Movie 6.
Removal of extracellular calcium reduces patch repair. GFP-Dysf (green) transfected HeLa cells were challenged with sublytic (A) SLO (250 HU/mL), (B) ILY (250 HU/mL), or (C) aerolysin (62 HU/mL) in imaging buffer including 2 μg/mL TO-PRO3 (blue) and imaged at 37°C by live cell confocal imaging at 1-3.5 frame/second. 2 mM EGTA was used instead of 2 mM CaCl2 in imaging buffer. Triton-X-100 was added just prior to the end of imaging as a positive control for cell permeabilization. Images were bleach-corrected by histogram matching. Time displays min post toxin challenge. Scale bar = 5 μm.
Patch repair protects cells from the small pore-forming toxin aerolysin
J Cell Sci 2023. 136:None-None; doi: 10.1242/jcs.261018