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    • 8. 发明申请
    • REAGENTS, METHODS, AND LIBRARIES FOR GEL-FREE BEAD-BASED SEQUENCING
    • 用于无凝胶基序列测序的试剂,方法和图谱
    • WO2007121489A3
    • 2008-09-12
    • PCT/US2007066931
    • 2007-04-19
    • APPLERA CORPMCKERNAN KEVINBLANCHARD ALANCOSTA GINA
    • MCKERNAN KEVINBLANCHARD ALANCOSTA GINA
    • C12Q1/68
    • C12Q1/6837C12Q1/6869C12Q1/6874C12Q2535/10C12Q2565/501C12Q2533/107C12Q2531/137C12Q2537/1373
    • The present invention provides methods for determining a nucleic acid sequence by performing successive cycles of duplex extension along a single stranded template. The cycles comprise steps of extension, ligation, and, preferably, cleavage. In certain embodiments the methods make use of extension probes containing phosphorothiolate linkages and employ agents appropriate to cleave such linkages. In certain embodiments the methods make use of extension probes containing an abasic residue or a damaged base and employ agents appropriate to cleave linkages between a nucleoside and an abasic residue and/or agents appropriate to remove a damaged base from a nucleic acid. The invention provides methods of determining information about a sequence using at least two distinguishably labeled probe families. In certain embodiments the methods acquire less than 2 bits of information from each of a plurality of nucleotides in the template in each cycle. In certain embodiments the sequencing reactions are performed on templates attached to microparticles, which are immobilized in or on a semi-solid support or attached to a substrate. The invention further provides sets of labeled extension probes containing phosphorothiolate linkages or trigger residues that are suitable for use in the method. In addition, the invention includes performing multiple sequencing reactions on a single template by removing initializing oligonucleotides and extended strands and performing subsequent reactions using different initializing oligonucleotides. The invention further provides efficient methods for preparing templates, particularly for performing sequencing multiple different templates in parallel. The invention also provides methods for performing ligation and cleavage. The invention also provides new libraries of nucleic acid fragments containing paired tags, and methods of preparing microparticles having multiple different templates (e.g., containing paired tags) attached thereto and of sequencing the templates individually. The invention also provides automated sequencing systems, flow cells, image processing methods, and computer-readable media that store computer-executable instructions (e.g., to perform the image-processing methods) and/or sequence information. In certain embodiments the sequence information is stored in a database. The invention further provides blocking oligonucleotides and methods of use thereof to facilitate sequencing. Further provided are arrays comprising microparticles having templates attached thereto and attached to a substrate in the absence of a semi-solid medium and methods of sequencing the templates. The invention also provides arrays of nucleic acid colonies produced using microparticles to "imprint" templates on a semi-solid medium or substrate, and methods of sequencing thereof.
    • 本发明提供了通过沿着单链模板进行连续循环的双链延伸来确定核酸序列的方法。 循环包括延伸,连接和优选切割的步骤。 在某些实施方案中,所述方法利用含有硫代磷酸酯键的延伸探针,并使用适合切割这种连接的试剂。 在某些实施方案中,所述方法利用含有无碱基残基或受损碱基的延伸探针,并使用适于切割核苷和脱碱基残基之间的连接的试剂和/或适于从核酸中除去受损碱基的试剂。 本发明提供使用至少两个可区分标记的探针家族确定关于序列的信息的方法。 在某些实施方案中,该方法在每个周期中从模板中的多个核苷酸中的每一个获取少于2位的信息。 在某些实施方案中,测序反应在附着于微粒的模板上进行,所述模板固定在半固体支持物中或附着于基底上。 本发明进一步提供了包含适合用于该方法的硫代磷酸酯键或触发性残基的标记的延伸探针的集合。 此外,本发明包括通过除去初始化寡核苷酸和延伸的链并使用不同的初始化寡核苷酸进行后续反应,在单个模板上进行多个测序反应。 本发明还提供了用于制备模板的有效方法,特别是用于并行地进行多个不同模板的排序。 本发明还提供了进行连接和切割的方法。 本发明还提供了含有配对标签的核酸片段的新文库,以及制备具有多个不同模板(例如,含有配对标签)的微粒和分别对模板进行测序的方法。 本发明还提供自动排序系统,流动池,图像处理方法和存储计算机可执行指令(例如,执行图像处理方法)和/或序列信息的计算机可读介质。 在某些实施例中,序列信息存储在数据库中。 本发明还提供了阻断寡核苷酸及其使用方法以促进测序。 还提供了包含具有连接到其上的模板并且在不存在半固体培养基的情况下附着于底物的微粒的阵列和对模板进行测序的方法。 本发明还提供使用微粒在半固体培养基或底物上“印记”模板产生的核酸菌落阵列及其测序方法。