

赛默飞世尔Dharmacon® RNAi和Pierce® 蛋白检测专题讲座 |
| 来源:生物通 作者:无 发布时间:2008-03-04 |
会展日期: 2008-08-17 至 2008-08-19 题目2: Western Blotting的问题与对策 时间和地点: 上海地区:2008-3-18 星期二 上午9:30-11:30 北京地区:2008-3-19 星期三 上午9:30-11:30 主办:赛默飞世尔科技•生命科学部 (010-80499033) 讲座结束后有精美礼品赠送
Abstract: siRNA-mediated RNA interference (RNAi) has become a key tool in functional genomics. In this presentation, we will describe how a combination of (1) the first siRNA design algorithm, (2) pooling strategy, and (3) unique chemical modifications ensures high potency of chemically synthesized siRNAs. We will demonstrate how sequence alignment algorithms (e.g.BLAST and Smith-Waterman) have limited ability to accurately filter siRNAs with potential off-target effects. Moreover, we will show that a primary source of off-target effects is derived from the “seed” region (nucleotides 2-8) of the siRNA’s antisense (guide) strand recognizing the 3’-UTR of an unintended target, resulting in silencing via a microRNA-like mechanism. Finally, we will present strategies that significantly reduce sequence-associated off-targets thus minimizing the incidence of false phenotypes. The experimental approaches derived from these studies are expected to dramatically improve the quality and reliability of RNAi applications. Topics presented in this seminar: |
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