会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Method of synthesizing cDNA
    • cDNA合成方法
    • US08067205B2
    • 2011-11-29
    • US10550788
    • 2004-03-29
    • Seishi KatoTomoko KimuraKuniyo Ohtoko
    • Seishi KatoTomoko KimuraKuniyo Ohtoko
    • C12P19/34
    • C12N15/1096
    • A method for synthesizing cDNA possessing a consecutive sequence starting with a nucleotide adjacent to a cap structure of mRNA, which comprises (i) a process for annealing a double-stranded DNA primer and an RNA mixture containing mRNA possessing a cap structure, (ii) a process for preparing a conjugate of an mRNA/cDNA heteroduplex and a double-stranded DNA primer by synthesizing the first-strand cDNA primed with the double-stranded DNA primer using reverse transcriptase, and (iii) a process for circularizing the conjugate of the mRNA/cDNA heteroduplex and the double-stranded DNA primer by joining the 3′ and 5′ ends of the DNA strand containing cDNA using ligase. This method enables us to efficiently synthesize a full-length cDNA possessing a consecutive sequence starting with a transcription-start-site nucleotide from a small amount of RNA by small processes.
    • 一种合成cDNA的方法,该方法具有从与mRNA结构相邻的核苷酸开始的连续序列,其包括(i)退火双链DNA引物的方法和含有具有帽结构的mRNA的RNA混合物,(ii) 通过使用逆转录酶合成用双链DNA引物引发的第一链cDNA来制备mRNA / cDNA异源双链和双链DNA引物的缀合物的方法,和(iii)使 通过使用连接酶连接含有cDNA的DNA链的3'和5'末端,mRNA / cDNA异源双链和双链DNA引物。 该方法使得我们能够通过小过程有效地合成具有从少量RNA转录起始位点核苷酸开始的连续序列的全长cDNA。
    • 4. 发明授权
    • Process for producing cDNAs with complete length, process for producing
intermediates thereof and process for producing vectors containing
cDNAs with complete lengths
    • 用于生产具有完整长度的cDNA的方法,其制备中间体的方法和用于生产含有完整长度的cDNA的载体的方法
    • US5597713A
    • 1997-01-28
    • US244188
    • 1994-07-25
    • Seishi KatoShingo Sekine
    • Seishi KatoShingo Sekine
    • C12N15/09C12N15/10C12N15/66C12N15/11C12N15/64C12P19/34
    • C12N15/1096C12N15/66
    • A process for providing cDNAs containing full primary structure information of proteins by selectively synthesizing full-length cDNAs containing sequences starting from the capped region of mRNAs is disclosed. The invention provides a process for producing an intermediate for the synthesis of a full-length cDNA, which comprises the steps of treating mRNA extracted from cells to eliminate the phosphate group from the 5' end of an uncapped degraded mRNA; decapping from the 5' end of a capped intact mRNA; and ligating either a DNA oligonucleotide or a DNA-RNA chimeric oligonucleotide represented by the following general formula [I] to the 5' end phosphate group formed in the above step by the action of T4 RNA ligase, thereby selectively adding either the DNA oligonucleotide or the DNA-RNA chimeric oligonucleotide having an arbitrary sequence to the 5' end of the intact mRNA.5'-dN1-dN2- . . . -dNm-N1-N2- . . . -Nn-3' [I]The present invention also provides a process for synthesizing a full-length cDNA, which comprises linking a double-stranded DNA primer having a dT tail by annealing to a poly(A) tail of the 3' end of the intact mRNA having the DNA oligonucleotide or the DNA-RNA chimeric nucleotide added at the 5' end produced by the above-mentioned process, and then synthesizing the first strand cDNA complementary to the intact mRNA by a reverse transcriptase.
    • PCT No.PCT / JP93 / 01359 Sec。 371日期:1994年7月25日 102(e)日期1994年7月25日PCT提交1993年9月22日PCT公布。 第WO94 / 08001号公报 日期1994年04月14日公开了通过选择性地合成含有从mRNA封端区开始的序列的全长cDNA提供含有蛋白质全部一级结构信息的cDNA的方法。 本发明提供了一种制备用于合成全长cDNA的中间体的方法,其包括以下步骤:处理从细胞中提取的mRNA,以从未封端的降解的mRNA的5'末端消除磷酸基团; 从覆盖的完整mRNA的5'端开始切割; 并通过T4 RNA连接酶的作用将由以下通式[I]表示的DNA寡核苷酸或DNA-RNA嵌合寡核苷酸与上述步骤中形成的5'端磷酸基结合,从而选择性地添加DNA寡核苷酸或 具有与完整mRNA的5'末端任意序列的DNA-RNA嵌合寡核苷酸。 5'-dN1-dN2-。 。 。 -dNm-N1-N2-。 。 。 -Nn-3'[I]本发明还提供了一种合成全长cDNA的方法,其包括将具有dT尾的双链DNA引物与3'端的poly(A)末端退火连接 的具有通过上述方法制备的5'端加入的DNA寡核苷酸或DNA-RNA嵌合核苷酸的完整mRNA,然后通过逆转录酶合成与完整mRNA互补的第一链cDNA。
    • 6. 发明申请
    • Method of synthesizing cdna
    • cdna合成方法
    • US20060246453A1
    • 2006-11-02
    • US10550788
    • 2004-03-29
    • Seishi KatoTomoko KimuraKuniyo Ohtoko
    • Seishi KatoTomoko KimuraKuniyo Ohtoko
    • C40B30/06C12Q1/68C07H21/02C07H21/04C12P19/34
    • C12N15/1096
    • A method for synthesizing cDNA possessing a consecutive sequence starting with a nucleotide adjacent to a cap structure of mRNA, which comprises (i) a process for annealing a double-stranded DNA primer and an RNA mixture containing mRNA possessing a cap structure, (ii) a process for preparing a conjugate of an mRNA/cDNA heteroduplex and a double-stranded DNA primer by synthesizing the first-strand cDNA primed with the double-stranded DNA primer using reverse transcriptase, and (iii) a process for circularizing the conjugate of the mRNA/cDNA heteroduplex and the double-stranded DNA primer by joining the 3′ and 5′ ends of the DNA strand containing cDNA using ligase. This method enables us to efficiently synthesize a full-length cDNA possessing a consecutive sequence starting with a transcription-start-site nucleotide from a small amount of RNA by small processes.
    • 一种合成cDNA的方法,该方法具有从与mRNA结构相邻的核苷酸开始的连续序列,其包括(i)退火双链DNA引物的方法和含有具有帽结构的mRNA的RNA混合物,(ii) 通过使用逆转录酶合成用双链DNA引物引发的第一链cDNA来制备mRNA / cDNA异源双链和双链DNA引物的缀合物的方法,和(iii)使 通过使用连接酶连接含有cDNA的DNA链的3'和5'末端,mRNA / cDNA异源双链和双链DNA引物。 该方法使得我们能够通过小过程有效地合成具有从少量RNA转录起始位点核苷酸开始的连续序列的全长cDNA。
    • 10. 发明授权
    • Cloning vector plasmid vector-primer derived therefrom and preparation
method of the same
    • 来源于其的克隆载体质粒载体引物及其制备方法
    • US5624826A
    • 1997-04-29
    • US466111
    • 1995-06-06
    • Seishi KatoTakashi AokiYuri Umezawa
    • Seishi KatoTakashi AokiYuri Umezawa
    • C12N15/00C07K14/525C12N15/09C12N15/10C12N15/70C12N15/85C12N15/64
    • C12N15/1096C07K14/525C12N15/85C12N2800/108
    • Disclosed is a cloning vector plasmid suitable for preparing cDNA banks. The cloning vector plasmid of the present invention comprises, in the order mentioned from upstream to downstream region unless otherwise specified, a promoter PR1 acting in mammalian cells; an unique restriction enzyme site RE1 rarely existing in eukaryotic DNA and a promoter PR2 of RNA polymerase; an unique restriction enzyme site RE2 generating 3'-protruding dG tail; an unique arbitrary restriction enzyme site RE3; an unique arbitrary restriction enzyme site RE4 generating 3'-protruding terminus; an unique restriction enzyme site RE5 rarely existing in eukaryotic DNA and a promoter PR3 of RNA polymerase; and at least one kind of arbitrary restriction enzyme site RE6 generating 3'-protruding terminus existing at the arbitrary position before the restriction site RE1; and further, at arbitrary positions other than the above-described restriction enzyme sites and promoters, an origin OR1 for replication in mammalian cells, an origin OR2 for replication of a single-stranded phage, an origin OR3 for replication in E. coli, and a selective marker.
    • 公开了适用于制备cDNA库的克隆载体质粒。 除非另有说明,本发明的克隆载体质粒以上游至下游区域的顺序包含在哺乳动物细胞中起作用的启动子PR1; 在真核DNA中很少存在的独特的限制酶位点RE1和RNA聚合酶的启动子PR2; 独特的限制酶位点RE2产生3'突出的dG尾巴; 独特的任意限制酶位点RE3; 独特的任意限制酶位点RE4产生3'突出的末端; 在真核DNA中很少存在一个独特的限制酶位点RE5和RNA聚合酶的启动子PR3; 以及存在于限制性位点RE1前的任意位置的产生3'突出末端的至少一种任意限制酶位点RE6; 此外,在除了上述限制酶位点和启动子之外的任意位置,用于在哺乳动物细胞中复制的起始OR1,用于复制单链噬菌体的起点OR2,用于在大肠杆菌中复制的起始OR3,以及 选择性标记。