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Membrane domains in lymphocytes - from lipid rafts to protein scaffolds

Thomas Harder1, Karin R Engelhardt

  • 1Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK.

Traffic (Copenhagen, Denmark)
|March 20, 2004
PubMed

Insights

Immune cell activation relies on plasma membrane compartmentalization. This review explores diverse membrane domains, from lipid rafts to the T cell immunologic synapse, and their roles in lymphocyte function.

Area of Science:

  • Cell Biology
  • Immunology
  • Membrane Biophysics

Background:

  • Immune cell activation involves lateral compartmentalization of the plasma membrane into distinct domains.
  • These membrane domains are crucial for subsequent immune effector functions.

Purpose of the Study:

  • To review the diversity of plasma membrane domains in immune cells.
  • To discuss the relationship between different membrane domain types.
  • To explain how these domains mediate lymphocyte activity.

Main Methods:

  • Review of existing literature on membrane domains.
  • Analysis of lipid rafts and microm-scale membrane domains.
  • Discussion of protein-lipid interactions and cell biological processes.

Main Results:

  • Plasma membrane exhibits a high diversity of domains, from small lipid rafts to large microm-scale domains.
  • Microm-scale domains form the immunologic synapse in T lymphocytes.
  • Interactions within domains are critical for generating functional domains.

Conclusions:

  • Functional domains are generated through the cooperation of raft lipid- and protein-controlled interactions and cell biological processes.
  • These functional domains are essential for mediating lymphocyte activity.
  • Understanding membrane domain dynamics is key to understanding immune cell function.

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