We apply our recently developed QPI methodologies, which quantify and track intracellular water content, to investigate the role of aquaporin (AQP) proteins in pulsed electric field (PEF) induced water uptake in cells. QPI imaging is performed on Jurkat and glial cells subjected to PEF simulation. The effects on the transmembrane water flux of the cells are investigated when solutions contain mercury, a known broad spectrum AQP blocker, or commercially available AQP blockers. Our study demonstrates the utility of QPI for rapid intracellular water quantification and shows a path forward for identifying biophysical mechanisms using label-free imaging.
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