Chemical Methods for the Simultaneous Quantitation of Metabolites and Proteins from Single Cells
作者:Min Xue、Wei Wei、Yapeng Su、Jungwoo Kim、Young Shik Shin、Wilson X. Mai、David A. Nathanson、James R. Heath
DOI:10.1021/jacs.5b00944
日期:2015.4.1
We describe chemical approaches for integrated metabolic and proteomic assays from single cells. Quantitative assays for intracellular metabolites, including glucose uptake and three other species, are designed as surface-competitive binding assays with fluorescence readouts. This enables integration into a microarray format with functional protein immunoassays, all of which are incorporated into the microchambers of a single-cell barcode chip (SCBC). By using the SCBC, we interrogate the response of human-derived glioblastoma cancer cells to epidermal growth factor receptor inhibition. We report, for the first time, on both the intercellular metabolic heterogeneity as well as the baseline and drug-induced changes in the metabolite-phosphoprotein correlation network.