scholarly journals Single-molecule Photoswitching and Localization

2011 ◽  
Vol 64 (5) ◽  
pp. 503 ◽  
Author(s):  
Sebastian van de Linde ◽  
Steve Wolter ◽  
Markus Sauer
Keyword(s):  
Single Molecule ◽  
Optical Resolution ◽  
Super Resolution ◽  
Image Plane ◽  
Localization Microscopy ◽  
Stochastic Optical Reconstruction Microscopy ◽  
Resolution Imaging ◽  
Spatio Temporal ◽  
Optical Reconstruction ◽  
20 Nm

Within only a few years super-resolution fluorescence imaging based on single-molecule localization and image reconstruction has attracted considerable interest because it offers a comparatively simple way to achieve a substantially improved optical resolution down to ∼20 nm in the image plane. Since super-resolution imaging methods such as photoactivated localization microscopy, fluorescence photoactivation localization microscopy, stochastic optical reconstruction microscopy, and direct stochastic optical reconstruction microscopy rely critically on exact fitting of the centre of mass and the shape of the point-spread-function of isolated emitters unaffected by neighbouring fluorophores, controlled photoswitching or photoactivation of fluorophores is the key parameter for resolution improvement. This review will explain the principles and requirements of single-molecule based localization microscopy, and compare different super-resolution imaging concepts and highlight their strengths and limitations with respect to applications in fixed and living cells with high spatio-temporal resolution.

scholarly journals About samples, giving examples: Optimized Single Molecule Localization Microscopy

2019 ◽  
Author(s):  
Angélique Jimenez ◽  
Karoline Friedl ◽  
Christophe Leterrier
Keyword(s):  
Single Molecule ◽  
Super Resolution ◽  
Full Potential ◽  
Coated Pits ◽  
Localization Microscopy ◽  
Stochastic Optical Reconstruction Microscopy ◽  
Nanoscale Topography ◽  
Biological Discovery ◽  
Optical Reconstruction ◽  
Single Molecule Localization Microscopy

AbstractSuper-resolution microscopy has profoundly transformed how we study the architecture of cells, revealing unknown structures and refining our view of cellular assemblies. Among the various techniques, the resolution of Single Molecule Localization Microscopy (SMLM) can reach the size of macromolecular complexes and offer key insights on their nanoscale arrangement in situ. SMLM is thus a demanding technique and taking advantage of its full potential requires specifically optimized procedures. Here we describe how we perform the successive steps of an SMLM workflow, focusing on single-color Stochastic Optical Reconstruction Microscopy (STORM) as well as multicolor DNA Points Accumulation for imaging in Nanoscale Topography (DNA-PAINT) of fixed samples. We provide detailed procedures for careful sample fixation and immunostaining of typical cellular structures: cytoskeleton, clathrin-coated pits, and organelles. We then offer guidelines for optimal imaging and processing of SMLM data in order to optimize reconstruction quality and avoid the generation of artifacts. We hope that the tips and tricks we discovered over the years and detail here will be useful for researchers looking to make the best possible SMLM images, a pre-requisite for meaningful biological discovery.

scholarly journals Volumetric super-resolution imaging by serial ultrasectioning and STochastic Optical Reconstruction Microscopy (STORM) in neural tissue

2021 ◽  
Author(s):  
Tarlan Vatan ◽  
Jacqueline A. Minehart ◽  
Chenghang Zhang ◽  
Vatsal Agarwal ◽  
Jerry Yang ◽  
...  
Keyword(s):  
Single Molecule ◽  
Super Resolution ◽  
Neural Tissue ◽  
Imaging Data ◽  
Whole Cells ◽  
Stochastic Optical Reconstruction Microscopy ◽  
Tissue Scattering ◽  
Resolution Imaging ◽  
Optical Reconstruction ◽  
Chemical Synapses

Abstract Here we present a protocol for collecting large-volume, four-color, single-molecule localization imaging data from neural tissue. We have applied this technique to map the location and identities of chemical synapses across whole cells in mouse retinae. Our sample preparation approach improves 3D STORM image quality by reducing tissue scattering, photobleaching, and optical distortions associated with deep imaging. This approach can be extended for use on other tissue types enabling life scientists to perform volumetric super-resolution imaging in diverse biological models. For a detailed application of this protocol, please refer to Sigal et al., 2015.

scholarly journals Toward Sub-Diffraction Imaging of Single-DNA Molecule Sensors Based on Stochastic Switching Localization Microscopy

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6667
Author(s):  
Seungah Lee ◽  
Indra Batjikh ◽  
Seong Ho Kang
Keyword(s):  
Single Molecule ◽  
Specific Binding ◽  
Super Resolution ◽  
Localization Microscopy ◽  
Single Molecule Level ◽  
Stochastic Optical Reconstruction Microscopy ◽  
Wide Range ◽  
Nanoscale Topography ◽  
Diffraction Imaging ◽  
Optical Reconstruction

The natural characteristics of deoxyribonucleic acid (DNA) enable its advanced applications in nanotechnology as a special tool that can be detected by high-resolution imaging with precise localization. Super-resolution (SR) microscopy enables the examination of nanoscale molecules beyond the diffraction limit. With the development of SR microscopy methods, DNA nanostructures can now be optically assessed. Using the specific binding of fluorophores with their target molecules, advanced single-molecule localization microscopy (SMLM) has been expanded into different fields, allowing wide-range detection at the single-molecule level. This review discusses the recent progress in the SR imaging of DNA nano-objects using SMLM techniques, such as direct stochastic optical reconstruction microscopy, binding-activated localization microscopy, and point accumulation for imaging nanoscale topography. Furthermore, we discuss their advantages and limitations, present applications, and future perspectives.

scholarly journals Focus on Super-Resolution Imaging with Direct Stochastic Optical Reconstruction Microscopy (dSTORM)

2014 ◽  
Vol 67 (2) ◽  
pp. 179 ◽  
Author(s):  
Donna R. Whelan ◽  
Thorge Holm ◽  
Markus Sauer ◽  
Toby D. M. Bell
Keyword(s):  
Cell Biology ◽  
Super Resolution ◽  
Diffraction Limit ◽  
Stochastic Optical Reconstruction Microscopy ◽  
Resolution Imaging ◽  
Optical Reconstruction ◽  
Set Up ◽  
Microscopy Techniques ◽  
Super Resolution Microscopy ◽  
Microscopic Techniques

The last decade has seen the development of several microscopic techniques capable of achieving spatial resolutions that are well below the diffraction limit of light. These techniques, collectively referred to as ‘super-resolution’ microscopy, are now finding wide use, particularly in cell biology, routinely generating fluorescence images with resolutions in the order of tens of nanometres. In this highlight, we focus on direct Stochastic Optical Reconstruction Microscopy or dSTORM, one of the localisation super-resolution fluorescence microscopy techniques that are founded on the detection of fluorescence emissions from single molecules. We detail how, with minimal assemblage, a highly functional and versatile dSTORM set-up can be built from ‘off-the-shelf’ components at quite a modest budget, especially when compared with the current cost of commercial systems. We also present some typical super-resolution images of microtubules and actin filaments within cells and discuss sample preparation and labelling methods.

scholarly journals Molecular resolution imaging by post-labeling expansion single-molecule localization microscopy (Ex-SMLM)

2020 ◽  
Author(s):  
Fabian U. Zwettler ◽  
Sebastian Reinhard ◽  
Davide Gambarotto ◽  
Toby D. M. Bell ◽  
Virginie Hamel ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Single Molecule ◽  
Super Resolution ◽  
Reference Structure ◽  
Positional Error ◽  
Localization Microscopy ◽  
Resolution Imaging ◽  
Endogenous Proteins ◽  
Super Resolution Microscopy ◽  
Single Molecule Localization Microscopy

AbstractExpansion microscopy (ExM) enables super-resolution fluorescence imaging of physically expanded biological samples with conventional microscopes. By combining expansion microscopy (ExM) with single-molecule localization microscopy (SMLM) it is potentially possible to approach the resolution of electron microscopy. However, current attempts to combine both methods remained challenging because of protein and fluorophore loss during digestion or denaturation, gelation, and the incompatibility of expanded polyelectrolyte hydrogels with photoswitching buffers. Here we show that re-embedding of expanded hydrogels enables dSTORM imaging of expanded samples and demonstrate that post-labeling ExM resolves the current limitations of super-resolution microscopy. Using microtubules as a reference structure and centrioles, we demonstrate that post-labeling Ex-SMLM preserves ultrastructural details, improves the labeling efficiency and reduces the positional error arising from linking fluorophores into the gel thus paving the way for super-resolution imaging of immunolabeled endogenous proteins with true molecular resolution.

Mechanistic insights into EGFR membrane clustering revealed by super-resolution imaging

Nanoscale ◽  
2015 ◽  
Vol 7 (6) ◽  
pp. 2511-2519 ◽  
Author(s):  
Jing Gao ◽  
Ye Wang ◽  
Mingjun Cai ◽  
Yangang Pan ◽  
Haijiao Xu ◽  
...  
Keyword(s):  
Distribution Pattern ◽  
Lipid Rafts ◽  
Essential Role ◽  
Super Resolution ◽  
Stochastic Optical Reconstruction Microscopy ◽  
Polarized Cells ◽  
Resolution Imaging ◽  
Optical Reconstruction ◽  
Cluster Maintenance

We investigate the distribution of membrane EGFR by direct stochastic optical reconstruction microscopy (dSTORM). Our results illustrate the clustering distribution pattern of EGFR in polarized cells and uncover the essential role of lipid rafts in EGFR cluster maintenance.

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