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Preparation of Cytoplasmic and Nuclear Long RNAs from Primary and Cultured Cells
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長い核を保持したノンコーディングRNAの3'端処理は,tRNAのような細胞質RNAを生成する
Jeremy E Wilusz1, Susan M Freier, David L Spector
1Watson School of Biological Sciences, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.
Cell
|December 2, 2008
まとめ
MALAT1遺伝子ロカスから派生した新しい小型のRNAは,核のMALAT1長いノンコーディングRNAとは異なる細胞質に存在します. この発見は,1つの場所から2つのRNAタイプを生成する新しい遺伝子発現機構を明らかにしています.
科学分野:
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
- RNA 生物学 RNA 生物学
背景:
- MALAT1は,人間の癌で頻繁に誤調節される長いノンコーディングRNAです.
- MALAT1の規制メカニズムを理解することは,がん研究にとって極めて重要です.
研究 の 目的:
- MALAT1ロカスから発生した新しい小型のRNAを特定し,特徴づけること.
- これらの小さなRNAの生物発生と局所化を明らかにするために.
主な方法:
- RNAのシーケンシングはRNAのシーケンシングです.
- ノース・ブロッティング (Northern blotting) とは
- サブセルラー分化による分化.
- 酵素測定法によるアッセイ
主要な成果:
- MALAT1ロカスから保存された61ヌクレオチドの小RNAを特定し,ヒト組織で広く発現した.
- 小型RNAは,核のMALAT1トランスクリプトとは異なり,細胞質に限定的に局所されています.
- RNase PとtRNA生物生成酵素は,MALAT1トランスクリプトを処理して,成熟したMALAT1RNAと小RNAの両方を生成します.
結論:
- 単一のMALAT1遺伝子ローカスは,核に留まっていた長いノンコーディングRNAと,細胞質の小さなRNAの両方を生成することができます.
- これは,遺伝子発現における新しい3'-端処理メカニズムを表しています.
- この発見は,正常な生理学と癌のような疾患状態の両方でRNAの調節を理解するための意味を持っています.
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