CN117123188A - 一种蛋白质分子印迹薄膜的制备方法及其应用 - Google Patents
一种蛋白质分子印迹薄膜的制备方法及其应用 Download PDFInfo
- Publication number
- CN117123188A CN117123188A CN202311127229.7A CN202311127229A CN117123188A CN 117123188 A CN117123188 A CN 117123188A CN 202311127229 A CN202311127229 A CN 202311127229A CN 117123188 A CN117123188 A CN 117123188A
- Authority
- CN
- China
- Prior art keywords
- protein
- molecular imprinting
- mpc
- crp
- steps
- 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.)
- Pending
Links
- 102000004169 proteins and genes Human genes 0.000 title claims abstract description 62
- 108090000623 proteins and genes Proteins 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims description 19
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 17
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 10
- 239000010931 gold Substances 0.000 claims description 10
- 229910052737 gold Inorganic materials 0.000 claims description 10
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 claims description 10
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 9
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 8
- 239000011575 calcium Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000002094 self assembled monolayer Substances 0.000 claims description 7
- 239000013545 self-assembled monolayer Substances 0.000 claims description 7
- QKNYBSVHEMOAJP-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydron;chloride Chemical compound Cl.OCC(N)(CO)CO QKNYBSVHEMOAJP-UHFFFAOYSA-N 0.000 claims description 6
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- XSPZHITYXQXKIQ-UHFFFAOYSA-N 2-chloro-1,3,2$l^{5}-dioxaphosphole 2-oxide Chemical compound ClP1(=O)OC=CO1 XSPZHITYXQXKIQ-UHFFFAOYSA-N 0.000 claims description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 239000012043 crude product Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000012149 elution buffer Substances 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000005457 ice water Substances 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 239000011541 reaction mixture Substances 0.000 claims description 3
- 238000006722 reduction reaction Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- NVPDSZPWJFLMIC-PAMZHZACSA-N 2-amino-9-[(4s,5r)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-8-(pyren-2-ylamino)-3h-purin-6-one Chemical compound C1=2NC(N)=NC(=O)C=2N=C(NC=2C=C3C=CC4=CC=CC5=CC=C(C3=C54)C=2)N1C1C[C@H](O)[C@@H](CO)O1 NVPDSZPWJFLMIC-PAMZHZACSA-N 0.000 claims description 2
- XPXKBJYOYGSYJB-UHFFFAOYSA-N 2-chloro-1,3,2-dioxaphosphole Chemical compound ClP1OC=CO1 XPXKBJYOYGSYJB-UHFFFAOYSA-N 0.000 claims description 2
- YYPNNBPPDFTQFX-UHFFFAOYSA-N 2-thiophen-3-ylethanol Chemical compound OCCC=1C=CSC=1 YYPNNBPPDFTQFX-UHFFFAOYSA-N 0.000 claims description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000003287 bathing Methods 0.000 claims description 2
- 239000007853 buffer solution Substances 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 229910001424 calcium ion Inorganic materials 0.000 claims description 2
- 238000004440 column chromatography Methods 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 235000019441 ethanol Nutrition 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 2
- GNGACRATGGDKBX-UHFFFAOYSA-N dihydroxyacetone phosphate Chemical compound OCC(=O)COP(O)(O)=O GNGACRATGGDKBX-UHFFFAOYSA-N 0.000 claims 4
- KLAKIAVEMQMVBT-UHFFFAOYSA-N p-hydroxy-phenacyl alcohol Natural products OCC(=O)C1=CC=C(O)C=C1 KLAKIAVEMQMVBT-UHFFFAOYSA-N 0.000 claims 2
- 230000027455 binding Effects 0.000 abstract description 12
- 238000001262 western blot Methods 0.000 abstract description 11
- 239000002356 single layer Substances 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000003795 desorption Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 108010074051 C-Reactive Protein Proteins 0.000 description 33
- 102100032752 C-reactive protein Human genes 0.000 description 33
- YHHSONZFOIEMCP-UHFFFAOYSA-N 2-(trimethylazaniumyl)ethyl hydrogen phosphate Chemical compound C[N+](C)(C)CCOP(O)([O-])=O YHHSONZFOIEMCP-UHFFFAOYSA-N 0.000 description 6
- 229950004354 phosphorylcholine Drugs 0.000 description 6
- -1 (hydroxymethyl) amino Chemical group 0.000 description 5
- 238000001903 differential pulse voltammetry Methods 0.000 description 5
- 239000012620 biological material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 102000014914 Carrier Proteins Human genes 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 206010061218 Inflammation Diseases 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 108091008324 binding proteins Proteins 0.000 description 2
- 238000002484 cyclic voltammetry Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000002848 electrochemical method Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 230000004054 inflammatory process Effects 0.000 description 2
- YHHSONZFOIEMCP-UHFFFAOYSA-O phosphocholine Chemical compound C[N+](C)(C)CCOP(O)(O)=O YHHSONZFOIEMCP-UHFFFAOYSA-O 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- KMXPHBJUGYLXDM-LSDHHAIUSA-N 1-[(7r,8s)-7-hydroxy-6,6-dimethyl-7,8-dihydropyrano[2,3-f][2,1,3]benzoxadiazol-8-yl]piperidin-2-one Chemical compound N1([C@H]2C3=CC4=NON=C4C=C3OC([C@@H]2O)(C)C)CCCCC1=O KMXPHBJUGYLXDM-LSDHHAIUSA-N 0.000 description 1
- VXUOFDJKYGDUJI-OAQYLSRUSA-N 1-myristoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCC(=O)OC[C@@H](O)COP([O-])(=O)OCC[N+](C)(C)C VXUOFDJKYGDUJI-OAQYLSRUSA-N 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- 101000942118 Homo sapiens C-reactive protein Proteins 0.000 description 1
- 101000922020 Homo sapiens Cysteine and glycine-rich protein 1 Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010057249 Phagocytosis Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 206010000891 acute myocardial infarction Diseases 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000023555 blood coagulation Effects 0.000 description 1
- 229910052956 cinnabar Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 229940125904 compound 1 Drugs 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003818 flash chromatography Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 102000051143 human CRP Human genes 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011898 label-free detection Methods 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000344 molecularly imprinted polymer Polymers 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000014207 opsonization Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008782 phagocytosis Effects 0.000 description 1
- 229920001184 polypeptide Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 230000009870 specific binding Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 208000037816 tissue injury Diseases 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/405—Concentrating samples by adsorption or absorption
-
- 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
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54373—Apparatus specially adapted for solid-phase testing involving physiochemical end-point determination, e.g. wave-guides, FETS, gratings
- G01N33/5438—Electrodes
-
- 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
- G01N33/6893—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids related to diseases not provided for elsewhere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4856—Proteins, DNA
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
- G01N2333/46—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans from vertebrates
- G01N2333/47—Assays involving proteins of known structure or function as defined in the subgroups
- G01N2333/4701—Details
- G01N2333/4737—C-reactive protein
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/70—Mechanisms involved in disease identification
- G01N2800/7095—Inflammation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biomedical Technology (AREA)
- Urology & Nephrology (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Microbiology (AREA)
- Cell Biology (AREA)
- Biotechnology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Peptides Or Proteins (AREA)
Abstract
本发明属于新型蛋白质分子印迹薄膜技术领域,特别涉及一种蛋白质分子印迹薄膜的制备方法该制备方法包括以下步骤:S1:基材预处理;S2制备组装液;S3:蛋白质分子印迹薄膜组装。本发明通过MPC分子并用于CRP蛋白质分子印迹薄膜的制备中,制备的蛋白质印迹分子不仅仅能够降低空间因素对蛋白质分子运动的阻碍作用,使得蛋白分子在材料表面吸附与解吸过程更加便利,以提高蛋白分子的传输效率。且本发明利用MPC分子印迹在单层膜和薄层表面,对于CRP蛋白质具有较强的结合能力和选择性,使得其在生物传感器更加灵敏与稳定。
Description
技术领域
本发明涉及新型蛋白质分子印迹薄膜技术领域,特别涉及一种蛋白质分子印迹薄膜的制备方法及其应用。
背景技术
蛋白在细胞和生物体的生命活动过程中起着十分重要的作用。许多蛋白是疾病标志物和治疗靶标,抗体更是在生物研究和疾病诊疗方面起到非常重要的作用,但是抗体价格昂贵、结构易变,并且不能循环利用。现在迫切需要价格低廉、性能稳定和可重复利用,且能承受复杂条件的生物材料。分子印迹是制备对某一特定分子具有空间结构选择性识别能力的聚合物的技术。功能单体和模板分子在交联剂作用下形成分子印迹聚合物,除去模板分子,留下与模板分子形状、尺寸和功能基团互补的孔穴,该聚合物具有识别和结合目标分子能力。蛋白分子印迹制备人工抗体,显示优异的化学、力学和热稳定性,能够代替昂贵的生物抗体,用于蛋白分离和提取以及生物传感,是一种非常具有前景的既经济、稳定,又可循环利用的人工生物材料。
C-反应蛋白(CRP)产生于肝脏,可以引发对侵入细胞的免疫调理作用和吞噬作用。由于发生炎症时,血清中CRP浓度急剧升高,CRP已经作为健康的一个一般标记物。在正常人血液中其含量极低,通常低于1μg/mL,在急性心肌梗死、组织损伤、炎症、感染或肿瘤破坏时浓度迅速升高,达到100μg/mL甚至更高,它作为心血管疾病的指示剂引起了广泛的研究兴趣。当前检测人类CRP的方法主要是结合共价连接到珠的单克隆抗体,并分析抗原抗体结合所引起的凝血浊度。由于抗体价格昂贵,因此,制备CRP印迹材料显得非常重要。
5-(1,2-二硫烷基-3-基)-N-(1-羟基-11-氧代-3,6,9-三氧代-12-氮杂十八烷-18-基)戊酰胺(DHAP),该分子是含有一个低聚乙二醇(OEG)端基和两个酰胺基的二硫化物分子,OEG末端部分能够抵抗非特异性蛋白质结合,并且链中引入的酰胺基团不仅可以在蛋白质结合位点上发挥作用,而且可以加强相邻DHAP分子之间的相互作用,以形成印迹空腔。基于DHAP分子在形成蛋白印迹膜时具有的优点,并结合CRP和磷酸胆碱较高的结合亲和性和明确的多键结构,本专利首先合成磷酸胆碱为端基的短链硫醇分子,然后与DHAP相结合作为蛋白印迹自组装单层膜的组分,在镀金基片表面构筑蛋白印迹自组装单层膜。本专利技术实现了靶向CRP的灵敏和无标记检测,为人们提供一种理想的人工生物材料,用于蛋白分子识别的生物传感器。在智能生物材料可控组装和生物传感器制备方面开辟一条新的路线。
发明内容
针对现有技术的不足之处,本发明的目的是提供一种蛋白质分子印迹薄膜的制备方法及其应用,通过该方法制备的蛋白质分子印迹薄膜通过MPC分子并用于CRP蛋白质分子印迹薄膜的制备中,制备的蛋白质印迹分子不仅仅能够降低空间因素对蛋白质分子运动的阻碍作用,使得蛋白分子在材料表面吸附与解吸过程更加便利,以提高蛋白分子的传输效率。且本发明利用MPC分子印迹在单层膜和薄层表面,对于CRP蛋白质具有较强的结合能力和选择性,使得其在生物传感器更加灵敏与稳定。
为实现上述目的,本发明提供如下技术方案:
一种蛋白质分子印迹薄膜的制备方法,其特征在于:包括如下步骤:
S1.基材预处理:将金极片在氧化铝研磨纸上进行打磨,然后用分别依次用硝酸和水混合液、水、无水乙醇进行超声波清洗,最后用纯氮气干燥,得到清洗后的金极片;
S2.制备组装液:将MPC分子、CRP蛋白、三羟甲基氨基甲烷盐酸盐、氯化钠、Ga+进行混合,冰水水浴30min,然后加入DHAP混合,CRP蛋白通过Ca+与MPC分子进行配位作用结合,制得组装液;
S3.蛋白质分子印迹薄膜组装:将S1所述清洁后的金极片浸入S2所述组装液中,在4℃黑暗的环境下进行蛋白质模板、DHAP、MPC组装10-12h,然后使用洗脱缓冲液在室温下进行洗脱0.5-1h,得到CRP印迹自组装单层膜。
优选的,所述MPC分子的制备原料为:3-噻吩乙醇、三乙胺、2-氯-1,3,2-二氧杂磷杂环戊烯、三甲胺,摩尔质量比为:8.97:30:14.9:13.2。
优选的,所述MPC分子的制备方法如下:
S201.将3-噻吩乙醇和三乙胺溶解于二氯甲烷中,并在冰浴中冷却。加入2-氯-1,3,2-二氧杂磷杂环戊烯-2-氧化物到反应溶液中。在冰浴温度下搅拌反应溶液1h,然后将其在室温下继续搅拌过夜,促使反应进行;
S202.将反应溶液进行真空浓缩,以去除溶剂,并得到残留物。用氯仿稀释残留物,并通过玻璃过滤器过滤溶液。再次进行真空浓缩,以浓缩滤液。将粗产物利用洗脱溶剂经过柱层析快速分离,得到粘性油状产物;
S203.将粘性油状物溶解于乙腈中,放入压力瓶中。将三甲胺加入反应溶液中。在60℃下搅拌反应混合物24小时。最后,通过还原反应得到固体MPC分子。
优选的,所述洗脱溶剂为乙烷与乙酸乙酯的混合溶液,质量比为:1:3。
优选的,所述氧化铝研磨纸打磨金极片步骤为:将金极片依次用1.0、0.3、0.05μm的氧化硅研磨纸进行打磨。
优选的,所述制备所用原料MPC分子、CRP蛋白质、三羟甲基氨基甲烷盐酸盐、氯化钠、Ga+、DGAP的摩尔质量比为:2:10:10:150:5:10。
优选的,所述Ca+为钙离子溶液,为氯化钙溶液、碳酸钙溶液其中的一种。
优选的,所述洗脱缓冲液为组成成分为:质量比为:1:1:15的EDTA、NaCl、Tris-HCl混合溶液。
蛋白质分子印迹薄膜在蛋白分子识别的传感器和蛋白分离、富集与检测上的应用。
与现有技术相比,本发明的有益效果是:
本发明通过MPC分子并用于CRP蛋白质分子印迹薄膜的制备中,制备的蛋白质印迹分子不仅仅能够降低空间因素对蛋白质分子运动的阻碍作用,使得蛋白分子在材料表面吸附与解吸过程更加便利,以提高蛋白分子的传输效率。且本发明利用MPC分子印迹在单层膜和薄层表面,对于CRP蛋白质具有较强的结合能力和选择性,使得其在生物传感器更加灵敏与稳定。
附图说明
图1为本发明蛋白质分子印迹薄膜制备方法流程图;
图2为本发明的MPC分子合成反应图;
图3为本发明CRP印迹单层膜电极洗脱蛋白前后以及加入模板蛋白后的CV曲线;
图4为本发明CRP印迹薄膜电极加入不同浓度的CRP后的DPV曲线;
图5为本发明CRP印迹薄膜电极分别加入不同蛋白后的DPV电流变化情况。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
蛋白质分子印迹薄膜的制备:
印迹单层膜在修饰前,金基片用1.0、0.3和0.05μm的Al2O3粉在研磨纸上打磨,然后分别用硝酸和水(V/V=1:1)混合溶液、水、无水乙醇超声。最后用纯氮气干燥。10μLMPC(2mM)、50uLCRP(100μg/mL,10mM Tris-HCl,150mM NaCl,pH 8.0)、50μL Ca2+(5mM)先混合,冰水浴中30min,然后加入10μL的DHAP(10mM)混合,CRP通过Ca2+与MPC配位作用结合,将清洁后的金电极浸入上述混合溶液中,4οC下在黑暗中进行蛋白质模板、DHAP、MPC共组装10-12小时。DHAP优先结合到金基片表面MPC结合蛋白周围的空白区域,然后使用洗脱缓冲液(10mM Tris-HCl,10mM EDTA,150mM NaCl,pH 8.0)室温下洗脱30min-1h,得到CRP印迹自组装单层膜。
MPC分子的合成:
和三乙胺(TEA,4.20mL,30.0mmol)溶于二氯甲烷(25mL)中,并在冰浴中冷却,然后加入2-氯-1,3,2-二氧杂磷杂环戊烯-2-氧化物(COP)(1.40mL,14.9mmol)。将反应溶液在冰浴温度下搅拌1h,并在室温下搅拌过夜。真空浓缩后,用氯仿稀释所得残留物,并通过玻璃过滤器过滤。滤液在真空中浓缩,粗产物通过快速柱色谱分离,用己烷/乙酸乙酯(1∶3)洗脱,得到1.03g粘性油状1(49%产率)。在压力瓶中,将溶于乙腈(10mL)中的化合物1(1.03g,4.40mmol)冷却至-20℃,并加入三甲胺(1.24mL,13.2mmol)。将反应混合物在60℃下搅拌24h,并还原得到0.35gMPC分子
对比例1
对比例1与实施例1存在以下区别,区别仅在于:对比例1中将实施例1中蛋白质分子印迹薄膜的制备原料中不添加CRP蛋白,其余组分、用量及其制备过程与实施例1相同,所制备出的印迹膜为非印迹自组装单层膜。
1.印迹单层膜检测CRP原理
利用电化学方法(以铁氰化钾作为电活性探针)实时研究蛋白印迹自组装单层膜的电化学识别和传感性能。铁氰化钾容易进入由DHAP和MPC构成的印迹孔穴,到达电极表面,产生稳定的电流信号。CRP由五个相同的未糖基化的多肽亚单元组成,这些亚单元通过非共价键连结成环状五聚体,每个亚单元拥有一个依靠Ca2+结合磷酸胆碱的位点。CRP的每个亚单元与磷酸胆碱结合常数为1.6×105M-1。所有的磷酸胆碱结合位点均在CRP五聚体表面,结合的磷酸胆碱几乎垂直于五聚体平面。基于磷酸胆碱和CRP较高的结合亲和性和明确的多键结构,当溶液中加入模板蛋白CRP后,CRP与金电极表面修饰的MPC上的磷酸胆碱结合,通过表面分子印迹方法制备的CRP分子印迹薄膜孔穴被模板蛋白占据,铁氰化钾到达电极表面受阻,穿过印迹孔穴的铁氰化钾的量减少,电流信号减弱,由电流信号和模板蛋白浓度存在的内在关系,实现特异性结合蛋白的定量检测。
2.电化学测试参数
电化学测量中的示差脉冲伏安法(DPV)、循环伏安法(CV)用CHI 660E电化学工作站测试(上海辰华),采用三电极体系:2mm金圆盘工作电极、饱和甘汞参比电极(SCE)和Pt丝对电极。从0.6V到-0.2V扫描。DPV测试参数:脉冲振幅50mV、脉冲周期0.5s、静置时间2s和灵敏度10-5A/V。测试前,电解质溶液用氮气吹5min。印迹/非印迹电极放入电解质溶液中,电解质溶液为含有2.5mM Fe(CN)6 4-/3-和0.1M KCl的10mM的PBS(pH7.4)。
3.蛋白分子印迹单层膜性能测试
摩尔比DHAP/MPC | ΔiMIP | ΔiNIP | ΔiMIP/ΔiNIP |
1:1 | 7.05 | 1.72 | 4.10 |
2:1 | 6.26 | 1.48 | 4.23 |
5:1 | 6.03 | 1.20 | 5.03 |
10:1 | 5.26 | 1.16 | 3.29 |
20:1 | 3.56 | 1.10 | 3.27 |
电化学响应定义为加入蛋白前后DPV还原峰电流的变化(Δi),本发明在制备蛋白印迹薄膜时,改变DHAP与MPC的摩尔比,开展了不同的实施例操作实验。DHAP与MPC加入量的不同,将会影响制备的蛋白印迹空穴的大小,对蛋白形状选择性具有一定的影响。当长链分子DHAP比例较小时,形成的空穴较大,对于印迹电极与非印迹电极,添加蛋白前后的电流变化Δi更明显,当DHAP比例较大时,形成的空穴较小,蛋白不容易进入空穴,因此添加蛋白前后的电流变化Δi不明显。当DHAP/MPC摩尔比等于5:1时,ΔiMIP/ΔiNIP有最大值5.03,因此制备CRP印迹薄膜时,选择DHAP/MPC等于5:1的摩尔比。
尽管本发明的实施方案已公开如上,但其并不仅仅限于说明书和实施方式中所列运用,它完全可以被适用于各种适合本发明的领域,对于熟悉本领域的技术人员而言,可容易的实现另外的修改,因此在不背离权利要求及等同范围所限定的一般概念下,本发明并不限于特定的细节。
Claims (9)
1.一种蛋白质分子印迹薄膜的制备方法,其特征在于:包括如下步骤:
S1.基材预处理:将金极片在氧化铝研磨纸上进行打磨,然后用分别依次用硝酸和水混合液、水、无水乙醇进行超声波清洗,最后用纯氮气干燥,得到清洗后的金极片;
S2.制备组装液:将MPC分子、CRP蛋白、三羟甲基氨基甲烷盐酸盐、氯化钠、Ga+进行混合,冰水水浴30min,然后加入DHAP混合,CRP蛋白通过Ca+与MPC分子进行配位作用结合,制得组装液;
S3.蛋白质分子印迹薄膜组装:将S1所述清洁后的金极片浸入S2所述组装液中,在4℃黑暗的环境下进行蛋白质模板、DHAP、MPC组装10-12h,然后使用洗脱缓冲液在室温下进行洗脱0.5-1h,得到CRP印迹自组装单层膜,即CRP蛋白质分子印迹薄膜。
2.根据权利要求1所述的一种蛋白质分子印迹薄膜的制备方法,其特征在于:所述MPC分子的制备原料为:3-噻吩乙醇、三乙胺、2-氯-1,3,2-二氧杂磷杂环戊烯、三甲胺,摩尔质量比为:8.97:30:14.9:13.2。
3.根据权利要求2所述的一种蛋白质分子印迹薄膜的制备方法,其特征在于:所述MPC分子的制备方法如下:
S201.将3-噻吩乙醇和三乙胺溶解于二氯甲烷中,并在冰浴中冷却。加入2-氯-1,3,2-二氧杂磷杂环戊烯-2-氧化物到反应溶液中。在冰浴温度下搅拌反应溶液1h,然后将其在室温下继续搅拌过夜,促使反应进行;
S202.将反应溶液进行真空浓缩,以去除溶剂,并得到残留物。用氯仿稀释残留物,并通过玻璃过滤器过滤溶液。再次进行真空浓缩,以浓缩滤液。将粗产物利用洗脱溶剂经过柱层析快速分离,得到粘性油状产物;
S203.将粘性油状物溶解于乙腈中,放入压力瓶中。将三甲胺加入反应溶液中。在60℃下搅拌反应混合物24小时。最后,通过还原反应得到固体MPC分子。
4.根据权利要求3所述的一种蛋白质分子印迹薄膜的制备方法,其特征在于:所述洗脱溶剂为乙烷与乙酸乙酯的混合溶液,质量比为:1:3。
5.根据权利要求1所述的一种蛋白质分子印迹薄膜的制备方法,其特征在于:所述氧化铝研磨纸打磨金极片步骤为:将金极片依次用1.0、0.3、0.05μm的氧化硅研磨纸进行打磨。
6.根据权利要求1所述的一种蛋白质分子印迹薄膜的制备方法,其特征在于:所述制备所用原料MPC分子、CRP蛋白质、三羟甲基氨基甲烷盐酸盐、氯化钠、Ga+、DGAP的摩尔质量比为:2:10:10:150:5:10。
7.根据权利要求1所述的一种蛋白质分子印迹薄膜的制备方法,其特征在于:所述洗脱缓冲液为组成成分为:质量比为:1:1:15的EDTA、NaCl、Tris-HCl混合溶液。
8.根据权利要求1、6所述的一种蛋白质分子印迹薄膜的制备方法,其特征在于:所述Ca+为钙离子溶液,为氯化钙溶液、碳酸钙溶液其中的一种。
9.根据权利要求1~7任意意向所述蛋白质分子印迹薄膜在蛋白分子识别的传感器和蛋白分离、富集与检测上的应用。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202311127229.7A CN117123188A (zh) | 2023-09-04 | 2023-09-04 | 一种蛋白质分子印迹薄膜的制备方法及其应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202311127229.7A CN117123188A (zh) | 2023-09-04 | 2023-09-04 | 一种蛋白质分子印迹薄膜的制备方法及其应用 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN117123188A true CN117123188A (zh) | 2023-11-28 |
Family
ID=88852565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202311127229.7A Pending CN117123188A (zh) | 2023-09-04 | 2023-09-04 | 一种蛋白质分子印迹薄膜的制备方法及其应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN117123188A (zh) |
-
2023
- 2023-09-04 CN CN202311127229.7A patent/CN117123188A/zh active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Herzog et al. | Electrochemical strategies for the label-free detection of amino acids, peptides and proteins | |
CN110220961B (zh) | 一种基于多肽复合膜修饰电极的l-精氨酸检测方法及传感器 | |
CN110220960B (zh) | 一种l-精氨酸的检测方法及传感器 | |
JP2002524021A (ja) | 分子相互作用の検出および薬剤発見のための電気化学的プローブ | |
CN110426435B (zh) | 一种基于肽适体的精氨酸生物传感器及其制备方法 | |
CN101419186B (zh) | 一种具有白藜芦醇分子印迹的自组装电极及其制备方法 | |
CN110702759B (zh) | 一种检测甲胎蛋白的zif-8复合材料电化学免疫传感器及其制备方法和应用 | |
CN117123188A (zh) | 一种蛋白质分子印迹薄膜的制备方法及其应用 | |
Mizutani | Biosensors utilizing monolayers on electrode surfaces | |
Wang et al. | Electrochemical immunoassay for breast cancer markers CA153 determination based on carbon nanotubes modified electrode | |
Liu et al. | Enantioselective discrimination of L-/D-phenylalanine by bovine serum albumin and gold nanoparticles modified glassy carbon electrode | |
Bi et al. | Complexation of copper ions with histidine-containing tripeptides immobilized on solid surfaces | |
CN103207231B (zh) | 基于电化学沉积与分子印迹的bpa电化学传感器及其制备方法 | |
CN210376224U (zh) | 一种检测l-精氨酸的传感器 | |
CN112763553B (zh) | 一种基于分子印迹技术对蛋白质的电化学检测方法 | |
CN210376225U (zh) | 一种基于多肽复合膜修饰电极的l-精氨酸检测传感器 | |
CN110687174B (zh) | 基于金-硒金属分子界面构建高保真的电化学生物检测平台 | |
Shin et al. | A superior anti-fouling electrode sensing layer based on a tannic acid–polyethyleneimine–graphene oxide nanocomposite for thrombin detection in complex biological fluids | |
CN109142515B (zh) | 一种用于检测痕量磷酸蛋白的石英晶体微天平传感器及其应用 | |
CN108043365B (zh) | 一种基于仿生小肽配基的亲和富集整体材料及制备与应用 | |
CN109959791B (zh) | 一种用于特异性识别肿瘤细胞的多重作用印迹材料及其制备和应用 | |
Fu et al. | Electrochemical immunoanalysis for carcinoembryonic antigen based on multilayer architectures of gold nanoparticles and polycation biomimetic interface on glassy carbon electrode | |
CN116953043A (zh) | 一种基于多肽复合膜修饰电极的l-谷氨酸检测方法及传感器 | |
Ijeri et al. | Capacitive Sensing of Amino Acids Using Caliraxene‐Coated Silicon Transducers | |
CN104152455B (zh) | 克伦巴胺适配体与检测克伦巴胺的适配体电化学生物传感器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |