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相关概念视频

MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
Small interfering RNAs (siRNA)02:30

Small interfering RNAs (siRNA)

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 ATP-dependent...

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相关实验视频

Updated: May 7, 2026

Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome
07:23

Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome

Published on: June 15, 2016

微RNA和细胞表型

Kenneth S Kosik1

  • 1Neuroscience Research Institute, Department of Molecular Cellular Developmental Biology, University of California, Santa Barbara, Santa Barbara, CA 93106, USA. kenneth.kosik@lifesci.ucsb.edu

Cell
|October 5, 2010
PubMed
概括
此摘要是机器生成的。

微RNAs保护专门的细胞免受环境威胁. 它们的快速进化可能会推动新细胞类型的产生,为细胞适应和多样化提供了洞察力.

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Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis

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相关实验视频

Last Updated: May 7, 2026

Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome
07:23

Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome

Published on: June 15, 2016

Biotin-based Pulldown Assay to Validate mRNA Targets of Cellular miRNAs
11:00

Biotin-based Pulldown Assay to Validate mRNA Targets of Cellular miRNAs

Published on: June 12, 2018

Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis
11:44

Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis

Published on: March 30, 2019

科学领域:

  • 细胞生物学 细胞生物学
  • 进化生物学 进化生物学
  • 分子生物学分子生物学

背景情况:

  • 专门的细胞对环境变化具有独特的脆弱性.
  • 微RNA (miRNA) 是小型非编码RNA,可以调节基因表达.
  • 在细胞适应的背景下,miRNAs的进化动态尚未完全理解.

研究的目的:

  • 探索微RNAs在减轻特殊细胞环境脆弱性的作用.
  • 研究微RNA进化的潜力,作为新型细胞类型出现的促进者.

主要方法:

  • 概念分析和文献评论.
  • 探索有关微RNA进化和功能的现有数据.
  • 微RNA介导的细胞适应的理论建模.

主要成果:

  • 微RNA可以抵消由环境压力引起的特定细胞脆弱性.
  • 微RNA的快速进化速度使它们成为促进新细胞类型形成的合适候选者.
  • 这种机制为细胞层面的进化创新提供了潜在的途径.

结论:

  • 微RNA在细胞弹性和适应方面发挥着至关重要的作用.
  • 微RNA进化是细胞多样性的出现的一个关键因素.
  • 了解这些过程可以为发育生物学和进化医学的研究提供信息.