Synthesis and application of FRET nanoparticles in the profiling of a protease**

Lionel Marcon, Corentin Spriet*, Timothy D. Meehan, Bronwyn J. Battersby, Gwendolyn A. Lawrie, Laurent Héliot, Matt Trau

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    A novel colloidal bar coding method utilizing nanoscale fluorescence resonance energy transfer (FRET) reporters decoded by confocal laser scanning microscopy combined with spectral unmixing, was reported. Succinimidyl ester dyes Atto-488, Atto-550, and Atto-590 were covalently linked to a silane coupling agent (3-aminopropyl)-trimethoxysilane, forming an APS-dye conjugate. The three dyes were incorporated into the reporters at five molar ratios. The reporters were loaded on 10μm amine functionalized polystyrene microspheres in eleven different combinations of between three and seven codes to evaluate the utility of the reporters to form a colloidal barcode. Following characterization, the reporters were used to encode a combinatorial peptide library that was applied to profiling the affinity of the West Nile flavivirus protease (WNV-pro). Varying the ratios of energy transfer dyes served as an innovative route to produce unique spectral signatures.

    Original languageEnglish
    Pages (from-to)2053-2056
    Number of pages4
    JournalSmall
    Volume5
    Issue number18
    DOIs
    Publication statusPublished - 18 Sep 2009

    Keywords

    • Barcoding
    • Confocal microscopy
    • Fluorescence
    • Nanoparticles
    • Protease

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