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CN106093402A - Hepatitis C virus antigen-antibody combined detection kit - Google Patents

Hepatitis C virus antigen-antibody combined detection kit Download PDF

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Publication number
CN106093402A
CN106093402A CN201610378119.1A CN201610378119A CN106093402A CN 106093402 A CN106093402 A CN 106093402A CN 201610378119 A CN201610378119 A CN 201610378119A CN 106093402 A CN106093402 A CN 106093402A
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China
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hcv
diluting liquid
sample diluting
hepatitis
antibody
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胡道奇
毛金武
周咏武
李光
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HUNAN KANGRUN PHARMACEUTICAL CO Ltd
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HUNAN KANGRUN PHARMACEUTICAL CO Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/576Immunoassay; Biospecific binding assay; Materials therefor for hepatitis
    • G01N33/5767Immunoassay; Biospecific binding assay; Materials therefor for hepatitis non-A, non-B hepatitis

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Abstract

The invention discloses a kind of hepatitis C virus antigen-antibody combined detection kit, including: the first HCV-Ab IgG cAg monoclonal antibody, a HCV restructuring chimeric antigen, the first sample diluting liquid, the second sample diluting liquid, the second HCV-Ab IgG cAg monoclonal antibody of the first enzyme labelling, the 2nd HCV restructuring chimeric antigen, the Ligands of second enzyme labelling, developer and the stop buffer of the first ligand-labeled;First sample diluting liquid includes reducing agent, first surface activating agent and the first denaturant;Second sample diluting liquid includes second surface activating agent and the second denaturant.Former dose of this hepatitis C virus antigen-antibody combined detection kit is by opening in envelope antigen and sample the disulfide bond of mispairing in antigen antibody complex in the first sample diluting liquid, second sample diluting liquid destroys HCV-cAg and HCV antibody complex, discharge more antigen, thus improve the sensitivity of detection.

Description

Hepatitis C virus antigen-antibody combined detection kit
Technical field
The present invention relates to field of biological detection, especially relate to a kind of hepatitis C virus antigen-antibody combined detectable Box.
Background technology
Hepatitis C is that a kind of liver acute and chronic caused by hepatitis C virus (Hepatitis C virus, HCV) is scorching Disease, shows according to WHO statistics, there are about 200,000,000 people the most in the world and infect hepatitis C virus, account for the 3% of population in the world, China is about Have 40,000,000~60,000,000.Hepatitis C relatively hepatitis B is more easy to liver cirrhosis, fibrosis occur, causes hepatocarcinoma, has predictive display, Replacement hepatitis B is become the another big virus threatening human health after HIV (human immunodeficiency virus) by hepatitis C in the near future Killer.Although hepatitis C virus is very big to human health risk, currently also there is no vaccine can prevent, HCV early diagnosis and Source of infection examination has directive function to clinical treatment and Disease epizootic.Therefore, find simple to operate, sensitive quick, cheap, Method accurately of testing realizes the detection to HCV, for the whole world, especially developing country, has great meaning.
HCV is the positive single strand RNA virus having peplos spherical in shape, belongs to flaviviridae family, total length about 9500 base.HCV base Because group both sides are respectively 5 ' and 3 ' noncoding regions, centre is opening code-reading frame (ORF), is divided into structural area and non-structural district.Structure District includes core protein district (C) and Liang Ge envelope protein district (E1, E2), is separately encoded core protein and envelope protein.Non-structural Protein region includes NS2, NS3, NS4 and NS5 district, and encoding function albumen, such as protease (NS2, NS3 and NS4A district), helicase And the RNA polymerase (NS5B district) of dependenc RNA (NS3).Tetracycline regulated system, containing about 190aa, rises in virus replication To very important effect.Generally use gene engineering expression said structure and non-structural protein as envelope antigen, set up The ELISA method of detection of anti-HCV.HCV genome has significant heterogeneity, and same gene group difference field-mutation degree has Marked difference.5 ' noncoding regions are the most conservative, it has also become the focus of HCV molecular diagnosis research.
Traditional hepatitis C virus detection technique mainly has: (1) PCR method detection HCV RNA;(2) immunity Method detection C hepatitis virus antigen or antibody.The detection of PCR method is mainly used in the selection of antiviral therapy and supervises with curative effect Surveying, but it need to operate in strict accordance with PCR rule of operation, and testing staff need to be through professional training and obtain corresponding qualification, and sample Quality control requirement high, it is necessary to being cryogenic conditions censorship in latter 2 hours of blood sampling, aseptic extracting RNA, easily because operation, setting The factors such as standby and environment cause error, thus produce false positive or false negative.The detection of hepatitis C immunological method divides again antibody test And Detection of antigen.HCV antibody test is the most the most frequently used detection method, but its fatal defects is to there is " window phase ", i.e. HCV Producing the middle time having 40-70 days to HCV antibody after infection, blood donor is the most infected and has infectiousness, but uses mesh Before antibody test reagent cannot detect, this stage be referred to as infecting after window phase (Perseroconversion before seropositive conversion Window Phase,PWP).The existence of window phase is the main cause of blood transfusion infection.The blood transfusion postoperative infection of hepatitis C accounts at present The 70% of hepatitis cases, and more have 80-90% to be belonging to postoperative infection of transfusing blood in hepatitis C virus infection;And hepatitis C antigen Detection can make the window phase of detection about 50 days averagely in advance, shorten the risk of window phase HCV infection.Occur at HCV nucleic acid After 1-2 days in, arise that HCV-cAg in the infected's body, and have to the level of HCV nucleic acid certain relevant Property, can be as the mark of HCV detection.
Hepatitis C virus antigen-antibody combined detectable is to detect HCV-cAg and HCV antibody simultaneously, Not only can shorten the window phase of detection, it is also possible to differentiation is HCV Current Infection or previous infection, can be used for the early stage of HCV Detection and treatment are evaluated, and provide important reference for guidance clinic;Meanwhile, this reagent can be used for the examination of blood source, can effectively carry Height blood and transfusion safety, antigen-antibody detects simultaneously and also improves work efficiency, saved cost.
But, owing to patient (average 49 days) after infecting hepatitis C virus about a period of time can produce antibody, formed Antigenantibody complex, after producing antigenantibody complex, because free antigen reduces, makes the inspection of HCV antigen Go out rate to be substantially reduced.General detection HCV antigen all can add detergent and denaturant in sample diluting liquid, destroys complex, releases Put antigen, but this detergent and denaturant the most also destroy the HCV antibody in sample, cause cannot detecting in joint inspection reagent HCV antibody, causes the missing inspection of antagonist.
Hepatitis C virus antigen-antibody combined detection kit the most on the market is all to try to use gentle de-sludging Agent and denaturant, reduce the impact of HCV antibody in testing sample as far as possible, if but detergent and denaturant intensity are strong or Not, it is the most incomplete that the immune complex in specimen to be measured destroys concentration, and HCV-cAg can not discharge completely Coming, the HCV-cAg content in testing sample is the fewest, and the detection sensitivity for HCV-cAg and HCV antibody is relatively low, Easily cause missing inspection.
Summary of the invention
Based on this, it is necessary to providing a kind of can improve for HCV-cAg and the associating of the detection sensitivity of HCV antibody Detection kit.
A kind of hepatitis C virus antigen-antibody combined detection kit, is used for detecting in sample whether contain hepatitis C Virus or antibody of HCV, including: the first HCV-Ab IgG cAg monoclonal antibody, HCV restructuring chimeric antigen, first sample Product diluent, the second sample diluting liquid, the second HCV-Ab IgG cAg monoclonal antibody of the first enzyme labelling, the second of the first ligand-labeled HCV restructuring chimeric antigen, the Ligands of second enzyme labelling, developer and stop buffer;
Described first HCV-Ab IgG cAg monoclonal antibody, the second HCV-Ab IgG cAg monoclonal antibody of described first enzyme labelling, described 2nd HCV restructuring chimeric antigen of the oneth HCV restructuring chimeric antigen and described first ligand-labeled does not the most occur to intersect instead Should, described first part can be combined with described Ligands;
Described first sample diluting liquid according to mass percentage concentration include the reducing agent of 0.05%~5%, 0.005%~ The first surface activating agent of 0.1% and first denaturant of 0.005%~0.5%;
Described second sample diluting liquid includes second surface activating agent and the second denaturant;
In described second sample diluting liquid, the mass percentage concentration of described second surface activating agent is 0.5%~10%, institute The concentration stating the second denaturant is 0.5mol/L~10mol/L.
In one embodiment, described reducing agent is selected from dithiothreitol, DTT, three (2-carboxyethyl) phosphine, cysteine, β-mercapto At least one in base ethanol and reduced glutathion;
In described first sample diluting liquid, the mass percentage concentration of described reducing agent is 0.3%~1%.
In one embodiment, described first surface activating agent is selected from dodecyl-dimethyl amine second lactone, dodecyl At least one in alanine, sarcosyl, dodecyl sodium sulfate and cetrimonium bromide;
In described first sample diluting liquid, the mass percentage concentration of described first surface activating agent be 0.01%~ 0.08%.
In one embodiment, described first denaturant is selected from guanidine hydrochloride, carbamide, Tween-20 and Polyethylene Glycol octyl group benzene At least one in base ether;
In described first sample diluting liquid, the mass percentage concentration of described first denaturant is 0.01%~0.1%.
In one embodiment, described second surface activating agent is selected from dodecyl-dimethyl amine second lactone, dodecyl At least one in alanine, sarcosyl, dodecyl sodium sulfate and cetrimonium bromide;
In described second sample diluting liquid, the mass percentage concentration of described second surface activating agent is 1%~5%.
In one embodiment, described second denaturant is selected from guanidine hydrochloride, carbamide, Tween-20 and Polyethylene Glycol octyl group benzene At least one in base ether;
In described second sample diluting liquid, the concentration of described second denaturant is 1mol/L~5mol/L.
In one embodiment, the solvent of described first sample diluting liquid is phosphate buffer or carbonate buffer solution, The solvent of described second sample diluting liquid is phosphate buffer or carbonate buffer solution.
In one embodiment, described sample, described first sample diluting liquid and the use of described second sample diluting liquid Ratio is 1~10:1~18:1~18.
In one embodiment, described first enzyme is horseradish peroxidase or alkali phosphatase, and described second enzyme is Radix Cochleariae officinalis Peroxidase or alkali phosphatase, described first part is biotin or Avidin, and described Ligands is biotin or affine Element.
This hepatitis C virus antigen-antibody combined detection kit is beaten by the reducing agent in the first sample diluting liquid Open that envelope antigen is internal or the disulfide bond of mispairing between antigen, open in sample mispairing two sulfur in antigen antibody complex simultaneously Key, so that outside epi-position is preferably exposed to, it is simple to immunity association reaction, the first denaturant in the first sample diluting liquid is permissible Renaturation antigen, improves the specific recognition capability of antigen, can also reduce the non-specific binding of antibody, the second diluted sample simultaneously Second surface activating agent and the second denaturant in liquid can destroy HCV-cAg and HCV antibody complex, discharge more multi-resistance Former, thus improve the sensitivity of Detection of antigen.Relative to current business-like hepatitis C virus antigen-antibody combined detection examination Agent box, this hepatitis C virus antigen-antibody combined detection kit is sensitive for the detection of HCV-cAg and HCV antibody Spend higher.
Accompanying drawing explanation
Fig. 1 is to add the principle schematic after the first sample diluting liquid processes during sample detection, wherein,Be first resist HCV-cAg monoclonal antibody,It is HCV restructuring chimeric antigen (mispairing disulfide-bonded),It is that a HCV restructuring is embedding Close antigen,For the HCV-cAg in sample and HCV antibody conjugates (mispairing disulfide-bonded),For in sample Free HCV-cAg,For the free HCV antibody in sample;
Fig. 2 is to add the principle schematic after the second sample diluting liquid processes during sample detection, wherein,In sample HCV-cAg and HCV antibody conjugates (non-specific binding).
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, real with concrete below in conjunction with the accompanying drawings Execute example the detailed description of the invention of the present invention is described in detail.Elaborate a lot of detail in the following description so that Fully understand the present invention.But the present invention can implement to be much different from alternate manner described here, art technology Personnel can do similar improvement in the case of intension of the present invention, and therefore the present invention is not embodied as by following public Restriction.
Whether the hepatitis C virus antigen-antibody combined detection kit of one embodiment, be used for detecting in sample and contain Hepatitis C virus and antibody of HCV, including: the first HCV-Ab IgG cAg monoclonal antibody, a HCV restructuring inosculating antibody Former, the second HCV-Ab IgG cAg monoclonal antibody of the first sample diluting liquid, the second sample diluting liquid, the first enzyme labelling, the first part mark 2nd HCV restructuring chimeric antigen, the Ligands of second enzyme labelling, developer and the stop buffer of note.
First HCV-Ab IgG cAg monoclonal antibody, the second HCV-Ab IgG cAg monoclonal antibody of the first enzyme labelling, a HCV recombinate embedding The most there is not cross reaction in the 2nd HCV restructuring chimeric antigen closing antigen and the first ligand-labeled, and the first part can To be combined with Ligands.
Second HCV-Ab IgG cAg monoclonal antibody of the first enzyme labelling, the first ligand-labeled the 2nd HCV restructuring chimeric antigen and The Ligands of second enzyme labelling can be prepared voluntarily, it is also possible to directly buys.
In the application, the first HCV-Ab IgG cAg monoclonal antibody, HCV restructuring chimeric antigen, a second HCV-Ab IgG cAg Monoclonal antibody and the 2nd HCV restructuring chimeric antigen are purchased from Meridian Life Science company;The Ligands of second enzyme labelling Purchased from Nanjing Pan Gu's gene biological Engineering stock Co., Ltd;Second HCV-Ab IgG cAg monoclonal antibody of the first enzyme labelling and first 2nd HCV restructuring chimeric antigen of ligand-labeled is all to prepare voluntarily.
Preferably, the first enzyme is horseradish peroxidase (HRP) or alkali phosphatase, and second enzyme is horseradish peroxidase (HRP) or alkali phosphatase, the first part is biotin or Avidin, and Ligands is biotin or Avidin.
First sample diluting liquid includes the reducing agent of 0.05%~5%, 0.005%~0.1% according to mass percentage concentration First surface activating agent and first denaturant of 0.005%~0.5%.
The solvent of the first sample diluting liquid can be phosphate buffer or carbonate buffer solution.
In conjunction with Fig. 1, the first sample diluting liquid contains reducing agent and the first denaturant, and reducing agent is primarily to open and be coated Antigen internal or between the disulfide bond of mispairing, open the mispairing disulfide bond of antigen antibody complex in specimen to be measured simultaneously, from And outside making epi-position preferably be exposed to, it is simple to immunoreation;First denaturant major function is renaturation antigen, improves the spy of antigen Opposite sex identification ability, can also reduce the non-specific binding of antibody simultaneously.
Reducing agent selected from dithiothreitol, DTT (DTT), three (2-carboxyethyl) phosphine (TCEP), cysteine, beta-mercaptoethanol and At least one in reduced glutathion.
Preferably, in the first sample diluting liquid, the mass percentage concentration of reducing agent is 0.3%~1%.
Particularly preferred, in the first sample diluting liquid, reducing agent is beta-mercaptoethanol, and the percent mass of beta-mercaptoethanol is dense Degree is 0.5%.
First surface activating agent is selected from dodecyl-dimethyl amine second lactone, dodecyl alanine, dodecyl flesh At least one in propylhomoserin sodium (NLS), dodecyl sodium sulfate and cetrimonium bromide (CTAB).
Preferably, in the first sample diluting liquid, the mass percentage concentration of first surface activating agent is 0.01%~0.08%.
Particularly preferred, in the first sample diluting liquid, first surface activating agent is dodecyl sodium sulfate, dodecyl sulphur The mass percentage concentration of acid sodium is 0.05%.
At least one in guanidine hydrochloride, carbamide, Tween-20 and Triton X-100 of first denaturant.
Preferably, in the first sample diluting liquid, the mass percentage concentration of the first denaturant is 0.01%~0.1%.
Particularly preferred, in the first sample diluting liquid, the first denaturant is that the percent mass of Tween-20, Tween-20 is dense Degree is 0.03%.
Second sample diluting liquid includes second surface activating agent and the second denaturant.In second sample diluting liquid, the second table The mass percentage concentration of face activating agent is 0.5%~10%, and the concentration of the second denaturant is 0.5mol/L~10mol/L.
The solvent of the second sample diluting liquid can be phosphate buffer or carbonate buffer solution.
In conjunction with Fig. 2, containing second surface activating agent and the second denaturant in the second sample diluting liquid, second surface activating agent It is to destroy HCV-cAg and HCV antibody complex with the second denaturant, discharges more antigen, thus improve antigen inspection The sensitivity surveyed.
Second surface activating agent is selected from dodecyl-dimethyl amine second lactone, dodecyl alanine, dodecyl flesh At least one in propylhomoserin sodium, dodecyl sodium sulfate and cetrimonium bromide.
Preferably, in the second sample diluting liquid, the mass percentage concentration of second surface activating agent is 1%~5%.
Particularly preferred, in the second sample diluting liquid, second surface activating agent is sarcosyl, dodecyl The mass percentage concentration of sodium sarcosinate is 3%.
At least one in guanidine hydrochloride, carbamide, Tween-20 and Triton X-100 of second denaturant.
Preferably, in the second sample diluting liquid, the concentration of the second denaturant is 1mol/L~5mol/L.
Particularly preferred, in the second sample diluting liquid, the second denaturant is carbamide, and the concentration of carbamide is 3mol/L.
First sample diluting liquid, the second sample diluting liquid are used to the dilution of sample, sample, the first sample diluting liquid and The use ratio of two sample diluting liquids is 1~10:1~18:1~18.
Preferably, the use ratio of sample, the first sample diluting liquid and the second sample diluting liquid be 7~10:3~10:3~ 10。
Particularly preferred, the use ratio of sample, the first sample diluting liquid and the second sample diluting liquid is 10:5:5.
Developer and stop buffer select conventional reagent.
This hepatitis C virus antigen-antibody combined detection kit is beaten by the reducing agent in the first sample diluting liquid Open envelope antigen internal or between the disulfide bond of mispairing, open the mispairing disulfide bond of antigen antibody complex in sample simultaneously, So that outside epi-position is preferably exposed to, it is simple to immunoreation, the first denaturant in the first sample diluting liquid can resist with renaturation Former, improve the specific recognition capability of antigen, the non-specific binding of antibody can also be reduced, in the second sample diluting liquid simultaneously Second surface activating agent and the second denaturant can destroy HCV-cAg and HCV antibody complex, discharge more antigen, from And improve the sensitivity of Detection of antigen.Relative to current business-like hepatitis C virus antigen-antibody combined detection kit, The detection sensitivity of this hepatitis C virus antigen-antibody combined detection kit is higher.
This hepatitis C virus antigen-antibody combined detection kit, it is possible to ensure that the antigen-antibody in testing sample is multiple Compound is opened, and discharges HCV-cAg, can not destroy again the HCV antibody in testing sample, greatly improve antigen and antibody The sensitivity of detection.
Below the using method of above-mentioned hepatitis C virus antigen-antibody combined detection kit is briefly described.
The using method of above-mentioned hepatitis C virus antigen-antibody combined detection kit and the most business-like third type liver Scorching virus antigen-antibody combined detection kit is similar, hatch after differing only in addition the first sample diluting liquid 30min~ 50min, does not wash plate and adds the second sample diluting liquid and hatch.
Detailed process is as follows: the mixing preparing the first HCV-Ab IgG cAg monoclonal antibody and HCV restructuring chimeric antigen is molten Liquid, joins on microwell plate, through adsorbing, wash, close, completing after drying to be coated, then adds sample and the first sample diluting liquid, Do not wash plate after hatching 30min~50min and add the second sample diluting liquid, after hatching 30min, wash plate, be subsequently added into the first enzyme mark Second HCV-Ab IgG cAg monoclonal antibody, the 2nd HCV chimeric antigen of the first ligand-labeled and the Ligands of second enzyme labelling of note Mixed solution, wash plate after hatching 30min, add after nitrite ion fully reacts and add stop buffer, finally measure OD value.
Being below specific embodiment, the various instruments occurred in embodiment and reagent if not otherwise specified, all use This area conventional instrument or reagent.
The the first HCV-Ab IgG cAg monoclonal antibody used in embodiment is designated as AB1, AB1 purchased from U.S. meridian life Science company (article No.: C8A216M);Second HCV-Ab IgG cAg monoclonal antibody is designated as AB2, AB2 purchased from U.S. meridian Life science company (article No.: C8A017M);Oneth HCV restructuring chimeric antigen is designated as AG1, AG1 purchased from U.S. meridian Life science company (article No.: R01599);2nd HCV restructuring chimeric antigen is designated as AG2, AG2 purchased from U.S. meridian Life science company (article No.: R01600);The Avidin of HRP labelling is limited purchased from Nanjing Pan Gu's gene biological engineering share Company, article No.: TRP-10005.
The most there is not cross reaction in AB1, AB2, AG1, AG2.
AB2 uses HRP labelling, and the AB2 of HRP labelling uses sodium periodate labelling method to prepare, and detailed process is as follows: (1) claims Take 5mgHRP to be dissolved in 1mL distilled water;(2) in upper liquid, the 0.1M NaIO that 0.2mL newly joins is added4Solution, lucifuge under room temperature Stir 20 minutes.(3) loading in bag filter by above-mentioned solution, dialyse the sodium-acetate buffer of 1mM PH4.4,4 DEG C overnight. (4) add 20 μ L 0.2M PH9.5 carbonate buffer solutions, make the PH of above hydroformylation HRP be increased to 9.0~9.5, add immediately after In 10mg AB2 to 1mL0.01M carbonate buffer solution, room temperature lucifuge is gently mixed 2 hours.(5) 4mg/mL that 0.1mL newly joins is added NaBH4Liquid, mixing, then put 4 DEG C 2 hours.(6) above-mentioned liquid is loaded in bag filter, 0.15M PH7.4PBS is dialysed, 4 DEG C of mistakes Night.(7) 3000rpm is centrifuged half an hour, abandons supernatant.Precipitate semi-saturation ammonium sulfate washes secondary, and last precipitate is dissolved on a small quantity In the PBS of 0.15M PH7.4.(8) above-mentioned solution is loaded in bag filter, the PB buffer saline of 0.15M PH7.4 is dialysed, goes Except (detecting with Nai Shi reagent) after ammonium ion, 10,000rpm are centrifuged 30 minutes removal precipitations, and supernatant is enzyme conjugates;(9) Add equivalent glycerol, after subpackage, stored frozen.
AG2 uses biotin labeling, and the preparation process of biotin labeled AG2 is as follows:
(1) PH 7.4 20mmPB buffer 4 degree dialysis antigen 2 hours.(2) mix according to AG2:BIO (1:5) mass ratio Place 1.5 hours at 4 degree after conjunction.(3) PH 7.4 20mmPB buffer 4 degree dialysis AG2 and BIO mixture 3 hours.After subpackage, Stored frozen.
Choose 10 parts of positive samples and 10 parts of ' negative ' specimens carry out antigen-antibody joint inspection test, positive sample and ' negative ' specimens Being all that the test kit assert through Bureau of Drugs Supervision confirms, specifying information is as follows:
Embodiment 1
Using phosphate buffered saline the first sample diluting liquid and the second sample diluting liquid, concrete composition is as follows.
The beta-mercaptoethanol of the first sample diluting liquid: 0.5wt%, the dodecyl sodium sulfate of 0.05wt%, 0.03wt% Tween-20.
The sarcosyl of the second sample diluting liquid: 3wt% and the carbamide of 3mol/L.
Diluting AB1 with carbonate buffer solution is 3 μ g/mL to concentration, and diluting AG1 with carbonate buffer solution is 6 μ g/ to concentration ML, by the two according to volume ratio be 1:1 mixing, obtain being coated liquid.
Then will be coated liquid and add in polystyrene micropore plate, through adsorbing, wash, close, completing after drying to be coated.
Every hole adds 100 μ L sample/positive control/negative control and 50 μ L the first sample diluting liquids, after 37 DEG C hatch 30min Do not wash the every hole of plate and add 50 μ L the second sample diluting liquids, 37 DEG C hatch 30min after wash plate 6 times.
Add the AB2 of 200 μ L HRP labellings, the Avidin mixed solution of biotin labeled AG2 and HRP labelling, 37 DEG C Plate is washed 6 times after hatching 30min.
Every hole 100 μ L nitrite ion A liquid and 100 μ L nitrite ion B liquid, after 37 DEG C of lucifuge reaction 30min, every hole adds 50 μ L terminations Liquid, after 10min, surveys OD value at 450nm and 630nm dual wavelength.
Embodiment 2
Using phosphate buffered saline the first sample diluting liquid and the second sample diluting liquid, concrete composition is as follows.
The dithiothreitol, DTT of the first sample diluting liquid: 0.3wt%, the dodecyl sodium sulfate of 0.01wt%, 0.01wt% Guanidine hydrochloride.
The dodecyl-dimethyl amine second lactone of the second sample diluting liquid: 1wt% and the carbamide of 5mol/L.
Diluting AB1 with carbonate buffer solution is 3 μ g/mL to concentration, and diluting AG1 with carbonate buffer solution is 6 μ g/ to concentration ML, by the two according to volume ratio be 1:1 mixing, obtain being coated liquid.
Then will be coated liquid and add in polystyrene micropore plate, through adsorbing, wash, close, completing after drying to be coated.
Every hole adds 100 μ L sample/positive control/negative control and 50 μ L the first sample diluting liquids, after 37 DEG C hatch 30min Do not wash the every hole of plate and add 50 μ L the second sample diluting liquids, 37 DEG C hatch 30min after wash plate 6 times.
Add AB2, the mixed solution of biotin labeled AG2 and the Avidin of HRP labelling of 200 μ L HRP labellings, 37 Plate is washed 6 times after DEG C hatching 30min.
Every hole 100 μ L nitrite ion A liquid and 100 μ L nitrite ion B liquid, after 37 DEG C of lucifuge reaction 30min, every hole adds 50 μ L terminations Liquid, after 10min, surveys OD value at 450nm and 630nm dual wavelength.
Embodiment 3
Using phosphate buffered saline the first sample diluting liquid and the second sample diluting liquid, concrete composition is as follows.
The cysteine of the first sample diluting liquid: 1wt%, the dodecyl sodium sulfate of 0.08wt%, the hydrochloric acid of 0.1wt% Guanidine.
The dodecyl-dimethyl amine second lactone of the second sample diluting liquid: 5wt% and the Polyethylene Glycol octyl group benzene of 1mol/L Base ether.
Diluting AB1 with carbonate buffer solution is 3 μ g/mL to concentration, and diluting AG1 with carbonate buffer solution is 6 μ g/ to concentration ML, by the two according to volume ratio be 1:1 mixing, obtain being coated liquid.
Then will be coated liquid and add in polystyrene micropore plate, through adsorbing, wash, close, completing after drying to be coated.
Every hole adds 100 μ L sample/positive control/negative control and 50 μ L the first sample diluting liquids, after 37 DEG C hatch 30min Do not wash the every hole of plate and add 50 μ L the second sample diluting liquids, 37 DEG C hatch 30min after wash plate 6 times.
Add AB2 and the mixed solution of biotin labeled AG2 of 200 μ L HRP labellings, 37 DEG C hatch 30min after wash plate 6 times.
Every hole 100 μ L nitrite ion A liquid and 100 μ L nitrite ion B liquid, after 37 DEG C of lucifuge reaction 30min, every hole adds 50 μ L terminations Liquid, after 10min, surveys OD value at 450nm and 630nm dual wavelength.
According to embodiment 1~3, obtain table 1 below.
Table 1: the OD value under 450nm and 630nm dual wavelength in embodiment 1~3.
As can be seen from Table 1, embodiment 1~3 can realize the detection of HCV antigen-antibody, and in embodiment 1 first No matter the component ratio of sample diluting liquid and the second sample diluting liquid is detection HCV-cAg or HCV antibody effects is all Optimal.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art For, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the guarantor of the present invention Protect scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (9)

1. a hepatitis C virus antigen-antibody combined detection kit, is used for detecting in sample whether contain hepatitis C virus Poison or antibody of HCV, it is characterised in that including: the first HCV-Ab IgG cAg monoclonal antibody, a HCV restructuring inosculating antibody Former, the second HCV-Ab IgG cAg monoclonal antibody of the first sample diluting liquid, the second sample diluting liquid, the first enzyme labelling, the first part mark 2nd HCV restructuring chimeric antigen, the Ligands of second enzyme labelling, developer and the stop buffer of note;
Described first HCV-Ab IgG cAg monoclonal antibody, the second HCV-Ab IgG cAg monoclonal antibody of described first enzyme labelling, described first The most there is not cross reaction in the 2nd HCV restructuring chimeric antigen of HCV restructuring chimeric antigen and described first ligand-labeled, institute State the first part to be combined with described Ligands;
Described first sample diluting liquid includes reducing agent, 0.005%~0.1% of 0.05%~5% according to mass percentage concentration First surface activating agent and first denaturant of 0.005%~0.5%;
Described second sample diluting liquid includes second surface activating agent and the second denaturant;
In described second sample diluting liquid, the mass percentage concentration of described second surface activating agent is 0.5%~10%, described The concentration of two denaturants is 0.5mol/L~10mol/L.
Hepatitis C virus antigen-antibody combined detection kit the most as claimed in claim 1, it is characterised in that described reduction Agent is selected from least in dithiothreitol, DTT, three (2-carboxyethyl) phosphine, cysteine, beta-mercaptoethanol and reduced glutathion Kind;
In described first sample diluting liquid, the mass percentage concentration of described reducing agent is 0.3%~1%.
Hepatitis C virus antigen-antibody combined detection kit the most as claimed in claim 1, it is characterised in that described first Surfactant is selected from dodecyl-dimethyl amine second lactone, dodecyl alanine, sarcosyl, dodecane At least one in base sodium sulfonate and cetrimonium bromide;
In described first sample diluting liquid, the mass percentage concentration of described first surface activating agent is 0.01%~0.08%.
Hepatitis C virus antigen-antibody combined detection kit the most as claimed in claim 1, it is characterised in that described first At least one in guanidine hydrochloride, carbamide, Tween-20 and Triton X-100 of denaturant;
In described first sample diluting liquid, the mass percentage concentration of described first denaturant is 0.01%~0.1%.
Hepatitis C virus antigen-antibody combined detection kit the most as claimed in claim 1, it is characterised in that described second Surfactant is selected from dodecyl-dimethyl amine second lactone, dodecyl alanine, sarcosyl, dodecane At least one in base sodium sulfonate and cetrimonium bromide;
In described second sample diluting liquid, the mass percentage concentration of described second surface activating agent is 1%~5%.
Hepatitis C virus antigen-antibody combined detection kit the most as claimed in claim 1, it is characterised in that described second At least one in guanidine hydrochloride, carbamide, Tween-20 and Triton X-100 of denaturant;
In described second sample diluting liquid, the concentration of described second denaturant is 1mol/L~5mol/L.
Hepatitis C virus antigen-antibody combined detection kit the most as claimed in claim 1, it is characterised in that described first The solvent of sample diluting liquid is phosphate buffer or carbonate buffer solution, and the solvent of described second sample diluting liquid is phosphate Buffer or carbonate buffer solution.
Hepatitis C virus antigen-antibody combined detection kit the most as claimed in claim 1, it is characterised in that described sample The use ratio of product, described first sample diluting liquid and described second sample diluting liquid is 1~10:1~18:1~18.
Hepatitis C virus antigen-antibody combined detection kit the most as claimed in claim 1, it is characterised in that described first Enzyme is horseradish peroxidase or alkali phosphatase, and described second enzyme is horseradish peroxidase or alkali phosphatase, and described first joins Body is biotin or Avidin, and described Ligands is biotin or Avidin.
CN201610378119.1A 2016-05-31 2016-05-31 Hepatitis C virus antigen-antibody combined detection kit Pending CN106093402A (en)

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CN109917124A (en) * 2018-10-30 2019-06-21 郑州安图生物工程股份有限公司 A kind of hepatitis C virus antigen-antibody combined detection kit
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CN110927391A (en) * 2019-12-19 2020-03-27 新疆维吾尔自治区人民医院 A detection kit for diagnosing vascular inflammatory hypertension and its application
CN111579781A (en) * 2020-05-21 2020-08-25 深圳市宇诺生物技术有限公司 Hepatitis C virus antibody detection kit, preparation method and detection method
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CN117310164A (en) * 2023-11-27 2023-12-29 山东康华生物医疗科技股份有限公司 Hepatitis C virus core antigen detection test strip and kit
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