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Application Notes
Visualization of microglia-neuron junctions with super-resolution and confocal microscopy
July 2020
Microglia are the main immune cells in the brain, and play roles in brain homeostasis and neurological diseases. However, the fundamental mechanisms underlying microglia-neuron communication remain unclear. Dr. Csaba Cserép, Dr. Balázs Pósfai and colleagues, (Laboratory of Neuroimmunology led by Dr. Ádám Dénes, Institute of Experimental Medicine) identified an interaction site between neuronal cell bodies and microglial processes in the mouse brain and studied the function of microglia (C. Cserép and B. Pósfai et al., Science 10.1126/science.aax6752 (2020)). In this Application Note, we introduce how the structure of neuron-microglia junctions was revealed on a nano scale resolution using the confocal and super-resolution microscopes.
N-STORM with DNA-PAINT for Reliable Multicolor & 3D Single Molecule Localization Imaging
November 2016
DNA-PAINT is a technique for single molecule localization microscopy. The sample is immunolabeled with specialized secondary antibodies conjugated to short DNA oligomers known as docking strands. Complimentary oligomers conjugated to fluorophore, known as imaging strands, are introduced in the imaging buffer and will transiently bind to docking strands – allowing single molecules to be localized. Herein multicolor and 3D DNA-PAINT is demonstrated on the Nikon N-STORM 4.0 system.
Quantitative Cluster Analysis Applications for N-STORM
October 2016
Nikon’s N-STORM super-resolution microscope is applied to mapping the distribution of nucleosomes on chromatin fibers, shining a light on the mechanisms of chromatin folding, gene expression, and pluripotency. Multicolor STORM is used to explore how nucleosome distribution differs between differentiated and pluripotent stem cells and correlates with the distribution of other important factors in replication, such as RNA Polymerase II.
Quantitative Analysis Tools and Correlative Imaging Applications for N-STORM
November 2015
Stochastic Optical Reconstruction Microscopy (STORM) has had a significant impact on our understanding of nano-scale biological processes. In this application note, we see how Nikon’s N-STORM system, combined with quantitative analysis tools, enables single molecule level studies of cannabinoid signaling in the brain. Correlative 3D-STORM, confocal microscopy, and patch-clamp electrophysiology is also explored.
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