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    • 3. 发明专利
    • EXTRACTION AND PURIFICATION OF PLASMID DNA
    • JPH09327290A
    • 1997-12-22
    • JP14912796
    • 1996-06-11
    • TOYO BOSEKI
    • ISHIDA YOSHIKAZUIKEDA KATSUNORIKAMIMURA HIDEKIKAWAKAMI FUMIKIYOKAWAMURA YOSHIHISA
    • C12N15/09C07H1/08C07H21/04C12Q1/68
    • PROBLEM TO BE SOLVED: To purify the subject DNA in a high purity for a short time by adding a cytolytic liquid containing a chaotropic substance, an organic solvent and a nucleic acid-bonding solid-phase carrier to a microorganism or a cell containing a plasmid DNA, washing the resultant solid-phase carrier adsorbing the plasmid DNA thereon and then treating the washed solid-phase carrier with an eluent. SOLUTION: A cytolytic liquid at pH 3-6 containing a chaotropic substance comprising a guanidine thiocyanate and sodium acetate-hydrochloric acid, etc., an extracting liquid comprising an organic solvent, etc., such as a buffer solution-saturated phenol and a nucleic acid-bonding solid-phase carrier comprising particles, etc., containing a superparamagnetic metallic oxide are added, mixed or brought into contact with a microorganism or a cell holding a plasmid DNA to adsorb the plasmid DNA on the solid-phase carrier. The solid-phase carrier adsorbing the plasmid DNA thereon is then washed with a wash liquid and the plasmid DNA is eluted from the washed solid-phase carrier with an eluent to thereby extract and purify the plasmid DNA from the microorganism or cell in high purity for a short time without requiring complicated operations.
    • 4. 发明专利
    • ANALYSIS METHOD BY LABELED PROBE
    • JP2000019171A
    • 2000-01-21
    • JP18485298
    • 1998-06-30
    • MATSUMOTO KAZUKOTOYO BOSEKI
    • MATSUI KAZUHIROIKEDA KATSUNORITEJIMA SHINICHIKAWAMURA YOSHIHISAMATSUMOTO KAZUKO
    • G01N33/50C12N15/09C12Q1/68G01N33/533G01N33/58
    • PROBLEM TO BE SOLVED: To make an object substance measurable with high sensitivity by bonding a labeled body expressed by a specific formula, to a probe of nucleic acid or the like through a cross-linking group or the like so as to react with the object substance on an organismic sample, then adding a heavy metal to obtain a complex, and measuring the fluorescence of the complex. SOLUTION: The labeled body is expressed by formula I or formula II, in which (A1-A3 are each an aromatic group; R1-R3 are each : hydrogen atom or -COCH2COCnF2n+1; (n) is an integer of 1-6). This labeled body is bonded to a probe through a cross-linking group, or a cross-linking group and a linking group to obtain a labeled probe. The probe is selected from a group comprising nucleic acid, nucleic acid bonded protein, low molecular weight ligand and ligand receptor. The object substance is an analysis object component in an organismic sample, and nucleic acid, nucleic acid bonded protein, ligand or ligand receptor is preferable. The organismic sample is dipped in a buffer solution containing this labeled probe and incubated to react the labeled probe with the object substance, and further dipped in a buffer solution containing lanthanoid metal ion after washing, and the fluorescence of a produced fluorescent complex is measured.
    • 5. 发明专利
    • ELECTROPHORESIS METHOD AND SUPPORT BODY FOR ELECTROPHORESIS
    • JPH1038847A
    • 1998-02-13
    • JP19226196
    • 1996-07-22
    • TOYO BOSEKI
    • IKEDA KATSUNORIISHIDA YOSHIKAZUKAMIMURA HIDEKI
    • G01N27/447
    • PROBLEM TO BE SOLVED: To make electrophoresis simply and speedily by diluting an electrophoresis support body adjusted at a concentration higher than during electrophoresis during electrophoresis and using the body. SOLUTION: As an electrophoresis support body, agar or agarose is highly refined, is heated and dissolved in a buffer solution component, is cooled, and gelled. The buffer solution component is composed of a component having a buffering capability, a pH formulation substance, and a nuclear acid dissolving and restricting component. Upon formulation of the support body, at least approx. 2% of agar or agarose is suspended in the buffer solution, the suspension solution is heated and dissolved at approx. 121 deg.C for approx. 10 minutes by using a high-pressure sterilization device, gel solution of its high concentration of approx. 2 to 5% is automatically formulated, and is gelled in a specified amount of volume, making it possible to be stored. This high-concentration gel block can be easily dissolved by adding water only during use and has its supperior operability and safety.