We describe a method for tracking the endomembrane rupture elicited by the intracellular bacteria Shigella flexneriandMycobacterium tuberculosisupon host cell invasion. Our assay makes use of CCF4, a host cytoplasmic FRET probe in live or fixed cells. This reporter is degraded by an enzyme activity present on the bacterial surface.
Keller, C., Mellouk, N., Danckaert, A., Simeone, R., Brosch, R., Enninga, J., Bobard, A. Single Cell Measurements of Vacuolar Rupture Caused by Intracellular Pathogens. J. Vis. Exp. (76), e50116, doi:10.3791/50116 (2013).