Ca(2+) -刺激されたアデニリルサイクラゼAC1は,単一の遺伝子療法として,およびHCN2と組み合わせて,効率的な生物学的なペースを発生します
Gerard J J Boink1, Bruce D Nearing, Iryna N Shlapakova
1Department of Pharmacology, Center for Molecular Therapeutics, Columbia University, New York, NY 10032, USA.
Circulation
|July 4, 2012
まとめ
心臓内のAC1またはHCN2/AC1を用いた遺伝子治療は,HCN2単独と比較して優れた生物ペースと自律的応答性を提供します. この進歩は,心拍のコントロールと適応力を改善します.
科学分野:
- 心血管生物学 心血管生物学
- 遺伝子療法の遺伝子治療法
- 分子心臓病学 分子心臓病学
背景:
- HCN2遺伝子転送による生物学的ペースは,心拍数と自律的反応の制限を示しています.
- 強化された生物学的ペースを高めるための代替遺伝子療法の調査は極めて重要です.
研究 の 目的:
- AC1遺伝子移植単独またはHCN2と組み合わせて,HCN2単独の有効性を比較するために.
- これらの遺伝子療法の心拍数,自律的調節,ペース依存に対する影響を評価する.
主な方法:
- HCN2,AC1,またはHCN2/AC1のアデノウイルス構造は,心房閉塞の犬の左束の枝に埋め込まれました.
- 遺伝子発現レベル,基礎鼓動率,脱出時間,電子鼓動依存度を測定した.
- 心拍数変動と昼夜リズムを,24時間のホルター記録を用いて分析した.
主要な成果:
- HCN2 / AC1の遺伝子転送は,AC1 (60bpm) またはHCN2 (50bpm) 単独と比較して,基礎ビート率 (129bpm) が著しく高かった.
- HCN2/AC1とAC1は,HCN2 (34%) と比較して,電子バックアップペース (6%と2%それぞれ) に依存性が低いことを示した.
- AC1はパラシンパティックモジュレーションを強化し,HCN2/AC1はシンパティックモジュレーションを大きく促進した.
結論:
- AC1またはHCN2/AC1が左束の枝に過剰発現すると,非常に効率的な生物学的ペースが実現します.
- 結合AC1/HCN2遺伝子療法は,HCN2単独と比較して優れた自律的調節を提供します.
- これらの発見は,AC1およびHCN2 / AC1遺伝子療法の先進的な心臓ペースソリューションのための可能性を支持しています.
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