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    • 8. 发明申请
    • BLOCKING OLIGONUCLEOTIDES
    • 阻塞OLIGONUCLEOTIDES
    • WO2016190795A1
    • 2016-12-01
    • PCT/SE2016/050303
    • 2016-04-11
    • KRJUTSKOV, KaarelSALUMETS, AndresKERE, Juha
    • KRJUTSKOV, KaarelSALUMETS, AndresKERE, Juha
    • C12N15/113C12Q1/68
    • C12Q1/6848C12N15/1096C12N15/11C12N2310/34C12Q1/6844C12Q2521/107C12Q2537/163
    • A blocking oligonucleotide (10, 10A, 10A', 10A", 10B, 10C, 10D, 10E) comprises a 3'-end complementary sequence (13) complementary to a 3'-end sequence (23) of a globin mRNA molecule (20; 20A, 20B) and a poly-A complementary sequence (12) of at least one nucleotide complementary to at least a portion of a poly-A sequence (22) of the globin mRNA molecule (20, 20A, 20B). The blocking oligonucleotide (10, 10A, 10A', 10A", 10B, 10C, 10D, 10E) is capable of inhibiting binding of a reverse transcription anchored poly-T primer (30) to the globin mRNA molecule (20, 20A, 20B) and thereby significantly reducing synthesis of globin cDNA from globin mRNA molecules (20, 20A, 20B) present in a sample. This high reduction of globin cDNA by the blocking oligonucleotide (10, 10A, 10A', 10A", 10B, 10C, 10D, 10E) is achieved without any significant degradation of mRNA molecules present in the sample.
    • 封闭寡核苷酸(10,10A,10A',10A“,10B,10C,10D,10E)包含与球蛋白mRNA分子的3'末端序列(23)互补的3'末端互补序列(13) 20,20A,20B)和与所述珠蛋白mRNA分子(20,20A,20B)的poly-A序列(22)的至少一部分互补的至少一个核苷酸的多聚A互补序列(12)。 阻断寡核苷酸(10,10A,10A',10A“,10B,10C,10D,10E)能够抑制逆转录锚定多T引物(30)与球蛋白mRNA分子(20,20A,20B)的结合, 从而显着减少样品中存在的球蛋白mRNA分子(20,20A,20B)的珠蛋白cDNA的合成。 实现了通过阻断寡核苷酸(10,10A,10A',10A“,10B,10C,10D,10E)高效降低珠蛋白cDNA,而没有样品中存在的mRNA分子的任何显着降解。