WO2006011510A1 - 試料採取具 - Google Patents
試料採取具 Download PDFInfo
- Publication number
- WO2006011510A1 WO2006011510A1 PCT/JP2005/013729 JP2005013729W WO2006011510A1 WO 2006011510 A1 WO2006011510 A1 WO 2006011510A1 JP 2005013729 W JP2005013729 W JP 2005013729W WO 2006011510 A1 WO2006011510 A1 WO 2006011510A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sampling
- gel
- sample
- collection
- spot
- Prior art date
Links
Classifications
-
- 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
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44704—Details; Accessories
- G01N27/44717—Arrangements for investigating the separated zones, e.g. localising zones
- G01N27/44739—Collecting the separated zones, e.g. blotting to a membrane or punching of gel spots
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
Definitions
- the present invention relates to a sample collecting tool for collecting a micro site containing a biomolecule from a carrier such as a gel.
- proteome analysis is attracting attention.
- proteomic analysis comprehensive analysis of proteins contained in cells constituting a living body is performed, and in recent years, protein separation by electrophoresis and protein profiling using mass spectrometry are frequently performed.
- a biological sample prepared for electrophoresis is separated into bands one-dimensionally or two-dimensionally on a polyatrylamide gel, followed by staining and image analysis. And cut out the bands or spots of each protein based on the results.
- a sample containing a digested peptide fragment as a specimen sample for mass spectrometry is collected using a solution reagent or the like. Then, mass analysis of the peptide fragment was performed, and the theoretical mass spectrum of the peptide fragment predicted from the database was compared with the pattern of the actually measured mass spectrum using a search engine for protein identification. Identify the previous protein.
- Non-patent literature 1 Pro Phoenix Co., Ltd. website [Searched on June 30, 2004], Ing LTRL: http://www.prophoenix.co.jp/ contents 25.ntm
- Non-Patent Document 2 Shimadzu Corporation website [Search June 30, 2004], Internet ⁇ Net ⁇ URL: http://www.shimadzu.co.jp/news/press/ 020715.html>
- the present invention has been made in view of intensive circumstances, and it is possible to easily and reproducibly cut out a target minute site containing a biomolecule from a carrier such as a gel.
- the purpose is to provide a sampling tool that can increase the recovery rate of the target substance from the plant.
- a sample collecting tool includes a substantially cylindrical body, a collecting unit from which a sample is collected, and an open end opened from the collecting unit toward the tip.
- the body part and the collection part are connected via a through hole having a diameter smaller than the outermost diameter of the collection part.
- the sample collecting tool has a substantially cylindrical body, an open end that opens to the tip, and is connected to communicate with the body.
- a sampling portion having a diameter smaller than the outermost diameter of the sampling portion at a connecting portion (communication portion) between the trunk portion and the sampling portion.
- a through hole is formed.
- the distal end of the collecting part connected to the trunk part through the through hole is an open end, for example, a gel or the like containing a biomolecule such as a protein.
- a gel or the like containing a biomolecule such as a protein.
- the carrier sample filled in the collection part is separated from the surrounding site force.
- the gel in the corresponding part can be simplified by pulling the sample-collecting tool away from the gel while securely holding the gel in the sampling part. It is cut out.
- the means for making the inside of the body part negative is not particularly limited.
- a pipette cylinder or the like capable of sucking air in the body part may be attached to the other end of the body part.
- the opening size and the opening shape of the open end are set in advance so as to match the band width and spot size of the biomolecule in the gel as the carrier sample, for example, it is intended. It may be possible to prevent cutting out of the extra portion of the carrier other than the band or spot.
- the sample collecting tool according to the present invention has a so-called two-stage structure in which the body portion and the collecting portion are connected to each other, and the through force provided in the connecting portion (communication portion) between them is also provided. Since it has a diameter smaller than the outermost diameter of the sampling part, it is easy to prevent a carrier sample such as a cut gel from moving and flowing from the sampling part to the trunk part.
- the sampling is performed when the inside of the body portion is under negative pressure.
- the carrier sample filled in the internal space of the part is hardly sucked into the body part. Therefore, it is preferable to form the connection part between the body part and the collection part so that the carrier sample does not flow into the body part from the collection part by adjusting the shape and diameter of the through hole.
- the size and number of the through-holes can be set as appropriate so that the carrier sample does not easily flow into the barrel according to the type and properties of the carrier sample, the pressure in the barrel during negative pressure, and the like.
- the sampling part has a substantially cup shape
- the trunk part has one end smaller than the outer diameter of the sampling part and is connected to the bottom wall of the sampling part. More preferred to have been Yes.
- the cross-sectional shape of the sampling part is not limited, and may be, for example, a square, a polygon, or a circle. More specifically, a material having a rectangular cross section can be mentioned.
- the sampling part since the sampling part has a box-type structure, the carrier sample is held as it is, and the cut carrier sample is discharged (discharged) by the sampling part force. ). Furthermore, since the sampling part has a simple shape as described above, it is easy to form the combing force to match the size, shape and volume of the band or spot on the carrier. Furthermore, it is easy to miniaturize the sampling tool by forming the body part into a 'tapered' shape so that one end side is thinner than the other end side, and a narrow band or minute spot is cut out. The operability and operability are improved.
- the body portion has a notch portion or a notch portion formed on the peripheral wall.
- the notch or the notch is fixed to a gripping tool or the like that can be locked or fitted with them.
- the body part and thus the sampling tool can be turned in the circumferential direction so that the orientation can always be constant.
- the sampling part does not rotate in the circumferential direction, even when the sampling part is non-circular in cross section, its orientation with respect to the target band or spot on the carrier can be kept constant, and the sampling target Can be cut out more reliably.
- the sample collection tool since the sample collection tool is fixed, the overall operability and handling when the sample collection tool is attached to a pipette cylinder etc. is improved.
- the thickness force of the peripheral wall of the sampling part is 0.2 mm or less. From the viewpoint of easily imparting strength, 0.05 to 0.2 mm is more preferable.
- sample collecting device is particularly useful when the sample is a gel (in the form of a gel).
- a target band or spot which is a micro site
- a carrier sample such as a gel containing biomolecules.
- It also becomes possible to increase the recovery rate of substances.
- it is possible to suppress variations in measured values in subsequent analysis processing, and to provide highly reliable analysis evaluation.
- the body part and the collection part are connected through a through-hole having a diameter smaller than the outermost diameter of the collection part, it is easy to suck a carrier sample such as a gel from the collection part into the body part. Can be prevented.
- FIGS. 1A to 1D are schematic views showing a preferred embodiment of a sample collecting tool according to the present invention, which are a front view, a top view, a bottom view, and a side view, respectively.
- the chip 1 (sample collecting tool) is obtained by providing a rectangular cup-shaped sampling portion 20 at one end 10a of the barrel 10 having a substantially cylindrical shape.
- the body portion 10 is composed of a base portion 11, a middle portion 12, and a tip portion 13. Each of the body portions 10 is tapered so that the diameter gradually decreases from the other end 10b to the one end 10a. Yes.
- the base portion 11 has a diameter larger than that of the middle portion 12, and for example, a pipette (not shown) is detachably fitted thereto.
- the base 11 is provided with a stagger 14 slightly closer to the inside from the other end 10b, to which the tip of the pipette abuts. Further, two notches 15 and 15 are formed on the end periphery of the base portion 11 on the middle portion 12 side so as to face each other.
- the middle portion 12 is a portion that connects the base portion 11 and the distal end portion 13 and has a diameter smaller than that of the base portion 11 and is relatively long.
- the tip portion 13 is formed in a relatively short length so as to taper at a steeper angle than the base portion 11 and the middle portion 12.
- the tip portion 13 and the sampling portion 20 are separated by a bottom wall 21 (upper wall in the figure) of the sampling portion 20! / Speak, but the bottom wall 21 has a pore H (through hole) drilled. Thereby, the internal space of the trunk portion 10 and the internal space of the sampling portion 20 communicate with each other.
- the opening size of the open end 20a of the collection unit 20 is not particularly limited, but it is desirable to set the size to match the size of the band or spot of a biological sample such as a protein to be described later. .
- a biological sample such as a protein to be described later.
- one side of the cross section is about 1 to 2 mm.
- the thickness of the peripheral wall of the sampling part 20 is not particularly limited, but if a suitable strength is ensured, a specific dimension that is preferably as thin as possible is, for example, about 0.05 to 0.2 mm. . In this way, when the sample to be collected is a carrier sample such as a gel, the gel is easily sheared sharply by the peripheral wall that does not crush the gel.
- the diameter of the pores H provided in the collecting part 20 is not particularly limited, but when the inside of the body part 10 is set to a negative pressure as described later, the gel filled in the collecting part 20 is contained in the body part 10. It is desirable to make it so that it is not sucked into.
- Specific diameters of the pores H include, for example, about 0.1 to 1. Omm.
- a sheet-like gel that is formed on a predetermined substrate and that has been subjected to electrophoresis and then has a protein band or spot identified by staining and image analysis is prepared.
- the tip 1 is attached to the pipette, and the sampling part 20 of the tip 1 is pressed from above the target protein band or spot so as to pierce the gel.
- it is preferably fixed to a gripping tool or the like (not shown) that can be locked or fitted to the notch 15.
- the sampling part 20 can always be in a constant orientation in the circumferential direction simply by locking or fitting the notch part 15 to the gripping tool.
- the collection unit 20 When the collection unit 20 is pressed against the target protein band or spot, the internal space of the collection unit 20 is filled with the gel at that site. At this time, since the peripheral wall of the collection unit 20 pierces the gel and cuts the gel, the gel filled in the collection unit 20 is separated from the surrounding region. Next, the pipette is operated in this state, and the air in the body part 10 is sucked to make the inside negative pressure. Then, the body 10 and the collection unit 20 communicate with each other through the pores H, so that the gel filled in the collection unit 20 is pulled toward the body 10 and is securely held in the chip 1.
- the gel in the collection unit 20 is pulled away from the substrate, and the target protein spot is cut out from the gel sheet.
- the gel may be held more securely by further sucking air in the body portion 10.
- the gel cut out in this manner is easily discharged from the collection part 20 to the outside by making the inside of the body part 10 positive by pipetting.
- the gel is collected by pressing the chip 1 against the target protein band or spot without transferring the gel sheet to another location such as the substrate cover.
- the band or spot can be cut out very simply by filling the inside, pipetting and pulling it out as it is.
- the barrel portion 10 and the sampling portion 20 have a two-stage structure, the gel in the sampling portion 20 hardly flows into the barrel portion 10 as will be described later.
- the cut-out gel can be easily discharged (discharged) from the collection unit 20.
- the amount of gel to be cut out is determined by the internal volume of the collection unit 20, and is always a constant amount, and therefore the reproducibility of the cut out amount is extremely excellent. Furthermore, by setting the opening size shape of the open end 20a of the sampling part 20 to substantially match the size and shape of the protein band or spot, unnecessary gel other than the target band or spot can be sampled at the same time. Can be prevented. As a result, the recovery rate of the target substance from the band or spot can be sufficiently increased.
- the body part 10 and the collection part 20 are communicated with each other through the pores H, it becomes easier to prevent the gel filled in the collection part 20 from being sucked into the body part 10 side. . Therefore, the gel containing the cut-out band and spot part is more securely held in the collection part 20. And all of them can be easily discharged to the outside of the sampling unit 20.
- the gel retainability is extremely excellent as described above, for example, a chemical solution or a solution such as a reagent is previously sucked into the body 10 before cutting out the gel, and then the gel is cut out and collected. If held in the part 20, the cut out gel together with the chemical solution or solution can be discharged together from the collection part 20 into the same container or the like.
- the solution is collected in the barrel 10 and the gel is reliably collected in the collection unit 20 by performing a suction operation with a pipette equipped with the tip 1. Can do.
- the solution and gel can be discharged together in the same container etc. by the pipette discharging operation. Even in such a case, the recovery rate of the gel can be sufficiently increased.
- the collection part 20 has a cup shape, that is, a box-shaped structure, it is easy to hold the gel in a state of being cut off. This also makes it possible to discharge the cut carrier 20 very easily. Since the sampling part 20 has a simple shape, it is easy to form, and it is easy to match the size, shape and volume of the protein band and spot. Since the body 10 is tapered so that one end 10a is thinner than the other end 10b, chip 1 can be easily miniaturized and handled when cutting out minute protein bands and spots. And operability can be improved.
- the tip 1 when the notch 15 is locked or fitted to the gripping tool, the tip 1 does not rotate in the circumferential direction, so that the sampling part is always pressed against the gel in a fixed orientation.
- the present invention is not limited to the above-described embodiment, and various modifications can be made without changing the gist thereof.
- the body 10 of the chip 1 may have a rectangular tube shape, and the sampling unit 20 may have a cup shape with a circular cross section.
- the body 10 does not necessarily have to be tapered.
- the notch 15 may be provided at only one place, or may be provided at three or more places.
- the notch 15 may be a narrower notch, that is, a notch.
- applicable cutting targets are not limited to protein bands and spots, but may be DNA bands, for example! /. Industrial applicability
- the sample collection tool includes the body portion and the collection portion connected via the through-hole, so that a target band or spot is obtained from a carrier sample such as a gel containing biomolecules. It can function as a so-called 'gel picker' that can be cut out easily and reproducibly, and the recovery rate of the target substance from the gel can be increased. Therefore, it can be widely used for analysis of carriers containing biomolecules and sample preparation therefor.
- FIG. 1] (A) to (D) are schematic views showing a preferred embodiment of a sampling tool according to the present invention.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004222181A JP2007209360A (ja) | 2004-07-29 | 2004-07-29 | 試料採取具 |
JP2004-222181 | 2004-07-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006011510A1 true WO2006011510A1 (ja) | 2006-02-02 |
Family
ID=35786260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/013729 WO2006011510A1 (ja) | 2004-07-29 | 2005-07-27 | 試料採取具 |
Country Status (2)
Country | Link |
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JP (1) | JP2007209360A (ja) |
WO (1) | WO2006011510A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10871425B2 (en) | 2015-01-31 | 2020-12-22 | Roche Molecular Systems Inc. | Systems and methods for meso-dissection |
US10876933B2 (en) | 2016-11-09 | 2020-12-29 | Ventana Medical Systems, Inc. | Automated tissue dissection instrument and methods of using the same |
US11125660B2 (en) | 2015-01-31 | 2021-09-21 | Roche Molecular Systems, Inc. | Systems and methods for meso-dissection |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012102779A2 (en) | 2011-01-24 | 2012-08-02 | Adey Nils B | Devices, systems, and methods for extracting a material from a material sample |
WO2015186673A1 (ja) * | 2014-06-04 | 2015-12-10 | シャープ株式会社 | 媒体切り出し器具、媒体切り出し装置および媒体切り出し方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5228927A (en) * | 1975-08-29 | 1977-03-04 | Eisai Co Ltd | Process for cutting and perforating membranes made of agar plate, etc. |
JPH075145A (ja) * | 1993-06-16 | 1995-01-10 | Ngk Spark Plug Co Ltd | カートリッジ型分析装置及びカートリッジ |
JPH07132079A (ja) * | 1993-11-10 | 1995-05-23 | Hitachi Ltd | ゲル切り出し装置 |
JP2001041928A (ja) * | 1999-07-28 | 2001-02-16 | Aloka Co Ltd | 試料成分分離装置 |
JP2002542456A (ja) * | 1999-02-17 | 2002-12-10 | ジェノミック ソリューションズ インコーポレイテッド | 2次元電気泳動ゲルからの自動サンプル摘出方法及び装置 |
JP3101144U (ja) * | 2003-10-21 | 2004-06-03 | 有限会社トッケン | 電気泳動ゲル切り出し器具 |
-
2004
- 2004-07-29 JP JP2004222181A patent/JP2007209360A/ja active Pending
-
2005
- 2005-07-27 WO PCT/JP2005/013729 patent/WO2006011510A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5228927A (en) * | 1975-08-29 | 1977-03-04 | Eisai Co Ltd | Process for cutting and perforating membranes made of agar plate, etc. |
JPH075145A (ja) * | 1993-06-16 | 1995-01-10 | Ngk Spark Plug Co Ltd | カートリッジ型分析装置及びカートリッジ |
JPH07132079A (ja) * | 1993-11-10 | 1995-05-23 | Hitachi Ltd | ゲル切り出し装置 |
JP2002542456A (ja) * | 1999-02-17 | 2002-12-10 | ジェノミック ソリューションズ インコーポレイテッド | 2次元電気泳動ゲルからの自動サンプル摘出方法及び装置 |
JP2001041928A (ja) * | 1999-07-28 | 2001-02-16 | Aloka Co Ltd | 試料成分分離装置 |
JP3101144U (ja) * | 2003-10-21 | 2004-06-03 | 有限会社トッケン | 電気泳動ゲル切り出し器具 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10871425B2 (en) | 2015-01-31 | 2020-12-22 | Roche Molecular Systems Inc. | Systems and methods for meso-dissection |
US11125660B2 (en) | 2015-01-31 | 2021-09-21 | Roche Molecular Systems, Inc. | Systems and methods for meso-dissection |
US11181449B2 (en) | 2015-01-31 | 2021-11-23 | Roche Molecular Systems, Inc. | Systems and methods for meso-dissection |
US11768136B2 (en) | 2015-01-31 | 2023-09-26 | Roche Molecular Systems, Inc. | Systems and methods for meso-dissection |
US11860072B2 (en) | 2015-01-31 | 2024-01-02 | Roche Molecular Systems, Inc. | Systems and methods for meso-dissection |
US10876933B2 (en) | 2016-11-09 | 2020-12-29 | Ventana Medical Systems, Inc. | Automated tissue dissection instrument and methods of using the same |
US11971333B2 (en) | 2016-11-09 | 2024-04-30 | Ventana Medical Systems, Inc. | Automated tissue dissection instrument and methods of using the same |
Also Published As
Publication number | Publication date |
---|---|
JP2007209360A (ja) | 2007-08-23 |
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