title: STED Super-resolution Microscopy inDrosophilaTissue and in Mammalian Cells.
abstract: Far-field super-resolution microscopy is a rapidly emerging method that is opening up opportunities for biological imaging beyond the optical diffraction limit. We have implemented a Stimulated Emission Depletion (STED) microscope to image single dye, cell, and tissue samples with 50-80 nm resolution. First, we compare the STED performance imaging single molecules of several common dyes and report a novel STED dye. Then we apply STED to image planar cell polarity protein complexes in intact fixedDrosophilatissue for the first time. Finally, we present a preliminary study of the centrosomal protein Cep164 in mammalian cells. Our images suggest that Cep164 is arranged in a nine-fold symmetric pattern around the centriole, consistent with findings suggested by cryoelectron tomography. Our work demonstrates that STED microscopy can be used for superresolution imaging in intact tissue and provides ultrastructural information in biological samples as an alternative to immuno-electron microscopy.
authors: Department of Chemistry, Stanford University, Stanford, CA USA 94305.
authors: Lana
authors: L
authors: Lau
authors: Yin Loon
authors: YL
authors: Lee
authors: Maja
authors: M
authors: Matis
authors: Jeff
authors: J
authors: Axelrod
authors: Tim
authors: T
authors: Stearns
authors: W E
authors: WE
authors: Moerner
keywords: Drosophila; STED; centrosome; single-molecule; super-resolution microscopy