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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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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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Updated: Jul 25, 2025

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Constriction imposed by basement membrane regulates developmental cell migration.

Ester Molina López1, Anna Kabanova1,2, Alexander Winkel3

  • 1Centro Andaluz de Biología del Desarrollo CSIC-University Pablo de Olavide, Sevilla, Spain.

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This summary is machine-generated.

The study reveals that the stiffness of the basement membrane (BM) surrounding developing tissues regulates collective cell migration. Altering BM stiffness impacts cell movement dynamics and tension, highlighting BMs

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Area of Science:

  • Developmental Biology
  • Cell Biology
  • Biophysics

Background:

  • Basement membranes (BMs) are specialized extracellular matrices (ECM) crucial for tissue development.
  • Mechanical properties of BMs influence tissue morphogenesis and cell behavior.

Purpose of the Study:

  • To investigate the role of encasing basement membranes in collective cell migration.
  • To understand how basement membrane stiffness affects cell migration dynamics and tissue shaping.

Main Methods:

  • Utilized the Drosophila egg chamber border cell migration model.
  • Manipulated basement membrane stiffness by altering laminin and type IV collagen levels.
  • Quantified border cell migration speed, mode, and dynamics.
  • Measured cortical tension between nurse cells and follicle cells.

Main Results:

  • Altering follicle basement membrane stiffness inversely affected border cell migration speed.
  • Changes in basement membrane stiffness altered border cell migration mode and dynamics.
  • Follicle basement membrane stiffness regulated cortical tension between nurse and follicle cells.

Conclusions:

  • Encasing basement membranes play a critical role in regulating collective cell migration during morphogenesis.
  • Basement membrane stiffness influences cell migration through mechanical constraints on cell-cell interactions.
  • This study uncovers a novel mechanism by which extracellular matrix mechanics guide developmental processes.