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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...
RNA Interference01:23

RNA Interference

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.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
RNA Interference01:23

RNA Interference

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.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
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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関連する実験動画

Updated: Jun 22, 2026

Detection of miRNA Targets in High-throughput Using the 3'LIFE Assay
12:49

Detection of miRNA Targets in High-throughput Using the 3'LIFE Assay

Published on: May 25, 2015

マイクロRNAの行き詰まりです.

René F Ketting1

  • 1Hubrecht Institute, Uppsalalaan 8, 3584 CT, Utrecht, Netherlands. ketting@niob.knaw.nl

Cell
|December 28, 2007
PubMed
まとめ
この要約は機械生成です。

デッドエンド (Dnd1) タンパク質は,生殖細胞の生存と腫瘍の予防に不可欠です. 新しい研究によると,Dnd1は,伝達 RNA のマイクロRNA サイレンシングを遮断し,遺伝子発現を保証することによって作用する.

さらに関連する動画

mirMachine: A One-Stop Shop for Plant miRNA Annotation
06:16

mirMachine: A One-Stop Shop for Plant miRNA Annotation

Published on: May 1, 2021

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method
09:06

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method

Published on: October 7, 2025

関連する実験動画

Last Updated: Jun 22, 2026

Detection of miRNA Targets in High-throughput Using the 3'LIFE Assay
12:49

Detection of miRNA Targets in High-throughput Using the 3'LIFE Assay

Published on: May 25, 2015

mirMachine: A One-Stop Shop for Plant miRNA Annotation
06:16

mirMachine: A One-Stop Shop for Plant miRNA Annotation

Published on: May 1, 2021

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method
09:06

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method

Published on: October 7, 2025

科学分野:

  • 発達生物学 発達生物学とは
  • 分子生物学は分子生物学である.
  • がん研究 がん研究

背景:

  • デッドエンド (Dnd1) は,必須のRNA結合タンパク質である.
  • Dnd1は,生殖細胞の生存能力を維持する上で重要な役割を果たします.
  • Dnd1は,生殖細胞腫瘍形成を抑制することが知られている.

研究 の 目的:

  • Dnd1が機能する分子メカニズムを解明する.
  • Dnd1とマイクロRNA媒介による遺伝子サイレンシングの関係を調査する.
  • Dnd1が,生殖細胞におけるマイクロRNAの活性にどのように反作用するかを理解する.

主な方法:

  • この研究では,RNAとタンパク質の相互作用を評価するための分子生物学技術が関与している可能性が高い.
  • 実験では,mRNAとmicroRNAの発現レベルを分析することに焦点を当てているかもしれません.
  • マイクロRNA標的に対するDnd1の影響を調査することは,おそらく重要な方法であった.

主要な成果:

  • 証拠によると,Dnd1はマイクロRNA媒介によるmRNAの静止に直接干渉する.
  • Dnd1は,特定のmRNAを微RNAによる分解または翻訳抑制から保護するようです.
  • この対抗メカニズムは,生殖細胞の生存能力と腫瘍抑制におけるDnd1の役割を裏付けるように提案されています.

結論:

  • 生殖細胞におけるDnd1の機能は,少なくとも部分的には,マイクロRNAサイレンシングを反抗することによって媒介されます.
  • このメカニズムは,Dnd1がどのようにして生殖細胞の発達をサポートし,腫瘍発生を防ぐのかを説明します.
  • この発見は,生殖系統の発達における転写後の遺伝子調節に関する新しい洞察を提供します.