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酵母における遺伝子発現に影響を与えるポリモルフィズム間の遺伝的相互作用

Rachel B Brem1, John D Storey, Jacqueline Whittle

  • 1Program in Computational Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, M2-B876, Seattle, Washington 98109, USA. rbrem@fhcrc.org

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|August 5, 2005
PubMed
まとめ
この要約は機械生成です。

遺伝的相互作用は酵母におけるトランスクリプトレベルに著しく影響し,多くの定量的な特征局部 (QTLs) は単一局部テストで見逃され,相互作用分析で検出されます.

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科学分野:

  • 遺伝学 遺伝学とは
  • システム生物学 システム生物学
  • 分子生物学は分子生物学である.

背景:

  • 定量的な特性の位置 (QTLs) 間の遺伝的相互作用は,特性の継承にとって極めて重要です.
  • これらの相互作用の有病率と根本的なメカニズムは,大部分が特徴づけられていないままです.
  • 相互作用は,遺伝子研究の統計的力に影響を与える可能性があります.

研究 の 目的:

  • イーストのトランスクリプトレベルにおける自然に発生する遺伝的相互作用の流行を調査する.
  • これらの相互作用に関与する特定の局所を特定する.
  • 異なる分析方法を使用して,相互作用するQTLの検出性を評価する.

主な方法:

  • 2つのSaccharomyces cerevisiae菌株の交配におけるトランスクリプトレベルの分析.
  • 主要QTLsと相互作用する二次ロキュの全ゲノム検索.
  • 同性菌株におけるエンジニアリングされたポリモルフィズムを用いて特定された相互作用の確認.

主要な成果:

  • 遺伝子相互作用は,トランスクリプトの57%の遺伝に関与すると推定されています.
  • 統計的に有意な相互作用ペアは225のトランスクリプトで特定されました.
  • 67%の二次相互作用ロシウムの個別の効果は,全ゲノム検出には小さすぎました.
  • 交配型ロカス (MAT) とGPA1の間の特定の相互作用が確認されました.

結論:

  • 遺伝子相互作用は,トランスクリプトレベルの調節に広く使用されています.
  • トランスクリプトレベルの変動に関与する多くのQTLは,単一ロクスの分析によって見逃されることがあります.
  • 相互作用を考慮する2段階のテスト戦略は,包括的な遺伝子研究にとって不可欠です.