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関連する概念動画

Polarity of the Cytoskeleton01:18

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The intrinsic polarity of cells can be primarily attributed to two factors- i) the asymmetric accumulation of mobile components such are regulatory molecules and subcellular components across the cell and ii) the orientation of polar cytoskeletal filaments that make up the cytoskeletal networks, specifically microfilaments, and microtubules arranged along the axis of polarity. Interactions between the cytoskeletal filaments are crucial for the establishment and maintenance of the polar nature...
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Cell Polarization by Rho Proteins01:21

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Cell polarity is the asymmetric distribution of cellular and membrane components, making one side of the cell different from the other. This polarity is essential to many processes such as embryogenesis, axon migration, glucose transport across epithelial cells, and directional cell migration. A migrating cell responds to intracellular or extracellular signals via molecular cascades that reorganize the actin cytoskeleton to establish this polarity. In these cells, the Rho family proteins Cdc42,...
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Cells can detect chemical cues in their environment and reorganize the cytoskeleton to migrate toward them or away from them. This directional migration, called chemotaxis, is essential during embryogenesis and development, immune response, tissue repair and regeneration, and reproduction. These chemical cues can either attract or repel the cell's movement. For example, axon development is determined by a combination of chemoattractants and chemorepellents that direct the growing axon...
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A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
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Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
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The cellular phase of acute inflammation is a tightly orchestrated sequence of events that recruits leukocytes, primarily neutrophils, to sites of tissue injury or infection. Following the initial vascular changes, this phase ensures effective immune cell migration, activation, and function at the affected site to eliminate pathogens and initiate tissue repair.Leukocyte Recruitment CascadeLeukocyte recruitment happens in four steps: margination, adhesion, transmigration, and chemotaxis. Reduced...
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Rapid and Robust Analysis of Cellular and Molecular Polarization Induced by Chemokine Signaling
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ネットワークのクロストラックは,中性粒子の偏極化中に動的に変化します.

Chin-Jen Ku1, Yanqin Wang, Orion D Weiner

  • 1Department of Pharmacology, Green Center for Systems Biology, Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.

Cell
|May 29, 2012
PubMed
まとめ
この要約は機械生成です。

中性粒子の二極化を調査するこの研究は,複雑な信号ネットワークとそれらのクロストークがどのように動的に進化するかを明らかにします. 異なったクロスストークパターンは,この重要な細胞プロセス中に細胞の強度と極性反応に独特の影響を及ぼします.

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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
  • 免疫学 免疫学とは

背景:

  • 複雑な信号ネットワークが細胞の反応を支配しているが,その正確なメカニズムは不明である.
  • 中性粒子の二極化は,複雑なシグナル伝達経路を含む,キモアトラクタントに対する重要な多段階の細胞応答です.

研究 の 目的:

  • 中性粒子の二極化中のシグナリングモジュール間の因果的な影響 (クロストーク) を調査する.
  • 進化するクロストークパターンが,強度や極性などの細胞の反応をどのように形作るのかを理解する.

主な方法:

  • 信号モジュールを妨害するために,ネットワークの混乱アプローチを採用しました.
  • 定量化された細胞骨格マーカータンパク質の強度と中性粒子の時間経過における極性.

主要な成果:

  • クロスストックは中性粒子の極化時に急速に進化することを明らかにした.
  • 異なったクロストークパターンが強度と極性反応に差異的に影響することを示した.
  • 強度に影響を与える線形カスケードと,極性に影響を与えるフィードフォワードネットワークを特定しました.

結論:

  • この研究は,複雑でダイナミックな信号システムを解剖するための戦略を提供します.
  • 信号伝達ネットワークにおける因果的な影響の進化は,中性粒子の偏極化を形作るための鍵です.