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Related Concept Videos

Cell Migration01:09

Cell Migration

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.
Cell Migration01:19

Cell Migration

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.
Chemotaxis and Direction of Cell Migration01:21

Chemotaxis and Direction of Cell Migration

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 towards...
Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

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 proteins that...
Role of Myosin in Cell Migration01:18

Role of Myosin in Cell Migration

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. It is...
Cancer Cell Migration through Invadopodia01:35

Cancer Cell Migration through Invadopodia

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, invadopodia can...

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Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy
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Dynamic cell adhesion and migration on nanoscale grooved substrates.

E Lamers1, J te Riet, M Domanski

  • 1Department of Biomaterials, Radboud University Nijmegen Medical Centre 309 PB, PO Box 9101, 6500HB Nijmegen, The Netherlands.

European Cells & Materials
|March 15, 2012
PubMed
Summary

Nanotopography guides cell behavior. A 600 nm groove pitch optimally enhances osteoblast adhesion and migration, suggesting potential for improved wound healing and tissue regeneration around implantable materials.

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Tissue Engineering

Background:

  • Organized nanotopography mimics the extracellular matrix, influencing cell behavior.
  • Understanding specific cell-pattern interactions is crucial for applications like wound healing.
  • Initial cell adhesion and migration are key for cell coverage and regenerative responses.

Purpose of the Study:

  • To investigate the impact of nanogroove pitch on MC3T3-E1 osteoblast initial adhesion and directional migration.
  • To determine optimal nanogroove patterns for enhanced cell response on implantable materials.

Main Methods:

  • Utilized multi-patterned substrates with nanogrooves (150-1000 nm pitch) and smooth areas.
  • Employed atomic force spectroscopy-assisted single-cell force spectroscopy for initial adhesion measurements (10s).
  • Assessed directional cell migration parallel to nanogrooves.

Main Results:

  • Initial osteoblast adhesion was significantly enhanced by a 600 nm pitch and reduced by a 150 nm pitch.
  • RGD peptide addition reduced adhesion, highlighting the role of integrins and adhesive proteins.
  • Directional cell migration was highest on the 600 nm pitch and significantly restrained on the 150 nm pitch.

Conclusions:

  • A 600 nm nanogroove pitch promotes optimal initial adhesion and directional migration of osteoblasts.
  • This specific nanotopography may enhance wound closure and promote tissue regeneration around implantable devices.
  • Nanotopography design is critical for tailoring cell responses in regenerative medicine.