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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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Role of Myosin in Cell Migration01:18

Role of Myosin in Cell Migration

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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.
Myosin II  is a hexamer comprising two heavy chains with globular heads and coiled-coil tails, two regulatory light chains, and two essential light chains. The ATPase sites on the myosin heads hydrolyze ATP, and the released phosphate generates the force for contraction....
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Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

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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

Chemotaxis and Direction of Cell Migration

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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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Mechanism of Lamellipodia Formation01:31

Mechanism of Lamellipodia Formation

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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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Actin Polymerization and Cell Motility01:13

Actin Polymerization and Cell Motility

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Actin is a family of globular proteins that are highly abundant in eukaryotic cells. It makes up approximately 1-5% of total cell protein concentration. Actin monomers polymerize to form a complex network of polarized filaments, the actin cytoskeleton, that plays a crucial role in many cellular processes, including cell motility, division, endocytosis, and metastasis of cancer cells.
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Related Experiment Video

Updated: Oct 21, 2025

Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration
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Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration

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Mechanistic Insight in Surface Nanotopography Driven Cellular Migration.

Panthihage Ruvini L Dabare1, Akash Bachhuka1, Rahul M Visalakshan1

  • 1UniSA STEM, University of South Australia, Mawson Lakes, South Australia 5095, Australia.

ACS Biomaterials Science & Engineering
|September 3, 2021
PubMed
Summary

Surface nanotopography accelerates cell migration, crucial for wound healing. Greater nanoscale topography enhances gap closure by modulating focal adhesion proteins, offering insights for tissue regeneration strategies.

Keywords:
biomaterialscell migrationnanotopographyplasma polymerizationsurface chemistrywound healing

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Related Experiment Videos

Last Updated: Oct 21, 2025

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Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy
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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Surface Engineering

Background:

  • Cellular migration is fundamental to physiological processes like wound healing.
  • Understanding how surface properties influence cell behavior is key for regenerative medicine.

Purpose of the Study:

  • To investigate the impact of surface nanotopography on cell migration signaling pathways.
  • To design and implement model surfaces with controlled nanotopography and chemistry.

Main Methods:

  • Fabrication of nanotopographical surfaces using plasma polymerization and nanoparticle attachment.
  • Utilized scratch wound assays, immunostaining, and gene expression analysis.
  • Quantified focal adhesion (FA) protein expression and distribution.

Main Results:

  • Increased nanoscale topography led to faster gap closure, primarily via enhanced cell migration.
  • Cell proliferation was independent of the observed nanotopographical effects.
  • Surface nanotopography modulated FA protein expression, decreasing focal adhesion sites while increasing protein expression.

Conclusions:

  • Nanotopography directly influences cell migration by regulating the recruitment of cell-surface interaction proteins.
  • Biomaterials with tailored nanotopography and chemistry can control cell migration.
  • Potential applications in regulating wound healing and tissue regeneration.