CN106872425A - A kind of modularization biological sample analysis chip - Google Patents

A kind of modularization biological sample analysis chip Download PDF

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Publication number
CN106872425A
CN106872425A CN201710023509.1A CN201710023509A CN106872425A CN 106872425 A CN106872425 A CN 106872425A CN 201710023509 A CN201710023509 A CN 201710023509A CN 106872425 A CN106872425 A CN 106872425A
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chip
analysis chip
biological sample
molecule
analysis
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CN106872425B (en
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任晓丽
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Shenzhen handed down Biological Medicine Co., Ltd.
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Guizhou Root Medical Instrument Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64Fluorescence; Phosphorescence
    • G01N21/6486Measuring fluorescence of biological material, e.g. DNA, RNA, cells

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  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)

Abstract

The invention discloses a kind of modularization biological sample analysis chip, belong to technical field of biological.Modularization biological sample analysis chip of the invention is used to support, fixes and integrated analysis module comprising baseplate material, analysis module is integrated with substrate, the biomolecule such as albumen, nucleic acid, polypeptide or organic molecule can be coated with analysis module surface as capture molecule;Analysis chip surface further comprises at least a kind of closing component, non-specific adsorption for avoiding albumen or other biological and organic molecule, hydrophilic substrates can be that baseplate material is hydrophilic in itself or hydrophobic material is modified hydrophilic or is changed into hydrophilic nmature by reagent or sealer treatment, and two processes of hydrophilic nmature and closing can reduce non-specific binding and interference.Modularization biological sample analysis chip of the invention solves the problems, such as that current biological sample analysis chip is high to point sample machine requirement, point sample precision is not high and reaction system is not independent enough.

Description

A kind of modularization biological sample analysis chip
Technical field
The invention belongs to technical field of biological, more particularly to a kind of modularization biological sample analysis chip.
Background technology
Into 21 century, biochip technology has welcome the development of high speed, automatic printing or light guiding chemical synthesising technology On the materials such as silicon chip, glass, gel or nylon membrane manufacture micro-array biomolecule chip, realize to compound, protein, The detection of nucleic acid, cell or other biological components wide coverage.
Be mainly and be coupled for albumen equimolecular or is coated on substrate and is detected by the technology of preparing of current biochip, Patent 200710134477.9 discloses a kind of coated chip of covalent coupling, and patent US20040009528A1 discloses one kind The chip of the covalently coating with sulfydryl, and these methods are all direct coateds on the substrate of chip, and it is anti-in detection process Molecule to be coupled typically all is configured to solution by the package amount of body by a model machine, and point sample is coated with chip, patent 01105795.5 discloses a kind of method that utilization high speed spotting methods prepare biochip, but utilizes the method for point sample to machine The requirement of device is high, even if best machine also can be faulty or be loaded situation about failing, and such case is difficult detection, It is simultaneously an independent coupling reaction system between each drop and substrate, patent 200510013108.5 discloses utilization Photoetching technique is processed to substrate, and retain effective response area has carried out certain improvement to technology, but still solves The not problem of point sample precision and reaction system independence, each point of sample is a coating system in theory, this is from principle Application potential of the biochip in quantitative determination is limited, this is also the current main application pain spot of biochip.
The content of the invention
The embodiment of the present invention provides a kind of modularization biological sample analysis chip.The present invention changes traditional point sample thinking, Invented a kind of modularization high accuracy analysis chip, it is intended to solve current biological sample analysis chip it is high to point sample machine requirement, Point sample precision is not high and not independent enough the problem of reaction system.
The embodiment of the present invention is achieved in that a kind of modularization biological sample analysis chip, including water-wetted surface base Plate material, analysis module;The baseplate material of described water-wetted surface is used to support, fixes and integrated analysis module;The analysis Module assembled is on baseplate material;Capture molecule is coated with described analysis module surface;The analysis module surface and group Baseplate material surface after dress analysis module comprises at least a kind of closing component, it is described close component for avoid albumen or other The non-specific adsorption of biological and organic molecule;Described analysis module is to be assembled on baseplate material after the completion of being coated with.
Hydrophilic substrates in the present invention can be for baseplate material is hydrophilic in itself or hydrophobic material is modified hydrophilic or passes through Reagent or sealer treatment are changed into hydrophilic nmature, and two processes of hydrophilic nmature and closing can reduce non-specific binding and do Disturb.
Described baseplate material is in the baseplate material of metal material, glass material, silicon materials or high molecule plastic material One kind.
The water-wetted surface is that baseplate material is hydrophilic in itself, hydrophobic material is modified hydrophilic or is changed into by sealer treatment The water-wetted surface of hydrophilic nmature.
Described capture molecule is used to capture the material to be analyzed in biological sample, and the capture molecule is from albumen, sugar Albumen, polypeptide, nucleic acid, organic molecule, polysaccharide or antibody class biomolecule.
Described analysis module has carboxyl, amino, chloromethyl, epoxy alkyl, biotin, aldehyde radical or mercapto selected from surface The material for possessing conjugated biological molecules ability of base modification;Possesses the metal material of conjugated biological molecules ability;And surface tool For the one kind in the polystyrene of Biomolecular adsorption ability, nylon or cellulose acetate material.
Described closing molecule is bovine serum albumin(BSA), tween, skimmed milk power, casein, amino acid or xylitol tool There are the biology or organic molecule of hydrophobic binding characteristic.
Described modularization biological sample analysis chip is further used as module assembled and constitutes new on bigger substrate Chip.
Described modularization biological sample analysis chip, also including the reference module for internal reference, reference module is directly marked Note has the analog of determinand or determinand, for carrying out reference to chip and to detection signal.
A kind of biological sample analysis method of the above-mentioned modularization biological sample analysis chip of application, comprises the following steps:
(1) capture molecule is coated in the materials A for possessing adsorption capacity or covalent coupling ability or cuts into material Small module is coated with;
(2) it is assembled in after being cut by the materials A of well cutting or by materials A on baseplate material B, or materials A is assembled Cut on substrate B, formed analysis chip C, analysis chip C can further be cut the multiple chips of generation or be analyzed by multiple Chip C is further assembled in the new analysis chip formed on substrate;
(3) analysis chip C is closed with the reagent containing closing component;
(4) analysis chip C is contacted in molecules detected thing;
(5) cleaning analysis chip C;
(6) analysis chip C with containing being contacted with markd molecular agents;
(7) filled with signal acquisition by light source activation if the mark molecule of step (6) is for fluorescence molecule or quantum dot Put and detected;If the mark molecule of step (6) be enzyme or direct light emitting molecule, analysis chip further with reaction reagent Contact is formed luminous signal and is detected using signal pickup assembly.
Described signal pickup assembly can be selected from CCD (charge coupled device), PMT (photomultiplier), PD (photoelectric tube), It is preferred that CCD.
A kind of kit, including
(1) above-mentioned modularization biological sample analysis chip;
(2) cleaning reagent;
(3) there is the reagent of binding ability component containing markd and checking matter.
(4) if the mark in (3) is or direct light emitting molecule, kit further includes a kind of luminescence-producing reaction Reagent.
The present invention has the following advantages that compared with prior art:
The present invention changes traditional point sample thinking, has invented a kind of modularization high accuracy analysis chip, it is intended to solve current Biological sample analysis chip is high to the requirement of point sample machine, the problem that point sample precision is not high and reaction system is not independent enough.The present invention Modularization biological sample analysis chip be used to supporting comprising baseplate material, fixed and integrated analysis module, be integrated with substrate Analysis module, can be coated with the biomolecule such as albumen, nucleic acid, polypeptide or organic molecule as capture point on analysis module surface Son;Analysis chip surface further comprises at least a kind of closing component, for avoiding albumen or other biological and organic molecule Non-specific adsorption, hydrophilic substrates can for baseplate material is hydrophilic in itself or hydrophobic material is modified hydrophilic or by reagent or Sealer treatment is changed into hydrophilic nmature, and two processes of hydrophilic nmature and closing can reduce non-specific binding and interference.
Brief description of the drawings
Fig. 1 is coating, cutting, assembling, the closed process exemplary plot of modularization biological sample analysis chip, wherein (a) is first Coating cuts assembling again, and (b) first cuts and be coated with assembling again, and (c) is cut during assembling, and is cut after (d) assembling Assemble again.
Fig. 2 is the schematic diagram of modularization biological sample analysis chip.
Fig. 3 is the assembling schematic diagram of analysis module and baseplate material;(a) is wherein schemed for analysis module is assembled to depression On substrate;Figure (b) is flushed using cover plate covering adjustment analysis module surface with substrate surface.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Embodiment 1
The invention provides a kind of modularization biological sample analysis chip, including water-wetted surface baseplate material, analysis mould Block;The baseplate material of described water-wetted surface is used to support, fixes and integrated analysis module;The analysis module is assembled in substrate On material;Capture molecule is coated with described analysis module surface;Behind the analysis module surface and Assembly analysis module Baseplate material surface comprises at least a kind of closing component, and described closes component for avoiding albumen or other biological and organic molecule Non-specific adsorption;Described analysis module is to be assembled on baseplate material after the completion of being coated with.
Hydrophilic substrates in the present invention can be for baseplate material is hydrophilic in itself or hydrophobic material is modified hydrophilic or passes through Reagent or sealer treatment are changed into hydrophilic nmature, and two processes of hydrophilic nmature and closing can reduce non-specific binding and do Disturb.
Described baseplate material is in the baseplate material of metal material, glass material, silicon materials or high molecule plastic material One kind.
The water-wetted surface is that baseplate material is hydrophilic in itself, hydrophobic material is modified hydrophilic or is changed into by sealer treatment The water-wetted surface of hydrophilic nmature.
Described capture molecule is used to capture the material to be analyzed in biological sample, and the capture molecule is from albumen, sugar Albumen, polypeptide, nucleic acid, organic molecule, polysaccharide or antibody class biomolecule.
Described analysis module has carboxyl, amino, chloromethyl, epoxy alkyl, biotin, aldehyde radical or mercapto selected from surface The material for possessing conjugated biological molecules ability of base modification;Possesses the metal material of conjugated biological molecules ability;And surface tool For the one kind in the polystyrene of Biomolecular adsorption ability, nylon or cellulose acetate material.
Described closing molecule is bovine serum albumin(BSA), tween, skimmed milk power, casein, amino acid or xylitol tool There are the biology or organic molecule of hydrophobic binding characteristic.
Described modularization biological sample analysis chip is further used as module assembled and constitutes new on bigger substrate Chip.
Described modularization biological sample analysis chip, also including the reference module for internal reference, reference module is directly marked Note has the analog of determinand or determinand, for carrying out reference to chip and to detection signal.
A kind of biological sample analysis method of the above-mentioned modularization biological sample analysis chip of application, comprises the following steps:
(1) capture molecule is coated in the materials A for possessing adsorption capacity or covalent coupling ability or cuts into material Small module is coated with;
(2) it is assembled in after being cut by the materials A of well cutting or by materials A on baseplate material B, or materials A is assembled Cut on substrate B, formed analysis chip C, analysis chip C can further be cut the multiple chips of generation or be analyzed by multiple Chip C is further assembled in the new analysis chip formed on substrate;
(3) analysis chip C is closed with the reagent containing closing component;
(4) analysis chip C is contacted in molecules detected thing;
(5) cleaning analysis chip C;
(6) analysis chip C with containing being contacted with markd molecular agents;
(7) filled with signal acquisition by light source activation if the mark molecule of step (6) is for fluorescence molecule or quantum dot Put and detected;If the mark molecule of step (6) be enzyme or direct light emitting molecule, analysis chip further with reaction reagent Contact is formed luminous signal and is detected using signal pickup assembly.
Described signal pickup assembly can be selected from CCD (charge coupled device), PMT (photomultiplier), PD (photoelectric tube), It is preferred that CCD.
A kind of kit, including
(1) above-mentioned modularization biological sample analysis chip;
(2) cleaning reagent;
(3) there is the reagent of binding ability component containing markd and checking matter.
(4) if the mark in (3) is or direct light emitting molecule, kit further includes a kind of luminescence-producing reaction Reagent.
A kind of preparation method of modularization biological sample analysis chip, comprises the following steps that:
Capture molecule is coated in first on the material for possessing adsorption capacity or covalent coupling ability, the material can use phase Material is carried out into cutting to larger area, after coating it is assembled in form analysis chip on baseplate material, analysis chip can After multiple chip modules or multiple cuttings being produced with further cutting further on assembling and substrate (in including but not limited to Fig. 1 Assembling process shown in (d));Or cut before coating, then it is coated with, it is assembled on substrate after coating;Or bag By it after further being cut after substrate mounting;In including but not limited to Fig. 1 (a), (b), (c), the chip manufacturing mistake shown in (d) Journey.
Modularization chip of the invention as shown in Figure 2 is assembled by substrate, analysis module, and baseplate material includes but do not limit Possess the material of supportive in metal, glass, nylon, silicon, high molecule plastic etc., multiple analysis modules can be assembled on substrate, Also (d) is shown during multiple multiple modules such as Fig. 1 for turning into unit by analysis module and substrate in batch can be assembled, analysis module surface bag There is biomolecule, biomolecule includes but is not limited to biological point of albumen, antibody, polypeptide, amino acid, carbohydrate, enzyme, nucleic acid etc. Son and organic molecule, further comprising a kind of closing molecule, closing molecule is used to close the non-specific of chip surface chip surface Property binding site, closing molecule include be not limited to BSA, amino acid, sugar, milk, casein, surfactant, polyethylene glycol, sugar The biomolecule and organic molecule with hydrophobic binding characteristic such as alcohol, the analysis module of different chip is by same reaction condition Generation, substrate can be fabricated to sunk structure, and chip is placed on it and holding surface smooth as shown in Figure 3.
The analysis method of the biological specimen of present invention invention:(1) capture molecule is coated in and possesses adsorption capacity or covalent In the materials A of coupling capacity or material is cut into small module to be coated with;(2) enter by the materials A of well cutting or by materials A It is assembled on baseplate material B after row cutting, or materials A is assembled on substrate B is cut, form analysis chip C, analyzes core Piece C can further cut many analysis chips of generation, and the chip C after cutting can further be assembled in the new of formation on substrate and divide Analysis chip;(2) analysis chip C is closed with the reagent containing closing component;(3) by analysis chip C in molecules detected thing Contact;(4) cleaning analysis chip C;(5) analysis chip C with containing being contacted with markd molecular agents;(6) if the mark of step 6 Son score for fluorescence molecule or quantum dot then utilize light source activation, is detected using fluorescence detector;(7) if step 6 Mark molecule is enzyme or direct light emitting molecule, and analysis chip further contacts to form luminous signal using luminous with reaction reagent Signal detector is detected;The closing of analysis chip can be to fit together, also after substrate and analysis module individually closing Can analysis module together with substrate mounting after closed, the molecule of mark include but is not limited to fluorescence molecule, quantum dot, can The luminous enzyme of catalytic substrate, molecule that can be directly luminous by reacting triggering.It is of the invention in the detection process of signal Analysis In method, need to be excited using light source if the label of mark molecule is for fluorescence molecule or quantum dot, recycle letter Number collection CCD or PMT or PD (photoelectric tube) carry out signal acquisition, if mark molecule for can trigger chemiluminescent point Son, then first carry out luminous triggering reaction, and such as horseradish peroxidase-labeled needs to be reacted with luminol substrate reagent To trigger chemiluminescence signal, chip substrate of the invention can also be integrated with telegraph circuit for reacting generation telecommunications on chip Number detection.
Chip of the invention can make a kind of kit, in kit include chip, included on the chip substrate and Integrated analysis module, analysis module is coated with capture molecule, on chip containing closing molecule can effectively reduce it is non-specific Property combination, comprising cleaning reagent in kit, cleaning reagent comprises at least a kind of buffer salt and a kind of antiseptic ingredient and uses In the non-specific binding molecule and luminous substrate molecule of cleaning chip, labelled reagent is included in kit, in the reagent Mark molecule can be combined with captured molecule, and capture molecule, captured molecule, mark molecule form complex.If mark Molecule is the inspection that fluorescence molecule or quantum dot molecule can directly be carried out by optical excitation and CCD or PMT or PD (photoelectric tube) Survey.If the label of mark molecule is enzyme, kit is further included if horseradish peroxidase or alkaline phosphatase A kind of substrate reagent, contains luminous substrate in substrate reagent, if the label of mark molecule is direct light emitting molecule, such as acridine Ester, acridine sulfonamide, acridine acyl ammonia or its analog, then react shape containing reaction reagent in substrate reagent with direct light emitting molecule Into luminous signal, signal detection is carried out by CCD or PMT.
Application Example:
Reagent 1:
Tris 10mL 0.01M/L;HCL 0.0003N/L;
Regulation pH to 8.5,0.22 μm filters are filtered
Reagent 2:
Imidazoles 2.72g/L;Tween 0.2mL/l;NaCL 8.76g/L;8.5,0.22 μm of pH to, filter is filtered
Reagent 3:
0.58g/L Na2HPO4,0.05g/L KCl, 0.05g/L K3PO4,2.0g/L NaCl, BSA 10g/L, TWEEN 4mL/l;PH 7.4., 0.22 μm of filter is filtered
Reagent 4:
Mab PCT 16B5 Cat.#4PC47 hytest 1mg/mL
Sodium azide 0.1%
Reagent 5:
Mab PCT 42 Cat.#4C10 hytest 2mg/mL
Sodium azide 0.1%
Reagent 6:
PCT recombinant protein c at.#8PC5 50ng/mL
Sodium azide 0.1%
Reagent 7:
Mab CRP C2 Cat.#4C28 hytest 1mg/mL
Sodium azide 0.1%
Reagent 8:
Mab CRP C6 Cat.#4C28 hytest 2mg/mL
Sodium azide 0.1%
Reagent 9
The anti-source Cat.#8C72 hytest 20ug/mL of CRP
Sodium azide 0.1%
Reagent 10
HNO30.15M;H2O20.7%, Triton-100 0.25%;NaOH 0.125M;
Reagent 11
9- (4- chlorophenylthio benzoyls Oxymethylene) -10- methyl -9,10- acridans-disodium salt 100mg/L, N, N dimethyl acridine nitrate, 1.0mg/L lauryl sodium sulfate, 0.8g/L sodium sulfites, 5mg/L TWEEN-20,0.31g/L The Tris buffer systems PH 9.10 of 0.26mol/L.
Application Example 1
The Polystyrene plastic plate cleaning, drying of reagent 1 of 100mmX100mmX1mm is taken, is positioned in plate, by reagent 4 Protein concentration is diluted to 20ug/mL, adds and submerge in plate XPS, room temperature 2 hours, and 4 DEG C are spent night;With reagent to flat Plate is cleaned, and is dried under cleaning condition.The fritter (hereinafter referred to as PCT analysis modules) of precision laser cutting 5mmX5mm;
The Polystyrene plastic plate cleaning, drying of reagent 1 of 100mmX100mmX1mm is taken, is positioned in plate, by reagent 7 Protein concentration is diluted to 15ug/mL, adds and submerge in plate XPS, room temperature 2 hours, and 4 spend night;With reagent to flat board Cleaned, and dried under cleaning condition.The fritter (hereinafter referred to as CRP analysis modules) of precision laser cutting 5mmX5mm;
Cutting glass plate is into 1cmX3cmx2mm fritters as substrate;PCT analysis modules and CRP points are adhered on each substrate Analysis module, forms analysis chip;
Analysis chip is placed and closed as injected reagent 3 in plate, and room temperature is taken out for 3 hours;
Take reagent 580ul and add 600ul reagents 1, be subsequently adding the 0.5mmol/l acridinium esters of 150ul, mix, room temperature is kept away Light 20 minutes, adds lysine, 180ul reagents 1 to place 30 minutes, obtains acridinium ester label.PCT- labelled reagents,
Take reagent 870ul and add 600ul reagents 1, be subsequently adding the 0.5mmol/l acridinium esters of 150ul, mix, room temperature is kept away Light 20 minutes, adds lysine, 180ul reagents 1 to place 30 minutes, obtains acridinium ester label.CRP- labelled reagents;
By PCT- labelled reagents and CRP labelled reagents according to 1:1 ratio is mixed, and obtains PCT-CRP labelled reagents;
Reagent 6 is diluted into PCT concentration, the dilution configuration of reagent 9:
Standard liquid 1:PCT 0.1ng/mL CRP 0.5ug/mL;Standard liquid 2:PCT 0.5ng/mL CRP 1ug/ mL;Standard liquid 3:PCT 1ng/mL CRP 2ug/mL;Standard liquid 4:PCT 10ng/mL CRP 10ug/mL;Standard liquid 5:PCT 30ng/mL CRP 20ug/mL;
Testing process is as follows, and (as sample) in standard liquid is immersed in analysis chip, is incubated at room temperature 5 minutes, with examination The cleaning of agent 2 chip twice, then analysis chip is immersed in PCT-CRP labelled reagents is incubated 5 minutes, is cleaned with cleaning reagent 2 Chip twice, chip is placed in reagent 10 while carrying out CCD detection luminous signals.
After standard reagent is detected and sets up luminous signal standard curve, with reagent 6 and the addition serum of reagent 9, pass through Weight method configuration is obtained, sample 1:CRP 2ug/MLPCT 0.5ng/mL, sample 2:CRP 5ug/MLPCT 5ng/mL, sample 3: CRP 10ug/MLPCT 30ng/mL, repeat above-mentioned flow sample is tested with analysis chips, the test result such as institute of table 1 Show:
Table 1
CRP(ug/ml) Configuration concentration Chip 1 Chip 2 Chip 3 Chip 4 Chip 5 Chip 6 Chip 7 Chip 8 CV Average
Sample 1 2 2.10 2.10 2.04 2.10 2.20 1.90 2.20 2.20 4.86% 2.11
Sample 2 5 5.15 5.15 5.15 5.15 4.85 4.85 4.85 5.15 3.08% 5.04
Sample 3 10 10.80 10.40 9.40 9.60 9.60 9.80 9.90 10.40 4.92% 9.99
PCT(ng/ml) Configuration concentration Chip 1 Chip 2 Chip 3 Chip 4 Chip 5 Chip 6 Chip 7 Chip 8 CV Average
Sample 1 0.5 0.51 0.48 0.52 0.52 0.53 0.56 0.53 0.48 5.45% 0.51
Sample 2 5 5.15 5.15 5.15 5.00 5.15 4.90 5.15 5.80 5.16% 5.18
Sample 3 30 30.90 29.10 29.10 30.90 29.10 29.10 29.10 29.10 2.82% 29.55
Application Example 2
Epoxy alkyl modification chip (telecheminternational CAT:SME2 25X76mm) carried out clearly with reagent 1 Wash, be positioned in plate, the protein concentration of reagent 4 is diluted to 20ug/mL, XPS is submerged in addition plate, room temperature 2 is small When, 4 spend night;Flat board is cleaned with reagent, and is dried under cleaning condition.The fritter of precision laser cutting 5mmX5mm (hereinafter referred to as PCT analysis modules);
Epoxy alkyl modification chip (telecheminternational CAT:SME2 25X76mm) carried out clearly with reagent 1 Wash, be positioned in plate, the protein concentration of reagent 7 is diluted to 15ug/mL, XPS is submerged in addition plate, room temperature 2 is small When, 4 spend night;Flat board is cleaned with reagent, and is dried under cleaning condition.The fritter of precision laser cutting 5mmX5mm (hereinafter referred to as PCT analysis modules);
Cutting glass plate is into 1cmX3cmx2mm fritters as substrate;PCT analysis modules and CRP points are adhered on each substrate Analysis module, forms analysis chip;
Reagent 5,300uL is taken, 14uL Sulfo-NHS-LC-Biotinylation Kit (THERMO) are added, 37 DEG C incubate Educate 39 minutes, add in super filter tube, 12000Xg is centrifuged 10 minutes, and pipettor is mixed and is centrifuged again 10 minutes, add 0.3mL marks Buffer solution 6000Xg is centrifuged 10 minutes.The solution in centrifuge tube is collected, supplemental markers buffer solution to 0.5mL adds 0.4mL strepto-s Avidin marks alkaline phosphatase (THERMO AP Streptavidin 434322) to be incubated at room temperature 30 minutes.By cross-linking agent mistake Sephadex g200 are purified, and obtain PCT- labelled reagents.
Reagent 8,500uL is taken, 14uL Sulfo-NHS-LC-Biotinylation Kit (THERMO) are added, 37 DEG C incubate Educate 39 minutes, add in super filter tube, 12000Xg is centrifuged 10 minutes, and pipettor is mixed and is centrifuged again 10 minutes, add 0.3mL marks Buffer solution 6000Xg is centrifuged 10 minutes.The solution in centrifuge tube is collected, supplemental markers buffer solution to 0.5mL adds 0.6mL strepto-s Avidin marks alkaline phosphatase (THERMO AP Streptavidin 434322) to be incubated at room temperature 30 minutes.By cross-linking agent mistake Sephadex g200 are purified, and obtain CRP- labelled reagents.
PCT labelled reagents are mixed in proportion with CRP labelled reagents 1: 1;
Analysis chip is placed and closed as injected reagent 3 in plate, and room temperature is taken out for 3 hours;
Reagent 6 is diluted into PCT concentration, the dilution configuration of reagent 9:
Standard liquid 1:CRP 0.5ug/mL;Standard liquid 2:PCT 0.5ng/mL CRP 1ug/mL;Standard liquid 3: PCT 1ng/mL CRP 2ug/mL;Standard liquid 4:PCT 10ng/mL CRP 10ug/mL;Standard liquid 5:PCT 30ng/mL CRP 20ug/mL:
Testing process is as follows, and (as sample) in standard liquid is immersed in analysis chip, is incubated at room temperature 5 minutes, with examination The cleaning of agent 2 chip twice, then analysis chip is immersed in PCT-CRP labelled reagents is incubated 5 minutes, is cleaned with cleaning reagent 2 Chip twice, chip is placed in reagent 11 while carrying out CCD detection luminous signals.
After standard reagent is detected and sets up luminous signal standard curve, with reagent 6 and the addition serum of reagent 9, pass through Weight method configuration is obtained, sample 1:CRP 2ug/MLPCT 0.5ng/mL, sample 2:CRP 5ug/mLPCT 5ng/mL, sample 3: CRP 10ug/MLPCT 30ng/mL, repeat above-mentioned flow sample is tested with analysis chips, the test result such as institute of table 2 Show:
Table 2
CRP(ug/ml) Configuration concentration Chip 1 Chip 2 Chip 3 Chip 4 Chip 5 Chip 6 Chip 7 Chip 8 CV Average
Sample 1 2 1.92 1.92 1.92 2.08 2.08 2.08 2.08 1.92 4.28% 2.00
Sample 2 5 4.85 5.15 4.85 5.15 4.85 4.85 4.85 5.15 3.13% 4.96
Sample 3 10 10.25 9.75 9.75 9.75 9.75 10.25 9.75 9.75 2.34% 9.88
PCT(ng/ml) Configuration concentration Chip 1 Chip 2 Chip 3 Chip 4 Chip 5 Chip 6 Chip 7 Chip 8 CV Average
Sample 1 0.5 0.53 0.48 0.48 0.53 0.53 0.48 0.53 0.48 5.35% 0.50
Sample 2 5 5.15 4.85 5.15 5.15 5.15 5.15 5.15 4.85 2.74% 5.08
Sample 3 30 30.81 30.81 30.81 30.81 30.81 29.19 29.19 29.19 2.78% 30.20
Application Example 3
Epoxy alkyl modification chip (telecheminternational CAT:SME2 25X76mm) carried out clearly with reagent 1 Wash, be positioned in plate, the protein concentration of reagent 4 is diluted to 20ug/mL, XPS is submerged in addition plate, room temperature 2 is small When, 4 spend night;Flat board is cleaned with reagent, and is dried under cleaning condition.The fritter of precision laser cutting 5mmX5mm (hereinafter referred to as PCT analysis modules);
Epoxy alkyl modification chip (telecheminternational CAT:SME2 25X76mm) carried out clearly with reagent 1 Wash, be positioned in plate, the protein concentration of reagent 7 is diluted to 10ug/mL, XPS is submerged in addition plate, room temperature 2 is small When, 4 spend night;Flat board is cleaned with reagent, and is dried under cleaning condition.The fritter of precision laser cutting 5mmX5mm (hereinafter referred to as PCT analysis modules);
Cutting glass plate is into 1cmX3cmx2mm fritters as substrate;PCT analysis modules and CRP points are adhered on each substrate Analysis module, forms analysis chip;
Analysis chip is placed and closed as injected reagent 3 in plate, and room temperature is taken out for 3 hours;
By fluorescent latex microspherulite diameter 100nm, excitation wavelength 480nm pH 6.0,50mM the MES buffering with carboxyl Liquid is cleaned, and diluted concentration is 0.01mg/mL, takes 2mL, adds EDC (5mg/mL) 200uL, is mixed and is added sulfo-NHS (2mg/ML) 200uL, reaction priming reaction 0.5 hour, reagent 5 adds 80uL room temperature reactions 2 hours, adds the second of 0.01g/mL Diamines 500uL, reacts 1 hour, and centrifugation buffer solution for cleaning adds reagent 3 to clean twice, adds buffering agents 3,10mL, obtains Obtain PCT- microballoon labelled reagents.
By fluorescent latex microspherulite diameter 100nm, excitation wavelength 480nm pH 6.0,50mM the MES buffering with carboxyl Liquid is cleaned, and diluted concentration is 0.01mg/mL, takes 2mL, adds EDC (5mg/mL) 200uL, is mixed and is added sulfo-NHS (2mg/ML) 200uL, reaction priming reaction 0.5 hour, reagent 8 adds 60uL room temperature reactions 2 hours, adds the second of 0.01g/mL Diamines 500uL, reacts 1 hour, and centrifugation buffer solution for cleaning adds reagent 3 to clean twice, adds buffering agents 3,10mL, obtains Obtain CRP microballoon labelled reagents.
PCT- microballoons mark is related to carry out mixing acquisition PCT-CRP microballoon labelled reagents with CRP microballoons labelled reagent;
Reagent 6 is diluted into PCT concentration, the dilution configuration of reagent 9;
Standard liquid 1:CRP 0.5ug/mL;Standard liquid 2:PCT 0.5ng/mL CRP 1ug/mL;Standard liquid 3: PCT 1ng/mL CRP 2ug/mL;Standard liquid 4:PCT 10ng/mL CRP 10ug/mL;Standard liquid 5:PCT 30ng/mL CRP 20ug/mL;
Testing process is as follows, and (as sample) in standard liquid is immersed in analysis chip, is incubated at room temperature 5 minutes, with examination The cleaning of agent 2 chip twice, then analysis chip is immersed in PCT-CRP labelled reagents is incubated 5 minutes, is cleaned with cleaning reagent 2 Chip twice, with laser excitation, while detecting fluorescence signal using PMT.
After standard reagent is detected and sets up luminous signal standard curve, with reagent 6 and the addition serum of reagent 9, pass through Weight method configuration is obtained, sample 1:CRP 2ug/MLPCT 0.5ng/mL, sample 2:CRP 5ug/MLPCT 5ng/mL, sample 3: CRP 10ug/MLPCT 30ng/mL, repeat above-mentioned flow sample is tested with analysis chips, test result such as table 3:
Table 3
cRP(ug/ml) Configuration concentration Chip 1 Chip 2 Chip 3 Chip 4 Chip 5 Chip 6 Chip 7 Chip 8 CV Average
Sample 1 2 1.86 2.10 2.10 2.14 1.90 1.86 1.86 1.86 6.55% 1.96
Sample 2 5 5.30 5.30 5.20 5.30 5.10 4.70 5.30 5.10 4.70 5.16
Sample 3 10 9.40 9.40 10.60 10.60 9.40 10.50 10.50 9.40 6.17% 9.98
PcT(ng/ml) Configuration concentration Chip 1 Chip 2 Chip 3 Chip 4 Chip 5 Chip 6 Chip 7 Chip 8 CV Average
Sample 1 0.5 0.46 0.46 0.46 0.49 0.47 0.54 0.46 0.46 5.95% 0.48
Sample 2 5 4.65 4.65 4.65 5.35 4.65 5.35 4.65 4.65 6.72% 4.83
Sample 3 30 32.10 27.90 27.90 27.90 27.90 32.10 32.10 27.90 7.37% 29.48
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.

Claims (10)

1. a kind of modularization biological sample analysis chip, it is characterised in that:Baseplate material, analysis module including water-wetted surface; The baseplate material of described water-wetted surface is used to support, fixes and integrated analysis module;The analysis module is assembled in substrate material On material;Capture molecule is coated with described analysis module surface;Base behind the analysis module surface and Assembly analysis module Plate material surface comprises at least a kind of closing component, and described component of closing is for avoiding albumen or other biological and organic molecule Non-specific adsorption;Described analysis module is to be assembled on baseplate material after the completion of being coated with.
2. modularization biological sample analysis chip as claimed in claim 1, it is characterised in that:Described baseplate material is metal One kind in the baseplate material of material, glass material, silicon materials or high molecule plastic material.
3. modularization biological sample analysis chip as claimed in claim 1, it is characterised in that:The water-wetted surface is substrate material Material is hydrophilic in itself, hydrophobic material is modified hydrophilic or the water-wetted surface for being changed into hydrophilic nmature is processed by sealer.
4. modularization biological sample analysis chip as claimed in claim 1, it is characterised in that:Described capture molecule is used to catch Obtain the material to be analyzed in biological sample, the capture molecule is from albumen, glycoprotein, polypeptide, nucleic acid, organic molecule, many Sugar or antibody class biomolecule.
5. modularization biological sample analysis chip as claimed in claim 1, it is characterised in that:Described analysis module is selected from What surface had carboxyl, amino, chloromethyl, epoxy alkyl, biotin, aldehyde radical or a sulfydryl modification possesses conjugated biological molecules ability Material;Possesses the metal material of conjugated biological molecules ability;And surface possess Biomolecular adsorption ability polystyrene, One kind in nylon or cellulose acetate material.
6. modularization biological sample analysis chip as claimed in claim 1, it is characterised in that:Described closing molecule is ox blood Pure albumen, tween, skimmed milk power, casein, amino acid or xylitol have biological or organic point of hydrophobic binding characteristic Son.
7. the modularization biological sample analysis chip described in claim 1 is further used as module assembled group on bigger substrate The chip of Cheng Xin.
8. modularization biological sample analysis chip as claimed in claim 1, it is characterised in that:Also include the reference for internal reference Module, reference module is directly labeled with the analog of determinand or determinand, for carrying out reference to chip and to detection signal.
9. a kind of biological sample analysis method of modularization biological sample analysis chip described in application claim 1, its feature exists In:Comprise the following steps:
(1) capture molecule is coated in the materials A for possessing adsorption capacity or covalent coupling ability or is cut into material small Module is coated with;
(2) it is assembled in after being cut by the materials A of well cutting or by materials A on baseplate material B, or materials A is assembled in base Cut on plate B, formed analysis chip C, analysis chip C can further be cut the multiple chips of generation or by multiple analysis chips C is further assembled in the new analysis chip formed on substrate;
(3) analysis chip C is closed with the reagent containing closing component;
(4) analysis chip C is contacted in molecules detected thing;
(5) cleaning analysis chip C;
(6) analysis chip C with containing being contacted with markd molecular agents;
(7) entered with signal pickup assembly by light source activation if the mark molecule of step (6) is for fluorescence molecule or quantum dot Row detection;If the mark molecule of step (6) is enzyme or direct light emitting molecule, analysis chip is further contacted with reaction reagent Luminous signal is formed to be detected using signal pickup assembly.
10. a kind of kit, it is characterised in that:Including
(1) analysis chip described in claim 1;
(2) cleaning reagent;
(3) there is the reagent of binding ability component containing markd and checking matter.
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CN115993350A (en) * 2021-10-18 2023-04-21 中国科学院化学研究所 A fully printed biological detection chip and its preparation method and application

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CN1641355A (en) * 2004-12-20 2005-07-20 山东省医药生物技术研究中心 Protein chip for detecting blood and cerebro spinal fluid pathogen antibody, and its preparing method and use
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CN1204363A (en) * 1995-10-06 1999-01-06 麦克罗克隆宁Cccd公司 Compact cell culture slide
CN1472339A (en) * 2002-08-02 2004-02-04 � 赵 High-flux cell biological chip testing technology and reagent case
CN1641355A (en) * 2004-12-20 2005-07-20 山东省医药生物技术研究中心 Protein chip for detecting blood and cerebro spinal fluid pathogen antibody, and its preparing method and use
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CN112326949A (en) * 2017-11-10 2021-02-05 深圳市真迈生物科技有限公司 Surface chemical modification method, chip preparation method and chip
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