細胞シグナリングシステムにおける情報伝達を制約する熱力学的確信度関係
Shreyansh Verma1, Vishva Saravanan R2, Bhaswar Ghosh3
1International Institute of Information Technology Hyderabad, Gachibowli, Hyderabad, Telangana, 500032, INDIA.
Physical biology
|February 2, 2026
まとめ
生物学的システムはエントロピー生成のためにエネルギーを必要とする。熱力学的確信度関係(TUR)は変動を制限し、ストレス下の酵母シグナリング経路における細胞の情報伝達精度を向上させる。
科学分野:
- 生物物理学
- 細胞生物学
- システム生物学
背景:
- 生物学的システムは非平衡状態で動作するため、非平衡エントロピー生成には継続的なエネルギー供給が必要である。
- 熱力学的確信度関係(TUR)は、エントロピー生成率に対する電流変動の下限を定義する。
- 生物学的システムにおける変動は、信号対雑音比に影響を与え、情報伝達精度を制限する。
研究 の 目的:
- TURが細胞シグナリングシステムにおける情報伝達能力に及ぼす影響を調査すること。
- 転写因子(TF)のダイナミクスと確率性が細胞情報処理において果たす役割を分析すること。
- 熱力学的変動とエントロピー生成がストレス下の細胞シグナリングにどのように影響するかを解明すること。
主な方法:
- 酵母からの実験データに適用された連成数学モデリングと機械学習アプローチ。
- 細胞シグナリング経路内での転写因子拡散と活性化ダイナミクスの分析。
- 情報伝達に対する熱力学的制約を理解するためのTUR に基づく理論モデリング。
主要な成果:
- 転写因子(TF)の活性化と核への偏った拡散はエントロピー生成を生み出す。
- このプロセスはTF電流を増幅し、変動を低減させ、情報伝達精度を向上させる。
- TURの境界が観察され、細胞情報処理におけるその役割が実証された。
結論:
- TURは細胞シグナリングにおける情報伝達精度の最適化において重要な役割を果たす。
- エントロピー生成と熱力学的変動は、細胞情報処理の重要なメカニズムである。
- 本研究は、ストレス下でのTFの作用原理とその調節に関する洞察を提供する。
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