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相关概念视频

RNA Interference01:23

RNA Interference

26.4K
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...
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Experimental RNAi02:15

Experimental RNAi

6.2K
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...
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siRNA - Small Interfering RNAs02:30

siRNA - Small Interfering RNAs

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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...
17.0K
Viruses with RNA Genomes01:29

Viruses with RNA Genomes

119
RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
119
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

917
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
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The Antiviral System of Bacteria and Archaea: CRISPR01:23

The Antiviral System of Bacteria and Archaea: CRISPR

124
CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats is a adaptive immune system found in bacteria and archaea that protects against viral infections. This system enables prokaryotic cells to identify, remember, and neutralize foreign genetic elements, primarily bacteriophages, by storing fragments of the invader’s DNA as a genetic memory.The CRISPR immune response begins during an initial infection. Cas (CRISPR-associated) proteins play a central role in this...
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相关实验视频

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High-throughput Screening for Broad-spectrum Chemical Inhibitors of RNA Viruses
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基于RNAi的抗病毒免疫力

De-Yu Xu1,2, Xi Zhou1,2, Yu-Jie Ren2

  • 1School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China，Hefei 230027, China.

Yi chuan = Hereditas
|August 17, 2025
PubMed
概括
此摘要是机器生成的。

RNA干扰 (RNAi) 是一种天然的抗病毒防御机制,它使用小RNA来使病毒基因沉默. 针对RNAi的病毒抑制剂 (VSRs) 可以恢复这种防御,用于强大的抗病毒疗法.

关键词:
这是VSR的VSR.这是一种抗病毒药物.这是一个小RNARNA.siRNA 是一个RNA.

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Evaluation of the Efficacy And Toxicity of RNAs Targeting HIV-1 Production for Use in Gene or Drug Therapy
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科学领域:

  • 分子生物学分子生物学
  • 免疫学 免疫学 免疫学
  • 病毒学 病毒学

背景情况:

  • RNA干扰 (RNAi) 是一种利用小RNAs保护的基因沉默机制.
  • 在病毒感染期间,宿主细胞产生病毒衍生的小干扰RNA (vsiRNAs),通过RNAi来降解病毒RNA.
  • RNAi作为一种关键的抗病毒免疫路径,但病毒进化病毒抑制RNAi (VSRs) 来逃避它.

研究的目的:

  • 审查RNAi在抗病毒免疫中的机制.
  • 总结一下基于RNAi的抗病毒策略的最新研究进展.
  • 在病毒感染中探索向VSRs和microRNAs (miRNAs) 的治疗应用.

主要方法:

  • 文献综述总结了对病毒感染中的RNAi,VSR和miRNA的现有研究.
  • 对抗RNAi的病毒对抗防御机制的分析.
  • 讨论针对VSR和宿主/病毒miRNA的治疗策略.

主要成果:

  • 病毒使用VSR来对抗RNAi路径,抑制抗病毒防御.
  • 向VSR可以重新激活RNAi,提供强大和广泛的抗病毒活性.
  • 主体和病毒miRNA在病毒感染中也起着调节作用,呈现出额外的治疗点.

结论:

  • RNAi是一种重要的抗病毒防御机制,可以用于治疗.
  • 开发抑制VSRs的药物是抗病毒疗法的有希望的策略.
  • 对miRNA介导的病毒感染调节的进一步研究可能会导致新的治疗方法.