掷骰子
小干扰RNA
基因沉默
生物
反式siRNA
荧光素酶
竞赛(生物学)
细胞生物学
阿尔戈瑙特
RNA诱导沉默复合物
RNA干扰
核糖核酸
分子生物学
转染
遗传学
基因
生态学
作者
Marcel Tanudji,Dorothy A Machalek,Greg M. Arndt,Laurent P. Rivory
出处
期刊:Oligonucleotides
[Mary Ann Liebert]
日期:2010-02-01
卷期号:20 (1): 27-32
被引量:21
标识
DOI:10.1089/oli.2009.0195
摘要
Cotransfection of a mixture of siRNAs species is typically used when simultaneous targeting of more than one mRNA is required. However, competition between siRNAs could occur and reduce the activity of some siRNAs within the mixture. To further study the factors affecting the degree of competition between siRNAs, we cotransfected luciferase targeting siRNAs with various irrelevant (ie, nonluciferase targeting) siRNAs into cells and examined differences in their competition profiles by assessing the effect on luciferase expression. We show that the degree of competition varies between irrelevant siRNAs and occurs at the point of RISC loading. Although the competition profile appears to be related to the calculated RNA-induced silencing complex (RISC) loading potential, empirical testing is required to confirm the competitive effects. We also observed reduced competition with siRNAs in the Dicer-substrate format, presumably due to more efficient RISC loading as a consequence of the physical transfer of the processed siRNA from Dicer.
科研通智能强力驱动
Strongly Powered by AbleSci AI