WO2017116078A1 - 바이오 칩 및 바이오 칩의 제조 방법 - Google Patents
바이오 칩 및 바이오 칩의 제조 방법 Download PDFInfo
- Publication number
- WO2017116078A1 WO2017116078A1 PCT/KR2016/015172 KR2016015172W WO2017116078A1 WO 2017116078 A1 WO2017116078 A1 WO 2017116078A1 KR 2016015172 W KR2016015172 W KR 2016015172W WO 2017116078 A1 WO2017116078 A1 WO 2017116078A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- poly
- functional layer
- isopropyl acrylamide
- hydrogel
- hydrogel functional
- Prior art date
Links
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- 238000004458 analytical method Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 72
- 239000000178 monomer Substances 0.000 claims description 44
- 102000053602 DNA Human genes 0.000 claims description 40
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- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 claims description 36
- 239000000758 substrate Substances 0.000 claims description 35
- 238000002198 surface plasmon resonance spectroscopy Methods 0.000 claims description 31
- 239000003446 ligand Substances 0.000 claims description 30
- 239000003431 cross linking reagent Substances 0.000 claims description 28
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 26
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 26
- 239000010409 thin film Substances 0.000 claims description 25
- 239000002202 Polyethylene glycol Substances 0.000 claims description 24
- 229920001223 polyethylene glycol Polymers 0.000 claims description 24
- 229920001504 poly(N-isopropylacrylamide-co-acrylic acid) Polymers 0.000 claims description 23
- 239000000243 solution Substances 0.000 claims description 22
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 21
- 239000010931 gold Substances 0.000 claims description 21
- 229910052737 gold Inorganic materials 0.000 claims description 21
- QNILTEGFHQSKFF-UHFFFAOYSA-N n-propan-2-ylprop-2-enamide Chemical group CC(C)NC(=O)C=C QNILTEGFHQSKFF-UHFFFAOYSA-N 0.000 claims description 21
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 claims description 18
- DPBJAVGHACCNRL-UHFFFAOYSA-N 2-(dimethylamino)ethyl prop-2-enoate Chemical compound CN(C)CCOC(=O)C=C DPBJAVGHACCNRL-UHFFFAOYSA-N 0.000 claims description 18
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 18
- -1 Iodoacetyl Chemical group 0.000 claims description 18
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 18
- 239000004698 Polyethylene Substances 0.000 claims description 18
- PFKFTWBEEFSNDU-UHFFFAOYSA-N carbonyldiimidazole Chemical compound C1=CN=CN1C(=O)N1C=CN=C1 PFKFTWBEEFSNDU-UHFFFAOYSA-N 0.000 claims description 18
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 18
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 18
- GVGGWUXGMRTNIK-UHFFFAOYSA-N n-(2-amino-2-oxoethyl)prop-2-enamide Chemical compound NC(=O)CNC(=O)C=C GVGGWUXGMRTNIK-UHFFFAOYSA-N 0.000 claims description 18
- 229920002432 poly(vinyl methyl ether) polymer Polymers 0.000 claims description 18
- 229920000573 polyethylene Polymers 0.000 claims description 18
- 239000002105 nanoparticle Substances 0.000 claims description 16
- 239000003999 initiator Substances 0.000 claims description 15
- 229920001501 poly(N-isopropylacrylamide-co-methacrylic acid) Polymers 0.000 claims description 15
- 239000004593 Epoxy Substances 0.000 claims description 14
- 230000004044 response Effects 0.000 claims description 14
- LMDZBCPBFSXMTL-UHFFFAOYSA-N 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide Substances CCN=C=NCCCN(C)C LMDZBCPBFSXMTL-UHFFFAOYSA-N 0.000 claims description 10
- KHURTEAYLZEQHD-UHFFFAOYSA-N 3-n-propylpropane-1,1,3-triamine Chemical compound CCCNCCC(N)N KHURTEAYLZEQHD-UHFFFAOYSA-N 0.000 claims description 10
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 239000000499 gel Substances 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 10
- IEJPPSMHUUQABK-UHFFFAOYSA-N 2,4-diphenyl-4h-1,3-oxazol-5-one Chemical compound O=C1OC(C=2C=CC=CC=2)=NC1C1=CC=CC=C1 IEJPPSMHUUQABK-UHFFFAOYSA-N 0.000 claims description 9
- FPQQSJJWHUJYPU-UHFFFAOYSA-N 3-(dimethylamino)propyliminomethylidene-ethylazanium;chloride Chemical compound Cl.CCN=C=NCCCN(C)C FPQQSJJWHUJYPU-UHFFFAOYSA-N 0.000 claims description 9
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- 238000010438 heat treatment Methods 0.000 claims description 8
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- PEEHTFAAVSWFBL-UHFFFAOYSA-N Maleimide Chemical compound O=C1NC(=O)C=C1 PEEHTFAAVSWFBL-UHFFFAOYSA-N 0.000 claims description 5
- 150000002148 esters Chemical class 0.000 claims description 5
- BEOOHQFXGBMRKU-UHFFFAOYSA-N sodium cyanoborohydride Chemical compound [Na+].[B-]C#N BEOOHQFXGBMRKU-UHFFFAOYSA-N 0.000 claims description 5
- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical compound S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 claims description 5
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- 239000002262 Schiff base Substances 0.000 claims description 4
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- 229920001577 copolymer Polymers 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 3
- 125000003396 thiol group Chemical class [H]S* 0.000 claims description 3
- NQTADLQHYWFPDB-UHFFFAOYSA-N N-Hydroxysuccinimide Chemical class ON1C(=O)CCC1=O NQTADLQHYWFPDB-UHFFFAOYSA-N 0.000 claims 1
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- WYMSENKWVCCQGJ-UHFFFAOYSA-N n,n-dimethyl-1-triethoxysilylmethanamine Chemical compound CCO[Si](CN(C)C)(OCC)OCC WYMSENKWVCCQGJ-UHFFFAOYSA-N 0.000 description 1
- WMORUEAGCZUGBD-UHFFFAOYSA-N n-[[diethoxy(methyl)silyl]methyl]-n-ethylethanamine Chemical compound CCO[Si](C)(OCC)CN(CC)CC WMORUEAGCZUGBD-UHFFFAOYSA-N 0.000 description 1
- QGFMQZCGUPDJCN-UHFFFAOYSA-N n-[[dimethoxy(methyl)silyl]oxymethyl]aniline Chemical compound CO[Si](C)(OC)OCNC1=CC=CC=C1 QGFMQZCGUPDJCN-UHFFFAOYSA-N 0.000 description 1
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- NGDIAZZSCVVCEW-UHFFFAOYSA-M sodium;butyl sulfate Chemical compound [Na+].CCCCOS([O-])(=O)=O NGDIAZZSCVVCEW-UHFFFAOYSA-M 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/24—Homopolymers or copolymers of amides or imides
- C08L33/26—Homopolymers or copolymers of acrylamide or methacrylamide
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J1/46—Electric circuits using a capacitor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
-
- 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
-
- 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
-
- 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
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
Definitions
- a biochip capable of detecting and analyzing multiple bonds of a protein separately from a single bond and a method of manufacturing the same.
- a biochip and a method of manufacturing the same, in which multiple binding of a target protein can be detected separately from a single binding.
- a biochip may include: a hydrogel functional layer in which a binding mediator is formed and a physical property is changed in response to the administered target protein and the binding mediator; And a transducer for transmitting a displacement signal corresponding to the change of the physical property of the hydrogel functional layer to an analytical device, wherein the reaction is multiple binding of the target protein and the binding mediator. De-swelling occurs in at least a portion of the hydrogel functional layer by the multiple bonds.
- the reaction is a multiple bond of the target protein and the binding medium
- the de-swelling may occur in at least a portion of the hydrogel functional layer by the multiple bond.
- the physical property may be a refractive index of at least a portion of the hydrogel functional layer
- the transducer may include a waveguide
- the displacement signal may be an output signal of the waveguide
- the physical property is a refractive index of at least a portion of the hydrogel functional layer
- the transducer comprises a gold thin film
- the displacement signal is a surface plasmon resonance occurring in the gold thin film.
- SPR may be an output signal.
- the physical property may be a volume of at least a portion of the hydrogel functional layer
- the transducer may include a piezo element
- the displacement signal may be an output signal of the piezoelectric element
- the hydrogel functional layer may comprise a copolymer consisting of a main monomer and a comonomer.
- the main monomer is selected from the group consisting of N-isopropyl acrylamide, poly ( N- acryloylglycinamide), hydroxypropylcellulose, poly (vinylcaprolactame), and polyvinyl methyl ether
- the comonomer is allylamine (AA), Dimethylaminoethylmethacrylate (DMAEMA), dimethylaminoethylacrylate (DMAEA), acrylic acid (AAc), polyethylene glycol (PEG), and methacrylic acid (MAAc).
- the hydrogel functional layer may further include a crosslinking agent, and the hydrogel functional layer may include 55 to 98% of the main monomer, 2 to 40% of the comonomer, and 0.1 to 5% of the crosslinking agent. .
- the hydrogel functional layer is, poly (N-isopropyl acrylamide-co-allylamine) [poly (N-isopropyl acrylamide-co-allylamine): poly (NIPAM-co-AA)], Poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate): poly (NIPAM-co-DMAEMA)] poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate) , Poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate), poly (NIPAM-co-DMAEA)] , Poly (N-isopropyl acrylamide-co-acrylic acid) [poly (NIPAM-co
- the binding medium substrate is at least one of a ligand, a receptor, deoxyribonucleic acid (DNA), or ribonucleic acid (RNA), the surface of the hydrogel functional layer may be modified by forming the binding medium substrate have.
- the binding medium substrate is at least one of a ligand, a receptor, deoxyribonucleic acid (DNA), or ribonucleic acid (RNA), the surface of the hydrogel functional layer is nanoparticles to form the binding medium substrate Or can be modified using at least one of the proteins as a linker.
- the ligand or the receptor may be a carbodiimide crosslink, a Schiff base crosslink, an Azlactone crosslink, a carbonyl diimidazole (CDI) crosslink, an Iodoacetyl crosslink, a Hydrazide crosslink, a Mannich crosslink, or a maleimide At least one of crosslinking may be bonded to the hydrogel functional layer.
- a carbodiimide crosslink a Schiff base crosslink, an Azlactone crosslink, a carbonyl diimidazole (CDI) crosslink, an Iodoacetyl crosslink, a Hydrazide crosslink, a Mannich crosslink, or a maleimide
- At least one of crosslinking may be bonded to the hydrogel functional layer.
- the hydrogel functional layer may be divided into two or more regions for reaction with the target protein.
- the method of manufacturing the hydrogel functional layer included in the above-described biochip includes mixing 55 to 98% of the main monomer, 2 to 40% of the comonomer, and 0.1 to 5% of the crosslinking agent so that the sum of the monomers is 100%. Doing; Heating the aqueous solution including the monomer; Adding an initiator to initiate the reaction; And obtaining an aqueous hydrogel solution produced according to the reaction.
- Obtaining the aqueous hydrogel solution may include maintaining an oxygen-free environment while heating the aqueous solution.
- the main monomer is selected from the group consisting of N-isopropyl acrylamide, poly ( N- acryloylglycinamide), hydroxypropylcellulose, poly (vinylcaprolactame), and polyvinyl methyl ether, and the comonomer is allylamine (AA ), Dimethylaminoethylmethacrylate (DMAEMA), dimethylaminoethylacrylate (DMAEA), acrylic acid (AAc), polyethylene glycol (PEG) and methacrylic acid (MAAc).
- AA allylamine
- DMAEMA Dimethylaminoethylmethacrylate
- DAEA dimethylaminoethylacrylate
- acrylic acid AAc
- PEG polyethylene glycol
- MAAc methacrylic acid
- the method of manufacturing the biochip described above may include: synthesizing a hydrogel in the form of nanoparticles; Activating the surface of the transducer with at least one of a positive charge, a negative charge, an epoxy or a mercapto; And applying the hydrogel to the surface of the transducer to form the hydrogel functional layer.
- the step of synthesizing the hydrogel including the main monomer 55 to 98%, the comonomer 2 to 40%, and 0.1 to 5% of the crosslinking agent mixed to add a total of 100%; Heating the aqueous solution including the monomer; Adding an initiator to initiate the reaction; And it may include the step of obtaining an aqueous hydrogel solution produced by the reaction.
- the main monomer is selected from the group consisting of N-isopropyl acrylamide, poly ( N- acryloylglycinamide), hydroxypropylcellulose, poly (vinylcaprolactame), and polyvinyl methyl ether, and the comonomer is allylamine (AA) , Dimethylaminoethylmethacrylate (DMAEMA), dimethylaminoethylacrylate (DMAEA), acrylic acid (AAc), polyethylene glycol (PEG), and methacrylic acid (MAAc).
- AA allylamine
- DMAEMA Dimethylaminoethylmethacrylate
- DAEA dimethylaminoethylacrylate
- acrylic acid AAc
- PEG polyethylene glycol
- MAAc methacrylic acid
- the hydrogel functional layer is, poly (N-isopropyl acrylamide-co-allylamine) [poly (N-isopropyl acrylamide-co-allylamine): poly (NIPAM-co-AA)], poly ( N-isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate): poly (NIPAM-co-DMAEMA)], poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate), poly (NIPAM-co-DMAEA)], poly (N-isopropyl acrylamide-co-acrylic acid) [poly (N-isopropyl
- the step of modifying the surface by forming at least one of a ligand (ligand), a receptor (receptor), deoxyribonucleic acid (DNA), or ribonucleic acid (RNA) on the surface of the hydrogel functional layer It may include.
- At least one of the nanoparticles or proteins to form at least one of a ligand, a receptor, deoxyribonucleic acid (DNA), or ribonucleic acid (RNA) on the surface of the hydrogel functional layer using the linker may further include modifying the surface.
- the step of modifying the surface is EDC (1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride), DCC (dicyclohexyl carbodiimide), NaCNBH3 (sodium cyanoborohydride), Azlactone, CDI (Carbonyl diimidazole), Iodoacetyl, Hydrazide, DADPA at least one of the ligand, the receptor, the deoxyribonucleic acid, or the ribonucleic acid on the surface of the hydrogel layer using at least one crosslinking agent selected from the group consisting of (diaminodipropylamine), and NHS ester (N-hydroxysuccinimide esters). Linking one.
- the method of manufacturing the biochip described above may include activating a surface of the transducer with at least one of a positive charge, a negative charge, an epoxy or a mercapto; Applying an aqueous hydrogel solution to the surface of the transducer; And adding an initiator to the aqueous hydrogel solution to form the hydrogel functional layer in bulk gel form.
- the aqueous hydrogel solution may include 55 to 98% of the main monomer, 2 to 40% of the comonomer, and 0.1 to 5% of the crosslinking agent.
- the hydrogel functional layer is, poly (N-isopropyl acrylamide-co-allylamine) [poly (N-isopropyl acrylamide-co-allylamine): poly (NIPAM-co-AA)], poly ( N-isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate): poly (NIPAM-co-DMAEMA)], poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate), poly (NIPAM-co-DMAEA)], poly (N-isopropyl acrylamide-co-acrylic acid) [poly (N-isopropyl
- the step of modifying the surface by forming at least one of a ligand (ligand), a receptor (receptor), deoxyribonucleic acid (DNA), or ribonucleic acid (RNA) on the surface of the hydrogel functional layer It may include.
- At least one of the nanoparticles or proteins to form at least one of a ligand, a receptor, deoxyribonucleic acid (DNA), or ribonucleic acid (RNA) on the surface of the hydrogel functional layer using the linker may further include modifying the surface.
- FIG. 1 is a structural diagram of a biochip according to an embodiment.
- FIG. 2 is a view illustrating an operating principle of a biochip according to an embodiment.
- FIG. 3 (a) illustrates differential interference contrast (DIC) micrographs and temperature change and pH change characteristics of refractive index changes of a hydrogel functional layer according to multiple binding and single bonds of a target protein.
- DIC differential interference contrast
- FIG. 3 (b) illustrates a schematic diagram of a hydrogel functional layer whose surface is modified through carbodiimide crosslinking of a target protein and a ligand or a receptor, and multiple binding (dimerization) analysis using an optical microscope. .
- FIG. 5 shows an example of a biochip for detecting a change in refractive index of the hydrogel functional layer.
- FIG. 6 shows another example of a biochip for detecting a change in refractive index of a hydrogel functional layer.
- FIG. 7 shows an example of a biochip employing a multi-channel hydrogel functional layer.
- FIG. 8 illustrates an example of a method of synthesizing a hydrogel used to form a hydrogel functional layer according to one embodiment.
- FIG. 9 illustrates an example of a method of manufacturing a biochip for forming a hydrogel functional layer using the hydrogel synthesized through FIG. 7.
- FIG. 10 illustrates an example of a method of manufacturing a biochip using a hydrogel in the form of a bulk gel.
- FIG. 11 illustrates results of performance tests of a biochip according to an embodiment.
- 1 is a structural diagram of a biochip.
- a hydrogel functional layer in which a binding medium substrate is formed and physical properties change in response to the administered target protein and the binding medium substrate is changed.
- a transducer 120 which transmits a displacement signal corresponding to the change of the physical property of the hydrogel functional layer to an analysis device.
- the physical properties described above are usually defined by mechanical properties such as strength, hardness, and elongation of materials, electrical conductivity, specific resistance, transmittance, refractive index, and other electromagnetic properties, thermal conductivity, and coefficient of thermal expansion. And thermal properties such as specific heat, and temperature properties such as melting point and boiling point.
- the biochip 100 may be mounted on an analytical device (not shown) such as a biosensor, and may further include a physical interface (wired or wireless) for transmitting a displacement signal to the analytical device.
- an analytical device such as a biosensor
- a physical interface wireless or wireless
- the analytical device is a device that provides a user visually, audibly, and tactilely with analysis results related to multiple binding of a target protein and a binding medium.
- the analytical instrument may be, for example, a Surface Plasmon Resonance (SPR) instrument from Reichert®.
- the analysis equipment may be implemented as a mobile device.
- the biochip 100 may be designed to be attached to or detached from various analytical equipment and implemented in a replaceable manner.
- the hydrogel functional layer 110 provides a resolution capable of distinguishing multiple bonds and single bonds of the target protein and the binding mediator administered on the biochip 100. When the hydrogel functional layer 110 is used, it is possible to distinguish between single bonds and multiple bonds of the target protein and the binding mediator without labeling phosphor molecules.
- a binding mediator is formed on the surface of the hydrogel functional layer 110 to react with the target protein.
- the binding mediator may be at least one of a receptor, a ligand, DNA, or RNA. Depending on the embodiment, the binding mediator may be a mixture of two or more of the receptor, ligand, DNA, and RNA.
- the binding medium substrate formed on the hydrogel functional layer 110 may be specifically designed to detect multiple binding with a specific target protein.
- hydrogel functional layer 110 can distinguish between single and multiple bonds between the target protein and the binding media substrate. Can be.
- the physical property of the hydrogel functional layer 110 may be a refractive index.
- the physical property of the hydrogel functional layer 110 may be a volume of the hydrogel functional layer 110.
- the transducer 120 outputs a change signal of a physical property of the hydrogel functional layer 110 generated by multiple binding between the target protein and the binding medium substrate administered on the biochip 100.
- the transducer 120 may further include a physical interface unit (not shown) that transmits the displacement signal to an external analysis device.
- the transducer 120 may further include a signal processor (not shown) for processing the displacement signal and a physical interface unit for transmitting the processing result to an external device. It will be apparent to those skilled in the art that the function and structure of the transducer 120 may be appropriately modified according to the application of the biochip 100 described herein.
- the transducer 120 may be formed of the hydrogel functional layer 110 caused by multiple bonding between the target protein and the binding mediator. It may be a waveguide for outputting a displacement signal, which is either an optical signal or an electrical signal corresponding to the refractive index change, to the analysis equipment.
- Waveguides include Surface Plasmon Resonance (SPR) Waveguides, Ring Resonator Waveguides, Long-Period Fiber Grating Waveguides, Grating Couplers, or Lattice Waveguides It may be one of (Grated Waveguide).
- the transducer 120 may be formed by the multiple coupling between the target protein and the binding mediator of the hydrogel functional layer 110. It may include a piezo element (Piezo element) for outputting a displacement signal corresponding to the volume change to the analysis equipment.
- QCM Quadrat Crystal Microbalance
- the change in physical properties of the hydrogel functional layer 110 becomes larger.
- multiple bonds between the target protein and the binding mediator can be achieved using a lookup table (not shown) generated by comparing the amount of multiple bonds with changes in physical property of the hydrogel functional layer 110. Detect and measure the amount of multiple bonds.
- the lookup table may be recorded in a memory connected to an external analysis device such as a biosensor connected to the biochip 100 through a physical interface.
- FIG. 2 is a schematic diagram of a target protein reacting with a biochip 200 including a hydrogel functional layer 210 and a transducer 220 according to one side.
- the binding protein substrate 211 and 222 may be multiplexed between the target protein and the target protein according to the type of the target protein.
- a bond (dimerization bond) (for 221) or a single bond (for 222) occurs.
- de-swelling occurs in the region 231 where the multiple bonds of the hydrogel functional layer 210 occur, thereby changing the physical properties of the hydrogel functional layer 210.
- the physical properties of the hydrogel functional layer 210 hardly change.
- the physical property may be a refractive index
- the transducer 220 transmits a displacement signal corresponding to a change in refractive index due to the area 231 of the hydrogel functional layer 210 to the analysis equipment.
- the transducer 220 may be a waveguide. Due to the change in the refractive index of the hydrogel functional layer 210 due to the region 231, the effective refractive index of at least a portion of the waveguide which is the transducer 220 is changed.
- the input optical signal input to the biochip 200 through the light source of the analysis equipment (not shown) is shifted in the resonance frequency due to the effective refractive index change generated in the transducer 220, and the resonance frequency is shifted.
- the output light signal or corresponding electrical signal (displacement signal) is transmitted to the detector of the analysis equipment.
- the analytical instrument can analyze the displacement signal to determine the amount of multiple binding between the target protein and the binding mediator.
- the physical property may be a refractive index
- the transducer 220 transmits a displacement signal corresponding to a change in refractive index due to the region 231 of the hydrogel functional layer 210 to the analysis equipment.
- the transducer 220 may be a combination of a gold thin film and glass.
- SPR Surface Plasmon Resonance
- an input signal input to the biochip 200 through an analysis device may change its path to surface plasmon resonance generated in the gold thin film, or a leakage signal may occur on the gold thin film.
- displacement signals output light signals or corresponding electrical signals
- rerouted signals or leakage signals are transmitted to the detector of the analysis equipment.
- the physical property may be a volume
- the transducer 220 may transmit an electric signal (displacement signal) according to a volume change of the hydrogel functional layer 110 region 231 to an analysis device. (Piezo element) is included.
- the analysis equipment may analyze the displacement signal to measure the amount of multiple binding between the target protein and the binding mediator corresponding to the volume change of the region 231.
- Figure 3 shows the change in physical properties (refractive index) of the hydrogel functional layer according to the protein multiple bonds and single bonds through optical microscopic image changes.
- the binding mediator may be at least one of a receptor, a ligand, a DNA, and an RNA.
- the binding mediator may be a mixture of two or more of the receptor, ligand, DNA, and RNA.
- Various combinations of binding mediators can be designed to detect multiple bindings between specific target proteins and binding mediators.
- the biochip described in the present specification may effectively detect multiple binding between a target protein and a binding medium using a hydrogel functional layer.
- a hydrogel functional layer For example, if the bond between the target protein and the binding mediator is not multiple bonds, the physical properties of the hydrogel functional layer hardly change.
- the physical properties of the hydrogel functional layer change significantly due to the dewelling occurring in the hydrogel functional layer. That is, the hydrogel functional layer can be used to distinguish single bonds and multiple bonds between the target protein and the binding media substrate, and the amount of multiple bonds between the target protein and the binding media substrate can be utilized by changing the physical properties of the hydrogel functional layer. Can be detected easily.
- the physical properties of the hydrogel functional layer may vary locally or entirely depending on the method of making the hydrogel functional layer or the reactant.
- the hydrogel functional layer may be manufactured in a multi-channel manner. By dividing the physical area of the hydrogel functional layer into two or more, it is possible to detect a variety of multiple bonds between the target protein and the binding media in one biochip. According to one side, the area of one hydrogel functional layer may be divided into two or more, and the bonding medium substrate formed in the corresponding area may be different. According to another side, a transducer may be provided for each channel of the hydrogel functional layer, and a change in physical properties of the hydrogel functional layer corresponding to two or more channels may be sensed in one transducer. This will be described later in detail with reference to FIG. 6.
- the hydrogel functional layer may comprise a copolymer consisting of a main monomer and a comonomer.
- the hydrogel functional layer, the main monomer and the comonomer may be polymerized with a crosslinking agent.
- monomers capable of forming hydrogels that are sensitive to heat, ionic strength, or pH may be used.
- the main monomer may be selected from the group consisting of N-isopropyl acrylamide, poly ( N -acryloylglycinamide), hydroxypropylcellulose, poly (vinylcaprolactame), and polyvinyl methyl ether.
- the comonomer is a group consisting of allylamine (AA), dimethylaminoethyl methacrylate (DMAEMA), dimethylaminoethyl acrylate (DMAEA), acrylic acid (AAc), polyethylene glycol (PEG), and methacrylic acid (MAAc).
- AA allylamine
- DMAEMA dimethylaminoethyl methacrylate
- DAEA dimethylaminoethyl acrylate
- acrylic acid AAc
- PEG polyethylene glycol
- MAAc methacrylic acid
- the hydrogel functional layer may include 55 to 98% of the main monomer, 2 to 40% of the comonomer, and 0.1 to 5% of the crosslinking agent.
- the content of the main monomer is less than 55% may be lowered reactivity, if more than 98% may be reduced the ability to detect multiple binding of the target protein.
- the content of the comonomer is less than 2% or more than 40%, the ability to detect multiple binding of the target protein may be reduced.
- the content of the crosslinking agent is less than 0.1%, it may be difficult to form the hydrogel functional layer, and when the content of the crosslinking agent is greater than 5%, the ability to detect multiple binding of the target protein may be reduced.
- the hydrogel functional layer is, poly (N-isopropyl acrylamide-co-allylamine) [poly (N-isopropyl acrylamide-co-allylamine): poly (NIPAM-co-AA)], poly ( N-isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate): poly (NIPAM-co-DMAEMA)], poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate), poly (NIPAM-co-DMAEA)], poly (N-isopropyl acrylamide-co-acrylic acid) [poly (N-isopropyl
- the main monomer may be N-isopropyl acrylamide (temperature sensitive hydrogel), and the comonomer may be acrylic acid (pH sensitive hydrogel).
- the crosslinking agent may be MBA (N, N'-methylene-bis-acrylamide).
- the hydrogel functional layer may further include an initiator (initiator) as an element for starting the polymerization reaction, the ammonium persulfate (APS) may be used as the initiator.
- an initiator initiator
- APS ammonium persulfate
- the hydrogel functional layer may include 55 to 98% N-isopropyl acrylamide, 2 to 40% acrylic acid, and 0.1 to 5% BIS crosslinking agent.
- acrylic acid when used as the comonomer, it is preferable to include at least 2% or more of the materials constituting the hydrogel functional layer.
- the hydrogel functional layer may control the sensitivity to multiple bonds by adjusting the ratio between components, and thus is not limited to the examples described herein. According to one side, the higher the specific gravity of acrylic acid and the lower the specific gravity of the BIS, the reactivity (dewelling degree) of the hydrogel functional layer with respect to multiple bonds between the target protein and the binding media substrate can be increased.
- the transducer surface of the biochip according to one side may be a surface modified to increase the bonding force with the hydrogel functional layer.
- the part in which the physical properties of the hydrogel functional layer is changed the whole of the hydrogel functional layer, or may be a part from the surface of the hydrogel functional layer.
- the activation layer may be equal to the thickness of the entire hydrogel functional layer or smaller than the thickness of the hydrogel functional layer.
- the activation layer may be formed over a certain depth from the surface of the hydrogel functional layer.
- the surface of the hydrogel functional layer may be modified to form a binding medium substrate
- the surface of the hydrogel functional layer according to another side is at least one of nanoparticles or proteins to form a binding medium substrate It may be modified to use as a connector.
- the binding mediator may be at least one of a receptor, a ligand, DNA, or RNA.
- the binding mediator may be a mixture of two or more of the receptor, ligand, DNA, and RNA.
- the binding medium substrate formed on the hydrogel functional layer 110 may be specifically designed to detect multiple binding with a specific target protein.
- Binding media substrates formed in the hydrogel functional layer are carbodiimide crosslinks, Schiff base crosslinks, Azlactone crosslinks, carbonyl diimidazole (CDI) crosslinks, Iodoacetyl crosslinks, Hydrazide crosslinks, Mannich crosslinks, Alternatively, it may be formed on the hydrogel functional layer by maleimide crosslinking.
- a binding medium described in hydrogels function layer surface it is possible to form a binding medium described in hydrogels function layer surface.
- EDC (1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride
- DCC dicyclohexyl carbodiimide
- NaCNBH3 sodium cyanoborohydride
- Azlactone CDI (Carbonyl diimidazole) ), Iodoacetyl, Hydrazide, diaminodipropylamine (DADPA), and at least one crosslinking agent selected from the group consisting of NHS esters (N-hydroxysuccinimide esters)
- the crosslinking agent can be adjusted to control the bonding properties between the binding media substrate and the hydrogel functional layer.
- biochips including hydrogel functional layer + waveguide
- an optical signal applied from a light source is transmitted and transmitted into the waveguide, and some are transmitted to the surface of the optical waveguide in the form of an evanescent field. If chemical / biological phenomena occur on the surface of the waveguide, the refractive index change of the waveguide surface material may occur depending on the presence or the extent of the waveguide. As a result, the change in the effective refractive index of the waveguide changes the optical signal transmission characteristics inside the waveguide.
- an optical detector As such, a device that detects a change in chemical / biological phenomena on the surface of an SPR chip through a change in optical transmission characteristics inside a waveguide due to a change in refractive index of a surface material is called an optical detector or a refractive index detector.
- Optical or refractive index detectors that measure biomolecular binding relationships have higher throughput and better sensitivity than other biochemical chips, and do not require labeling of phosphors and can detect biomolecular binding relationships in real time. It represents a significant advantage.
- Several approaches have also quantified the refractive indices caused by changes in the concentration of biochemical molecules.
- no light detector technology capable of detecting target proteins having multiple bonds apart from general single bonds has been carried out.
- the technology for accurately detecting qualitative amounts of multiple-bound proteins from single-binding can be the basis for thrombus / immune / cancer-related therapies and drug development tests. Therefore, there is a need for a technique capable of effectively detecting and measuring them.
- the biochip 500 analyzes a displacement signal corresponding to a change in refractive index of the hydrogel functional layer 510 generated by multiple bonding between the hydrogel functional layer 510 and the target protein and the binding mediator. Transducer 520 to deliver to the equipment.
- Transducer 520 may be a waveguide.
- Waveguides include Surface Plasmon Resonance (SPR) Waveguides, Ring Resonator Waveguides, Long-Period Fiber Grating Waveguides, Grating Couplers, or Lattice Waveguides It may be one of (Grated Waveguide).
- SPR Surface Plasmon Resonance
- Ring Resonator Waveguides Ring Resonator Waveguides
- Long-Period Fiber Grating Waveguides Long-Period Fiber Grating Waveguides
- Grating Couplers Grating Couplers
- Lattice Waveguides It may be one of (Grated Waveguide).
- the transducer 520 outputs a displacement signal such as an optical signal or an electrical signal corresponding to at least one change among the transmission / reflection / resonance characteristics of the optical signal caused by the refractive index change of the hydrogel functional layer 510.
- the output displacement signal is transferred to the analysis equipment, which can analyze multiple binding between the target protein and the binding mediator corresponding to the displacement signal.
- the thickness of the hydrogel functional layer may be 10 to 1000 nm.
- the thickness of the hydrogel functional layer can be determined by the waveguide simulation (eg, finite-difference time-domain (FDTD) method or finite-differential method). difference method, FDM)) may be 10 to 1000 nm.
- the hydrogel functional layer may exhibit an effective refractive index change at a thickness of 10 to 1000 nm.
- the thickness of the hydrogel functional layer is less than 10 nm or more than 1000 nm, it may be difficult to detect the multiple bonds between the target protein and the binding medium because it is difficult to determine the amount of change in the refractive index.
- the biochip 600 analyzes a displacement signal corresponding to a change in refractive index of the hydrogel functional layer 610 due to multiple bonding between the hydrogel functional layer 610 and the target protein and the binding mediator. Transducer 620 to deliver to the equipment.
- the transducer 620 may be a layered structure composed of a gold thin film 621 and glass 622.
- Surface Plasmon Resonance occurs in the gold thin film 621 due to a change in refractive index in at least a portion of the hydrogel functional layer 610. More specifically, the input signal input to the biochip 600 through the analysis equipment (not shown) is changed to a propagation angle due to surface plasmon resonance generated in the gold thin film 621, or the gold thin film 621 Leakage signal may occur. In this way, displacement signals (output light signals or corresponding electrical signals), such as signals having changed propagation angles or leakage signals, are transmitted to the analysis equipment.
- the analytical instrument can analyze the multiplex signal between the target protein and the binding mediator by analyzing the displacement signal.
- biochips including a hydrogel functional layer + piezoelectric element
- the biochip according to one side includes a transducer that transmits a displacement signal corresponding to a volume change of a hydrogel functional layer caused by multiple binding between a target protein and a binding mediator to an analytical device.
- de-swelling occurs in at least a portion of the hydrogel functional layer due to multiple bonds between the target protein and the binding media substrate, thereby changing the volume of the hydrogel functional layer.
- a piezo element included in the transducer outputs a displacement signal according to the volume change of the hydrogel functional layer.
- the output displacement signal is transmitted to the analysis equipment.
- the analytical instrument can analyze multiple binding between the target protein and the binding mediator corresponding to the volume change.
- Figure 7 shows a biochip according to another side.
- the biochip 700 may include two or more physically distinct hydrogel functional layers 711, 712, and 713 for detecting multiple binding between one or more target proteins and a binding mediator.
- the hydrogel functional layer application region formed on the surface of the transducer 720 is physically divided into two or more, and different hydrogel functional layers 711, 712, 713 are formed in each region.
- the hydrogel functional layer application region formed on the surface of the transduce 720 is one, multi-channel bio in such a way to form different bonding media on the hydrogel functional layer (711, 712, 713) Chips can be implemented.
- the transducer 720 is displaced with respect to each of the areas A to C according to the change in the physical characteristics of each of the areas A to C 711, 712, and 713 due to the diswelling area in each of the areas A to C of the hydrogel functional layer. Deliver the signal to the analysis equipment.
- Displacement signals can be analyzed using analytical equipment and can analyze multiple binding of target proteins for each region corresponding to changes in the physical properties of the moistening region.
- FIG. 8 illustrates a hydrogel synthesis method for forming a hydrogel functional layer of a biochip according to one side.
- the hydrogel for forming the hydrogel functional layer of the biochip the sum of monomers including 55 to 98% of the main monomer, 2 to 40% of the comonomer, and 0.1 to 5% of the crosslinking agent so that the sum of the monomers is 100% Mixing 801; Heating (802) an aqueous solution comprising the monomers; Initiating the reaction by adding an initiator (803); And it may be prepared through the step 804 to obtain an aqueous hydrogel solution produced by the reaction.
- step 801 the hydrogel according to one side, the main monomer and the comonomer are polymerized with a crosslinking agent, and monomers capable of forming a hydrogel functional layer, preferably sensitive to heat or pH, may be used.
- the main monomer may be selected from the group consisting of N-isopropyl acrylamide, poly ( N -acryloylglycinamide), hydroxypropylcellulose, poly (vinylcaprolactame), and polyvinyl methyl ether.
- the comonomer is a group consisting of allylamine (AA), dimethylaminoethyl methacrylate (DMAEMA), dimethylaminoethyl acrylate (DMAEA), acrylic acid (AAc), polyethylene glycol (PEG), and methacrylic acid (MAAc).
- AA allylamine
- DMAEMA dimethylaminoethyl methacrylate
- DAEA dimethylaminoethyl acrylate
- acrylic acid AAc
- PEG polyethylene glycol
- MAAc methacrylic acid
- the hydrogel may include 55 to 98% of the main monomer, 2 to 40% of the comonomer, and 0.1 to 5% of the crosslinking agent.
- the content of the main monomer when the content of the main monomer is less than 55% can be reduced in reactivity, if more than 98% can reduce the ability to detect the dimerization of the protein.
- the content of the comonomer when the content of the comonomer is less than 2% or more than 40%, the ability to detect dimerization of the protein may be reduced.
- the content of the crosslinking agent when the content of the crosslinking agent is less than 0.1%, it may be difficult to form a hydrogel functional layer, and when the content of the crosslinking agent is greater than 5%, dimerization resolution of the protein may be degraded.
- the main monomer may be N-isopropyl acrylamide (temperature sensitive hydrogel), and the comonomer may be acrylic acid (pH sensitive hydrogel).
- the crosslinking agent may be MBA (N, N'-methylene-bis-acrylamide).
- the hydrogel is, poly (N-isopropyl acrylamide-co-allylamine) [poly (N-isopropyl acrylamide-co-allylamine): poly (NIPAM-co-AA)], poly (N- Isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate): poly (NIPAM-co-DMAEMA)], poly (N Isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate), poly (NIPAM-co-DMAEA)], poly (N Poly (N-isopropyl acrylamide-co-acrylic acid): poly (NIPAM-co-
- the hydrogel may include 55 to 98% N-isopropyl acrylamide, 2 to 40% acrylic acid, and 0.1 to 5% BIS crosslinking agent.
- acrylic acid when used as the comonomer, it is preferable to include at least 2% or more of the materials constituting the hydrogel functional layer.
- the aqueous solution including the main monomer and the comonomer is heated (802).
- An initiator is added to the heated aqueous solution to initiate the reaction (803).
- ammonium persulfate APS
- APS ammonium persulfate
- step 804 Obtaining an aqueous hydrogel solution produced by the reaction (804).
- step 804 a step of maintaining an oxygen-free environment while heating the aqueous solution may be further performed.
- the size uniformity of the hydrogel obtained in step 804 may be increased.
- step 804 may include dialysis to purify the unreacted monomer.
- the hydrogel described above can control the sensitivity of multiple binding between the target protein and the binding media substrate by adjusting the ratio between components.
- the composition and preparation method of such hydrogel is not limited to the examples described herein. According to one side, the higher the specific gravity of the acrylic acid and the lower the specific gravity of the BIS can increase the reactivity (de-swelling degree) of the hydrogel functional layer to the multiple bonds.
- FIG. 9 illustrates a method of manufacturing a biochip by forming a hydrogel synthesized according to the method of FIG. 8 on a transducer.
- Biochip manufacturing method comprises the steps of synthesizing a hydrogel in the form of nanoparticles (901); 902 activating the surface of the transducer with at least one of a positive charge, a negative charge, an epoxy or a mercapto; And applying (903) the hydrogel to the surface of the transducer to form a hydrogel functional layer.
- a nanoparticle hydrogel may be synthesized (901).
- the surface of the transducer is activated 902 with at least one of a positive charge, a negative charge, an epoxy or a mercapto.
- the step 902 of activating the transducer surface with at least one of positive charge, epoxy or mercapto may include: at least one of aminosilane, epoxysilane, and mercaptosilane. It may be to be carried out through an aqueous phase reaction using.
- the aminosilane compound is 3-aminopropyl triethoxysilane ((3-aminopropyl) -triethoxysilane), bis-3-triethoxysilylpropylamine (bis [(3-triethoxysilyl) propyl] amine), 3-amino Propyltrimethoxysilane ((3-aminopropyl) -trimethoxysilane), bis-3-trimethoxysilyl) propyl] amine, 3-aminopropylmethyldiethoxysilane ((3- aminopropyl) -methyl-diethoxysilane, (3-aminopropyl) -dimethyl-ethoxysilane, 3-aminopropyl-diethoxy-methylsilane, aminoethyl Aminoethyl-aminopropyl-trimethoxysilane, aminoethyl-aminopropyl-methyl-dimethoxysilane,
- the epoxy silane is 3-glycidoxypropyl-trimethoxysilane, 3-glycidoxypropyl-triethoxysilane, 3-glycidoxypropylmethyldiethoxysilane (3-glycidoxypropyl-methyl-diethoxysilane), 3-glycidoxypropyl-methyl-dimethoxysilane, 2- (3,4-epoxycyclohexyl) -ethyltrimethoxysilane (2- (3,4-epoxycyclohexyl) ethyl-trimethoxysilane) and 2- (3,4-epoxycyclohexyl) -ethyltriethoxysilane (2- (3,4-epoxycyclohexyl) ethyl-triethoxysilane) .
- 3-mercaptopropyltrimethoxysilane MTMS
- 3-mercaptopropyl triethoxysilane 3-mercaptopropyl triethoxysilane
- 3-mercaptosilane 3-mercaptopropyl triethoxysilane
- 3-mercaptosilane has a thiol group
- Captopropylmethyldimethoxysilane MPDMS ((3-mercaptopropyl) -methyl-dimethoxysilane) can be any one.
- the hydrogel is coated on the surface of the transducer to form a hydrogel functional layer (903).
- the transducer surface is positive charge (+), and the hydrogel functional layer is previously activated with negative charge (-). Can be.
- an aqueous free-radical precipitation polymerization method may be used.
- the surface of the hydrogel functional layer may be modified by forming a binding mediator, which is at least one of ligand, receptor, deoxyribonucleic acid (DNA), or ribonucleic acid (RNA).
- a binding mediator which is at least one of ligand, receptor, deoxyribonucleic acid (DNA), or ribonucleic acid (RNA).
- the surface of the hydrogel functional layer may include at least one of a nanoparticle or a protein as a linker to form a binding mediator, which is at least one of ligand, receptor, deoxyribonucleic acid (DNA), or ribonucleic acid (RNA). It can be modified using.
- the binding media may include carbodiimide crosslinks, Schiff base crosslinks, Azlactone crosslinks, Carbonyl diimidazole (CDI) crosslinks, Iodoacetyl crosslinks, Hydrazide crosslinks, Mannich crosslinks, or maleimides.
- At least one of crosslinking may be combined with the hydrogel functional layer.
- Hydrogels function by using a NH 2 + present in the carboxylic acid functional group (COOH) and the proteins present in the surface layer, it is possible to form a binding medium described in hydrogels function layer surface.
- crosslinking carbodiimide 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride (EDC), dicyclohexyl carbodiimide (DCC), sodium cyanoborohydride (NaCNBH3), Azlactone, carbonyl diimidazole (CDI), Iodoacetyl, At least one crosslinker selected from the group consisting of Hydrazide, diaminodipropylamine (DADPA), and NHS esters (N-hydroxysuccinimide esters) can be used.
- the crosslinking agent can be adjusted to control the bonding properties between the binding media substrate and the hydrogel functional layer.
- the hydrogel functional layer is EDC (1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride), DCC (dicyclohexyl carbodiimide), NaCNBH3 (sodium cyanoborohydride), Azlactone, CDI (Carbonyl diimidazole), Iodoacetyl,
- EDC 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride
- DCC dicyclohexyl carbodiimide
- NaCNBH3 sodium cyanoborohydride
- Azlactone CDI (Carbonyl diimidazole)
- Iodoacetyl Using at least one crosslinking agent selected from the group consisting of Hydrazide, DADPA (diaminodipropylamine), and NHS esters (N-hydroxysuccinimide esters), it can be modified by a method of forming a binding mediator on
- the biochip according to one side may be formed a hydrogel functional layer in the form of a bulk gel.
- FIG. 10 illustrates a biochip manufacturing method using a hydrogel in the form of a bulk gel.
- a method of initiating the polymerization reaction may be used.
- Biochip manufacturing method using a hydrogel in the form of a bulk gel according to one side, using a hydrogel solution in the form of a bulk gel, the surface of the transducer in the positive charge, negative charge, epoxy (epoxy) or mercapto (mecapto) Activating at least one 1001; Applying (1002) the aqueous hydrogel solution to the transducer surface; And adding an initiator to the aqueous hydrogel solution to form a hydrogel functional layer in bulk gel form (1003).
- the aqueous hydrogel solution may include 55 to 98% of the main monomer, 2 to 40% of the comonomer, and 0.1 to 5% of the crosslinking agent.
- the main monomer may be selected from the group consisting of N-isopropyl acrylamide, poly ( N -acryloylglycinamide), hydroxypropylcellulose, poly (vinylcaprolactame), and polyvinyl methyl ether.
- the comonomer is selected from the group consisting of allylamine (AA), dimethylaminoethyl methacrylate (DMAEMA), dimethylaminoethyl acrylate (DMAEA), acrylic acid (AAc), polyethylene glycol (PEG) and methacrylic acid (MAAc). Can be selected.
- the aqueous hydrogel solution poly (N-isopropyl acrylamide-co-allylamine) [poly (N-isopropyl acrylamide-co-allylamine): poly (NIPAM-co-AA)], poly (N -Isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl methacrylate): poly (NIPAM-co-DMAEMA)], poly ( N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate) [poly (N-isopropyl acrylamide-co-2- (dimethylamino) ethyl acrylate), poly (NIPAM-co-DMAEA)], poly ( N-isopropyl acrylamide-co-acrylic acid) [poly (NIPAM-
- the transducer surface is activated (1001) with at least one of a positive charge, a negative charge, an epoxy, or a mercapto. Since step 1001 is the same as step 902 described above, detailed description is omitted.
- the aqueous hydrogel solution is applied to the surface of the transducer (1002).
- the hydrogel functional layer thickness may be adjusted by adjusting the water level.
- An initiator is added to the aqueous hydrogel solution to form a hydrogel functional layer in the form of a bulk gel (1003). Since the manner of adding the initiator is the same as that described in step 1003 of FIG. 7, detailed description is omitted.
- it may further comprise the step of modifying the surface by forming a bonding medium substrate on the surface of the hydrogel functional layer.
- a binding medium substrate on the surface of the hydrogel functional layer it may further comprise the step of modifying the surface using another nanoparticle or protein as a linker.
- the binding mediator may be at least one of ligand, receptor, deoxyribonucleic acid (DNA), or ribonucleic acid (RNA), and may be selected from ligand, receptor, deoxyribonucleic acid (DNA), or ribonucleic acid (RNA). Two or more may be mixed.
- biochip modified the surface of gold thin film with PEG / COOH which is generally used as the biochip for SPR sensor
- biochip which formed the hydrogel functional layer on the surface of the gold thin film made by special technology.
- the two types of biochips were mounted on SPR sensors from Reichert®, an analytical instrument. Since the biochip having the hydrogel functional layer formed on the gold thin film surface has been described in detail with reference to FIG. 6, the detailed description thereof will be omitted.
- Biochip having a hydrogel functional layer formed on the surface of a gold thin film was modified by using a crystallization dihydrochloride (Cystamine dihydrochloride) to form a hydrogel functional layer.
- a crystallization dihydrochloride Cystamine dihydrochloride
- a bond mediator was formed on the "biochip modified gold thin film surface with PEG / COOH” and "biochip formed with a hydrogel functional layer on the gold thin film surface". At this time, when the binding state is measured after the introduction of the protein to be added later, only a single bond is generated or formed to separate multiple bonds.
- the target protein when the target protein is administered to two kinds of chips, the following four cases may occur when the biochip type and the binding state of the target protein are simultaneously considered.
- the same concentration of target protein was administered to each of the two types of biochips described above. Binding banning between the target protein and the binding mediator on the biochip starts, and after a certain time, the resultant value is measured through the SPR sensor.
- 11 is a result of a performance test of a biochip according to one embodiment.
- FIG. 11A shows the response size 317 of the SPR sensor for the case 1).
- the right side of (a) of FIG. 11 shows the response size 226 of the SPR sensor for the case 2).
- FIG. 11B shows the response size 287 of the SPR sensor for the case 3).
- 11 b shows the response size 504 of the SPR sensor for the case 4).
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Abstract
Description
Claims (28)
- 결합 매개 기재가 형성되고, 투여된 타겟 단백질과 상기 결합 매개 기재의 반응으로 물리적 특성이 변화하는 수화젤(hydrogel) 기능층; 및상기 수화젤 기능층의 상기 물리적 특성의 변화에 대응하는 변위(displacement) 신호를 분석 장비로 전달하는 트랜스듀서(transducer)를 포함하고,상기 반응은 상기 타겟 단백질과 상기 결합 매개 기재의 다중 결합이고,상기 다중 결합으로 상기 수화젤 기능층의 적어도 일부에서 디스웰링(de-swelling)이 발생하는,바이오 칩.
- 제1항에 있어서,상기 물리적 특성은 상기 수화젤 기능층의 적어도 일부의 굴절률이고,상기 트랜스듀서는 도파로(waveguide)를 포함하며,상기 변위 신호는 상기 도파로의 출력 신호인,바이오 칩.
- 제1항에 있어서,상기 물리적 특성은 상기 수화젤 기능층의 적어도 일부의 굴절률이고,상기 트랜스듀서는 골드 박막(gold thin film)을 포함하며,상기 변위 신호는 상기 골드 박막에서 일어난 표면 플라즈몬 공진(Surface Plasmon Resonance: SPR)에 대응하는 출력 신호인,바이오 칩.
- 제1항에 있어서,상기 수화젤 기능층은 메인단량체 및 공단량체로 이루어진 공중합체를 포함하는,바이오 칩.
- 제4항에 있어서,상기 메인단량체는, N-이소프로필 아크릴아미드, poly(N-acryloylglycinamide), hydroxypropylcellulose, poly(vinylcaprolactame), 및 polyvinyl methyl ether로 이루어진 군으로부터 선택되고,상기 공단량체는, 알릴아민(AA), 디메틸아미노에틸메타아크릴레이트 (DMAEMA), 디메틸아미노에틸아크릴레이트(DMAEA), 아크릴산 (AAc), 폴리에틸렌 글리콜(PEG), 및 메타아크릴산 (MAAc)으로 이루어진 군으로부터 선택되는,바이오 칩.
- 제4항에 있어서,상기 수화젤 기능층은 가교제를 더 포함하는,바이오 칩.
- 제6항에 있어서,상기 수화젤 기능층은,상기 메인단량체 55 내지 98%, 상기 공단량체 2 내지 40%, 및 상기 가교제 0.1 내지 5%로 이루어지는,바이오 칩.
- 제1항에 있어서,상기 수화젤 기능층은,폴리(N-이소프로필 아크릴아미드-co-알릴아민)[poly(N-isopropyl acrylamide-co-allylamine): poly(NIPAM-co-AA)], 폴리(N-이소프로필 아크릴아미드-co-2-(디메틸아미노)에틸 메타아크릴레이트)[poly(N-isopropyl acrylamide-co-2-(dimethylamino)ethyl methacrylate): poly(NIPAM-co-DMAEMA)], 폴리(N-이소프로필 아크릴아미드-co-2-(디메틸아미노)에틸 아크릴레이트)[poly(N-isopropyl acrylamide-co-2-(dimethylamino)ethyl acrylate), poly(NIPAM-co-DMAEA)], 폴리(N-이소프로필 아크릴아미드-co-아크릴산)[poly(N-isopropyl acrylamide-co-acrylic acid): poly(NIPAM-co-AAc)], 폴리(N-이소프로필 아크릴아미드-co-폴리에틸렌 글리콜-아크릴산)[poly(N-isopropyl acrylamide-co-polyethylene glycol-acrylic acid): poly(NIPAM-co-PEG-AAc)], 폴리(N-이소프로필 아크릴아미드-co-메타아크릴산)[poly(N-isopropyl acrylamide-co-methacrylic acid): poly(NIPAM-co-MAAc)], N-이소프로필 아크릴아미드, poly(N-acryloylglycinamide), hydroxypropylcellulose, poly(vinylcaprolactame), 및 polyvinyl methyl ether로 이루어진 군으로부터 선택되는 적어도 하나를 포함하는,바이오 칩.
- 제1항에 있어서,상기 결합 매개 기재는 리간드, 리셉터, 디옥시리보핵산(DNA), 또는 리보핵산(RNA) 중 적어도 하나이고,상기 수화젤 기능층의 표면은 상기 결합 매개 기재가 형성되어 개질된,바이오 칩.
- 제1항에 있어서,상기 결합 매개 기재는 리간드, 리셉터, 디옥시리보핵산(DNA), 또는 리보핵산(RNA) 중 적어도 하나이고,상기 수화젤 기능층의 표면은 상기 결합 매개 기재를 형성시키기 위해 나노입자 또는 단백질 중 적어도 하나를 연결기로 사용하여 개질된,바이오 칩.
- 제9항 또는 제10항 중 어느 하나의 항에 있어서,상기 리간드 또는 상기 리셉터는, 카르보디이미드(Carbodiimide) 교차결합, Schiff base 교차결합, Azlactone 교차결합, Carbonyl diimidazole (CDI) 교차결합, Iodoacetyl 교차결합, Hydrazide 교차결합, Mannich 교차결합, 또는 말레이미드(maleimide) 교차결합 중 적어도 하나로 상기 수화젤 기능층에 결합되는,바이오 칩.
- 제1항에 있어서,상기 수화젤 기능층은 상기 타겟 단백질과의 반응을 위한 둘 이상의 영역으로 구분되는,바이오 칩.
- 제1항의 바이오 칩에 포함된 상기 수화젤 기능층을 제조하는 방법에 있어서,메인단량체 55 내지 98%, 공단량체 2 내지 40%, 및 가교제 0.1 내지 5%를 포함하여 단량체의 합이 100%가 되도록 혼합하는 단계;상기 단량체를 포함하는 수용액을 가열하는 단계;개시제를 추가하여 반응을 개시(initiate)하는 단계; 및상기 반응에 따라 생성된 수화젤 수용액을 얻는 단계를 포함하는,바이오 칩의 수화젤 기능층 제조 방법.
- 제13항에 있어서.상기 수화젤 수용액을 얻는 단계는,상기 수용액을 가열하면서 무산소(oxygen-free) 환경을 유지하는 단계를 포함하는,바이오 칩의 수화젤 기능층 제조 방법.
- 제13항에 있어서,상기 메인단량체는, N-이소프로필 아크릴아미드, poly(N-acryloylglycinamide), hydroxypropylcellulose, poly(vinylcaprolactame), 및 polyvinyl methyl ether로 이루어진 군으로부터 선택되고,상기 공단량체는, 알릴아민(AA), 디메틸아미노에틸메타아크릴레이트 (DMAEMA), 디메틸아미노에틸아크릴레이트 (DMAEA), 아크릴산 (AAc), 폴리에틸렌 글리콜(PEG) 및 메타아크릴산 (MAAc)으로 이루어진 군으로부터 선택되는,바이오 칩의 수화젤 기능층 제조 방법.
- 제1항의 바이오 칩을 제조하는 방법에 있어서,나노 파티클 형태의 수화젤을 합성하는 단계;상기 트랜스듀서의 표면을 양 전하, 음 전하, 에폭시(epoxy) 또는 머캅토(mecapto) 중 적어도 하나로 활성화시키는 단계; 및상기 트랜스듀서의 표면에 상기 수화젤을 도포하여, 상기 수화젤 기능층을 형성하는 단계를 포함하는,바이오 칩 제조 방법.
- 제16항에 있어서,상기 수화젤을 합성하는 단계는,메인단량체 55 내지 98%, 공단량체 2 내지 40%, 및 가교제 0.1 내지 5%를 포함하여 단량체의 합이 100%가 되도록 혼합하는 단계;상기 단량체를 포함하는 수용액을 가열하는 단계;개시제를 추가하여 반응을 개시(initiate)하는 단계; 및상기 반응에 따라 생성된 수화젤 수용액을 얻는 단계를 포함하는,바이오 칩 제조 방법.
- 제17항에 있어서,상기 메인단량체는, N-이소프로필 아크릴아미드, poly(N-acryloylglycinamide), hydroxypropylcellulose, poly(vinylcaprolactame), 및 polyvinyl methyl ether로 이루어진 군으로부터 선택되고,상기 공단량체는, 알릴아민(AA), 디메틸아미노에틸메타아크릴레이트 (DMAEMA), 디메틸아미노에틸아크릴레이트 (DMAEA), 아크릴산 (AAc), 폴리에틸렌 글리콜(PEG), 및 메타아크릴산 (MAAc)으로 이루어진 군으로부터 선택되는,바이오 칩 제조방법.
- 제16항에 있어서,상기 수화젤 기능층은,폴리(N-이소프로필 아크릴아미드-co-알릴아민)[poly(N-isopropyl acrylamide-co-allylamine): poly(NIPAM-co-AA)], 폴리(N-이소프로필 아크릴아미드-co-2-(디메틸아미노)에틸 메타아크릴레이트)[poly(N-isopropyl acrylamide-co-2-(dimethylamino)ethyl methacrylate): poly(NIPAM-co-DMAEMA)], 폴리(N-이소프로필 아크릴아미드-co-2-(디메틸아미노)에틸 아크릴레이트)[poly(N-isopropyl acrylamide-co-2-(dimethylamino)ethyl acrylate), poly(NIPAM-co-DMAEA)], 폴리(N-이소프로필 아크릴아미드-co-아크릴산)[poly(N-isopropyl acrylamide-co-acrylic acid): poly(NIPAM-co-AAc)], 폴리(N-이소프로필 아크릴아미드-co-폴리에틸렌 글리콜-아크릴산)[poly(N-isopropyl acrylamide-co-polyethylene glycol-acrylic acid): poly(NIPAM-co-PEG-AAc)], 폴리(N-이소프로필 아크릴아미드-co-메타아크릴산)[poly(N-isopropyl acrylamide-co-methacrylic acid): poly(NIPAM-co-MAAc)], N-이소프로필 아크릴아미드, poly(N-acryloylglycinamide), hydroxypropylcellulose, poly(vinylcaprolactame), 및 polyvinyl methyl ether로 이루어진 군으로부터 선택되는 적어도 하나를 포함하는,바이오 칩 제조방법.
- 제16항에 있어서,상기 트랜스듀서의 표면을 양 전하, 음 전하, 에폭시(epoxy) 또는 머캅토(mecapto) 중 적어도 하나로 활성화시키는 단계는,아미노실란(aminosilane), 카르복시실란(carboxyisilane), 에폭시실란(epoxysilane) 및 머캅토실란(mercaptosilane) 중 적어도 하나를 사용하여 수행되는,바이오 칩 제조방법.
- 제16항에 있어서,상기 수화젤 기능층의 표면에 리간드(ligand), 리셉터(receptor), 디옥시리보핵산(DNA), 또는 리보핵산(RNA) 중 적어도 하나를 형성시켜 상기 표면을 개질하는 단계를 더 포함하는,바이오 칩 제조방법.
- 제16항에 있어서,상기 수화젤 기능층의 표면에 리간드, 리셉터, 디옥시리보핵산(DNA), 또는 리보핵산(RNA) 중 적어도 하나를 형성시키기 위해 나노입자 또는 단백질 중 적어도 하나를 연결기로 사용하여 상기 표면을 개질하는 단계를 더 포함하는,바이오 칩 제조방법.
- 제21항 또는 제22항 중 어느 하나의 항에 있어서,상기 표면을 개질하는 단계는,EDC(1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride), DCC (dicyclohexyl carbodiimide), NaCNBH3 (sodium cyanoborohydride), Azlactone, CDI (Carbonyl diimidazole), Iodoacetyl, Hydrazide, DADPA (diaminodipropylamine), 및 NHS 에스테르 (N-hydroxysuccinimide esters)로 이루어진 군으로부터 선택되는 적어도 하나의 가교제를 사용하여, 상기 수화젤 기능층 표면에 상기 리간드, 상기 리셉터, 상기 디옥시리보핵산, 또는 상기 리보핵산 중 적어도 하나를 링크시키는,바이오 칩 제조방법.
- 제1항의 바이오 칩을 제조하는 방법에 있어서,상기 트랜스듀서의 표면을 양 전하, 음 전하, 에폭시(epoxy) 또는 머캅토(mecapto) 중 적어도 하나로 활성화시키는 단계;상기 트랜스듀서의 표면에 수화젤 수용액을 도포하는 단계; 및상기 수화젤 수용액에 개시제를 첨가하여, 벌크젤 형태의 상기 수화젤 기능층을 형성하는 단계를 포함하는,바이오 칩 제조방법.
- 제24항에 있어서,상기 수화젤 수용액은,메인단량체 55 내지 98%, 공단량체 2 내지 40%, 및 가교제 0.1 내지 5%를 포함하는,바이오 칩 제조방법.
- 제24항에 있어서,상기 수화젤 기능층은,폴리(N-이소프로필 아크릴아미드-co-알릴아민)[poly(N-isopropyl acrylamide-co-allylamine): poly(NIPAM-co-AA)], 폴리(N-이소프로필 아크릴아미드-co-2-(디메틸아미노)에틸 메타아크릴레이트)[poly(N-isopropyl acrylamide-co-2-(dimethylamino)ethyl methacrylate): poly(NIPAM-co-DMAEMA)], 폴리(N-이소프로필 아크릴아미드-co-2-(디메틸아미노)에틸 아크릴레이트)[poly(N-isopropyl acrylamide-co-2-(dimethylamino)ethyl acrylate), poly(NIPAM-co-DMAEA)], 폴리(N-이소프로필 아크릴아미드-co-아크릴산)[poly(N-isopropyl acrylamide-co-acrylic acid): poly(NIPAM-co-AAc)], 폴리(N-이소프로필 아크릴아미드-co-폴리에틸렌 글리콜-아크릴산)[poly(N-isopropyl acrylamide-co-polyethylene glycol-acrylic acid): poly(NIPAM-co-PEG-AAc)], 폴리(N-이소프로필 아크릴아미드-co-메타아크릴산)[poly(N-isopropyl acrylamide-co-methacrylic acid): poly(NIPAM-co-MAAc)], N-이소프로필 아크릴아미드, poly(N-acryloylglycinamide), hydroxypropylcellulose, poly(vinylcaprolactame), 및 polyvinyl methyl ether로 이루어진 군으로부터 선택되는 적어도 하나를 포함하는,바이오 칩 제조방법.
- 제24항에 있어서,상기 수화젤 기능층의 표면에 리간드(ligand), 리셉터(receptor), 디옥시리보핵산(DNA), 또는 리보핵산(RNA) 중 적어도 하나를 형성시켜 상기 표면을 개질하는 단계를 더 포함하는,바이오 칩 제조방법.
- 제24항에 있어서,상기 수화젤 기능층의 표면에 리간드, 리셉터, 디옥시리보핵산(DNA), 또는 리보핵산(RNA) 중 적어도 하나를 형성시키기 위해 나노입자 또는 단백질 중 적어도 하나를 연결기로 사용하여 상기 표면을 개질하는 단계를 더 포함하는,바이오 칩 제조방법.
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