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Improved In Vivo Metabolic Stability and Silencing Efficacy of siRNAs with Phosphorothioate Linkage-Free, GalNAc-Conjugated Sense Strands Containing Morpholino-LNA Modifications
Organic Letters ( IF 4.9 ) Pub Date : 2024-11-11 , DOI: 10.1021/acs.orglett.4c02903 Dhrubajyoti Datta, Pawan Kumar, Jayanta Kundu, June Qin, Jason A. Gilbert, Sally Schofield, Daniel P. Donnelly, Ju Liu, Rohan Degaonkar, Martin Egli, Muthiah Manoharan
Organic Letters ( IF 4.9 ) Pub Date : 2024-11-11 , DOI: 10.1021/acs.orglett.4c02903 Dhrubajyoti Datta, Pawan Kumar, Jayanta Kundu, June Qin, Jason A. Gilbert, Sally Schofield, Daniel P. Donnelly, Ju Liu, Rohan Degaonkar, Martin Egli, Muthiah Manoharan
To ensure specificity, loading of the sense strand of small interfering RNAs (siRNAs) into RISC must be inhibited. We show here that siRNAs with 5′- and 6′-morpholino LNA residues or 6′-OH-LNA at the 5′ terminus of a fully phosphodiester sense strand resulted in metabolically stable siRNAs with a potency and a duration of action in mice that were greater than those of an siRNA in which the 5′ terminus of the sense strand has two terminal phosphorothioate linkages and regular LNA.
中文翻译:
提高含有吗啉代-LNA 修饰的无硫代磷酸酯键、GalNAc 偶联正义链的 siRNA 的体内代谢稳定性和沉默功效
为确保特异性,必须抑制小干扰 RNA (siRNA) 的正义链加载到 RISC 中。我们在这里表明,在完全磷酸二酯正义链的 5' 末端具有 5' 和 6'-吗啉代 LNA 残基或 6'-OH-LNA 的 siRNA 导致代谢稳定的 siRNA,其效力和作用持续时间在小鼠中大于 siRNA,其中正义链的 5' 末端具有两个末端硫代磷酸盐键和常规 LNA。
更新日期:2024-11-11
中文翻译:
提高含有吗啉代-LNA 修饰的无硫代磷酸酯键、GalNAc 偶联正义链的 siRNA 的体内代谢稳定性和沉默功效
为确保特异性,必须抑制小干扰 RNA (siRNA) 的正义链加载到 RISC 中。我们在这里表明,在完全磷酸二酯正义链的 5' 末端具有 5' 和 6'-吗啉代 LNA 残基或 6'-OH-LNA 的 siRNA 导致代谢稳定的 siRNA,其效力和作用持续时间在小鼠中大于 siRNA,其中正义链的 5' 末端具有两个末端硫代磷酸盐键和常规 LNA。