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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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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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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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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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Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy
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Cell migration: sinking in a gradient.

Konstadinos Moissoglu1, Ritankar Majumdar1, Carole A Parent1

  • 1Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.

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|January 11, 2014
PubMed
Summary
This summary is machine-generated.

CXCR7 acts as a sink, creating gradients of SDF1 in zebrafish lateral line primordium. This mechanism is crucial for understanding how chemoattractant gradients form and persist in complex tissues during cell migration.

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Area of Science:

  • Cell Biology
  • Developmental Biology
  • Biochemistry

Background:

  • Chemoattractant gradients are essential for directed cell migration.
  • Understanding gradient formation in complex tissues remains a challenge.

Purpose of the Study:

  • To investigate the mechanism of chemoattractant gradient formation and persistence.
  • To identify the role of CXCR7 in regulating SDF1 gradients in the zebrafish lateral line primordium.

Main Methods:

  • Utilized zebrafish as a model organism.
  • Investigated the function of CXCR7 in the migrating lateral line primordium.
  • Analyzed the generation of SDF1 gradients.

Main Results:

  • CXCR7 functions as a sink for SDF1.
  • This sink activity is critical for generating and maintaining SDF1 gradients.
  • Demonstrated the role of CXCR7 in facilitating directed cell migration within the primordium.

Conclusions:

  • CXCR7 plays a vital role in establishing chemoattractant gradients necessary for cell migration.
  • The findings provide new insights into the molecular mechanisms governing gradient formation in developmental processes.