WO2005012554A1 - オンチップバイオアッセイ方法及びキット - Google Patents
オンチップバイオアッセイ方法及びキット Download PDFInfo
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- WO2005012554A1 WO2005012554A1 PCT/JP2004/001128 JP2004001128W WO2005012554A1 WO 2005012554 A1 WO2005012554 A1 WO 2005012554A1 JP 2004001128 W JP2004001128 W JP 2004001128W WO 2005012554 A1 WO2005012554 A1 WO 2005012554A1
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- chip
- cells
- micropore
- bioassay
- micropores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5025—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures for parallel transport of multiple samples
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502707—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the manufacture of the container or its components
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
- C12Q1/025—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
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- 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
- B01J2219/00279—Features relating to reactor vessels
- B01J2219/00306—Reactor vessels in a multiple arrangement
- B01J2219/00313—Reactor vessels in a multiple arrangement the reactor vessels being formed by arrays of wells in blocks
- B01J2219/00315—Microtiter plates
- B01J2219/00317—Microwell devices, i.e. having large numbers of wells
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- 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
- B01J2219/00718—Type of compounds synthesised
- B01J2219/0072—Organic compounds
- B01J2219/0074—Biological products
- B01J2219/00743—Cells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
- B01L2300/0864—Configuration of multiple channels and/or chambers in a single devices comprising only one inlet and multiple receiving wells, e.g. for separation, splitting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
- B01L2300/0874—Three dimensional network
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0887—Laminated structure
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2500/00—Screening for compounds of potential therapeutic value
- G01N2500/10—Screening for compounds of potential therapeutic value involving cells
Definitions
- the present invention relates to an on-chip bioassay method and an on-chip bioassay kit used for the method.
- microchips that integrate elements necessary for chemical analysis, such as microchannels, reactors, and electrodes for detection, on substrates such as silicon glass
- the analytical instruments used have come to be used.
- Microchip-based electrophoresis devices for DNA and proteins have already been developed and are commercially available.
- Analytical devices based on such microfluidic chips are used for integration of chemical analysis experiments, high throughput, resource saving, and resource saving. It enables space and mouth emission.
- Microarrays can also be cited as microchip-based analytical devices. This is a tool for processing DNA and proteins. Are arranged and immobilized on a solid substrate at high density as probe molecules.
- a cell-adhesive polymer to provide a culture substrate, a cell array, an automatic chemical injection device, and an Atsey system necessary for easily assembling various chemicals such as drugs and poisons.
- the area covered by the non-cell-attached hydrophilic polymer is surrounded by a non-cell-adhesive hydrophilic polymer, and the surrounding area is covered by a non-cell-adhesive strong hydrophobic material. It is particularly useful for high-density cell array substrates with a surface where the covered area is continuously enclosing (Japanese Patent Application Laid-Open No. 2003-33177), and for performing cell-based comparative analysis.
- the steps of introducing multiple samples on a lip that can simultaneously assess a wide range of biological or biochemical activities of many species; and b) a porous Assy matrix or not.
- Using at least one matrix to introduce one or more atsey components into the atsey c) i) washing the matrix used at the atsey to remove excess sample, atsey components or a combination thereof
- ii) a method of assaying the biological or biochemical activity of a sample which comprises the step of contacting the matrix used in the assay with the additional reagent in a bulk solution or as a liquid (Table 2). (Japanese Patent Publication No. 26390).
- An object of the present invention is to provide a bio-assay system which is highly versatile and capable of high-throughput analysis without being conscious of handling cells and reducing pre-operation such as culture. It is in.
- the present inventors have conducted intensive studies in order to solve the above problems, and have devised a microchip in which a plurality of types of cells are immobilized in a plurality of micropores on a substrate. By immobilizing the cultured cells in a state that can be used for the test, the user can immediately perform the test without any previous operation, and no special equipment is required.
- the present invention provides a method in which a microfluidic chip for cell introduction is fixed to the lower surface of a microporous chip composed of a substrate through which a plurality of micropores arranged in a lattice are penetrated, and A plurality of micro-cell introduction channels are formed in the micro-pores, and the cells suspended through the channels are formed into micro-pores of the micro-pore chip. Then, a test substance introducing microfluidic chip is placed on the upper surface of the microporous chip so that the plurality of fine test substance introducing flow paths intersect with the plurality of fine cell introducing flow paths.
- An on-chip bioassay method comprising contacting a cell in a micropore and detecting the degree of influence of a test substance on the cell after a predetermined time or at a predetermined time interval. Before pouring the suspended cells into the micropores of the microporous chip, attach a vented waterproof sealing membrane on the top surface of the microporous chip to prevent the cells from flowing out of the micropores. Claim 1 characterized by the above-mentioned.
- the on-chip bioassay method according to any one of claims 1 to 4 wherein cells are immobilized in micropores (claim 5), and a low-melting point agarose gel as cells suspended in a gel.
- the present invention relates to the on-chip bioassay method according to claim 5, wherein cells suspended in a cell are used.
- the present invention also provides the on-chip bioassay method according to any one of claims 1 to 6, wherein the microfluidic chip for cell introduction and the microfluidic chip for test substance introduction are the same microfluidic chip.
- (Claim 7) The method according to any one of claims 1 to 7, wherein the temperature is controlled for each cell row of the micropores of the micropore chip and for each test substance row orthogonal to Z or the cell row. From the biochip method (Claim 8) and the microchip after use 9.
- An on-chip bioassay method (claim 10) according to any one of claims 1 to 9, wherein one or two or more species selected from the group consisting of cells are used.
- the on-chip bioassay method according to any one of claims 1 to 10, wherein the cells are used (claim 11), and the use of two or more test substances.
- the on-chip bioassay method (Claim 12) according to any one of (1) and (2) wherein the means for in situ detecting the degree of the effect of the test substance on the cell has a spatial resolution of detecting a signal generated from the cell.
- CCD turtle Relates claim 1-1 2 according to any on-chip Baioatsusi method which is a photodiode array or photographic dry plate (claim 1 3).
- the present invention provides a micropore chip comprising a substrate through which a plurality of micropores arranged in a lattice for penetrating and solidifying cells suspended in a gel such as agarose, and one surface of each of the micropore chips
- An on-chip bioassay kit (Claim 14), characterized by comprising two microfluidic chips that form a plurality of microchannel groups by adhering to a microfluidic chip.
- the on-chip bioassay kit according to claim 14 further comprising an air-permeable and waterproof sealing membrane which is fixed to one surface of the micropores to prevent cells from flowing out of the micropores. 16.
- the on-chip bioassay kit according to any one of claims 14 to 16 (claim 17), and the microfluidic chip is made of polydimethylsiloxane.
- Clause 1 4 The on-chip bioassay kit according to any one of (1) to (17), and the micropores are through holes of 300 to 900 m X 300 to 900 m square.
- the on-chip bioassay kit according to any one of claims 14 to 18 (claim 19), and the width of the flow path of the microfluidic chip is equal to the length of the side of the micropore.
- the bioassay kit according to any one of claims 14 to 19 (claim 20), and the interval between the flow paths of the plurality of microfluidic chips is widened at the end.
- the present invention relates to an on-chip bioassay kit (claim 21) according to any one of claims 14-20.
- FIG. 1 is a photograph showing a micro-mosaic type assembly of the present invention.
- FIG. 2 is a diagram showing a microporous chip (A) and a microfluidic chip (B) of the present invention.
- FIG. 3 is a photograph showing an on-chip bioassay in a mutagen detection test of the present invention.
- FIG. 4 is a photograph showing the results of a mutagen detection test using the on-chip bioassay of the present invention.
- a microfluidic chip for cell introduction is fixed to the lower surface of a microporous chip composed of a substrate in which a plurality of micropores arranged in a lattice are penetrated.
- a plurality of fine cell introduction channels are formed between the microfluidic chip and the cell introduction microfluidic chip, and the suspended cells are flowed into the micropores of the micropore chip via the flow channels.
- a microfluidic chip for introducing a test substance is The input channel is fixed so as to intersect (preferably substantially orthogonal) with the plurality of fine cell introduction channels, and a plurality of fine test samples are inserted between the micropore chip and the test substance introduction microfluidic chip.
- a substance introduction flow path is formed, and the test substance is poured through the flow path and brought into contact with the cells in the micropores of the micropore chip, and the test substance is supplied after a predetermined time or at a predetermined time interval.
- the method is not particularly limited as long as it is a method for detecting the degree of influence on cells in situ, and “detecting in situ” here means that at least a microporous chip, a microfluidic chip for cell introduction, and a coating are used. This means that detection is performed using a microbioassay chip formed from a microfluidic chip for introducing a test substance as it is.
- micro-hole chip As the micro-hole chip, a plurality of micro-holes arranged in a matrix of m columns in the vertical direction and n rows in the horizontal direction (m and n may be the same or different, mX n is 2 or more) are penetrated.
- Any substrate made of silicon, glass, plastic, or the like may be used.
- the size of such a substrate is not particularly limited, but a substrate having a thickness of 300 to 100 m is usually used. .
- the shape of the micropores is not particularly limited, such as a square, a rectangle, a circle, an ellipse, and a triangle.A square or a circle, especially a square, is the width direction of the flow channel provided in the microfluidic chip. And the opening of the hole are preferable.
- the size of the micropore is preferably 100 m or less in length of one side or diameter, and for example, has an opening of 300 to 900 mX 300 to 900 / xm square.
- Micropores can be specifically exemplified, but the lower limit is not particularly limited. Micropores: Even if the dimensions of the microchannels are small, it is possible to distribute the suspension of bacterial cells or the test substance solution to the microchannels and micropores by capillary action, and to spread only by capillary action If this is difficult, it can be pumped by a high-pressure pump or suctioned by a vacuum pump. There is no particular limitation on the method of perforating the substrate to penetrate the fine holes.
- a case of perforating a silicon substrate will be described below.
- the substrate from which organic substances etc. were removed from the surface of the silicon substrate was placed in a thermal oxidation furnace, heated to 100 ° C or more under nitrogen ventilation, and steam was introduced into the furnace to oxidize the silicon substrate.
- An SiO 2 film is formed on the surface.
- both surfaces of the silicon substrate having the SiO 2 film formed thereon are made lipophilic by HMDS or the like, and then photo-resist is spin-coated and prebaked.
- the silicon substrate after prebaking is brought into close contact with a photomask whose pattern is output to a transparencies using a laser printer, and photolithography is performed by ultraviolet irradiation.
- etching of the SiO 2 film with hydrogen fluoride and anisotropic etching of the silicon substrate with KOH are performed from both sides of the substrate, and a fine through hole can be formed by piercing the silicon substrate.
- a temperature control mechanism on the substrate constituting the micropore chip for each column and / or row of micropores.
- a temperature control mechanism for each column or row of cells, cells of multiple types of microorganisms with different optimal growth temperatures can be used simultaneously, and temperature control for each column or row of the test substance
- An example of such a temperature control mechanism is a control mechanism in which a printed wiring board is used as a heater, and is attached to a bioassay chip to set an arbitrary location on the chip to a predetermined temperature.
- a control mechanism for setting an arbitrary location on a chip to a predetermined temperature by bonding a Peltier element in the same manner can be exemplified.
- Examples of cells that can be used for the on-chip bioassay of the present invention include microbial cells, animal cells, and plant cells. More specifically, Escherichia coli, Streptomyces, Bacillus subtilis, and Streptococcus Cockas Bacterial prokaryotic cells such as Coccus, eukaryotic cells such as yeast and Aspergillus, insect cells such as Drosophila S2 and Spodoptera Sf9, L cells, CH cells, COS cells, HeLa cells, C 127 cells, BAL BZc3T3 cells (including mutants deficient in dihydrofolate reductase, etc.), BHK21 cells, HEK293 cells, Bowes melano Examples include animal cells, plant cells, and the like, such as wild cells, oocytes, and T cells.
- the cell suspension is poured into the micropores of the micropore chip through a plurality of microcell introduction channels formed between the micropore chip and the microfluidic chip for cell introduction.
- the immobilized microorganism can be obtained by pouring cells suspended in a gel that solidifies by raising or lowering the temperature into micropores of a micropore chip.
- gels include agar gel, agarose gel, collagen gel, calcium alginate gel, cross-linked dextran gel, and synthetic polymer gel.
- a synthetic polymer gel When a synthetic polymer gel is used, polymerization is promoted by using a cross-linking agent, polymerization accelerator, or polymerization initiator in combination with a monomer of the synthetic polymer gel such as acrylamide or polyvinyl alcohol, and gelation occurs. become.
- a cross-linking agent such as acrylamide or polyvinyl alcohol
- a monomer of the synthetic polymer gel such as acrylamide or polyvinyl alcohol
- transformed cells can be used as cells in order to facilitate the in situ detection of the degree of the effect of the test substance on the cells.
- Examples of such a transformed cell include a transformant in which a reporter gene is ligated downstream of a promoter of a candidate gene that is expressed by contact with a test substance. It can be produced by Reporter genes include DNA encoding a fluorescent protein such as GFP (green fluorescent protein) and firefly.
- GFP fluorescent protein
- EYFP Enhanced Yellow Fluorescent Protein
- ECFP Enhanced CYAN fluorescent protein
- DsRed red
- a waterproof membrane (breathable and water-blocking) sealing membrane is attached to the upper surface of the micropore chip to remove the cells from the micropores. Cell outflow can be prevented.
- a ventilated waterproof sealing membrane When such a ventilated waterproof sealing membrane is used, the cell suspension is passed through a plurality of fine cell introduction channels formed between the microporous chip and the cell introduction microfluidic chip.
- the vented and waterproof sealing membrane is used to flow the test substance through a plurality of fine test substance introduction channels formed between the microporous tip and the test substance introduction microfluidic chip.
- the cell introduction microfluidic chip forms a plurality of fine cell introduction channels between the micropore chip and the cell introduction microfluidic chip in cooperation with the micropore chip, and suspends through the channel. Used to flow turbid cells into the micropores of a micropore chip.
- the width of the cell introduction channel formed by fixing the cell introduction microfluidic chip to the lower surface of the micropore chip is the length of the micropore side. It is preferable that the length be equal, and the length is such that the cell suspension can be spread over all of the plurality of micropores in one column or one row. By flowing different types of cell suspensions into the respective channels, it becomes possible to introduce different cells into each column or each row of the arranged micropores.
- the cell suspension and cell-encapsulated gel in the micropores in the same row or row are connected via microchannels formed when the micropore chip and the cell introduction microfluidic chip are fixed. There is no need to peel off the microfluidic chip for cell introduction or break the gel, etc., and the analysis can be performed as long as the microfluidic chip for cell introduction and the microporous chip are fixed. It is also possible to remove cells from the used microchip and reuse the microfluidic chip for cell introduction together with the microporous chip.
- the analyte-introducing microfluidic chip cooperates with the microporous chip to form a plurality of fine analyte-introducing channels between the microporous chip and the analyte-introducing microfluidic chip. It is used to bring the test substance into contact with the cells in the micropores of the micropore chip via a channel.
- the width of the analyte-introducing channel formed by fixing the analyte-introducing microfluidic chip on the upper surface of the microporous chip so as to be substantially orthogonal to the plurality of microcell-introducing channels is small.
- the length is preferably equal to the length of the side of the sample, and the length is preferably such that the test substance can be distributed to all of the micropores in one column or one row.
- test substance By flowing the test substance, it becomes possible to introduce a different test substance for each column or each row of the arranged micropores.
- the test substance that comes into contact with the cells in the micropores in the same column or row is connected via the microchannel formed when the micropore chip and the microfluidic chip for introducing the test substance are fixed. It is not necessary to peel off the microfluidic chip for introducing the test substance, and the analysis can be performed with the microfluidic chip for introducing the test substance and the microporous chip fixed.
- the microfluidic chip for introducing the test substance and the microporous chip fixed.
- test substance examples include various mutagenic substances, environmental hormones, drug candidates, heavy metal ions, neurotransmitters, solutions of chemical substances such as cytokines and interleukin, and body fluids such as serum. can do.
- a reactant for detecting an enzyme substrate or the like can be simultaneously poured together with the test substance.
- the microfluidic chip for cell introduction and the microfluidic chip for test substance introduction are preferably of the same shape and made of the same material.
- the material is not particularly limited as long as it can be fixed by, for example, but is preferably a material that can be detachably attached to the substrate constituting the microporous chip.
- PDMS polydimethylsiloxane
- a mold for a PDMS flow channel treated on one side only is prepared in the same manner as in the preparation of the substrate constituting the micropore chip, and unpolymerized PDMS and a polymerization initiator are used for the PDMS flow channel.
- PDMS can be advantageously used as a microfluidic chip material because it has excellent adhesion to PDMS itself, in addition to silicon, polymers such as glass and acrylic.
- the on-chip bioassay method of the present invention comprises a microporous chip, a microfluidic chip for cell introduction, and a microfluidic chip for test substance introduction.
- a suspension of one or more cells is introduced through a plurality of fine cell introduction channels formed between the chip and the microfluidic chip for cell introduction.
- a plurality of fine analytes formed between the microfluidic chips for introduction One or more analytes flow through the introduction flow channel to narrow the analytes. After a predetermined time or at predetermined time intervals, the degree of the effect of the test substance on the cells is detected in situ.
- signals generated from cells in each of the micropores can be detected by a CCD camera having a spatial resolution, photodiodes such as a photodiode array, various scanners, and a photoplate.
- the microfluidic chip for sample introduction is arranged perpendicular to the microfluidic chip for cell introduction, it is possible to perform tests with different combinations of cells and samples for each micropore at the same time, which is equivalent to the number of micropores. Test results can be obtained simultaneously.
- the microfluidic tip for cell introduction and the flow path design of the microfluidic chip for sample introduction can be changed according to the purpose, but the interval between the flow paths of a plurality of microfluidic chips is increased at the end. With such a configuration, the tubes for liquid sending are connected and the cell suspension / injection of the test substance is facilitated.
- a micropore chip comprising a substrate through which a plurality of micropores arranged in a lattice for pouring suspended cells are passed;
- a substrate through which a plurality of micropores arranged in a lattice for pouring suspended cells are passed;
- two microfluidic chips that are fixed to each side to form a plurality of fine flow channel groups.
- Escherichia coli for mutagenicity test was immobilized and a mosaic-type mosaic-type on-chip bioassay was performed.
- Escherichia coli for mutagenicity test Escherichia coli in which a firefly luciferase gene that generates bioluminescence was incorporated on a plasmid instead of the SOS gene whose expression was induced by a mutagen was used. Also, what is the micro-mosaic type Atsushi?
- a microfluidic chip to introduce a test bacterium into the vertical m rows of micropores and a sample into the horizontal ⁇ row, it is possible to simultaneously perform the mx ⁇ combination test. Atsushi will be.
- the test was performed with 5 columns and 5 rows.
- a silicon substrate was used for the microporous chip for cell immobilization, and PDMS, which had high adhesion to silicon and glass, was used for E. coli and a microfluidic chip for sample introduction.
- microporous chip 3. 0 X 3. 5 cm, the silicon down substrate having a thickness of 6 2 5 m installed in a thermal oxidation furnace, making the S i ⁇ 2 film having a thickness of 2 / m on the surface thereof did.
- Conductive etching was performed from both sides of the substrate, and fine through-holes of 700 m square were drilled in the silicon substrate at 5 locations in 5 columns and 5 rows, for a total of 25 locations.
- the spacing between the through holes was 1.5 mm (see Fig. 2A).
- microfluidic chip A silicon substrate was processed by the same operation as above to produce a ⁇ -shaped chip. Pour PDMS (Dow Corning SYL GARD 184) containing a polymerization initiator into this, and degas under reduced pressure in a glass desiccator to remove mixed air. It was left still. Thereafter, the mixture was polymerized by heating at 60 ° C for 4 hours, and peeled off from the mold ⁇ to obtain a microfluidic chip. The microfluidic chip was provided with five channels with a width of 700 m and a depth of 200 im at 1.5 mm intervals. Two chips were prepared for cell introduction and sample introduction (see Fig. 2B).
- a microfluidic chip was attached to one side of the microporous chip so that the micropores and the flow path overlap, and the test bacteria mixed with agarose was poured into the chip.
- a polytetrafluoroethylene membrane filter (manufactured by Adobe Systems Incorporated) was attached to the other surface of the microporous chip to prevent the test bacteria from flowing out.
- the chip into which the test bacterium was introduced was allowed to stand at 4 ° C for 10 minutes to gel agarose.
- the membrane filter was peeled off, and this was used as a chip for immobilizing test bacteria (see the upper part of Fig. 3).
- the same test bacteria were immobilized on all the channels in order to study the reproducibility.
- On-chip bioassay A similar microfluidic chip was attached to the surface of the test bacteria-immobilized chip on which the microfluidic chip was not attached, so as to be orthogonal to the cell introduction (see the lower part of Fig. 3).
- mitomycin C was poured as a mutagenic substance to induce expression.
- the optimal conditions for expression induction were 37 ° C and 1 hour.
- a mixed solution of luciferin and adenosine triphosphate was introduced, and the resulting luminescence was measured using a CCD camera (C-480, manufactured by Hamamatsu Photonics). Photographed (see Figs. 1 and 3).
- the microphone mouth bioassay chip and the on-chip bioassay method of the present invention By applying the microphone mouth bioassay chip and the on-chip bioassay method of the present invention to bioassays of various cells and different types, a simple test can be performed at a high throughput.
- manufacturers provide chips in which multiple types of cells according to test items are immobilized, as in current DNA arrays, and users need to perform pre-culture and other tasks. Various tests and inspections can be performed without any operation. Combined with a highly sensitive detection method, it is possible to integrate cells at high density .
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CA002534305A CA2534305A1 (en) | 2003-07-31 | 2004-02-04 | On-chip bioassay method and kit |
US10/566,861 US20060246416A1 (en) | 2003-07-31 | 2004-02-04 | On-chip bioassay method and kit |
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JP2003284208A JP2005046121A (ja) | 2003-07-31 | 2003-07-31 | オンチップバイオアッセイ方法及びキット |
JP2003-284208 | 2003-07-31 |
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US (1) | US20060246416A1 (ja) |
JP (1) | JP2005046121A (ja) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110207791A1 (en) * | 2008-10-28 | 2011-08-25 | Arena Pharmaceuticals, Inc. | Composition of a 5-ht2a serotonin receptor modulator useful for the treatment of disorders related thereto |
CN109655383A (zh) * | 2017-10-11 | 2019-04-19 | 南京大学 | 一种基于血小板投影成像的检测装置及其方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070243573A1 (en) * | 2006-02-14 | 2007-10-18 | Kimio Sumaru | Method and apparatus for immobilizing cells, and cell-immobilized substrate |
US20080020368A1 (en) * | 2006-07-20 | 2008-01-24 | Mengsu Yang | Method and apparatus for exposing cells to different concentrations of analytes or drugs |
ATE553387T1 (de) | 2006-10-19 | 2012-04-15 | Sekisui Chemical Co Ltd | Mikroanalyse-messvorrichtung und mikroanalyse- messverfahren unter verwendung davon |
ITMI20072099A1 (it) | 2007-10-30 | 2009-04-30 | St Microelectronics Srl | Metodo di fabbricazione di un dispositivo elettronico comprendente dispositivi mems incapsulati per stampaggio |
ATE539348T1 (de) * | 2009-08-13 | 2012-01-15 | Hoffmann La Roche | Testelement zur analyse einer körperflüssigkeit |
JP5854686B2 (ja) * | 2011-07-29 | 2016-02-09 | 亮平 神崎 | 匂いセンサ |
CN106179543A (zh) * | 2016-07-12 | 2016-12-07 | 重庆大学 | 一种基于焦糖倒模制作微流控芯片的方法及其应用 |
CN108620144A (zh) * | 2018-07-10 | 2018-10-09 | 南京宝沃生物科技有限公司 | 一种用于wb实验中的微流体芯片 |
CN111334403A (zh) * | 2018-12-18 | 2020-06-26 | 深圳先进技术研究院 | 基于微流控的微泡发生芯片及其制备方法和应用 |
JPWO2021045233A1 (ja) * | 2019-09-06 | 2021-03-11 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999030154A2 (en) * | 1997-12-12 | 1999-06-17 | Abbott Laboratories | Continuous format high throughput screening |
WO2000061198A1 (en) * | 1999-04-12 | 2000-10-19 | Hitachi Chemical Co., Ltd. | Method of producing probe arrays for biological materials using fine particles |
JP2001343385A (ja) * | 2000-06-02 | 2001-12-14 | Teruhisa Shibahara | プローブアレイ用固相基材、およびプローブアレイ |
EP1271557A2 (en) * | 2001-06-20 | 2003-01-02 | Fuji Photo Film Co., Ltd. | Stimulable phosphor sheet and method for manufacturing the same |
JP2003107198A (ja) * | 2001-09-28 | 2003-04-09 | Fuji Photo Film Co Ltd | 生化学解析システム |
-
2003
- 2003-07-31 JP JP2003284208A patent/JP2005046121A/ja active Pending
-
2004
- 2004-02-04 WO PCT/JP2004/001128 patent/WO2005012554A1/ja active Application Filing
- 2004-02-04 CA CA002534305A patent/CA2534305A1/en not_active Abandoned
- 2004-02-04 US US10/566,861 patent/US20060246416A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999030154A2 (en) * | 1997-12-12 | 1999-06-17 | Abbott Laboratories | Continuous format high throughput screening |
WO2000061198A1 (en) * | 1999-04-12 | 2000-10-19 | Hitachi Chemical Co., Ltd. | Method of producing probe arrays for biological materials using fine particles |
JP2001343385A (ja) * | 2000-06-02 | 2001-12-14 | Teruhisa Shibahara | プローブアレイ用固相基材、およびプローブアレイ |
EP1271557A2 (en) * | 2001-06-20 | 2003-01-02 | Fuji Photo Film Co., Ltd. | Stimulable phosphor sheet and method for manufacturing the same |
JP2003107198A (ja) * | 2001-09-28 | 2003-04-09 | Fuji Photo Film Co Ltd | 生化学解析システム |
Non-Patent Citations (3)
Title |
---|
MAEBANA, H. ET AL.: "Daichokin Koteika Chip o Mochiita Hen'i Gensei Busshitsu no Bioassay", DAI 64 KAI BUNSEKI KAGAKU TORONKAI KOEN YOSHISHU, 10 May 2003 (2003-05-10), pages 16, XP002986810 * |
MAEBANA, H. ET AL.: "Hen'i Gensei Busshitsu no On Chip Bioassay ni Okeru Kokandoka", DAI 52 KAI NIHON BUNSEKI KAGAKUKAI NENKAI KOEN YOSHISHU, 9 September 2003 (2003-09-09), pages 127, XP002986808 * |
MAEBANA, H. ET AL.: "Luciferase Idenshi o Mochiita Hen'I Gensei Shiken no Kokandoka to On Chip Keisoku heno Oyo", CSJ: THE CHEMICAL SOCIETY OF JAPAN HOKKAIDO SHIBU, 2003 NEN TOKI KENKYU HAPPYOKAI KOEN YOSHISHU, 31 January 2003 (2003-01-31), pages 52, XP002986809 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110207791A1 (en) * | 2008-10-28 | 2011-08-25 | Arena Pharmaceuticals, Inc. | Composition of a 5-ht2a serotonin receptor modulator useful for the treatment of disorders related thereto |
US9034911B2 (en) * | 2008-10-28 | 2015-05-19 | Arena Pharmaceuticals, Inc. | Composition of a 5-HT2A serotonin receptor modulator useful for the treatment of disorders related thereto |
CN109655383A (zh) * | 2017-10-11 | 2019-04-19 | 南京大学 | 一种基于血小板投影成像的检测装置及其方法 |
Also Published As
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JP2005046121A (ja) | 2005-02-24 |
CA2534305A1 (en) | 2005-02-10 |
US20060246416A1 (en) | 2006-11-02 |
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