共通効果因子処理は,刺激に対する細胞特有の反応を媒介する
Kathryn Miller-Jensen1, Kevin A Janes, Joan S Brugge
1Center for Cell Decision Processes, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Nature
|July 20, 2007
まとめ
細胞特異的なシグナリング応答は,一般的な下流エフェクタの異なる上流活性化から生じる. この原理は,多様な細胞現象型を説明し,シグナリング機能不全の標的治療の開発に役立ちます.
科学分野:
- 細胞生物学 細胞生物学
- システム生物学 システム生物学
- 薬理学 薬理学とは
背景:
- 細胞内信号伝達経路は,細胞全体で共通の成分を共有しています.
- これらの経路を刺激すると,細胞特異的なフェノタイプが生まれ,薬の開発が複雑になる.
- 細胞特異性を理解することは,標的型療法にとって極めて重要です.
研究 の 目的:
- 細胞特異的なシグナル伝達イベントが,エフェクタを通して統合され,異なる結果を生成する方法を調査する.
- 腫瘍死滅因子とアデノウイルスのベクトルの間のシナージーを分析して,細胞特異的な反応を検出する.
- 細胞特異信号伝達の予測モデルを開発する.
主な方法:
- 細胞内ネットワークを分析するためにシステムモデリングのアプローチを適用しました.
- エフェクター基板を介してフェノタイプに処理されたキナーゼシグナル伝達を推定するためのモデルを構築.
- 部分最小二乗回帰モデルを使用した.
主要な成果:
- 細胞特異性の正確な予測は,細胞タイプが共通の効果因子処理メカニズムを共有するときに達成できます.
- モデルでは,細胞特異のアポトーシス,ケモカインの放出,遺伝子誘導,薬剤感受性の予測が成功しました.
- 証明された細胞特異性は,上流トランスデューサの微分活性化から生じる.
結論:
- 細胞特異性は,共通効果因子が多様な結果を生成することを可能にする,上流の微分活性化から生じる.
- 共通効果因子処理は,細胞生物学における重要な原理である.
- この原則は,細胞特異の薬剤反応を理解し,標的治療の開発に適用できます.
関連する概念動画
Cell-mediated Immune Responses
Overview
Overview of Cell Signaling
Despite the protective membrane that separates a cell from the environment, cells need the ability to detect and respond to environmental changes. Additionally, cells often need to communicate with one another. Unicellular and multicellular organisms use a variety of cell signaling mechanisms to communicate with the environment.
Cells respond to many types of information, often through receptor proteins positioned on the membrane. For example, skin cells respond to and transmit touch...
Cells respond to many types of information, often through receptor proteins positioned on the membrane. For example, skin cells respond to and transmit touch...
Diversity in Cell Signaling Responses
The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity.
Graded and Abrupt Responses
Some signaling systems generate...
Graded and Abrupt Responses
Some signaling systems generate...
Overview of Cell Signaling
Despite the protective membrane that separates a cell from the environment, cells need the ability to detect and respond to environmental changes. Additionally, cells often need to communicate with one another. Unicellular and multicellular organisms use a variety of cell signaling mechanisms to communicate with the environment.
Cells respond to many types of information, often through receptor proteins positioned on the membrane. For example, skin cells respond to and transmit touch...
Cells respond to many types of information, often through receptor proteins positioned on the membrane. For example, skin cells respond to and transmit touch...
Antigen Processing Pathways
MHC molecules are key players in the immune response, enabling T cells to recognize and respond to specific antigens. They are present on the surface of all nucleated cells in the body and are instrumental in presenting antigens to T cells and activating them. T cells recognize the MHC-antigen complex and initiate an immune response. MHC class I and MHC class II are two main types of MHC molecules, each associated with a distinct antigen processing pathway.
MHC Class I: Presenting Endogenous...
MHC Class I: Presenting Endogenous...
B Cell Activation and Differentiation
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...


