DNA-directed assembly of antibody-fluorophore conjugates for quantitative multiparametric flow cytometry.

ABSTRACT: Multiparametric flow cytometry offers a powerful approach to single-cell analysis with broad applications in research and diagnostics. Despite advances in instrumentation, progress in methodology has lagged. Currently there is no simple and efficient method for antibody labeling or quantifying the number of antibodies bound per cell. Herein, we describe a DNA-directed assembly approach to fluorescent labeling that overcomes these barriers. Oligonucleotide-tagged antibodies and microparticles can be annealed to complementary oligonucleotides bearing fluorophores to create assay-specific labeling probes and controls, respectively. The ratio of the fluorescence intensity of labeled cells to the control particles allows direct conversion of qualitative data to quantitative units of antibody bi

SUBMITTER: Flor AC 

PROVIDER: S-EPMC3925401 | biostudies-literature | 2014 Jan

REPOSITORIES: biostudies-literature