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    • 59. 发明申请
    • ALLELE-SPECIFIC RNA INTERFERENCE
    • ALLELE特异性RNA干扰
    • WO2007044362A2
    • 2007-04-19
    • PCT/US2006/038704
    • 2006-10-02
    • UNIVERSITY OF MASSACHUSETTSXU, Zuoshang
    • XU, Zuoshang
    • A61K48/00C07H21/02C07H21/04
    • C12N15/1137A61K38/00A61K48/00C12N15/111C12N2310/111C12N2310/14C12N2310/333C12N2310/336C12N2310/53C12N2320/51C12Y115/01001
    • Human diseases caused by dominant, gain-of-function mutations develop in heterozygotes bearing one mutant and one wild-type copy of a gene. Because the wild- type gene often performs important functions, whereas the mutant gene is toxic, any therapeutic strategy must selectively inhibit the mutant while retaining wild-type gene expression. The present invention includes methods of specifically inhibiting the expression of a mutant allele, while preserving the expression of a co-expressed wild-type allele using RNAi, a therapeutic strategy for treating genetic disorders associated with dominant, gain-of-function gene mutations. The invention also includes small interfering RNAs (siRNAs) and small hairpin RNAs (shRNAs) that selectively suppress mutant, but not wild-type, expression of copper zinc superoxide dismutase (SODl), which causes inherited amyotrophic lateral sclerosis (ALS). The present invention further provides asysmmetric siRNAs and shRNAs with enhanced efficacy and specificity and mediating RNAi.
    • 由携带一个突变体和一个野生型基因拷贝的杂合子产生显性,功能获得性突变引起的人类疾病。 由于野生型基因经常执行重要功能,而突变基因是有毒的,所以任何治疗策略都必须选择性抑制突变体,同时保留野生型基因表达。 本发明包括特异性抑制突变等位基因表达的方法,同时使用RNAi保留共表达野生型等位基因的表达,所述治疗策略用于治疗与显性功能获得性基因突变相关的遗传疾病。 本发明还包括选择性抑制引起遗传性肌萎缩性侧索硬化症(ALS)的铜锌超氧化物歧化酶(SOD1)的突变而非野生型表达的小干扰RNA(siRNA)和小发夹RNA(shRNA)。 本发明进一步提供了具有增强的功效和特异性并介导RNAi的asysmmetric siRNA和shRNA。