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相关概念视频

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.
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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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The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
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Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be...
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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.
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Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
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可编程的单链循环反义寡核酸,用于多目标基因治疗.

Yufan Pan1, Xin Li1, Chenyou Zhu1

  • 1Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.

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概括
此摘要是机器生成的。

循环反感性寡核酸 (circASOs) 为基因疗法提供了一种新的方法,增强稳定性并使多个基因同时沉默以提高治疗效果.

关键词:
反感的寡核化物.化学修饰是一种化学修饰.圆形的 DNA 圆形的 DNA基因调节 基因调节 基因调节多目标疗法多目标疗法

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科学领域:

  • 分子生物学分子生物学
  • 基因治疗 基因治疗
  • 核酸治疗药物 核酸治疗药物

背景情况:

  • 反感性寡核酸 (ASOs) 对治疗疾病有前途,但在稳定性和输送方面面临挑战.
  • 结合性ASO疗法可以提高治疗疗效.
  • 目前的ASO疗法需要进行化学修改以提高稳定性和功能.

研究的目的:

  • 引入单链循环ASOs (circASOs) 作为一种用于基因沉默的新平台.
  • 评估circASOs对多个基因的辅助沉默的疗效和稳定性.
  • 探索circasos在开发多功能核酸药物的潜力.

主要方法:

  • 设计和合成单链圆形反意义寡核酸 (circASOs).
  • 与修改的ASO相比,未经修改的circasos的基因沉默效率的评估.
  • 开发多目标circASO,用于同时进行基因沉默.
  • 评估circASO生物稳定性和与化学修饰的兼容性.

主要成果:

  • 未经修改的circASOs表现出与化学修改的ASOs相比,具有可比的基因沉默效率.
  • 多目标circasos由于增加生物稳定性而实现了长时间和增强的基因沉默.
  • circASO平台展示了多个基因共同沉默的普遍性.
  • circASOs与各种化学修饰相兼容,允许增强功能.

结论:

  • 单链圆形ASO (circASOs) 是基因治疗的多功能和有效平台.
  • circASOs提供了更好的生物稳定性,并使多个基因的有效同时沉默成为可能.
  • 这种可编程circASO技术在开发下一代核酸药物方面具有重大潜力.