WO2003095088A1 - Procede et appareil pour le prelevement d'un micromateriau - Google Patents
Procede et appareil pour le prelevement d'un micromateriau Download PDFInfo
- Publication number
- WO2003095088A1 WO2003095088A1 PCT/JP2003/000231 JP0300231W WO03095088A1 WO 2003095088 A1 WO2003095088 A1 WO 2003095088A1 JP 0300231 W JP0300231 W JP 0300231W WO 03095088 A1 WO03095088 A1 WO 03095088A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- medium
- phase transition
- support
- laser
- transition temperature
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000007704 transition Effects 0.000 claims abstract description 33
- 229920000609 methyl cellulose Polymers 0.000 claims abstract description 15
- 239000001923 methylcellulose Substances 0.000 claims abstract description 15
- 108020004414 DNA Proteins 0.000 claims abstract description 14
- 102000053602 DNA Human genes 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 31
- 239000000499 gel Substances 0.000 claims description 20
- 244000005700 microbiome Species 0.000 claims description 17
- 229920002678 cellulose Polymers 0.000 claims description 6
- 239000001913 cellulose Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 239000003550 marker Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 12
- 239000000203 mixture Substances 0.000 abstract description 5
- 230000001939 inductive effect Effects 0.000 abstract description 3
- 230000002441 reversible effect Effects 0.000 abstract description 3
- 235000010981 methylcellulose Nutrition 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000000243 solution Substances 0.000 description 10
- 238000000926 separation method Methods 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 8
- 239000000758 substrate Substances 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001248 thermal gelation Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 239000013076 target substance Substances 0.000 description 3
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 108091006629 SLC13A2 Proteins 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 238000004720 dielectrophoresis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000009629 microbiological culture Methods 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 229920003213 poly(N-isopropyl acrylamide) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000006903 response to temperature Effects 0.000 description 1
- 239000010979 ruby Substances 0.000 description 1
- 229910001750 ruby Inorganic materials 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
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
- B01L3/502—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
- B01L3/502761—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 specially adapted for handling suspended solids or molecules independently from the bulk fluid flow, e.g. for trapping or sorting beads, for physically stretching molecules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502753—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by bulk separation arrangements on lab-on-a-chip devices, e.g. for filtration or centrifugation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00495—Means for heating or cooling the reaction vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00497—Features relating to the solid phase supports
- B01J2219/00527—Sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00639—Making arrays on substantially continuous surfaces the compounds being trapped in or bound to a porous medium
- B01J2219/00644—Making arrays on substantially continuous surfaces the compounds being trapped in or bound to a porous medium the porous medium being present in discrete locations, e.g. gel pads
-
- 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
- B01L2200/06—Fluid handling related problems
- B01L2200/0647—Handling flowable solids, e.g. microscopic beads, cells, particles
- B01L2200/0668—Trapping microscopic beads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
- B01L2300/0816—Cards, e.g. flat sample carriers usually with flow in two horizontal directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
- B01L2300/1805—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks
- B01L2300/1827—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks using resistive heater
-
- 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
- B01L2300/1861—Means for temperature control using radiation
-
- 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
- B01L2300/1861—Means for temperature control using radiation
- B01L2300/1872—Infrared light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/06—Valves, specific forms thereof
- B01L2400/0677—Valves, specific forms thereof phase change valves; Meltable, freezing, dissolvable plugs; Destructible barriers
-
- C—CHEMISTRY; METALLURGY
- C40—COMBINATORIAL TECHNOLOGY
- C40B—COMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES
- C40B60/00—Apparatus specially adapted for use in combinatorial chemistry or with libraries
- C40B60/14—Apparatus specially adapted for use in combinatorial chemistry or with libraries for creating libraries
-
- G01N15/1433—
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/2813—Producing thin layers of samples on a substrate, e.g. smearing, spinning-on
- G01N2001/282—Producing thin layers of samples on a substrate, e.g. smearing, spinning-on with mapping; Identification of areas; Spatial correlated pattern
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/2813—Producing thin layers of samples on a substrate, e.g. smearing, spinning-on
- G01N2001/2833—Collecting samples on a sticky, tacky, adhesive surface
- G01N2001/284—Collecting samples on a sticky, tacky, adhesive surface using local activation of adhesive, i.e. Laser Capture Microdissection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
- G01N2001/2886—Laser cutting, e.g. tissue catapult
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N2015/1497—Particle shape
Definitions
- the present invention relates to a method and an apparatus for recovering a specific minute object from a large number of minute objects. More specifically, the present invention relates to a method in which a particular minute object such as a DNA molecule, a cell, or a microorganism is mixed with another minute object. The present invention relates to a method and an apparatus for collecting. Conventional technology
- the cell sorter method is effective for objects with a size of around several tens of m, it is difficult to apply it to microorganisms and other objects with a size of about several m, and the samples are arranged in a line. Because of this, sequential separation work was performed, and it was not possible to quickly extract an arbitrarily selected target from randomly dispersed samples.
- the inventors have devised a high-speed separation system using a non-contact mobilization method in which separation is performed using a combination of a laser trap, dielectrophoresis, and microphone-cavity flow in a microfluidic circuit ( JP-A-11-346756, Japanese Patent Application No. 11-210750, JP-A-2001-095558, and JP-A-2001-145478). Since the microorganisms are transported directly by the laser trap, there is a risk of damaging the microorganisms. To avoid this, laser traps on the micro tools are used to push and pull the microorganisms, which is indirect. We have also devised a method of transporting to There was power S. Problems to be solved by the invention
- An object of the present invention is to provide a method for recovering a specific minute object such as a DNA molecule, a cell or a microorganism from a mixture of other minute objects, and which can solve the following problems. I do.
- a substance that reversibly causes a phase transition between gel and sol is used. Focusing on using it as a medium, By devising a simple method for causing phase transition, we have completed a method for accurately and easily recovering minute objects.
- a substance or a solution containing the substance that reversibly induces a phase transition between a gel and a sol in which a large number of minute substances are dispersed is poured into the minute channel.
- a small object existing in a specific observation area is observed and selected, for example, with a microscope.
- the target object is selected from those existing in the vicinity of the support (the bottom of the container, etc.), and the surrounding area is Gerried with the target locally. ) Can be fixed to. After the target is fixed to the support together with the gel, it flows into the microchannel to remove the non-fixed one. After sufficient removal, the medium is solified to lower the viscosity.
- the target can be collected by regenerating the flow for collecting the target. '
- the present invention relates to a method for recovering a desired minute object in a system including a medium, a support, and a minute object that causes a phase transition between a sol and a gel reversibly, and a method for recovering the minute object to be collected.
- the minute object includes a desired minute object to be collected and an unnecessary minute object. According to the present invention, only the desired minute object can be extracted from the mixture with high accuracy.
- This medium can be used in the method of the present invention as long as it causes reversible phase transition between sol and gel. Among them, it is convenient to use one that causes such a phase transition depending on the temperature. That is, the medium has a sol-gel phase transition temperature, and preferably gels when heated above the phase transition temperature and sol when cooled below the phase transition temperature. ,.
- This phase transition temperature is preferably room temperature to 90 ° C., more preferably 20 to 85 ° (:, still more preferably 30 to 60 ° C.), although it depends on the properties of the microscopic object which is the object of the present invention. In particular, in order to separate and recover microorganisms, the phase transition temperature is preferably 30 to 50 ° C.
- the medium is preferably a water-soluble cellulose derivative or a solution thereof.
- the cellulose derivative is more preferably methylcellulose.
- a medium a polymer of poly (N-isopropylacrylamide) and a polyethylene dalicol derivative may be used as a medium. This polymer is commercially available, for example, as Meviol Gel (registered trademark, Ikeda Rika Co., Ltd., transition temperature: 22 ° C). It is also possible.
- methylcellulose (Metro ⁇ "'s SM) is usually turbid and gelich when heated with a 2% solution to about 55 ° C, and resolubilizes when cooled.
- Methylcellulose is a fiber and is harmless to living organisms and humans because it is a fiber
- the mixing temperature lowers when mixed with NaC1 or NaOH.
- the addition of 15% NaC lowers the genoleration temperature to about 40 degrees.
- methylcellulose exhibits a hysteresis characteristic in response to temperature-induced changes in viscosity. Therefore, if this property is used, multiple targets can be extracted.
- the flow is as follows: 1. Heat the electrode to T2, which is just before the gelation start temperature, and the solution is completely sol.
- step 3 multiple objects can be held on the heating electrode.
- Steps 2 to 5 are repeated, and an arbitrary number of objects can be held.
- the support is used for fixing the target object and for fixing the target object when removing unnecessary objects, so that there is no particular limitation as long as it can meet such a purpose.
- it is a container in which a minute object and a medium are stored, but a support having a rod-like, plate-like, mesh-like, or lattice-like shape may be used separately from the container.
- the material of the support There is no particular limitation on the material of the support.
- the support is transparent, it is possible to illuminate the light and observe the target through the support, and further, it is possible to use a microscope of a type that is observed by a transmission illumination method. Therefore, it is preferable.
- the medium causes a phase transition between sol and Ge / depending on the temperature, it is advantageous if the medium can be heated.
- the support is a transparent electrode (ITO)
- ITO transparent electrode
- it can be heated locally by irradiating it with an infrared laser beam, or the whole or part can be heated by energization.
- any object can be used as long as it is incorporated into the gelled medium, but the size is particularly several nm to about 200 ⁇ , preferably several nm. Those of about 30 m are suitable.
- the method of the present invention is particularly suitable for separating and recovering minute objects such as DNA molecules, cells or microorganisms.
- Such a small object usually has a force capable of visually discriminating the shape, size, color, fluorescence reaction, and the like of the sample by visual observation or through a microscope. May be identified. In the present invention, such selection does not necessarily need to be performed visually, and may be automated using an automatic identification device using a CCD camera or the like or a device that automatically detects a fluorescence reaction. .
- background noise is regarded as a problem.
- DNA near a cover glass is used by using thermal gelich. Fixing only the DNA, removing the DNA floating above, then removing the heat gelation and observing it can solve the problem of background noise.
- the conventional method using evanescent illumination is a method in which evanescent light is used as excitation light to emit only fluorescent molecules in the immediate vicinity of glass.
- An expensive optical system for evanescent illumination is required. If the method (thermal gelation) of the present invention is used, only the minute objects in the vicinity of the support shown in FIG. 3 can be temporarily fixed, and the fluorescent molecules and observation obstacles that become observation noise can be removed by washing. Observation with high sensitivity (low background noise) is possible with the fluorescent microscope used.
- the means for reversibly inducing the phase transition between the gel and the sol may be appropriately selected depending on the properties of the substance which causes the phase transition between the gel and the sol. It is convenient to use a substance that causes a phase transition reversibly.
- a microelectrode may be formed by microfabrication, and resistance wire heating may be performed, or local heating may be performed using an infrared irradiation device.
- the resistance wire of the heating electrode or the like, and the object is a microorganism or the like
- the insulator include silicon oxide, silicon nitride, polyimide resin, and the like.
- the medium is heated to a phase transition temperature or higher by irradiating infrared rays, and the medium is cooled to a phase transition temperature or lower by stopping the irradiation.
- the infrared irradiation device a known device can be used, but an infrared laser is preferably used. The laser may be applied to the object as it is, or may be irradiated using a lens or the like so as to be focused on the object.
- the infrared laser, YAG Les one The one (N d-YAG laser), N d: YV_ ⁇ 4 laser, C 0 2 laser, but may use any one, such as ruby laser, YAG laser or N d: It is convenient to use a YVO laser.
- a heating method hot water may be poured from an injection port.
- the present invention provides a medium that reversibly causes a phase transition between a sol and a gel due to temperature, a space holding a support, a method of heating the entire support to a temperature equal to or higher than the phase transition temperature of the medium, Means for locally heating the medium above the phase transition temperature of the medium, a flow path for injecting the medium into the space, a flow path for injecting the cleaning liquid into the space, and a flow for discharging the cleaning liquid from the space.
- An apparatus for collecting a minute object comprising: a path; and a flow path for discharging the medium from the space. These channels may also serve as other channels.
- the apparatus suitably further infrared irradiation device for irradiating the space as a heating means, preferably infrared laser, more preferably a YAG laser, or N d: YV0 4 may comprise a, single
- the one further infrared radiation A lens for condensing infrared light of the device into the space may be provided.
- the apparatus may further include a microscope capable of observing the space. This device may also be equipped with a shape identification device using a CCD camera or the like, or a device that automatically detects the fluorescence reaction, etc. to automate the identification work.
- FIG. 1 is a graph showing the change in viscosity of methinoresenorelose (Metroze SM) with respect to temperature. Shows hysteresis characteristics.
- FIG. 2 shows a method of fixing an object by locally heating only the periphery of the object.
- FIG. 3 shows a method of temporarily fixing only a minute object in the vicinity of the support by the method (thermal gelation) of the present invention and observing the same.
- Figure 4 shows how the target is fixed with a gel and collected with a pipette.
- FIG. 5 is a schematic diagram of a microchip.
- the upper figure is a view of the microchip as viewed from above, and the lower figure is a cross section thereof.
- FIG. 6 is a schematic diagram of another microchip.
- FIG. 3 is a view of the microchip as viewed from above.
- FIG. 7 shows a state in which the laser was focused on the transparent electrode (left figure) and the methylcellulose was taken in the state of taking in the target in Example 2 (right figure) in Example 2.
- Fig. 8 shows that in Example 3, the laser was focused on the transparent electrode (left figure) This is a picture of Lurose taking a target object and geroying (right figure).
- FIG. 9 is a schematic diagram of a microchip.
- a to D indicate heatable electrodes.
- the vertical and horizontal channels are the same as those in FIG. The invention's effect
- a sample is spread two-dimensionally, a special 1 "raw is compared, and a target is selected from randomly dispersed cells according to the present invention.
- a target is selected from randomly dispersed cells according to the present invention.
- the target is fixed with a gel and collected with a pipe.
- Fig. 4 shows the situation.
- Yeast (size: approx. 6 in) 0.1 Olg was mixed with 8 ml of a 2% aqueous solution of methylcellulose (Shin-Etsu Chemical Co., Ltd .; t3 ⁇ 4, Methorose SM-400), and the substrate (surface) was spin-coated. (A glass on which an electrode (ITO) is deposited).
- a target object can be observed with an inverted microscope.
- N d: YV0 4 laser Spectra-Physics Inc., J20- iR-2E, Wavelength: 1 064 nm
- an objective lens Olympus, UPlanApo III / 1.35
- irradiation the periphery of the substrate is locally heated by the laser, and methylcellulose is gerried with the target. Therefore, this target is fixed on the substrate.
- multiple targets were fixed to maintain the gel generated by laser irradiation for a certain period of time.
- FIGS. 5 and 6 Schematic diagrams of the microchip used in this example are shown in FIGS. 5 and 6.
- microchips have two intersecting channels. These two channels were molded by micromachining, and then molded using PDMS (polydimethylsiloxane) to produce microfluidic chips.
- Fig. 5 shows two channels crossing each other in a cross shape
- Fig. 6 shows two channels crossing a T type, and one discharge port for discharging sample and washing solution. Also serves as.
- One flow path is a water flow path for introducing the sol / gel phase change material containing the target substance to be separated, and then washing and removing unnecessary substances other than the fixed target substance, and the other flow path.
- the path is a flow path for collecting a fixed target.
- the transparent electrode is energized and warmed, the surface of the transparent electrode is gelled, and the sample and impurities present near the surface are once fixed on the transparent electrode. Then, water is injected from the washing water injection port to remove unfixed methyl cellulose and the like.
- the cooled transparent electrode is heated to a temperature close to the thermal gelation start temperature by passing current until the temperature does not exceed the thermal gelation start temperature, and the vicinity of the intersection of the two microchannels is observed with an inverted microscope, and the target object is observed. select.
- the laser is focused and irradiated on the transparent electrode near the target (the sample above).
- the transparent electrode near the focused area is heated, and the methylcellulose in the vicinity is gelled with the target taken in.
- Fig. 7 shows the situation. After that, wash water is flown from the wash water inlet port to remove unnecessary substances such as unfixed methyl cellulose and discarded from the discharge port.
- valve of the extraction port is opened to generate a flow for recovery, the energization of the transparent electrode is stopped, heating is stopped, and the target is recovered from the extraction port.
- Example 2 The same microchip as in Example 1 was used except that transparent electrodes (ITO) were provided above and below the observation area.
- ITO transparent electrodes
- Example 2 The same mixture of the sample and methylcellulose as in Example 1 was injected into this microchip.
- a method of fixing a target by heating a combination of overheating of the electrodes with electric current and local heating by laser irradiation is used.
- Fig. 9 shows the outline of the microchip.
- This microchip is set on the stage of the microscope.
- the observation area can be changed according to the observation magnification of the microscope, and moving the stage enables observation over a wide area.
- By preparing a plurality of electrodes it is possible to process a large amount of sample, and work efficiency can be improved.
- fixing by heating the electrodes it is necessary to increase the number of electrodes in order to fix only one target object of several microns. For this reason, a large number of electrodes are required to extract only one target from thousands to tens of thousands of minute samples, which complicates the system. Therefore, prepare multiple electrodes that can fix thousands to tens of thousands of minute samples at a time. In this embodiment, four independent electrodes A to D were prepared.
- Example 1 The sample of Example 1 was used, and valves were appropriately controlled at the time of sample introduction, washing, and collection as in Example 1.
- the separation task can be automated.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004503162A JP4228114B2 (ja) | 2002-05-07 | 2003-01-14 | 微小物体の回収方法及び装置 |
EP03701085.7A EP1504812B1 (en) | 2002-05-07 | 2003-01-14 | Method and apparatus for collecting micromaterial |
US10/508,639 US7824854B2 (en) | 2002-05-07 | 2003-01-14 | Method or apparatus for recovering micromaterial |
CA002476286A CA2476286C (en) | 2002-05-07 | 2003-01-14 | Method of recovering micromaterial and device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002/131656 | 2002-05-07 | ||
JP2002131656 | 2002-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003095088A1 true WO2003095088A1 (fr) | 2003-11-20 |
Family
ID=29416614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/000231 WO2003095088A1 (fr) | 2002-05-07 | 2003-01-14 | Procede et appareil pour le prelevement d'un micromateriau |
Country Status (5)
Country | Link |
---|---|
US (1) | US7824854B2 (ja) |
EP (1) | EP1504812B1 (ja) |
JP (1) | JP4228114B2 (ja) |
CA (1) | CA2476286C (ja) |
WO (1) | WO2003095088A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009045002A (ja) * | 2007-08-20 | 2009-03-05 | Oki Electric Ind Co Ltd | 細胞パターニング装置および細胞パターニング方法 |
JP2010046012A (ja) * | 2008-08-21 | 2010-03-04 | Konica Minolta Holdings Inc | 細胞培養基材及び細胞培養方法 |
CN108495712A (zh) * | 2015-11-23 | 2018-09-04 | 伯克利之光生命科技公司 | 原位生成的微流体隔离结构、试剂盒及其使用方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100883775B1 (ko) * | 2007-03-22 | 2009-02-18 | 명지대학교 산학협력단 | 모세관 전기영동 칩상에 집적된 전기화학적 검출기 및 이의제조방법 |
EP2198302B1 (en) * | 2007-09-27 | 2017-09-27 | Samyang Biopharmaceuticals Corporation | Sol-gel phase-reversible hydrogel templates and uses thereof |
WO2009061392A1 (en) * | 2007-11-05 | 2009-05-14 | President And Fellows Of Harvard College | Forming gel structures using microfluidic channels |
US8628953B2 (en) * | 2007-11-29 | 2014-01-14 | Hitachi Plant Technologies, Ltd. | Capturing carrier, capturing device, analysis system using the same, and method for capturing and testing microorganisms |
DE102013202054A1 (de) * | 2012-02-10 | 2013-08-14 | Arges Gmbh | Kontrastierungsverfahren mittels Laser sowie Vorrichtung zur Durchführung eines Kontrastierungsverfahren |
JP2015517825A (ja) * | 2012-05-29 | 2015-06-25 | ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニアThe Regents Of The University Of California | 細胞を流体サンプルから分離するためのシステム、方法及び部材 |
ES2624959T3 (es) | 2012-12-21 | 2017-07-18 | diamond invention UG (haftungsbeschränkt) | Sistema fluídico con material absorbente y gel de polímero conmutable |
WO2017100347A1 (en) * | 2015-12-08 | 2017-06-15 | Berkeley Lights, Inc. | Microfluidic devices and kits and methods for use thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06273382A (ja) * | 1993-03-17 | 1994-09-30 | Mitsuhiro Shimizu | 分離回収用電気泳動ゲルおよびそれを用いた分離回収法 |
JPH06343451A (ja) | 1993-06-08 | 1994-12-20 | Yamato Kubota | 固定化用器具、これを用いた生物組織の固定化法および培養法 |
JPH089966A (ja) * | 1994-06-30 | 1996-01-16 | Sumitomo Bakelite Co Ltd | 動物細胞の輸送方法 |
JP2003102465A (ja) * | 2001-09-27 | 2003-04-08 | Precision System Science Co Ltd | 標的物質の分離方法 |
EP1347353A1 (en) | 2000-11-29 | 2003-09-24 | Japan Science and Technology Corporation | Flow control method for micro system |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4689102A (en) * | 1985-01-25 | 1987-08-25 | Technographics Fitchburg Coated Products, Inc. | Method for the production of abrasion-resistant decorative laminates |
US5134070A (en) * | 1990-06-04 | 1992-07-28 | Casnig Dael R | Method and device for cell cultivation on electrodes |
US5632957A (en) * | 1993-11-01 | 1997-05-27 | Nanogen | Molecular biological diagnostic systems including electrodes |
WO1994029069A1 (fr) * | 1993-06-04 | 1994-12-22 | Seiko Epson Corporation | Appareil et procede d'usinage au laser, et panneau a cristaux liquides |
DE69735411T2 (de) * | 1996-10-09 | 2006-09-07 | Symyx Technologies, Inc., Santa Clara | Infrarot-spektroskopie und abbildung von bibliotheken |
AU2460399A (en) * | 1998-01-20 | 1999-08-02 | Packard Bioscience Company | Gel pad arrays and methods and systems for making them |
JPH11210750A (ja) | 1998-01-29 | 1999-08-03 | Koyo Seiko Co Ltd | 制御型磁気軸受装置 |
US6103528A (en) * | 1998-04-17 | 2000-08-15 | Battelle Memorial Institute | Reversible gelling culture media for in-vitro cell culture in three-dimensional matrices |
US6139831A (en) * | 1998-05-28 | 2000-10-31 | The Rockfeller University | Apparatus and method for immobilizing molecules onto a substrate |
JPH11346756A (ja) | 1998-06-09 | 1999-12-21 | Moritex Corp | 微小検体分離用セルプレート |
US6093370A (en) * | 1998-06-11 | 2000-07-25 | Hitachi, Ltd. | Polynucleotide separation method and apparatus therefor |
US6488872B1 (en) * | 1999-07-23 | 2002-12-03 | The Board Of Trustees Of The University Of Illinois | Microfabricated devices and method of manufacturing the same |
JP2001095558A (ja) | 1999-07-26 | 2001-04-10 | Moritex Corp | 微小検体分離用セルプレート |
JP3542534B2 (ja) | 1999-11-19 | 2004-07-14 | 株式会社東海理化電機製作所 | 微小検体分離用ユニット |
EP1266570A4 (en) * | 2000-03-21 | 2006-05-31 | Yuichi Mori | COATING MATERIALS FOR BIOLOGICAL FABRICS, COATED BIOLOGICAL FABRICS AND METHOD FOR COATING BIOLOGICAL TISSUES |
-
2003
- 2003-01-14 EP EP03701085.7A patent/EP1504812B1/en not_active Expired - Lifetime
- 2003-01-14 CA CA002476286A patent/CA2476286C/en not_active Expired - Fee Related
- 2003-01-14 US US10/508,639 patent/US7824854B2/en not_active Expired - Fee Related
- 2003-01-14 JP JP2004503162A patent/JP4228114B2/ja not_active Expired - Fee Related
- 2003-01-14 WO PCT/JP2003/000231 patent/WO2003095088A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06273382A (ja) * | 1993-03-17 | 1994-09-30 | Mitsuhiro Shimizu | 分離回収用電気泳動ゲルおよびそれを用いた分離回収法 |
JPH06343451A (ja) | 1993-06-08 | 1994-12-20 | Yamato Kubota | 固定化用器具、これを用いた生物組織の固定化法および培養法 |
JPH089966A (ja) * | 1994-06-30 | 1996-01-16 | Sumitomo Bakelite Co Ltd | 動物細胞の輸送方法 |
EP1347353A1 (en) | 2000-11-29 | 2003-09-24 | Japan Science and Technology Corporation | Flow control method for micro system |
JP2003102465A (ja) * | 2001-09-27 | 2003-04-08 | Precision System Science Co Ltd | 標的物質の分離方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1504812A4 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009045002A (ja) * | 2007-08-20 | 2009-03-05 | Oki Electric Ind Co Ltd | 細胞パターニング装置および細胞パターニング方法 |
JP2010046012A (ja) * | 2008-08-21 | 2010-03-04 | Konica Minolta Holdings Inc | 細胞培養基材及び細胞培養方法 |
CN108495712A (zh) * | 2015-11-23 | 2018-09-04 | 伯克利之光生命科技公司 | 原位生成的微流体隔离结构、试剂盒及其使用方法 |
JP2019502365A (ja) * | 2015-11-23 | 2019-01-31 | バークレー ライツ,インコーポレイテッド | インサイチュー生成マイクロ流体分離構造、そのキット、及びその使用方法 |
JP2022019825A (ja) * | 2015-11-23 | 2022-01-27 | バークレー ライツ,インコーポレイテッド | インサイチュー生成マイクロ流体分離構造、そのキット、及びその使用方法 |
JP7222057B2 (ja) | 2015-11-23 | 2023-02-14 | バークレー ライツ,インコーポレイテッド | インサイチュー生成マイクロ流体分離構造、そのキット、及びその使用方法 |
US11666913B2 (en) | 2015-11-23 | 2023-06-06 | Berkeley Lights, Inc | In situ-generated microfluidic isolation structures, kits and methods of use thereof |
JP7296210B2 (ja) | 2015-11-23 | 2023-06-22 | バークレー ライツ,インコーポレイテッド | インサイチュー生成マイクロ流体分離構造、そのキット、及びその使用方法 |
Also Published As
Publication number | Publication date |
---|---|
CA2476286C (en) | 2008-03-18 |
EP1504812A4 (en) | 2006-08-23 |
US7824854B2 (en) | 2010-11-02 |
JP4228114B2 (ja) | 2009-02-25 |
US20050208465A1 (en) | 2005-09-22 |
EP1504812A1 (en) | 2005-02-09 |
CA2476286A1 (en) | 2003-11-20 |
JPWO2003095088A1 (ja) | 2005-09-08 |
EP1504812B1 (en) | 2014-01-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10591404B1 (en) | Cell capture system and method of use | |
US11020736B2 (en) | High definition microdroplet printer | |
DE112006001276B4 (de) | Verfahren und System für das Sammeln von Zellen im Anschluss an Laser-Mikrodissektion | |
US20110045994A1 (en) | Particle capture devices and methods of use thereof | |
JP6757730B2 (ja) | マスサイトメトリーによる分析用の構造化生体試料 | |
Huang et al. | Continuous nucleus extraction by optically-induced cell lysis on a batch-type microfluidic platform | |
JP4228114B2 (ja) | 微小物体の回収方法及び装置 | |
Arai et al. | Isolation and extraction of target microbes using thermal sol-gel transformation | |
WO2012178166A1 (en) | Method and apparatus for fractionating genetically distinct cells and cellular components | |
JP2004081084A (ja) | 核酸分析チップと核酸分析装置 | |
WO2004018616A1 (ja) | 細胞培養マイクロチャンバー | |
WO2021084814A1 (ja) | 微小粒子回収方法、微小粒子分取用マイクロチップ、微小粒子回収装置、エマルションの製造方法、及びエマルション | |
JP2023532183A (ja) | 細胞遺伝学的解析のためのデバイス及び方法 | |
JP2024036647A (ja) | 粒子確認方法、粒子捕捉用チップ、及び粒子分析システム | |
Maruyama et al. | Immobilization of individual cells by local photo-polymerization on a chip | |
JP3817389B2 (ja) | ポリヌクレオチド分取装置 | |
JP4216018B2 (ja) | 核酸回収チップと核酸回収装置 | |
JP4446486B2 (ja) | 微小物体の固定方法 | |
JP3877164B2 (ja) | 微小物体の固定方法 | |
Arai et al. | On-chip robotics for biomedical innovation: Manipulation of single virus on a chip | |
JP7476483B2 (ja) | 粒子操作方法、粒子捕捉用チップ、粒子操作システム、及び粒子捕捉用チャンバ | |
Voldman et al. | Particle Capture Devices and Methods of Use Thereof | |
JP2020174598A (ja) | 粒子操作方法、粒子捕捉用チップ、粒子操作システム、及び粒子捕捉用チャンバ | |
Chakrabarty | Document Title: Holographic Optical Trapping in Forensic Research and Development: Application to Rape Kit Analysis | |
Maruyama et al. | Laser Manipulation and Fabrication of Functional Microtool Using Photo-crosslinkable Resin |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004503162 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2476286 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003701085 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10508639 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2003701085 Country of ref document: EP |