WO2006059655A1 - 微生物又は細胞の分離方法 - Google Patents
微生物又は細胞の分離方法 Download PDFInfo
- Publication number
- WO2006059655A1 WO2006059655A1 PCT/JP2005/022012 JP2005022012W WO2006059655A1 WO 2006059655 A1 WO2006059655 A1 WO 2006059655A1 JP 2005022012 W JP2005022012 W JP 2005022012W WO 2006059655 A1 WO2006059655 A1 WO 2006059655A1
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- WO
- WIPO (PCT)
- Prior art keywords
- particles
- microorganism
- cells
- sample
- microorganisms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/02—Separating microorganisms from their culture media
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
- B03C1/015—Pretreatment specially adapted for magnetic separation by chemical treatment imparting magnetic properties to the material to be separated, e.g. roasting, reduction, oxidation
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/10—Processes for the isolation, preparation or purification of DNA or RNA
- C12N15/1003—Extracting or separating nucleic acids from biological samples, e.g. pure separation or isolation methods; Conditions, buffers or apparatuses therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/26—Details of magnetic or electrostatic separation for use in medical or biological applications
Definitions
- the present invention relates to a method for separating microorganisms or cells from a sample, and a method for extracting a microorganism or cellular force nucleic acid separated using the method.
- hydroxyapatite crystals are converted to hydrochloric acid (pH 2.
- hydroxyapatite gel is formed by adding sodium hydroxide and adjusting the pH to 8.0, and by applying magnetic particles to this and performing ultrasonic treatment Magnetic particles whose surface is coated with loxyapatite gel (hereinafter referred to as “surface-coated magnetic particles”
- the surface-coated magnetic particles are added to the E. coli-containing solution to form a complex containing the surface-coated magnetic particles and E. coli, and the complex is separated by the action of a magnet.
- a method of dissociating E. coli from the complex by treatment with a chelating agent such as EDTA is known (Patent Document 1).
- Patent Document 1 Japanese Patent Laid-Open No. 2003-102465
- An object of the present invention is to provide a method for efficiently separating microorganisms or cells from a sample containing microorganisms or cells, and a method for extracting microorganisms or cellular force nucleic acids separated using the method. To do.
- the present invention provides a sample containing a microorganism or cells.
- a method for separating microorganisms or cells wherein a liquid containing the sample, ion exchanger particles, and magnetic particles whose surfaces are coated with calcium phosphate compound hydrated gel is prepared, and a magnet is prepared.
- a method is provided that separates a complex containing the microorganism or the cell, the ion-exchanged particle, and the magnetic particle from the liquid by acting.
- the present invention also relates to a method for extracting nucleic acid from a microorganism or cell contained in a sample, wherein the microorganism or the cell is separated from the sample by using the method of the present invention and separated.
- a method characterized by extracting nucleic acids from microorganisms or the cells is provided.
- a method for efficiently separating a microorganism or cells containing a microorganism or cells and a method for extracting nucleic acids from the microorganisms or cells separated using the method.
- a magnetic particle whose surface is coated with a calcium phosphate compound compound hydrated gel is used in combination with a magnetic particle whose surface is coated with a calcium phosphate compound compound hydrated gel and an ion exchanger particle.
- Sample power Microorganisms or cells can be separated more efficiently than when using body particles alone.
- FIG. 1 is a diagram showing the results of electrophoresis of genomic DNA from which high-temperature environmental soil force was also extracted.
- FIG. 2 is a diagram showing the results of electrophoresis of extracted genomic DNA.
- the sample contains one type or two or more types of microorganisms or cells.
- the type of microorganism or cell contained in the sample may be known or unknown.
- the microorganism contained in the sample may be either a prokaryotic microorganism or a eukaryotic microorganism.
- the prokaryotic microorganism include gram-positive bacteria (for example, the genus Micrococcus, Staphylococcus genus, Bacillus ⁇ , Clostndium J3 ⁇ 4, Bacteria such as Lactobacillus genus, Corynebacterium, Streptomyces genus, etc.), Guhum's negative bacterium (e.g., Rhodopseudomonas genus, Pseudomonas genus, Esherichia genus, Salmonella genus, Nitrobacter genus, Thiobacillus genus, Neisseria genus etc.)
- eukaryotic microorganisms include fungi such as filamentous fungi (molds) and yeasts.
- prokaryotic cells which may be either prokaryotic cells or eukaryotic cells, include cells of prokaryotic microorganisms, and examples of eukaryotic cells include eukaryotic cells. Examples include nuclear microorganism cells, animal or plant cells, and the like.
- sample for example, soil, water, mud, sediment, or a treated product thereof collected from various environments can be used.
- Examples of the treatment of soil, water, mud, sediment, etc. collected from various environments include suspension or dilution with a buffer solution or the like, filtration with a filter, etc.
- sample for example, a sample prepared by adding a buffer solution to soil, mud, sediment, etc. to be suspended and filtering with a filter etc. to remove solids such as pebbles can be used.
- the ion exchanger particles are particles that also have an ion exchanger force.
- the ion exchanger has an ion exchange group held on a water-insoluble substrate, and examples thereof include ion exchange resin and ion exchange cellulose.
- ion exchange resin substrates include
- the particle size of the ion exchanger particles is usually 0.1 ⁇ m to 1 mm, preferably 0.5 to 10 ⁇ m.
- the ion exchanger particles may be force-indefinite, usually spherical.
- a calcium phosphate compound hide-mouthed gel is a gel in which water molecules are held between calcium phosphate compounds aggregated in a network.
- the Ca ZP molar ratio in the calcium phosphate compound is usually 0.5 to 2.0, preferably 1.0 to 1.7.
- apatite particularly hydroxyapatite [Ca (PO) (OH)] is preferred.
- the calcium phosphate compound hide-mouthed gel can be prepared according to a conventional method.
- apatite as the calcium phosphate-based compound
- P H2 an acid such as hydrochloric acid
- An apatite hydride mouth gel can be prepared.
- a hide-mouth gel can be similarly prepared.
- the magnetic particles are particles made of a magnetic material such as iron hydroxide and acid iron hydrate.
- the particle size of the magnetic particles is usually 10 nm to 10 ⁇ m, preferably 40 nm to 1 ⁇ m.
- the magnetic particles may be force-indefinite, usually spherical.
- a magnetic particle whose surface is coated with a calcium phosphate compound compound or id gel (hereinafter sometimes referred to as "surface-coated magnetic particle") is dispersed in the calcium phosphate compound hide gel. Then, it can be prepared by separating the calcium phosphate-based compound gel and the gel in a lump by ultrasonic treatment or the like.
- the surface-coated magnetic particles thus prepared may take a form in which one magnetic particle is held inside one lump of calcium phosphate compound hydrogel, but usually a plurality of magnetic particles are used. It takes the form that a child is held inside a lump of calcium phosphate-based hyde mouth gel.
- the liquid containing the sample, the ion exchanger particles, and the surface-coated magnetic particles is a liquid in which microorganisms or cells contained in the sample can stably exist.
- a liquid include: , Buffer solution, physiological saline, liquid medium or a mixture thereof.
- the liquid containing the sample, the ion exchanger particles, and the surface-coated magnetic particles may contain a buffer, an isotonic agent, a pH adjuster, and the like. “The microorganism or cell can exist stably” means that the microorganism or cell does not have to be destroyed, and the microorganism or cell need not be able to survive.
- a liquid containing a sample, ion exchanger particles, and surface-coated magnetic particles is, for example, a liquid sample. It can be prepared by adding ion exchanger particles (or a solution containing ion exchanger particles) and surface-coated magnetic particles (or a solution containing surface-coated magnetic particles) to the material.
- the ion exchanger particles, and the surface-coated magnetic particles are bonded to each other.
- a composite containing the particles and the surface-coated magnetic particles is formed.
- the binding between the microorganism or cell and the ion exchanger particle is, for example, an ion exchange group possessed by the ion exchanger particle and a functional group on the microorganism or cell surface (the ion exchange group can exchange a cation).
- the ion exchange group can exchange a cation
- it is a functional group such as an amino group and the ion exchange group can exchange an anion, for example, it is a functional group such as a phosphate group or a carboxyl group. Conceivable.
- the binding between the microorganism or cell and the surface-coated magnetic particle is, for example, a reaction between a functional group (for example, a phosphate group) on the microorganism or cell surface and a calcium site of the surface-coated magnetic particle, or a microorganism or cell.
- a functional group for example, a phosphate group
- This is considered to be caused by a reaction between a functional group on the surface (for example, an amino group) and the phosphoric acid portion of the surface-coated magnetic particles.
- the binding between the surface-coated magnetic particles and the ion exchanger particles is, for example, a reaction between a nitrogen atom site of the anion exchanger and a functional group (for example, a phosphate group) on a microorganism or cell surface, or ion exchange. It is thought to be caused by a reaction between a hydrophobic part of the resin (for example, a styrenic rosin base) and a hydrophobic part (for example, a lipid part) on the surface of a microorganism or cell.
- a hydrophobic part of the resin for example, a styrenic rosin base
- a hydrophobic part for example, a lipid part
- the order of mixing the sample, ion exchanger particles, and surface-coated magnetic particles is not particularly limited.
- the surface-coated magnetic particles may be mixed after mixing the ion-exchanger particles! /, And the ion-exchanger particles may be mixed after mixing the sample and the surface-coated magnetic particles! /
- the sample may be mixed after the ion exchanger particles and the surface-coated magnetic particles are mixed, and the sample, the ion exchanger particles, and the surface-coated magnetic particles may be mixed at the same time.
- the microorganisms or cells can be separated more efficiently than when mixing in the other order. That is, when the surface-coated magnetic particles are mixed after mixing the sample and the ion exchanger particles, a large amount of microorganisms or cells are aggregated due to the binding between the ion exchanger particles and the microorganisms or cells, and a large amount of the aggregated microorganisms are formed. Since it is covered with the surface-coated magnetic particles, a complex containing a large amount of microorganisms or cells can be formed, and the complex force of the microorganisms or cells can be prevented from detaching.
- the temperature at which a complex containing microorganisms or cells, ion exchanger particles and surface-coated magnetic particles is formed is usually 20 to 40 ° C, preferably 25 to 37 ° C, and the pH is usually pH 4-9, preferably pH 7-9.
- the liquid force can also be separated by the action of a magnet.
- a permanent magnet or an electromagnet can be used as the magnet.
- Complex power When dissociating microorganisms or cells, the complex can be reacted with a chelating agent solution such as potassium phosphate buffer, EDTA, or citrate, or the pH of the complex-containing solution can be lowered.
- Nucleic acid extraction from a microorganism or cell separated from a sample can be performed according to a conventional method. For example, after a microorganism or cell is treated with a cell lysing agent such as lysozyme and lysed, the surface is coated with a substance that can bind to nucleic acid (for example, silica, alkyl silica, aluminum silicate (zeolite), etc.). Nucleic acids extracted from microorganisms or cells can be obtained by mixing body particles, forming a complex containing nucleic acid and magnetic particles, and separating the complex by applying a magnet.
- a cell lysing agent such as lysozyme and lysed
- Nucleic acids extracted from microorganisms or cells can be obtained by mixing body particles, forming a complex containing nucleic acid and magnetic particles, and separating the complex by applying a magnet.
- a nucleic acid extraction apparatus using a dispenser for example, SX-6GC (manufactured by Precision System Science Co., Ltd.)
- a dispenser for example, SX-6GC (manufactured by Precision System Science Co., Ltd.)
- magnetic particles for separation of microorganisms or cells from a sample and nucleic acid extraction from separated microorganisms or cells
- a series of steps from separation of microorganisms or cells to extraction of nucleic acids can be automated.
- hydroxyapatite crystal powder manufactured by Sangi, for chromatography
- 4 ml of 2N hydrochloric acid manufactured by Wako
- pH becomes 2.0 or less
- 4 ml of 2N sodium hydroxide manufactured by Wako
- add 6g of 40-60nm magnetite particles US Army
- further sterilized ultrapure water to make the total volume 200ml, and then ultrasonically treat for 5-10 minutes.
- Magnetite particles (hereinafter referred to as “surface-coated magnetite particles”) whose surface was coated with a hydride gel were prepared.
- the surface-coated magnetite particles thus prepared take a form in which a plurality of magnetite particles are held inside one lump of calcium phosphate-based hyde mouth gel.
- the surface-coated magnetite particles were sterilized by autoclaving at 121 ° C for 15 minutes and then used.
- anion exchange resin Amberlite, manufactured by Organo
- anion exchange resin Amberlite, manufactured by Organo
- the body is a styrenic polymer.
- Example 3 Separation of microorganisms from a sample and extraction of genomic DNA of separated microorganisms
- a complex containing microorganisms contained in the soil solution, ion exchanger particles, and surface-coated magnetite particles was formed.
- ion exchanger particles were added to the soil solution and stirred using vortex, then surface-coated magnetite particles were added, and the mixture was stirred using vortex.
- the complex was separated from the soil solution using a magnet. 800 mM potassium phosphate buffer (KPB, manufactured by Wako) 200 1 was added to the separated complex and stirred at room temperature for 20 minutes to dissociate microorganisms from the complex. The magnetite particles and the solution were separated using a magnet, and the solution was recovered.
- KPB potassium phosphate buffer
- FIG. 1 As a result, as shown in FIG. 1, it was confirmed that genomic DNA having a length of 10 kilobase pairs or more was recovered, although the amount was somewhat.
- “ ⁇ ” represents a molecular weight marker (Wide range marker (Takara))
- lanes 1 to 3 are the results of the nucleic acid extraction device (lanes 1 to 3 correspond to sample numbers 1 to 3, respectively).
- Lanes 4 to 6 show the results of existing DNA extraction kits (lanes 4 to 6 correspond to sample numbers 1 to 3, respectively).
- Fig. 2 shows the results of electrophoresis.
- “ ⁇ ” represents the molecular weight marker ( ⁇ -HindIII)
- lane 1 shows the result of direct DNA extraction from the E. coli culture solution
- lane 2 shows the result of Example 4 (1)
- Lane 3 shows the results of Example 4 (2).
- Table 2 shows the quantification results of the extracted DNA. Quantification of DNA was measured using an absorbance meter DU530 (manufactured by Beckman).
- the recovery rate of genomic DNA is higher when the surface-coated magnetite particles are used in combination with the ion exchanger than when the surface-coated magnetite particles are used alone. That is, it was confirmed that E. coli capture efficiency was high.
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- Chemical & Material Sciences (AREA)
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- Genetics & Genomics (AREA)
- Biomedical Technology (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Biotechnology (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
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- Crystallography & Structural Chemistry (AREA)
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- General Chemical & Material Sciences (AREA)
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- Micro-Organisms Or Cultivation Processes Thereof (AREA)
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Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006547985A JPWO2006059655A1 (ja) | 2004-11-30 | 2005-11-30 | 微生物又は細胞の分離方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004346625 | 2004-11-30 | ||
| JP2004-346625 | 2004-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006059655A1 true WO2006059655A1 (ja) | 2006-06-08 |
Family
ID=36565088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/022012 Ceased WO2006059655A1 (ja) | 2004-11-30 | 2005-11-30 | 微生物又は細胞の分離方法 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPWO2006059655A1 (ja) |
| WO (1) | WO2006059655A1 (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009247244A (ja) * | 2008-04-03 | 2009-10-29 | Universal Bio Research Co Ltd | 生体関連物質の分離回収方法 |
| JP2013226149A (ja) * | 2013-06-10 | 2013-11-07 | Universal Bio Research Co Ltd | 生体関連物質の分離回収方法 |
| US8669316B2 (en) | 2011-12-07 | 2014-03-11 | National Chung Cheng University | Magnetic ion-exchange resin and method for the preparation thereof |
| JP2016144445A (ja) * | 2015-01-28 | 2016-08-12 | ユニバーサル・バイオ・リサーチ株式会社 | 自動バクテリア等検出装置およびその方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01137999A (ja) * | 1987-11-20 | 1989-05-30 | Shimadzu Corp | 微生物含有生体試料の処理方法 |
| JPH09169794A (ja) * | 1995-12-22 | 1997-06-30 | Mitsubishi Materials Corp | 蛋白質類の分離方法 |
| JP2000014380A (ja) * | 1998-07-03 | 2000-01-18 | Nissui Pharm Co Ltd | 菌体濃縮方法及び菌体濃縮試薬 |
| JP2001327282A (ja) * | 2000-05-22 | 2001-11-27 | Jsr Corp | ウイルス濃縮用粒子、該粒子を使用するウイルス濃縮方法およびウイルス検出方法 |
| JP2003102465A (ja) * | 2001-09-27 | 2003-04-08 | Precision System Science Co Ltd | 標的物質の分離方法 |
| WO2003031014A1 (en) * | 2001-10-12 | 2003-04-17 | Protista International Ab | Separation medium, its preparation and its use |
-
2005
- 2005-11-30 WO PCT/JP2005/022012 patent/WO2006059655A1/ja not_active Ceased
- 2005-11-30 JP JP2006547985A patent/JPWO2006059655A1/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01137999A (ja) * | 1987-11-20 | 1989-05-30 | Shimadzu Corp | 微生物含有生体試料の処理方法 |
| JPH09169794A (ja) * | 1995-12-22 | 1997-06-30 | Mitsubishi Materials Corp | 蛋白質類の分離方法 |
| JP2000014380A (ja) * | 1998-07-03 | 2000-01-18 | Nissui Pharm Co Ltd | 菌体濃縮方法及び菌体濃縮試薬 |
| JP2001327282A (ja) * | 2000-05-22 | 2001-11-27 | Jsr Corp | ウイルス濃縮用粒子、該粒子を使用するウイルス濃縮方法およびウイルス検出方法 |
| JP2003102465A (ja) * | 2001-09-27 | 2003-04-08 | Precision System Science Co Ltd | 標的物質の分離方法 |
| WO2003031014A1 (en) * | 2001-10-12 | 2003-04-17 | Protista International Ab | Separation medium, its preparation and its use |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009247244A (ja) * | 2008-04-03 | 2009-10-29 | Universal Bio Research Co Ltd | 生体関連物質の分離回収方法 |
| US8669316B2 (en) | 2011-12-07 | 2014-03-11 | National Chung Cheng University | Magnetic ion-exchange resin and method for the preparation thereof |
| JP2013226149A (ja) * | 2013-06-10 | 2013-11-07 | Universal Bio Research Co Ltd | 生体関連物質の分離回収方法 |
| JP2016144445A (ja) * | 2015-01-28 | 2016-08-12 | ユニバーサル・バイオ・リサーチ株式会社 | 自動バクテリア等検出装置およびその方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2006059655A1 (ja) | 2008-06-05 |
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