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Mechanism of Filopodia Formation01:39

Mechanism of Filopodia Formation

Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
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Phosphoinositides and PIPs

Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
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Immune Surveillance by NK Cells and Phagocytes01:25

Immune Surveillance by NK Cells and Phagocytes

Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
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The JAK-STAT Signaling Pathway01:20

The JAK-STAT Signaling Pathway

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Related Experiment Video

Updated: Jul 5, 2026

Qualitative and Quantitative Analysis of the Immune Synapse in the Human System Using Imaging Flow Cytometry
08:35

Qualitative and Quantitative Analysis of the Immune Synapse in the Human System Using Imaging Flow Cytometry

Published on: January 7, 2019

Spinophilin and the immune synapse.

Brian Seed1, Ramnik Xavier

  • 1Department of Pediatrics, Center for Computational and Integrative Biology, Massachusetts General Hospital, Boston, MA 02114, USA. bseed@ccib.mgh.harvard.edu

The Journal of Cell Biology
|April 16, 2008
PubMed
Summary

Researchers observed significant cellular changes in antigen-presenting cells. Dendritic cells showed remarkable architectural polarization when interacting with T cells, revealing new insights into immune responses.

Area of Science:

  • Immunology
  • Cell Biology
  • Microscopy

Background:

  • Sensitized T cells undergo cellular organization changes when interacting with antigen-presenting cells.
  • Antigen-presenting cells also exhibit significant cellular alterations during T cell interactions.

Purpose of the Study:

  • To investigate the cellular and architectural changes in antigen-presenting cells during T cell interactions.
  • To visualize and characterize the dynamic cellular rearrangements in dendritic cells.

Main Methods:

  • Utilized a spinophilin-green fluorescent protein (GFP) fusion protein for cellular visualization.
  • Observed dendritic cells presenting antigens to T cells.

Main Results:

  • Documented dramatic changes in the cellular architecture of antigen-presenting cells.

More Related Videos

Imaging the Human Immunological Synapse
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Imaging the Human Immunological Synapse

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Visualization of the Immunological Synapse by Dual Color Time-gated Stimulated Emission Depletion (STED) Nanoscopy
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Visualization of the Immunological Synapse by Dual Color Time-gated Stimulated Emission Depletion (STED) Nanoscopy

Published on: March 24, 2014

Related Experiment Videos

Last Updated: Jul 5, 2026

Qualitative and Quantitative Analysis of the Immune Synapse in the Human System Using Imaging Flow Cytometry
08:35

Qualitative and Quantitative Analysis of the Immune Synapse in the Human System Using Imaging Flow Cytometry

Published on: January 7, 2019

Imaging the Human Immunological Synapse
09:37

Imaging the Human Immunological Synapse

Published on: December 26, 2019

Visualization of the Immunological Synapse by Dual Color Time-gated Stimulated Emission Depletion (STED) Nanoscopy
10:00

Visualization of the Immunological Synapse by Dual Color Time-gated Stimulated Emission Depletion (STED) Nanoscopy

Published on: March 24, 2014

  • Captured remarkable polarization of dendritic cell structure during T cell encounters.
  • Conclusions:

    • Antigen-presenting cells undergo substantial architectural reorganization.
    • The study highlights significant cellular dynamics in dendritic cells during immune surveillance and response.