CCF2-AM

CCF2-AM is a cell-permeant, acetoxymethyl (AM) ester form of the CCF2 fluorogenic scaffold used to report β-lactamase activity in biological assays. After intracellular uptake, esterase-mediated deprotection generates a fluorescent species that enables straightforward readout of enzyme-dependent signal generation in microscopy and plate-based formats, making it a widely used reagent for monitoring protease activity in chemical biology and assay development workflows.

1. β-Lactamase Reporter Assays

CCF2-AM is frequently used as a fluorogenic substrate/reporter in β-lactamase activity assays, where enzyme expression or delivery drives conversion to a fluorescent product. Researchers employ it in cell-based screening and mechanistic studies to quantify enzyme-dependent fluorescence changes using standard fluorescence plate readers, enabling convenient workflow integration for activity monitoring and inhibitor evaluation in biochemical and cellular contexts.

2. Live-Cell Fluorescence Imaging

CCF2-AM supports fluorescence imaging workflows aimed at visualizing β-lactamase activity within cellular environments. In microscopy experiments, the reagent's AM ester design supports cellular entry followed by intracellular activation, allowing spatial mapping of enzyme activity in adherent cultures and other imaging-compatible sample formats using common fluorescence microscope systems.

3. Flow Cytometry Enzyme Readout

CCF2-AM is used in flow cytometry to measure β-lactamase activity at the single-cell level, where fluorescence intensity distributions reflect the extent of intracellular conversion. This application is common in chemical biology and cell engineering studies that rely on enzyme reporters to distinguish populations, monitor expression heterogeneity, or follow activity changes across experimental conditions using standard flow cytometric fluorescence detection channels.

4. FRET-Based Reporter Development

CCF2-AM is also applied in assay designs that leverage CCF2-type fluorescence readouts for signal transduction concepts, including fluorescence-resolved reporter formats where enzyme activity produces a detectable fluorescence shift. Teams developing molecular imaging reagents and enzyme-activated fluorescence systems use CCF2-AM as a practical starting fluorogenic component to build activity-dependent readout assays compatible with multiwell screening and fluorescence microscopy readouts.