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    • 5. 发明公开
    • DNA sequencing method and DNA sample preparation method
    • DNA测序及其制备方法
    • EP0767240A3
    • 1999-12-22
    • EP96114907.7
    • 1996-09-17
    • HITACHI, LTD.
    • Kambara, HidekiOkano, Kazunori
    • C12Q1/68
    • C12Q1/6869C12N15/1096C12Q2535/101C12Q2525/191C12Q2521/301
    • The DNA sequencing of the present invention comprises:
      (1) a step of digesting a sample DNA with a restriction enzyme to obtain a DNA fragment; (2) a step of introducing an oligonucleotide having a definite base sequence into the DNA fragment at the 3' terminus thereof; (3) a step of performing a complementary strand extension reaction, using a labeled primer which comprises a first base sequence portion complementary to at least a part of the base sequence of the oligonucleotide, a second base sequence portion complementary to the recognition base sequence recognized by the restriction enzyme and a third base sequence of a possible combination of 1 to 4 bases, by using, as a template, a single strand of the DNA fragment having the oligonucleotide introduced thereinto to obtain a labeled extended primer having a base sequence complementary to the single strand of the DNA fragment; (4) a step of proceeding:
      (a) a step of performing a sequencing reaction using the labeled primer by using, as a template, the single strand of the DNA fragment having the oligonucleotide introduced thereinto, and, (b) a step of performing a sequencing reaction using the extended labeled primer by using, as a template, a part of the single strand of the sample DNA having the base sequence of the single strand of the DNA fragment and a contiguous sequence adjacent thereto, or the single strand of the sample DNA; and, (5) a step of subjecting products of the sequencing reaction to electrophoresis to determine the base sequence of the DNA fragment and at least a part of the base sequence of the sample DNA adjacent to the base sequence of the DNA fragment.
    • 6. 发明公开
    • DNA sequencing method and DNA sample preparation method
    • DNS Sequenzierungs- und Vorbereitungsverfahren
    • EP0767240A2
    • 1997-04-09
    • EP96114907.7
    • 1996-09-17
    • HITACHI, LTD.
    • Kambara, HidekiOkano, Kazunori
    • C12Q1/68
    • C12Q1/6869C12N15/1096C12Q2535/101C12Q2525/191C12Q2521/301
    • The DNA sequencing of the present invention comprises:

      (1) a step of digesting a sample DNA with a restriction enzyme to obtain a DNA fragment;
      (2) a step of introducing an oligonucleotide having a definite base sequence into the DNA fragment at the 3' terminus thereof;
      (3) a step of performing a complementary strand extension reaction, using a labeled primer which comprises a first base sequence portion complementary to at least a part of the base sequence of the oligonucleotide, a second base sequence portion complementary to the recognition base sequence recognized by the restriction enzyme and a third base sequence of a possible combination of 1 to 4 bases, by using, as a template, a single strand of the DNA fragment having the oligonucleotide introduced thereinto to obtain a labeled extended primer having a base sequence complementary to the single strand of the DNA fragment;
      (4) a step of proceeding:

      (a) a step of performing a sequencing reaction using the labeled primer by using, as a template, the single strand of the DNA fragment having the oligonucleotide introduced thereinto, and,
      (b) a step of performing a sequencing reaction using the extended labeled primer by using, as a template, a part of the single strand of the sample DNA having the base sequence of the single strand of the DNA fragment and a contiguous sequence adjacent thereto, or the single strand of the sample DNA; and,

      (5) a step of subjecting products of the sequencing reaction to electrophoresis to determine the base sequence of the DNA fragment and at least a part of the base sequence of the sample DNA adjacent to the base sequence of the DNA fragment.
    • 本发明的DNA测序包括:(1)用限制酶消化样品DNA以获得DNA片段的步骤; (2)将具有确定碱基序列的寡核苷酸引入其3'末端的DNA片段的步骤; (3)使用包含与寡核苷酸的碱基序列的至少一部分互补的第一碱基序列部分的标记引物进行互补链延伸反应的步骤,与识别的识别碱基序列互补的第二碱基序列部分 通过限制性内切酶和1〜4个碱基的可能组合的第3碱基序列,通过使用引入寡核苷酸的DNA片段的单链作为模板,得到具有与 DNA片段的单链; (4)进行以下步骤:(a)通过使用引入了寡核苷酸的DNA片段的单链作为模板,使用标记引物进行测序反应的步骤,(b)步骤 使用延伸的标记引物进行测序反应,通过使用具有DNA片段的单链的碱基序列和与其相邻的连续序列的样品DNA的单链的一部分作为模板,或单链的 样品DNA; 和(5)使测序反应产物进行电泳以确定DNA片段的碱基序列和与DNA片段的碱基序列相邻的样品DNA的至少一部分碱基序列的步骤。
    • 7. 发明公开
    • Gene-detecting method
    • 基因检测方法
    • EP0578138A2
    • 1994-01-12
    • EP93110550.6
    • 1993-07-01
    • HITACHI, LTD.
    • Kambara, HidekiOkano, KazunoriMurakawa, Katsuji
    • C12Q1/68
    • C12Q1/682C12Q1/6823C12Q2537/157C12Q2521/319C12Q2537/155
    • A fluorescence-labelled DNA probe 11 is hybridized with a specimen 7 to form 9 double-stranded hybrid 8; successive decomposition and separation of the hybridized DNA probe with the aid of an enzyme specifically decomposing the double-stranded hybrid 8 are repeated to high speed-decompose the DNA probe alone hybridized to the specimen DNA; and after a shortened DNA probe is amplification-produced in this way, the shortened DNA probe 20 and unreacted DNA probe 21 are separately discriminated and detected to detect the specimen DNA 7 with high sensitivity. The shortened DNA probe can be produced in amounts which are larger by several figures than the amount of the specimen DNA in several minutes and without raising and lowering the reaction temperature, so that the specimen DNA can be detected rapidly.
    • 荧光标记的DNA探针11与样本7杂交以形成9个双链杂合体8; 重复高速分析杂交DNA探针,借助于特异性分解双链杂交物8的酶,高速分解单独的与探针DNA杂交的DNA探针; 用这种方法扩增产生缩短的DNA探针后,分别缩短DNA探针20和未反应的DNA探针21并进行检测,以高灵敏度检测样本DNA 7。 缩短了的DNA探针的生成量可以比试样DNA的数分钟大几个数量级,而且不会升高和降低反应温度,因此可以快速检测样本DNA。