Oligomeric compounds including oligoribonucleotides and oligoribonucleosides are provided that have subsequences of 2'-pentoribofuranosyl nucleosides that activate dsRNase. The oligoribonucleotides and oligoribonucleosides can include substituent groups for increasing binding affinity to complementary nucleic acid strand as well as substituent groups for increasing nuclease resistance. The oligomeric compounds are useful for diagnostics and other research purposes, for modulating the expression of a protein in organisms, and for the diagnosis, detection and treatment of other conditions susceptible to oligonucleotide therapeutics. Also included in the invention are mammalian ribonucleases, i.e., enzymes that degrade RNA, and substrates for such ribonucleases. Such ribonuclease is referred to herein as a dsRNase, wherein "ds" indicates the RNase's specificity for certain double-stranded RNA substrates. The artificial substrates for the dsRNases described herein are useful in preparing affinity matrices for purifying mammalian ribonuclease as well as non-degradative RNA-binding proteins.
提供了包括寡聚核苷酸和寡聚核苷在内的寡聚化合物,这些化合物具有激活 dsRNase 的 2'-pentoribofuranosyl 核苷的子序列。寡聚核苷酸和寡聚核苷可以包括增加与互补核酸链结合亲和力的取代基团以及增加
核酸酶抗性的取代基团。寡聚化合物可用于诊断和其他研究目的,调节
生物体内蛋白质的表达,以及诊断、检测和治疗易受寡核苷酸疗法影响的其他病症。本发明还包括哺乳动物
核糖核酸酶,即降解 RNA 的酶,以及这种
核糖核酸酶的底物。这种
核糖核酸酶在本文中称为 dsRNase,其中 "ds "表示 RNase 对某些双链 RNA 底物的特异性。本文所述的 dsRNase 人工底物可用于制备亲和基质,以纯化哺乳动物
核糖核酸酶以及非降解 RNA 结合蛋白。