ベクトルベクトルのトランスヴェヌラ外散の後に線状筋に均一なスケール独立遺伝子転送
Leonard T Su1, Kapil Gopal, Zhonglin Wang
1Department of Surgery, University of Pennsylvania, Philadelphia, PA 19104, USA.
Circulation
|September 15, 2005
まとめ
圧迫静脈注入は,ネズミや犬の孤立した肢体の筋肉繊維に均一な遺伝子転送を可能にします. この方法は,薬理学的薬剤の必要性を回避し,筋肉ジストロフィーにおける遺伝子療法のより安全なアプローチを提供します.
科学分野:
- バイオメディカルエンジニアリング
- 遺伝子療法の遺伝子治療法
- 分子生物学は分子生物学である.
背景:
- 筋肉縮症は,効果的な治療のために広範なタンパク質補充を必要とします.
- ソマティック遺伝子療法は,大型のDNA複合体をエンドセリア全体に効率的に輸送する必要がある.
- これまでの大型動物の遺伝子転送方法は,安全性と効率性のトレードオフに直面していました.
研究 の 目的:
- 筋肉繊維への遺伝子転送のためのスケール独立で安全な方法を開発する.
- 隔離された組織に遺伝子治療ベクトルを供給するための圧縮静脈注入を評価するために.
- 翻訳研究のための大型動物モデルでの均一な遺伝子転送を実証する.
主な方法:
- ラットと犬の肢体または半身の分離は,ターニケートを使用;異型移植による心筋の分離.
- 再結合アデノウイルスまたはアデノ関連ウイルスベクターによる,圧迫静脈注入による,lacZトランスゲンをコードする投与.
- 異なる注入圧力下での遺伝子転送効率の比較と,非圧縮投与による効果の比較.
主要な成果:
- ラットと犬のX-ガラクソシダース染色で,ほぼ100%のミオファイバー伝導を達成しました.
- 圧力投与による静脈注入は,非圧力投与と比較して,ベータ-ガラクトシダース濃度が著しく高かった.
- 低輸液圧 (<50mm Hg) は,異質でトランスゲン発現が低下した.
結論:
- 圧迫された静脈注入は,単離された組織における均一で,スケールおよびベクトルに独立したミオファイバー伝導を促進します.
- このテクニックは,心血管ホメオスタシスに対する薬理学的干渉を回避します.
- 犬の全肢に均一な遺伝子転送が実証され,将来のヒト疾患の翻訳研究を支援しています.
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