耐久的で効率的なヒトゲノムシューティング in vivo
Martino Alfredo Cappelluti1, Valeria Mollica Poeta1, Sara Valsoni1
1San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, Italy.
Nature
|February 28, 2024
まとめ
エピジェネティックエディタを一時的に投与することで,マウスのPcsk9遺伝子を最大1年間持続的に静止させることができ,DNAの破損を伴わない,インビヴォの治療のための有望な新しい道を提供できます.
科学分野:
- エピジェネティクス
- 遺伝子規制
- 分子療法
背景:
- 転写抑制剤による永久的な表遺伝子静止は,病気の治療の可能性を示しています.
- 暫定的なエディタを投与した後の持続的な静音化のインビボの確認は極めて重要です.
研究 の 目的:
- プログラム可能なエディターを使用して,Pcsk9遺伝子の耐久性 in vivo 静止化を調査する.
- 短期間投与されたエピジェネティックサイレンス剤の 治療の可能性を評価する.
主な方法:
- Pcsk9静止のためのDNA結合プラットフォームとしての亜鉛指タンパク質のスクリーニング.
- Pcsk9を標的にするエディターmRNAを運ぶ脂質ナノ粒子をマウスにインビボ投与する.
- オールインワン進化型トランスクリプション抑制器 (EvoETR) の開発と試験.
主要な成果:
- 脂質ナノ粒子を介してエディタを一度投与すると,ネズミの循環中のPCSK9濃度がほぼ1年間50%減少した.
- エピジェネティック・サイレンスと抑圧的な痕跡は 肝臓の再生を通して持続し 遺伝性を確認しました
- EvoETRコンストラクタは,DNAの破損を誘導することなく,高い特異性と効率的なPCSK9減少を達成しました.
結論:
- エピジェネティックエディタを一時的に投与することで,耐久性のある遺伝子静止を in vivo で達成できます.
- 進化したトランスクリプション抑制剤は 遺伝的治療のための安全で効果的なプラットフォームを提供します
- この研究は,生体内でのエピジェネティックサイレンシング療法の開発のための基盤を確立します.
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