通过从单个序列位置的分子建模的见解改善化学修饰siRNAs的功效预测
Evgenii Kliuchnikov1, Farkhad Maksudov1, Jeffrey Zuber2
1Department of Chemistry, University of Massachusetts, Lowell, MA 01854, USA.
Molecular therapy. Nucleic acids
|April 2, 2025
概括
化学修改小干扰RNA (siRNAs) 增强了它们的类似药物的特性. 通过建模和实验识别的特定修改改善了siRNA的功效和稳定性,用于合理的药物设计.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- 化学修饰增强了小干扰RNA (siRNA) 的稳定性和有效性.
- 鉴定最佳修改需要经验选,因为复杂的序列化学相互作用.
研究的目的:
- 结合实验和计算方法,以合理设计强大的,化学修饰的siRNAs.
- 了解化学修饰如何影响siRNA活动的分子基础.
主要方法:
- 集成的体外实验测量 (热力学稳定性,生物活性) 与化分子建模.
- 分析了修改与未修改siRNA复合体的结构,动态和能量特性.
- 利用机器学习将分子特性与生物活动相关联.
主要成果:
- 确定了影响siRNA生物活性的特定修饰模式.
- 分子建模揭示了导向链种子区域的2'-F修饰位置 (g2,g6) 的降低稳定能量和增加灵活性.
- 机器学习证实了这些特性与增强的生物活性之间的相关性.
结论:
- 在定义位置的特定化学修饰可以合理地增强siRNA功效.
- 对修饰效应的分子洞察力使得能够设计出具有改善药物样性质的强有力的siRNA.
- 这种方法有助于开发有效的基于RNA干扰的治疗方法.
更多相关视频
10:29Quantitative Structure-Activity Relationship, Activity Prediction, and Molecular Dynamics of Non-nucleotide Reverse Transcriptase Inhibitors
Published on: May 9, 2025
70
11:53Predicting Gene Silencing Through the Spatiotemporal Control of siRNA Release from Photo-responsive Polymeric Nanocarriers
Published on: July 21, 2017
7.2K
相关概念视频
siRNA - Small Interfering RNAs
16.3K
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
16.3K
Experimental RNAi
6.0K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
6.0K
Small interfering RNAs (siRNA)
3.4K
3.4K
RNA Interference
25.8K
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
25.8K
