EP1434997A1 - Fixed support for immobilizing biomolecules - Google Patents
Fixed support for immobilizing biomoleculesInfo
- Publication number
- EP1434997A1 EP1434997A1 EP02799374A EP02799374A EP1434997A1 EP 1434997 A1 EP1434997 A1 EP 1434997A1 EP 02799374 A EP02799374 A EP 02799374A EP 02799374 A EP02799374 A EP 02799374A EP 1434997 A1 EP1434997 A1 EP 1434997A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polymer
- biomolecules
- solid support
- hybridization
- functionality
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000003100 immobilizing effect Effects 0.000 title claims abstract description 14
- 229920000642 polymer Polymers 0.000 claims abstract description 46
- 239000007787 solid Substances 0.000 claims description 39
- 229920001568 phenolic resin Polymers 0.000 claims description 20
- 239000005011 phenolic resin Substances 0.000 claims description 20
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical group C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 10
- 108091034117 Oligonucleotide Proteins 0.000 claims description 8
- JLCPHMBAVCMARE-UHFFFAOYSA-N [3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methyl [5-(6-aminopurin-9-yl)-2-(hydroxymethyl)oxolan-3-yl] hydrogen phosphate Polymers Cc1cn(C2CC(OP(O)(=O)OCC3OC(CC3OP(O)(=O)OCC3OC(CC3O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c3nc(N)[nH]c4=O)C(COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3CO)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cc(C)c(=O)[nH]c3=O)n3cc(C)c(=O)[nH]c3=O)n3ccc(N)nc3=O)n3cc(C)c(=O)[nH]c3=O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)O2)c(=O)[nH]c1=O JLCPHMBAVCMARE-UHFFFAOYSA-N 0.000 claims description 7
- 238000002493 microarray Methods 0.000 claims description 7
- 229920003986 novolac Polymers 0.000 claims description 7
- 102000004169 proteins and genes Human genes 0.000 claims description 5
- 108090000623 proteins and genes Proteins 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000427 antigen Substances 0.000 claims description 3
- 102000036639 antigens Human genes 0.000 claims description 3
- 108091007433 antigens Proteins 0.000 claims description 3
- 102000004196 processed proteins & peptides Human genes 0.000 claims description 2
- 108090000765 processed proteins & peptides Proteins 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 239000003822 epoxy resin Substances 0.000 abstract description 5
- 229920000647 polyepoxide Polymers 0.000 abstract description 5
- 238000009396 hybridization Methods 0.000 description 34
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 12
- 230000000903 blocking effect Effects 0.000 description 12
- 239000004593 Epoxy Substances 0.000 description 10
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 108020004414 DNA Proteins 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 125000003700 epoxy group Chemical group 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000000020 Nitrocellulose Substances 0.000 description 3
- 229920002873 Polyethylenimine Polymers 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 3
- 229920001220 nitrocellulos Polymers 0.000 description 3
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- 102000053602 DNA Human genes 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 108020004682 Single-Stranded DNA Proteins 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000003752 polymerase chain reaction Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- WECJUPODCKXNQK-UHFFFAOYSA-N 1-methoxy-4-[(4-methoxyphenyl)methyl]benzene Chemical compound C1=CC(OC)=CC=C1CC1=CC=C(OC)C=C1 WECJUPODCKXNQK-UHFFFAOYSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 238000000018 DNA microarray Methods 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- 229920006397 acrylic thermoplastic Polymers 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012050 conventional carrier Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001212 derivatisation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006911 enzymatic reaction Methods 0.000 description 1
- 239000005007 epoxy-phenolic resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 238000001215 fluorescent labelling Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- -1 methylol groups Chemical group 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000007899 nucleic acid hybridization Methods 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 230000000269 nucleophilic effect Effects 0.000 description 1
- 239000002773 nucleotide Substances 0.000 description 1
- 125000003729 nucleotide group Chemical group 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 125000000467 secondary amino group Chemical class [H]N([*:1])[*:2] 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- G01N33/54353—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals with ligand attached to the carrier via a chemical coupling agent
-
- 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
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
Definitions
- the present application relates to a solid support for immobilizing biomolecules, which is at least partially coated with a polymer, as well as a method for producing this support and the use of an epoxy resin.
- an array for biomolecules is disclosed in US Pat. No. 6,150,103, a layer of polyethyleneimine (PEI) being applied to a glass support via a coupling agent such as tri (0-Ci-Cs-alkyl) silane on the surface of the array.
- PEI polyethyleneimine
- WO 94/00600 describes solid supports for nucleic acid hybridization assays, the solid support being coated with a polymer, such as PEI.
- primers are bound to amino-derivatized glass supports for carrying out a solid-phase PCR.
- the binding takes place via, for example, S-MBS (m-maleinimidobenzoyl-n-hydroxysulfo-subtinimide ester).
- US 5,962,136 describes a solid support on which a polymer is applied, this polymer including is made of polyacrylic, polyester, polyurethane, silicone, cellulose, epoxy, olefin, fluorine, etc. Proteins or fragments thereof are immobilized on this polymer layer.
- epoxy polymers are applied to a carrier which have been produced, for example, from the following monomers: acrylics, acrylamide derivatives, vinyls, nylon, polyurethanes and polyethers and copolymers thereof. These are copolymers. preferably hydrophilic. The functionality is at least 1.
- the object of the present invention is to provide a To provide layering for a solid support for the immobilization of biomolecules, which has low or negligibly small intrinsic fluorescence, a high immobilization capacity and a large signal-to-noise ratio after the hybridization. Furthermore, the material for the coating should be easy and inexpensive to produce, easy to apply to the solid support and suitable for a number of different biomolecules, both at the DNA and protein levels.
- the object of the present invention is achieved by the solid support described at the outset, which is characterized in that the polymer is a phenolic resin with a functionality of 6 to 15, preferably 7 to 10, particularly preferably 8. It has surprisingly been found that such a phenolic resin is excellently suitable as a coating for a solid support for the immobilization of biomolecules, has a low autofluorescence, a high immobilization capacity and a very large signal-to-noise ratio. Phenolic resins with such functionality are already known, but they have hitherto been used in the field of semiconductors and also as an additive to solids, plastics, adhesives and other materials which have to withstand high temperatures.
- a phenolic resin with such a functionality is optimally suitable for immobilizing biomolecules both at the DNA and at the protein level.
- the term "functionality" is used in the art to describe the reactivity of the molecules making up the polymer.
- the functionality relates, for example, to the number of epoxy groups per molecule.
- the high functionality of the polymer is extremely favorable because it increases the binding capacity of the polymer.
- the functionality of the polymer according to the invention is not too high that it would have an adverse effect. If the functionality is too high, there is a risk, for example, that the reactive groups react with one another and thus adversely affect the structure of the polymer.
- the above functionalities are optimal for the Coating of a solid support for the immobilization of biomolecules, in particular for subsequent analysis processes at high temperatures, for which such phenolic resins are particularly suitable, in particular since no additional ther ochemical or photoreactive groups are necessary to bind the polymer to the support surface.
- the phenolic resin also has high storage stability, improved tear properties and extremely high temperature and shape stability.
- the phenolic resin can also be provided with additives in order to improve or change certain properties.
- solid support is understood to mean all solid supports of any shape, size and of any suitable material known to the person skilled in the art.
- microtiter plates, microarrays, filters, columns, membranes, etc. come into question.
- phenolic resins are extremely suitable as a polymer for coating solid substrates for immobilizing biomolecules. Phenolic resins also have a low tendency to creep and a low coefficient of thermal expansion. Solid supports with epoxy-phenolic resins with a functionality defined above have surprisingly been found to be optimal in terms of the inherent fluorescence and the signal-to-noise ratio after hybridization.
- Novolaks are phenolic resins, the aromatic rings of which are linked via methylene bridges. After hardening agents, such as formaldehyde, have been added, they can be hardened at elevated temperature with crosslinking. Novolaks are acid-catalyzed polycondensation products made from formaldehyde and phenols and do not contain any methylol groups. Novolak coatings with the functionality defined above have surprisingly been found to be extremely favorable in terms of immobilization capacity.
- the polymer is preferably composed of bisphenol A groups.
- Bisphenol A is a 2,2-bis (4-hydroxyphenyl) propane (C15H16O2) with a melting temperature of 155-156 ° C.
- C15H16O2 2,2-bis (4-hydroxyphenyl) propane
- These are polymers Particularly stable in temperature and shape, which is advantageous, for example, for use in on-chip PCRs, since repeated heating and cooling has to be carried out. Furthermore, these polymers have a high chemical resistance, flow stability and short pressing cycles.
- a polymer composed of bisphenol A groups with an epoxy functionality of 6 to 15 has all the necessary properties of a coating for solid supports for the immobilization of biomolecules:
- the immobilization capacity after blocking the reactive groups is extremely high, for example it is at least 60%.
- Epon Resin SU-8 from Shell (corresponds to Epikote 157 from Resolution).
- Epikote 157 is a polymeric solid phenolic resin with an average epoxy group functionality average of 8 and is based on bisphenol A.
- the viscosity at 130 ° C is 1 to 6 Pa.st.
- the epoxy molar weight is 195 to 230 g / eq and the epoxy group content is 4348 to 5128 mmol / kg.
- the melting point is around 82 ° C, the density at 1.2 kg / L. This substance has proven to be optimal as a coating for a solid support for immobilizing biomolecules.
- SU-8 has a decomposition temperature of about 380 ° C.
- SU-8 is particularly biocompatible and, in the event that it is cross-linked, it is difficult to bring it back into the liquid state and is insoluble in most chemicals. It has been shown that SU-8 is particularly stable in temperature and shape and is therefore ideal as a coating material.
- the carrier is preferably a microtiter plate.
- the coating is provided in each well, so that certain biomolecules can be immobilized per well.
- the carrier is a microarray.
- This microarray can have any shape or size; it can be provided, for example, in the form of a glass plate or a well.
- the biomolecules are in a high Density is immobilized, so that such microarrays are highly suitable for detection and analysis processes.
- Such microarrays are well known in the art and, depending on the biomolecule and the amount of samples to be detected, the person skilled in the art can select the microarray that is optimal for him.
- the polymer is preferably coated in spots on the carrier. These spots are localized areas with a given diameter. This provides a solid support that can only immobilize biomolecules in the spots, so that an accurate and reproducible result is obtained in analysis methods with multiple samples. Furthermore, the necessary sample quantities are limited.
- An advantageous carrier is further characterized in that biomolecules are immobilized on the polymer.
- biomolecules are immobilized on the polymer.
- a carrier with immobilized biomolecules is already made available, as a result of which additional preparatory steps for preparing the carrier are not necessary and thereby simplify an analysis method to be carried out.
- the biomolecules can be immobilized directly on the polymer surfaces or via crosslinkers known per se.
- biomolecules can be immobilized on the polymer surface via an additional derivatization.
- the biomolecules are preferably immobilized in spots on the polymer.
- spots are understood to mean localized areas with a certain diameter, with the same or identical biomolecules being advantageously immobilized per spot. In this way, a number of different biomolecules can be analyzed or detected simultaneously on a solid support, which can also be coated with polymer over its entire surface.
- the biomolecules are particularly preferably selected from the group consisting of oligonucleotides, proteins, peptides, antigens and antibodies.
- Oligonucleotides are understood to mean both DNA and RNA molecules of any size, in particular a size between 5 and 70 nucleotides, with or without artificial modifications.
- the biomolecules react with the epoxy groups, immobilizing them on the polymer.
- Such solid supports can thus be used, for example, for solid-phase PCRs, hybridization reactions, the detection of antigens or antibodies, enzymatic reactions, etc.
- Another aspect of the present invention relates to the use of a phenolic resin with a functionality of 6 to 15, preferably 7 to 10, particularly preferably 8, as a coating on a solid support for immobilizing biomolecules.
- a phenolic resin with such functionality has not previously been used as a coating agent for a solid support for immobilizing biomolecules.
- a phenolic resin with a functionality of 6 to 15 is particularly well suited for this and delivers optimal results, in particular with regard to the binding capacity, the signal-to-noise ratio and the autofluorescence.
- the phenolic resin can be made available in solid form, for example dissolved in methyl ethyl ketone, or as a finished solution, for example in ⁇ -butyrolactone.
- the polymer is particularly preferably a novolak and particularly preferably a polymer which is based on bisphenol A groups.
- Another aspect of the present invention relates to a method for producing a carrier according to the invention as described above, wherein a layer of phenolic resin with a functionality of 6 to 15, preferably 7 to 10, particularly preferably 8, is applied to the carrier.
- a layer of phenolic resin with a functionality of 6 to 15, preferably 7 to 10, particularly preferably 8 is applied to the carrier.
- This can be carried out by any known method which is also known to the person skilled in the art in the field of biochemistry.
- Various supports can also be used here, such as chips, microtiter plates, biosensors, etc..
- FIG. 1 shows the reaction mechanism of the carrier according to the invention
- 2 shows the hybridization genetics on the carrier according to the invention
- 3 shows the immobilization capacity of biomolecules on commercial and inventive carriers
- 4 shows the signal-to-noise ratio of different carriers
- a comparison of a hybridization with and without Ethanolamine blocking is shown
- Figure 6 the compatibility with two different spotters is shown
- the spot diameters of different polymers are compared with one another in FIG. 7 and the optimal sample concentration is shown in FIG. 8.
- the glass slides are coated by immersion in 2% epoxy resin (functionality 8) (Shell Chemicals) / toluene solution under N2 or 2% epoxy resin / methyl ethyl ketone (hereinafter referred to as "SU-8 slides").
- epoxy resin functionality 8
- SU-8 slides 2% epoxy resin / methyl ethyl ketone
- SU-8 slides contain epoxy functions that are linked to nucleophilic groups, e.g. Amino groups react with ring opening to secondary amines.
- the reaction mechanism is shown in Fig.l.
- the SU-8 slides are placed on a damp paper towel in a plastic petri dish, sealed with parafilm and placed in the drying cabinet at 50 ° C. overnight.
- the spots swell in the wet atmosphere, can react with the reactive surface and be covalently bound to the surface.
- the slides can lie down for a few days before the blocking and hybridization is started.
- the slides are shaken with a solution of 50 mM ethanolamine, 0.1 M ris, pH 9 and 0.1% SDS for 15 min at 50 ° C, and again twice in H 2 0 washed, and finally blown dry with compressed air. It is beneficial to use at least 10 ml of solution per slide and the slides when changing the washing solution do not dry.
- the sample labeled with Cy5 or Cy3 is placed in 20mM Tris, pH 7.4; 0.9 M NaCl, 0.01% SDS and formamide were taken up, denatured at 95 ° C. (5 min) and then immediately placed on ice. 20 ⁇ l are dropped onto the array on the slide, covered with a 1.5 x 1.5 cm cover plate and hybridized at 50 ° C.
- the hybridization times were varied from 1 to 7 hours. 2 shows the fluorescence (fl) of the hybridization signal as a function of time. A hybridization time of 2 hours is sufficient for a clear hybridization result. The fluorescence intensities after 2 and 4 hours of hybridization are within the standard deviation.
- the hybridization efficiency was the same for 0.35 and 1 nl spots.
- the fluorescence intensities did not change.
- FIG. 4 shows a comparison of the signal-to-noise ratio (HG, background) in%, amino-silanized (a), nitrocellulose (N), aldehyde (A) being known Epoxy slides (E) and SU-8 slides were compared.
- the SU-8 slides showed a very good signal-to-noise ratio compared to the known slides.
- the fluorescence background was calculated as a percentage of the hybridization signal, the mean fluorescence background measured on 15 hybridized samples on SU8 9.3%, on 3D-Link TM 29.9% and on EasySpot (hydrophilic epoxy polymer) 30.1 % scam.
- Hybridization was measured after blocking the supports with 0, 20 and 50 mM ethanolamine, and it can be seen from FIG. 5 that hybridization without ethanolamine blocking gave a similar fluorescence background compared to hybridization with ethanolamine blocking.
- the result of this is that the method with SU8 can also be carried out without a blocking step, which considerably simplifies and shortens the method compared to conventional carriers in which the blocking step is essential.
- the average spot diameter of biomolecular probes was measured on different, reactive chip surfaces.
- the concentration of an amino-modified oligonucleotide (18 to 50mer) spotted on a SU8 support was varied between 0.02 ⁇ m and 100 ⁇ m, and the hybridization signals were measured. No difference in hybridization fluorescence could be detected at the higher concentrations (above 20 ⁇ M). The lowest sample concentration that resulted in a significant hybridization signal was 2uM. 8a shows the hybridization fluorescence of 20, 2, 0.2 and 0.02 ⁇ M-spotted oligonucleotides.
- single-stranded DNA (1500 base pairs) was spotted on an SU8 support, a detectable signal being seen even at 50ng / ⁇ l single-stranded DNA.
- 8b shows the result of the fluorescence scan, 10, 50, 100, 150 and 200ng / ⁇ l single-strand DNA with 2ng / ⁇ l fluorescent labeling being spotted on the support.
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- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Urology & Nephrology (AREA)
- Food Science & Technology (AREA)
- General Physics & Mathematics (AREA)
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- Biotechnology (AREA)
- Medicinal Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
Abstract
Description
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Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT15082001 | 2001-09-24 | ||
| AT0150801A AT500669B1 (en) | 2001-09-24 | 2001-09-24 | SOLID CARRIER FOR THE IMMOBILIZATION OF BIOMOLECULES |
| PCT/AT2002/000277 WO2003027675A1 (en) | 2001-09-24 | 2002-09-24 | Fixed support for immobilizing biomolecules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1434997A1 true EP1434997A1 (en) | 2004-07-07 |
Family
ID=3688296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02799374A Withdrawn EP1434997A1 (en) | 2001-09-24 | 2002-09-24 | Fixed support for immobilizing biomolecules |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7790472B2 (en) |
| EP (1) | EP1434997A1 (en) |
| AT (1) | AT500669B1 (en) |
| CA (1) | CA2460981C (en) |
| WO (1) | WO2003027675A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0614727D0 (en) * | 2006-07-25 | 2006-09-06 | Chromatide Ltd | Solid support |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2438436B2 (en) * | 1974-08-09 | 1979-11-29 | Boehringer Mannheim Gmbh, 6800 Mannheim | Shaped article with an enzymatically active surface and process for its production |
| CS204190B1 (en) * | 1978-02-22 | 1981-03-31 | Jaroslav Drobnik | Activation method for hydrxyl groups containing insoluble carriers |
| US4225410A (en) * | 1978-12-04 | 1980-09-30 | Technicon Instruments Corporation | Integrated array of electrochemical sensors |
| JPS58221166A (en) * | 1982-06-18 | 1983-12-22 | Mochida Pharmaceut Co Ltd | Carrier for immunochemical measurement and measuring reagent using this carrier |
| US4994373A (en) * | 1983-01-27 | 1991-02-19 | Enzo Biochem, Inc. | Method and structures employing chemically-labelled polynucleotide probes |
| US4881109A (en) * | 1985-08-29 | 1989-11-14 | Matsushita Electric Industrial Co., Ltd. | Sensor using a field effect transistor and method of fabricating the same |
| US5238810A (en) | 1986-09-22 | 1993-08-24 | Nippon Telegraph And Telephone Corporation | Laser magnetic immunoassay method and apparatus thereof |
| US5054872A (en) * | 1990-03-16 | 1991-10-08 | Ibm Corporation | Polymeric optical waveguides and methods of forming the same |
| SE466754B (en) * | 1990-09-13 | 1992-03-30 | Berol Nobel Ab | COVALENT BINDING POLYMERS TO HYDROPHILIC SURFACES |
| AU4544193A (en) | 1992-06-25 | 1994-01-24 | Microprobe Corporation | Solid supports for nucleic acid hybridization assays |
| JPH0622798A (en) * | 1992-07-07 | 1994-02-01 | Hitachi Ltd | Method for determining base sequence |
| BE1008955A3 (en) | 1994-11-14 | 1996-10-01 | Univ Catholique Louvain | Process for obtaining and products obtained biomaterials. |
| US6228326B1 (en) * | 1996-11-29 | 2001-05-08 | The Board Of Trustees Of The Leland Stanford Junior University | Arrays of independently-addressable supported fluid bilayer membranes |
| US6150103A (en) | 1997-07-22 | 2000-11-21 | Qiagen Genomics, Inc. | Polyethylenimine-based biomolecule arrays |
| US6762019B2 (en) * | 1997-09-30 | 2004-07-13 | Surmodics, Inc. | Epoxide polymer surfaces |
| US6576478B1 (en) * | 1998-07-14 | 2003-06-10 | Zyomyx, Inc. | Microdevices for high-throughput screening of biomolecules |
| EP1230544B1 (en) * | 1999-06-18 | 2004-07-28 | Gamera Bioscience Corporation | Devices and methods for the performance of miniaturized homogeneous assays |
| EP1134294A3 (en) * | 2000-03-16 | 2004-06-30 | Kabushiki Kaisha Toshiba | Method for producing immobilized nucleic acid strand |
| US20020115224A1 (en) * | 2001-02-16 | 2002-08-22 | Ulrich Rudel | Method for the preparation of optical (bio)chemical sensor devices |
-
2001
- 2001-09-24 AT AT0150801A patent/AT500669B1/en not_active IP Right Cessation
-
2002
- 2002-09-24 CA CA2460981A patent/CA2460981C/en not_active Expired - Fee Related
- 2002-09-24 WO PCT/AT2002/000277 patent/WO2003027675A1/en not_active Ceased
- 2002-09-24 US US10/490,543 patent/US7790472B2/en not_active Expired - Fee Related
- 2002-09-24 EP EP02799374A patent/EP1434997A1/en not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03027675A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AT500669A1 (en) | 2006-02-15 |
| CA2460981A1 (en) | 2003-04-03 |
| US20040259272A1 (en) | 2004-12-23 |
| US7790472B2 (en) | 2010-09-07 |
| CA2460981C (en) | 2011-04-05 |
| AT500669B1 (en) | 2007-02-15 |
| WO2003027675A1 (en) | 2003-04-03 |
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