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相关概念视频

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To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
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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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相关实验视频

Updated: May 5, 2026

Oct4GiP Reporter Assay to Study Genes that Regulate Mouse Embryonic Stem Cell Maintenance and Self-renewal
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伪基因衍生小干扰RNAs调节小鼠卵细胞中的基因表达.

Oliver H Tam1, Alexei A Aravin, Paula Stein

  • 1Cold Spring Harbor Laboratory, Watson School of Biological Sciences and Howard Hughes Medical Institute, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA.

Nature
|April 12, 2008
PubMed
概括
此摘要是机器生成的。

伪基因曾经被认为是非功能性的,在小鼠卵细胞中产生小干扰RNA (siRNA). 这些siRNAs通过RNA干扰途径调节基因表达,揭示了伪基因的新生物学功能.

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Meiotic Spindle Assessment in Mouse Oocytes by siRNA-mediated Silencing
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A Computational Pipeline for Intergenic/Intragenic Enhancer RNA Quantification in Mouse Embryonic Stem Cells
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科学领域:

  • 基因组学就是基因组学.
  • 分子生物学分子生物学
  • 在RNA生物学,RNA生物学.

背景情况:

  • 伪基因是来自蛋白质编码基因的基因遗迹,以前被认为是非功能性的.
  • 它们在细胞过程中的作用在很大程度上尚未被探索,尽管它们在哺乳动物基因组中的丰富性.

研究的目的:

  • 研究伪基因在基因调节中的潜在功能.
  • 探索来自伪基因的小RNAs的生成和作用.

主要方法:

  • 在小鼠卵细胞中分析小RNA种群.
  • 来自伪基因的小干扰RNAs (siRNAs) 的鉴定.
  • 研究Dicer蛋白质损失对siRNA点的影响.

主要成果:

  • 伪基因的一个子集在小鼠卵细胞中产生内源性小干扰RNA (endo-siRNA).
  • 这些内源siRNAs是从由伪基因和蛋白质编码基因转录形成的双链RNAs或直接从反转重复伪基因中处理的.
  • endo-siRNAs,与Piwi交互RNAs一起,可能抑制移动遗传元素.
  • 丢失Dicer会增加endo-siRNA标的表达,证实它们的调节作用.

结论:

  • 伪基因通过RNA干扰途径在基因表达中具有调节功能.
  • 这种伪基衍生的siRNA产生可能有助于对哺乳动物中阿尔戈纳特介导催化物的进化保存.