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High plasma membrane lipid order imaged at the immunological synapse periphery in live T cells.
Mol Membr Biol
August 2010
Chemical Biology Centre, Imperial College, London, UK.
Cholesterol- and glycosphingolipid-enriched membrane lipid microdomains, frequently called lipid rafts, are thought to play an important role in the spatial and temporal organization of immunological synapses. Higher ordering of lipid acyl chains was suggested for these entities and imaging of membrane order in living cells during activation can therefore help to understand the mechanisms responsible for the supramolecular organization of molecules involved in the activation of T cells. Here, we employ the phase-sensitive membrane dye di-4-ANEPPDHQ together with a variety of spectrally-resolved microscopy techniques, including 2-channel ratiometric TIRF microscopy and fluorescence lifetime imaging, to characterize membrane order at the T cell immunological synapse at high spatial and temporal resolution in live cells at physiological temperature.
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Angew Chem Int Ed Engl
April 2002
Kuroda Chiromorphology Project, ERATO, JST, Park Building, 4-7-6 Komaba, Meguro-ku, Tokyo 153-0041, Japan.
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