Abstract
Fluorescence live-cell imaging by single molecule localization microscopy (SMLM) or fluorescence lifetime imaging microscopy (FLIM) in principle allows for the spatio-temporal observation of molecular patterns in individual, living cells. However, the dynamics of molecules within cells hamper their precise observation. We present here a detailed protocol for consecutive cycles of reversible cryo-arrest of living cells on a microscope that allows for a precise determination of the evolution of molecular patterns within individual living cells. The usefulness of this approach has been demonstrated by observing ligand-induced clustering of receptor tyrosine kinases as well as their activity patterns by SMLM and FLIM (Masip et al., 2016).
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