WO2005118772A1 - 核酸増幅用容器、核酸調製キット、および核酸分析装置 - Google Patents
核酸増幅用容器、核酸調製キット、および核酸分析装置 Download PDFInfo
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- WO2005118772A1 WO2005118772A1 PCT/JP2005/010080 JP2005010080W WO2005118772A1 WO 2005118772 A1 WO2005118772 A1 WO 2005118772A1 JP 2005010080 W JP2005010080 W JP 2005010080W WO 2005118772 A1 WO2005118772 A1 WO 2005118772A1
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- WIPO (PCT)
- Prior art keywords
- nucleic acid
- lid
- extraction element
- container
- amplification
- Prior art date
Links
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Classifications
-
- 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
- B01L3/50851—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 specially adapted for heating or cooling samples
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/02—Adapting objects or devices to another
- B01L2200/026—Fluid interfacing between devices or objects, e.g. connectors, inlet details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/16—Reagents, handling or storing thereof
Definitions
- the present invention relates to a technique for amplifying a target nucleic acid contained in a sample, and a technique for analyzing the amplified target nucleic acid.
- nucleic acid analysis plays an important role in diagnosing infectious diseases and genetic diseases at the genetic level in the medical field. It is applied in various fields such as the food field.
- nucleic acid analysis is performed through processes such as purification of nucleic acid from a sample, amplification of purified nucleic acid, and detection of amplified nucleic acid.
- Each process should be automated by the machine, considering human costs, reproducibility and analytical efficiency Ideally, all processes should be automated by the machine (See, for example, Patent Documents 1 and 2).
- nucleic acid-binding carrier As a method for automatic mechanization of nucleic acid purification, there is a method using a nucleic acid-binding carrier.
- a method using nucleic acid-binding silica particles and chaotropic ions for example, see Patent Document 3.
- nucleic acid binding silica particles and chaotropic ions capable of releasing nucleic acids in the sample are mixed with the sample to bind the nucleic acids in the sample to the nucleic acid binding silica particles, and then the solid phase and the liquid phase are separated. After that, the nucleic acids bound to the nucleic acid-binding silica particles are eluted.
- nucleic acid binding carrier there is a method using a carrier having magnetism (for example, see Patent Documents 4 and 5).
- this method there is a method in which nucleic acids are adsorbed on silica particles having magnetism, the silica particles are separated by a magnet, and the separated silica particles are eluted with a nucleic acid to recover an eluate.
- This method has an advantage over mechanical automation because the solid phase and the liquid phase can be separated without performing a centrifugation operation or the like.
- the recovery rate of nucleic acids is relatively low and the recovery rate is easily affected by the type of specimen.
- magnetic silica particles can be an inhibitor of amplification reaction when PCR (Polymerase Chain Reaction) method is employed as a nucleic acid amplification method.
- a typical method for detecting nucleic acids is to label nucleic acids and measure the labels by an optical method.However, when this method is used, magnetic silica causes measurement errors. In addition, the reproducibility deteriorates due to the variation in the content of the magnetic silica particles during the purification.
- a typical method for amplifying nucleic acids is the PCR method.
- Amplification of nucleic acids using the PCR method is being automated by a machine, and PCR devices are already commercially available.
- a PCR device a device capable of detecting the amplified nucleic acid together with the amplification of the nucleic acid is generally used.
- a general amplification kit is one in which primers and reagents such as polymerase are charged in a container with a lid in advance. Therefore, after opening the lid of the container, the user dispenses the nucleic acid solution into the container, stirs the reaction solution in the container, closes the lid, and then sets the operation when setting it in the PCR device. Be strong. That is, a general amplification kit has a large part that depends on the user's manual operation, and therefore the burden on the user is large. In addition, since the manual operation by the user is greatly involved, the user's skill is low in analysis efficiency.
- the container used in the amplification kit is generally a general-purpose product in which a lid is integrally formed by resin molding, and it is difficult to automatically open and close the lid in a PCR device. Therefore, it is difficult for a method using a general dedicated kit to automatically perform the operation left to the user's manual operation in the PCR device.
- a pipette device for dispensing a liquid such as a reagent or a sample is incorporated.
- This pipette device is configured so that the nozzle can be moved horizontally and vertically by a robot arm depending on the type of the analyzer (for example, see Patent Document 6).
- nucleic acid analyzer In automating the analysis, it may be necessary to move elements other than the nozzle of the pipetting device inside the analyzer. In this case, a plurality of movable elements including the nozzle must be incorporated in the nucleic acid analyzer so that they can move without interfering with each other, and the movable elements must be independently driven and controlled. Therefore, incorporating a plurality of movable elements into the nucleic acid analyzer leads to an increase in the size of the nucleic acid analyzer and an increase in manufacturing cost.
- Patent Document 1 JP 2001-149097 A
- Patent Document 2 JP-A-2003-304899
- Patent Document 3 Patent No. 2680462
- Patent Document 4 JP-A-60-1564
- Patent Document 5 JP-A-919292
- Patent Document 6 JP-A-2002-62302
- the present invention enables a series of steps in nucleic acid analysis such as nucleic acid purification, nucleic acid amplification and nucleic acid measurement to be performed automatically by a machine, thereby reducing user burden and improving analysis efficiency and reproducibility. For the purpose of doing! Puru.
- Another object of the present invention is to enable automatic analysis in a nucleic acid analyzer while suppressing an increase in the size of the apparatus and an increase in manufacturing cost.
- a container main body having a reaction tank for allowing a target nucleic acid and an amplification reagent to react with each other is set in a nucleic acid analyzer and used,
- a container for nucleic acid amplification comprising: a lid for closing an upper opening of a reaction tank and capable of being completely separated from the container body.
- a container for extracting a target nucleic acid from a sample which is used in a nucleic acid analyzer, and a container for amplifying the target nucleic acid
- a container for nucleic acid amplification comprising: a container body having a reaction tank for reacting a target nucleic acid with an amplification reagent; and an upper opening of the reaction tank.
- a nucleic acid preparation kit comprising: a lid for closing the container; and a lid capable of being completely separated from the container body.
- the lid is, for example, capable of being screwed into the reaction tank, and is detachably attached to the reaction tank by applying a rotating force.
- the nucleic acid analyzer has a rotating member for applying a rotating force to the lid
- the lid engages with the rotating member and enables the rotating member to apply the rotating force. Having an engaging portion for engaging.
- the engaging portion has, for example, a cylindrical concave portion into which a rotating member is inserted.
- a plurality of ribs extending in the vertical direction are provided at regular intervals in the circumferential direction. It is.
- the ribs are preferably formed such that the width dimension becomes smaller as the upper end portion moves toward the upper end.
- the lid may be configured to have a protruding portion used when the lid is held by the rotating member.
- the protruding portion is formed, for example, as a flange protruding outward.
- the nucleic acid purification container is formed, for example, as a separate body from the nucleic acid extraction element for extracting the target nucleic acid from the sample and supporting the extracted nucleic acid, and containing the nucleic acid extraction element. And a container body having a storage tank for storing.
- the nucleic acid extraction element and the lid are preferably configured as holding means for holding the nucleic acid extraction element with respect to the lid and allowing the nucleic acid extraction element to move integrally with the lid. preferable.
- the holding means is provided, for example, on an engaging convex portion or a concave portion provided on one of the nucleic acid extraction element and the lid, and on the other of the nucleic acid extracting element and the lid and on the engaging convex portion or the concave portion. And one or more claws for engagement.
- the nucleic acid extraction element and the lid are provided with a guide mechanism for regulating the positional relationship of the lid with respect to the nucleic acid extraction element when the lid holds the nucleic acid extraction element.
- the guide mechanism is configured to include, for example, a pin provided on one of the nucleic acid extraction element and the lid, and an insertion hole provided on the other of the nucleic acid extraction element and the lid and for inserting a pin. Is done.
- the nucleic acid extraction element includes, for example, a solid matrix for supporting a target nucleic acid and the solid matrix. And a holding member for holding the body matrix.
- the nucleic acid amplification container is preferably configured such that when the nucleic acid extraction element is removed from the storage tank and stored in the reaction tank, the solid matrix is separated from the bottom of the reaction tank.
- the holding member is provided with a sealing member for forming a sealed space in the reaction tank when, for example, the nucleic acid extraction element is accommodated in the reaction tank with the nucleic acid extraction element held by the lid.
- the sealing member is fixed above the portion where the solid matrix is held.
- the holding member is configured to have, for example, a protruding portion for engaging with a step portion of the reaction tank.
- the protruding portion is formed, for example, as a flange protruding outward.
- the holding member is provided for engaging the transfer member. It is configured to have an engagement portion, and the protrusion is configured to be used to release the engagement state between the transfer member and the holding member.
- the nucleic acid analyzer further includes a cylindrical member that covers the transfer member and that can move relative to the transfer member in the vertical direction, the projecting portion includes the cylindrical member as the transfer member. It is configured such that a downward force is exerted by the interference of the cylindrical member when it is moved relatively downward.
- the solid matrix is held on the holding member, for example, in a state inclined with respect to the vertical axis of the holding member, and is preferably held horizontally or substantially horizontally with respect to the vertical axis.
- the solid matrix is preferably formed in a disk shape.
- the state in which the solid matrix is inclined with respect to the vertical axis can be achieved, for example, by piercing the holding member with respect to the solid matrix.
- the holding member has, for example, a tapered portion whose diameter decreases toward the end, a tapered portion force is extended, and a pin-shaped portion for penetrating the solid matrix, and the solid matrix is separated from the pin-shaped portion. And a locking piece for suppressing rusting.
- the solid matrix may be held by the holding member in a state parallel or substantially parallel to the vertical axis of the holding member.
- the solid matrix is formed into a sheet. Is preferred.
- the state where the solid matrix is parallel or substantially parallel to the vertical axis can be achieved, for example, by suspending the solid matrix with respect to a holding member.
- the holding member is configured to have, for example, a holding portion for holding the solid matrix by holding the end of the solid matrix.
- the container for nucleic acid extraction further comprises, for example, one or more washing tanks for holding a washing solution for removing impurities other than the target nucleic acid from the nucleic acid extraction element.
- the nucleic acid amplification container is configured as further provided with one or more reagent holding tanks for holding reagents necessary for amplifying the target nucleic acid.
- a nucleic acid amplification apparatus in which a container for nucleic acid amplification is set and used, wherein the container for nucleic acid amplification comprises a reaction for reacting a target nucleic acid with an amplification reagent. It is configured to use a container body having a tank and a lid for closing an upper opening of the reaction tank and capable of being completely separated from the container body.
- a nucleic acid amplification device is provided in which a container for nucleic acid amplification is set and used, wherein the container for nucleic acid amplification comprises a reaction for reacting a target nucleic acid with an amplification reagent. It is configured to use a container body having a tank and a lid for closing an upper opening of the reaction tank and capable of being completely separated from the container body.
- a nucleic acid amplification device Provided is a nucleic acid amplification device.
- a nucleic acid analyzer for preparing a target nucleic acid from a sample using a container for nucleic acid extraction and a container for nucleic acid amplification and for analyzing the target nucleic acid
- the container for nucleic acid amplification has a reaction vessel that provides a space for amplifying the target nucleic acid using the nucleic acid extraction element holding the target nucleic acid extracted from the sample cap, and an upper part of the reaction vessel.
- a nucleic acid analyzer configured to use a device having a lid for closing an opening.
- the nucleic acid analyzer according to the present invention is preferably configured to further include a lid attaching / detaching means for attaching / detaching the lid.
- a lid attaching / detaching means for attaching / detaching the lid.
- a nucleic acid amplification container having a lid screwed into the reaction tank and made detachable from the reaction tank by applying a rotational force to the lid is used. It is configured to In this case, the lid attaching / detaching means is configured to have a rotating member for applying a rotational force to the lid.
- the lid is provided at the tip of the rotating member. It is provided with an engaging portion having a cylindrical concave portion for insertion, and a plurality of ribs extending upward and downward are provided on the inner peripheral surface of the concave portion at regular intervals in the circumferential direction.
- the rotating member is configured to have a plurality of convex portions for positioning between the mutually adjacent ribs of the plurality of ribs of the lid when the distal end portion is inserted into the concave portion. Are formed so as to extend in the up-down direction, and to have a width dimension decreasing toward the lower end.
- the nucleic acid analyzer is configured to use, for example, a nucleic acid amplification container provided with a protruding portion whose lid protrudes outward.
- the lid attaching / detaching means has an engaging claw for engaging with the protruding portion, and the lid can be moved at least vertically in a state where the engaging claw is engaged with the protruding portion. Be composed.
- the lid attaching / detaching means moves, for example, the lid from which the reaction vessel was also removed, and puts it in the storage tank
- the retained nucleic acid extraction element is held by the lid to take out the nucleic acid extraction element from the storage tank, and the nucleic acid extraction element is moved together with the lid. Is operated so as to close the.
- the lid attaching / detaching means includes a fitting element for fitting into the concave portion, and an outer cover for the fitting element. And a tubular element having a claw portion for engaging with the flange portion.
- the nucleic acid analyzer of the present invention can also be configured as provided with a transfer member for taking out the nucleic acid extraction element from the storage tank and transferring it to the reaction tank.
- the embodiment further includes a tubular member that covers the transfer member and that can move vertically relative to the transfer member.
- the tubular member is configured such that the nucleic acid extraction element integrated with the transfer member can be removed when the cylindrical member moves downward relative to the transfer member.
- the nucleic acid analyzer of the present invention is configured as further provided with, for example, control means for controlling operations of the transfer member and the lid attaching / detaching means.
- the control means removes the lid of the reaction vessel by a rotating member, and then rotates the lid holding the lid from a position immediately above the reaction vessel.
- the step of retracting the member, the step of taking out the nucleic acid extraction element by the transfer member and moving the nucleic acid extraction element into the reaction tank, and the step of removing the transfer element force by the cylindrical member It is configured to perform the steps of: accommodating a nucleic acid extraction element; and attaching a lid to the reaction vessel by a rotating member.
- the transfer member may be a container for nucleic acid amplification.
- a nozzle used for dispensing or mixing a plurality of reagents can be used.
- the nozzle is configured, for example, to suck and discharge the liquid with the chip mounted thereon. V, while the chip is mounted! It is configured to retrieve More specifically, while the tip is fitted to the nozzle by fitting the tip to the chip, for example, the tip of the nozzle is fitted to the concave portion provided in the nucleic acid extraction element, so that the accommodation tank force is increased. Configured to extract extracted elements
- the embodiment further includes a tubular member that covers the nozzle and that can move vertically relative to the nozzle.
- the cylindrical member is configured such that the tip or the nucleic acid extraction element fitted with the tip of the nozzle can be removed when the cylindrical member moves downward relative to the nozzle.
- the nucleic acid extraction element an element provided with a protrusion for interfering with the cylindrical member when removing the nucleic acid extraction element from the nozzle force. It is preferable that an O-ring is attached to the tip of the nozzle at a portion to be fitted to the chip or the nucleic acid extraction element.
- the "sample” is a concept including biological samples derived from animals (eg, whole blood, serum, plasma, urine, saliva, or body fluid) and biological samples other than animals.
- the term “acid” refers to DNA or RNA, including double-stranded DNA, single-stranded DNA, plasmid DNA, genomic DNA, cDNA, RNA from exotic parasites (viruses, bacteria, fungi, etc.), and endogenous RNA. It is a concept that includes.
- FIG. 1 is an overall perspective view for explaining an example of a nucleic acid analyzer.
- FIG. 2 is a plan view showing the internal configuration of the nucleic acid analyzer shown in FIG. 1.
- FIG. 3 is a sectional view taken along the line III-III in FIG. 2.
- FIG. 4 is a sectional view taken along the line IV—IV in FIG. 1.
- FIG. 5 is an overall perspective view showing an example of a cartridge for nucleic acid purification.
- FIG. 6 is a sectional view taken along the line VI—VI in FIG.
- FIG. 7A is an overall perspective view of a nucleic acid extraction element in a nucleic acid purification cartridge
- FIG. 7B is a cross-sectional view of the nucleic acid extraction element.
- FIG. 8 is an overall perspective view of a nucleic acid amplification cartridge.
- FIG. 9 is a sectional view taken along line IX-IX in FIG.
- FIG. 10 is a fragmentary cross-sectional view for explaining the operation of cleaning the solid matrix.
- FIG. 11 is a fragmentary cross-sectional view showing the operation of removing the lid from the nucleic acid amplification cartridge.
- FIG. 12 is a cross-sectional view of a lumbar region for explaining an operation of taking out a diffusion nucleic acid extraction element using a lid.
- FIG. 13A is a sectional view of an essential part for explaining an operation of accommodating a nucleic acid extraction element in a reaction vessel of a nucleic acid amplification cartridge
- FIG. 13B is a view for explaining an operation of removing a lid from the reaction vessel. It is principal part sectional drawing.
- FIG. 14 is a sectional view taken along lines XIV-XIV in FIG. 13B.
- FIG. 15 is a cross-sectional view corresponding to a cross-section taken along line XV-XV in FIG. 2 for explaining a temperature control mechanism and a measurement mechanism.
- FIG. 16 is a plan view showing an internal configuration for explaining an example of the nucleic acid analyzer.
- FIG. 17 is a sectional view taken along lines XVII-XVII in FIG.
- FIG. 18 is a sectional view taken along the line XVIII—XVIII in FIG.
- FIG. 19 is an overall perspective view showing an example of a cartridge for nucleic acid purification.
- FIG. 20A is a perspective view showing a nucleic acid extraction element in a nucleic acid purification cartridge.
- FIG. 20B is a plan view thereof, and FIG. 20C is a sectional view taken along the line XXc-XXc in FIG. 20A.
- FIG. 21 is a cross-sectional view corresponding to a cross section taken along line XXI-XXI of FIG. 19 in the container of the cartridge for nucleic acid purification.
- FIG. 22 is an essential part cross-sectional view showing the operation of taking out the nucleic acid extraction element also from the container in the container.
- FIG. 23 is an overall perspective view of a cartridge for nucleic acid amplification.
- FIG. 24A is a cross-sectional view taken along the line XXIVa-XXIVa of FIG. 23, and FIG. 24B is a cross-sectional view of FIG. 24A showing a state where a lid is separated.
- FIG. 25 is a front view of an essential part for describing an operation of attaching a chip to a nozzle.
- FIG. 26 is a fragmentary front view for explaining the operation of attaching the nucleic acid extraction element to the nozzle.
- FIG. 27 is a front view of the main part for describing the detaching operation of the tip with a strong nozzle.
- Fig. 28 is a front view of the essential parts for explaining the detachment operation of the nucleic acid extraction element with a nozzle force.
- FIG. 29 is a fragmentary cross-sectional view showing the operation of inserting the rotating member into the lid of the nucleic acid amplification cartridge.
- FIG. 30 is a fragmentary cross-sectional view for explaining the operation of removing the lid of the nucleic acid amplification cartridge.
- FIG. 31 is a cross-sectional view of relevant parts showing the operation of housing the nucleic acid extraction element in the reaction tank of the nucleic acid amplification cartridge.
- FIG. 32 is a cross-sectional view of principal parts for describing the operation of reattaching the lid of the nucleic acid amplification cartridge.
- FIG. 33 is a cross-sectional view corresponding to a cross-section taken along the line XXXIII-XXXIII of FIG. 16 for explaining the measurement mechanism.
- FIG. 35 is a graph showing the measurement results of the fluorescence intensity in Example 2 (ICAN method), in which the horizontal axis represents the number of cycles and the vertical axis represents the fluorescence intensity.
- FIG. 36 is a graph showing the measurement results of the fluorescence intensity in Example 3 (LAMP method), in which the horizontal axis represents the number of cycles and the vertical axis represents the fluorescence intensity.
- the nucleic acid analyzer 1 shown in Figs. 1 to 4 is configured to automatically purify nucleic acids in a sample, amplify extracted nucleic acids, and analyze the amplified nucleic acids.
- a plurality of cartridges for nucleic acid purification 2 and a plurality of cartridges for nucleic acid amplification 3 are mounted in the housing 10 in the same number.
- the nucleic acid purification cartridge 2 is for enabling automatic nucleic acid purification in the nucleic acid analyzer 1, and includes the nucleic acid extraction element 20 and the cartridge body. Has 21.
- the nucleic acid extraction element 20 is used for extracting a nucleic acid from a sample, and is housed in a housing tank 27 of the cartridge body 21 described later.
- This nucleic acid extraction element 20 has a holding member 22 and a solid matrix 23, as best seen in FIGS. 7A and 7B.
- the holding member 22 has a tubular portion 24, a flange portion 25, and a holding portion 26, and is entirely formed by resin molding, for example.
- the cylindrical portion 24 is a portion used when moving the nucleic acid extraction element 20 (see Figs. 4 and 12), and has a concave portion 24A and a locking head 24B.
- the recess 24A is for fitting an insertion pin 50 of the nucleic acid purification mechanism 5 described later or a pin 36B of the lid 31 of the nucleic acid amplification cartridge 3 (see FIGS. 4 and 12).
- the locking head 24B is for fitting a locking claw 36A in the lid 31 of the nucleic acid amplification cartridge 3 described later, and protrudes in the radial direction.
- the flange portion 25 is for engaging the step 27A of the storage tank 27 when the nucleic acid extraction element 20 is stored in the storage tank 27 of the nucleic acid purification cartridge 2 described later, and is provided in the radial direction. Formed in an annular shape protruding outward! (See Figure 12).
- the holding portion 26 is a portion for holding the solid matrix 23, and has a tapered portion 26A, a pin-shaped portion 26B, and a locking piece 26C.
- the tapered portion 26A plays a role of facilitating the downward movement of the cleaning liquid attached to the holding portion 26.
- Pin-shaped part 26B is fixed This is a part for penetrating the body matrix 23.
- the locking piece 26C is for preventing the solid matrix 23 from being detached from the pin-shaped portion 26B (holding portion 26) when the pin-shaped portion 26B is penetrated through the solid matrix 23.
- An O-ring 22A is fixed to the holding member 22 slightly above the holding portion 26.
- This O-ring 22A is for bringing the nucleic acid extraction element 20 into close contact with the inner surface of the reaction vessel 34 when the nucleic acid extraction element 20 is accommodated in the reaction vessel 34 of the nucleic acid amplification cartridge 3, as is clearly shown in FIG. 13B.
- the solid matrix 23 is for supporting nucleic acids in a sample, and is configured, for example, such that filter paper supports reagents for nucleic acid extraction.
- This solid matrix 23 is formed in a disk shape. That is, the solid matrix 23 is supported horizontally or substantially horizontally so as to be orthogonal to the vertical axis of the holding member 22 while being pierced by the pin-shaped portion 26B.
- the reagents for nucleic acid extraction include, for example, a combination of a weak base, a chelating reagent, an anionic surfactant or an anionic detergent and uric acid or urate, or a nucleic acid-adsorbing carrier and an adsorption promoter. Combinations can be mentioned.
- Various known carriers can be used as the carrier for adsorbing nucleic acids, and silica beads are typically used.
- the adsorption promoter may be any substance that disrupts the cell membrane or denatures the protein in the sample and contributes to the binding of nucleic acid to the nucleic acid adsorption carrier.
- a chaotropic substance for example, guar-gin thiocyanate, guar
- the configuration of the solid matrix 23 is not limited to the above-described example as long as it can efficiently adsorb the nucleic acid in the sample.
- the solid matrix 23 is also separated from the bottom force of the reaction tank 34. It can be. This makes it possible to prevent the solid matrix 23 from being located on the photometry path of the photometry mechanism 8 described later, thereby improving photometry accuracy. Wear. Since the solid matrix 23 is not located on the photometric path, it is possible to use a solid matrix having a large size. As a result, it is possible to carry more nucleic acids on the solid matrix 23, and it is possible to amplify nucleic acids more efficiently and to improve the analysis accuracy.
- the cartridge main body 21 includes a storage tank 27 and three cleaning tanks 28.
- the storage tank 27 is for storing the nucleic acid extraction element 20 and has a step 27A for locking the flange 25 of the nucleic acid extraction element 20.
- the upper opening 27B of the storage tank 27 is preferably closed with a sealing material such as an aluminum thin film so that the nucleic acid extraction element 20 does not come off under the force of the upper opening 27B. No.
- the sealing material may be peeled off by the user when the nucleic acid purification cartridge 2 is used, or may be automatically peeled off by the nucleic acid analyzer 1.
- Each of the washing tanks 28 to 28 has a solid matrix
- washing solution for removing impurities from 23.
- the washing solution is preferably charged in advance into washing tanks 28 to 28 as cartridge 2 for purifying nucleic acid,
- the washing solution charged in the nucleic acid analyzer 1 is dispensed into washing tanks 28 to 28 during analysis.
- washing solution for example, a washing solution that has a small action of eluting nucleic acids from the solid matrix 23 and prevents the binding of contaminants (eg, guanidine hydrochloride or ethanol) can be used.
- the same cleaning liquid is held in the three cleaning tanks 28-28.
- different cleaning liquids may be held.
- each of the cleaning tanks 28 to 28 is used.
- the upper openings 28A to 28A of the cleaning tanks 28 to 28 and the upper opening 27B of the storage tank 27 are collectively
- the sample holding tank 29 is used to hold a sample to be analyzed (target for extracting nucleic acid). belongs to.
- the holding of the sample in the sample holding tank 29 may be performed before setting the nucleic acid purification cartridge 2 in the nucleic acid analyzer 1, or may be performed after setting the nucleic acid purification cartridge 2 in the nucleic acid analyzer 1. . In the latter case, it is preferable that the nucleic acid analyzer 1 be configured to automatically dispense the sample into the sample holding tank 29.
- the sample for example, whole blood, serum, plasma, urine, saliva, or body fluid can be used.
- the excess liquid removing tank 21A is for removing the excess washing liquid attached to the nucleic acid extraction element 20, the solid matrix 23 and the holding portion 26 of the holding member 22 after washing the solid matrix 23 in the nucleic acid extraction element 20. belongs to.
- water absorbing members 21Ad and 21Ae are fixed in close contact with the bottom wall 21Aa and the front and rear walls 21Ab and 21Ac.
- the water absorbing members 21Ad and 21Ae are made of, for example, a porous material such as foamed resin or cloth, and are configured to be able to absorb and remove excess washing liquid from the nucleic acid extraction element 20 by bringing the nucleic acid extraction element 20 into contact with the element. Being done.
- the nucleic acid amplification cartridge 3 is for enabling automatic nucleic acid analysis and measurement in the nucleic acid analyzer 1, and includes a cartridge body 30 and a lid. Has 31.
- the cartridge body 30 includes four reagent holding tanks 32 to 32, a mixing tank 33, and a reaction tank 3
- Each of the reagent holding tanks 32 to 32 stores reagents necessary for nucleic acid amplification and measurement in an aqueous solution.
- the type of reagents held in step 2 is selected according to the amplification method and measurement method used.
- Amplification methods include, for example, the PCR (Polymerase Chain Reaction) method, the ICAN (Isothic and himeric Primer-initiated Amplification of Nucleic acid) method, the LAMP (Loop-Mediated Isothermal Amplification) method, and the NASBA (Nucleic acid Sequence Base a Amplification) method can be employed.
- PCR Polymerase Chain Reaction
- ICAN Isothic and himeric Primer-initiated Amplification of Nucleic acid
- LAMP Loop-Mediated Isothermal Amplification
- NASBA Nucleic acid Sequence Base a Amplification
- one or more LAMP primers, dNTPs, strand displacement DNA synthase, and reverse transcriptase Is used.
- the NASBA method at least two types of primers, dNTP, rNTP, reverse transcriptase, DNA polymerase, RNaseH, and RNA polymerase are used as reagents.
- a measuring method a fluorescence measurement, a color measurement, a radioactivity measurement, or electrophoresis can be adopted.
- the nucleic acid analyzer 1 employs fluorescence measurement. In this case, it is preferable to use a fluorescent primer as the primer.
- the mixing tank 33 is used to transfer two or more reagents held in the reagent holding tanks 32 to 32 to the reaction tank 34.
- reagents are previously charged in the reagent holding tanks 32 to 32,
- each reagent holding tank 32 to 32 may be individually closed or four reagent holding tanks 32.
- the reaction tank 34 is for accommodating the mixed reagent and the nucleic acid extraction element 20, and reacts the nucleic acid carried on the nucleic acid extraction element 20 with the mixed reagent prepared in the mixing tank 33. It provides a space (see Figures 13 and 14).
- the reaction tank 34 has a cylindrical portion 35 and a reaction detection portion 37.
- the cylindrical portion 35 is a portion to which the lid 31 is attached, and is provided with a thread groove 35A on its inner peripheral surface.
- the reaction detection section 37 serves as a detection container for performing a fluorescence measurement while providing a place for causing an amplification reaction of a nucleic acid. That is, the reaction detection unit 37 is a part to which the light emitted from the light emitting unit 80 of the photometry mechanism 8 described later is irradiated (see FIG. 15).
- the lid 31 is used to select whether or not the inside of the reaction detecting section 37 is sealed, and is detachable from the reaction tank 34 (the cylindrical section 35). More specifically, the lid 31 is attached to the tubular portion 35 by applying a rotational force to the tubular portion 35 (the reaction tank 3). It is configured to be able to select the state completely separated from 4).
- the lid 31 has a cylindrical main body part 38, a flange part 39, and a holding part 36.
- the main body 38 has a screw thread 38A for screwing into the screw groove 35A of the cylindrical portion 35 in the reaction tank 34, and a rotating member 60 (see FIG. 11B) in the lid attaching / detaching mechanism 6 described later. And a recess 38B.
- a plurality of ribs 38C are provided on the inner peripheral surface of the recess 38B.
- the plurality of ribs 38C are provided so as to extend in the vertical direction at regular intervals in the circumferential direction.
- the upper end of each rib 38C is formed in a tapered shape in which the width dimension becomes smaller as the force is directed upward.
- the flange portion 39 is for locking the claw 64 of the outer cover member 61 in the lid attaching / detaching mechanism 6 described later when the lid 31 removed from the reaction tank 34 is moved (see Fig. 11B). .
- the flange portion 39 is provided in an annular shape protruding outward from the upper end of the main body portion 38 in the radial direction.
- the holding portion 36 is for holding the nucleic acid extraction element 20 in the nucleic acid purification cartridge 2, and has a pair of locking claws 36A and pins 36B. .
- the pair of locking claws 36A are for locking with the locking head 24B of the nucleic acid extraction element 20, and are provided to protrude downward from the bottom surface 38D of the main body 38.
- Each locking claw 36A is provided with a hook portion 36Aa at the distal end, and the hook portion 36Aa is swingable. That is, the hook portions 36Aa of the pair of locking claws 36A can be approached or separated from each other.
- the pin 36B is inserted into the concave portion 24A of the cylindrical portion 24 of the nucleic acid extraction element 20, and is provided to protrude downward from the bottom surface 38D of the main body 38.
- the pin 36B functions as a guide when the nucleic acid extraction element 20 is held on the lid 31 and suppresses the backlash of the nucleic acid extraction element 20 with respect to the lid 31 after holding the nucleic acid extraction element 20 on the lid 31. belongs to.
- the housing 10 of the nucleic acid analyzer 1 is provided with a lid 11, a display unit 12, and an operation unit 13.
- the lid 11 is used to select between a state in which the inside of the housing 10 is exposed and a state in which the inside of the housing 10 is not exposed.
- the lid 11 is It is closed.
- the display unit 12 is for displaying analysis results and the like, and is configured by, for example, an LCD.
- the operation section 13 is a section that is operated to make various settings or to start analysis.
- a pipette device 4 for purifying nucleic acid As shown in Figs. 2 and 3, inside the casing 10, a pipette device 4, an operation mechanism 5 for purifying nucleic acid, a lid attaching / detaching mechanism 6, a temperature control mechanism 7, and a photometric mechanism 8 described later are provided.
- an operation mechanism 5 for purifying nucleic acid As shown in Figs. 2 and 3, inside the casing 10, a pipette device 4, an operation mechanism 5 for purifying nucleic acid, a lid attaching / detaching mechanism 6, a temperature control mechanism 7, and a photometric mechanism 8 described later are provided.
- the pipette device 4 is mainly for adjusting the mixture in the nucleic acid amplification cartridge 3 and has a nozzle 40.
- the pipette device 4 is used to supply a sample or a washing solution to the nucleic acid purification cartridge 2 as needed.
- the nozzle 40 is connected to a pump (not shown) so as to be able to suck and discharge the liquid, and a state in which a suction force is applied to the inside of the nozzle 40 and a state in which a discharge force is applied are selected. It is configured to The nozzle 40 can be moved vertically and horizontally by a drive mechanism (not shown) such as a robot arm, and its operation is controlled by a control unit 10 including a CPU and the like. The nozzle 40 is connected to the reagent holding tanks 32 to 32, the mixing tank 33, the reaction tank 34, and the nucleic acid purification cartridge 2 in the nucleic acid amplification cartridge 3.
- the nozzle 43 When adjusting the mixed sample and dispensing the mixed sample into the reaction tank 34 (reaction detection unit 37), the nozzle 43 has a tip 43 attached to the tip 42 as shown in FIG. The tip 43 is held in the rack 44 at a position adjacent to the standby position of the nozzle 40 (pipette device 4) as shown in FIG. A disposal box 45 for disposing of used chips 43 is disposed in a portion adjacent to the rack 44.
- the nucleic acid purification operating mechanism 5 uses the nucleic acid extraction element 20 of the nucleic acid purification cartridge 2 to extract nucleic acids in a sample, This is for controlling the operation of the nucleic acid extraction element 20.
- the operating mechanism 5 for nucleic acid purification has a plurality of insertion pins 50, a cylindrical body 51, and a support frame 52.
- the plurality of insertion pins 50 are for fitting into the cylindrical portion 24 of the nucleic acid extraction element 20, and are supported so as to be integrally movable with the support frame 52.
- the tubular body 51 is for removing the nucleic acid extraction element 20 attached to the insertion pin 50.
- the insertion pin 50 is jacketed so as to be able to move in the vertical direction independently of the insertion pin 50. That is, the cylindrical body 51 is located above the nucleic acid extraction element 20 (standby position) except when the operation of removing the nucleic acid extraction element 20 from the insertion pin 50 is performed, while extracting the nucleic acid from the insertion pin 50. When performing the operation of removing the element 20, it is moved downward relative to the insertion pin 50.
- the support frame 52 supports the plurality of insertion pins 50 at regular intervals in the direction in which the plurality of nucleic acid purification cartridges 2 are arranged, and functions as a medium for moving the insertion pins 50. It is.
- the support frame 52 is movable in the up-down direction and the front-rear direction by a driving mechanism (not shown), and its operation is controlled by, for example, the control unit 10 shown in FIG. Therefore, the plurality of insertion pins 50, and thus the nucleic acid extraction element 20 attached to them, can move up and down and back and forth along with the support frame 52.
- the plurality of nucleic acid extraction elements 20 can simultaneously and simultaneously impregnate the solid matrix 23 with the sample, wash the solid matrix 23, and remove excess liquid (see FIG. 10).
- the lid attaching / detaching mechanism 6 is for removing the lid 31 from the reaction tank 34 of the nucleic acid amplification cartridge 3 or for attaching the lid 31 to the reaction tank 34.
- a rotating member 60 and a mantle member 61 are provided. The rotating member 60 and the mantle member 61 can be moved vertically and horizontally by a drive mechanism (not shown), and the operation thereof is controlled by the control unit 10 (see FIG. 2)! ,
- the rotating member 60 is for applying a rotational force to the lid 31 of the nucleic acid amplification cartridge 3 and for moving the lid 31 while holding the lid 31, and has a substantially cylindrical tip portion 62. are doing.
- a plurality of ribs 63 are formed at the tip end portion 62 of the rotating member 60.
- the plurality of ribs 63 are provided so as to extend in the vertical direction at regular intervals in the circumferential direction of the distal end portion 62, and the lower end of each rib 63 has a tapered shape in which the width decreases as the force moves downward. It is formed in.
- These ribs 63 are to be engaged with the plurality of ribs 38C of the lid 31 as shown in FIG. 14, and when the tip 62 is inserted into the concave portion 38B of the lid 31, Made to be located between adjacent ribs 38C!
- the rib 63 of the tip 61 Since the ribs 38C of the recesses 38B interfere with each other, the tip portion 62 can be prevented from idling in the recesses 38B of the lid 31, and the rotational force of the rotating member 60 can be appropriately applied to the lid 31. can do.
- the upper ends of the plurality of ribs 38C in the concave portion 38B are tapered so that the width becomes narrower as the upper end faces upward, the plurality of ribs 63 at the distal end 61 of the rotating member 60 have the lower end downward.
- the taper shape is such that the width becomes narrower as it goes toward. Therefore, the distal end portion 61 of the rotating member 60 can be easily and reliably inserted into the concave portion 38B of the lid 31.
- the mantle member 61 is used to mantle the rotating member 60, and is formed in a cylindrical shape.
- the outer cover member 61 has a claw 64 for engaging with the flange portion 39.
- the claw 64 has a hook portion 65 provided at the tip end portion 64, and the hook portion 65 is swingable.
- the claw 64 is locked to the flange portion 39 of the lid 31 when the tip portion 62 of the rotating member 60 is inserted into the concave portion 38B of the lid 31. Thereby, the lid 31 is placed on the rotating member 60, and the lid 31 can be moved by moving the rotating member 60 and the outer cover member 61.
- the claw 62 is configured so that when the lid 31 is reattached to the reaction tank 34 by the rotating member 60, the locked state with the flange portion 39 of the lid 31 is automatically released.
- the temperature control mechanism 7 controls the temperature of the liquid held in the reaction detection section 37 of the nucleic acid amplification cartridge 3 by controlling the temperature of the heat block 70. It is for the purpose.
- the temperature of the heat block 70 is monitored by a temperature sensor (not shown), and the temperature of the heat block 70 is configured to be feedback-controlled according to the monitoring result of the temperature sensor.
- the heat block 70 has a concave portion 71 corresponding to the external shape of the reaction detection section 37 of the nucleic acid amplification cartridge 3. Thereby, the temperature of the reaction tank 34 in the heat block 7 can be selectively and efficiently controlled.
- the heat block 70 is further provided with straight through holes 72 and 73 connected to the recess 71.
- the through hole 72 is for guiding the light emitted from the light emitting section 80 of the photometric mechanism 8 described later to the reaction detecting section 37 of the reaction tank 34, and the through hole 73 is for receiving the light transmitted through the reaction detecting section 37. It is for leading to 81.
- the photometric mechanism 8 has a light emitting unit 80 and a light receiving unit 81.
- the light emitting section 80 is for irradiating the reaction detecting section 37 with excitation light through the through hole 72.
- Light-receiving part 81 is penetrated This is for receiving the fluorescence when the reaction detector 37 is irradiated with the excitation light through the hole 73.
- the photometric mechanism 8 continuously irradiates the excitation light from the light-emitting unit 80, and continuously monitors the amount of fluorescence at the light-receiving unit 81, thereby ascertaining the extent of nucleic acid amplification in real time. be able to.
- the nucleic acid purification cartridge 2 and the nucleic acid amplification cartridge 3 are set in the nucleic acid analyzer 1, as shown in FIGS.
- the number of cartridges 2 and 3 to be set may be any number as long as the number of nucleic acid purification cartridges 2 and the number of nucleic acid amplification cartridges 3 are the same.
- the washing liquid is held in advance in the washing tanks 28 to 28 as the nucleic acid purification cartridge 2.
- the settings according to the number of cartridges 2 and 3 set in the nucleic acid analyzer 1 and the types of the cartridges 2 and 3 were provided in the nucleic acid analyzer 1. This is performed by operating the operation unit 13 while checking the display unit 12.
- the nucleic acid analyzer 1 automatically performs nucleic acid purification, amplification, and measurement.
- nucleic acid purification is performed by moving the nucleic acid extraction element 20 by the nucleic acid purification operating mechanism 5 in the nucleic acid purification cartridge 2.
- the insertion pin 50 of the operating mechanism 5 for nucleic acid purification was positioned immediately above the storage tank 27 of the container 21 in the cartridge 2 for nucleic acid purification. Then, the drive pin 52 is moved to lower the insertion pin 50 and then to the upper side. By moving the insertion pin 50 downward, the insertion pin 50 is fitted to the cylindrical portion 24 of the nucleic acid extraction element 20, and the nucleic acid purification operating mechanism 5 is integrated with the plurality of nucleic acid extraction elements 20, and the insertion pin 50 The nucleic acid extraction element 20 is lifted by the operation mechanism 5 for nucleic acid purification by moving upward.
- the insertion pin 50 was moved together with the support frame 52, and the sample 29L held in the sample holding tank 29 of the nucleic acid purification cartridge 2 was added to the solid matrix of the nucleic acid extraction element 20. Soak 23. As a result, 29L of sample is placed on the solid matrix 23. Of nucleic acids are carried.
- Tas 23 is immersed sequentially. More specifically, the washing of the solid matrix 23 is performed by repeatedly moving the solid matrix 23 up and down in each washing tank 28 by the operation mechanism 5 for nucleic acid purification. At this time, in the operating mechanism 5 for nucleic acid purification, the state in which the solid matrix 23 is completely immersed in the washing liquid 28L to 28L and the state in which the solid matrix 23 is
- Control is performed such that the state of being located above the liquid level of L to 28L is repeated.
- the distal end portion of the nucleic acid extraction element 20 is brought into contact with the water absorbing members 21Ad and 21Ae held in the excess liquid removing tank 21A. Since the water absorbing member 21Ad is disposed in contact with the bottom wall 21Aa and the front and rear walls 21Ab, 21Ac of the excess liquid removing tank 21A, the tip of the nucleic acid extraction element 20 contacts all of the water absorbing members 21Ad. In this case, the excess washing liquid is efficiently removed from the tip of the nucleic acid extraction element 20, mainly the solid matrix 23 and the holding portion 26 of the holding member 22. As a result, when the nucleic acid is amplified using the nucleic acid extraction element 20 later, it is possible to suppress impurities contained in the washing solution from inhibiting nucleic acid amplification.
- the solid matrix 23 after the washing is held in the operating mechanism 5 for nucleic acid purification. It may be air-dried in a state.
- the nucleic acid extraction element 20 is removed from the insertion pin 50, and the nucleic acid extraction element 20 is stored again in the storage tank 27 of the nucleic acid purification cartridge 2. Let it. As described above, the removal of the nucleic acid extraction element 20 from the insertion pin 50 is performed by lowering the cylindrical body 51 of the nucleic acid purification operating mechanism 5 and causing the cylindrical head 51 to interfere with the locking head 24B. Is
- the solid matrix 23 can be easily moved in the nucleic acid analyzer 1.
- the cartridge 2 for nucleic acid purification contributes to performing nucleic acid analysis automatically.
- the mixed reagent is prepared in the nucleic acid amplification cartridge 3, and the mixed reagent is dispensed into the reaction tank 34 of the nucleic acid amplification cartridge 3, and then the solid matrix 23 carrying the nucleic acid is placed in the holding member. This is carried out by accommodating in the reaction tank 34 together with 22.
- the temperature of the heat block 70 is controlled by controlling the temperature of the heat block 70 (see FIG. 15) according to the type of amplification method to be used. Temperature control is performed.
- the tip 43 was attached to the tip end 42 of the nozzle 40 in the pipette device 4, and then the mixture was held in the reagent holding tanks 32 to 32 of the nucleic acid amplification cartridge 3.
- the reagents are sequentially dispensed by a predetermined amount into the mixing tank 33, and then the dispensed liquid is mixed by a pipetting operation by the pipetting device 4 (see FIG. 3).
- the dispensing of the mixture into the reaction tank 34 is performed by the pipette device 4 after the lid 31 is removed from the reaction tank 34 by the lid attaching / detaching mechanism 6.
- the removal of the lid 31 in the lid attaching / detaching mechanism 6 is performed by inserting the distal end portion 62 of the rotating member 60 of the lid attaching / detaching mechanism 6 into the recess 38B of the lid 31 and then rotating the rotating member 60. It is performed by moving up while moving.
- the rotating member 60 is inserted into the concave portion 38B, the hook portion 65 of the claw 64 of the outer cover member 61 is locked to the flange portion 39 of the lid 31.
- the lid 31 removed from the reaction tank 34 can be moved together with the rotating member 60 and the mantle member 61.
- the nucleic acid amplification cartridge is used in order to achieve the full automation of nucleic acid amplification and nucleic acid analysis.
- a method has been devised so that the lid 31 can be easily and reliably removed from the die 3.
- housing of the solid matrix 23 in the reaction tank 34 is performed using the lid attaching / detaching mechanism 6 and the lid 31 of the nucleic acid amplification cartridge 3. More specifically, the storage of the solid matrix 23 is performed by a series of steps such as holding the nucleic acid extraction element 20 on the lid 31 and reattaching the lid 31 to the reaction vessel 34, as shown in FIGS. The operation is performed by the following operation.
- the lid 31 when holding the nucleic acid extracting element 20 on the lid 31, the lid 31 was positioned above the storage tank 27 in the nucleic acid purification cartridge 2 by the lid attaching / detaching mechanism 6. This is done later by lowering the lid 31. In the process of moving the lid 31 downward, the pin 36B of the lid 31 is inserted into the concave portion 24A of the cylindrical portion 24 of the nucleic acid extraction element 20. As a result, the positional relationship between the lid 31 and the cylindrical portion 24 of the nucleic acid extraction element 20 is regulated, and the pair of locking claws 36A of the lid 31 are positioned at positions corresponding to the locking heads 24B of the cylindrical portion 24. Will be guided appropriately.
- the pair of locking claws 36A are pressed against the upward force locking head 24B.
- the pair of locking claws 36A are displaced such that the hook portions 36Aa are separated from each other.
- the pins 36B of the lid 31 are inserted deeper into the concave portions 24A of the cylindrical portion 24, and the hook portions 36Aa are positioned below the locking head 24B.
- the hooks 36Aa approach each other.
- the pair of locking claws 36A are locked by the locking head 24B, and the nucleic acid extraction element 20 is held by the lid 31.
- This state is firmly maintained by the pin 36B of the lid 31 being inserted into the concave portion 24A of the cylindrical portion 24, and the rattling of the nucleic acid extraction element 20 with respect to the lid 31 can be suppressed.
- reattachment of the lid 31 is performed by rotating the rotating member 60 holding the lid 31 with the lid 31 positioned in the reaction tank 34. Is That is, by applying a rotational force to the lid 31 in the aligned state, the lid 31 is screwed to the cylindrical portion 35 of the reaction tank 34. When the lid 31 is screwed into the cylindrical portion 35, the state in which the claws 64 of the outer cover member 61 are locked to the flange portion 39 of the lid 31 is released. Thus, the rotating member 60 and the mantle member 61 can move independently of the lid 31. On the other hand, since the lid 31 holds the nucleic acid extraction element 20, the reaction tank 34 accommodates the nucleic acid extraction element 20.
- the nucleic acid extraction element 20 has an O Due to the arrangement of the ring 22A, the solid matrix 23 of the nucleic acid extraction element 20 is fixed at a position separated by a certain distance from the bottom of the reaction tank 34 in the closed space. Since the mixed reagent is first stored in the reaction detecting section 37, the entire solid matrix 23 is immersed in the reaction detecting section 37. Thus, while the nucleic acid elutes from the solid matrix 23, the eluted nucleic acid reacts with the reagents and is amplified.
- the nucleic acid extraction element 20 in the storage tank 27 can be transferred to and stored in the reaction tank 34 by using the lid attachment / detachment mechanism 6 required for attaching / detaching the lid 31. . That is, in the nucleic acid analyzer 1, there is no need to provide a separate mechanism for transferring the nucleic acid extraction element 20. Therefore, in purifying nucleic acid and amplifying nucleic acid in one device, it is necessary to avoid the device from being complicated and to suppress the device from being enlarged, and to suppress the increase in the number of operating mechanisms to be controlled. This is also advantageous in this regard.
- the measurement of the nucleic acid is performed by the photometric mechanism 8 after the upper part of the reaction tank 34 is covered with the light shielding member 9.
- the nucleic acid analyzer 1 can accurately measure nucleic acids.
- nucleic acid analysis can be automatically performed only by mounting the set of the nucleic acid purification cartridge 2 and the nucleic acid amplification cartridge 3 configured as described above. .
- the cartridge 2 for nucleic acid purification and the cartridge 3 for nucleic acid amplification have also been devised so that nucleic acid analysis can be performed automatically. Therefore, when the nucleic acid analyzer 1, the nucleic acid purification cartridge 2 and the nucleic acid amplification cartridge 3 are used, the cartridges 2 and 3 are set in the nucleic acid analyzer 1 in the nucleic acid extraction operation and the nucleic acid amplification operation. In addition, there is no part that depends on the user's manual operation.
- the present invention is not limited to the examples described in the above embodiments.
- the solid matrix of the nucleic acid extraction element does not necessarily need to be held so as to be horizontal or substantially horizontal with respect to the vertical axis of the holding member.
- the solid matrix does not necessarily need to be formed in a disk shape.
- the configuration in which the solid matrix is retained is not limited to the configuration in which the solid matrix is pierced.
- the lid 31 holds the nucleic acid extraction element 20
- a nail is provided on the nucleic acid extraction element, and a locking portion for locking the nail is provided on the lid 31, or Only the fitting force may be used.
- the guide mechanism (the pin 36B of the lid 31 and the concave portion 24A of the nucleic acid extraction element 20 in the present embodiment) may be omitted. This can be achieved by providing a pin on the nucleic acid extraction element 30 while providing the same.
- FIGS. 16 to 33 a second embodiment of the present invention will be described with reference to FIGS. 16 to 33.
- the same reference numerals are given to the same elements as those in the first embodiment of the present invention described above, and the duplicated description thereof will be omitted. It shall be omitted.
- the nucleic acid analyzer 1 ′ shown in FIGS. 16 to 18 has a plurality of nucleic acid purification cartridges 2 ′ and nucleic acid amplification cartridges, like the nucleic acid analyzer 1 described above (see FIG. 1 and the like).
- the pipes are used by mounting the same number of pipes, and are provided with a pipette device 4 'and an operation mechanism for nucleic acid purification as shown in FIG.
- the nucleic acid purification cartridge ⁇ is for enabling automatic purification of nucleic acid in the nucleic acid analyzer, and includes the nucleic acid extraction element 2 (and the cartridge body 21 /). Have.
- the nucleic acid extraction element 2 is for supporting a nucleic acid in a sample, and has a holding member 22 'and a solid matrix 23' as well shown in Figs. 20A to 20C.
- the holding member 22 ' has a cylindrical portion 24', a flange portion 25 ', and a holding portion 2, and is formed entirely by resin molding, for example.
- the cylindrical portion 24 ' is used when the nucleic acid extraction element 20' is moved (see Figs. 18 and 22), and has a concave portion 24A ', a missing portion 24B', 24C ', and a plurality. Ribs 24D ' have.
- the recess 24A ' is used to fit the tip 42 ⁇ of the nozzle 4 (see FIGS. 26A and 26B) or the insertion pin 50' (see FIG. 18) of the nucleic acid purification mechanism in the pipette device ⁇ described later.
- the notches 24 B 'and 24 are for imparting elasticity to the cylindrical portion 24 ⁇ , and include a pair of V-shaped notches 24B' and a rectangular through hole 24B '.
- the flange portion 25 ' is formed in an annular shape protruding outward in the radial direction.
- the flange portion 25 ' is provided at the target site when the nucleic acid extraction element 20' is held in the target site (the storage tank 27 of the nucleic acid purification cartridge ⁇ and the reaction tank 34 'of the nucleic acid amplification cartridge 3'). It is for locking to the steps 27A and 36 '(see FIGS. 21 and 33).
- the holding section 2 is for holding the end of the solid matrix 23 'and for integrally holding the solid matrix 23' on the holding member 22 ⁇ , and is constituted by a pair of claws 26a '.
- the pair of claws 26a ' are preferably formed such that the contact area with the solid matrix 23' is as small as possible in order to increase the nucleic acid recovery efficiency. This is because the nucleic acid is eluted and collected after the nucleic acid is attached to the solid matrix 23 ′ as described later, but the pair of claws 26 a ′ are present at the portion in contact with the solid matrix 23 ′. This is because nucleic acid dissolution is not easy.
- the solid matrix 23 ' is for supporting a nucleic acid in a sample, and is constituted, for example, by supporting a filter paper with reagents for nucleic acid extraction.
- the solid matrix 23 ′ is formed in a strip shape, and is hung by the holding member 2 ′ by sandwiching an end of the solid matrix 23 ′.
- the cartridge body 21 ' is the same as the nucleic acid purification described above.
- the excess liquid removing tank 2 having a storage tank 27, three washing tanks 28 to 28, and a sample holding tank 29.
- the nucleic acid amplification cartridge is for enabling automatic nucleic acid amplification and measurement in the nucleic acid analyzer, and includes the cartridge body 30 ′ and the lid. 31 /
- the cartridge body 30 ' includes five reagent holding tanks 32', a mixing tank 33 ', and a reaction tank.
- the tanks 32 ', 33', and 34 ' are integrally molded by, for example, resin molding.
- Each reagent holding tank 32 holds reagents necessary for nucleic acid amplification and measurement in the form of an aqueous solution or suspension.
- Each reagent holding tank 32 ⁇ has a substantially rectangular cross section. To be precise, the center of the four side surfaces 32A 'protrudes inward. That is, the four corners of the reagent holding tank 32 ⁇ are acute angles of 90 degrees or less. This can prevent the reagents from being left on the side surface 32A 'of the reagent holding tank 32', and can hold the reagents at the bottom of the reagent holding tank 32 '. .
- the reagents held in the reagent holding tank 32 ' can be effectively used, and even if expensive reagents are used, the reagents should be held in the reagent holding tank 3 ⁇ .
- the production cost can be reduced by reducing the amount of the reagent.
- Such an effect can also be obtained by providing a groove or a rib on the side surface 32A 'of the reagent holding tank 3'.
- the type of reagents held in each reagent holding tank 32 ′ is selected according to the amplification method and measurement method to be adopted.
- the amplification method for example, the PCR method, the ICAN method, the LAMP method, or the NASBA method can be adopted.
- the mixing tank 3 is used when preparing a mixed reagent by mixing two or more reagents held in the reagent holding tank 3 ⁇ before supplying to the reaction tank 34 '.
- the mixing tank 33 ' also has an acute angle of 90 degrees or less at the four corners, similarly to the reagent holding tank 32' described above.
- grooves or ribs may be provided on the side surface 33A 'of the mixing tank 33'. Yes.
- the reaction tank 34 ⁇ is for accommodating the mixed reagent and the nucleic acid extraction element 20 ', and reacts the nucleic acid carried on the nucleic acid extraction element 2 (with the mixed reagent prepared in the mixing tank 3). (See Fig. 33.)
- This reaction tank 34 ' has a cylindrical portion 35 and a reaction detecting portion 37, and a step 3 is provided between them.
- the step portion 36 ⁇ is a portion for locking the flange portion 25 ⁇ of the nucleic acid extraction element 20 '(see Fig. 33), and the diameter of the reaction detection portion 37 must be set smaller than the diameter of the cylindrical portion 35.
- the lid 31 ' is for selecting whether or not to force the inside of the reaction detecting section 37 to be sealed, and is detachable from the reaction tank 34' (the cylindrical section 35). More specifically, the lid 31 ′ can be selected from a state of being attached to the cylindrical portion 35 and a state of completely separating the cylindrical portion 35 (reaction tank 34) by applying a rotational force. It is configured.
- the lid 31 ′ has a cylindrical main body 38 and a flange 39 similarly to the lid 31 (see FIG. 9) of the nucleic acid amplification cartridge 3 described above. However, nucleic acid analyzer!
- the lid 31 / is provided on the lid 31 of the nucleic acid amplification cartridge 3 described above.
- the holding portion 36 (see FIGS. 7B and 9), which has been used, is omitted.
- the pipette apparatus shown in FIGS. 16 and 17 is for adjusting the mixture in the nucleic acid amplification cartridge and moving the mixture to the reaction tank 34 ′.
- the nozzle 40 ' is capable of sucking and discharging the liquid, and is also capable of moving vertically and horizontally, and is provided with a reagent holding tank 3 ⁇ , a mixing tank 33', and a reaction tank 34 in the nucleic acid amplification cartridge. , And the storage tank 27 of the nucleic acid purification cartridge ⁇ (see FIGS. 16 and 17).
- the nozzle 40' is attached to the tip 42 'as shown in Figs. 25 25 and 25 ⁇ .
- Chip 43 force S mounted.
- the O-ring 42 is fitted into the tip 42 ⁇ of the nozzle 40 ' Therefore, when the tip 43 is attached to the tip 4 ⁇ , the adhesion between the tip 4 ⁇ and the tip 43 is enhanced.
- the pipette device ⁇ further takes out the nucleic acid extraction element 20 'from the storage tank 27 of the nucleic acid purification cartridge ⁇ as shown in Fig. 22, and transfers the nucleic acid extraction element 20' as shown in Fig. 31. It has a role to move the nucleic acid amplification cartridge to the reaction tank 34 '.
- the nucleic acid extraction element 20 ' is attached to the tip end 42' of the nozzle 40 'as shown in FIGS. 26A and 26B.
- the detaching member 41 / is for detaching the tip 43 or the nucleic acid extraction element 20 ′ attached to the tip end 42 ′ of the nozzle 40 ′.
- the detaching member 41 / covers the nozzle 40 'so that it can move up and down independently of the nozzle 4 (. That is, the detaching member 41 / Except when performing the operation of removing the cara chip 43 or the nucleic acid extraction element 20 ', while being located above the end face 43a of the chip 43 or the flange portion 2 of the nucleic acid extraction element 20' (standby position), When performing the removal operation, they are moved downward relative to the nozzle 40.
- the end surface 41A of the removal member 41 / is moved.
- ′ Interferes with the end surface 43a of the chip 43 or the flange portion 25 ′ of the nucleic acid extraction element 2 () to apply a downward force to the chip 43 or the nucleic acid extraction element 20 ′.
- the operation mechanism for nucleic acid purification controls the operation of the nucleic acid extraction element 20 'when extracting nucleic acid in a sample using the nucleic acid extraction element 2
- This operating mechanism for nucleic acid purification is similar to the operating mechanism for nucleic acid purification 5 of the nucleic acid analyzer 1 described above (see FIGS. 2 to 4).
- the insertion pin 5 is provided at the distal end of the nozzle 4 (so that it can be properly fitted to the cylindrical portion 24 ⁇ of the nucleic acid extraction element 20 '. It has a shape similar to 42 ⁇ .
- the nucleic acid analyzer As shown in Figs. After setting the cartridge for acid purification ⁇ and the cartridge for nucleic acid amplification, the nucleic acid is automatically set by setting according to the number and type (purification method, amplification method, measurement method) of the cartridges 2 'and 3'. Purification, amplification and measurement.
- nucleic acid purification is performed by moving the nucleic acid extraction element 20 'by a nucleic acid purification operation mechanism in the nucleic acid purification cartridge ⁇ as shown in Fig. 18. More specifically, first, the plurality of insertion pins 50 'of the nucleic acid purification operation mechanism 5' are fitted to the corresponding tubular portions 24 'of the nucleic acid extraction elements 20', and the plurality of nucleic acid extraction elements 20 ' In a state where it can be moved integrally. In this state, the solid matrix 23 'of the plurality of nucleic acid extraction elements 20' is immersed in the sample by the nucleic acid purification operating mechanism 5 ', and the nucleic acid in the sample is attached to each solid matrix 2.
- the washing of the solid matrix 2 is performed by repeating the solid matrix 23 ′ in each of the washing tanks 28 to 28 (see FIG. 19) by the nucleic acid purification operating mechanism 5 ′.
- the operation mechanism for nucleic acid purification is controlled so that the state in which the solid matrix 23 'is completely immersed in the washing solution and the state in which the solid matrix 23' is located above the level of the washing solution are repeated. You. In such a washing method, the contaminants can be efficiently removed from the solid matrix 2, so that the contaminants inhibit the nucleic acid amplification in the subsequent nucleic acid amplification step. Suppression, and the nucleic acid analysis can be performed with high accuracy.
- the washed solid matrix 23 ' may be blown and dried while being held by the nucleic acid purification operating mechanism.
- washing of the solid matrix 2 is completed (in some cases, blast drying is completed)
- remove the nucleic acid extraction element 2 from the insertion pin 50 'and transfer the nucleic acid extraction element 20' to the storage tank 27 of the nucleic acid purification cartridge 2 '. Recontain (see Figures 19 and 21).
- the target nucleic acid can be easily moved in the nucleic acid analyzer by supporting the target nucleic acid on a solid (nucleic acid extraction element 20 ').
- the nucleic acid purification cartridge ⁇ contributes to automatic nucleic acid analysis.
- a mixed reagent was prepared in a nucleic acid amplification cartridge, dispensed into the reaction tank 34 ⁇ of the nucleic acid amplification cartridge, and then the solid matrix 23 ⁇ carrying the nucleic acid was retained. It is carried out by transferring to the reaction tank 34 ⁇ together with the member 22 ⁇ .
- the temperature of the heat block 70 is controlled according to the type of amplification method used.
- the temperature of the reaction tank 34 ' is adjusted.
- the preparation of the mixed reagent and the dispensing of the mixed reagent into the reaction tank 34 ' are performed by controlling the operation of the pipette device 4' as in the case of the nucleic acid analyzer 1 (see Fig. 1 and the like) described above. Be done.
- the force required to remove the lid 3 from the reaction vessel 34 'by the lid attaching / detaching mechanism 6 is required.
- the rotating member 60 of the lid attaching / detaching mechanism 6 into the recess 38B 'of the lid 31' the rotating member 60 is moved upward while rotating. Be done.
- the lid 31 ' has been devised so that the lid 31' can be easily and reliably removed from the nucleic acid amplification cartridge 3 'in order to achieve full automation of nucleic acid amplification and, consequently, nucleic acid separation! Puru.
- the transfer of the solid matrix 23 ⁇ to the reaction tank 34 ⁇ is performed by removing the nucleic acid extraction element 20 'from the storage tank 27 of the nucleic acid purification cartridge 2' (see Fig. 22), and removing the nucleic acid amplification cartridge. This is performed by a series of operations such as moving the nucleic acid extraction element 2 (to the reaction layer 34 'and removing the nozzle 4 (forced nucleic acid extraction element (see FIGS. 28 and 31).
- the nucleic acid extraction element 2 (was taken out by positioning the nozzle 40 'directly above the storage tank 27 of the cartridge 2' for nucleic acid purification and then moving the nozzle 4z downward.
- the tip 4 ⁇ of the nozzle 4 is fitted to the cylindrical portion 24 'of the nucleic acid extraction element 2 (, the nozzle 40' is moved upward.
- V-shaped notch 24B 'and rectangular through-hole 24 are formed with notches 24B', 24 (See FIGS. 20A to 20C). Therefore, when the distal end portion 42 ⁇ of the nozzle 4 () is fitted to the cylindrical portion 24 ', an appropriate elastic force can be imparted to the distal end portion 4 ⁇ . 20 'is appropriately held in the cylindrical portion 24' with respect to the tip 42 'of the nozzle 40'.
- the nucleic acid extraction element 20 ' is moved by moving the nozzle 40' in a state where the nucleic acid extraction element 20 'is held at the tip 42' of the nozzle 40 '.
- removal of the nucleic acid extraction element 2 is performed by positioning the tip 42 ⁇ of the nozzle 4 (together with the nucleic acid extraction element 20 'inside the reaction tank 34 ⁇ , 41 / is moved downward relative to the nozzle 40 ', that is, when the removal member 4 is moved downward, the nucleic acid extraction element 2 (to the flange portion 25' of the nucleic acid extraction element 2) is moved.
- the detaching member 41 / interferes, and a downward force acts on the flange portion 25 ⁇ and thus the nucleic acid extracting element 20 ', so that the force of the distal end 42 of the nozzle 4 (also removes the nucleic acid extracting element 20'.
- a nucleic acid analyzer! In /, the nucleic acid extraction element 20 'can be moved using the nozzle 4 (and the detaching member 4) necessary for sample preparation. Therefore, nucleic acid purification and nucleic acid amplification can be performed in one step.
- the originally required configuration pipette device 4
- the device is not complicated, and the number of operating mechanisms to be controlled is not increased. In this respect, it is also advantageous in terms of suppressing the complexity and size of the device configuration.
- the solid matrix 2 is accommodated in the reaction detector 37 with the lower end thereof being separated from the bottom of the reaction detector 37 by a fixed distance. Since the reagent is contained, the entire solid matrix 23 ′ is immersed in the reaction detector 37.
- the nucleic acid elutes from the solid matrix 2 while the eluted nucleic acid reacts with the reagents. Amplify.
- the lower end of the solid matrix 23 ' is also separated from the bottom force of the reaction detector 37. More specifically, the lower end of the solid matrix 23 ' The position 8 does not hinder the irradiation of excitation light to the reaction detection section 37 and the measurement of fluorescence (see FIG. 33). Thus, even when a solid carrier is used for attaching the nucleic acid, the solid carrier does not inhibit the measurement of the nucleic acid.
- the lid 31 / of the reaction tank 34 ' was reattached, while the upper part of the reaction tank 34' was covered with the light shielding member 9.
- the measurement is performed by the photometry mechanism 8.
- the measurement of nucleic acid by the photometric mechanism 8 is performed in the same manner as in the nucleic acid analyzer 1 described above (see FIG. 1 and the like).
- the nucleic acid purification cartridge ⁇ and the nucleic acid amplification cartridge The nucleic acid analysis can be performed automatically simply by setting the cartridges.
- the user has to set the cartridges 2 'and 3' in the nucleic acid analyzer 1, There is no operation dependent part. Therefore, the burden on the user in the nucleic acid analysis is remarkably reduced, and the measurement reproducibility is not degraded due to a variation in the recovery rate of the nucleic acid due to a difference in the skill of the user.
- human genomic DNA as the target nucleic acid is appropriately purified using the nucleic acid purification cartridge, nucleic acid amplification cartridge and nucleic acid analyzer according to the first embodiment of the present invention described above. We examined whether it could be done by SNP (Single Nucleotide Polimorphism) typing.
- SNP Single Nucleotide Polimorphism
- the storage tank for the cartridge body (reference number in the figure) is formed. 27) and the excess liquid removal tank (see reference numeral 21A in the figure) in the excess liquid removal tank (see reference numerals 21Ad and 21Ae in the figure). It was formed by fixing urethane foam (SAQ, manufactured by Corporation).
- the dimensions of the water absorbing member 21Ad were 5 mm ⁇ 8 mm ⁇ 17 mm, and the dimensions of the water absorbing member 21Ae were 5 mm ⁇ 1 lmm ⁇ 14 mm.
- the cartridge body was formed into a form shown in Figs. 5 and 6 by resin molding using PET.
- the nucleic acid extraction element was formed by holding a solid matrix (see reference numeral 23 in the figure) on a holding member (see reference numeral 22 in the figure).
- the solid matrix was formed by punching an FTA Classic Card (Whatman, Cat. No. WB120205) into a ⁇ 2.5 mm disc shape using a punch.
- the FTA Classic Card is a filter paper for collecting nucleic acid containing cellulose as a main component.
- the holding member was formed into a form shown in FIGS. 7A and 7B by resin molding using PET.
- retaining piece 26C in the figure no retaining piece is formed on the retaining member immediately after the resin molding, and the retaining piece is formed by making a hole in the center of the solid matrix and forming a pin-shaped retaining member. After being inserted into the portion (see reference numeral 26B in the figure), the tip portion of the pin-shaped portion was formed by heat treatment. The locking piece is for preventing the solid matrix of the pin-shaped part from falling off as described above.
- the nucleic acid purification cartridge is formed by forming the cartridge body (see reference numeral 30 in the figure) and the lid (see reference numeral 31 in the figure) into the form shown in Figs. 8 and 9 by forming resin using PET. It was formed by screwing a lid on the reaction tank (see reference numeral 34 in the figure) of the cartridge body.
- the sample (see reference numeral 29L in the figure) is washed in the sample holding tank (see reference numeral 29 in the figure) of the cartridge for nucleic acid purification, and the sample is washed in three washing tanks (see reference numerals 28 to 28 in the figure).
- the cartridge for nucleic acid purification was set in 1), and the nucleic acid analysis was performed automatically in the nucleic acid analyzer.
- the operating mechanism for nucleic acid purification (see reference numeral 5 in the figure) was driven so that the nucleic acid extraction element (solid matrix) performs the operation described below.
- the insertion pin (see reference numeral 50 in the figure) in the nucleic acid operation mechanism is connected to the cylindrical portion of the holding member.
- washing tanks 28 to 28 as washing tank 28 ⁇ washing tank 28
- Washing is performed when the entire solid matrix 23 is located above the liquid level of the washing liquid 28L.
- the procedure was the same as in the case where the cleaning tank 28 was used, except that the time was set to 2 minutes.
- Amplification of nucleic acids is performed by PCR using reagent mixtures A and B shown in Table 2 below, and the degree of amplification of nucleic acids depends on the SNP (Single) of CYP2C19 * 2 * 3, which is a nucleotide sequence encoding a drug metabolizing enzyme. Nucleotide Polymorphism) was confirmed by typing.
- Reagent mixture B 40 ⁇ L Sterile distilled water 5.6juL
- SEQ ID NO: 2 cgagggttgttgatgtccatc
- Rooster column number 3 gaaaaattgaatgaaaacatcaggattgta
- SEQ ID NO: 6 gcaccccctggatcc- (TAMRA)
- the confirmation of nucleic acid amplification was performed by separately dividing the reagent mixture A or the reagent mixture B into the reagent holding tanks (see symbols 32 and 32 in the figure) of the nucleic acid amplification cartridge main body. Injected
- the cartridge for nucleic acid amplification was set in the nucleic acid analyzer (see reference numeral 1 in the figure), and the nucleic acid analyzer was automatically operated.
- a pipette device reference numeral 4 in the figure
- a lid attaching / detaching mechanism reference numeral 6 in the figure
- a temperature controller are provided so that the nucleic acid extraction element (solid matrix) performs the following operation.
- the mechanism symbol 7 in the figure was driven.
- a tip (reference numeral 43 in the figure) was attached to the nozzle (reference numeral 40 in the figure) of the pipette device, and then 30 L of the reagent mixture A from the reagent storage tank 33A, and a reagent storage tank 33A.
- 30 L of reagent mixture B was collected from 33B and dispensed into the mixing tank (see reference numeral 33 in the figure).
- the mixture of reagents A and B is stirred and mixed by the suction and discharge of the nozzle to prepare a reaction solution.
- the reaction solution was sampled in a volume of 50 L and dispensed into a reaction tank (see reference numeral 34 in the figure).
- the lid is moved to The pawl (see reference numeral 36A in the figure) was engaged with the locking head (see reference numeral 24B in the figure) of the nucleic acid extraction element, and they were integrated.
- the heat block (see reference numeral 70 in the figure) of the temperature control mechanism was driven to change the temperature of the reaction solution in the reaction tank to amplify the target nucleic acid.
- the change in temperature was 120 seconds at 95 ° C ⁇ (4 seconds at 95 ° C + 60 seconds at 54 ° C) for 50 cycles ⁇ 60 seconds at 95 ° C ⁇ 90 seconds at 45 ° C.
- Tm analysis was employed.
- the temperature of the reaction solution in which the nucleic acid was amplified was raised from 45 ° C to 95 at a rate of 1 ° C for 3 seconds, and the fluorescence intensity at that time was measured in real time.
- the measurement wavelength was 515-55511111 (* 2) and 585-750 nm (* 3), and SNP typing was performed at each measurement wavelength ((* 2), (* 3)).
- the results of measuring the fluorescence intensity at each wavelength are shown in FIG. 34, with the horizontal axis representing the temperature and the vertical axis representing the fluorescence intensity differential (change rate).
- the reaction was performed at 60 ° C for 1 hour after incubating at 70 ° C for 300 seconds with the solid matrix immersed in the reaction solution.
- This one-time reaction has a 60-cycle force with one cycle consisting of 30 seconds in the first step in which no fluorescence intensity is measured and 30 seconds in the second step in which the fluorescence intensity is measured. It was measured in real time at the step.
- the measurement wavelengths were 515-555 nm (mt) and 585-750 nm (wt), and SNP typing was performed for each of the SNP type mutant type and wild type.
- the results of measuring the fluorescence intensity at each wavelength are shown in FIG. 35, where the horizontal axis represents the cycle number and the vertical axis represents the fluorescence intensity.
- amplification reagent use Loipamp P450 Typing Reagent Kit (CYP2C9 * 3) manufactured by Eiken-Danigaku Co., Ltd., and mix the reagents to be held in the reagent holding tank of the cartridge body (see symbols 33A and 33B in the figure)
- the compositions of liquids A and B were as shown in Table 3.
- the dispensed amounts of the reagent mixtures A and B, the mixing conditions, and the dispensed amount of the reaction solution were the same as in Example 1.
- the solid matrix was immersed in the reaction solution, treated at 95 ° C for 5 minutes, and then reacted at 60 ° C for 1 hour.
- This one-time reaction has a 60-cycle force, with one cycle of 30 seconds in the first step without measuring the fluorescence intensity and 30 seconds in the second step of measuring the fluorescence intensity as one cycle.
- the measurement was performed in real time at a measurement wavelength of 515 to 555 nm.
- the results of measuring the fluorescence intensity in the second step of each cycle are shown in FIG. 36, where the horizontal axis represents the number of cycles and the vertical axis represents the fluorescence intensity.
- the method is limited to the PCR method so that the results of Examples 1 to 3 are also effective.
- the target nucleic acid can be appropriately amplified. That is, it was confirmed that the nucleic acid analysis can be automatically performed when the cartridge for nucleic acid purification, the cartridge for nucleic acid extraction, and the nucleic acid analyzer described in the first embodiment of the present invention are used.
- the present invention it is possible to reduce the burden on the user in a series of steps in nucleic acid purification, nucleic acid amplification, nucleic acid measurement, and nucleic acid analysis, to improve the analysis efficiency, and to increase the size of the apparatus. In addition, an increase in manufacturing cost can be suppressed.
- nucleic acids were properly amplified based on the example described in the first embodiment of the present invention. It is considered that even when the configuration described in the second embodiment of the present invention is employed, the nucleic acid can be properly amplified and the above-described effects can be obtained.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP05746024A EP1757679A1 (en) | 2004-06-02 | 2005-06-01 | Container for nucleic acid amplification, nucleic acid preparation kit and nucleic acid analyzer |
JP2006514121A JPWO2005118772A1 (ja) | 2004-06-02 | 2005-06-01 | 核酸増幅用容器、核酸調製キット、および核酸分析装置 |
US11/628,399 US20080268529A1 (en) | 2004-06-02 | 2005-06-01 | Container for Nucleic Acid Amplification, Nucleic Acid Preparation Kit and Nucleic Acid Analyzer |
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JP2004164989 | 2004-06-02 | ||
JP2004-164987 | 2004-06-02 | ||
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JP2004-164989 | 2004-06-02 | ||
JP2004-164988 | 2004-06-02 | ||
JP2004164987 | 2004-06-02 | ||
JP2005-034775 | 2005-02-10 | ||
JP2005034775 | 2005-02-10 |
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WO2008018469A1 (fr) | 2006-08-09 | 2008-02-14 | Arkray, Inc. | Procédé d'obtention d'un produit d'amplification par PCR et son utilisation |
JP2009077639A (ja) * | 2007-09-25 | 2009-04-16 | Tosoh Corp | 核酸検出装置 |
JP2009225714A (ja) * | 2008-03-21 | 2009-10-08 | Hokkaido Univ | ハイブリダイゼーション器具、ハイブリダイゼーション装置、およびハイブリダイゼーション促進方法 |
JP2010533490A (ja) * | 2007-07-13 | 2010-10-28 | ハンディーラブ インコーポレイテッド | 多数の生物学的サンプルについて核酸抽出及び診断試験を行う一体装置 |
WO2011040504A1 (ja) | 2009-09-30 | 2011-04-07 | 凸版印刷株式会社 | 核酸分析装置 |
JP2011072276A (ja) * | 2009-09-30 | 2011-04-14 | Toppan Printing Co Ltd | 試薬カートリッジ及び核酸精製キット |
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Also Published As
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EP1757679A1 (en) | 2007-02-28 |
US20080268529A1 (en) | 2008-10-30 |
JPWO2005118772A1 (ja) | 2008-04-03 |
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