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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 Migration01:09

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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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Cancer Cell Migration through Invadopodia01:35

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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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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

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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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Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

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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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Monitoring Dendritic Cell Migration using 19F / 1H Magnetic Resonance Imaging
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LFA-1 in T Cell Migration and Differentiation.

Brandon L Walling1, Minsoo Kim1

  • 1Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, United States.

Frontiers in Immunology
|May 19, 2018
PubMed
Summary

Lymphocyte function-associated antigen-1 (LFA-1) regulates T cell migration and activation, crucial for immune responses. Understanding LFA-1

Keywords:
LFA-1T cell activationT cell differentiationT cell migrationchemokinesintegrins

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Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • Precise lymphocyte trafficking is essential for immune surveillance and adaptive immunity.
  • Dysregulated lymphocyte activation and migration are linked to autoimmune diseases and chronic inflammation.
  • Integrins, cell surface receptors, are key regulators of lymphocyte adhesion, signaling, and migration.

Purpose of the Study:

  • To summarize the roles of lymphocyte function-associated antigen-1 (LFA-1) in T cell function.
  • To review ongoing research on the regulation and function of LFA-1.
  • To highlight LFA-1's significance in immune responses and disease.

Main Methods:

  • Review of existing literature on integrins and lymphocyte function.
  • Focus on lymphocyte function-associated antigen-1 (LFA-1) and its ligand ICAM-1.
  • Discussion of signaling pathways and mechanosensory roles of integrins.

Main Results:

  • LFA-1 (αLβ2) is a critical T cell integrin regulating activation and migration.
  • LFA-1-ICAM-1 interaction mediates firm adhesion to endothelium and antigen-presenting cells.
  • Integrins, including LFA-1, act as mechanosensors, adding complexity to signaling.

Conclusions:

  • LFA-1 plays a pivotal role in T cell-mediated immunity.
  • Further research into LFA-1 functions and regulation is ongoing.
  • Understanding LFA-1 is crucial for addressing immune dysregulation and disease.