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遺伝子回路における騒音の機能的役割
Avigdor Eldar1, Michael B Elowitz
1Howard Hughes Medical Institute, Caltech M/C 114-96, 1200 East California Boulevard, Pasadena, California 91125, USA.
Nature
|September 11, 2010
まとめ
細胞の遺伝回路は,生物学的機能に不可欠な変動,またはノイズを経験します. この騒音は,遺伝子発現,細胞の分化,様々な生物の進化に不可欠な役割を果たしています.
科学分野:
- 細胞および分子生物学
- システム生物学 システム生物学
- 進化生物学の進化生物学について
背景:
- 細胞機能は"ノイズ"と呼ばれるストキャスティック変動に敏感な遺伝回路によって調節されます.
- 生物学的騒音は,歴史的に厄介なものとして見られていたが,その機能的重要性がますます認識されている.
- 騒音は,微生物と真核細胞から多細胞の発達と進化に至るプロセスに影響を及ぼします.
研究 の 目的:
- 生物系における騒音の重要な役割を見直す.
- 騒音,遺伝子回路アーキテクチャ,および生物学的機能を接続するために.
- 騒音研究における将来の課題と機会を特定する.
主な方法:
- 生物学的ノイズに関する既存の研究の文献レビュー.
- 騒音の機能的役割を示す例の分析.
- 騒音,回路アーキテクチャ,および機能を結びつける新興原理の合成.
主要な成果:
- 騒音は,大型レギュロンにおける遺伝子発現の調整に不可欠である.
- 騒音は,細胞集団における確率的微分化戦略を容易にする.
- 騒音は,長い時間スケールで進化的移行を促す可能性があります.
結論:
- 生物学的騒音は,遺伝回路の基本的な特徴であり,さまざまな機能的影響を及ぼします.
- 騒音,回路アーキテクチャ,および生物学的結果の間の相互作用を理解することは非常に重要です.
- 生物学における騒音の多面的な役割を完全に解明するには,さらなる研究が必要である.
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