Journal
NANO LETTERS
Volume 14, Issue 5, Pages 2293-2298Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl404514e
Keywords
Membrane; cluster chromatography; T cell receptor; nanodot array
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Funding
- National Institute of Allergy and Infectious Diseases (NIAID) [PO1 AI091580]
- National Science Foundation (NSF)
- Deutsche Forschungsgemeinschaft (DFG)
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Here we introduce a form of chromatography that can be imposed on the membrane of a living cell. A cell cell signaling interaction is reconstituted in a hybrid live cell-supported membrane junction. The chromatographic material consists of a hexagonally ordered array of gold nanoparticles (nanodot array), which is fabricated onto the underlying substrate. While individual membrane components move freely throughout the array, the movement of larger assemblies is impeded if they exceed the physical dimensions of the array. This tactile approach to probing membrane structures in living cells reveals organizational aspects of the membrane environment unobservable by other techniques.
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