WO2003087826A1 - Procede d'analyse de molecule et analyseur de molecule - Google Patents
Procede d'analyse de molecule et analyseur de molecule Download PDFInfo
- Publication number
- WO2003087826A1 WO2003087826A1 PCT/JP2003/003943 JP0303943W WO03087826A1 WO 2003087826 A1 WO2003087826 A1 WO 2003087826A1 JP 0303943 W JP0303943 W JP 0303943W WO 03087826 A1 WO03087826 A1 WO 03087826A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- molecular
- transfer
- molecule
- detection surface
- detection
- 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
- G01N33/54373—Apparatus specially adapted for solid-phase testing involving physiochemical end-point determination, e.g. wave-guides, FETS, gratings
-
- 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
- G01N33/554—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals the carrier being a biological cell or cell fragment, e.g. bacteria, yeast cells
Definitions
- the present invention relates to analytical techniques useful in the fields of biochemistry, molecular biology, and the like. Specifically, molecules that are particularly useful for analyzing the sequence and structure of “target molecules” that interact with “detection molecules” immobilized on the detection surface of the sensor chip of the biosensor device in advance. Related to analysis technology.
- biosensor devices in which a sensor chip having a detection surface portion is incorporated, have become widespread.
- This biosensor device is currently used to analyze amino acid, peptide, protein, nucleotide, low molecular weight compounds, lipids, and other intermolecular interactions such as antigen-antibody reactions, hybridization, enzyme response reactions, and the like. It is a useful tool for kinetic analysis.
- the detection surface portion of the sensor chip may be a substance having a functional group (for example, a carboxyl group, an amino group, an aldehyde group, a thiol group, etc.) suitable for immobilizing a molecule for detection, or streptavidin. It has been solid-phased in advance.
- a functional group for example, a carboxyl group, an amino group, an aldehyde group, a thiol group, etc.
- the detection molecule immobilized by binding to the detection surface shows a specific interaction if the target molecule is present in the sample solution sent on the detection surface, and binds the target molecule. Will be captured.
- the biosensor detects the binding and dissociation states of this interaction in real time using principles such as the surface plasmon resonance principle and the crystal oscillator principle.
- a method has been recently devised in which the target molecule captured by the detection molecule is collected in an extremely small volume of a predetermined solution, and further detailed molecular analysis (for example, mass spectrometry) is performed. ing.
- a sample solution including target molecules
- mass spectrometry a method has been recently devised in which the target molecule captured by the detection molecule is collected in an extremely small volume of a predetermined solution, and further detailed molecular analysis (for example, mass spectrometry) is performed. ing.
- a sample solution including target molecules
- mass spectrometry mass spectrometry
- the present invention provides a technique for transferring and collecting target molecules captured on a detection surface of a sensor chip to a membrane, and provides a molecular analysis method and a molecular analysis apparatus using this technique. Aim. Disclosure of the invention
- the present application describes a molecular transfer procedure for transferring a target molecule, which has interacted with a detection molecule bound to a detection surface of a biosensor device for analyzing an interaction between molecules, to a solid phase.
- a molecular analysis method devised to include at least.
- the detection surface portion is removed from the sensor unit and transferred to a predetermined solid phase.
- transcription broadly means a procedure for transferring or copying a molecule captured on a detection surface to a solid phase which is a transcript, and is not interpreted narrowly.
- molecular transfer procedure one procedure selected from electrical transfer, pressure transfer, and suction transfer can be adopted, and these procedures may be appropriately combined.
- the “detection surface” refers to, for example, a process provided on a sensor chip disposed in a sensor unit for detecting an interaction based on the plasmon resonance principle or the crystal oscillator principle and capable of performing an intermolecular interaction. Surface area.
- a sensor 03 03943 In carrying out the method according to the present invention, a sensor 03 03943
- the sensor section be configured so that the sensor chip can be attached and detached as easily as possible.
- the molecular analysis method according to the present invention has a technical idea which is a drastic change from the conventional very general idea of recovering a molecule captured on a detection surface into a liquid phase, and detects a chip of a biosensor device.
- the theme is to provide a completely novel molecular recovery technology that recovers target molecules captured on the surface by transferring them to a solid phase, especially a membrane.
- Solid phase includes solids and semi-solids that have at least the property of receiving and retaining target molecules captured on the detection surface.
- the “membrane body” is a liquid-permeable porous body and includes, for example, a polyvinyl alcohol (PVA) membrane, a nylon membrane, a nitrocellulose membrane, and a membrane filter.
- PVA polyvinyl alcohol
- the reason that the membrane is suitable as the solid phase to be transferred is that the detection surface is easily adhered due to the flexibility and the liquid permeability is provided, so that post-treatment such as washing can be suitably performed.
- employing the molecular transcription procedure of the present invention has the advantage that multiple target molecules can be transcribed, recovered and analyzed separately and simultaneously without mixing, without mixing.
- the recovery of target molecules captured by each detection molecule on the detection surface is performed using a partitioned flow path system. And it had to be done sequentially and under independent work, which was very time-consuming and time-consuming.
- the target molecule may be dissociated or denatured during the long-term recovery operation.
- the molecular transfer procedure of the present invention a plurality of types of target molecules captured on the detection surface can be transcribed and recovered at a time, so that the recovery operation can be completed in a short time without any trouble.
- the recovery operation does not take much time, there is no problem of dissociation or denaturation of the target molecule.
- a solution containing a target molecule is brought into contact with a detection surface of a pyrosensor device for analyzing an interaction between molecules.
- the target molecule captured on the detection surface (the target molecule that has actively reacted with the detection molecule) is transferred to a membrane, and the target molecule transferred to the membrane is placed in a liquid phase using, for example, enzyme digestion. After the elution, the sample solution is analyzed by mass spectrometry.
- mass spectrometry can identify the molecular species of the target molecule and perform structural analysis. For example, when the target molecule is a protein, the amino acid sequence, phosphorylation state, carbohydrate addition state, and the like are analyzed. When the target molecule is a lipid, the side chain length is analyzed. it can.
- a target molecule that has interacted with a detection molecule bound to a detection surface of a biosensor device for analyzing an interaction between molecules can be automatically transferred to a membrane.
- a molecular analysis device provided with at least an automatic molecular transfer means devised as described above.
- the sensor chip (or the detection surface site) is removed from the biosensor device, and the sensor chip (or the detection surface site) is set at a predetermined location.
- the detection molecule is automatically transferred to a solid phase, such as a membrane or the like, which is set in advance at a position facing one sensor chip by one means selected from transfer, compression transfer, and suction transfer.
- the apparatus may be provided with means that can automatically execute procedures such as washing, modification, enzymatic digestion, and extraction that are useful for subsequent analysis.
- the molecular analysis method or the molecular analysis device according to the present invention improves the working efficiency by collecting the molecules captured on the detection surface of the biosensor device into a solid phase, and improves the accuracy of the subsequent molecular analysis.
- FIG. 1 is a diagram simply showing the concept of a molecular transfer procedure of a molecular analysis method and a molecular transfer means of a molecular analysis device according to the present invention.
- FIG. 2 is a diagram schematically showing the state of the membrane (2) after the molecular transfer operation.
- FIG. 3 is a block diagram schematically showing the basic concept of the molecular analyzer according to the present invention.
- FIG. 4 is a diagram (graph) showing a real-time response curve by surface plasmon resonance.
- FIG. 5 is a diagram (photograph) showing a state of transfer to a film body.
- FIG. 1 is a diagram simply showing the concept of the molecular transfer procedure of the molecular analysis method according to the present invention and the molecular transfer means of the molecular analyzer.
- Reference numeral 1 in FIG. 1 indicates a detection surface of a sensor chip detached from a sensor unit of a biosensor device after an intermolecular interaction using the device.
- the type of the biosensor device and the configuration of the detection surface can be appropriately selected and are not narrowly limited.
- Reference numeral 2 in FIG. 1 indicates a membrane such as a PVA membrane, a nylon membrane, a nitrose layer membrane, and a membrane filter.
- the reaction surface 101 of the detection surface 1 is opposed to the film 2, and thereafter, the state where the reaction surface 101 is in contact with the transfer surface 201 of the film 2 is secured. Subsequently, the reaction of the detection surface 1 is performed by applying electricity to the detection surface 1, pressing the detection surface 1 against the transfer surface 201 and pressing the same, or using a suction force such as vacuum suction.
- the target molecule T is transferred from the surface 101 to the transfer surface 201 of the membrane 2 (molecular transfer procedure).
- FIG. 2 is a diagram schematically showing a state of the film body 2 after the molecular transfer operation.
- the target molecule T moves from the detection surface 1 to the transfer surface 201 of the membrane 2, and the target molecule T moves to the transfer surface 201. It will be in a state of attachment. That is, the target molecule T that has interacted with the detection molecule D in the solid phase is surely recovered in the solid phase.
- the detection molecule D may be transcribed to the membrane 2 at the same time.In this case, it is possible to distinguish between the two by the subsequent analysis. There is no problem in analyzing the structure of the target molecule ⁇ .
- the target molecule transcribed and collected on the membrane 2 is subjected to necessary washing, modification, enzymatic digestion, extraction, etc., depending on the subsequent analysis method, and identification and structural analysis of the molecular species are performed.
- FIG. 3 is a block diagram schematically showing the basic concept of the molecular analyzer according to the present invention.
- Reference numeral 3 in FIG. 3 denotes a biosensor using the Surface Plasmon Resonance (SPR) principle, which is an example of a biosensor device. . PT / JP03 / 03943
- SPR Surface Plasmon Resonance
- the configuration of a main part of the sensor device is simply shown, and the biosensor device 3 is provided with a sensor unit indicated by a reference symbol U.
- the sensor unit U includes SPR detection means 301 for optically detecting surface plasmon resonance that occurs when surface plasmons are excited at a metal-liquid interface.
- the SPR detection means 301 detects a subtle mass change occurring on the detection surface of the sensor chip as an SPR signal due to the binding and dissociation of the detection molecule and the target molecule.
- the sensor unit section U generally includes a microphone opening channel system 302 for performing accurate liquid supply control to the detection surface 1 and a sensor chip 303.
- a detection surface 1 is formed at a predetermined position of the sensor chip 303.
- the detection surface 1 has, for example, a configuration in which a gold thin film is deposited on a glass substrate, and the detection molecule D immobilized on the gold thin film side and the liquid are controlled and sent by the microchannel system. Provides a field for the interaction of the target molecules T contained in the solution.
- the sensor unit U may employ a cuvette method instead of the microchannel system 302.
- the sensor chip 303 is removed from the device 3 and transferred to the automatic molecular transfer device 4 I do.
- the sensor chip 303 (or the detection surface 1 removed from the sensor chip 303) is set at a predetermined transfer point 410a of the automatic transfer unit 401.
- the procedure for setting the sensor chip 303 at the transfer location 4Ola may be automated.
- the film body 2 is installed in advance at the above-described transfer location 401 a, and the sensor chip 303 is installed so as to face the detection surface 1 force S and the film body 2. .
- the transfer may be performed by appropriately selecting any of electrical transfer, pressure transfer, and suction transfer. Note that a transfer means combining these procedures is used. For example, it is possible to employ a means of suction-pressing the transfer portion 401a in a sealed state.
- the membrane 2 is taken out from the transfer location 401 a and transferred to a predetermined location 402 a of the analysis sample adjustment unit 402.
- the procedures for removing the membrane 2 from the transfer site 401 a and transferring it to the analytical sample preparation unit 402 may be fully automated.
- the analysis sample preparation section 402 has a configuration in which the pretreatment procedures for obtaining a sample S suitable for subsequent molecular analysis, such as washing, modification, enzymatic digestion, and extraction, can be appropriately selected. 'Enable the procedure to be performed automatically.
- FIG. 3 illustrates a configuration in which the automatic transfer unit 401 and the analysis sample preparation unit 402 are divided.
- the automatic transfer unit 401 and the analysis sample adjustment unit 402 may be integrated, and the transfer and the pretreatment procedure may be continuously performed in the automatic transfer unit 401 without transferring the membrane 2.
- the sample S obtained by preprocessing in the analysis sample adjusting unit 402 is applied to a molecular analyzer M such as a mass spectrometer to identify the molecular species and analyze the structure of the molecule. .
- a molecular analyzer M such as a mass spectrometer
- the inventor of the present application conducted an experiment for verifying whether or not the target molecule captured on the detection surface of the sensor chip was transferred to the membrane.
- the biosensor device used was a Biacore surface plasmon resonance sensor; BIACORE300, and the sensor chip used was Biacore CM5.
- Glutathione S-transferase antibody was immobilized on the sensor chip surface by the amine coupling method. After that, GST, which is a target molecule, was sent to and reacted on the sensor chip surface.
- the transfer efficiency was evaluated by the Western plot method.
- the same anti-GST antibody used as the detection molecule was used for the western blotting.
- the molecular analysis method or molecular analysis device of the present invention even a beginner can easily recover the target molecule captured on the detection surface to the solid phase, so that the time required for the molecular recovery operation can be greatly reduced, so It is convenient. In addition, there is no need for laborious preparation of a recovery column. In addition, since there is no need to recover the molecules for detection by using a solution, contamination present in the flow path system of the biosensor device does not mix into a very small amount of sample solution, and does not hinder analysis. Therefore, the accuracy of molecular analysis can be improved.
- the efficiency of work related to molecular analysis can be greatly improved, and the accuracy of subsequent molecular analysis can be improved.
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- Hematology (AREA)
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- Urology & Nephrology (AREA)
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/509,749 US20050164195A1 (en) | 2002-04-16 | 2003-03-28 | Method of analyzing molecule and molecule analyzer |
EP03746408A EP1494029A1 (en) | 2002-04-16 | 2003-03-28 | Method of analyzing molecule and molecule analyzer |
CA002482692A CA2482692A1 (en) | 2002-04-16 | 2003-03-28 | Method of analyzing molecule and molecule analyzer |
AU2003236185A AU2003236185A1 (en) | 2002-04-16 | 2003-03-28 | Method of analyzing molecule and molecule analyzer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-112934 | 2002-04-16 | ||
JP2002112934A JP3890249B2 (ja) | 2002-04-16 | 2002-04-16 | 分子解析方法及び分子解析装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003087826A1 true WO2003087826A1 (fr) | 2003-10-23 |
Family
ID=29243339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/003943 WO2003087826A1 (fr) | 2002-04-16 | 2003-03-28 | Procede d'analyse de molecule et analyseur de molecule |
Country Status (6)
Country | Link |
---|---|
US (1) | US20050164195A1 (ja) |
EP (1) | EP1494029A1 (ja) |
JP (1) | JP3890249B2 (ja) |
AU (1) | AU2003236185A1 (ja) |
CA (1) | CA2482692A1 (ja) |
WO (1) | WO2003087826A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007057458A (ja) * | 2005-08-26 | 2007-03-08 | Fujifilm Corp | バイオセンサー |
JP5187932B2 (ja) * | 2006-11-01 | 2013-04-24 | 独立行政法人科学技術振興機構 | 生体分子アッセイチップ |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09500208A (ja) * | 1993-07-06 | 1997-01-07 | スミスクライン・ビーチャム・コーポレイション | 流出したリガンド結合物質に対するコレクターを有する表面プラズモン共鳴検出器 |
JPH0949830A (ja) * | 1995-08-09 | 1997-02-18 | Terumo Corp | 刺激応答型分離材料および分離精製方法 |
-
2002
- 2002-04-16 JP JP2002112934A patent/JP3890249B2/ja not_active Expired - Fee Related
-
2003
- 2003-03-28 US US10/509,749 patent/US20050164195A1/en not_active Abandoned
- 2003-03-28 CA CA002482692A patent/CA2482692A1/en not_active Abandoned
- 2003-03-28 EP EP03746408A patent/EP1494029A1/en not_active Withdrawn
- 2003-03-28 AU AU2003236185A patent/AU2003236185A1/en not_active Abandoned
- 2003-03-28 WO PCT/JP2003/003943 patent/WO2003087826A1/ja not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09500208A (ja) * | 1993-07-06 | 1997-01-07 | スミスクライン・ビーチャム・コーポレイション | 流出したリガンド結合物質に対するコレクターを有する表面プラズモン共鳴検出器 |
JPH0949830A (ja) * | 1995-08-09 | 1997-02-18 | Terumo Corp | 刺激応答型分離材料および分離精製方法 |
Also Published As
Publication number | Publication date |
---|---|
JP3890249B2 (ja) | 2007-03-07 |
AU2003236185A1 (en) | 2003-10-27 |
US20050164195A1 (en) | 2005-07-28 |
CA2482692A1 (en) | 2003-10-23 |
JP2003307519A (ja) | 2003-10-31 |
EP1494029A1 (en) | 2005-01-05 |
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