ヘルペスウイルスに感染した細胞におけるDNA複製構造の形成には,ウイルスDNA結合タンパク質が必要です
1Program on Cell and Developmental Biology, Harvard Medical School, Boston, Massachusetts 02115.
Cell
|December 2, 1988
まとめ
ヘルペス・シンプレックスウイルス感染症は,細胞のDNA複製部位をウイルス構造に移動させます. 機能的なICP8タンパク質は,この再分配に不可欠であり,核内のDNA複製タンパク質を組織します.
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
- 細胞生物学 細胞生物学
背景:
- ユカリオットDNAの合成は,分離された核部位にあるマルチ酵素複合体で起こります.
- DNA複製の空間的組織は,ゲノムの安定性にとって極めて重要です.
研究 の 目的:
- ホスト細胞のDNA複製部位に対するヘルペスシンプレックスウイルス (HSV) 感染の影響を調査する.
- この過程におけるHSVのDNA複製タンパク質ICP8の役割を決定する.
主な方法:
- 細胞DNA複製部位を特定するためのブロモデオキシウリジン (BrdU) のラベリング.
- 野生型および変異性HSV株による細胞の感染.
- ICP8とDNA複製部位を視覚化するための免疫光顕微鏡.
主要な成果:
- HSV感染は,細胞のDNA複製部位が,ウイルス前複製構造に移動することを引き起こします.
- これらのウイルスの構造には,HSVのDNA複製タンパク質ICP8.8が含まれています.
- 機能的なICP8が欠けている突然変異HSV株は,宿主細胞DNA複製部位の位置を変えることはありません.
結論:
- 細胞DNA複製機構は,HSV感染中にウイルス前複製部位に採用されます.
- 細胞DNA複製複合体の再分配には,機能的なICP8が必要です.
- 特定のウイルスタンパク質は,核内の宿主DNA複製タンパク質を組織することができます.
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