跨界干扰抑制剂对RNAi和昆虫细胞中细菌病毒表达系统的影响
Hao Zheng1, Hengfeng Zhao1, Haifan Xiong1
1Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding & Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, China.
Insects
|June 26, 2024
概括
来自植物和哺乳动物病毒的RNA沉默病毒抑制剂 (VSRs) 有效抑制昆虫细胞RNA干扰. 早期的VSR表达和dsRNA结合抑制显示出对昆虫细胞系统的最显著益处.
科学领域:
- 分子生物学分子生物学
- 病毒学 病毒学
- 昆虫细胞生物学 昆虫细胞生物学
背景情况:
- RNA干扰 (RNAi) 是一个关键的宿主防御机制.
- 众所周知,来自病毒的RNA干扰抑制剂可以抵消宿主RNAi.
- 病毒RNAi抑制剂对昆虫细胞的影响在很大程度上尚未被探索.
研究的目的:
- 研究病毒RNA干扰抑制剂对昆虫细胞RNAi的影响.
- 评估不同干扰抑制机制和表达时间的有效性.
- 探索昆虫细胞表达系统中的潜在应用.
主要方法:
- 对三种不同的病毒RNA干扰抑制剂 (来自植物和哺乳动物病毒) 的查.
- 系统地研究抑制剂对昆虫细胞循环和baculovirus感染的影响.
- 对亡速率,基因调节,外源蛋白表达和复合病毒生产的分析.
- 早期与晚期VSR表达的比较以及不同的抑制机制 (例如,dsrna结合).
主要成果:
- 病毒抑制RNA沉默剂 (VSRs) 在昆虫细胞中显著减弱RNAi.
- 观察到的效应包括减少了亡,改变了基因调节,增强了外源蛋白的表达,并改善了复合病毒的产生.
- 早期VSR表达比晚期表达更有效.
- 与其他机制相比,dsrna结合抑制显示出更明显的效果.
结论:
- 植物和哺乳动物病毒衍生的VSR可以增强昆虫细胞的防御机制.
- 这些VSR显示了改善昆虫细胞表达系统和扩大转化范围的潜力.
- 这些发现为利用病毒抑制剂操纵昆虫细胞RNAi通路提供了新的见解.
相关概念视频
Experimental RNAi
6.1K
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...
6.1K
siRNA - Small Interfering RNAs
16.7K
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...
16.7K


