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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

Cell Migration

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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

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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Actin Polymerization and Cell Motility01:13

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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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Study of Cell Migration in Microfabricated Channels
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Single cell migration dynamics mediated by geometric confinement.

Hua Zhang1, Ruixia Hou1, Peng Xiao1

  • 1Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Science, Ningbo 315201, China.

Colloids and Surfaces. B, Biointerfaces
|May 4, 2016
PubMed
Summary
This summary is machine-generated.

Geometric cues control cell migration on graphene oxide (GO) microstripes. This study enhances understanding of cell movement for tissue engineering and regenerative medicine applications.

Keywords:
Cell migrationCytoskeleton contractilityGraphene oxide micropatternsOsteoblasts

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Tissue Engineering

Background:

  • Cell migration is crucial for tissue engineering and regenerative medicine.
  • Existing research often emphasizes biophysical cues over geometric influences on cell migration.
  • The role of geometric cues in mediating cell migration dynamics remains underexplored.

Purpose of the Study:

  • To investigate how geometric cues, specifically graphene oxide (GO) microstripes, influence cell migration dynamics.
  • To explore the potential of patterned substrates for controlling cell adhesion, polarization, and movement.
  • To provide insights for developing advanced graphene-based materials for regenerative medicine.

Main Methods:

  • Fabrication of graphene oxide (GO) microstripes on polyethylene glycol (PEG) substrates using micromolding in capillary (MIMIC).
  • Utilizing alternating cell-adhesive (GO) and cell-resistant (PEG) patterns to guide single-cell adhesion and migration.
  • Systematically varying microstripe widths to modulate cell deformation and polarization.

Main Results:

  • Engineered micropatterns effectively confined cells to GO microstripes due to differential adhesion.
  • Cells exhibited highly polarized, elongated, and oriented geometries in response to pattern confinement.
  • Increased cytoskeleton contractility, intracellular traction, and actin filament elongation were observed under confinement, leading to enhanced cell migration.

Conclusions:

  • Geometric confinement on GO microstripes significantly enhances and directs cell migration.
  • This approach offers a novel strategy for controlling cell dynamics in tissue engineering.
  • Graphene-based micropatterning holds great promise for advancing regenerative medicine.