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Related Concept Videos

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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Related Experiment Video

Updated: Dec 28, 2025

Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy
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Nanofiber Alignment Mediates the Pattern of Single Cell Migration.

Yiqun Wang1, Yuan Yao1

  • 1School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai 201210, China.

Langmuir : the ACS Journal of Surfaces and Colloids
|February 11, 2020
PubMed
Summary
This summary is machine-generated.

Tumorigenic KGN cells exhibit greater sensitivity to nanofiber alignment than nontumorigenic cells, influencing their migration patterns and morphology. This study investigates how biomimetic nanofiber topography affects single cell migration dynamics and protein regulation.

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Tissue Engineering

Background:

  • Extracellular matrix (ECM) nanofibrils, like collagen, guide cell migration in natural tissues.
  • Nanofiber reorganization at the cell-ECM interface is observed, but its effect on single cell migration is unclear.

Purpose of the Study:

  • To investigate how biomimetic nanofiber topography influences single cell migration.
  • To compare the responses of tumorigenic (KGN) and nontumorigenic (293T) cells to varying nanofiber alignments.

Main Methods:

  • Fabrication of collagen/polymer based biomimetic nanofiber sheets with diverse topographies.
  • Comparative analysis of KGN and 293T cell behavior, including morphological changes, trajectory adaptation, and velocity.
  • Single cell migration dynamics tracking and siRNA validation of regulatory proteins.

Main Results:

  • KGN cells demonstrated higher sensitivity to nanofiber alignment compared to 293T cells.
  • Aligned nanofibers induced an elongated spindle morphology in both cell types, with KGN cells showing greater perimeter and lower roundness.
  • Nanofiber topography differentially regulated migration patterns; KGN cell migration involved β-catenin, Rac1, and Cdc42, while 293T cell migration utilized vimentin.

Conclusions:

  • Biomimetic nanofiber topography significantly impacts single cell migration dynamics.
  • Tumorigenic KGN cells exhibit distinct responses to nanofiber alignment and molecular pathways compared to nontumorigenic 293T cells.
  • Understanding these differences is crucial for developing targeted therapies and regenerative medicine strategies.