制御ネットワークのトポロジーと遺伝子発現の遺伝子構造
Matthew Aguirre1, Jeffrey P Spence2,3,4, Guy Sella5,6
1Department of Biomedical Data Science, Stanford University, Stanford CA.
bioRxiv : the preprint server for biology
|August 20, 2025
まとめ
遺伝子発現におけるほとんどの遺伝的変異は,トランス作用の発現定量特征局 (eQTL) から生じる. ネットワーク構造,特にハブ・レギュレータは この遺伝的構造を形作って 複雑な特徴に影響を与えます
科学分野:
- 遺伝学
- システム生物学
- バイオ情報学
背景:
- ヒトの遺伝子発現におけるほとんどの遺伝的変異は,トランス作用発現定量特征局 (eQTL) から発生する.
- トランス-eQTLを発見し,遺伝子発現と複雑な特徴に対するそれらの累積的な影響を理解することは依然として困難です.
- 遺伝子構造と遺伝子規制ネットワークの相互作用は完全に解明されていません.
研究 の 目的:
- 遺伝子発現の遺伝的構造が遺伝子調節ネットワークにどのように影響するか調査する.
- 遺伝子発現の調節とネットワーク特性との相互作用をモデル化すること.
- 表現遺伝性のゲノム分布を理解する
主な方法:
- 遺伝子発現調節のための構造的因果モデルを開発した.
- ネットワークモチーフとハブレギュレータを組み込んだシミュレーションされた遺伝子レギュレータネットワーク.
- シスとトランス遺伝性の ゲノム分布を分析した
主要な成果:
- 遺伝子発現の遺伝的構造は,局所ネットワークのモチーフとハブレギュレータによって大きく形作られています.
- ハブ・レギュレータは,トランス作用の遺伝子変異の主要な源として機能し,ネットワークの経路を短縮します.
- モチーフとハブで強化されたシミュレーションネットワークは,観察されたcisとtransの遺伝パターンを正確に反映します.
結論:
- 遺伝子発現の遺伝的構造は,よりシンプルなモデルによって示唆されるよりも稀で,よりプレイオトロプ的です.
- ネットワークの特性,特にハブとモチーフは遺伝子発現の遺伝性を理解するために不可欠です.
- この発見は 複雑な特徴や遺伝子調節に関する将来の研究に 重要な意味を持ちます
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