Generation of Bioluminescent Group A Streptococcus for Biophotonic Imaging.

: Bioluminescence is a rapid and cost-saving technology that enables monitoring of bacteria in real time in animal infection models. Here, we report a method for labeling GAS with a set of plasmids we have developed and deposited with Addgene. These plasmids can be used to either integrate firefly luciferase (Ffluc) or red-shifted firefly luciferase (FflucRT) into the GAS genome or to introduce the reporters on plasmids which have been stabilized with a toxin-antitoxin system to prevent loss of plasmid in the absence of antibiotic selection.