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Updated: Oct 23, 2025

Visualizing the Actin and Microtubule Cytoskeletons at the B-cell Immune Synapse Using Stimulated Emission Depletion STED Microscopy
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Visualizing the Actin and Microtubule Cytoskeletons at the B-cell Immune Synapse Using Stimulated Emission Depletion STED Microscopy

Published on: April 9, 2018

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The Actin Cytoskeleton at the Immunological Synapse of Dendritic Cells

José Luis Rodríguez-Fernández1, Olga Criado-García1

  • 1Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain.

Frontiers in Cell and Developmental Biology
|August 19, 2021
PubMed

Insights

Dendritic cells (DCs) activate T cells (TCs) via the immunological synapse (IS). Actin cytoskeleton polarization at the DC side of the IS is crucial for maintaining synapse stability and enabling T cell activation.

Area of Science:

  • Immunology
  • Cell Biology
  • Biochemistry

Background:

  • Dendritic cells (DCs) are potent antigen-presenting cells that initiate T cell activation in lymph nodes.
  • T cell activation is mediated by the formation of an immunological synapse (IS) at the DC-T cell contact zone.
  • The IS comprises distinct DC-side (IS(DC)) and T cell-side (IS(TC)) structures, with IS(TC) being more extensively studied.

Purpose of the Study:

  • To investigate the role of the DC-side of the immunological synapse (IS(DC)) in T cell activation.
  • To highlight the importance of the actin cytoskeleton within the IS(DC).

Main Methods:

  • The study discusses experimental data (details not provided in the abstract).
  • Focuses on the role of actin cytoskeleton dynamics at the IS(DC).

Main Results:

  • The IS(DC) and IS(TC) function as signaling hubs involving surface proteins and cytoplasmic components.
  • Actin cytoskeleton polarization at the IS(DC) is essential for IS stability.
  • Stable IS(DC) is necessary for inducing T cell activation.

Conclusions:

  • The actin cytoskeleton at the IS(DC) plays a critical role in regulating DC functions that drive T cell activation.
  • Understanding IS(DC) dynamics, particularly actin organization, is key to comprehending T cell activation control.

Keywords:
T cell activationactincytoskeletondendritic cellimmunological synapse

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