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Related Concept Videos

Cell Migration01:09

Cell Migration

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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 Migration01:19

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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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Cytoskeletal Coordination in Cell Migration01:32

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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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Chemotaxis and Direction of Cell Migration01:21

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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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Role of Myosin in Cell Migration01:18

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Myosins are multimeric motor proteins involved in various cellular processes such as migration, adhesion, and proliferation. Myosin II is the most common type in animal cells, which binds and cross-links actin filaments.
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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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Study of Cell Migration in Microfabricated Channels
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The principles of directed cell migration.

Shuvasree SenGupta1, Carole A Parent1,2,3,4, James E Bear5,6

  • 1Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI, USA.

Nature Reviews. Molecular Cell Biology
|May 15, 2021
PubMed
Summary
This summary is machine-generated.

Cells migrate using four fundamental principles: signal generation, sensing, transmission, and force application. These pillars explain diverse cell migration behaviors, from chemotaxis to durotaxis.

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Area of Science:

  • Cell Biology
  • Biophysics
  • Mechanobiology

Background:

  • Cells exhibit directed migration in response to environmental cues.
  • Understanding cell sensing and signal transmission to the cytoskeleton is a fundamental biological challenge.
  • While chemotaxis is well-studied, responses to haptotaxis, durotaxis, and topotaxis are emerging areas of research.

Purpose of the Study:

  • To propose four unifying principles underlying all forms of directed cell migration.
  • To compare similarities and highlight diversity in cell migration mechanisms.
  • To provide a framework for understanding how cells sense and respond to diverse environmental signals.

Main Methods:

  • Conceptual framework development based on existing literature.
  • Comparative analysis of different cell migration types (chemotaxis, haptotaxis, durotaxis, topotaxis).
  • Identification of four core principles: signal generation, sensing, transmission, and force application.

Main Results:

  • Directed cell migration is governed by four pillars: signal generation, sensing, transmission, and force application.
  • Signal generation is more nuanced than previously thought.
  • Signal sensing can occur via receptors or less understood mechanisms (e.g., mechanical cues).
  • Signal transmission requires amplification, and conversion to asymmetric force involves the cytoskeleton.

Conclusions:

  • The four-pillar framework unifies diverse cell migration strategies.
  • This model highlights both commonalities and significant mechanistic diversity in cellular responses to environmental cues.
  • Further research is needed to fully elucidate sensing mechanisms, particularly for mechanical signals.