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Related Concept Videos

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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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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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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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,...
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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.
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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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Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration
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Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration

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Cell Migration: Deconstructing the Matrix.

Alberto Elosegui-Artola1, Roger Oria2

  • 1Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA; Wyss Institute for Biologically Inspired Engineering, Cambridge, MA, USA; Institute for Bioengineering of Catalonia, Barcelona, Spain.

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Summary
This summary is machine-generated.

Cellular mechanical forces break apart extracellular matrix (ECM) ligands from surfaces. This creates an ECM ligand gradient that directs cell migration.

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Area of Science:

  • Cell Biology
  • Biophysics
  • Mechanobiology

Background:

  • Cell migration is crucial for development and disease.
  • The role of mechanical forces in guiding cell movement is an active area of research.

Purpose of the Study:

  • To elucidate the mechanism by which cellular mechanical forces influence cell migration.
  • To identify how extracellular matrix (ECM) interactions are modulated by cellular forces.

Main Methods:

  • Utilized advanced microscopy techniques to observe cell-matrix interactions.
  • Applied controlled mechanical forces to cellular substrates.
  • Analyzed the dissociation of extracellular matrix (ECM) ligands.

Main Results:

  • Demonstrated that cellular mechanical forces directly dissociate extracellular matrix (ECM) ligands from the substrate.
  • Observed the formation of a localized ECM ligand gradient beneath migrating cells.
  • Established a correlation between ECM ligand dissociation and directed cell migration.

Conclusions:

  • Cellular mechanical forces play a direct role in remodeling the extracellular matrix (ECM) environment.
  • The dissociation of ECM ligands by cellular forces creates a gradient that guides cell migration.
  • This mechanism provides new insights into the biophysical regulation of cell motility.