哺乳類のレトロウイルスのようなタンパク質であるPEG10は,独自のmRNAを包装し,mRNAの配送のために偽型化することができる
Michael Segel1,2,3,4,5, Blake Lash1,2,3,4,5, Jingwei Song1,2,3,4,5
1Howard Hughes Medical Institute, Cambridge, MA 02139, USA.
Science (New York, N.Y.)
|August 20, 2021
まとめ
科学者たちは,細胞配送のための選択的内生性封じ込め (SELECTIVE ENCAPSIDATION FOR CELLULAR DELIVERY, SEND) と呼ばれる新しいシステムを使用して,特定のRNAをパッケージ化して配送するために,ウイルスのPEG10という遺伝子を再利用しました. これは治療用RNAの提供のための新しいプラットフォームを提供します.
科学分野:
- ゲノミクス
- 分子生物学
- ウイルス学
背景:
- ユーカリオットのゲノムには,レトロトランスポゾンやレトロウイルスからのガグホモログを含む,家畜化されたウイルスの遺伝子が含まれています.
- 哺乳類のゲノムには ウイルスのような粒子が組み合わさる Gag ホモログが含まれています
研究 の 目的:
- 哺乳類のガグホモログ,特にPEG10の機能を調査する.
- PEG10の特性に基づいた新しいRNA配送システムを開発する.
主な方法:
- LTRレトロトランポゾンホモログPEG10を含む哺乳類のガグホモログ
- PEG10の独自のmRNAを結合し分泌する能力が特徴です.
- マウスとヒトのPEG10を組み込み,特定のRNAを供給し,SENDシステムを構築しました.
主要な成果:
- PEG10は,そのmRNAの膀分泌を優先して結合し,促進する.
- PEG10のmRNA cargoは,その翻訳されていない領域を使用して再プログラムすることができます.
- マウスとヒトの細胞に特定のRNAを包装,分泌,配送するためのSENDプラットフォームを開発した.
結論:
- PEG10のmRNA包装と分泌能力は再プログラム可能である.
- SENDシステムは,治療用RNAを投与するためのモジュラーで効率的なプラットフォームです.
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