Fee Related
- 2006-02-10 US US11/815,934 patent/US20090221092A1/en not_active Abandoned
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JPH10509434A (ja) * | 1994-10-26 | 1998-09-14 | フラウンホーフアー−ゲゼルシヤフト ツール フエルデルング デル アンゲバンテン フオルシユング エー フアウ | 生物学的物質の凍結保存と低温処理方法 |
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JPWO2006085539A1 (ja) * | 2005-02-10 | 2008-06-26 | 日本電気株式会社 | バイオ分析用の蓋シール付きマイクロチップの自動サンプル処理方法、及び自動サンプル処理装置 |
JP4687920B2 (ja) * | 2005-02-10 | 2011-05-25 | 日本電気株式会社 | バイオ分析用の蓋シール付きマイクロチップの自動サンプル処理方法、及び自動サンプル処理装置 |
JP2008076271A (ja) * | 2006-09-22 | 2008-04-03 | Fujifilm Corp | 測定装置およびその測定方法 |
US20130224878A1 (en) * | 2010-07-26 | 2013-08-29 | Randox Laboratories Ltd. | Biochip well, sealed well assembly, cartridge therefor, and apparatus and methods for opening sealed wells |
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US10751720B2 (en) | 2010-07-26 | 2020-08-25 | Randox Laboratories Ltd. | Biochip well, sealed well assembly, cartridge therefor, and apparatus and methods for opening sealed wells |
CN112967988A (zh) * | 2020-11-04 | 2021-06-15 | 重庆康佳光电技术研究院有限公司 | 一种微元件的转移装置及其方法 |
CN112967988B (zh) * | 2020-11-04 | 2022-07-29 | 重庆康佳光电技术研究院有限公司 | 一种微元件的转移装置及其方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4632064B2 (ja) | 2011-02-16 |
JPWO2006085604A1 (ja) | 2008-06-26 |
US20090221092A1 (en) | 2009-09-03 |
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