TAR配列の過剰発現により,細胞はヒト免疫不全ウイルス複製に耐性を持つようになる

B A Sullenger¹, H F Gallardo, G E Ungers

¹Program of Molecular Biology, Memorial Sloan-Kettering Cancer Center, New York, New York 10021.

Cell

|November 2, 1990

まとめ

細胞内のTAR誘導 RNAの過剰発現は,HIV-1の複製を99%以上大幅に抑制する. このアプローチは,HIVとSIVmacとの闘いに有望であり,細胞の生存能力に悪影響を与えない.

科学分野:

分子生物学は分子生物学である.
ウイルス学ウイルス学ウイルス学
遺伝子療法の遺伝子療法です.

背景:

ヒト免疫不全ウイルス (HIV) の複製は,特定のRNA構造に依存しています.
TAR (トランス・アクティベーション・レスポンス) 要素は,HIVの転写に極めて重要です.
ウイルスの複製に対する細胞抵抗性を開発することは,重要な治療目標です.

研究の目的:

HIV-1複製を抑制するTARデコイRNAの有効性を評価する.
TARの誘導体が他のレトロウイルスの複製に影響するかどうかを判断する.
宿主細胞におけるTAR誘導 RNAの発現の安全性を評価する.

主な方法:

レトロウイルスベクトル内のキメリックtRNA(meti) -TARトランスクリプションユニットを使用します.
HIV-1 TARトランスクリプトの高レベルの発現を達成するために,CEM SS細胞をトランスデュースする.
HIV-1複製の抑制を測定し,細胞活性を評価する.

主要な成果:

チメリックtRNA-TARトランスクリプトの過剰発現は,HIV-1複製の99%以上の阻害をもたらしました.
アムフォトロプ的マウリンレトロウイルスの複製は影響を受けませんでした.
TARデコイRNAの発現は,CEM SS細胞の生存能力に悪影響を及ぼさなかった.
SIVmacの複製は,HIV-1 TAR decoysによっても抑制されました.

結論:

TARデコイRNAは,HIV-1複製の強力な阻害剤である.
この戦略は,他のレトロウイルスに影響を与えない特異性を示しています.
このアプローチは宿主細胞にとって安全であり,様々なHIV単離体やSIVmac.に対して潜在的に有効である.

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