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Updated: Jun 20, 2026

Nanopodia - Thin, Fragile Membrane Projections with Roles in Cell Movement and Intercellular Interactions
Published on: April 3, 2014
Tetraspanin-enriched microdomains: a functional unit in cell plasma membranes
María Yáñez-Mó1, Olga Barreiro, Mónica Gordon-Alonso
1Servicio de Inmunología, Hospital Universitario de la Princesa, UAM C/ Diego de León 62, 28006, Madrid, Spain.
Abstract:
Membrane lipids and proteins are non-randomly distributed and are unable to diffuse freely in the plane of the membrane. This is because of multiple constraints imposed both by the cortical cytoskeleton and by the preference of lipids and proteins to cluster into diverse and specialized membrane domains, including tetraspanin-enriched microdomains, glycosylphosphatidyl inositol-linked proteins nanodomains and caveolae, among others. Recent biophysical characterization of tetraspanin-enriched microdomains suggests that they might be specially suited for the regulation of avidity of adhesion receptors and the compartmentalization of enzymatic activities. Moreover, modulation by tetraspanins of the function of adhesion receptors involved in inflammation, lymphocyte activation, cancer and pathogen infection suggests potential as therapeutic targets. This review explores this emerging picture of tetraspanin microdomains and discusses the implications for cell adhesion, proteolysis and pathogenesis.
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