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関連する概念動画

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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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

マイクロRNAと細胞現象型

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
まとめ
この要約は機械生成です。

マイクロRNAは,環境の脅威から特殊な細胞を保護する. 彼らの急速な進化は,新しい細胞タイプの創造を促し,細胞の適応と多様化に関する洞察を提供します.

さらに関連する動画

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

関連する実験動画

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

科学分野:

  • 細胞生物学 細胞生物学
  • 進化生物学の進化生物学について
  • 分子生物学は分子生物学である.

背景:

  • 特殊な細胞は,環境変化に対して独特の脆弱性を備えています.
  • マイクロRNA (miRNA) は,遺伝子発現を調節する小さなノンコーディングRNAです.
  • miRNAの進化的動態は,細胞適応の文脈で十分に理解されていません.

研究 の 目的:

  • 特殊な細胞の環境脆弱性を軽減するマイクロRNAの役割を調査する.
  • 新しい細胞タイプの出現を促進するマイクロRNA進化の可能性を調査する.

主な方法:

  • 概念分析と文献レビュー.
  • マイクロRNAの進化と機能に関する既存のデータの探索.
  • マイクロRNA媒介による細胞適応の理論的モデリング.

主要な成果:

  • マイクロRNAは,環境圧力から生じる特定の細胞の脆弱性に対抗することができます.
  • マイクロRNAの急速な進化速度により,新しい細胞型の形成を促進するのに適した候補となる.
  • このメカニズムは,細胞レベルでの進化的イノベーションの潜在的な経路を提供します.

結論:

  • マイクロRNAは,細胞の回復力と適応において重要な役割を果たします.
  • マイクロRNAの進化は,細胞多様性の出現の重要な要因である.
  • これらのプロセスを理解することで,発達生物学や進化医学の研究に役立つでしょう.