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相关概念视频

Transcription01:10

Transcription

138.2K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
138.2K
Inheritance of Chromatin Structures03:17

Inheritance of Chromatin Structures

6.0K
Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying...
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Transcription01:17

Transcription

23.9K
Transcription is the synthesis of RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in correctly synthesizing messenger RNA (mRNA). Transcriptional regulation is responsible for the differentiation of different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds of RNA Molecules
In eukaryotes,...
23.9K
Methods of Nuclear Reprogramming01:24

Methods of Nuclear Reprogramming

1.4K
Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
1.4K

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相关实验视频

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Understanding Early Organogenesis Using a Simplified In Situ Hybridization Protocol in Xenopus
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在体外转录酶:研究XNA合成的方法.

Lisa Nakayama1, Lijun Zhou1

  • 1Biochemistry, Biophysics, and Chemical Biology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States; Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States; Penn Institute for RNA Innovation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States.

Methods in enzymology
|December 3, 2025
PubMed
概括

异核酸 (XNA) 为治疗提供了增强的稳定性和结合性. 这项研究详细介绍了一种使用工程聚合酶,SFM 5-7通过体外转录合成XNAs的方法.

关键词:
2′-氧核糖核酸 - - 氧核糖核酸在体外转录 In vitro转录聚合酶净化净化方法XNA XNA XNA XNA XNA XNA XNA XNA XNA XNA XNA XNA XNA

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科学领域:

  • 生物化学 生物化学
  • 分子生物学分子生物学
  • 合成生物学 合成生物学

背景情况:

  • 异核酸 (XNA) 是具有改性糖骨架的DNA/RNA类似物.
  • 这些修改增强了核酶抵抗力和结合亲和力.
  • 对于像反意义寡核酸 (ASOs) 和小干扰RNA (siRNAs) 这样的寡核酸治疗方法,XNAs是有前途的.

研究的目的:

  • 描述工程聚合酶SFM 5-7的净化过程.
  • 提出使用SFM 5-7进行XNA合成的体外转录协议.
  • 用2'--RNA (2'-F-RNA) 作为一个例子来演示XNA合成.

主要方法:

  • 工程聚合酶SFM 5-7的净化.
  • 使用SFM 5-7进行XNA的体外转录.
  • 化聚烯胺凝电泳 (PAGE) 用于反应监测.

主要成果:

  • 工程聚合酶SFM 5-7已经成功净化.
  • 建立了一个XNA体外转录的协议.
  • 使用PAGE合成和分析了2'-F-RNA.

结论:

  • 在体外转录是缺乏固相合成器的实验室中XNA合成的有效方法.
  • 工程聚合酶SFM 5-7可以合成具有2'-修饰的XNA.
  • 该协议促进了XNA在研究和治疗开发中的使用.