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- W2059303695 abstract "CD4 molecule, the surface marker of T helper cell, has been confirmed to be the main cellular receptor for the human immunodeficiency viruses HIV-1, HIV-2 and SIV. Recent research demonstrated the importance of the spatial arrangement of CD4 on the cell membrane to its binding efficiency to virus. In this article, the combined near-field scanning optical microscopy (NSOM) and quantum dots (QDs) fluorescent labeling technology were performed to investigate the nanoscale organization of CD4 molecules with a spatial resolution about 100 nm. Simultaneous topographic image of the T helper cell and fluorescent image of QDs have been directly gained by NSOM/QDs-based system. Intensity- and size-distribution histograms of the QDs fluorescent spots verify that approximately 80% of the CD4 molecules are organized in nanosized domains randomly distributed on the cell surface. Intensity-size correlation analysis revealed heterogeneity in the molecular packing density of the domains. Our results also illustrated the combination of NSOM imaging and QDs labeling is an ultrasensitive, high-resolution technique to probe nanoscale organization of molecules on the cell surface." @default.
- W2059303695 created "2016-06-24" @default.
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- W2059303695 date "2008-09-30" @default.
- W2059303695 modified "2023-10-17" @default.
- W2059303695 title "Nanoscale organization of CD4 molecules of human T helper cell mapped by NSOM and quantum dots" @default.
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- W2059303695 doi "https://doi.org/10.1002/sca.20128" @default.
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