Super-resolution imaging techniques have transformed biological and biomedical research by allowing researchers to observe structures well below the classical diffraction limit of light. DNA Points Accumulation for Imaging in Nanoscale Topography (DNA-PAINT) is an easy-to-implement approach to localization-based super-resolution microscopy by using small DNA probes. In DNA-PAINT, transient binding of short dye-labeled oligonucleotides (‘imager’) to their complementary target (‘docking’) strands creates the necessary ‘blinking’ to enable stochastic super-resolution microscopy. Using the programmability and specificity of DNA molecules as imaging and labeling probes allows researchers to decouple blinking from dye photophysics, alleviating limitations of current super-resolution techniques, and making it compatible with virtually any single-molecule compatible dye. Further, because different docking strands can be added to different targets within the same sample there is potentially unlimited multiplexing potential.
In this webinar we will show you how to perform multiplexed three-dimensional DNA-PAINT measurements on the Vutara VXL with integrated fluidics unit. We will cover the theoretical background, sample preparation, image acquisition and target multiplexing.