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関連する概念動画

Reporter Genes02:11

Reporter Genes

12.9K
Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
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Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

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The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
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Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

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Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
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Conservative Site-specific Recombination and Phase Variation02:53

Conservative Site-specific Recombination and Phase Variation

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Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
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What is Gene Expression?01:42

What is Gene Expression?

194.3K
Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
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What is Gene Expression?01:36

What is Gene Expression?

10.9K
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised  of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then...
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Updated: Jan 13, 2026

In vivo Application of the REMOTE-control System for the Manipulation of Endogenous Gene Expression
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アダプタマーによる調節可能な生体内遺伝子発現

Jack Bryant1, Laura Herron1, Yesh Doctor1

  • 1Department of Bioengineering, University of California San Diego, CA, USA.

bioRxiv : the preprint server for biology
|January 7, 2026
PubMed
まとめ
この要約は機械生成です。

研究者らは、遺伝子発現を精密に制御するためのコンパクトなRNAスイッチであるアダプタマー(ADAR調節アプタマー)を開発した。このシステムは、低分子と内因性RNA編集を活用した調整可能な遺伝子治療を可能にし、マウスにおける肥満の逆転に有望であることを示している。

キーワード:
アダプタマーRNAスイッチ遺伝子治療遺伝子発現制御ADARアプタマー低分子肥満マウスモデル

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Rapid Synthesis and Screening of Chemically Activated Transcription Factors with GFP-based Reporters
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科学分野:

  • バイオテクノロジー; 分子生物学; 遺伝子治療

背景:

  • 遺伝子治療のための現在の誘導性遺伝子発現システムは、サイズが大きい、誘導期間が短い、免疫原性のあるレギュレーターなどの課題に直面しており、インビボでの応用を妨げている。; トランスジーン発現の精密かつ可逆的な制御を達成することは、遺伝子治療の安全性と有効性にとって極めて重要である。

研究 の 目的:

  • 新規でコンパクトなRNAスイッチを開発し、トランスジーン発現の精密かつ可逆的な制御を可能にすること。; 内因性RNA編集を用いた調整可能な遺伝子治療のための臨床的に適合可能なシステムを作成すること。

主な方法:

  • 低分子応答性アプタマーとADAR媒介RNA編集を統合したコンパクトなRNAスイッチ(<120 bp)であるアダプタマーを設計した。; ヒトT細胞を含む様々な細胞株でアダプタマーの機能性を実証した。; マウスにおいて、アダプタマーシステムを介したFGF21発現制御のためにアデノ随伴ウイルス(AAV)送達を利用した。

主要な成果:

  • アダプタマーシステムは、転写後メカニズムを介したタンパク質翻訳の精密で低分子依存的な調節を可能にする。; アダプタマーは、ヒトT細胞を含む複数の細胞株で高い機能性を示した。; インビボでは、AAV送達されたアダプタマー制御FGF21発現は、顕著な代謝リモデリング、エネルギー消費の増加、およびマウスにおける肥満の逆転につながった。

結論:

  • アダプタマーは、調整可能な遺伝子治療のための最小限のプログラム可能なRNAスイッチを表す。; このシステムは、遺伝子治療における多義的で用量制限のあるタンパク質の安全な展開のための臨床的に適合可能なアプローチを提供する。