WO2019022288A1 - 바이오 감지 장치 - Google Patents
바이오 감지 장치 Download PDFInfo
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- WO2019022288A1 WO2019022288A1 PCT/KR2017/010139 KR2017010139W WO2019022288A1 WO 2019022288 A1 WO2019022288 A1 WO 2019022288A1 KR 2017010139 W KR2017010139 W KR 2017010139W WO 2019022288 A1 WO2019022288 A1 WO 2019022288A1
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- WIPO (PCT)
- Prior art keywords
- target analyte
- unit cell
- display unit
- sensing
- receptor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54373—Apparatus specially adapted for solid-phase testing involving physiochemical end-point determination, e.g. wave-guides, FETS, gratings
- G01N33/5438—Electrodes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
- G01N27/07—Construction of measuring vessels; Electrodes therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
- G01N27/3275—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction
- G01N27/3276—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction being a hybridisation with immobilised receptors
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- 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
Definitions
- the present invention relates to a bio-sensing device, and more particularly, to a bio-sensing device having an electrode structure.
- Test methods used for disease diagnosis are mainly based on coloration and fluorescence by enzyme reaction, but recent methods using immunoassay using an immune response between an antigen and an antibody have also been used.
- the optical measurement method combining the optical labeling with the catalytic reaction of the enzyme was used the most.
- the present invention has been made to solve the above problems and it is an object of the present invention to provide a bio-sensing device which can shorten analysis time and is relatively inexpensive.
- these problems are exemplary and do not limit the scope of the present invention.
- the bio-sensing device includes a source electrode and a drain electrode spaced apart from each other; A channel between the source electrode and the drain electrode, wherein the electrical resistance value can be changed by a target analyte; At least one unit cell having a sensing electrode and a gate electrode spaced apart from the sensing electrode; And a display unit that is electrically connected to the unit cell and displays time information that varies according to an electrical resistance value of the sensing film.
- the bio-sensing device may further include: a receiving portion capable of receiving a liquid biological sample containing the target analyte; A passage part through which a liquid biological sample can be transferred onto the sensing membrane in the receiving part; And a case for housing at least a part of the unit cell, the display unit, the accommodation unit, and the passage unit.
- the passage portion may include a nylon strip through which a liquid biological sample can be transferred by a capillary phenomenon.
- the liquid biological sample may include blood, saliva, or urine
- the target analyte may be a protein, a peptide, an abstamer, a nucleic acid, an oligosaccharide, an amino acid or a carbohydrate .
- the material of the sensing layer may include carbon nanotubes, graphene, silicon nanorods, molybdenum disulfide, or phosphorous. At least a portion of a region of the source electrode and the drain electrode, comb shape.
- the display unit may include a quantum dot display bar or an LED display bar whose color changes according to an electrical resistance value of a sensing film, one end of which is connected to a source electrode And the other end may be connected to the drain electrode.
- the at least one unit cell includes a first unit cell and a second unit cell spaced from each other, wherein the first unit cell senses a first receptor capable of binding with a first target analyte
- the second unit cell further comprises a second receptor on the sensing membrane capable of binding with a second target analyte different from the first target analyte,
- a first display unit electrically connected to the cell, and a second display unit electrically connected to the second unit cell.
- the unit cell and the display unit are configured to be connected in parallel to a power unit, and the sensing film and the receptor are combined with each other so that the electrical resistance value of the sensing film constituting the unit cell is increased by the combination of the target analyte and the receptor
- the magnitude of the current flowing through the display unit when the target analyte and the receptor are coupled may be greater than the magnitude of the current flowing through the display unit when the target analyte and the receptor are not coupled.
- the first target analyte is a target analyte containing a disease agent
- the second target analyte is a target analyte that does not contain a disease agent
- the first display unit may be configured to display time information for confirming the presence or absence of a disease factor based on the second display unit.
- the disease agent may include a cancer, AIDS, heart disease, mars, SARS, hormone, narcotic, nicotine, AI, anthrax or an inherited factor.
- FIG. 1 is a block diagram schematically illustrating a configuration of a bio-sensing device according to an embodiment of the present invention
- FIG. 2 is a schematic diagram illustrating a configuration of a unit cell, a display unit, and a power source unit in a bio-sensing device according to an embodiment of the present invention.
- FIG 3 is a cross-sectional view illustrating a unit cell in the bio-sensing device according to an embodiment of the present invention.
- FIG. 4 is a view illustrating a shape of a source electrode in a unit cell constituting the bio-sensing device according to an embodiment of the present invention.
- FIG. 1 is a schematic diagram illustrating a configuration of a bio-sensing device according to an embodiment of the present invention.
- FIG. 2 is a block diagram of a bio-sensing device according to an embodiment of the present invention.
- FIG. 3 is a cross-sectional view illustrating a unit cell 100 in a bio-sensing device according to an embodiment of the present invention. Referring to FIG.
- a bio-sensing device 1 includes a source electrode 140 and a drain electrode 150 spaced apart from each other; A channel between the source electrode 140 and the drain electrode 150, the sensing film 190 being capable of changing the electrical resistance value by the target analyte 300; At least one unit cell comprising a sensing electrode (190) and a gate electrode (110) spaced apart from the sensing electrode (190); And a display unit (30) electrically connected to the unit cell and displaying time information which varies according to an electrical resistance value of the sensing film (190).
- a power supply unit 40 such as a battery cell is connected to one end of a gate electrode 110 to apply a gate voltage.
- the power source of the battery cell may be, for example, 1.5 volts.
- One end of the power supply unit 40 is electrically connected to the source electrode 140 and the other end of the power supply unit 40 is electrically connected to the drain electrode 150.
- a passive element 200 such as a resistive element may be interposed between the electrodes 140 and 150 and the power supply 40.
- the source electrode 140, the sensing layer 190, the drain electrode 150, the passive element 200, and the display portion 30 may form a closed circuit.
- a shown in FIG. 1 may include region A shown in FIG.
- the circuit components shown in FIG. 2 may all be passivated except for the sensing film 190.
- the display unit 30 includes a light emitting diode display bar or a quantum dot display bar whose color changes according to an electrical resistance value of the sensing film 190.
- One end of the light emitting diode display bar is connected to the source electrode 140 And the other end may be connected to the drain electrode 150.
- the bio-sensing device 1 includes a receiving portion 20 capable of receiving a liquid biological sample containing the target analyte; A passage part (not shown) through which the liquid biological sample can be transferred onto the sensing membrane 190 in the accommodating part 20; And a case 10 housing the unit cell, the display unit 30, the accommodating unit 20, and at least a part of the passage unit.
- the unit cell may optionally further include a receptor 195 attached on the sensing membrane 190 and capable of binding with the target analyte 300.
- the receptor 195 may be attached on the sensing membrane 190 by a functional group.
- the receptor 195 may be any one or more selected from the group consisting of, for example, an enzyme substrate, a ligand, an amino acid, a peptide, an extramammer, a guanine, a protein, a nucleic acid, a lipid and a carbohydrate.
- the functional group may be at least one selected from the group consisting of, for example, an amine group, a carboxyl group, a thiol group and a lipid.
- the target analyte 300 can be, for example, a protein, an aptamer, a peptide, a nucleic acid, an oligosaccharide, an amino acid, a carbohydrate, a dissolved gas, a sulfur oxide gas, a nitric oxide gas, Na, K or its ion, Heavy metals, and environmentally harmful substances.
- the target analyte 300 can be contained in a liquid biological sample such as, for example, blood, saliva, or urine.
- the receiving part 20 for receiving the liquid biological sample may be fixedly arranged to be exposed on the upper surface of the case 10, or may be arranged to slide and move in a drawer form on the side of the case 10.
- the passage portion may include a passage portion through which a liquid biological sample can be transferred by, for example, a capillary phenomenon.
- the passage portion may include a nylon strip through which a liquid biological sample can be transferred by capillary phenomenon .
- the passage portion may be omitted.
- the sensing membrane 190 may be made of a material whose resistance may vary according to the receptor 195 and the target analyte 300 associated therewith.
- the material of the sensing layer 190 may include, for example, carbon nanotubes (CNT), silicon nanorods, graphene, molybdenum disulfide (MoS 2 ), or phosphorane.
- the sensing membrane 190 may be a material that can react with the target analyte 300 directly without interposing the receptor 195, .
- the sensing film 190 is a carbon nanotube (CNT)
- the device 100 shown in FIG. 3 can be understood as a CNT field effect transistor (CNT-FET).
- the gate electrode 110 is disposed below the source electrode 140, the drain electrode 150 and the sensing film 190 at a lower level. That is, the level at which the gate electrode 110 is located is lower than the level at which the source electrode 140, the drain electrode 150, and the sensing film 190 are located.
- a level is a term for distinguishing a vertical positional relationship in the cross section shown in FIG.
- the unit cell constituting the bio-sensing device 1 may further include an insulating member 130 interposed between the sensing film 190 and the gate electrode 110.
- the insulating member 130 may have the form of, for example, an insulating film or an insulating substrate.
- the surface of the insulating member 130 may be subjected to plasma treatment in order to improve adhesion between the insulating member 130 and the sensing film 190.
- a buffer layer (not shown) may be interposed between the insulating member 130 and the sensing layer 190 to improve adhesion.
- the unit cells disclosed in FIG. 3 may be disposed on a separate substrate and housed in the case 10. Alternatively, the unit cell disclosed in FIG. 3 may be mounted directly on the inner side of the case 10 without a separate substrate.
- FIG. 4 is a view illustrating a shape of a source electrode in a unit cell constituting the bio-sensing device according to an embodiment of the present invention.
- a region 140b of the source electrode 140 in contact with the sensing film 190 such as carbon nanotube, graphene, molybdenum disulfide, or phosphorous may have a comb-like shape .
- the bonding force or interconnection between the sensing film 190 and the source electrode 140 can be improved.
- the region of the drain electrode in contact with the sensing film, such as carbon nanotube or graphene has a comb-like shape to improve the bonding strength or interconnection between the drain electrode and the sensing film.
- the bio-sensing device 1 according to an embodiment of the present invention can be used as an inspection device used for disease diagnosis and can be used as a sensing device using an immune reaction between an antigen and an antibody depending on the type of a sensing membrane and a receptor .
- the bio-sensing device 1 according to an embodiment of the present invention can diagnose various cancers such as pancreatic cancer and breast cancer, AIDS diagnosis, heart disease diagnosis, mars, SARS, hormone, drug, nicotine, , And various genetic disease diagnostic devices.
- various cancers such as pancreatic cancer and breast cancer, AIDS diagnosis, heart disease diagnosis, mars, SARS, hormone, drug, nicotine, , And various genetic disease diagnostic devices.
- an exemplary explanation will be given.
- the bio-sensing device 1 may include at least one unit cell, for example, a first unit cell and a second unit cell spaced apart from each other. 3, the first unit cell further includes a first receptor 195 on the sensing layer 190 that can be coupled to a first target analyte, And a second receptor 195 capable of binding a second target analyte different from the first target analyte.
- the display unit 30 may include a first display unit 32 electrically connected to the first unit cell and a second display unit 34 electrically connected to the second unit cell.
- the unit cell and the display unit are connected in parallel to a power source unit.
- the electrical connection between the first unit cell and the first display unit 32 and the electrical connection between the second unit cell and the second display unit 34 can be understood as shown in FIG. 2 .
- the sensing film 190 and the receptor 195 may be configured such that the electrical resistance of the sensing film 190 constituting the unit cell is increased by the combination of the target analyte 300 and the receptor 195.
- the magnitude of the current flowing through the display unit 30 when the target analyte 300 and the receptor 195 are combined is determined based on the amount of current flowing through the display unit 30 when the target analyte 300 and the receptor 195 are not coupled, Which is larger than the magnitude of the current flowing in the transistor.
- a liquid sample of a healthy person does not contain a first target analyte but contains a second target analyte
- a liquid sample of a human having a disease agent contains both the first target analyte as well as the second target analyte.
- the first target analyte capable of selectively binding to the first receptor is selected from a target assay comprising a factor of cancer, AIDS, heart disease, mars, SARS, hormone, narcotic, nicotine, AI, Water and the second target analyte capable of selectively binding with the second receptor is a target analyte that does not contain the disease agent
- the second display portion 34 displays visual information in a standard state
- 1 display unit 32 may be configured to display time information for confirming the presence or absence of a disease factor on the basis of the second display unit 34.
- the first sensing film constituting the first unit cell described above does not have a coupling between the receptor and the target analyte
- the electric resistance value is relatively low and the current flowing to the first sensing film is relatively large while the magnitude of the current flowing to the first display unit connected in parallel with the first unit cell is relatively low.
- the second sensing film constituting the second unit cell has a relatively low electric resistance value and a relatively large current flowing to the second sensing film due to the absence of coupling between the receptor and the target analyte, And the amount of current flowing to the second display unit connected in parallel is relatively low. Therefore, both the first display unit and the second display unit may be turned off, or a display color corresponding to a low current may be expressed.
- a liquid sample of a healthy human who does not have a disease agent is provided to the receptacle 20 and power is supplied to the receptacle 20 of the bio-sensing device 1 described above,
- the resistance of the first sensing film constituting the first unit cell is relatively low and the current flowing to the first sensing film is relatively large while the electrical resistance of the first sensing cell constituting the first unit cell is relatively large,
- the magnitude of the current flowing to the first display portion is relatively low.
- the electric resistance value of the second sensing film constituting the second unit cell is relatively large and the current flowing to the second sensing film is relatively small,
- the magnitude of the current flowing to the second display unit connected in parallel with the unit cell is relatively large. Accordingly, the first display unit may be turned off, or a display color corresponding to a low current may be displayed, while a second display unit may be turned on or a display color corresponding to a high current may be displayed.
- the second receptor may be a second target analyte
- the electric resistance value of the second sensing film constituting the second unit cell is relatively large and the current flowing to the second sensing film is relatively low.
- the electric current passing through the second display cell, which is connected in parallel with the second unit cell The magnitude of the current flowing to the part is relatively large.
- the electric resistance value of the first sensing film constituting the first unit cell is relatively large, so that the magnitude of the current flowing to the first sensing film is relatively small, The magnitude of the current flowing to the first display unit connected in parallel with the first unit cell is relatively large. Therefore, both the first display unit and the second display unit are turned on or a display color corresponding to a high current is expressed.
- This bio-sensing device 1 can be understood as a self-check sensor cassette which does not require a separate reader. According to this, since the bio-sensing device 1 utilizes the electrical characteristics, There is no need for complicated procedures, the apparatus for analysis is relatively inexpensive, and analysis time is not long.
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Abstract
Description
Claims (10)
- 서로 이격되어 배치된 소스 전극 및 드레인 전극; 소스 전극 및 드레인 전극 사이의 채널로서, 표적 분석물(target analyte)에 의하여 전기저항값이 변할 수 있는, 감지막; 감지막과 이격되어 배치된 게이트 전극;을 구비하는 적어도 하나 이상의 단위셀; 및상기 단위셀에 전기적으로 연결되되, 감지막의 전기저항값에 따라 변동되는 시각정보를 표시하는, 디스플레이부;를 포함하는, 바이오 감지 장치.
- 제 1 항에 있어서,상기 표적 분석물을 함유하는 액상의 생체시료를 수용할 수 있는 수용부; 상기 수용부에서 감지막 상으로 액상의 생체시료가 전달될 수 있는 통로부; 상기 단위셀, 디스플레이부, 수용부 및 통로부의 적어도 일부를 하우징하는 케이스;를 더 포함하는, 바이오 감지 장치.
- 제 2 항에 있어서,상기 통로부는 모세관 현상으로 액상의 생체시료가 전달될 수 있는 나일론 스트립(nylon strip)을 구비하는, 바이오 감지 장치.
- 제 1 항에 있어서,상기 액상의 생체시료는 혈액(blood), 침(saliva) 또는 소변(urine)을 포함하고, 상기 표적 분석물은 단백질, 펩티드, 압타머, 핵산, 올리고당, 아미노산 또는 탄수화물을 포함하는, 바이오 감지 장치.
- 제 1 항에 있어서,상기 감지막의 재질은 탄소나노튜브, 그래핀, 이황화 몰리브덴 또는 포스포린을 포함하고, 상기 소스 전극과 드레인 전극 중에서 감지막과 접촉하는 영역의 적어도 일부는 콤(comb) 형상을 가지는, 바이오 감지 장치.
- 제 1 항에 있어서,상기 디스플레이부는, 감지막의 전기저항값에 따라 색상이 변동되는 양자점 디스플레이 바(quantum dot display bar) 혹은 LED 디스플레이 바(LED display bar)를 포함하되, 일단이 소스 전극에 연결되고 타단이 드레인 전극에 연결되는 것을 특징으로 하는, 바이오 감지 장치.
- 제 1 항 내지 제 6 항 중 어느 한 항에 있어서,상기 적어도 하나 이상의 단위셀은 서로 이격된 제 1 단위셀 및 제 2 단위셀을 포함하되, 상기 제 1 단위셀은 제 1 표적 분석물과 결합할 수 있는 제 1 리셉터를 감지막 상에 더 구비하며, 상기 제 2 단위셀은 상기 제 1 표적 분석물과 상이한 제 2 표적 분석물과 결합할 수 있는 제 2 리셉터를 감지막 상에 더 구비하며,상기 디스플레이부는 상기 제 1 단위셀과 전기적으로 연결되는 제 1 디스플레이부 및 상기 제 2 단위셀과 전기적으로 연결되는 제 2 디스플레이부를 구비하는,바이오 감지 장치.
- 제 7 항에 있어서,상기 단위셀과 상기 디스플레이부는 전원부에 병렬로 연결되도록 구성되며, 상기 감지막과 리셉터는 표적 분석물과 리셉터의 결합으로 상기 단위셀을 구성하는 감지막의 전기저항값이 높아지도록 구성됨으로써,상기 표적 분석물과 리셉터가 결합되는 경우 디스플레이부에 흐르는 전류의 크기는 상기 표적 분석물과 리셉터가 결합되지 않는 경우 디스플레이부에 흐르는 전류의 크기 보다 더 큰 것을 특징으로 하는, 바이오 감지 장치.
- 제 8 항에 있어서,상기 제 1 표적 분석물은 질병인자를 포함하는 표적 분석물이고, 상기 제 2 표적 분석물은 질병인자를 포함하지 않는 표적 분석물이며, 상기 제 2 디스플레이부는 표준 상태의 시각정보를 표시하고, 상기 제 1 디스플레이부는 제 2 디스플레이부를 기준으로 질병인자 유무 상태를 확인할 수 있는 시각정보를 표시하도록 구성된, 바이오 감지 장치.
- 제 9 항에 있어서,상기 질병인자는 암, AIDS, 심장병, 메르스, SARS, 호르몬, 마약, 니코틴, AI, 탄저병 또는 유전병의 인자를 포함하는, 바이오 감지 장치.
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CN116930298A (zh) * | 2023-09-14 | 2023-10-24 | 古镜科技(深圳)有限公司 | 用于检测hiv的电化学生物传感器及其制备方法和应用 |
CN116930298B (zh) * | 2023-09-14 | 2023-12-26 | 古镜科技(深圳)有限公司 | 用于检测hiv的电化学生物传感器及其制备方法和应用 |
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