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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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Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
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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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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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Related Experiment Video

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Study of Cell Migration in Microfabricated Channels
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Cell migration within confined sandwich-like nanoenvironments.

José Ballester-Beltrán1, Myriam Lebourg, Patricia Rico

  • 1Center for Biomaterials & Tissue Engineering, Universitat Politècnica de València, 46022 Valencia, Spain.

Nanomedicine (London, England)
|March 31, 2015
PubMed
Summary

Sandwich-like cultures reveal how nanoenvironments influence cell migration, differing from 2D methods. Dorsal receptor stimulation promotes extracellular matrix remodeling, unlike ventral-only activation.

Keywords:
3D cell migrationcell motilityfibronectinlamellipodia-based migrationlobopodia-based migrationpoly-l-(lactic acid)sandwich culture

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Tissue Engineering

Background:

  • Standard 2D cell culture models do not accurately replicate the complex 3D physiological cellular nanoenvironment.
  • Understanding cell migration requires studying it within conditions that mimic in vivo settings.
  • Engineering the cellular nanoenvironment is crucial for studying cell behavior.

Purpose of the Study:

  • To introduce and utilize sandwich-like cultures to engineer the cellular nanoenvironment.
  • To investigate cell migration under conditions more similar to 3D physiological environments.
  • To tune protein presentation and receptor activation (dorsal and ventral) to study their role in cell migration.

Main Methods:

  • Developed sandwich-like culture systems to control protein presentation and receptor activation.
  • Investigated various nanoenvironments by altering protein coatings and material adsorption.
  • Utilized different protein conformations to elucidate their specific roles in cell migration.

Main Results:

  • Cell migration in sandwich cultures differs significantly from 2D cultures but shows similarities to 3D migration.
  • Cell migration is highly dependent on the specific protein nanoenvironment.
  • Dorsal receptor stimulation promotes extracellular matrix remodeling, surpassing simple ventral receptor activation seen in 2D cultures.

Conclusions:

  • Sandwich-like cultures provide a novel platform for studying cell migration.
  • Local nano-stimulation of dorsal and ventral receptors within sandwich cultures alters cell migration patterns compared to 2D cultures.
  • The engineered nanoenvironment in sandwich cultures offers insights into physiological cell migration processes.