WO2005095510A1 - 感熱応答性ポリマー組成物及びその用途 - Google Patents
感熱応答性ポリマー組成物及びその用途 Download PDFInfo
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- WO2005095510A1 WO2005095510A1 PCT/JP2005/005686 JP2005005686W WO2005095510A1 WO 2005095510 A1 WO2005095510 A1 WO 2005095510A1 JP 2005005686 W JP2005005686 W JP 2005005686W WO 2005095510 A1 WO2005095510 A1 WO 2005095510A1
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- coating film
- dot pattern
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/544—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals the carrier being organic
- G01N33/545—Synthetic resin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/24—Homopolymers or copolymers of amides or imides
- C09D133/26—Homopolymers or copolymers of acrylamide or methacrylamide
Definitions
- the present invention relates to a thermosensitive polymer composition having crosslinkability and its use.
- PNIPAAm Poly (N-isopropylacrylamide)
- Aqueous solution of PNIPAAm undergoes phase separation due to temperature change, dissolves in water at 31 ° C or lower, and precipitates insoluble at higher temperature.
- N-isopropylacrylamide N-isopropylacrylamide
- NIPAAm NIPAAm
- PNIPAAm radical initiator
- NIPAAm is also known to copolymerize with other functional monomers, and the resulting polymer responds to various stimuli such as light, electric field, pH change, and solvent exchange as well as temperature change.
- thermosensitive polymer is used as a material for fixing a biomaterial! / Puru (Japanese Patent Application Laid-Open No. 2003-102466 (Patent Document 1), No. 23876 (Patent Document 2)).
- PNIPAAm coating film is very easily dissolved in water or a polar organic solvent. Therefore, when a biomaterial such as a cell is fixed by using a PNIPAAm coating film, a portion that has been in contact with water is melted more and more.
- the PNIPAAm dissolves in the resist solvent and the two layers are mixed.
- an object of the present invention is to provide a material that is insoluble in water, an aqueous solution, and an organic solvent and has a heat-responsive property. It is a further object of the present invention to provide a chip or the like using a material having this thermoresponsive property.
- the present invention for solving the above problems is as follows.
- a composition comprising an N-alkylacrylamide copolymer having a repeating unit represented by the general formula (1) and having a weight average molecular weight of 800 to 500,000, and a crosslinking agent.
- R and R represent the same or different hydrogen atom or carbon atom.
- the hydrocarbon structure having a functional group capable of cross-linking with the cross-linking agent is an atalylate structure, a meta-talylate structure, an acrylamide structure, or a methacrylamide structure having a functional group cross-linkable with the cross-linking agent in an ester portion.
- composition according to [1] or [2], wherein the functional group capable of crosslinking with the crosslinking agent is a hydroxy group, a carboxy group, or an epoxy group.
- the cross-linking agent is an epoxy-based cross-linking agent, a melamine-based cross-linking agent, a glycodyl-based cross-linking agent, or a compound having two or more hydroxy groups or carboxy groups. object.
- Epoxy crosslinking agents include trimethylolpropane triglycidyl ether, 1,2-cyclohexyldicarboxylate diglycidyl ester, 1,2-naphthalenedicarboxylic acid diglycidyl ester, 1,3-naphthalenedicarboxylic acid diglycidyl ester Ester, 1,4 naphthalenedicarboxylic acid diglycidyl ester, 1,5 naphthalenedicarboxylic acid diglycidyl ester, 1,6 naphthalenedicarboxylic acid diglycidyl ester, 1,7 naphthalenediic acid Rubonic acid diglycidyl ester, 1,8 naphthalenedicarboxylic acid Diglycidyl ester, 2,3 naphthalenedicarboxylic acid diglycidyl ester, 2,6 naphthalenedicarboxylic acid diglycidyl ester, 2,7-naphthalenedicarboxylic acid diglycidyl ester
- composition according to [6] The composition according to [4], wherein the melamine-based cross-linking agent is hexamethoxymethylmelamine, hexethoxymethylmelamine, or hexapropoxymethylmelamine.
- Glycodyl-based crosslinking agents include 1,3,4,6-tetrakis (methoxymethyl) glycodyl, 1,3,4,6-tetrakis (ethoxymethyl) glycodyl, and 1,3,4,6-tetrakis ( The composition according to [4], which is (propoxymethyl) glycoduryl.
- Compounds having two or more hydroxy or carboxy groups include 1,2-dihydroxynaphthalene, 1,3-dihydroxynaphthalene, 1,4-dihydroxynaphthalene, 1,5 dihydroxynaphthalene, 1,6-dihydroxynaphthalene , 1,7-dihydroxynaphthalene, 1,8-dihydroxynaphthalene, 2,3-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 1,3-cyclopentanediol, 2,6quinolinediol, 2,3-dihydroxyquinoxaline, 1,4-dioxanediol, 1,4-cyclohexanedimethanol, polybutyl alcohol, 1,2 naphthalenedicarboxylic acid, 1,3 naphthalene dicarboxylic acid, 1,4 naphthalenedicarboxylic acid, 1,4 5 naphthalenedicarboxyl
- the substrate on which the composition is applied is a silicon substrate, a glass substrate, a plastic substrate, a myric substrate, a ceramic substrate, or a metal substrate.
- the application of the composition to the substrate includes a step of dissolving the composition in a solvent, a step of dropping the obtained solution on the substrate, and a step of evaporating the solvent by rotating the substrate to obtain a coating film.
- the heating of the coating film shall be performed using a hot plate or baking oven at a temperature range of 170 ° C or more and 300 ° C or less for 30 minutes or more and 24 hours or less. Manufacturing method described in any of them.
- the formation of the dot pattern on the substrate is carried out by ink jet printing a solution obtained by dissolving the composition in a solvent on the substrate, or by screen printing through a mask. Production method.
- Cross-linking by heating the dot pattern is performed at 90 ° C or more and less than 170 ° C for 10 seconds or more and less than 30 minutes using a hot plate or a baking oven in the presence of an acid catalyst [18] — The method according to [21].
- the substrate on which the dot pattern is formed is a silicon substrate, a glass substrate, a plastic substrate, a mica substrate, a ceramic substrate, or a metal substrate.
- thermoresponsive property it is possible to provide a material that is insoluble in water, an aqueous solution, and an organic solvent and has a thermoresponsive property. Further, according to the present invention, it is possible to provide an article such as a biosheet or a chip using a material having a heat-responsive property.
- the heat-responsive polymer composition of the present invention has a repeating unit represented by the general formula (1), and has a weight average molecular weight in the range of 800 to 500,000, an N-alkylacrylamide copolymer, and a crosslinking agent. It is a composition containing.
- the weight average molecular weight of the N-alkylacrylamide copolymer is preferably in the range of 5,000 to 100,000.
- R and R may be the same or different and each may be a hydrogen atom or
- alkyl group having 1 to 4 carbon atoms include a methyl group, an ethyl group, a propyl group, and a butyl group.
- both terminals of the general formula (1) are hydrogen.
- hydrocarbon structure having a functional group capable of cross-linking with a cross-linking agent examples include an atalylate structure, a meta-tarylate structure, an acrylamide structure, and a methacrylamide structure having a functional group cross-linkable with the cross-linking agent in an ester portion. There can be.
- the functional group capable of crosslinking with the crosslinking agent may be, for example, a hydroxy group, a carboxy group or an epoxy group.
- examples of the hydrocarbon structure having a crosslinkable functional group include, for example, hydroxyethyl acrylate, hydroxyethyl metharylate, hydroxyethyl acrylamide, hydroxyshethyl methacrylamide, and glycidyl atari.
- the crosslinking agent can be, for example, an epoxy-based crosslinking agent, a melamine-based crosslinking agent, a glycodyl-based crosslinking agent, or a compound having two or more hydroxy groups or carboxy groups.
- Epoxy crosslinking agents include, for example, trimethylolpropane triglycidyl ether, 1, 2 —Cyclohexanedicarboxylic acid diglycidyl ester, 1,2-naphthalenedicarboxylic acid diglycidyl ester, 1,3-naphthalenedicarboxylic acid diglycidyl ester, 1,4-naphthalenedicarboxylic acid diglycidyl ester, 1,5 naphthalenedicarboxylic acid Acid diglycidyl ester, 1,6-naphthalenedicarboxylic acid diglycidyl ester, 1,7 naphthalenedicarboxylic acid diglycidyl ester, 1,8 naphthalenedicarboxylic acid diglycidyl ester, 2,3 naphthalenedicarboxylic acid diglycidyl ester, 2,6 Naphthalenedicarboxylic acid diglycidyl ester, 2,7-naphthalenedicarboxylic
- the melamine-based cross-linking agent can be, for example, hexamethoxymethyl melamine, hexaethoxymethyl melamine or hexapropoxymethyl melamine.
- Glycodyl-based crosslinking agents include, for example, 1,3,4,6-tetrakis (methoxymethyl) glycodyl, 1,3,4,6-tetrakis (ethoxymethyl) glycoduryl, or 1,3,4,6 —Can be tetrakis (propoxymethyl) glycoduryl.
- Compounds having two or more hydroxy groups or carboxy groups include, for example, 1,2-dihydroxynaphthalene, 1,3-dihydroxynaphthalene, 1,4-dihydroxynaphthalene, 1,5-dihydroxynaphthalene, 1,6 —Dihydroxynaphthalene, 1,7-dihydroxynaphthalene, 1,8-dihydroxynaphthalene, 2,3-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 1,3-cyclopentanediol, 2, 6 Quinolinediol, 2,3-dihydroxyquinoxaline, 1,4-dioxanediol, 1,4-cyclohexanedimethanol, polyvinyl alcohol, 1,2 naphthalenedicarboxylic acid, 1,3-naphthalenedicarboxylic acid, 1,4 4 naphthalenedicarboxylic acid, 1,5 naphthalened
- the present invention includes a method for producing a substrate having a coating film, the method comprising the steps of: applying the above-mentioned thermosensitive polymer composition of the present invention to a substrate to form a coating film; It includes a step of crosslinking by heating.
- the substrate on which the thermosensitive polymer composition is applied is, for example, a silicon substrate, a glass substrate
- a plastic substrate a my substrate, a ceramic substrate, or a metal substrate.
- thermosensitive polymer composition to the substrate includes, for example, a step of dissolving the composition in a solvent, a step of dropping the obtained solution on the substrate, and evaporating the solvent by rotating the substrate. And obtaining a coating film.
- a coating film having a thickness of lOnm-100 m can be produced.
- Solvents for dissolving the composition include, for example, water, 1-methoxy-2-propanol, ethylene glycol monomethyl ether, methyl sorbate acetate, toluene, xylene, cyclohexanone, 2-ethyl propionate, —Ethyl hydroxy-2-methylpropionate, ethoxyacetate, hydroxyethyl acetate, methyl 2-hydroxy-3-methylbutanoate, methyl 3-methoxypropionate, ethyl 3-methoxypropionate, ethyl 3-ethoxypropionate, 3 — Methyl ethoxypropionate, methyl pyruvate, ethyl ethyl pyruvate, ethyl ethyl acetate, butyl acetate, ethyl ethyl lactate, butyl lactate can be used. These solvents can be used alone or in combination of two or more.
- the concentration of the composition dissolved in the solvent can be appropriately determined in consideration of a desired solution viscosity, a coating film thickness, and the like, and can be, for example, in a range of 0.5% by weight to 30% by weight. .
- the obtained solution is dropped on a substrate.
- the solution can be dropped on the substrate by, for example, a nozzle for applying a photoresist, a dropper, a syringe, or a nozzle for an inkjet printer.
- the amount of the solution to be dropped can be appropriately determined in consideration of the desired thickness of the coating film and the substrate area, and can be, for example, in a range of 10 L to 10 mL.
- the substrate on which the solution has been dropped is rotated to evaporate the solvent to obtain a coating film.
- the solvent can be evaporated by, for example, an air current generated by rotation, or by externally heating with a heater.
- the coating film can be heated, for example, using a hot plate or a baking furnace in a temperature range of 170 ° C to 300 ° C for 30 minutes to 24 hours.
- the article of the present invention includes a substrate having a coating film obtained by the production method of the present invention.
- the article is used to adhere or remove biological material from the coating by controlling the coating temperature.
- the article can be, for example, a biosheet.
- a biosheet is a sheet on which a biological substance can be immobilized on the sheet surface and, in some cases, the biological substance can be recovered from the sheet surface.
- a sheet for recovering only lymphocytes showing specific activity, and immobilizing epidermal cells and hepatocytes on the sheet After culturing to a predetermined size, sheets, cells, proteins, chromosomes, DNA, etc., to be recovered while maintaining the cultured tissue structure are fixed on a sheet, and mashing operations such as cutting and joining are performed. Sheet, and thereafter, the cut and joined biological material is peeled off, the sheet to be recovered, a plurality of nerve cells are fixed on the sheet to form a nerve network, and further, any nerve cell It can be a sheet that peels off only it and forms an arbitrary nerve network on the sheet.
- An uncrosslinked N-alkylacrylamide polymer has a unique lower critical point temperature (LCST) depending on the structure of the alkyl group. At temperatures below the lower critical point temperature, the molecular surface becomes hydrophilic or water-soluble and dissolves in water, but at temperatures above the critical point temperature, the molecular surface is hydrophobic and precipitates in water.
- the biosheet of the present invention also has a water-phobicity when the temperature is higher than the lower critical point temperature corresponding to the structure of the alkyl group of the N-alkylacrylamide in the thermosensitive polymer used for forming the coating film. And can exhibit adhesiveness to biological materials.
- the membrane surface becomes hydrophilic, the adhesion to the biological material is lost, and the biological material is peeled off.
- the lower critical point temperature of N-isopropylacrylamide polymer is about 32 ° C, and it has N-isopropylacrylamide structure.
- a solution or suspension in which a biological material is dissolved is dropped on a sheet while the biosheet is maintained at a temperature equal to or higher than the lower critical point temperature, or the substrate itself is placed on the sheet.
- a method of dipping in a liquid may be used.
- Means for maintaining the biosheet at or above the lower critical point temperature include a method in which the substrate is placed in a thermostat at or above the lower critical point temperature, or a method wherein the substrate is placed on a plate at or above the lower critical point temperature.
- the part where the biological material is to be adhered should be heated to the lower critical point temperature by irradiating an infrared laser or locally heating with a small heater. It is also possible.
- Examples of a method for removing the biological material include a method in which the temperature of the biosheet is lower than the lower critical point temperature. Further, the method may include a step of removing the detached biological material from the sheet by washing.
- Means for lowering the temperature of the biosheet below the lower critical point temperature include placing the substrate in a thermostat at a temperature lower than the lower critical point temperature, or placing the substrate on a plate at a temperature lower than the lower critical point temperature. .
- the biological material that can control adhesion and peeling with the biosheet of the present invention is not particularly limited. Examples thereof include cells such as lymphocytes, epidermal cells, hepatocytes, nerve cells, and stem cells, proteins, Chromosomes, DNA and the like can be mentioned.
- the present invention includes a method for producing a chip having a dot pattern, the method comprising the steps of forming a dot pattern on a substrate using the thermosensitive polymer composition of the present invention, and crosslinking the dot pattern by heating. To form a dot pattern containing the crosslinked product as a component.
- the step of performing As the substrate the same substrate as that used in the article can be used.
- the formation of the dot pattern on the substrate is performed, for example, by screen-printing a solution obtained by dissolving the composition in a solvent on the substrate using a force for inkjet printing or a mask.
- a contact print lithography method in which the solution is applied to the protrusions of a stamper having irregularities and pressed against the substrate to transfer the solution to the substrate, or after forming a coating film on the substrate and before thermal crosslinking.
- the dot pattern can also be formed by an embossing method in which a stamper having irregularities is pressed and the irregular pattern is transferred and then thermally crosslinked.
- the solvent for dissolving the composition the same solvent as described in the formation of the coating film can be used.
- the present invention also includes a method for producing a chip having a dot pattern other than those described above.
- This method comprises disposing a solution obtained by dissolving the heat-responsive polymer composition of the present invention and an acid generator in a solvent on a substrate. Applying a radiation to activate the acid generator via a mask to form a dot pattern, forming a dot pattern, and cross-linking the dot pattern by calorific heat; Forming a dot pattern containing a crosslinked product as a component.
- the acid generator is preferably an acid generator that generates an acid upon irradiation with actinic radiation.
- the actinic radiation may be, for example, a mercury lamp light, an electron beam, or an excimer laser.
- the acid generator include dimethyl salts such as triphenylsulfo-dimethyltriflate, triphenylsulfo-dimethylnonaflate, N-trifluoromethanesulfo-fluoronaphthylimide, and N-methanesulfo-fluoronaphthylimide. Examples thereof include sulfo-oxyimide, and further, sulfonate.
- the same solvent as described in the formation of the coating film can be used.
- the content of the acid generator can be appropriately determined in consideration of the exposure sensitivity required for notane formation, for example, in the range of 0.1 part by weight to 20 parts by weight with respect to 100 parts by weight of the thermosensitive polymer. be able to.
- Crosslinking by heating the dot pattern can be performed, for example, by using a hot plate or a baking furnace at a temperature in the range of 170 ° C to 300 ° C for 30 minutes when the coating film does not contain an acid catalyst. Less than Can be done within 24 hours.
- the dot pattern is cross-linked by heating using a hot plate or a baking oven at 90 ° C or more and less than 170 ° C for 10 seconds or more and less than 30 minutes. be able to.
- the acid catalyst may be a catalyst in which an acid is directly added to a coating solution or an acid generated by irradiation of a coating film containing the acid generator with radiation.
- examples of the catalyst include acids such as hydrochloric acid, bromic acid, sulfuric acid, nitric acid, methanesulfonic acid, toluenesulfonic acid, and trifluoromethanesulfonic acid.
- the chip of the present invention is a chip having a dot pattern obtained by the above-described manufacturing method of the present invention on a substrate. This chip is used to adhere or remove biological material from the dots by controlling the dot temperature.
- the size, shape, density, arrangement (shape of the pattern), etc. of the dots can be appropriately determined according to the purpose.
- the diameter of the dots can be, for example, in the range of 1-11000 m
- the shape of the dots can be circular or rectangular (e.g., square)
- the density of the dots can be, for example, 1 cm 2 per 10 one 30, 000, can 000 and be forces.
- the chip of the present invention is capable of controlling the adhesion and detachment of the biological material, while controlling the biological material.
- the biological material is not particularly limited, and includes, for example, cells such as lymphocytes, epidermal cells, hepatocytes, nerve cells, and stem cells, proteins, chromosomes, and DNA.
- the solution was poured into 300 ml of n-hexane to precipitate a polymer, which was separated by filtration and dried to obtain a white polymer.
- the structure of the obtained polymer is determined by various analytical methods.
- the polymer (4) was found to have a molar fraction of 80% for isopropylacrylamide structure and 20% for hydroxyethyl acrylate.
- the polystyrene-equivalent molecular weight of this polymer was determined in gel permeation chromatography (GPC) in tetrahydrofuran. The weight average molecular weight was 63,000 and the number average molecular weight was 45,000.
- the above coating solution was spin-coated at 3000 rpm on a glass substrate that had been hydrophobically treated with hexamethyldisilazane. After application, heat treat at 180 ° C for 30 minutes to A cross-linking reaction proceeds between the hydroxy groups in the tyl phthalate structure and the epoxy groups in the trimethylolpropane triglycidyl ether structure to obtain a 3 ⁇ m-thick crosslinked coating film.
- the control of the adhesion and detachment of the biological substance (lymphocyte) to and from the coating film was performed by changing the coating film temperature. While maintaining the coating film at 34 ° C. or 15 ° C., the lymphocyte suspension was added dropwise, allowed to stand for 15 minutes, and then washed with water at the same temperature as the holding temperature. By maintaining the coating temperature at 34 ° C, the lymphocytes adhered to the coating surface, and the lymphocytes remained without being washed away after washing (Photo 1 in Fig. 1). In contrast, when the coating temperature was maintained at 15 ° C, the lymphocytes on the coating surface were detached, and the lymphocytes were washed away by the washing operation (Photo 2 in Fig. 1).
- Example 2 The synthesis procedure of Example 1 was repeated, except that the hydroxylethyl acrylate polymer of Example 1 was changed to glycidyl methacrylate monomer (6).
- the structure of the obtained polymer was found to be a polymer (7) having a molar fraction of 80% for the N-isopropylacrylamide structure and a molar fraction of 20% for the dalicidyl methacrylate structure by various analytical methods.
- GPC gel permeation chromatography
- the coating solution was spin-coated at 3000 rpm on a silicon substrate that had been hydrophobically treated with trimethylchlorosilane. After coating, heat treatment at 180 ° C for 30 minutes to remove epoxy group in glycidyl methacrylate structure and hydroxy group in 1,4-cyclohexanedimethanol structure. A cross-linking reaction was allowed to proceed between the groups to obtain a cross-linked coating film having a thickness of 3 ⁇ m.
- the coating film was immersed in tetrahydrofuran, which is a good solvent for the polymer (7), for 1 minute, the remaining film thickness was measured, and the remaining film ratio (normalized with the initial film thickness being 1) was determined. The residual film ratio was 0.9, indicating that the coating film was sufficiently insoluble in the solvent due to the crosslinking reaction.o
- the control of the adhesion and detachment of the biological material (lymphocyte) to and from the coating film was performed by changing the coating film temperature.
- the lymphocyte suspension was added dropwise while the coating film was maintained at 34 ° C. or 15 ° C., allowed to stand for 15 minutes, and then washed with water at the same temperature as the holding temperature.
- the coating temperature was kept at 15 ° C, the lymphocytes on the coating surface were detached, and the lymphocytes were washed away by the washing operation.
- hydroxyethyl acrylate polymer (3) were controlled to synthesize various polymers with different mole fractions.
- the above coating solution was spin-coated at 3000 rpm on a glass substrate that had been subjected to a hydrophobic treatment with hexamethyldisilazane. After the application, the coating was heated at 180 ° C. for 30 minutes to progress the crosslinking reaction, and a coating film having a thickness of 3 ⁇ m was obtained.
- the adhesion and peeling of the biological substance (lymphocyte) to and from the coating film were controlled by changing the coating film temperature.
- the suspension is kept at 15 ° C, and the suspension is kept at 15 ° C. Melted, and it was impossible to control adhesion and peeling by temperature.
- the coating temperature is reduced to 15%.
- the lymphocytes on the surface of the coating film were peeled off, and the lymphocytes were washed away from the coating film by the washing operation.
- the coating temperature was maintained at 34 ° C, lymphocytes adhered to the surface of the coating, and the lymphocytes remained without flowing even after washing.
- the temperature-sensitive N-isopropylacrylamide structure has a N-isopropylacrylamide structure. For this reason, even when the coating temperature was changed from 15 ° C to 34 ° C, the lymphocytes did not adhere to the coating surface, and the adhesion and peeling could not be controlled by temperature.
- the above coating solution was spin-coated at a rotation speed of 3000 rpm on a glass substrate which had been subjected to a hydrophobic treatment with hexamethyldisilazane. After the application, the coating was heated at 180 ° C. for 30 minutes to progress the crosslinking reaction, and a crosslinked coating film having a thickness of 3 ⁇ m was obtained.
- Example 1 the control of adhesion and detachment of the biological substance (lymphocyte) to and from the coating film was performed by changing the coating film temperature.
- a coating film using a coating solution containing less than 10 parts by weight of the crosslinking agent with respect to 100 parts by weight of the polymer when the lymphocyte suspension is dropped while keeping the coating film at 15 ° C, the suspension becomes The coating film dissolved, and it was impossible to control the adhesion and peeling with temperature. Lymphocytes adhere to the coating surface by maintaining the coating temperature at 34 ° C for coating films using a coating solution containing 10 to 40 parts by weight of the crosslinking agent with respect to 100 parts by weight of the polymer.
- the lymphocytes remained without being washed away.
- the coating temperature was maintained at 15 ° C, the lymphocytes on the coating surface were detached, and the lymphocytes were washed away from the coating by the washing operation.
- the crosslink density becomes too high, which hinders the temperature sensitivity of the N-isopropylacrylamide structure.
- the coating temperature is changed from 34 ° C to 15 ° C, the lymphocytes remain adhered to the coating surface, the lymphocytes on the coating surface do not separate, and the adhesion and separation can be controlled by temperature. Power
- Example 1 For 100 parts by weight of the polymer (4) synthesized in Example 1, 15 parts by weight of trimethylolpropane triglycidyl ether (5) was dissolved in 1000 parts by weight of 1-methoxy-2-propanol, and further, One part by weight of trifluoromethanesulfonic acid was added as a catalyst. This was filtered using a Teflon filter having a pore size of 0.40 m to prepare a coating solution.
- the catalyst include acids such as hydrochloric acid, bromic acid, sulfuric acid, nitric acid, methanesulfonic acid, toluenesulfonic acid, and trifluoromethanesulfonic acid.
- the above coating solution was spin-coated at a rotation speed of 3000 rpm on a glass substrate which had been subjected to a hydrophobic treatment with hexamethyldisilazane. After coating, heat-treat at 130 ° C for 5 minutes to By proceeding, a crosslinked coating film having a thickness of 3 ⁇ m was obtained.
- the remaining film thickness was measured and the remaining film ratio (normalized with the initial film thickness being 1) was determined. The remaining film ratio was 0.9, and the acid catalyst was added. It was found that the cross-linking reaction proceeded sufficiently even at low temperature and for a short period of time due to the kama, and that the coating film was sufficiently insoluble in the solvent.
- the above coating solution was spin-coated on a glass substrate treated with hexamethyldisilazane, and heated at 90 ° C for 30 seconds to evaporate only the solvent to form a coating film having a thickness of 3 m. did.
- the coating film was exposed through a mask using a mask aligner using a high-pressure mercury lamp as a light source. After the exposure, a heat treatment was performed at 130 ° C. for 5 minutes, and a crosslinking reaction was allowed to proceed only in the exposed portion where the acid was generated. Thereafter, development was performed for 1 minute using tetrahydrofuran, followed by rinsing with hexane for 30 seconds. As a result, a negative type 10 / z m dot pattern was obtained.
- Example 1 the control of the adhesion and detachment of the biological substance (lymphocyte) to the dot pattern on the substrate was performed by changing the coating film temperature.
- the substrate temperature was maintained at 34 ° C, the lymphocytes adhered to the dot pattern surface, and remained without being washed away even after washing.
- the substrate temperature was maintained at 15 ° C., the lymphocytes on the dot pattern surface were separated, and the washing operation caused the lymphocytes to exert a force on the coating film.
- the obtained coating do not have absorption or fluorescence characteristics for light of 400-600 nm, and have the advantage that, in particular, when observing the fluorescence of a biological material, the observation is not hindered by the shading or fluorescence of the coating film itself!
- Example 1 the control of the adhesion and detachment of the biological substance (lymphocyte) to the dot pattern on the substrate was performed by changing the coating film temperature.
- the substrate temperature was maintained at 34 ° C, the lymphocytes adhered to the dot pattern surface, and remained without being washed away even after washing.
- the substrate temperature was maintained at 15 ° C., the lymphocytes on the dot pattern surface were separated, and the washing operation caused the lymphocytes to exert a force on the coating film.
- the above solution was sprayed in a dot pattern onto a glass substrate treated with hexamethyldisilazane using an inkjet printer. After spraying, heat treatment was performed at 90 ° C for 30 seconds to evaporate the solvent, and then heat treatment was performed at 180 ° C for 30 minutes to allow the crosslinking reaction to proceed. As a result, a dot pattern of 300 m was obtained.
- the biological substance responds to the dot pattern on the substrate.
- the control of adhesion and peeling was performed by changing the coating film temperature.
- the substrate temperature was maintained at 34 ° C, the lymphocytes adhered to the dot pattern surface, and remained without being washed away even after washing.
- the substrate temperature was maintained at 15 ° C., the lymphocytes on the dot pattern surface were separated, and the washing operation caused the lymphocytes to exert a force on the coating film.
- a photoresist (OFPR-800; manufactured by Tokyo Ohka) is spin-coated on the heat-sensitive responsive coating after the heat treatment (crosslinked) prepared in Example 1, and a resist film having a thickness of 1.5 m is used as an upper layer. Newly formed.
- the resist film was exposed through a mask using a mask aligner using a high-pressure mercury lamp as a light source. After the exposure, development was carried out using an alkaline developer to obtain a resist film having a circular hole pattern with a diameter of 10 / zm. As a result, a chip having a structure in which the lower layer of the thermosensitive coating appeared on the surface only through the hole pattern portion of the upper resist film and the hole was obtained (FIG. 4).
- the control of the adhesion and detachment of the biological substance (lymphocyte) to and from the heat-sensitive responsive coating appearing on the surface through the hole pattern on the chip was performed using the heat-sensitive responsive coating.
- lymphocytes adhere one by one to the heat-sensitive coating part that appears on the surface through the hole pattern, and even after washing, only the lymphocytes in the heat-sensitive coating part flow. It remained without being.
- the substrate temperature was maintained at 15 ° C, the lymphocytes in the thermosensitive coating were separated, and the lymphocytes could be easily recovered by absorbing and pouring in with a capillary.
- a resist having no absorption or fluorescence characteristics with respect to light of 400 to 600 nm a resist having a diazonaphthoquinone group or an azide group as a photosensitive group was used.
- a chemically amplified dist using a photoacid generator that reacts only to light having a wavelength of 400 nm or less was excellent.
- a biocompatible resist a copolymer having a hydroxyethyl methacrylate structure of 50 mol% or more, a copolymer having a methoxyethyl acrylate structure of 50 mol% or more, or a base polymer of the resist, or Using a copolymer having a phosphatidylcholine structure of 50 mol% or more, the resist was excellent!
- the control of the adhesion and detachment of the biological substance (lymphocyte) to and from the heat-responsive coating film appearing on the surface through the hole pattern on the chip was performed using the heat-sensitive coating film.
- the substrate temperature was maintained at 15 ° C, lymphocytes in the heat-sensitive responsive coating were peeled off, and the lymphocytes could be easily collected by sucking them in with a capillary.
- a biosheet chip capable of arbitrarily attaching and detaching cells and the like by temperature control can be provided, and screening (antigen, antibody, chemical substance, etc.) and diagnosis using cells can be provided. Further, it can be used for producing a cultured cell sheet or the like for regenerative medicine.
- FIG. 1 is a photograph showing a state of controlling adhesion and detachment of a biological substance (lymphocyte) to a coating film in Example 1.
- FIG. 2 shows the result of examining the relationship between the solubility of a coating film in a solvent and the molar fraction of a hydroxyethyl acrylate structure in Example 3.
- FIG. 3 shows the result of examining the relationship between the solubility of a coating film in a solvent and the ratio of a crosslinking agent to a polymer in Example 4.
- FIG. 4 is an explanatory cross-sectional view of a chip prepared in Example 9.
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Cited By (6)
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WO2007040118A1 (ja) * | 2005-09-30 | 2007-04-12 | Toyama Prefecture | 感熱応答性高分子を用いた穴パタン付き膜を有するチップ及びその製造方法 |
JP2007206325A (ja) * | 2006-02-01 | 2007-08-16 | Fujinon Corp | 光学素子、光学ユニット、および撮像装置 |
JP2012148980A (ja) * | 2011-01-14 | 2012-08-09 | Toyama Univ | 機能性シート及びその製造方法 |
WO2014050633A1 (ja) * | 2012-09-26 | 2014-04-03 | 昭和電工株式会社 | 樹脂組成物、感光性樹脂組成物、及びカラーフィルター |
WO2015056789A1 (ja) * | 2013-10-17 | 2015-04-23 | 日産化学工業株式会社 | 感光性繊維およびその製造方法 |
WO2016133189A1 (ja) * | 2015-02-20 | 2016-08-25 | 日産化学工業株式会社 | 生体適合性塗布膜形成用組成物 |
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JPWO2016133189A1 (ja) * | 2015-02-20 | 2017-11-30 | 日産化学工業株式会社 | 生体適合性塗布膜形成用組成物 |
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