Imaging intracellular fluorescent proteins at nanometer resolution.
Eric Betzig,George H. Patterson,Rachid Sougrat,O. Wolf Lindwasser,Scott G. Olenych,Juan S. Bonifacino,Michael W. Davidson,Jennifer Lippincott-Schwartz,Harald F. Hess +8 more
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TLDR
This work introduced a method for optically imaging intracellular proteins at nanometer spatial resolution and used this method to image specific target proteins in thin sections of lysosomes and mitochondria and in fixed whole cells to image retroviral protein Gag at the plasma membrane.Abstract:
We introduce a method for optically imaging intracellular proteins at nanometer spatial resolution. Numerous sparse subsets of photoactivatable fluorescent protein molecules were activated, localized (to approximately 2 to 25 nanometers), and then bleached. The aggregate position information from all subsets was then assembled into a superresolution image. We used this method--termed photoactivated localization microscopy--to image specific target proteins in thin sections of lysosomes and mitochondria; in fixed whole cells, we imaged vinculin at focal adhesions, actin within a lamellipodium, and the distribution of the retroviral protein Gag at the plasma membrane.read more
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Optical time-stretch imaging: Principles and applications
TL;DR: The principles and limitations of conventional optical imaging are reviewed, the principles and applications of optical time-stretch imaging are discussed, and the future perspective is discussed.
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Video-rate multi-color structured illumination microscopy with simultaneous real-time reconstruction.
Andreas Markwirth,Mario Lachetta,Viola Mönkemöller,Viola Mönkemöller,Rainer Heintzmann,Rainer Heintzmann,Wolfgang Hübner,Thomas R Huser,Marcel Müller,Marcel Müller +9 more
TL;DR: The authors optimise both acquisition and reconstruction software to achieve multicolour SR-SIM at video frame-rates with reconstructed images displaying with only milliseconds delay during the experiment, a first in super-resolved structured illumination microscopy.
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Building Biomedical Materials using Photochemical Bond Cleavage
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Multivalent ligands control stem cell behaviour in vitro and in vivo
Anthony Conway,Tandis Vazin,Dawn P. Spelke,Nikhil A. Rode,Kevin E. Healy,Ravi S. Kane,David V. Schaffer +6 more
TL;DR: The design of potent multivalent conjugates that can organise stem cell receptors into nanoscale clusters and control stem cell behaviour in vitro and in vivo are demonstrated.
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Investigating sub-spine actin dynamics in rat hippocampal neurons with super-resolution optical imaging.
TL;DR: It is found that F-actin in dendritic spines exhibits highly heterogeneous kinematic dynamics at the individual filament level, with simultaneous actin flows in both retrograde and anterograde directions.
References
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TL;DR: PfPMP1)与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作�ly.
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Surpassing the lateral resolution limit by a factor of two using structured illumination microscopy.
TL;DR: Lateral resolution that exceeds the classical diffraction limit by a factor of two is achieved by using spatially structured illumination in a wide‐field fluorescence microscope with strikingly increased clarity compared to both conventional and confocal microscopes.
Journal ArticleDOI
Precise nanometer localization analysis for individual fluorescent probes
TL;DR: A localization algorithm motivated from least-squares fitting theory is constructed and tested both on image stacks of 30-nm fluorescent beads and on computer-generated images (Monte Carlo simulations), and results show good agreement with the derived precision equation.
Journal ArticleDOI
Nonlinear structured-illumination microscopy: Wide-field fluorescence imaging with theoretically unlimited resolution
TL;DR: Experimental results show that a 2D point resolution of <50 nm is possible on sufficiently bright and photostable samples, and a recently proposed method in which the nonlinearity arises from saturation of the excited state is experimentally demonstrated.
Journal ArticleDOI
Myosin V Walks Hand-Over-Hand: Single Fluorophore Imaging with 1.5-nm Localization
Ahmet Yildiz,Joseph N. Forkey,Sean A. McKinney,Taekjip Ha,Taekjip Ha,Yale E. Goldman,Paul R. Selvin,Paul R. Selvin +7 more
TL;DR: The results strongly support a hand-over-hand model of motility, not an inchworm model, which moves processively on actin.
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