ニューロデゲネレーションにおける非伝統的な翻訳の再考
Fen-Biao Gao1, Joel D Richter2, Don W Cleveland3
1Department of Neurology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
Cell
|November 18, 2017
まとめ
反復関連非AUG (RAN) 翻訳を含む非従来の翻訳は,神経変性疾患に寄与する. これらのメカニズムを研究することで 翻訳生物学と病理学の両方への洞察が得られます
科学分野:
- 分子生物学
- 神経科学
- 遺伝学
背景:
- ユカリオット翻訳は 細胞機能にとって極めて重要な 制御されたプロセスです
- 異常な重複タンパク質は 年齢に関係する神経変性疾患に 関わっている.
- ニュークレオチドの反復膨張はこれらの疾患の既知の原因です.
研究 の 目的:
- リピート・エクスパンション疾患における非従来的なトランスレーション開始メカニズムについて議論する.
- タンパク質の多様性を再現する要因を探求する.
- 病気や基本的な生物学を理解するための 繰り返し翻訳の研究の可能性を強調する
主な方法:
- 異常な重複タンパク質と核酸重複膨張に関する最近の研究のレビュー.
- 近親のAUGサイト利用と反復関連非AUG (RAN) 翻訳を含む非従来の翻訳開始の分析.
- リボソームのフレームシフト,DNA複製,膨張,修復メカニズムの検討.
主要な成果:
- 主要な2つの非従来の翻訳開始形態の特定:近似のAUGサイト使用とRAN翻訳.
- 繰り返されるタンパク質の変異は 多数のメカニズムから生じます 単なる非慣習的な発起から生じません
- 翻訳生物学と病原性への洞察の可能性
結論:
- 非伝統的な翻訳,特にRAN翻訳は,繰り返し拡大によって引き起こされる疾患において重要な役割を果たします.
- 翻訳開始,フレームシフト,DNAレベルのプロセスを考慮する必要があります.
- リピート・トランスレーションの研究は 基礎科学と神経変性障害の治療戦略の両方を 進歩させる可能性を秘めています
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