WO2009154377A2 - 실시간 연속 검출장치 - Google Patents
실시간 연속 검출장치 Download PDFInfo
- Publication number
- WO2009154377A2 WO2009154377A2 PCT/KR2009/003174 KR2009003174W WO2009154377A2 WO 2009154377 A2 WO2009154377 A2 WO 2009154377A2 KR 2009003174 W KR2009003174 W KR 2009003174W WO 2009154377 A2 WO2009154377 A2 WO 2009154377A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- analyte
- sensor
- recognition component
- sample
- capture
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54366—Apparatus specially adapted for solid-phase testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
-
- 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
Definitions
- the present invention relates to a real-time continuous detection device, and more particularly to a real-time detection device including a sample inlet channel, a sample analysis site and a sample discharge channel, the sample analysis site is a reversible reactive capture recognition component and analyte in the sample It relates to a real-time continuous detection device of analyte, characterized in that it comprises a sensor for detecting a signal generated from the capture recognition component conjugate.
- the development trend of the immunoassay system showed the development of solid-phase immunoassay (eg, enzyme-linked immunosorbent immunoassays; ELISA) method using microtiter plates as immobilized homologs, which was applied to various diagnostic and analytical fields.
- solid-phase immunoassay eg, enzyme-linked immunosorbent immunoassays; ELISA
- ELISA enzyme-linked immunosorbent immunoassays
- BioDetect Test Card for field analysis was introduced.
- nano biosensor technology which combines nanotechnology and biotechnology, is emerging as a high-tech technology in the 21st century, and research is being actively conducted worldwide, including in Korea, to secure original technologies.
- the concept of nanosensors which is still at the beginning level, is the concept (Yi Cui et al., Science, Vol. 293, Page 1289-1292, 2001; Jong-in Hahm et al. Nano lett., Vol. 4, Page 51-54, 2004) and vibrating cantilevers Based immunoassays (Y Arntz et al., Nanotechnology, Vol. 14, Page 86-90, 2003) have been reported.
- Recognition components including antibodies, used in most existing analytical systems, are required to be washed to separate the conjugate after analyte-recognition component binding. At this time, in order to minimize the loss of the formed binder, it is necessary to use a phosphate that has a very low desorption rate. Therefore, the analyte once bound is not dissociated from the recognition component, so most of the sensors cannot be used continuously but only for one-time use.
- research on non-invasive sensing methods for glucose monitoring has been very active (Ronald T. Kurnik et al., Sensors and Actuators B: Chemical, Vol. 60, Page 19-26, 1999). There is an increasing demand for continuous measurement of relevant indicators, but technical problems do not meet them. However, if the analyte-recognition reaction can be reversibly operated, real-time continuous monitoring is possible for various diseases.
- biosensors that can be worn or implanted in the body could be developed in the future.
- biosensors that can be worn or implanted in the body could be developed in the future.
- it is possible to manage or monitor early diseases such as infectious diseases and adult diseases in high-risk patients (chronic patients, elderly people, etc.) with relatively high probability of disease by continuously measuring and diagnosing biological information.
- such analytical tool is expected to be an essential tool for future preventive medicine in the era of U-healthcare, which means a healthcare environment that provides 'health care services' based on the ubiquitous computing environment. Anthony PF Turner, Nature Biotechnology, Vol. 15, Page 421-421, 1997).
- U-healthcare When U-healthcare is realized, 'hospital / treatment center' responds after illness In addition to breaking away from the existing paradigm, chronic diseases and the elderly do not need long-term hospitalization.
- the present inventors have made intensive studies to overcome the problems of the prior arts. As a result, the present inventors have introduced reversible capture recognition components into the real-time detection apparatus of analytes and continuously recycle them to the concentrations of the analytes participating in reaction. Accordingly, it was confirmed that continuous measurement of the analyte may be possible by generating and measuring a signal in real time, thereby completing the present invention.
- a main object of the present invention is to provide a real-time continuous detection apparatus of analyte capable of continuously recycling the introduced reversible capture recognition component.
- Another object of the present invention to provide a real-time continuous detection method of the analyte using the real-time continuous detection device.
- Another object of the present invention is to provide a method for screening reversible capture recognition components used in the real-time continuous detection device.
- the present invention provides a real-time detection device including a sample inlet channel, a sample analysis site and a sample discharge channel, wherein the sample analysis site includes a reversible reactive capture recognition component (10) and an analysis in a sample.
- Substance (11)-Capture Recognition (10) Provides a real-time continuous detection device of the analyte, characterized in that it comprises a sensor for detecting a signal generated from the combination (see Fig. 1).
- the 'analyte' refers to a substance injected into the surface of the sensor for the purpose of detection using a sensor included in a sample analysis site
- the 'capturing recognition component' refers to a sensor chip of the sensor. It refers to a substance that is immobilized and can be specifically combined with an analyte.
- the capture recognition component is an antibody to the antigen or a receptor for the ligand, respectively.
- the capture recognition component is Each is its antigen or ligand.
- the reversible reaction capture recognition component is a recognition component (e.g., an antibody) that has both a fast reaction and desorption rate and a high affinity for desorption and adhesion rate, and captures a high adhesion and desorption rate constant value.
- Recognition components can be used to maintain high analytical sensitivity even when used continuously.
- 'affinity' can be expressed as the equilibrium adhesion constant, where the equilibrium adhesion constant (K A ) is defined as the adhesion rate constant (k a ) / desorption rate constant (kd).
- K A the equilibrium adhesion constant
- kd the adhesion rate constant
- 'high sensitivity real-time continuous detection' is possible by using an antibody having both a reversible reaction characteristic and a high affinity at the same time.
- the recognition component with an affinity of lxlO 6 L / mol or less is used only for the reversible reaction characteristics, the detection sensitivity of the detection device is very low at the ⁇ / L level. There is a problem that is difficult to apply. This is because the lower the affinity of the recognition component, the higher the concentration range of the analyte that can be measured.
- reversible recognition components eg antibodies
- the affinity will be lowered to below lxlO 6 L / mol. Therefore, in order to obtain a high affinity reversible recognition component as in the present invention, a special screening method should be introduced.
- the residual activity is first screened with a lower value than the concentration of the recognition component (see Example 1).
- a fixed sensor e.g., surface plasmon resonance sensor
- the reversible reactivity capture recognition component in order for the reversible reactivity capture recognition component to meet the object of the present invention, it is desirable to have a fast reaction kinetics and maintain a high affinity of the equilibrium adhesion constant of IX 10 7 L / mol or more, preferably IX 10 8 It is appropriate to maintain a high affinity between L / mol to IX 10 12 L / mol, more preferably between IX 10 9 L / mol and IX 10 12 L / nl.
- the reversible reaction capture component is preferably an adhesion rate constant 0 when reacted with the analyte in the sample is IX 10 5 L-mof'-sec "1 to IX 10 8 L-mol ⁇ -sec "1 and the desorption rate constant 0 have reversible reaction characteristics ranging from 1 ⁇ 1 ( 3 sec " 1 to lxKT 1 sec "1 and at the same time the equilibrium adhesion constant of the ratio of the two speed constants is 1 10 8 L / mol or more ( K A ) It is characterized by having.
- both attachment and desorption rate constants are high, so the response time of the detection device is fast, and real-time detection of the analyte is possible, and the equilibrium adhesion constant is also high. So high There is an advantage in providing measurement sensitivity. However, if it is out of range, especially when the desorption rate constant is lower, dissociation of the analyte associated with the capture recognition component is difficult, resulting in very long response time during continuous measurement or harsh conditions to accelerate black dissociation.
- monoclonal antibodies as typical recognition components for a particular analyte are generally hybridoma methods for immunizing an animal against analyte (Kohler. G et al., Nature, Vol. 256, Page 495-). 497, 1975), genetic recombination methods (HP Fell et al., PNAS, Vol. 86, Page 8507-8511, 1989), phage display methods (Nicholas A. Watkins et al., Vox Sanguinis, Vol. 78, Page 72-79, 2000), but a special process is required to screen for reversible antibodies.
- a washing process is used to remove excess components remaining after reaction.
- a screening system equipped with an unlabeled sensor such as a surface plasmon resonance sensor capable of tracking real-time reaction reactions during reaction and cleaning was used.
- the density of the conjugate formed and dissociated by antigen-antibody-antibody attachment and desorption reaction on the surface From the sensor Measured by time.
- a screening system based on a surface plasmon resonance sensor was used to select the reversible capture element.
- an appropriately diluted concentration of antibody solution is injected into the system, the signal increases with time by the binding reaction.
- washing that is, the change in the binder density at the antibody concentration '0' changes depending on the reversible characteristics of each antibody ( 2).
- irreversible antibodies Fig. 2, 20E7 that do not desorb during the washing process are absolutely preferred over reversible antibodies (1B5). This is because after washing, it is possible to generate a signal proportional to the analyte concentration from the antigen-antibody conjugate remaining in the solid phase.
- Antibodies that exhibit reversible reactivity may have a high desorption rate of the antigen-antibody conjugate, which may cause a decrease in the sensitivity of the assay due to a decrease in affinity (equilibrium adhesion constant, K A ).
- affinity affinity
- K A affinity
- high affinity reversible male antibodies generally require k a > IX 10 5 L-mor'-sec "1 , since antibodies with conditions of K A > 1X10 8 L-mol " 1 are generally required to maintain high sensitivity.
- ⁇ > 1X10— 3 sec Can be defined as an antibody with "1 character.
- the antibody is serially diluted to a standard concentration and reacted with an antigen immobilized on a surface plasmon resonance sensor to determine the lowest antibody concentration that can detect a signal.
- This is possible (see Figure 4).
- the reversible antibody 1B5 reacts with the antigen even in the concentration range below the pg / mL concentration, and this result shows a very high affinity compared with the case of the conventional irreversible antibody.
- the reversible antibodies used in the results of Figure 4 can be seen that the reaction in the equilibrium different from the fixed antigen in a relatively wide concentration range, it is very suitable for the production of biosensors.
- the reversible reaction capture recognition component (10) is a biological metabolite, protein, hormone, nucleic acid, cell, food test substance, environmentally harmful substance or defense, which is an analyte 11 in a sample Antibodies, receptors, nucleic acids, enzymes, aptamers, peptides, or molecular prints that can specifically bind CBRs It is characterized in that the film.
- the senor is a non-labeled sensor 12 (see FIG. 1A) that directly detects a signal generated from an analyte (11) -capture recognition component (10) combination, or
- An analyte (11) -capture recognition component (10) is characterized in that it is a label sensor (15) which detects via a label (14) which generates a signal in proportion to the binder density (Fig. 1B).
- the unlabeled sensor measures as a signal the mass on the sensor that changes in proportion to the analyte-capture recognition component combination, the resistance of the vibrator, the surface distortion due to the charge distribution change, and energy transfer.
- SPR Surface plasmon resonance
- Cantilever sensor for detecting charge distribution (Hans-Jur gen Butt, Journal of Colloid and Interface Science, Vol.
- the label sensor further reacts the detection recognition component labeled with a label to measure a signal from the labeling substance in order to generate a signal in proportion to the analyte-capture recognition component combination.
- the 'detection recognition component' means that the labeled material is physically or chemically bound and specifically reacts with the analyte. Means a possible substance.
- the spot on the analyte molecule to which the detection recognition component reacts is different from the site where the capture recognition component reacts, so the two components may simultaneously react with the analyte.
- Phosphors, light emitters, enzymes, metal particles, plastic particles, magnetic particles, etc. are used as the labeling materials for generating signals.
- Sensors for detecting the fluorescence, luminescence, color development, electrochemistry, and magnetic fields generated therefrom are used as marker sensors.
- the analyte contained in the sample is continuously introduced into the system through the fluid channel to react with the capture recognition component, and in the case of using the label sensor, the analyte in the sample is labeled. After reacting with the combined detection recognition component in advance, it is continuously introduced into the system through the fluid channel and reacts with the capture recognition component.
- the sample analysis site is divided by a semi-permeable membrane 16 which can selectively permeate only the analyte 11 in the sample so that the capture recognition component 10 is fixed. It is characterized by forming a recognition reaction cell 17 on the surface side.
- the recognition reaction cell 17 is a detection recognition component 13 combined with a labeling substance 14 of a size that cannot pass through the semi-permeable membrane 16 in the recognition reaction cell 17 when the labeling sensor 15 is used. It is characterized in that the trapped and recycled.
- the detection recognition component 13 in the recognition reaction cell 17 is also characterized by having a reversible reaction characteristic in order to be continuously recycled together with the capture recognition component 10.
- the sample analysis site is a sensor surface fixed capture element
- the cells can be divided into semi-permeable membranes to form a recognition reaction cell (Fig. 1, d).
- the analyte contained in the sample is small in size and diffused into the cell through the membrane, but the impurities in the sample are large in size. Can be filtered to prevent contamination of the sensor surface.
- the installation of such a reaction cell is particularly applicable to the case of a labeling analysis system (Fig.
- the present invention provides a method for real-time continuous detection of analyte using the real-time continuous detection device comprising the following steps. a) injecting a sample comprising an analyte into a sample analysis site through the sample inlet channel;
- the signal generated from the analyte-capturing constituent conjugate in step c) is directly detected using a non-labeled sensor, Alternatively, the signal is measured by a label sensor via a label that generates a signal in proportion to the analyte-capture recognition component conjugate density.
- the analyte included in the sample is introduced into the sample analysis site continuously through the sample inflow channel, and it is characterized in that it reacts with the capture recognition component.
- the analyte in the sample reacts with the detection recognition component to which the label is bound in advance, and then continuously enters the sample analysis site through the sample inflow channel and reacts with the capture recognition component.
- Continuous flow exposure type Continuous flow exposure type
- the analyte in the sample is continuously introduced into the sample analysis site through the sample inlet channel and then reacted with the detection recognition component and the capture recognition component combined with the labeling substance in the recognition reaction cell. It is characterized by.
- the detection recognition component since the detection recognition component is supplied after reacting with the analyte in advance in the case of the continuous flow exposure type, the detection recognition component has a high irreversible reaction characteristic with high binding stability, or in the case of the recognition reaction cell type, the detection recognition component is also continuous. It is characterized by having a reversible reaction characteristic to be recycled into.
- the present invention in the case of using the recognition type Sal sensor, the energy transfer between the adjacent fluorescent substance (label material) and the fluorescent energy receptor is interrupted by the reaction of the capture recognition component and the analyte, and thus the fluorescence signal is generated.
- the labeling agent enzymes known to be inhibited when the analyte immobilized on the enzyme molecule (labelling substance) are combined with the labeling substance can be used to perform the recognition reaction in the liquid phase without immobilizing the capture recognition component on the sensor. Characterized in that it can.
- the present invention provides a method for screening reversible capture recognition components used in the real-time continuous detection device comprising the following steps.
- step f) selecting a capture recognition component whose detection signal in step e) is lower than the detection signal in step c).
- the senor may be a non-labeled sensor selected from a surface plasmon resonance sensor, a cantilever sensor, an optical waveguide sensor, an optical interference sensor, or a nanosensor.
- the capture recognition component in the step a), is continuously injected by diluting it in a carrier solution, and in step f), the capture recognition in which the signal increased with time decreases. It is characterized by the choice of ingredients.
- the capture recognition component is repeatedly injected with the washing solution, and in step f), the signal increases with time and returns to the initial baseline. And selecting a capture recognition component in which the signal pattern is repeated.
- the real-time continuous detection method of the analyte using the same and the method for screening the reversible reaction capture recognition component used therein may have the following advantages.
- This new concept of detection (or diagnostic) enables real-time monitoring of disease or symptoms, thus overcoming the limitations of disposable performance that can be discarded once used in nearly all existing immunoassay systems. Continuous monitoring of chronic diseases or high risk patients in the human body is possible. Furthermore In the current diagnosis system, it takes a long time to obtain a diagnosis result, and when there is a need to analyze patient condition detection data in the laboratory, there is a large difference in time between the time of examination and the result of the diagnosis, which makes it difficult to accurately diagnose or timely treat the disease. Many problems can be solved.
- the real-time continuous detection device developed in the present invention and the detection method using the same as a new preventive medicine method of early diagnosis concept satisfy the change of the medical paradigm shifting from the hospital to the demand site, and high risk group such as chronic disease patients and the elderly It enables the development and practical use of continuous diagnostic equipment that allows patient monitoring at all times.
- the decrease in fertility rate is accelerating entry into an aging society, and the westernization of dietary patterns has led to the spread of various chronic adult diseases, which helps to lead a healthy life through early diagnosis.
- the continuous diagnosis method can be used as a basic source technology for measuring and diagnosing biometric information in real time by embedding the diagnosis system in a mobile phone, a hospital, a house, or wearing it in the body, especially in the coming U-healthcare era.
- the real-time continuous detection device of the present invention and the detection method using the same, it can be used to analyze the metabolites, proteins, hormones, nucleic acids, cells, food test targets, environmental harmful substances or defense and defense measurement materials, etc.
- the product group by sector is summarized as an example.
- high-risk (chronic, elderly, critically ill) continuous diagnosis system products diabetes patient infection continuous diagnosis system products, cardiovascular recurrence continuous monitoring system products, cancer treatment patients recurrence continuous monitoring system products, and toilet seat health Monitoring system products.
- it can be applied to artificial organ control such as artificial pancreas control system products.
- Environmental industries include river water, coastal and marine pollution continuous monitoring system products.
- As the biological and food industry it can be applied to the bioprocess continuous monitoring system products and the food production process continuous monitoring system products.
- a change in analyte concentration can be measured in real time by continuously reusing a predetermined amount of reversible reaction capture recognition components.
- the real-time continuous detection device of the present invention can be used to detect or analyze biological metabolites, proteins, hormones, nucleic acids, cells, food test substances, environmentally harmful substances or defense chemicals and defense materials, and thus, medical, public health, and defense. Applicable to the environment, food, veterinary and biotechnology industries.
- FIG. 1 is a continuous flow exposure type unlabeled sensor for continuously measuring the concentration of analyte by continuously recycling the capture recognition component 10 in a sample analysis site according to the present invention
- B continuous flow exposure type indicator sensor
- C recognition cell type unlabeled sensors
- D a schematic diagram showing a recognition reaction cell type label sensor.
- Figure 2 is an illustration of the capture recognition component according to the present invention to analyze the adhesion and desorption reaction characteristics for the antibody (1B5) showing the reversible reactivity produced from the mouse hybridoma clone and the typical irreversible antibody (20E7) To the sensor surface It is a graph measured by a surface plasmon resonance sensor system in which an antigen, an analyte (alpha 2-macroglobulin is used as a model), and a comparison of a rate constant and an equilibrium equilibrium constant determined therefrom.
- FIG. 3 is a graph comparing cyclic repeat measurement results for testing the feasibility of continuous measurement according to the difference in reaction properties of two antibodies 1B5 and 20E7 using the sensor system of FIG. 2.
- Figure 4 is a result obtained by reacting the antigens immobilized on the sensor according to the concentration dilution by serial dilution to test the affinity for the antigen of the reversible anticoagulant antibody 1B5 using the sensor system of FIG.
- FIG. 5 shows that 1B5 antibody, which is a reversible reactive antibody, can be used for medical clinical diagnosis, and then immobilized 1B5 antibody on the sensor surface and reacted with the fixed antibody according to the increase in concentration. This is a comparison of the results obtained using (A) phosphate buffer solution and (B) human serum.
- FIG. 6 is a signal amplification obtained by additionally introducing a polymer between the gold colloid particles having a diameter of 30 nm as the labeling material 14 and the irreversible antibody 20E7 as the detection recognition component 13 to improve the analytical sensitivity of the sensor system of FIG. 5. The result is.
- FIG. 8 illustrates the continuous plasmon resonance sensor system in which antibody 1B5 is immobilized on the sensor surface to illustrate the recycling of reversible anticoagulant antibody in continuous measurement mode. 2 repetitions (A) Concentration response obtained from sensor for standard changes and (b) Standard curve plotted with graph.
- one of the key elements of sensor technology is the real-time continuous detection system (or real-time continuous detection system).
- the sensor types can be largely classified into unlabeled and labeled sensors.
- unlabeled sensors such as plasmon resonance sensors, cantilever sensors, or optical waveguide sensors.
- a method of measuring surface plasmon resonance which is a charge density wavelength generated by light at a metal and dielectric medium interface, is typical. Since the surface plasmon resonance interacts in close proximity with the metal surface, the change of optical properties due to the recognition reaction in this region affects the incident angle of light causing the surface plasmon resonance (J. Homo la et al. , Sens. Actuators B, Vol. 54, Page 3-15, 1999). Therefore, the change in the incident angle of light that causes surface plasmon resonance by the reaction between the analyte and the recognition component on the sensor surface is measured as a signal.
- the detection sensitivity component (13) combined with the labeling substance (14) was further introduced to increase the change in mass of the reaction reaction conjugate between the analyte (11) and the capture recognition component (10).
- a signal amplification method can be used.
- the irreversible antibody 20E7 was selected as the detection recognition component (13) to physically bind to the gold colloid particles having a diameter of 30 nm, and the binder was previously reacted with the standard solution of analyte and injected into the sensor. It was measured (see Example 7).
- irreversible antibody 20E7 can react simultaneously with reversible antibody 1B5 for the analyte.
- the signal amplification method was able to detect at least 0.001 ng / mL of the analyte, thereby improving the analysis sensitivity by about 100 times (FIG. 6).
- the pattern of change in concentration may vary depending on the type of analyte or onset of symptoms. Continuous mode '(see Example 10). Similar to the response to exponential changes, the sensor showed similar analytical performance for arithmetic analyte concentration changes (FIG. 9). Furthermore, because of their sensitive and rapid response to small concentration changes, reversible antibody-based biosensors are expected to be widely applicable to the measurement of analytes that require very accurate analysis in the future.
- alpha 2-macroglo as an analyte for illustrating continuous diagnosis.
- Blin was selected and a continuous diagnostic technique was illustrated by producing a reversible antibody specific for this substance.
- Macroglobulin can be used as a biomarker for the treatment and recurrence of three different diseases, especially nephrotic syndrome, early diagnosis of Alzheimer's disease, and clinical diagnosis of inflammatory reactions and complications after transplantation.
- Nephrotic syndrome is a renal disease in which only 90% of children develop a disease in the urine, and protein is lost due to glomerular abnormalities in the kidney (Daniel A. Blaustein et al., Primary Care Update for OB / GYNS, Vol. 2, Page 204-206, 1995). Patients often develop swelling in their bodies or legs, and depending on the situation, they may develop kidney sclerosis, kidney failure, and cancer. The disease is diagnosed by a complete blood count (CBC), liver function tests, renal function tests, blood protein tests such as mark gloglobulin, and urine tests. When diagnosed with nephrotic syndrome, immunosuppressive agents (prednisone) or steroids are administered for 1-6 months for treatment.
- prednisone immunosuppressive agents
- steroids are administered for 1-6 months for treatment.
- macroglobulin as a biomarker is the presence of Alzheimer's disease in about 60 to 70 people, and 50% of people over 85 years of age.
- the London King's College research team Tests show two types of protein, complement factors, from patients with Alzheimer's disease
- Acute and chronic human disease including the diseases illustrated above, generally progresses relatively slowly, either in hours or days, so the response time of sensors measuring disease marker biomarkers is usually required in minutes. This means that if the sensor response time is 10 times faster than the disease progression time, the disease progression will be a biomarker continuous diagnosis process. Since it is the governing rate step, the macroglobulin concentration response time of the sensor shown in FIGS. 8 and 9 (about 15 minutes; based on 95% of the final response) satisfies the continuous detection condition. The quicker sensor response time (e.g., seconds) has no effect on the performance of the analysis during continuous diagnostics, and it is the effect of shortening the measurement time for the sample taken in the case of a disposable sensor (e.g. blood glucose sensor) with a different concept. It just provides
- phosphor is most often used as a signal source, and the capture recognition component (10) is fixed on the solid surface (I and D in FIG. 1) or liquid phase reaction is performed in the recognition reaction cell (17).
- a fluorescent material which is a signal source, is absorbed when a certain energy receptor is present in close proximity and thus does not emit light (Shaw et al., J. Clin). Pathol, Vol. 30, Page 526-531, 1977).
- recognition reactions such as antigen-antibody attachment can be designed to regulate energy transfer between the phosphor and the energy receptor, and the fluorescence signal can be detected using photodetectors (photodiodes, charge-coupled devices, photomultiplier tubes, etc.). do.
- photodetectors photodiodes, charge-coupled devices, photomultiplier tubes, etc.
- an enzyme may be used as a labeling substance.
- the activity is inhibited when the capture recognition component (10) immobilized on the surface of the sensor is used (A and D in FIG. 1) or when the antibody is attached to the enzyme molecule.
- liquid reaction can be performed in the recognition reaction cell (17). These enzymes are known to inhibit the activity of enzymes by binding to analytes (ie, antigens) and reacting with antibodies for immunoassays (Se-Hwan Paek et al., Biotechnology and bioengeering, Vol. 56, Page 221-231, 1997).
- Signals from enzymes can vary from absorbance sensors (spectrophotometers), light-receiving sensors (photodiodes, charge-coupled devices, photomult ipl ier tubes, etc.), and electrochemical sensors (electrodes), depending on the chosen enzyme and substrate. Can be measured by means.
- magnetic particles may be used as a label, and using the capture recognition component (10) fixed to the surface of the sensor (b) of FIG. 1), magnetic field measurement of the reaction between the analyte and the recognition component may be performed.
- Magnetic field measurement sensors are typical of GMR / TMR and Hall devices. They are low power consumption, small size, light and integrated.
- the concentration response time of the continuous diagnostic system exemplified is 10 minutes based on 95% of the final response. It is not applicable to the measurement of analyte whose concentration changes in seconds. Can be. It is particularly suitable for analytical subjects that require an alarm if the concentration exceeds a specified upper limit. Applicable areas include continuous diagnosis and disease control for diseases and conditions, continuous detection of biological terror agents, continuous monitoring of environmental pollution, and continuous monitoring of biological processes.
- Mouse monoclonal antibodies (20E7, 3D1; irreversible reaction) and alpha 2-macroglobulin (a tetramacroulin) were supplied from Abifront Tier (Korea).
- Bovine serum albumin, sodium acetate, sodium phosphate, sodium chloride, glycine, human serum (AB plasma), casein, gold nanoparticle (30 nm), anti Mouse goat antibody -horseradish peroxidase (HRP) polymer, and 3,3 ⁇ 5,5 ⁇ -tetramethylbenzidine (TMB) were purchased from Sigma (USA).
- the total IgG antibody quantitative kit (mouse IgG core ELISA) was supplied from Coma Biotech (Korea). All other reagents were used for analytical grade.
- hybridoma cells producing monoclonal antibodies is standard. It was carried out according to the law. Specifically, 6-week-old female BALB / c mice were immunized by injecting alpha 2-macroglobulin with an immunogen into the abdominal cavity and boosted three times at two-week intervals. On the third day after the third boost, the spleen cells obtained from the sacrifice of mice were subjected to cell fusion with a myeloma cell line (Sp2 / 0-Agl4), from which hybridoma cells were selected.
- a myeloma cell line Sp2 / 0-Agl4
- a total of 384 clones were prepared for the hybridoma cells, and the antibody-containing culture solution produced from each clone was used for the immunoreactivity test and determination of the amount of IgG antibody.
- clone cultures were placed in 96-microplate wells fixed with alpha 2-macroglobulin (2.5 yg / mL) diluted with 10 mM phosphate buffer solution (including 140 mM NaCl; pH 7.4). I moved each one back. After washing, the anti-mouse goat antibody-HRP polymer (1 / 5,000) diluted with 0.5% casein containing 10 mM phosphate solution (casein-PBS) was reacted.
- BIACORE CM5 purchased as a surface plasmon resonance sensor chip, activated the chip surface using 100 mM NHS and 400 mM EDC according to the protocol provided by the manufacturer.
- BIACORE 2000 The operation of the surface plasmon resonance sensor system (BIACORE 2000; GE healthcare, Sweden) followed the BIACORE 2000 usage protocol provided by the manufacturer and selected phosphate buffered black human serum as the running buffer according to the test purpose.
- BIACORE CM5 was purchased as a sensor chip to be installed in the sensor system, and serum albumin was attached to the fluid channel 1 as a control and the ligand was chemically fixed to the fluid channel 2.
- the pure signal value was obtained by subtracting the noise value of channel 1 from the signal unit (RU) of channel 2 by maintaining the flow direction from channel 1 to channel 2. .
- the temperature in the reaction cell was maintained at 25 ° C. in all examples.
- Example 3 Reversible Reflex Antibody Screening Using Surface Plasmon Resonance Measurement System
- bovine serum albumin was immobilized at 100 pg / mL in fluid channel 1 as described in Example 2 and A sensor chip was prepared in which alpha 2-macroglobulinol was fixed at a concentration of 100 ug / mL in a fluid channel. This After mounting the sensor chip prepared in the surface plasmon resonance measurement system, the equilibrium state was maintained by injecting 10 mM complete phosphate solution at a rate of 5 ⁇ using a sample carrier solution.
- Example 1 seven hybridoma clones selected by antibody reactivity test and total IgG antibody amount determination were appropriately diluted with 10 mM complete phosphate solution (PBS, pH 7.4).
- 10 mM complete phosphate solution PBS, pH 7.4
- 35 IJL of each antibody sample was injected into the sensor chip mounted in the sensor system for 420 seconds to induce adhesion reaction, and then injected for 210 seconds with phosphate buffer solution. Induced.
- 15 ⁇ L of a 10 mM glycine complete solution pH 1.5 was continuously injected for 180 seconds to regenerate the sensor surface.
- Adhesion and desorption reaction patterns were analyzed using an editing program (BIAevaluation 2.0) provided by the manufacturer and the adhesion rate constant a), desorption rate constant and equilibrium adhesion constant (K A ) were calculated.
- the table below shows the adhesion rate constants (k a ), desorption rate constants (k d ) and equilibrium adhesion constants (K A ) of the seven hybridoma clones tested.
- the repetition reaction pattern of the reversible reaction 1B5 antibody was obtained and compared with the pattern of the irreversible reaction 20E7.
- Antibody solution 100 ng / mL 1B5 or 20 ng / mL 20E7
- 10 mM complete phosphate solution (17.5 uLol) was injected into the sensor chip for 210 seconds at 5 uL / min flow rate to induce adhesion reaction.
- Desorption board for 110 seconds by injecting complete layer solution Induced response. Repeated six times for each antibody under these same attachment / desorption reaction conditions.
- the 20E7 antibody which was expected to exhibit irreversible reaction characteristics, showed a relatively slow but sustained reaction response for a specified time after the antibody supply, and the desorption reaction was not completed when the phosphate buffer solution was supplied. Therefore, antigen-antibody reaction conjugates gradually accumulate in response to repeated attachment / detachment reactions, resulting in a stepwise increase in signal.
- Example 5 Determination of the Lower Concentration of Reversible Reactive Antibodies
- Example 3 the response of the surface plasmon resonance sensor to the concentration change of the reversible reaction 1B5 antibody was measured.
- 1B5 antibody was ligated in concentrations ranging from 0.5 pg / mL to 0.5 ug / mL using 10 mM phosphate buffer. 17.5 of each diluted antibody solution was injected for 210 seconds at a flow rate of 5 ⁇ m to induce an adhesion reaction, and then a phosphate buffer solution was injected for 110 seconds to induce a desorption reaction. Under the same conditions, the solution was analyzed in the order of the high concentration solution from the low concentration antibody solution, and then in the reverse order, and subjected to one cycle test. Circulation After the hum was completed, the sensor surface was regenerated in the same manner as in Example 4.
- the signal of the surface plasmon resonance sensor within the range of antibody concentration used was increased proportionally when the concentration of the antibody solution was increased in steps and decreased proportionally when the concentration was decreased in steps.
- the antibody concentration range of pg / mL or less appeared to react with the antigen immobilized on the sensor chip, which is inferior in terms of affinity when compared to the irreversible antibody used in the existing immunoassay. Therefore, an immunoassay system equipped with an antibody having reaction properties such as 1B5 is expected to show excellent analyte sensitivity, and since the antibody exhibits reaction reaction from pg concentration unit to unit, it is widely used in future production of immune sensor. The measuring range is expected.
- Example 6 Reversible Anticoagulant Antibody-Based Unlabeled Immune Sensor System
- a continuous flow exposure type unlabeled sensor (A) of FIG. 1 for the measurement of alpha 2-macroglobulin using a reversible anticoagulant antibody BIACORE having a surface plasmon resonance sensor system (BIAC0RE 2000) and a reversible reactive antibody immobilized CM5 sensor chip was used.
- the right serum albumin was fixed at a concentration of 100 ⁇ g / mL in the fluid channel 1
- a sensor chip was prepared by fixing the reversible semicoagulant 1B5 antibody at a concentration of 10 ug / mL in the fluid channel 2.
- macroglobulin an analyte that specifically reacts with the antibody immobilized on the sensor surface
- 10 mM phosphate buffer solution to prepare a standard sample in the concentration range of 0-10 ng / mL.
- Each standard sample 150 uL was injected into the sensor chip mounted in the sensor system for 900 seconds at a flow rate of 10 ⁇ L / min to induce an adhesion reaction, followed by injection of a complete phosphate solution for 120 seconds to induce desorption reaction.
- the sensor surface was regenerated as in Example 4, The experiment was repeated under the same conditions described above using human serum as a diluent and sample carrier instead of the phosphate buffer solution.
- Gold colloid (diameter: about 30 nm) suspensions were prepared by standard methods using sodium citrate as reducing agent (LJL Dykman, AA Lyakhov, VA Bogatyrev, SY Chchyogolev. Colloid, 60, 700, 1998). Specifically, 1,000 mL of tertiary deionized water was added to the glass flask, and 20 mL of 1% gold chloride solution (tetrachloroauric acid) was added thereto. It was boiled and the solution using a hot plate to aid banung, 0.2 ⁇ ⁇ ⁇ the filter was added to the 1% sodium citrate solution 40 mL was filtered using as a reducing agent to make the gold colloid. Sodium citrate Immediately after addition the solution turned from pale dark to red. After heating for 10 minutes, the reaction was stopped and slowly deformed at room temperature and stored for long periods.
- sodium citrate sodium citrate
- the prepared gold nanoparticle suspension (0.5 m carbonate complete solution (pH 9.6; 1 uL) was added to 1 mU and adjusted to pH 8.0.
- 20E7 (see FIG. 2), an irreversible anticoagulant antibody, was prepared in 10 mM complete phosphate solution.
- PB does not contain NaCl
- PB did not contain NaCl
- the concentration response of the analysis system employing the signal amplification step is an embodiment Compared to the concentration response of the unlabeled sensor system obtained in Fig. 6, it showed a significantly increased form, and in fact, the sensitivity of analysis was about 100 times improved from 0.1 ng / mL level (see Fig. 5b) to 0.001 ng / niL level. .
- the signal amplification method exemplified in the present invention it is possible to measure analytes present in very low concentrations in a sample. Therefore, the continuous detection method using reversible antibodies can be widely applied to various analyte measurements.
- the microfluidic flow rate was reduced to 1/10 of the previous experimental conditions to obtain the concentration response of the analysis system.
- the same sensor chip as in Example 6 was used and the experiment was also performed under the same conditions except for the reduction of the flow rate.
- Human serum was used as the sample carrier solution and the standard sample diluent solution, and the flow rate was maintained at 1 ⁇ .
- a standard sample was prepared in the concentration range of 0-100 ng / mL, and a sample (15 U L) was injected into the sensor chip to induce adhesion reaction for 900 seconds, followed by injection of phosphate buffering solution to induce desorption reaction for 420 seconds. It was. Standard samples were analyzed in the form of circulation from low to high concentration and then back to low concentration. Operation of the analysis system and data editing were performed in the same manner as in Example 4, and after the analysis was completed, the sensor surface was regenerated as shown.
- the reset mode in which the sample carrier solution (not including the analyte) is injected between each sample analysis is used to measure the reaction of the reversible reaction antibody in the present embodiment.
- Sample continuous analysis mode was used to illustrate.
- the sensor chip was prepared in Example 6, and the macroglobulin was diluted with human serum to prepare a standard sample ranging from 0.01 to 10,000 ng / mL.
- a standard sample was sequentially injected into the sensor chip at a flow rate of 1 ⁇ , and the concentration response from the sensor was continuously measured for two iterations of the cycle change in which the analyte concentration increased and decreased tenfold stepwise every 900 seconds. Obtained.
- sample injection was performed using the sample carrier solution supply passage rather than through the inlet.
- a predetermined analyte concentrate or diluent was added to the previous residual sample solution to prevent boiling or air from entering the standard sample, and then adjusted to the standard concentration of the next sample. All.
- the spilled samples were collected by a preparative device, and each fraction was analyzed by the sandwich enzyme immunoassay using the microwell plate as an immobilization parent to confirm the analyte concentration of the standard sample.
- the assay was performed by adding 3D1 monoclonal antibody (1 yg / mL; 100 yL) irreversible to alpha 2-macroglobulin diluted with 10 mM complete phosphate solution (including 140 mM NaCl; P H 7.4). Fixed. After washing, 200 iL of 0. casein-containing 10 mM complete phosphate solution (casein-PBS) was added to block the unwell fixed remaining surface.
- the concentration of each standard sample calculated and set in advance for continuous measurement was collected, and there was a difference within 10% between the calculated value and the analysis result. It was used for graphing.
- the sensor response to an increase or decrease in the concentration of analyte in a standard sample injected into the sensor at a given microfluidic flow rate (1 mL / min) is equilibrium within 15 minutes. Reached and exhibited high reproducibility in two replicate cycles (A of FIG. 8; tested at a concentration range of 0.01-100 ng / mL).
- the concentration change pattern (exponential black or arithmetic) of concentration at the time of onset or symptom expression may be different so that the sensor responds to the arithmetic concentration change that increases or decreases by 2 times or less. Measurements were made in continuous mode as in 9. In this experiment, an optimal condition was ultimately considered in diagnosing pediatric kidney cancer in which alpha 2-macroglobulin selected as a model analyte can be used as a biomarker.
- the standard sample was prepared by diluting the analyte with casein -PBS to minimize the amount of serum samples, and the concentration range was determined to be in the range of 1-20 ng / mL to maintain the optimal analytical performance. Each standard sample was injected into the sensor chip at 1800 second intervals and the flow rate was adjusted to 1 ⁇ .
- the sensor's response to the continuous concentration change at the arithmetic level showed rapid response time and continuous measurement reproducibility as well as for the exponential change.
- the reversible reaction antibody-based biosensor which is sensitive and rapid to small concentration changes, requires very accurate analysis in the future. It is expected to be widely applicable to the measurement of analytes.
- the clinically effective concentration range of alpha 2-macroglobulin ranges from 3 to 10 mg / mL, which requires 1.44 mL per day (based on l iiL / min injection rate) when serum samples are used for continuous measurements.
- a change in analyte concentration can be measured in real time by continuously recycling a predetermined amount of reversible reaction components.
- recyclable antibodies that react rapidly and reversibly according to the concentration of analyte can significantly simplify components and manufacturing methods compared to conventional disposable diagnostic chips.
- real-time monitoring of the disease or condition is possible, thereby enabling continuous monitoring of patients with chronic diseases or high risk.
- artificial organ controllers, continuous detection systems for biological terror agents, continuous detection systems for common infectious pathogens, continuous monitoring system for environmental pollutants, continuous monitoring system products for biological processes, continuous monitoring system products for food production processes, etc. Can be applied.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Hematology (AREA)
- Urology & Nephrology (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Microbiology (AREA)
- Cell Biology (AREA)
- Biotechnology (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011514486A JP2011524982A (ja) | 2008-06-18 | 2009-06-12 | リアルタイム連続検出装置 |
US12/999,979 US20110097740A1 (en) | 2008-06-18 | 2009-06-12 | Real-time continuous detection device |
CN2009801232997A CN102105798A (zh) | 2008-06-18 | 2009-06-12 | 实时连续检测装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080057532A KR100958198B1 (ko) | 2008-06-18 | 2008-06-18 | 실시간 연속 검출장치 |
KR10-2008-0057532 | 2008-06-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009154377A2 true WO2009154377A2 (ko) | 2009-12-23 |
WO2009154377A3 WO2009154377A3 (ko) | 2010-03-18 |
Family
ID=41434538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2009/003174 WO2009154377A2 (ko) | 2008-06-18 | 2009-06-12 | 실시간 연속 검출장치 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110097740A1 (ko) |
JP (1) | JP2011524982A (ko) |
KR (1) | KR100958198B1 (ko) |
CN (1) | CN102105798A (ko) |
WO (1) | WO2009154377A2 (ko) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102735832A (zh) * | 2011-03-30 | 2012-10-17 | 株式会社东芝 | 使用光波导的测定系统 |
EP2563512A1 (fr) * | 2010-04-28 | 2013-03-06 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Procédé et dispositif pour détecter et quantifier un analyte avec recyclage des réactifs |
CN111912599A (zh) * | 2020-08-31 | 2020-11-10 | 交通运输部水运科学研究所 | 一种模拟试验生态损害影响的露天循环水池 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101145668B1 (ko) * | 2010-11-22 | 2012-05-24 | 전자부품연구원 | 연속 혈당 측정 시스템 |
KR101342755B1 (ko) | 2011-10-26 | 2013-12-19 | 고려대학교 산학협력단 | 미성숙 항체, 이를 이용한 연속 검출장치 및 실시간 연속 검출 방법 |
EP2910947B1 (en) * | 2012-10-18 | 2019-02-13 | Konica Minolta, Inc. | Assay method using surface plasmon-field enhanced fluorescence spectroscopy |
WO2014142559A1 (ko) * | 2013-03-13 | 2014-09-18 | 고려대학교 산학협력단 | 혈중 희소 세포의 검출 및 계수 장치와 방법 |
KR101568573B1 (ko) | 2013-03-13 | 2015-11-20 | 고려대학교 산학협력단 | 혈중 희소 세포의 검출 및 계수 장치와 방법 |
JP2014215282A (ja) * | 2013-04-30 | 2014-11-17 | 日本精工株式会社 | 標的物質検出装置及び標的物質の検出方法 |
KR101482624B1 (ko) * | 2013-05-16 | 2015-01-19 | 한국과학기술연구원 | 수계 내 표적 유해물질 연속 모니터링 장치 및 방법 |
DE102013011304A1 (de) | 2013-07-02 | 2015-01-22 | Technische Universität Dresden | Verfahren und Anordnung zur Erfassung von Bindungsereignissen von Molekülen |
KR101865428B1 (ko) * | 2013-12-20 | 2018-06-07 | 연세대학교 산학협력단 | 국소표면 플라즈몬 공명을 이용한 생체분자 검출 방법 |
KR101629848B1 (ko) * | 2014-11-18 | 2016-06-14 | 가천대학교 산학협력단 | 바이오센서의 센서 헤드의 재생방법 |
JP6796857B2 (ja) * | 2017-02-27 | 2020-12-09 | 国立研究開発法人物質・材料研究機構 | 化学センサによる試料識別方法及び装置 |
KR102151146B1 (ko) | 2018-07-27 | 2020-09-02 | 상명대학교 천안산학협력단 | 단일벽 탄소나노튜브 기반 바이오센서의 재사용 방법 |
WO2020146002A1 (en) * | 2019-01-11 | 2020-07-16 | University Of Cincinnati | Membrane-coupled continuous sensing systems |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20050058154A (ko) * | 2003-12-11 | 2005-06-16 | 한국생명공학연구원 | 효소침전반응과 결합된 spr을 이용한 바이오칩 및바이오센서 측정방법 |
KR100673835B1 (ko) * | 2005-08-16 | 2007-01-24 | 성균관대학교산학협력단 | Spr을 이용하여 단백질을 정량하는 방법 |
KR100737689B1 (ko) * | 2006-08-23 | 2007-07-09 | 성균관대학교산학협력단 | 표면 플라즈몬 공명 센서의 신호 증폭 방법 |
KR100775334B1 (ko) * | 2006-11-08 | 2007-11-09 | 성균관대학교산학협력단 | 경쟁적 면역 반응 적용 흐름식 표면 플라즈몬 공명바이오센서를 이용한 실시간 병원성 미생물 검출 방법 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9212416D0 (en) * | 1992-06-11 | 1992-07-22 | Medical Res Council | Reversible binding substances |
US5846727A (en) * | 1996-06-06 | 1998-12-08 | Board Of Supervisors Of Louisiana State University And Agricultural & Mechanical College | Microsystem for rapid DNA sequencing |
IL151972A0 (en) * | 2000-03-27 | 2003-04-10 | Univ California | Ligands directed to the non-secretory component, non-stalk region of pigr and methods of use thereof |
CA2314398A1 (en) * | 2000-08-10 | 2002-02-10 | Edward Shipwash | Microarrays and microsystems for amino acid analysis and protein sequencing |
US7771657B2 (en) * | 2002-06-19 | 2010-08-10 | Biosensor Applications Sweden Ab | System, device and method for detection of several individual analytes in a solution, and a disposable flow cell for use therein |
EP1550871B1 (en) * | 2002-09-19 | 2009-08-12 | Hamamatsu Photonics K. K. | Fluorescence analysis method with the use of fluorescent antibody |
US20060003339A1 (en) * | 2004-06-30 | 2006-01-05 | Fuernkranz Hans A | Two-hybrid system |
JP2006078210A (ja) * | 2004-09-07 | 2006-03-23 | Fuji Photo Film Co Ltd | 被験物質のスクリーニング方法 |
JP4936901B2 (ja) * | 2005-01-07 | 2012-05-23 | ユニバーサル・バイオ・リサーチ株式会社 | 担体封入チップ、担体処理装置、および担体処理方法 |
US20070116607A1 (en) * | 2005-11-23 | 2007-05-24 | Pharmacom Microlelectronics, Inc. | Microsystems that integrate three-dimensional microarray and multi-layer microfluidics for combinatorial detection of bioagent at single molecule level |
ITMI20060477A1 (it) * | 2006-03-16 | 2007-09-17 | Univ Degli Studi Milano | Metodo di misurazione di interazioni molecolari mediante rilevazione di luce riflessa da superfici |
EP1845374A1 (en) * | 2006-04-14 | 2007-10-17 | Koninklijke Philips Electronics N.V. | Form inhibitor membrane for a flow-through cell |
KR101362002B1 (ko) * | 2011-12-12 | 2014-02-11 | 엘지디스플레이 주식회사 | 유기발광 표시장치 |
-
2008
- 2008-06-18 KR KR1020080057532A patent/KR100958198B1/ko active IP Right Grant
-
2009
- 2009-06-12 CN CN2009801232997A patent/CN102105798A/zh active Pending
- 2009-06-12 JP JP2011514486A patent/JP2011524982A/ja active Pending
- 2009-06-12 WO PCT/KR2009/003174 patent/WO2009154377A2/ko active Application Filing
- 2009-06-12 US US12/999,979 patent/US20110097740A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20050058154A (ko) * | 2003-12-11 | 2005-06-16 | 한국생명공학연구원 | 효소침전반응과 결합된 spr을 이용한 바이오칩 및바이오센서 측정방법 |
KR100673835B1 (ko) * | 2005-08-16 | 2007-01-24 | 성균관대학교산학협력단 | Spr을 이용하여 단백질을 정량하는 방법 |
KR100737689B1 (ko) * | 2006-08-23 | 2007-07-09 | 성균관대학교산학협력단 | 표면 플라즈몬 공명 센서의 신호 증폭 방법 |
KR100775334B1 (ko) * | 2006-11-08 | 2007-11-09 | 성균관대학교산학협력단 | 경쟁적 면역 반응 적용 흐름식 표면 플라즈몬 공명바이오센서를 이용한 실시간 병원성 미생물 검출 방법 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2563512A1 (fr) * | 2010-04-28 | 2013-03-06 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Procédé et dispositif pour détecter et quantifier un analyte avec recyclage des réactifs |
CN102735832A (zh) * | 2011-03-30 | 2012-10-17 | 株式会社东芝 | 使用光波导的测定系统 |
CN102735832B (zh) * | 2011-03-30 | 2015-02-18 | 株式会社东芝 | 使用光波导的测定系统 |
US9274104B2 (en) | 2011-03-30 | 2016-03-01 | Kabushiki Kaisha Toshiba | Measuring system using optical waveguide, measuring device, measuring method, optical waveguide type sensor chip, and magnetic fine particle |
CN111912599A (zh) * | 2020-08-31 | 2020-11-10 | 交通运输部水运科学研究所 | 一种模拟试验生态损害影响的露天循环水池 |
Also Published As
Publication number | Publication date |
---|---|
KR20090131588A (ko) | 2009-12-29 |
KR100958198B1 (ko) | 2010-05-14 |
CN102105798A (zh) | 2011-06-22 |
JP2011524982A (ja) | 2011-09-08 |
WO2009154377A3 (ko) | 2010-03-18 |
US20110097740A1 (en) | 2011-04-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100958198B1 (ko) | 실시간 연속 검출장치 | |
Fu et al. | Flow-through multianalyte chemiluminescent immunosensing system with designed substrate zone-resolved technique for sequential detection of tumor markers | |
JP4546462B2 (ja) | ポイントオブケア検査用メンブレンストリップバイオセンサーシステム | |
Kim et al. | Development of indirect-competitive quartz crystal microbalance immunosensor for C-reactive protein | |
Yang et al. | Automated support-resolution strategy for a one-way chemiluminescent multiplex immunoassay | |
Wang et al. | A paper-based device with an adjustable time controller for the rapid determination of tumor biomarkers | |
Gupta et al. | Multiplexed electrochemical immunosensor for label-free detection of cardiac markers using a carbon nanofiber array chip | |
US8445212B2 (en) | Microfluidic structure for detecting biomolecule and microfluidic device comprising the same | |
JP5097557B2 (ja) | 免疫測定装置及び方法 | |
CN113156119A (zh) | 一种采用血管紧张素转化酶ii(ace2)检测冠状病毒的方法 | |
Nie et al. | A highly sensitive capillary-based immunosensor by combining with peroxidase nanocomplex-mediated signal amplification for detection of procalcitonin in human serum | |
Karunakaran et al. | Immunosensors | |
Nie et al. | Immunoassays using optical-fiber sensor with all-directional chemiluminescent collection | |
TWI486571B (zh) | 感測方法 | |
JP5728005B2 (ja) | 磁気センサ装置、このような装置の作動方法及びサンプル | |
Vairaperumal et al. | Optical nanobiosensor-based point-of-care testing for cardiovascular disease biomarkers | |
Zhang et al. | Universal and high-speed zeptomolar protein serum assay with unprecedented sensitivity | |
Wan et al. | Amplification-free ratiometric electrochemical aptasensor for point-of-care detection of therapeutic monoclonal antibodies | |
Yang et al. | Automated chemiluminescent dual-analyte immunoassay based on resolved immunosensing channels | |
Zhang et al. | Development of a portable multiplexed instrument for multi-proteins detection in human urine using surface plasmon resonance | |
Kimura et al. | Strategies to simplify operation procedures for applying labeled antibody-based immunosensors to point-of-care testing | |
Che et al. | Peptide-based antifouling aptasensor for cardiac troponin I detection by surface plasmon resonance applied in medium sized Myocardial Infarction | |
Ming-Qing et al. | Research progress of C-reactive protein analysis | |
KR100673835B1 (ko) | Spr을 이용하여 단백질을 정량하는 방법 | |
Scholten et al. | A mixed alkanethiol based immunosensor for surface plasmon field-enhanced fluorescence spectroscopy in serum |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980123299.7 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09766802 Country of ref document: EP Kind code of ref document: A2 |
|
ENP | Entry into the national phase |
Ref document number: 2011514486 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12999979 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 09766802 Country of ref document: EP Kind code of ref document: A2 |