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Cell Migration01:09

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Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
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Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
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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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Invadosome is a broad category of cell surface structures with proteolytic activity that  degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
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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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In vitro Cell Migration and Invasion Assays
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細胞移動,新鮮に絞った.

Matthew D Welch1

  • 1Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA.

Cell
|February 14, 2015
PubMed
まとめ
この要約は機械生成です。

細胞の移動モードは,物理的なシグナルによって変化します. 新しい研究は,閉じ込めと収縮性が,胚および腫瘍細胞における安定したブレブ移動モードを駆動することを明らかにしています.

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関連する実験動画

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科学分野:

  • 細胞生物学 細胞生物学
  • バイオフィジックス 生物物理学

背景:

  • 細胞は様々な運動モードを使って移動する.
  • 化学信号や物理的な力などの環境的シグナルが,細胞の動きに影響します.
  • 細胞が移動モードから移動モードに切り替わる仕組みを理解することは,発育と疾患にとって極めて重要です.

研究 の 目的:

  • 物理的な閉じ込めと細胞の収縮性が,細胞の移動モードに与える影響を調査する.
  • "安定したブレブ移住"と呼ばれる新しい移住様式を特定し,特徴づけること.

主な方法:

  • 細胞の行動を観察するために,高度な顕微鏡技術を利用した.
  • 細胞の閉じ込めを制御するために微流体装置を使用した.
  • 遺伝的または薬理学的アプローチを通じて,細胞の収縮性を操作する.

主要な成果:

  • 物理的な閉じ込めと収縮性の増加が,移住戦略の転換を促進することを実証した.
  • 細胞移動の独特で持続的なモードとして"安定したブレブ移動"を特定し,特徴づけました.
  • このモードは,胚の発達と腫瘍の両方の文脈で一般的であることを示した.

結論:

  • 細胞の移動は高度に可塑性があり,物理的微環境要因に反応します.
  • 安定したブレブ移動は,閉じ込めと収縮によって駆動される細胞運動の新たに定義されたモードを表します.
  • この発見は,発達過程における細胞移動と癌転移の理解に意味を持つ.