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    • 3. 发明申请
    • COMPLEX MOLECULE INTERFERING THE EXPRESSION OF TARGET GENES AND ITS PREPARING METHODS
    • 复合分子干扰目标基因的表达及其制备方法
    • US20100317714A1
    • 2010-12-16
    • US12745322
    • 2008-11-28
    • Zhen XiZicai LiangLiqiang CaoJunbin ZhangJinyu Huang
    • Zhen XiZicai LiangLiqiang CaoJunbin ZhangJinyu Huang
    • A61K31/7088C07H21/02C07K2/00A61P7/00
    • C12N15/111C12N2310/14C12N2310/318C12N2310/532
    • The present invention provides a complex molecule interfering the expression of target genes and the methods for preparing the complex molecule, wherein the complex molecule contains two siRNA strands X1 and X2 having at least 80% complementarity, the 5′ end of X1 and 3′ end of X2 are linked through non-nucleic acid molecule L1, the 5′ end of X2 and 3′ end of X1 are linked through non-nucleic acid molecule L2. Since both 5′ and 3′ ends of two siRNA strands X1 and X2 of the complex molecule according to the present invention are linked through non-nucleic acid molecules, it is not easy to unwind and degraded for the siRNA strands, and therefore the chemical stability of siRNA and the remaining time in the blood are greatly improved. After being administered, the Dicer enzyme in the cells is utilized to release the locked siRNAs from the complex molecules, and after unwinding, the antisense strand of the siRNA is released from the double-stranded siRNA to inhibit the expression of the target genes.
    • 本发明提供了干扰靶基因表达的复合分子和制备复合分子的方法,其中复合分子含有两个具有至少80%互补性的siRNA链X1和X2,X1和3'末端的5'末端 的X2通过非核酸分子L1连接,X2的5'端和X1的3'末端通过非核酸分子L2连接。 由于根据本发明的复合分子的两个siRNA链X1和X2的5'和3'末端都通过非核酸分子连接,所以对于siRNA链来说不容易退化和降解,因此化学 siRNA的稳定性和血液中的剩余时间大大提高。 在施用后,细胞中的Dicer酶用于从复合分子中释放锁定的siRNA,并且在解开后,从双链siRNA释放siRNA的反义链以抑制靶基因的表达。
    • 9. 发明授权
    • Nucleotide and/or oligonucleotide and preparation process thereof
    • 核苷酸和/或寡核苷酸及其制备方法
    • US09567364B2
    • 2017-02-14
    • US13811295
    • 2011-07-20
    • Zhen XiZicai LiangJinyu Huang
    • Zhen XiZicai LiangJinyu Huang
    • C07H21/02C07H21/04C07H21/00C07H19/04C07H19/20C07H19/10C07H19/048C07H19/167
    • C07H21/02C07H19/10C07H19/167C07H19/20C07H21/04Y02P20/55
    • Nucleotide and/or oligonucleotide represented by formula (1) and the liquid phase synthesis process thereof. The present invention provides a liquid phase synthesis process for preparing a nucleotide and/or an oligonucleotide, comprising a process for combining the nucleotide and/or oligonucleotide protective groups, in which, under the condition that the 2′-hydroxyl group is protected by a group with a sterically hindered silane structure, the 3′ phosphate group(s) of the nucleotide and/or oligonucleotide is/are directly protected by (a)β-cyanoethyl group(s), and after the β-cyanoethyl group(s) is/are removed, the resulting product can directly participate in the next cycle of synthesis, wherein the synthesis reaction is carried out in a reaction flask or reaction kettle, without being limited by a solid carrier or synthesizer, so that the large scale preparation of oligonucleotides can be achieved.
    • 由式(1)表示的核苷酸和/或寡核苷酸及其液相合成方法。 本发明提供了制备核苷酸和/或寡核苷酸的液相合成方法,包括将核苷酸和/或寡核苷酸保护基组合的方法,其中在2'-羟基被 具有空间位阻硅烷结构的基团,核苷酸和/或寡核苷酸的3'磷酸基团被(a)2-氰基乙基直接保护,并且在2-氰基乙基之后, 所得产物可以直接参与下一个合成循环,其中合成反应在反应烧瓶或反应釜中进行,而不受固体载体或合成仪的限制,从而大规模制备 可以实现寡核苷酸。
    • 10. 发明申请
    • NUCLEOTIDE AND/OR OLIGONUCLEOTIDE AND PREPARATION PROCESS THEREOF
    • 核苷酸和/或寡核苷酸及其制备方法
    • US20130123482A1
    • 2013-05-16
    • US13811295
    • 2011-07-20
    • Zhen XiZicai LiangJinyu Huang
    • Zhen XiZicai LiangJinyu Huang
    • C07H21/02C07H21/04
    • C07H21/02C07H19/10C07H19/167C07H19/20C07H21/04Y02P20/55
    • Nucleotide and/or oligonucleotide represented by formula (1) and the liquid phase synthesis process thereof. The present invention provides a liquid phase synthesis process for preparing a nucleotide and/or an oligonucleotide, comprising a process for combining the nucleotide and/or oligonucleotide protective groups, in which, under the condition that the 2′-hydroxyl group is protected by a group with a sterically hindered silane structure, the 3′ phosphate group(s) of the nucleotide and/or oligonucleotide is/are directly protected by (a)β-cyanoethyl group(s), and after the β-cyanoethyl group(s) is/are removed, the resulting product can directly participate in the next cycle of synthesis, wherein the synthesis reaction is carried out in a reaction flask or reaction kettle, without being limited by a solid carrier or synthesizer, so that the large scale preparation of oligonucleotides can be achieved.
    • 由式(1)表示的核苷酸和/或寡核苷酸及其液相合成方法。 本发明提供了制备核苷酸和/或寡核苷酸的液相合成方法,包括将核苷酸和/或寡核苷酸保护基组合的方法,其中在2'-羟基被 具有空间位阻硅烷结构的基团,核苷酸和/或寡核苷酸的3'磷酸基团被(a)β-氰基乙基直接保护,并且在β-氰基乙基之后, 所得产物可以直接参与下一个合成循环,其中合成反应在反应烧瓶或反应釜中进行,而不受固体载体或合成仪的限制,从而大规模制备 可以实现寡核苷酸。