関連する実験動画
Updated: Feb 3, 2026

08:16
Movement Retraining using Real-time Feedback of Performance
Published on: January 17, 2013
13.8K
フィードバック制御のダイナミックな要求を定義します
Patrick Harrigan1, Hiten D Madhani2, Hana El-Samad2
1Department of Biochemistry and Biophysics, California Institute for Quantitative Biosciences, University of California, San Francisco, San Francisco, CA 94158, USA.
Cell
|October 20, 2018
まとめ
この研究では,生物学的フィードバックのダイナミクスを正確に測定するために,閉ループ光遺伝的補償 (CLOC) を導入します. CLOCは,酵母シグナル伝達におけるフィードバックレギュレータに対する明確なダイナミックなニーズを示しています.
科学分野:
- システム生物学
- 分子生物学
- 遺伝学
背景:
- 生物信号ネットワークは,リアルタイムの操作調整のためのフィードバック制御に依存しています.
- 遺伝子ノックアウトのような 従来の遺伝的技術は フィードバックを特定しますが 特定のダイナミクスではありません
研究 の 目的:
- 生物学的システムにおけるフィードバックダイナミクスを解剖するための新しい戦略である閉環光遺伝的補償 (CLOC) を開発し,実施する.
- 生物学的経路内のフィードバックレギュレータのダイナミック要件を定量的に定義する.
主な方法:
- CLOCは,フィードバック・レギュレータの削除後の経路出力のリアルタイムモニタリングのためのカスタムハードウェア・ソフトウェアシステムを使用します.
- 計算モデルにより,補償的な光遺伝的トランスクリプションの入力が動的に計算され,提供されます.
- この方法は酵母フェロモン反応経路に適用された.
主要な成果:
- CLOCは,リアルタイムでフィードバックの削除を成功裏に補償しました.
- 酵母フェロモン反応経路における3つのよく特徴づけられたフィードバック・レギュレータの独特のダイナミック要件が特定されました.
- この研究は,フィードバックのダイナミクスを特徴づけるための静的な遺伝学的方法の限界を強調している.
結論:
- CLOCは,生物学的フィードバックレギュレータのダイナミック機能を正確に定義するための広く適用可能な方法論を提供します.
- このアプローチは制御理論と伝統的な遺伝学を統合し,生物学的ネットワークの研究を進めています.
- フィードバックのダイナミクスを理解することは 細胞の調節と生物学的システムの設計を理解するために不可欠です
関連する概念動画
Feedback control systems
722
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
722
Feedback Inhibition
57.1K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
57.1K
Dosage Compensation
7.4K
In animals, gender is determined by the number and type of sex chromosome. For example, human females have two X chromosomes, and males have one X and one Y chromosome, whereas C.elegans with one X chromosome is a male, and the one with two X chromosomes is a hermaphrodite.
In addition to sexual development, the X chromosome has genes involved in autosomal functions such as brain development and the immune system. Therefore, males and females with distinct numbers of X chromosomes will...
In addition to sexual development, the X chromosome has genes involved in autosomal functions such as brain development and the immune system. Therefore, males and females with distinct numbers of X chromosomes will...
7.4K
Compensation Mechanisms
2.1K
The human body employs intricate mechanisms to counteract changes in blood pH, preventing conditions like acidosis (pH < 7.35) and alkalosis (pH > 7.45). These compensatory responses aim to restore normal arterial blood pH by engaging respiratory or renal systems, depending on the source of the imbalance.
Respiratory Compensation
This mechanism addresses metabolic-induced pH imbalances by adjusting breathing rates. Respiratory compensation begins within minutes of detecting a pH...
Respiratory Compensation
This mechanism addresses metabolic-induced pH imbalances by adjusting breathing rates. Respiratory compensation begins within minutes of detecting a pH...
2.1K
Real Time RT-PCR
65.1K
Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...
The real-time quantification of the number of amplified products is...
65.1K
Feedback Loops
64.4K
In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.
64.4K

