Super-Resolution Simplified: Sub-10nm Imaging Over Large Areas and Deep Penetration via SDC-OPR and DNA-PAINT

Abstract

Single molecule localization microscopy (SMLM) is constrained by selective illumination configurations to achieve high signal-to-background ratio (SBR), forcing trade-offs between penetration depth, field-of-view (FOV), and spatial resolution. We demonstrate that a Spinning Disc confocal microscope with Optical Photon Reassignment (SDC-OPR) in combination with DNA-PAINT effectively balances these limitations. This system enables high-resolution imaging through multiple cellular layers, enhancing spatial resolution while remaining practical and accessible for diverse biological applications.