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関連する概念動画

Positive Regulator Molecules01:45

Positive Regulator Molecules

To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
Negative Regulator Molecules01:23

Negative Regulator Molecules

Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
Positive Regulator Molecules02:39

Positive Regulator Molecules

Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
Regulation of Metabolism01:19

Regulation of Metabolism

Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
Regulation of Hematopoietic Stem Cells01:01

Regulation of Hematopoietic Stem Cells

All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
pH Regulation in Cells01:28

pH Regulation in Cells

pH plays a critical role in maintaining normal cellular activities. It helps maintain the structure and function of various proteins, dictates the charge on cellular membranes, and is crucial for metabolic reactions inside the cell. Moreover, cells use the energy from the proton motive force to generate ATP.
Cytosolic pH
Under physiological conditions, the cytosolic pH is slightly more acidic than the extracellular pH. However, cells must prevent further acidification of their cytosol to...

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関連する実験動画

Updated: Jul 16, 2026

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance
14:01

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance

Published on: July 22, 2011

陽性・陰性レギュレータによるT細胞機能の制御

Andrew L Singer1, Gary A Koretzky

  • 1The Abramson Family Cancer Research Institute, Department of Laboratory Medicine and Pathology, University of Pennsylvania, Philadelphia, PA 19104, USA. koretzky@mail.med.upenn.edu

Science (New York, N.Y.)
|June 1, 2002
PubMed
まとめ

T細胞受容体のシグナリングは,T細胞の反応を制御する. これらの経路を理解することは,免疫疾患,感染症,がんに対する治療法の開発の鍵です.

科学分野:

  • 免疫学 免疫学とは
  • 分子生物学は分子生物学である.
  • 細胞シグナル伝達 細胞信号伝達

背景:

  • T細胞は,適応性免疫に不可欠です.
  • T細胞受容体 (TCR) のエンゲージメントは,シグナリングカスケードを開始します.
  • 信号の大きさと持続時間は,T細胞の運命を決定する (活性化,無活性化,除去).

研究 の 目的:

  • T細胞の信号伝導を調節する分子機構を解明する.
  • T細胞活性化経路の重要な構成要素を強調する.
  • 免疫関連疾患における治療開発のための基盤を提供すること.

主な方法:

  • T細胞の信号伝達経路の分析.
  • 複合体形成のシグナル伝達に関与する分子支架の識別.
  • 規制メカニズムの見直し (ポジティブとネガティブなフィードバックループ).

主要な成果:

  • TCRシグナリングは,ポジティブとネガティブなフィードバックによって厳格に規制されています.
  • 分子構造は,シグナル伝達複合体を組み立てる上で重要な役割を果たします.
  • STKE接続マップは,T細胞活性化コンポーネントを視覚的に表現しています.

さらに関連する動画

Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation
15:33

Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation

Published on: August 13, 2013

In Vitro Functional Analysis of Regulatory T cells: Focus On Proliferation And Differentiation
10:21

In Vitro Functional Analysis of Regulatory T cells: Focus On Proliferation And Differentiation

Published on: June 9, 2026

関連する実験動画

Last Updated: Jul 16, 2026

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance
14:01

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance

Published on: July 22, 2011

Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation
15:33

Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation

Published on: August 13, 2013

In Vitro Functional Analysis of Regulatory T cells: Focus On Proliferation And Differentiation
10:21

In Vitro Functional Analysis of Regulatory T cells: Focus On Proliferation And Differentiation

Published on: June 9, 2026

結論:

  • T細胞の信号調節を理解することは,免疫システムの調節に不可欠です.
  • この知識は,新しい治療法の開発に役立つかもしれない.
  • T細胞の反応をターゲットにすることで,感染症,がん,自己免疫疾患を治療することができる.