WO2005085801A1 - 近接場光を用いた生体分子の相互作用の検出方法および検出装置 - Google Patents
近接場光を用いた生体分子の相互作用の検出方法および検出装置 Download PDFInfo
- Publication number
- WO2005085801A1 WO2005085801A1 PCT/JP2005/003962 JP2005003962W WO2005085801A1 WO 2005085801 A1 WO2005085801 A1 WO 2005085801A1 JP 2005003962 W JP2005003962 W JP 2005003962W WO 2005085801 A1 WO2005085801 A1 WO 2005085801A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- biomolecule
- field light
- substrate
- specimen
- interaction
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01Q—SCANNING-PROBE TECHNIQUES OR APPARATUS; APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING PROBE MICROSCOPY [SPM]
- G01Q30/00—Auxiliary means serving to assist or improve the scanning probe techniques or apparatus, e.g. display or data processing devices
- G01Q30/08—Means for establishing or regulating a desired environmental condition within a sample chamber
- G01Q30/12—Fluid environment
- G01Q30/14—Liquid environment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
-
- 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
-
- 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
- G01N33/566—Immunoassay; Biospecific binding assay; Materials therefor using specific carrier or receptor proteins as ligand binding reagents where possible specific carrier or receptor proteins are classified with their target compounds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01Q—SCANNING-PROBE TECHNIQUES OR APPARATUS; APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING PROBE MICROSCOPY [SPM]
- G01Q60/00—Particular types of SPM [Scanning Probe Microscopy] or microscopes; Essential components thereof
- G01Q60/18—SNOM [Scanning Near-Field Optical Microscopy] or apparatus therefor, e.g. SNOM probes
- G01Q60/20—Fluorescence
Definitions
- the present invention relates to a method and an apparatus for detecting an interaction between a biomolecule and a specimen in a liquid.
- the above-described method using evanescent light is a method in which light is totally reflected from the back side of a substrate to which a biomolecule is fixed to generate evanescent light on the surface of the substrate. Stay at a distance of a few lOOnm. For this reason, it is necessary to fix the biomolecules flat within this several 100 nm, but it is not easy to fix them with precise control. Further, when a liquid such as water is present on the upper surface of the substrate, it is difficult to totally reflect light, and it is difficult to generate evanescent light.
- the above-described gene analysis method using the SNOM probe is used for analyzing a gene map for a DNA chain exhibiting strong interaction as described above, and is weak due to a protein or the like. It does not detect interactions.
- An object of the present invention is to provide a method and an apparatus capable of detecting a weak interaction between a biomolecule and a specimen.
- the present invention is a method for detecting the interaction between a biomolecule immobilized on a substrate and a fluorescently-labeled sample using near-field light. Contacting a specimen with a specimen, irradiating the surface of the biomolecule in a liquid with near-field light using a SNOM probe, and detecting fluorescence excited by the near-field light. It is the said method.
- the present invention provides the above method, wherein the biomolecule is a protein and Z or a sugar chain. It is.
- the present invention is the above method, wherein the specimen is a protein and Z or a sugar chain.
- the present invention is the above method, characterized by using a substrate on which one or more kinds of biomolecules are immobilized.
- the present invention is an apparatus for detecting the interaction between a biomolecule immobilized on a substrate and a fluorescently labeled specimen using near-field light, wherein the specimen comes into contact with the specimen in a liquid.
- the above device comprising: irradiation means for irradiating near-field light to a surface of a biomolecule; and detection means for detecting fluorescence excited by the near-field light.
- the present invention is the above device, wherein the biomolecule is a protein and Z or a sugar chain.
- the present invention is the above device, wherein the specimen is a protein and Z or a sugar chain.
- the present invention is the above device, characterized by using a substrate on which one or more kinds of biomolecules are immobilized.
- the present invention it is possible to detect a weak interaction between a biomolecule and a specimen. Further, according to the present invention, it is possible to detect the interaction of a plurality of biomolecules with a specimen on one substrate.
- FIG. 1 is a schematic diagram schematically showing a detection method and a detection device of the present invention.
- FIG. 2 is a diagram showing an example of a method and a device for detecting fluorescence used in the present invention.
- FIG. 3 is an example of a substrate on which two or more types of biomolecules are immobilized.
- FIG. 1 is a diagram schematically showing a detection method and a detection device of the present invention.
- a biomolecule 5 is immobilized on a substrate 1.
- the substrate 1 is placed in a liquid 8 containing a specimen 10 labeled with a fluorescent label 12.
- the biomolecule 5 comes into contact with the specimen 10.
- near-field light 30 is generated at the tip of the SNOM probe 20, and the substrate surface (biomolecule surface) is run by the SNOM probe 20 in the AFM mode (Fig. L (a)).
- the SNOM probe reaches the place where the sample 10 and the biomolecule 5 interact, the fluorescent label 12 is excited by the near-field light 30 and the fluorescence 40 is generated (FIG. L (b)).
- the SNOM probe is used in the vicinity of the present invention. Irradiation means for irradiating the in-field light is configured.
- the means for detecting the generated fluorescence is not particularly limited as long as it can detect the fluorescence.
- the fluorescence can be detected. Can be used.
- a means for detecting fluorescence using a SNOM probe may be used. That is, in FIG. 2, the laser light 52 generated by the laser generator 50 is incident on the SNOM probe 20 via the dichroic mirror 55, and near-field light is generated at the tip portion thereof, not shown. The near-field light is applied to the fluorescent label 12 that has labeled the specimen 10, and fluorescence 40 is generated. Part of the generated fluorescence 40 reaches the optical sensor 60 via the SNOM probe 20 and the dichroic mirror 55, and the fluorescence is detected.
- the detection device of the present invention may further include a liquid storage means for performing each processing in the liquid.
- the biomolecule used in the present invention is not particularly limited as long as it interacts with a specimen, and examples thereof include a protein and a sugar chain.
- the sample used in the present invention is not particularly limited as long as it interacts with a biomolecule, and examples thereof include sugar chains and proteins.
- specific examples of the combination of a biomolecule and a specimen include, for example, lectin and sugar chains. It is known that the binding between these lectins and sugar chains is very weak, and such weak interactions can be detected by the present invention.
- the fluorescent label on the specimen used in the present invention is not particularly limited as long as it generates fluorescence, and examples thereof include GFP (Green Fluorescence Protein) and canolesome indicator protein reagent (cameleon). Fluorescent protein.
- the substrate used in the present invention is not particularly limited as long as it can immobilize biomolecules.
- nitrocellulose membranes, PVDE membranes, metals, glasses, and the like can be used. I can make it.
- fluorescence can be detected from the back surface of the substrate.
- the method for immobilizing the biomolecule on the substrate is not particularly limited as long as the biomolecule can be immobilized on the substrate.
- a method of performing an amino bond a method of performing physical adsorption, and a method of performing a thiol bond And a method of causing an antigen-antibody reaction.
- the liquid used in the present invention is not particularly limited as long as it can detect the interaction between the biomolecule and the sample, and examples thereof include a buffer solution and the like.
- a buffer solution and the like examples thereof include a buffer solution and the like.
- the method of contacting a biomolecule with a specimen according to the present invention is not particularly limited as long as the biomolecule and the specimen can be contacted.
- a method in which a biomolecule is immobilized in a liquid containing the specimen is used.
- a method of immersing the substrate can be used.
- the SNOM probe used in the present invention is not particularly limited as long as it can generate near-field light.
- near-field light can be generated within a radius of approximately several lOnm, and the interaction with the analyte can be detected only in a small area near the target biomolecule. It becomes.
- the AFM mode is preferred as the method for scanning the SNOM probe. According to the AFM mode, even when the spot of the biomolecule fixed to the substrate is not flat, the SNOM probe and the biomolecule or the specimen can be kept at the same distance according to the unevenness, and the specimen can be accurately separated from the specimen. It is possible to detect an interaction with a biomolecule.
- Examples of the substrate on which the biomolecules used in the present invention are immobilized include, in addition to those on which one type of biomolecule is immobilized, those on which two or more types of biomolecules are immobilized, as shown in FIG. Can be That is, in FIG. 3, the plurality of biomolecules 5 are of different types. Fixed to board 1. By immersing the substrate 1 in a liquid containing a specimen and scanning the SNOM probe, it is possible to detect the interaction of the biomolecule in each spot with the specimen. This makes it possible to detect the interaction of one specimen with a plurality of types of biological molecules by using one substrate.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Urology & Nephrology (AREA)
- Molecular Biology (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Biotechnology (AREA)
- Cell Biology (AREA)
- Microbiology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004064932A JP2005257274A (ja) | 2004-03-09 | 2004-03-09 | 近接場光を用いた生体分子の相互作用の検出方法および検出装置 |
JP2004-064932 | 2004-03-09 |
Publications (1)
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WO2005085801A1 true WO2005085801A1 (ja) | 2005-09-15 |
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PCT/JP2005/003962 WO2005085801A1 (ja) | 2004-03-09 | 2005-03-08 | 近接場光を用いた生体分子の相互作用の検出方法および検出装置 |
Country Status (2)
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JP (1) | JP2005257274A (ja) |
WO (1) | WO2005085801A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103608677A (zh) * | 2011-04-20 | 2014-02-26 | 韩国科学技术院 | 在单分子水平上在细胞环境中分析蛋白-蛋白相互作用的方法和装置 |
Families Citing this family (4)
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---|---|---|---|---|
KR100808762B1 (ko) | 2006-07-06 | 2008-02-29 | 충북대학교 산학협력단 | 나노 바이오칩 검사 방법 |
JP2009067780A (ja) | 2007-08-22 | 2009-04-02 | Chisso Corp | クロロナフタレン部位を有する液晶化合物、液晶組成物および光素子 |
JP2009098010A (ja) * | 2007-10-17 | 2009-05-07 | Fujifilm Corp | 近接場光学顕微鏡用カンチレバー、それを用いたプラズモン増強蛍光顕微鏡及び蛍光検出方法 |
KR101285363B1 (ko) * | 2011-04-20 | 2013-07-11 | 한국과학기술원 | 세포 환경 내에서의 단일 분자 수준의 단백질-단백질 상호작용 분석 장치 |
Citations (2)
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JPH09269325A (ja) * | 1996-03-30 | 1997-10-14 | Mochida Pharmaceut Co Ltd | 凸状領域を用いた分析方法 |
JP2001165840A (ja) * | 1999-12-07 | 2001-06-22 | Seiko Instruments Inc | 遺伝子解析方法及び装置 |
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2004
- 2004-03-09 JP JP2004064932A patent/JP2005257274A/ja active Pending
-
2005
- 2005-03-08 WO PCT/JP2005/003962 patent/WO2005085801A1/ja active Application Filing
Patent Citations (2)
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JPH09269325A (ja) * | 1996-03-30 | 1997-10-14 | Mochida Pharmaceut Co Ltd | 凸状領域を用いた分析方法 |
JP2001165840A (ja) * | 1999-12-07 | 2001-06-22 | Seiko Instruments Inc | 遺伝子解析方法及び装置 |
Non-Patent Citations (1)
Title |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103608677A (zh) * | 2011-04-20 | 2014-02-26 | 韩国科学技术院 | 在单分子水平上在细胞环境中分析蛋白-蛋白相互作用的方法和装置 |
US20140113309A1 (en) * | 2011-04-20 | 2014-04-24 | Korea Advanced Institute Of Science And Technology | Method and apparatus for analyzing protein-protein interaction on single-molecule level within the cellular environment |
US20140113307A1 (en) * | 2011-04-20 | 2014-04-24 | Korea Advanced Institute Of Science And Technology | Method for analyzing protein-protein interaction on single-molecule level in cell environment, and method for measuring density of protein activated in cytosol |
US9377462B2 (en) | 2011-04-20 | 2016-06-28 | Korea Advanced Institute Of Science And Technology | Method for analyzing protein-protein interaction on single-molecule level in cell environment, and method for measuring density of protein activated in cytosol |
US9423400B2 (en) | 2011-04-20 | 2016-08-23 | Korea Advanced Institute Of Science And Technology | Method and apparatus for analyzing protein-protein interaction on single-molecule level within the cellular environment |
US20160266139A1 (en) * | 2011-04-20 | 2016-09-15 | Korea Advanced Institute Of Science And Technology | Method for analyzing protein-protein interaction on single-molecule level in cell environment, and method for measuring density of protein activated in cytosol |
US9733255B2 (en) | 2011-04-20 | 2017-08-15 | Korea Advanced Institute Of Science And Technology | Method and apparatus for analyzing protein-protein interaction on single-molecule level within the cellular environment |
US9739785B2 (en) * | 2011-04-20 | 2017-08-22 | Korea Advanced Institute Of Science And Technology | Method for analyzing protein-protein interaction on single-molecule level in cell environment, and method for measuring density of protein activated in cytosol |
US9964544B2 (en) | 2011-04-20 | 2018-05-08 | Korea Advanced Institute Of Science And Technology | Method and apparatus for analyzing protein-protein interaction on single-molecule level within the cellular environment |
US10401367B2 (en) | 2011-04-20 | 2019-09-03 | Korea Advanced Institute Of Science And Technology | Method and apparatus for analyzing protein-protein interaction on single molecule level within the cellular environment |
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